2026-05-21T07:45:17Z https://jurnalnatural.unipa.ac.id/index.php/jn/oai

oai:ojs2.jurnalnatural.unipa.ac.id:article/3 2020-02-05T00:57:21Z jn:ART driver

KAJIAN METODE FUZZY K-RATAAN DAN FUZZY K-MEDOIDS (STUDI KASUS: PENGELOMPOKAN DESA DI KABUPATEN SORONG TAHUN 2016 BERDASARKAN STATUS KETERTINGGALAN) Indah Ratih Anggriyani Matualage, Dariani Matulessy, Esther Ria The developments research in the cluster analysis using the fuzzy method. The fuzzy method allocates to each group with membership value located at interval [0, 1], showing the magnitude of the possibility of an object being a member into a particular group. Outlier in data very important known before grouping, because affect the final result. Grouping by using the mean value as the center of the group will be more sensitive than using the median value, so this research applies fuzzy c-means and fuzzy c-medoid method to the grouping of villages in Sorong Regency Year 2016 based on the underdevelopment status and examine the goodness of both methods. There are 23.2% of villages that do not change when done grouping with both methods. Overall average distance of group center object and varians in the resulting group the two methods are the same, the varins between groups of fuzzy c-means is greater than the fuzzy c-medoid method. FMIPA Universitas Papua 2020-01-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/3 10.30862/jn.v14i1.3 Jurnal Natural; Vol. 14 No. 1 (2018); 1 - 13 2746-427X 1412-1328 10.30862/jn.v14i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/3/1 Copyright (c) 2020 Jurnal Natural

oai:ojs2.jurnalnatural.unipa.ac.id:article/8 2020-01-31T06:28:36Z jn:ART

oai:ojs2.jurnalnatural.unipa.ac.id:article/9 2020-01-31T06:27:51Z jn:ART

oai:ojs2.jurnalnatural.unipa.ac.id:article/10 2020-01-31T06:27:57Z jn:ART

oai:ojs2.jurnalnatural.unipa.ac.id:article/11 2020-02-05T00:57:21Z jn:ART driver

PENENTUAN KEDALAMAN SUMUR BOR BERDASARKAN DATA GEOLISTRIK RESISTIVITAS DI BEBERAPA KAMPUNG DI KABUPATEN FAK-FAK Khristian Enggar Pamuji Resistivity groundwater aquife borehole Geoelectrical Resistivity method is a geophysical method that can be used to determine subsurface geology based on rock resistivity image. Resistivity survey has been done in some villages, in Fak Fak Regency, West Papua Province. The measurement method that used is sounding, whereas electrode configuration used is Dipole-dipole configuration with a stretch of 100 -150 m. The data obtained are then processed by Progress Res2Dinv. The results of this survey obtained show that in the resistivity sounding measurement point found any good groundwater aquifers, as the  water source of drilled well. Water layer with the thickness between 1-3 m at the surface (alluvial) is a rain water infiltration that is not recommended to make boreholes at this point. FMIPA Universitas Papua 2018-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/11 10.30862/jn.v14i1.11 Jurnal Natural; Vol. 14 No. 1 (2018); 37 - 44 2746-427X 1412-1328 10.30862/jn.v14i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/11/5

oai:ojs2.jurnalnatural.unipa.ac.id:article/12 2020-02-05T00:57:21Z jn:ART driver

IDENTIFIKASI JENIS VEGETASI DOMINAN DI AREAL BEKAS KEBUN DAN KEBUN DI KAMPUNG AYAMBORI MANOKWARI (Identifying Dominant Vegetation In The Plantation Area And Former Farmland As The Indicator Of Soil Fertality At Ayambori Village – Manokwari) Heru Joko Budirianto Dominant Vegetation Former Farmland Plantation Area Kampung Ayambori The purpose of this study is to identify types of dominant vegetations in the plantation area and former farmland as indicator of soil fertility. Vegetation plays an important role to provide soil fertilities. Certain types, growing in the former farmland can possibly indicate soil fertilities both in the plantation area and former farmland. Aspect of the fertilities likely influences number of vegetative types and diversity of species. Measured vegetation is used to comparing species composition and its diversities.  The former plantation that is taken up as sample has been used for 5 year. Identification of the type was carried out by using vegetative analysis. The valuable index was calculated to determine extensively the role of the dominant types from seeding and wooded phase. There are four different plot sizes. 20x20 meter is utilized purposively for wooded phase, 10x10 meter is pole, 5x5 is used as stake phase and 2x2 meter is made for seeding phase. The species which has important role for the soil fertilities are indentified through exploring various references and the result of interview from local society The finding reveals that vegetative composition in the former farmland which has been used for 5 year consists of three phases, including seeding, stake and pole. Totally, the types are 30 species under each phase. 23 types are in the seeding, 19 types contribute for pole and 6 types are resulted in the wooded phase. The dominant type of seedling phase is Lunasia amara, Piper aduncum is gotten in the stake phase, and the pole one is Mallotus philippensis. However, differently the plantation area carried out 39 species in the seeding phase, sapling phases has 36 species,   pole phase carries out 16 species and 17 species is in the wooden phase. The dominant types is in the seeding and stake phase is Nephelium lappaceum, Lansium domesticum is pole phase, and Durio zibenthinus is resulted in the wooded phase FMIPA Universitas Papua 2018-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/12 10.30862/jn.v14i1.12 Jurnal Natural; Vol. 14 No. 1 (2018); 14 - 28 2746-427X 1412-1328 10.30862/jn.v14i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/12/6

oai:ojs2.jurnalnatural.unipa.ac.id:article/13 2020-02-05T00:57:21Z jn:ART driver

PLASMODIUM DOMINAN DALAM NYAMUK ANOPHELES BETINA (Anopheles spp.) PADA BEBERAPA TEMPAT DI DISTRIK MANOKWARI BARAT Rina A. Mogea Plasmodium female Anopheles index dominant Manokwari Malaria contagious by mosquito Anopheles Betina bringing protozoa parasite in its body (Plasmodium). Plasmodium there are four specieses that is Plasmodium vivax, Plasmodium ovale, Plasmodium malariae and Plasmodium falciparum, but often becomes pathogen that is Plasmodium vivax and Plasmodium falciparum. As for intention of this research is to identify Plasmodium which is dominant at female Anopheles mosquito (Anopheles spp.) and knows distribution pattern of female Anopheles mosquito (Anopheles spp.) in some places in Districts Manokwari Barat. Based on research result done to four locations that is area Amban, Wosi, Sanggeng and Kota is found [by] 1024 mosquito tails. From the amounts only 115 mosquito tails was mosquito Anopheles Betina while the other is mosquito Anopheles male, mosquito Culex and Aedes. Mosquito Anopheles Betina found consisted of 4 species that is Anopheles bancrofti, Anopheles kochi, Anopheles farauti and Anopheles koliensis. Mosquito Anopheles Betina which is dissected, obtained 2 the Plasmodium species in mosquito spit gland is Plasmodium vivax and Plasmodium falciparum, and from calculation by index dominant can be told that both types of this very dominant Plasmodium in Districts Manokwari Barat because its the dominant index > 5%. FMIPA Universitas Papua 2018-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/13 10.30862/jn.v14i1.13 Jurnal Natural; Vol. 14 No. 1 (2018); 29-36 2746-427X 1412-1328 10.30862/jn.v14i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/13/7

oai:ojs2.jurnalnatural.unipa.ac.id:article/14 2020-02-05T00:57:21Z jn:ART driver

PENERAPAN ANALISIS GEROMBOL DAN BIPLOT (STUDI KASUS: HASIL PERTANIAN DAERAH TERTINGGAL DI PROVINSI PAPUA BARAT) Indah Ratih Anggriyani Dariani Matualage Esther Ria Matulessy cluster analysis biplot underdeveloped regions One of the potential of the seven districts underdeveloped areas in West Papua Province is agriculture. In order to develop agricultural potential, an overview of agricultural products is needed including the similarity of regional characteristics and the relative position of the region. The similarity of regional characteristics to agricultural product can be known by cluster analysis. The relative posistion of the area with agricultural  results is known by biplot analysis. Bintuni Bay Regency, South Sorong Regency, Tambrauw Regency and Maybrat Regency have the same characteristics in producing agriculture while Teluk Wondama Regency, Sorong Regency and Raja Ampat Regency have different characteristics. The relative position of agricultural products with the regency is Sorong Regency producing the highest number of food crops while the largest producer of horticulture fruits and vegetables are Teluk Wondama Regency and Raja Ampat Regency. FMIPA Universitas Papua 2018-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/14 10.30862/jn.v14i1.14 Jurnal Natural; Vol. 14 No. 1 (2018); 45 - 50 2746-427X 1412-1328 10.30862/jn.v14i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/14/8

oai:ojs2.jurnalnatural.unipa.ac.id:article/15 2023-04-18T19:20:25Z jn:ART driver

KAJIAN POTENSI PEMBENTUKAN AIR ASAM TAMBANG DARI TANAH LAPISAN PENUTUP BATUBARA ASAL KABUPATEN TELUK BINTUNI Markus Heryanto Langsa Acid Mine Drainage Potential Formation Coal Overburden Materials Acid mine drainage is formed when certain sulfide minerals in rocks are exposed to oxidizing. Upon exposure to oxidizing conditions, these sulfide minerals are oxidized in the presence of water and oxygen to form highly acidic, sulfate-rich drainage.  Acidity levels, and metal composition and concentration depend on the type and amount of sulfide mineral and the presence or absence of alkaline materials. If acid mine drainage has formed, it will be very difficult to stop the process as it is a continuous process until one of the reactions runs out. Acidic water containing heavy metals when flowing into rivers, loker or swamps will damage the condition of the ecosystem in the river. This will certainly cause a decrease in water quality. The purpose of this study is to examine the potential for the formation of acid mine drainage based on the acid base balance method. The results obtained in samples A, B1, B2, and C for the pasta pH test were 5.25, 4.20, 4.71, and 3.14, respectively. The results of the other parameters for the four samples were total sulfur contents (0.005%, 0.021%, 0.008%, 0.47%), acid neutralization ability (3.1, 2.82, 2.45, 13.07 kg H2SO4/ton), maximum acidic potential (0.153, 0.643, 0.245, 14.394 kg H2SO4/ton) and acid-base balance expressed as potential acid production (-12.917, -2.177, -3.065, 11,944). Evaluation of sample C data based on acid-base balance values (11.944 kg H2SO4/ton) and KPA/PKM ratio (<2, 0.17) indicating that sample C has the potential to form acid mine drainage if the coal mining process is carried out. FMIPA Universitas Papua 2018-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/15 10.30862/jn.v14i1.15 Jurnal Natural; Vol. 14 No. 1 (2018); 51 - 60 2746-427X 1412-1328 10.30862/jn.v14i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/15/9

oai:ojs2.jurnalnatural.unipa.ac.id:article/16 2020-02-03T06:33:03Z jn:ART driver

RANCANG BANGUN KAMPUNG EKOWISATA BURUNG MALEO GUNUNG (Aepypodius arfakianus) BERBASIS KEARIFAN LOKAL MASYARAKAT HATAM UNTUK MENINGKATKAN EKONOMI DAN KONSERVASI SATWA ENDEMIK PAPUA DI PEGUNUNGAN ARFAK Agustinus Kilmaskossu ecotourism wattled brushturkey local wisdom wildlife Syoubri Hatam Tribe The wildlife on earth is increasingly urged by human life, where forest functions are used as residential and agricultural land. Illegal logging causes destruction of habitat and excessive use of wildlife causing damage to ecological functions in general. Uncontrolled utilization of eggs and fowls of wattled brushturkeys will accelerate the extinction of these animals in natural habitats. On the other hand the dependence on protein and economic needs of communities in the Arfak Mountains is high as evidenced by the widespread of hunting activities conducted with various purposes of utilization. Breeding efforts for the purpose of utilization need to be given attention in relation to the conservation and fulfillment of human needs.  Efforts to increase the population of the bird are made through the modification of breeding and captive breeding efforts so as to encourage the acceleration of the bird population in nature and on the other hand the community interest in the fulfillment of protein and economic needs can be accommodated. Therefore, basic knowledge of the wisdom of local communities are need to  support the sustainability of this bird in nature. Studies of local community wisdom and natural nest site coverage data need to be immediately obtained to fullfil the purpose. This baseline data is a reference to the establishment of appropriate breeding sites and management is expected to increase the acceleration of this bird population in nature as well as economic improvement through an ecotourism village.  This research was conducted in Minyambouw District around Arfak Mountains Nature Reserve for 2 years (2013-2014). The first year study aims to find out the location of active nesting sites and strategic location to serve as a breeding model. Some active bird nests of the bird have been found in the forest of Syoubri village and then mapped based on GPS data. In the second year, the collection of cultural data of the community (local wisdom) as the basis of customary rules that bind the community. Some people (50%) still do hunting for family consumption and income. To overcome this, the community agreed and happy to make the bird and its nest as a tourist attraction. In relation to that there is a need to do management of ecological tourism for the community and creation of a captive breeding programme through a hatchery effort on wattled brushturkey birds. FMIPA Universitas Papua 2014-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/16 10.30862/jn.v13i1.16 Jurnal Natural; Vol. 13 No. 1 (2014) 2746-427X 1412-1328 10.30862/jn.v13i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/16/10

oai:ojs2.jurnalnatural.unipa.ac.id:article/17 2020-02-03T06:43:32Z jn:ART driver

PEMANFAATAN HUTAN OLEH SUKU KAMORO DI KAMPUNG TAPORMAY DAN AINDUA DISTRIK MIMIKA BARAT-JAUH KABUPATEN MIMIKA PROVINSI PAPUA M.J. Sadsoeitoeboen Utilization of plants and animals Kamoro tribes Tapormay and Aindua villages lowland of tropical rainforests swamp forests mangrove forests A study has been conducted in the lowland of tropical rain forest, swamps and mangroves in the vicinity of Tapormay and Aindua villages in the Far-West Mimika District from Mimika Regency, Papua Province to examine the diversity of plant and animal species and the number of plant and animal species utilized by the Kamoro tribe in the villages in they everyday life. A descriptive method with survey technique and interview to the people in Tapormay and Aindua villages were used to carry out the study. The results of the study found 36 dominant plants species in lowland tropical rain forest, five dominant species in swamp forest and nine dominant plant species in mangrove forest.  While as many of 35 wildlife species were encountered in lowland tropical rain forest, marshes and mangroves consisting of nine species of mammals/marsupials, 24 species of birds and two species of reptiles. Non-timber forest products recorded by the Kamoro in both villages were 47 species divided into 10 groups: food and beverages, household necessities, sleeping equipment and rain hood, hunting tools, medicines, oil, sources of firewood, tribe ornaments, wooden boats, and musical instruments.  Based on the level of forest importance or the most important function of forest area for the Kamoro is as a place to find food, that is: sago and hunting. Interview with all respondents (100%) stated that the main function of the forest is where to take sago followed by hunting activities, picking up firewood, wooden boats, fruits and medicines, and taking building materials and bark. FMIPA Universitas Papua 2014-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/17 10.30862/jn.v13i1.17 Jurnal Natural; Vol. 13 No. 1 (2014) 2746-427X 1412-1328 10.30862/jn.v13i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/17/11

oai:ojs2.jurnalnatural.unipa.ac.id:article/18 2020-02-03T06:59:06Z jn:ART

oai:ojs2.jurnalnatural.unipa.ac.id:article/20 2020-02-03T06:58:06Z jn:ART driver

TUNGAU PADA DAUN MANGGA (Mangifera Indica) Rawati Panjaitan Mites Oligonychus Mango Mites have hostplant specifications or host plants. Mites can be destructive and deadly of which is the host plants a mango crop. Mites on mango crops will cause the leaves yellow and fall off prematurely. This is will lead to the disruption of the productivity of mango. It is necessary for research to identify the mites that infect the mango crop. The method is carried out by direct observation. Mites were taken from the surface of mango leaves later in preservation with several levels of concentration of alcohol, and polyvinyl laktofenol. Then, observed under a microscope and documented for identification purposes. Mites on the leaf surface of manalagi mango (Mangifera indica) found two species, it is Oligonychus sp. and Oligonychus ilicis (Family: Tetranychidae, Superfamily: Tetranychoidea). Oligonychus sp. hallmark is rounded body shape like a spider, with a body is transparent and there are two long seta on posterior part. While Oligonychus ilicis has a characteristic elongated rounded body shape, red, and there is a short posterior seta. Oligonychus sp. and Oligonychus ilicis live as parasites on the surface of mango leaves that can lead to wrinkled leaves, yellow and to fall. Oligonychus life cycle starts from the eggs develop into Nympha and then adult. FMIPA Universitas Papua 2014-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/20 10.30862/jn.v13i1.20 Jurnal Natural; Vol. 13 No. 1 (2014) 2746-427X 1412-1328 10.30862/jn.v13i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/20/13

oai:ojs2.jurnalnatural.unipa.ac.id:article/21 2020-02-03T07:05:02Z jn:ART driver

ANALISIS SENSITIVITAS BEBERAPA WILAYAH DI PAPUA BARAT TERHADAP FENOMENA ENSO Aries Astradhani Subgan ENSO rainfall wavelet analysis SPI Inter-annual climate variability (ENSO) become major issues for sciences for nowadays because the effect of globally.  The purpose of this research is to know the characteristic of the climate on West Papua Region that can investigate and to know variable of the responds to every area of the ENSO phenomena. This is use for the climate parameter for rainfall and sea surface temperature (SST). Technic analysis begins to see periodicities rainfall using wavelet transformation. Next, analysis percentage of rainfall on the phases of ENSO Cases to see how big the influence of ENSO to the Increasing and Decreasing of rainfall in every region. Next step is to use statistic technical to see the connection between rain drop variable into the Standardized Precipitation Index (SPI) to the ENSO index. The result of wavelet analysis to the rainfall showed the domination of periodicities in one year, this indicated that the research area is effected by monsoon and local factors. The result of rain fall percentage and linier correlation analysis of ENSO index to the SPI in each territorial in general showed the ENSO influence. This can be shown by negative correlation score that means, when there is an EL NINO (La Nina) in Pacific Ocean at the same time there is a decreasing or increasing of rainfall in research territorial. The variation in each location responds showed the ENSO effect doesn’t have to influence directly to the rain fall in the research zone. FMIPA Universitas Papua 2014-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/21 10.30862/jn.v13i1.21 Jurnal Natural; Vol. 13 No. 1 (2014) 2746-427X 1412-1328 10.30862/jn.v13i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/21/14

oai:ojs2.jurnalnatural.unipa.ac.id:article/23 2020-02-03T07:11:21Z jn:ART driver

PENDUGAAN PENGELUARAN PER KAPITA DESA DI KABUPATEN JEMBER DENGAN METODE PREDIKSI TAK BIAS LINIER TERBAIK EMPIRIS Dariani Matualage Penduga Area Kecil SAE EBLUP Prediksi Tak Bias Linier Terbaik Empiris Per capita expenditure is very important for a region, It’s estimation are only conducted at national to district level based on National Socio-Economic Survey (Susenas) data conducted by BPS. The survey was designed for a national scale, so the estimation would have low precision if used for smaller sub-populations, such as villages. One attempt to improve the precision of the estimation is by increasing the effectiveness of the sample size known as the small area estimate (SAE). One method in SAE that is very well used for continuous data is the Empirical Best Linear Unbiased Prediction (EBLUP). EBLUP method is used to estimate per capita expenditure of each village in Jember District by using companion variables, the percentage of the Askeskin recipients in the last year. The result is that the estimation of village per capita expenditure in Jember Regency by EBLUP method have better precision than direct estimation. There are three outlier data including Karangrejo, Jember Lor and Sumbersari that have very high per capita expenditures because they are located in urban areas FMIPA Universitas Papua 2014-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/23 10.30862/jn.v13i1.23 Jurnal Natural; Vol. 13 No. 1 (2014) 2746-427X 1412-1328 10.30862/jn.v13i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/23/15

oai:ojs2.jurnalnatural.unipa.ac.id:article/24 2020-04-04T13:04:23Z jn:ART driver

TUMBUHAN BERKHASIAT OBAT YANG DIMANFAATKAN SUKU MOOR DI PULAU RATEWI, KAMPUNG ARUI, DISTRIK NAPAN - WEINAMI KABUPATEN NABIRE M. J. Sadsoeitoeboen Utilization of plants traditional medicines Moor tribe Napan - Weinami Arui are a small village, located on the island Ratewi, the District of Napan - Weinami, Nabire, Papua. Residents, who live in the village Arui, mostly are from the Moor tribes who have a myriad of knowledge about the use of herbs in everyday life, especially as a medicine. Therefore, it is necessary to do a research in order to find out the number of plant species used as a medicine, the manner of exploitation and how the usage of plants, whether singly or in combination, by the Moor tribe in the district of Napan Weinami. This research was carried out using a descriptive method with survey techniques and structured interviews. The results indicated that the Moor tribe inhabiting Arui village, utilizing 39 plants species belonging to 30 families, as medicinal materials. The most widely used is the leaves. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/24 10.30862/jn.v9i1.24 Jurnal Natural; Vol. 9 No. 1 (2010); 1 - 3 2746-427X 1412-1328 10.30862/jn.v9i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/24/16

oai:ojs2.jurnalnatural.unipa.ac.id:article/25 2020-04-04T13:04:23Z jn:ART driver

PERANAN TUMBUHAN OBAT DALAM BUDAYA ANAK SUKU MOILE DI MOKWAM MANOKWARI Simon Sutarno Plant drugs sub-tribe Moile Mokwam ICS The objective of the research was to determine the role of medicinal plants in the livelyhood of children in the sub-tribe Moile. The study was conducted in the area of Mokwam in July 2008. Analysis of Index of Cultural Significance (ICS) is used to measure the role of medicinal plants in the culture of the sub-tribe Moile. The results showed 10 species of plants that have a major role in the lives of children from the sub-tribe Moile. The ten species of plants are Hornstedtia scottiana, Myrmecodia sp1, Myrmecodia sp2, Begonia sp8, Begonia sp9, Actinidia latifolia, Alpinia oseanica, Laportea theterupta, Imperata cylindrica, and Musa sp2. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/25 10.30862/jn.v9i1.25 Jurnal Natural; Vol. 9 No. 1 (2010); 4 - 7 2746-427X 1412-1328 10.30862/jn.v9i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/25/17

oai:ojs2.jurnalnatural.unipa.ac.id:article/26 2021-02-04T14:53:09Z jn:ART driver

Karakterisasi Nukleotida Daerah Ekson 5 dan 6 Gen LDLR Penduduk Papua Karakterisasi Nukleotida Daerah Ekson 5 dan 6 Gen LDLR Penduduk Papua Hamida Achmad Taher Exon 5 and 6 LDLR gene Papuan population The diversity shown in tribes in Papua has the potential to produce varying genetic diversity. LDLR gene is a gene coding for LDL receptor proteins (LDL-R) that play a very important role in cholesterol homeostasis. The LDLR gene consists of 18 exons and 17 introns that stretch for 45 kilos of base (kb). . The exon 5 and 6 regions are important structural parts in encoding amino acids and are also ligand binding regions that mediate the interaction between receptors and lipoproteins containing Apo B-100 or Apo E. This study aims to characterize the nucleotides of Papuan populations with different origins. The method used is the polymorphism chain reaction method and sequencing method to find out the sequence of nucleotide bases. The results of the exon 5 and 6 regional nucleotide characterization of LDLR genes from 9 UNIPA students from Papua showed identical results because they had the same number of nucleotides and nucleotide arrangements. The number of nucleotides for exon 5 area is 123 pb, consisting of T = 22.0%, C = 24.4%, G = 30.9%, A = 22.8%, A + T = 44.8% and C + G = 55.3%. For exon 6 area with nucleotide amount of 123 pb, the nucleotide composition is T = 16.3%, C = 26.8%, G = 27.6%, A = 29.3%, A + T = 45.6% and C + G = 54.4%. The same results show that the two regions are conserved. Keragaman suku di Papua berpotensi menghasilkan keragaman genetik. Gen LDLR adalah gen pengkode protein reseptor LDL (LDL-R) yang berperan sangat penting dalam homeostasis kolesterol. Gen LDLR terdiri dari 18 ekson dan 17 intron yang membentang sepanjang 45 kilo basa (kb). Daerah ekson 5 dan 6 merupakan bagian struktural yang penting dalam menyandi asam amino penyusun daerah pengikat ligan yang memediasi interaksi antara reseptor dan lipoprotein yang mengandung Apo B-100 atau Apo E. Penelitian ini bertujuan mengkarakterisasi nukleotida pada daerah ekson 5 dan 6 gen LDLR penduduk Papua dengan  asal yang berbeda. Amplifikasi gen target dilakukan menggunakan metode reaksi berantai polimerase (PCR) lalu disekuensing untuk mengetahui urutan basa nukleotida. Hasil karakterisasi menunjukkan bahwa karakter nukleotida daerah ekson 5 dan 6 gen LDLR dari 9 mahasiswa UNIPA asal Papua adalah identik karena memiliki jumlah nukleotida dan susunan nukleotida yang sama. Jumlah nukleotida untuk daerah ekson 5 sebesar 123 pb, terdiri dari T=22,0%, C=24,4%, G=30,9%, A=22,8%, A+T=44,8% dan C+G=55,3%. Untuk daerah ekson 6 dengan jumlah nukleotida sebesar 123 pb, komposisi nukleotidanya yakni T=16,3%, C=26,8%, G=27,6%, A=29,3%, A+T=45,6% dan C+G=54,4%. Hasil ini menunjukkan bahwa kedua daerah tersebut adalah lestari. FMIPA Universitas Papua 2019-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/26 10.30862/jn.v15i1.26 Jurnal Natural; Vol. 15 No. 1 (2019): Jurnal Natural; 1 - 10 2746-427X 1412-1328 10.30862/jn.v15i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/26/68

oai:ojs2.jurnalnatural.unipa.ac.id:article/27 2021-02-04T15:12:13Z jn:ART driver

Analisis Polimorfisme Nukleotida Tunggal (SNP) Daerah 3’UTR Gen LDLR Penduduk Papua Asri Saffanah Pratiwi Achmad Taher 3’UTR LDLR gene Papuan SNP Single nucleotide polymorphism (SNP) is a single nucleotide difference in the arrangement of DNA base strands that can show genetic variation. The LDLR gene is a low density lipoprotein (LDL-R) receptor gene that functions to regulate cholesterol levels in the blood. The LDLR gene is composed of 18 exons and contains a 3’untranslated region (3’UTR) which plays an important role in regulating gene expression. This study aims to analyze the SNP in an area of 3'UTR LDLR genes from 6 University of Papua students from Papua. The research was carried out by polymerase chain reaction method to multiply the number of target DNA, then sequenced to find out the sequence of nucleotide bases. The results of this study were from 6 individuals, found 2 SNPs at position *52 and *504 with nucleotide diversity (π) of 0.00149. These polymorphisms forms 3 types of haplotypes, namely GG, GA and AA with a haplotype diversity of 0.600 ± 0.215. FMIPA Universitas Papua 2019-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/27 10.30862/jn.v15i1.27 Jurnal Natural; Vol. 15 No. 1 (2019): Jurnal Natural; 11 - 20 2746-427X 1412-1328 10.30862/jn.v15i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/27/18

oai:ojs2.jurnalnatural.unipa.ac.id:article/28 2021-02-04T17:16:46Z jn:ART driver

Uji Aktivitas Antidiabetes Dengan Metode Penghambatan Enzim α-Glukosidase dan Karakterisasi Kandungan Senyawa Aktif pada Fraksi Metanol dan Kloroform Daun Lavetar (Wedelia biflora (L).DC) Asal Biak Bertha Mangallo Putra, Adrianus Banu Pradana Pulung, Maria Ludya Salah satu jenis tanaman yang dijadikan sebagai obat tradisional adalah tumbuhan Lavetar (W. biflora) yang di manfaatkan oleh masyarakat Biak sebagai obat untuk mengobati penyakit diabetes. Penemuan sumber penghambat α-glukosidase sangat bermanfaat dalam upaya pengembangan obat herbal yang lebih efektif bagi penderita diabetes. Penelitian ini bertujuan untuk menentukan aktivitas antidiabetes fraksi metanol dan fraksi kloroform daun Lavetar dengan metode aktivitas penghambatan enzim α-glukosidase serta menentukan kandungan senyawa aktif dengan menggunakan GCMS. Hasil skrining fitokimia menunjukkan bahwa senyawa aktif pada fraksi metanol adalah flavonoid dan tannin sedangkan fraksi kloroform mengandung senyawa flavonoid, tannin, dan saponin. Uji aktivitas penghambatan enzim α-glukosidase fraksi kloroform tergolong lemah sedangkan fraksi metanol tergolong sangat lemah dengan nilai nilai IC50 masing – masing sebesar 112,562 µg/mL dan 211,151 µg/mL. Hasil Interpretasi spektra FTIR dan skrining fitokimia menunjukkan bahwa gugus fungsi utama adalah flavanoid. Hasil analisis dengan GC-MS menunjukkan bahwa pada fraksi metanol terdapat 84 puncak senyawa dengan senyawa dominan yaitu 1-Heptatriacotanol (m/z = 190) dan fraksi kloroform terdapat 102 puncak senyawa dengan senyawa dominan yaitu cyclopropanebutanoic acid,2-[[2-[[2-[(2-pentylcyclopropyl)methyl]cyclopropyl]metyl]-,metyl ester (m/z = 270). FMIPA Universitas Papua 2019-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/28 10.30862/jn.v15i1.28 Jurnal Natural; Vol. 15 No. 1 (2019): Jurnal Natural; 21 - 29 2746-427X 1412-1328 10.30862/jn.v15i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/28/19

oai:ojs2.jurnalnatural.unipa.ac.id:article/30 2020-03-30T16:41:06Z jn:ART driver

PEMETAAN CAKUPAN DAYA PANCAR SINYAL GSM 2G TELKOMSEL DI KOTA MANOKWARI MENGGUNAKAN ANALISIS SIG Dwi Safitri Muslimin, Abdul Muis Mirino, Rosalina R GIS BTS Telkomsel signal transmit power A study has been conducted on evaluating the coverage signals transmitting power of BTS Telkomsel in the city of Manokwari using geographic information system analysis. This study aims to analyze the coverage of the signal transmitting power of each  BTS Telkomsel in the study area based on the residential and administrative variables, by determining the slope shadow area using 3-dimensional analysis and mapping the coverage of Telkomsel's cellular network in Manokwari Regency with the analysis method of Geographic Information System (GIS). From the study, Telkomsel GSM 2G signal coverage map was obtained based on residential variables, the area covered by the signal is in West Manokwari District around 99.78% covering an area of 9.3 km2, in East Manokwari District around 96.24% covering 2.05 km2, At South Manokwari District around 12.3% covering 0.81 km2 and in North Manokwari District there is no residential area covered by the signal. Based on administrative boundaries, the area of ​​the district covered by GSM 2G Telkomsel is obtained, in West Manokwari District around 64% covering an area of  41.1 km2, in East Manokwari District around 80% covering 15 km2, in South Manokwari District around 50.31% covering 3.7 km2 and in North Manokwari District which is about 4% covering 1.2 km2. With the 3-dimensional analysis method it can also be seen that the slope shadow area that is not reachable by Telkomsel's 2G GSM signal. From the results of data processing, a slope shadow area with an area of ​​0.2 km2. FMIPA Universitas Papua 2018-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/30 10.30862/jn.v14i1.30 Jurnal Natural; Vol. 14 No. 1 (2018); 61 - 73 2746-427X 1412-1328 10.30862/jn.v14i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/30/20

oai:ojs2.jurnalnatural.unipa.ac.id:article/31 2020-04-04T13:04:23Z jn:ART driver

UJI AKTIVITAS ANTIBAKTERI DARI ESTRAK TUMBUHAN AKWAY (Drimys beccariana. Gibbs) Parubak, Apriani S. Akway Drymis beccariana antibacterial tannin flavonoid The plant Akway (Drimys beccariana.Gibbs) is endemic to Papua and is frequently used traditionally by the Arfak tribe as a medicinal plant. We extract the plant by maceration with ethanol. The antibacterial test  is done by Agar diffusion method. As microba test  we used Escheresia coli and Bacillus subtilis. Result obtained from fitochemistry skrinning of the leaf and bark contained alkaloid, flavonoid, steroid, tannin, glikosida, saponin, triterpenoid, steroid and  fenolik. Concentration of active substances from the leaf are flavonoid (0,3680%) and tanin (10.33 %); while from the bark flavonoid 18.35%  and tanin (27.65%).  Antibacterial test showed that the plant could be used as an antibaterial substances. The test showed a moderate up to a strong blocking against Escherecia coli (a gram negative bacteri) and Bacillus subtilis (a gram positive bacteri).  Thus it could be concluded that the Akway plant contain a substance with a bacteriostatic nature that could block the activity of the bacteri. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/31 10.30862/jn.v9i1.31 Jurnal Natural; Vol. 9 No. 1 (2010); 8 - 12 2746-427X 1412-1328 10.30862/jn.v9i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/31/22

oai:ojs2.jurnalnatural.unipa.ac.id:article/32 2020-04-04T13:04:23Z jn:ART driver

AMPLIFIED RIBOSOMAL DNA RESTRICTION ANALYSIS (ARDRA) BAKTERI DENGAN POTENSI ANTIMIKROB YANG BERASOSIASI DENGAN SPONS Jaspis sp. Hermawaty Abubakar Bacteria associations Jaspis sp ARDRA. Sponges are one of the components that compose coral reef which have a potential bioactive substance that has not been utilized. Sponges are generally able to survive in marine waters were nutrients are poor because of associations with other organisms, especially bacteria. This study aimed to isolate and characterize bacteria (endosymbiont and ectosimbion) that produce antimicrobial compounds, and analyze genetic diversity based on Amplified Ribosomal DNA Restriction Analysis (ARDRA). The results of isolation obtained 138 bacterial isolates, which are 70 endofit isolates and 68 surfaces isolates respectively. The results obtained, based on antimicrobial test, was 32 bacterial isolates (45.71%) of the total bacterial isolates that have endofit antimicrobial activity, whereas on the surface bacteria, 20 bacterial isolates (29.41%) of the total surface of the bacterial isolates also have antimicrobial activity. Genetic diversity was carried out on 30 isolates that has the best antimicrobial activity. Amplyfication of 16S rRNA gene is done using specific primers, 63f and 1387r. The profile of 16S rRNA gene band shows a high diversity, which is generated after cutting with three restriction enzymes i.e. RsaI, HaeIII and HinfI. The three restriction enzymes have different cuts and properties. Construction of phylogenetic trees based on analysis of Amplified Ribosomal DNA restriction, grouped 30 isolates from the sponge Jaspis sp. which have a microbial activity on seven filotipe. This grouping is based on the similarities cuts of sites of each isolate after restriction by three different restriction enzymes. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/32 10.30862/jn.v9i1.32 Jurnal Natural; Vol. 9 No. 1 (2010); 13 - 19 2746-427X 1412-1328 10.30862/jn.v9i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/32/23

oai:ojs2.jurnalnatural.unipa.ac.id:article/33 2020-04-04T13:14:41Z jn:ART driver

PEMBUATAN DAN ANALISIS BIO-ETANOL DARI PATI SAGU (Metroxylon sago) ASAL PAPUA Santoso, Bimo Budi Dyah Novitasari Prawatya Istalaksana Sago bio-ethanol Papua Preparation and bio-ethanol analysis of sago (M. sago) starch from Papua have been carried out. The preparation of bioethanol was conducted by hydrolysis, fermentation, distillation and purification. The length of fermentation applied is 3, 4, 5, 6, 7 and 8 days. Bioethanol then was analyzed qualitatively and quantitatively. Qualitative analyses were boiling point and molecular weight determination. Quantitative analyses were determination of the volume of bioethanol content and the composition of bioethanol of every length of fermentation. Based on the qualitative analyses, the samples obtained was ethanol with boiling point of 79 oC and molecular weight of 46 gram/mol. Whereas, based on the quantitative analyses, the more the length of fermentation, the more volume of ethanol obtained and the composition of ethanol increased, with the optimum of the fermentation length was 8 days and the volume ethanol obtained was 123.5 mL, in addition the composition of ethanol at fermentation length of 8 days was 100%. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/33 10.30862/jn.v9i1.33 Jurnal Natural; Vol. 9 No. 1 (2010); 20 - 23 2746-427X 1412-1328 10.30862/jn.v9i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/33/24

oai:ojs2.jurnalnatural.unipa.ac.id:article/35 2020-04-04T13:35:44Z jn:ART driver

IDENTIFIKASI JENIS-IDENTIFIKASI JENIS-JENIS PAKAN ALAMI KUSKUS (PHALANGERIDAE) DI PULAU HARITI DISTRIK NAPAN WEINAMI KABUPATEN NABIRE PAKAN ALAMI KUSKUS (PHALANGERIDAE) DI PULAU HARITI DISTRIK NAPAN WEINAMI KABUPATEN NABIRE Duwiri, Fernando Nunaki, Jan H. Pattiselanno, Freddy Feed of possums Phalangeridae Hariti Island Napan Weinami Nabire Possum as a marsupial animal belongs to the family Phalangeridae are spread quite widely on the island of New Guinea. There are many types of possums found in many small islands of Papua, among others, in the coastal areas of Napan Wenami, Nabire.  Hariti Island is one of the group of islands in the District of Napan Weinami.  This study aims to explore the kinds of natural food of possums on the island Hariti. The results of the study shows that there were 21 plant species eaten by possums, consisted of 17 families, where as the family Moraceae have the largest number of species. Plant parts that are consumed is fruit (43%), leaf (24%) and a combination of leaf and fruit (33%). FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/35 10.30862/jn.v9i1.35 Jurnal Natural; Vol. 9 No. 1 (2010); 24 - 28 2746-427X 1412-1328 10.30862/jn.v9i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/35/26

oai:ojs2.jurnalnatural.unipa.ac.id:article/36 2020-04-04T13:33:23Z jn:ART driver

MORPHOMETRIC VARIATION OF GENUS DOBSONIA FROM INDONESIAN PAPUA Yohanita, Aksamina M Suryobroto, Bambang Suyanto, Agustinus Dobsonia morfometrik variasi, penyebaran Papua Studi morfometrik telah dilakukan dengan mengukur 32 karakter dari 176 spesimen Dobsonia dari Papua. Spesimen-spesimen Dobsonia diwakili oleh enam OTU, yaitu G, B, R, E, SP1, dan SP2. Analisis univariat menghitung seluruh spesimen dewasa yang terdiri dari 171 karakter badan dan sayap dan 176 karakter tengkorak dan gigi pada enam OTU tersebut. Selanjutnya digunakan uji-t dan PCA untuk menghitung G, B, dan R, sedangkan tiga OTU lain (E, SP1 dan SP2) tidak dihitung tetapi ikut diproyeksikan ke dalam scatter plot. Hasil uji-t  (p<0.05) menunjukkan ada seksual dimorfisme pada D. minor dan D. beauforti. Pemisahan  D. magna, D. minor, dan D. beauforti nyata pada karakter badan, sayap, dan gigi berdasarkan PCA. D. emersa terpisah dari spesies lainnya pada karakter badan dan tengkorak. Hasil scatter plot pada SP1 dan SP2 mengelompok dengan D. beauforti pada semua karakter (badan, sayap, tengkorak, dan gigi). Sebanyak 32 karakter yang diukur didapatkan karakter taksonomi yaitu WT, HB, dan TV untuk karakter badan; FA, TIB, dan DIG1P untuk karakter sayap; ONL, POW, PL, dan MH untuk karakter tengkorak; I2M2, M2M2, WM1, dan LM1 untuk karakter gigi. D. minor yang telah ditemukan di Pulau Waigeo tahun 2007 merupakan catatan baru penyebaran spesies ini, sebelumnya hanya tercatat di daratan utama Papua dan Pulau Yapen.  FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/36 10.30862/jn.v9i1.36 Jurnal Natural; Vol. 9 No. 1 (2010); 29 40 2746-427X 1412-1328 10.30862/jn.v9i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/36/25

oai:ojs2.jurnalnatural.unipa.ac.id:article/37 2020-04-04T13:40:13Z jn:ART driver

EKTOPARASIT ACARINA PADA KULIT SISIK ULAR PUTIH (MICROPECIS IKAHEKA) DARI MANOKWARI Krey, Keliopas Ectoparasites are species of parasites that live on the outer surface of the body of an animal. They grow and are very dependent on the life of the host. The acarina complex includes predaceous mites of infinite variation, mites associated with plants and other animals and using a variety of organic substrates as food. The result from the identification showed that acarina parasite on white snake comes from the order Parasitiformes. The acarina encountered in snake’s skin inhabit the dorsal scales in lanes or take advantage of the gaps between scales from the posterior head to the scales near the cloaca. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/37 10.30862/jn.v9i1.37 Jurnal Natural; Vol. 9 No. 1 (2010); 42 - 47 2746-427X 1412-1328 10.30862/jn.v9i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/37/27

oai:ojs2.jurnalnatural.unipa.ac.id:article/38 2020-04-04T13:46:36Z jn:ART driver

PEMBEKUAN SEMEN LELE DUMBO (Clarias Gariepinus BURCHELL 1822) SEBAGAI MODEL KRIOPRESERVASI SEMEN IKAN Lutfi, Lutfi C. gariepinus semen cryopreservation the diluent the concentration of DMSO Effect of four types of diluentss and four concentration of DMSO (5%, 10%, 15% and 20%) against the motility of African catfish sperm were evaluated after storage at freezing temperatures. The steps in preparation the 16 treatments combination of the diluents are preparation of diluents, mixing diluents with DMSO, packing of semen into 0.3-ml straw, equilibration of semen at 4 °C for 30 minutes, freezing of semen in nitrogen vapor liquid at a height of 6.5 cm for 10 minutes, and subsequently storage of semen in liquid nitrogen (-196 0C) for further analysis of post-thawing motility (PTM). The result showed that the highest level of motility of spermatozoa was in treatment P1D15 (45.7 ± 4.3%) and the lowest was in treatment P2D20 (14.5 ± 13.2%). The best diluent in this observation was diluents containing NaCl, KCl, CaCl2 and NaHCO3. The best concentration was DMSO 15%. While the best interaction between the concentration of DMSO diluents is P1D15 treatments containing NaCl, KCl, CaCl 2 and NaHCO3 with a combination of 15% DMSO concentration. The conclusion of the research is that diluents containing NaCl, KCl, CaCl2 and NaHCO3 with a combination of 15% DMSO concentration can be used in cryopreservation of African catfish semen. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/38 10.30862/jn.v9i1.38 Jurnal Natural; Vol. 9 No. 1 (2010); 48 - 53 2746-427X 1412-1328 10.30862/jn.v9i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/38/28

oai:ojs2.jurnalnatural.unipa.ac.id:article/39 2020-04-04T13:52:42Z jn:ART driver

THE DIVERSITY OF FRESHWATER FISHES IN HAYA, MAMBERAMO-PAPUA Binur, Robi Ohee , Henny L. keanekaragaman ikan air tawar Haya Mamberamo-Papua Penelitian ini bertujuan untuk menambah data spesies dan kelimpahan ikan air tawar untuk digunakan dalam perencanaan konservasi di daerah Mamberamo.  Survei dilaksanakan selama 18 hari dari 5 Februari sampai 24 April 2008 pada beberapa habitat, berupa sungai, kali, telaga, dan aliran-aliran air.  Sejumlah 20 spesies yang tergolong ke dalam 17 genus dan 14 famili telah dikoleksi dan ditangkap menggunakan gillnet, cast net, hand net, long line dan tumbuhan beracun Deris sp.  Dua catatan baru ditemukan dari Mamberamo, yaitu Chilaterina lorentzi yang sebelumnya hanya diketahui dari sungai Tawarin pada pantai utara Papua sekitar 200 km sebelah barat Jayapura dan kali Puive, anak sungai Pual dekat Vanimo, PNG; dan Monopterus albus (sejenis ikan introduksi) yang sebelumnya tidak diketahui ada di Mamberamo.  Pada umumnya fauna ikan air tawar yang dikoleksi di Haya sekitar 70% mirip dengan catatan dari Dabra. FMIPA Universitas Papua 2010-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/39 10.30862/jn.v9i1.39 Jurnal Natural; Vol. 9 No. 1 (2010); 54 - 61 2746-427X 1412-1328 10.30862/jn.v9i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/39/29

oai:ojs2.jurnalnatural.unipa.ac.id:article/41 2020-04-07T13:28:31Z jn:ART driver

PENENTUAN NILAI DAN WAKTU OPTIMAL PADA OPSI AMERIKA YANG MEMBAYARKAN DIVIDEN Andi Fajeriani Wyrasti Free Boundary, PDP Black-Scholes Metode Elemen Hingga Opsi Amerika Opsi Amerika adalah salah satu jenis opsi yang memiliki ciri khusus, yaitu dapat diexercise kapan saja sebelum masa jatuh tempo hingga waktu jatuh tempo. Namun kendala muncul saat akan menentukan kapan waktu yang tepat untuk mengexercise opsi. Masalah penentuan waktu optimal untuk mengexercise opsi Amerika memerlukan ketelitian khusus, karena solusi eksaknya tidak dapat langsung ditemukan, terlebih lagi bila terdapat pembayaran dividen pada opsi tersebut. Masalah ini erat kaitannya dengan masalah free boundary. Dengan menggunakan Persamaan Differensial Parsial (PDP)   untuk opsi Call Amerika dan  untuk opsi Put Amerika yang merupakan modifikasi dari PDP Black-Scholes pada opsi Amerika yang membayarkan dividen, dan dengan simulasi numerik menggunakan Metode Elemen Hingga, akan dicari penyelesaian untuk masalah ini. FMIPA Universitas Papua 2009-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/41 10.30862/jn.v8i2.41 Jurnal Natural; Vol. 8 No. 2 (2009): Jurnal Natural; 59 - 65 2746-427X 1412-1328 10.30862/jn.v8i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/41/30

oai:ojs2.jurnalnatural.unipa.ac.id:article/42 2020-04-07T13:36:12Z jn:ART driver

PEMBENTUKAN LAPANGAN FAKTOR DARI SUATU DAERAH INTEGRAL Tri Widjajanti Ramlan, Dahlia Rium Hilum Integral Domains field of quotient enlarge/imbedded polynomial ring Ring of integers under the addition and multiplication as integral domain can be imbedded to the field of rational numbers. In this paper we make  a construction such that any integral domain can be  a field of quotient. The construction contains three steps. First, we define element of field F from elements of integral domain D. Secondly, we show that the binary operations in fare well-defined. Finally, we prove that  f : D ® F is an isomorphisma. In this case, the polynomial ring F[x] as the integral domain can be imbedded to the field of quotient.. FMIPA Universitas Papua 2009-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/42 10.30862/jn.v8i2.42 Jurnal Natural; Vol. 8 No. 2 (2009): Jurnal Natural; 66 - 71 2746-427X 1412-1328 10.30862/jn.v8i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/42/31

oai:ojs2.jurnalnatural.unipa.ac.id:article/43 2020-04-07T13:43:43Z jn:ART driver

ANALISIS TITIK KESETIMBANGAN DAN KESTABILAN PENYEBARAN PENYAKIT MALARIA DI DISTRIK MANOKWARI BARAT BERDASARKAN MODEL EPIDEMIK SIR Fandy, Fandy Andi Fajeriani Wyrasti Tri Widjajanti Malaria epidemic model autonomous system Stability and equilibrium of malaria’s epidemics in Manokwari Barat district based on SIR epidemic model will be discussed in this paper. The SIR epidemic model can be applied to make a model of endemic diseases like malaria. Based on this research, there are 2 types of the equilibrium of malaria’s epidemics in Manokwari Barat District, endemic and non endemic point. FMIPA Universitas Papua 2009-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/43 10.30862/jn.v8i2.43 Jurnal Natural; Vol. 8 No. 2 (2009): Jurnal Natural; 72 78 2746-427X 1412-1328 10.30862/jn.v8i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/43/32

oai:ojs2.jurnalnatural.unipa.ac.id:article/44 2020-04-07T13:54:41Z jn:ART driver

PERCEPATAN TANAH MAKSIMUM DAERAH MANOKWARI BERDASARKAN TINJAUAN KASUS-KASUS GEMPABUMI Lewerissa, Richard Earthquakes Peak Ground Acceleration magnitude The research aimed to determine a Peak Ground Acceleration in manokwari based on Earthquakes cases from 1900 to 2006 using empirical earthquakes formula. This studi was finished at center of meteorology and geophysical agency in Jayapura Papua during September 2008. Result of Mcguirre dan Donovan method shown that in south manokwari have a maximum Peak Ground Acceleration in the amount 448,82 gal to 618 gal. While in north of manokwari have a intermediate peak gruond acceleration in the amount 100 gal to 125 gal. This research describable a temporary simple empirical study so that needed to advance reseacrh about Peak Ground Acceleration in region of manokwari regarding to survei of  geology and stratigrafy condition in manokwari FMIPA Universitas Papua 2009-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/44 10.30862/jn.v8i2.44 Jurnal Natural; Vol. 8 No. 2 (2009): Jurnal Natural; 79 - 84 2746-427X 1412-1328 10.30862/jn.v8i2 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/44/33

oai:ojs2.jurnalnatural.unipa.ac.id:article/45 2020-04-07T13:58:55Z jn:ART driver

POTENSI PLTMH PADA SALURAN PRIMER BENDUNG SUNGAI PRAFI KABUPATEN MANOKWARI Pasalli, Yulianus Rombe Prafi river, microhydro, power plant. This research was conducted in order to provide data, information and the design of hydraulics potential-based PLTMH (microhydro power plant) of the Prafi rivers. It is expected that the work will contribute thinking and planning for the Manokwari Government  and those concerned in microhydro power plant installation to tourism and camp areas. The research was carried out by measuring data on the hydraulics potentials of debit and head. Followed with site condition observation of the microhydro power of tourism and camp areas. The collected data were then analyzed as bases for the microhydro power design emphasizing on the civil work, mechanical work, and the electric installation for microhydro power.The results obtained were civil work design of microhydro power with designed debit of 0,455 m3/s, and 3 m head, and generated power of 10 kW. The civil work design include intake submerged with size 0,58 m x 0,65 m, trashrack  size 0,68 m x 0,85 m, material from strip iron 3 mm x 30 mm, head race size  0,5 m x 0,91 m, from the couple of crevice stone, inclined 1:500, silt basins size 1,5 m x 2 m,  depth 2 m, made of the couple of crevice stone. Spillway size  0,4 m x 1,8 m, spillways is made above turbine pool, turbine pool is planned from concrete with diameter  0,80 m depth 1 m, draft tube is used PVC pipe, kind: AW, thick grey, diameter 8 inch,  tail race there are 2 kind of tail race, from crevice stone and and soil, power house is planed  with size  4 m x 5 m, foundation: couple crevice stone, pool, slop and concrete ring balk, wall concrete brick, floor white floor tile and roof  iron sheeting. The mechanical installation using by turbine Propeller Open Flume with electric power effectif 10 kW or the specific speed 927 (rpm, HP, m), speed 999,76 rpm, with total efficiency 74,6 %, the fulley diameter  (Dpt) 262,5 mm, Turbine Speed (Nt) 1000 rpm, for electric installation using by generator induction AC generator 10 kW, 220/380 Volt, 50 Hz, speed 1500 rpm, 4 poles, cos φ 0,8, and efficiency 0,9. FMIPA Universitas Papua 2009-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/45 10.30862/jn.v8i2.45 Jurnal Natural; Vol. 8 No. 2 (2009): Jurnal Natural; 85 - 89 2746-427X 1412-1328 10.30862/jn.v8i2 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/45/34

oai:ojs2.jurnalnatural.unipa.ac.id:article/46 2023-04-19T08:06:27Z jn:ART driver

PERANCANGAN ALAT UKUR INTENSITAS CAHAYA BERBASIS ARDUINO LEONARDO MENGGUNAKAN SENSOR LDR (Light Dependent Resistor) Manik, Simson Muslimin, Abdul Muis Subgan, Aries A. Arduino Leonardo LCD LDR Light Lux meter is a device used to measure the intensity of light in an area. The purpose of this thesis is to design a light intensity measuring device using LDR components as a light sensor, comparing light intensity measuring devices made using LDR sensors and Arduino Leonardo based microcontrollers with standard tools. The data used in this study are primary data. The data obtained is then processed using MS. Excel. The type of light bulbs used are Philips CFL (Philips Essential) lamps, each lamp having a power of 5, 8, 11, 14, 18, 23, 27, 32, 35, and 50 watts with a luxmeter vertical distance of 1, 2 and 3 meters from the lamp. From the results of testing the tools and processing of comparative data between the Lux Meter Standard and the designed Lux ​​Meter obtained as follows: the vertical distance of the tool by 1 meter from the lamp produces an average error difference of 12,571 lx and the percentage of average errors the average is 8.77%, while for the vertical distance of the tool is 2 meters from the lamp the average error difference value is 2,358 lx and the average error percentage is 7.98%, and for the vertical tool distance is 3 meters from the lamp the difference in error value is an average of 0.92 lx and an average error percentage of 5.85%. FMIPA Universitas Papua 2020-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/46 10.30862/jn.v16i1.46 Jurnal Natural; Vol. 16 No. 1 (2020): Jurnal Natural; 1 - 13 2746-427X 1412-1328 10.30862/jn.v16i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/46/35

oai:ojs2.jurnalnatural.unipa.ac.id:article/47 2021-05-18T15:08:02Z jn:ART driver

Pemetaan Potensi Bahaya Gempa Bumi di Provinsi Papua Barat Menggunakan Metode Percepatan Tanah Maksimum dan Point Source Analysis Faisol, Arif earthquakes peak ground acceleration point source analysis Gumbel distribution, West Papua. Earthquakes are one of the main hazards in West Papua. Based on information from the National Disaster Management Authority (BNPB), the frequency of the destroyed earthquakes in West Papua is more than 9 times from 2002 until 2015. Peak Ground Acceleration (PGA) is one factor that caused destroy on earthquakes. This parameter has been used in this research to estimate the level of earthquakes hazard in West Papua at any period that combined with Point Source analysis and Gumbel distributions method. Seismic data recording of 1970 – 2017 that obtained from Meteorological, Climatological, and Geophysical Agency (BMKG) and United States Geological Survey (USGS) used in this research. The research shows that the level of earthquakes in West Papua is lower to the middle because the PGA value is < 0,70 g at any period. Generally, the level of earthquakes hazards in the north area more higher than in other areas because of some of the fault in the north area. FMIPA Universitas Papua 2020-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/47 10.30862/jn.v16i1.47 Jurnal Natural; Vol. 16 No. 1 (2020): Jurnal Natural; 14 - 24 2746-427X 1412-1328 10.30862/jn.v16i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/47/36

oai:ojs2.jurnalnatural.unipa.ac.id:article/48 2023-04-13T06:38:12Z jn:ART driver

AIR LIMBAH LAUNDRY : KARAKTERISTIK DAN PENGARUHNYA TERHADAP KUALITAS AIR Yuliana, Yuliana Langsa, Markus Heryanto Sirampun, Alfhons D. Wastewater Laundry Well Water Detergents Phosphte At present the laundry business is one of the promising businesses with targeted consumers from the upper middle class who do not have much time to wash clothes at home. Like other industries, laundry also produces wastewater that can have a negative impact on the environment if it is not managed properly. This study characterizes laundry wastewater and looks at its effect on the quality to the groundwater/wells close to the laundry business. Water samples include TSS, TDS, Turbidity, pH , COD, BOD, Phosphate, and Detergent parameters analyzed according to SNI and/or the HACH method (DR3900). Characterization of the laundry wastewater samples show a high level of detergent and phosphate parameters ranging from 27,7-39,4 mg/L and 6,1-27,1 mg/L, respectively with the highest levels corresponds to Laundry wastewater samples at Jalan Baru. The detergent and phosphate contents in all well water samples are still below the required quality standard. Although the concentrations of parameters analysed in the laundry wastewater  are very high and above the guidance, it is obvious from the well water samples results that there is no effect of laundry waste waters to the quality of ground waters. Saat ini usaha laundry merupakan salah satu usaha/bisnis yang menjanjikan dengan target konsumen dari golongan masyarakat menengah ke atas yang tidak memiliki banyak waktu untuk mencuci pakaian di rumah. Seperti kegiatan industri lainnya, laundry juga menghasilkan air limbah yang dapat berdampak negatif ke lingkungan jika tidak dikelola dengan benar. Penelitian ini bertujuan mengkarakterisasi air limbah laundry dan melihat pengaruhnya terhadap kualitas air tanah/sumur yang berada dekat dengan usaha laundry. Sampel air meliputi parameter TSS, TDS, Kekeruhan, pH, COD, BOD, Fosfat, dan Detergen dianalisis menurut SNI dan/atau metoda HACH (DR3900). Karakterisasi sampel air limbah laundry menunjukkan kadar yang tinggi untuk parameter yang diuji terutama kandungan detergen dan fosfat dengan kisaran masing-masing 27,7-39,4 mg/L dan 6,1-27,1 mg/L dengan kadar tertinggi terdapat pada sampel air limbah laundry di Jalan Baru. Kandungan detergen dan fosfat pada semua sampel air sumur masih di bawah nilai baku mutu yang dipersyaratkan. Meskipun konsentrasi parameter yang telah diuji pada air limbah tinggi namun dari hasil penelitian pada 3 sampel air limbah dan 3 sampel air sumur diketahui bahwa air limbah tidak begitu mempengaruhi atau mencemari air sumur. FMIPA Universitas Papua 2020-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/48 10.30862/jn.v16i1.48 Jurnal Natural; Vol. 16 No. 1 (2020): Jurnal Natural; 25 - 33 2746-427X 1412-1328 10.30862/jn.v16i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/48/37

oai:ojs2.jurnalnatural.unipa.ac.id:article/49 2020-07-01T23:52:59Z jn:ART driver

MODEL DAN PELUANG TERJADINYA HUJAN BERDASARKAN KELEMBABAN MENGGUNAKAN REGRESI LOGISTIK BINER DI KABUPATEN MANOKWARI Ardianty, Inayatul Farach Anggriyani, Indah Ratih Biner Regression Logistic Odds Ratio Humidity Rain Manokwari Regrency has a tropical climate. This results in significant rainfall. One factor that stimulates rain is humidity. By using binary logistic regression, the model an chance of rainfall based on humidity can be determined. Logistic regression analysis is used to determine the relationship between categorical  scale response variables and numeric or categoric scale explanatory variables. If response variable used is nominal scale with  two possoble value (0 and 1), then it is called binary logistic regression. Estimation of the model  is done by logit  transformation. The model produce in this  study is g(x) = -23.443 + 0.289  humidity. The accuracy of the model is 70.4 percent and the probability of rain for humidity lowering one unit will be reduced to 0.74. FMIPA Universitas Papua 2020-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/49 10.30862/jn.v16i1.49 Jurnal Natural; Vol. 16 No. 1 (2020): Jurnal Natural; 34 - 37 2746-427X 1412-1328 10.30862/jn.v16i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/49/38

oai:ojs2.jurnalnatural.unipa.ac.id:article/50 2020-07-01T22:13:34Z jn:ART driver

JENIS KUSKUS (Phalangeridae) DI PULAU RATEWI NABIRE PAPUA Pattiselanno, Freddy Iyai, Deny A. Cuscus, Ratewi island, Nabire, Papua Cuscus exploration has been conducted in order to identify the presence of cuscus in Ratewi Island, around the coastal site of Napan Yaur, Nabire, Papua.  The study was designed in descriptive method with case study.  The results indicated that two cuscus species was found, they were Kuskus Coklat (Phalanger orientalis) and Kuskus Bertotol (Spilocuscus maculatus) FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/50 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 1 - 3 2746-427X 1412-1328 10.30862/jn.v8i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/50/39

oai:ojs2.jurnalnatural.unipa.ac.id:article/51 2020-07-01T22:22:26Z jn:ART driver

HABITAT IKAN PELANGI ARFAK (Melanotaenia arfakensis ALLEN) BERDASARKAN TAHAP PERKEMBANGAN DI SUNGAI NIMBAI DAN SUNGAI AIMASI, MANOKWARI Manangkalangi, Emmanuel Rahardjo, M. F. Sjafei, Djadja S. habitat ontogeny, Melanotaenia arfakensis, stream, slow littoral, medium littoral, pool, run. The habitat ontogeny of arfak rainbowfish (Melanotaenia arfakensis Allen) in Nimbai and Aimasi streams, Prafi river system were studied from June to December 2007.  Sampling was carried out monthly in four different habitat types using hand net. Slow littoral and medium littoral are two habitat types which characterized by slowly water velocity, availability of submerged vegetation and warmer temperature, however the run and pool areas have higher water velocity and dissolve oxygen. The former habitats are essential for all developed stages, i.e. feeding, spawning and nursing of this species. On the other hand, the later habitat types particularly were only for young and adult fish, due to their swimming abilities as well as maximize of oxygen uptake. In order to maintain the population of this species, conservation is needed to all of their natural habitats for continuing their life cycles. FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/51 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 4 - 11 2746-427X 1412-1328 10.30862/jn.v8i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/51/40

oai:ojs2.jurnalnatural.unipa.ac.id:article/52 2020-07-01T22:28:31Z jn:ART driver

FRAGMENTASI mtDNA MAMBRUK CRISTATA DAN VICTORIA OLEH BEBERAPA ENZIM RESTRIKSI: Fragmentation of mtDNA of Goura cristata and victoria by some Restriction Enzymes Kilmaskossu , Agust Fragmentation of mtDNA, Goura cristata, Goura victoria, Enzyme Restriction, HaeIII, HpaII, RsaI The difference between Goura cristata and Goura Victoria could be distinguished by comparison of the morphology characters than the internal factors.  Internal factors such as genetics characters are required in certain cases to distinguish the bird species. Therefore, a study on the mtDNA of the birds has been done.  Three restriction enzymes have been used to produce fragmentation of mtDNA of the birds and analysis the differences between them.  One of the three enzymes, RsaI, shows a difference in the fragment mtDNA; and could be used as a marker in differentiation of bird species especially in the Goura species. FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/52 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 12 - 16 2746-427X 1412-1328 10.30862/jn.v8i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/52/41

oai:ojs2.jurnalnatural.unipa.ac.id:article/53 2020-07-01T22:35:00Z jn:ART driver

KESTABILAN HABITAT LAMUN DITINJAU DARI KOMPOSISI DAN KEPADATAN JENIS Lefaan, Paskalina Th. Seagrasses habitats have both physical and ecological functions that support adjacent waters qualities and its dwelling organisms. There are varies of pressure on seagrass environmental, especially due to people activities that could decrease its function and habitat stabilities. The study aimed to determine about seagrass habitat stabilities from its species composition and/or densities. Line transect-plots and exploration methods were used in five locations of Manokwari coastal waters, that were, Andai, Rendani, Wosi, Briosi, and Tanjung Manggewa. There are five pioneer species (Cymodocea rotundata, Halodule pinifolia, H. uninervis, Syringodium isoetifolium, Halophila ovalis) and 3 climax species (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii). The pioneer only found in Andai and Wosi, however both pioneer and climax encountered in three other locations. In Rendani and Tanjung Manggewa higher density of climax species (T. hemprichii) were 617.7 and 828.0 stands m-2, respectively, although in Briosi the higher pioneer (C. rotundata) of 570.7 stands m-2. These conditions showed that seagrass habitat in Rendani and Tanjung Manggewa are more stable compared to Briosi, as well as Andai and Wosi. It concluded that pioneer species found in newly formed habitat or disturbed, on the other hand, climax in more stable habitat. FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/53 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 17 - 21 2746-427X 1412-1328 10.30862/jn.v8i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/53/42

oai:ojs2.jurnalnatural.unipa.ac.id:article/54 2020-07-01T22:42:09Z jn:ART driver

AREA DISTRIBUSI DAN VARIASI MORFOLOGI ULAR PUTIH (Micropechis ikaheka) DI PAPUA Krey, Keliopas The white snake, Micropechis ikaheka, area of distribution, morphological variation, Papua The objectives of the research were to identify the area of distribution and the specific habitat of the white snake (Micropechis ikaheka) in Papua (Western New Guinea), and to explain the morphological variation among the populations of that snake.  About eight months of field work were taken to conduct the survey (April 2002; June 2006; and March to Augusts 2007) in several areas in the mainland and off-shore islands of Papua. Observation were carried out in the field at night and during the day to collect the snake. The studies were done on a collection of specimens that were found in the Museum Zoologicum Bogoriense LIPI in Cibinong, Conservation International in Jayapura and the Biology Laboratory of the Papua State University in Manokwari.The results showed that the white snake Micropechis ikaheka can be divided into three separate groups based on the color of the scales, i.e. Black, Brown and Yellow. The black one is the new group found in this research, and also there was one individual snake with transitional coloration between the brown group and the yellow group. However, M. Ikaheka  is common and has a relatively wide distribution in New Guinea, but every group has a specific and limited area of distribution. The group with black color is distributed in the islands of Waigeo and Batanta and the group with yellow color is distributed from Manokwari, Sorong, upto the islands of Salawati, Batanta and Waigeo. Meanwhile, the brown colored sanke is distributed from the island of Yapen, mainland of Waropen, Mamberamo,  Jayawijaya, Mindiptana up to Papua New Guinea. FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/54 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 22 - 28 2746-427X 1412-1328 10.30862/jn.v8i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/54/43

oai:ojs2.jurnalnatural.unipa.ac.id:article/55 2020-07-01T22:51:27Z jn:ART driver

PEMANFAATAN TUMBUHAN SEBAGAI OBAT TRADISIONAL OLEH MASYARAKAT SUKU MAYBRAT DI KAMPUNG RENIS DISTRIK MARE KABUPATEN SORONG SELATAN Hara, Frengki L.K. Nunaki, Jan H. Sadsoeitoeboen, M.J. The aims of the research were to identify the main plant species which are used as Traditional medicines by Maybrat tribe in Sorong, to describe the method of preparation and uses of some of the medicinal plants, and to study methods for passing the knowledge of traditional medicines amongst the tribe. The tribe has used 47 species of medicines plants from 30 families. Part of medicines plant used by leaf 28 plant species, braise is the way of a lot of gathering medicines 10 species, without gathered by as much 11 species and way of medication of a lot of drinkedly 19 species. From 47 species of medicines plant exploited by tribe Maybrat in the reality its 1 species own the economic value that is Afa ati (Laportea indica). FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/55 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 29 - 36 2746-427X 1412-1328 10.30862/jn.v8i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/55/44

oai:ojs2.jurnalnatural.unipa.ac.id:article/56 2020-07-01T22:55:46Z jn:ART driver

ISOTOPIC CHARACTERISATION OF ORGANIC MATERIALS LEACHED FROM LEAVES IN WATER Langsa, Markus Heryanto isotop, bahan organik, fotosintesis. Komposisi isotop dari senyawa organik yang berasal dari peristiwa penguraian beberapa jenis daun tumbuhan dalam air bervariasi yang disebabkan perubahan aktifitas mikrobiologi. Nilai rataan d13C sampel daun sebelum perlakuan diperoleh berada pada kisaran nilai d13C tumbuhan daratan secara umum yang menggunakan jalur fotosintesis C3. Komposisi isotop dari senyawa organic yang mengalami penguraian dari daun segar wandoo eucalyptus ditemukan mengalami pengurangan yang kontinyu dari nilai d13C selama tiga bulan periode penguraian. Perubahan nilai d13C juga berhubungan dengan perubahan jenis dan komposisi senyawa makromolekul. Sebagai contoh, lignin yang memiliki nilai d13C rendah berperan dalam menurunkan nilai d13C dari residu sampel setelah periode pengamatan FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/56 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 37 - 47 2746-427X 1412-1328 10.30862/jn.v8i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/56/45

oai:ojs2.jurnalnatural.unipa.ac.id:article/57 2020-07-01T23:01:46Z jn:ART driver

AKTIVITAS ANTIOKSIDASI MINYAK BUAH MERAH DARI KULTIVAR Pandanus Conoideus L YANG BERBEDA Taher, Achmad Repasi, Mery S Antioxidative activiy, Pandanus conoideus L The research was aimed to test the antioxidative activity of the buah merah oil from two cultivars Pandanus conoideus L; MTW-W and MMS-M. In vitro analysis the antioxidative activity of the buah merah oil was determinated using Thiobarbituric Acid test (TBA test). The research revealed that the buah merah oil from MTW-W cultivar produces highest antioxidative activity than MMS-M cultivar. The antioxidative activities of these two tested cultivars are 24 – 70% and 30 – 53%, respectively. FMIPA Universitas Papua 2009-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/57 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 48 - 51 2746-427X 1412-1328 10.30862/jn.v8i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/57/46

oai:ojs2.jurnalnatural.unipa.ac.id:article/58 2020-07-01T23:13:58Z jn:ART driver

LACTARAN SESQUITERPEN VELLERAL DARI KULIT BATANG TUMBUHAN DRYMIS BECCARIANA GIBBS. (WINTERACEAE) YANG BERSIFAT SITOTOKSIK DAN ANTIMIKROBA Santoso, Bimo Budi Santi, Darma Langsa, Markus H. Mogea, Rina D. beccariana, Velleral, A. salina, Sel maurine P-388, S.aureus, C. albican Isolation guided by brine-shrimp ( Artemia salina) bioassay from the stem bark of .D. beccariana Gibbs. led to isolate a bioactive compound called Velleral (1) ((3aS,8aS)-2,2,8-trimethyl-3,3a.6.8a-tetrahydro-1H-azulene-5,6-dicarbaldehyde).The structure of this compound was elucidated based on physical and spectroscopic data (UV, IR, , 1H NMR, 13C-NMR and  GC-MS). This compound showed significant active in the  Artemia salina bioassay with IC50 2.92 µg/mL and  exhibited siginificant cytotoxicity against  murine P-388 leukemia cells with IC50 3,39 μg /mL.Moreover, the compound exhibited antibacterial and antifungal activity especially against  Staphyloccocus aureus  ATCC 25923 and Candida albians respectively. This result indicates that stem bark of D. beccariana is a potential source of bioactive compounds. FMIPA Universitas Papua 2020-07-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/58 10.30862/jn.v8i1.58 Jurnal Natural; Vol. 8 No. 1 (2009): Jurnal Natural; 52 - 57 2746-427X 1412-1328 10.30862/jn.v8i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/58/47

oai:ojs2.jurnalnatural.unipa.ac.id:article/59 2021-04-22T07:14:45Z jn:ART driver

ANALISIS MORFOMETRI DAERAH ALIRAN SUNGAI (DAS) MUARI DI KABUPATEN MANOKWARI SELATAN Pamuji, Khristian Enggar Lestari, Oktaviyanti A. Mirino, Rosalina R. DAS Muari, Karakteristik DAS, Morfometri Sungai Morfometri pada DAS merupakan ukuran kuantitatif karakteristik DAS yang terkait dengan aspek geomorfologi suatu daerah. Morfometri DAS juga digunakan untuk menyatakan keadaan jaringan alur sungai secara kuantitatif. Keadaan yang dimaksud antara lain meliputi aspek linier, aspek area dan aspek relief. Tujuan dilakukannya penelitian ini yaitu untuk mengetahui karakteristik DAS berdasarkan morfometri di DAS Muari Kabupaten Manokwari Selatan. Metode yang digunakan didapatkan dari pengolahan citra DEM-SRTM dan dipadukan dengan peta RBI melalui aplikasi ArcGIS (ArcMap 10.3). Hasil penelitian menunjukkan bahwa DAS Muari terdiri dari 5 orde sungai dengan luas DAS 78.8 km2 (7880 ha), keliling DAS 44.7 km, kerapatan drainase 2.25, frekuensi sungai 3.2, tekstur drainase 5.7, rasio lingkaran 0.50, faktor bentuk 3,29, rasio elongasi 2.05 dan rasio relief 0.4. Berdasarkan analisis morfometri, DAS Muari dikategorikan DAS sangat kecil, memiliki bentuk sungai yang memanjangdan memiliki relief yang tidak curam FMIPA Universitas Papua 2020-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/59 10.30862/jn.v16i1.59 Jurnal Natural; Vol. 16 No. 1 (2020): Jurnal Natural; 38 - 48 2746-427X 1412-1328 10.30862/jn.v16i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/59/48

oai:ojs2.jurnalnatural.unipa.ac.id:article/60 2023-04-18T18:14:30Z jn:ART driver

ANALISIS NERACA AIR DAS MUARI DI DISTRIK ORANSBARI KABUPATEN MANOKWARI SELATAN Mansnembra, Puji L. Mirino, Rosalina R. Pamuji, Khristian Enggar Neraca Air, DAS Muari, Ketersediaan Air, Kapasitas Tampung Sungai Penelitian tentang Analisis Neraca Air DAS Muari bertujuan mengetahui ketersediaan air di DAS Muari, kebutuhan air domestik dan non domestik serta neraca DAS Muari. Data yang digunakan dalam penelitian ini yaitu data primer dan data sekunder. Data primer berupa pengukuran pada penampang kering sungai untuk mengetahui kapasitas tampung sungai serta karakteristik DAS Muari, sedangkan data sekunder berupa data iklim (curah hujan bulanan, hari hujan, temperatur dan lama penyinaran selama 10 tahun terakhir dari tahun 2009-2018 yang diperoleh dari BMKG Manokwari Selatan), data kebutuhan domestik dan data kebutuhan non domestik. Data yang telah diperoleh kemudian diolah menggunakan MS. Excel dan Arcgis. Hasil dari pengolahan data untuk ketersediaan air DAS mantap diperoleh nilai sebesar 5.400.697,68 m3/tahun, untuk kebutuhan air domestik dan non domestik sebesar 4.578.872,45 m3/tahun. Dari nilai ketersediaan air dan kebutuhan air maka diperolehlah neraca air DAS Muari sebesar 821.825,23 m3/tahun, nilai ini menunjukkan bahwa DAS Muari mengalami surplus. FMIPA Universitas Papua 2020-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/60 10.30862/jn.v16i1.60 Jurnal Natural; Vol. 16 No. 1 (2020): Jurnal Natural; 49 - 60 2746-427X 1412-1328 10.30862/jn.v16i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/60/49

oai:ojs2.jurnalnatural.unipa.ac.id:article/61 2020-07-02T19:11:09Z jn:ART driver

PENDEKATAN ANALISIS REGRESI INDIVIDUAL UNTUK DATA LONGITUDINAL Bataradewa, Surianto Regression individually analysis, cassical regression analysis ,longitudinal data Classical Regression analysis are usually used in analysing longitude data or repeated measurement data (where response from each individual were measured in a period of time). Assumption of the analysis is no correlation among a couple measurement at same object. Whereas the repeated measurement data in same object research usually  have correlation. Neglecting of correlation in regresion analysis will result in an uncertain conclusion.Regression individually analysis for longitudinal data attention the influence of individual effect and its interaction with time. So that with the reason, withdrawal of conclusion will be more be trusted its truth.The research objective is to compare regression individually analysis approach for longitudinal data with classical regression analysis. Data in this research is used  simulation data.Result of research indicate that regression individually analysis to longitudinal data very success improve information about change of response from time to time FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/61 Jurnal Natural; Vol. 7 No. 2 (2008): Jurnal Natural; 53 - 56 2746-427X 1412-1328 10.30862/jn.v7i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/61/50

oai:ojs2.jurnalnatural.unipa.ac.id:article/62 2020-07-02T19:16:26Z jn:ART driver

SYARAT CUKUP SUATU OPERATOR LINEAR A SEBAGAI GENERATOR DARI FUNGSI KOSINUS COS Widjajanti , Tri In this paper, it is discussed an operator A as generator of cosine function Cos by determine the sufficient conditions for operator A as generator of cosine function Cos. FMIPA Universitas Papua 2008-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/62 Jurnal Natural; Vol. 7 No. 2 (2008): Jurnal Natural; 57 - 62 2746-427X 1412-1328 10.30862/jn.v7i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/62/51

oai:ojs2.jurnalnatural.unipa.ac.id:article/63 2020-07-02T19:22:51Z jn:ART driver

STUDI PENGARUH WARNA RUANGAN TERHADAP ILLUMINASI LAMPU LED Rehiara, Adelhard Beni Illumination, background color, LED Many previous researches have come to the evidence that LEDs are very efficient in converting electricity to become light. Therefore the question is how background color of a room can influence the illumination of LEDs? Result shows that LEDs illumination is supported by light reflection of the background color. Light from LEDs can be reflected more perfect than neon lamp and glow lamp.. FMIPA Universitas Papua 2008-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/63 Jurnal Natural; Vol. 7 No. 2 (2008): Jurnal Natural; 63 - 67 2746-427X 1412-1328 10.30862/jn.v7i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/63/52

oai:ojs2.jurnalnatural.unipa.ac.id:article/64 2020-07-02T19:27:21Z jn:ART driver

MODEL HIDRODINAMIKA 2-D ARUS PASANG SURUT PERAIRAN TELUK YOSUDARSO, PAPUA Mamengko, Fendry Yandi Samuel Tide, POM, Two-Dimension The pattern of two-dimension current in the Yosudarso Bay waters generated by 8 main components (M2,S2,N2,K1,O1,P1,Q1) of tide have been modeled using hydrodynamic model of Pricenton Ocean Model (POM).  In the spring and neap conditions, when flood towards ebb, generally the currents move outward of the bay, with maximum magnitudes of 0.15 m/s and 0.14 m/s respectively. Meanwhile, when ebb towards flood, the currents move inward to the bay, with maximum magnitudes of 0.10 m/s and 0.09 m/s respectively.  The generated-current velocities are relatively weak so that the Yosudarso bay waters is characterized as calm waters.  This situation is also supported by the tidal range that less than 2 meters FMIPA Universitas Papua 2008-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/64 Jurnal Natural; Vol. 7 No. 2 (2008): Jurnal Natural; 68 - 73 2746-427X 1412-1328 10.30862/jn.v7i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/64/53

oai:ojs2.jurnalnatural.unipa.ac.id:article/65 2020-07-02T19:31:27Z jn:ART driver

IMPLEMENTATION OF MECHINE VISION IN CONTROLING A MODELLED GANTRY CRANE Rehiara, Adelhard Beni Mesin derek sangat bermanfaat dalam membantu pekerjaan manusia. Dalam pengoperasian mesin derek, dua faktor utama yang perlu diperhatikan adalah keselamatan kerja dan produktivitas. Untuk meningkatkan kedua faktor tersebut, dibutuhkan alat pengontrol yang baik untuk mengantisipasi fenomena ayunan yang timbul akibat pergerakan mesin. Vision system telah diaplikasikan dalam proyek ini sebagai detektor jarak untuk mendeteksi jarak sepanjang pergerakan troli mesin derek. Pengontrol fuzzy merupakan jenis pengontrol cerdas yang dipilih untuk memecahkan ketidaklinearan yang ditimbulkan oleh vision system dan sensor sudut. Pengimplementasian dilakukan menggunakan software Labview dengan Vision dan Fuzzy Control toolkit. Proyek ini berhasil menerapkan vision system dan pengontrol fuzzy dalam mengendalikan sebuah model mesin derek. FMIPA Universitas Papua 2008-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/65 Jurnal Natural; Vol. 7 No. 2 (2008): Jurnal Natural; 74 - 78 2746-427X 1412-1328 10.30862/jn.v7i2 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/65/54

oai:ojs2.jurnalnatural.unipa.ac.id:article/66 2020-07-02T23:02:40Z jn:ART driver

KARAKTERISTIK MORFOLOGI KANGURU POHON CENDERAWASIH (Dendrolagus ursinus) DI KAWASAN PEGUNUNGAN ARFAK MANOKWARI Mustamu, Jannie T. Dwiranti, F. Yohanita, Aksamina M. Kanguru pohon cenderawasih, morphology, dimorfisme, Pegunungan Arfak This research was carried out to study the morphological charachteristics of the tree kanguroo in the Arfak Mountains, especially in the village of Mokwam and Umbui.  Observation was done on the qualitative and quantitative charachters. Four kanguroo tree was observed during the study. FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/66 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 1 - 4 2746-427X 1412-1328 10.30862/jn.v7i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/66/55

oai:ojs2.jurnalnatural.unipa.ac.id:article/67 2020-07-03T15:57:03Z jn:ART driver

PEMANFAATAN HEWAN SEBAGAI OBAT TRADISIONAL DALAM KEHIDUPAN SUKU HATTAM DI KAMPUNG MOKWAM MENYAMBOUW Sutarno , Simon Rumbino, Amon A. Traditional drug, tribe of Hattam, Mokwam Village of Minyambouw This research aim to document traditional knowledge (indigenous knowledge) of the Hattam tribe in exploiting animals as traditional drug, in which the observation was done on the animal type, way of exploiting, and also on other culture and knowledge related to pattern of exploiting animals as drug in the life of the tribe. The result shows that there are 9 animals used as traditional drug in the life of the Hattam tribe in Mokwam village, that is: Rana grisea, Litoria arfakiana, Litoria micromembrana, Litoria angiana, Nyctimystes pulchra, Accipiter sp., Morelia viridis, Micropechis sp., and Sus sp. The animals were used as drugs to cure skin disease (purities), bloated, flatulent stomach, wounds, and in increasing vitality. FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/67 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 5 - 8 2746-427X 1412-1328 10.30862/jn.v7i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/67/58

oai:ojs2.jurnalnatural.unipa.ac.id:article/68 2020-07-03T15:55:26Z jn:ART driver

JENIS-JENIS GULMA PADA PADI SAWAH DI DAERAH TRANSMIGRASI PRAFI, MANOKWARI Sadsoeitoeboen, M.J. Natalia, Fajar Ria Dwi Souisa, Franssisca Duwiri, Fernando Kilmaskossu, J.P. Kilmaskossu, Carlos gulma, padi sawah, hama, transmigration area, Prafi Several weed species were observed in the rice fields of the transmigration area Prafi SP 2 during April 2006 by the State University of Papua.  The weeds were classified into three groups according to their morphology characteristics, and into four groups according to their habitat.  The weeds were preferred by the rice pests as host plant. Few weeds were host for the rice fields such as Echinochloa crusgalli, Echinochloa glaberescens and Pennisetum purpureum. FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/68 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 9 - 11 2746-427X 1412-1328 10.30862/jn.v7i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/68/56

oai:ojs2.jurnalnatural.unipa.ac.id:article/70 2020-07-26T06:57:22Z jn:ART driver

KEANEKARAGAMAN KUPU-KUPU DI TAMAN WISATA GUNUNG MEJA KABUPATEN MANOKWARI Panjaitan, Rawati Butterflies, Gunung Meja Park, Manokwari. This study was done to study the diversity of butterflies and its distribution in the Gunung Meja National Park.  A survey was carried out using transect count or line transect and the classification of Parson was used for habitat distribution.  A number of 96 species of butterflies was encountered from the Family Papilionidae, Pieridae, Lycaenidae dan Nyphalidae.  Three types of habitat covered the distribution of the butterflies’ species, i.e. primer forest with 41 species, secondary forest with 83 species, and garden and house yard with 49 species.  Based on the t test, there is a significant differences on the diversity of each habitat (tcount > ttable; p > 0.05). FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/70 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 12 - 19 2746-427X 1412-1328 10.30862/jn.v7i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/70/59

oai:ojs2.jurnalnatural.unipa.ac.id:article/71 2020-07-26T07:05:05Z jn:ART driver

ANALISIS VEGETASI MANGROVE DAN PEMANFAATANNYA OLEH MASYARAKAT KAMPUNG ISENEBUAI DISTRIK RUMBERPON KABUPATEN TELUK WONDAMA Auri, Yan F.A. Nunaki, Jan H. Sadsoeitoeboen, M.J. Vegetation analyses, use of mangrove, Isenebuai village. The objective of this research was to know the structure, composition, potency of mangrove tree and also exploitation of mangrove observation type in Isenebuai Village District Rumberpon Teluk Wondama. Vegetation observation was conducted using line and plot method and the interview technique flourish structure. The result of analyse vegetasi study show that 11 mangrove plant species from 5 families were found.The 11 species are Aegiceras corniculatum, Bruguiera sylindrica, Bruguiera gymnorrhiza, Rhizophora stylosa ,Rhizophora mucronata, Ceriops tagal, Heritiera littoralis, Heritiera globosa, Lumnitzera litorea, Xylocarpus granatum and  Xylocarpus moluccensis. The result also show that local people used 7 mangrove plant species from 4 families for 7 categories of use that are food-stuff, construction material, medicine, energy sources, boat supply, musical instrument and equipments of artistry and furniture. FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/71 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 20 - 26 2746-427X 1412-1328 10.30862/jn.v7i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/71/60

oai:ojs2.jurnalnatural.unipa.ac.id:article/72 2020-07-26T07:10:00Z jn:ART driver

HERPETOFAUNA DI HUTAN DATARAN RENDAH HAYA, MAMBERAMO, PAPUA Krey, Keliopas Herpetofauna, Hutan dataran rendah Haya, Mamberamo, Papua During about 19 days field work survey (7-25 February 2008) on the Haya lowland forest area, Mamberamo Papua. Eksploration is the methods used in this study. Reptiles and amphibians were collected by hand on the night and day in several type of habitat (plains, swamp, oxbowlake, stream, creeks and hills). The result showed that 48 species of herpetofauna (21 species frogs, 19 species of lizard, six species of snakes and one species of turtles and crocodile) were found. FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/72 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 27 - 32 2746-427X 1412-1328 10.30862/jn.v7i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/72/61

oai:ojs2.jurnalnatural.unipa.ac.id:article/73 2020-07-26T07:14:03Z jn:ART driver

POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) AS BIOMARKERS FOR ASSESSING BIODEGRADATION SUSCEPTIBILITIES OF CRUDE OIL SPILLED ON SOILS Langsa, Markus Heryanto Kemudahan mengalami biodegradasi senyawa-senyawa polisiklik aromatik hidrokarbon (PAHs) dalam minyak mentah yang diekstrak dari tanah pada hari ke-0 dan ke-39 telah ditentukan. Sampel tanah yang digunakan dikontaminasikan dengan minyak mentah Barrow sebanyak 5% (w/w) untuk memperoleh sampel tanah yang sama dengan kondisi lingkungannya. Tingkat biodegradasi dari minyak mentah Barrow yang diekstrak dari sampel tanah pada hari ke 0 dan hari ke 39 ditentukan berdasarkan fraksi senyawa PAH yang dianalisis menggunakan GC-MS. Persen perubahan kelimpahan (abundances) terhadap waktu dari beberapa senyawa alkilnaptalena ditentukan untuk mengetahui urutan kemudahan terdegradasinya isomer senyawa-senyawa tersebut. Ditemukan bahwa isomer-isomer 2-metilnaptalena (2-MN) lebih mudah terdegradasi oleh mikrobiologi dibandingkan dengan isomer 1-MN. Analisis GC-MS terhadap sampel minyak mentah Barrow yang asli tidak menunjukkan adanya biodegradasi, namun ketika minyak mentah tersebut ditumpahkan ke tanah dan dibiarkan selama 39 hari pengamatan, minyak mentah tersebut mengalami biodegradasi ke tingkat 2-3. FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/73 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 33 - 38 2746-427X 1412-1328 10.30862/jn.v7i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/73/62

oai:ojs2.jurnalnatural.unipa.ac.id:article/74 2020-07-26T07:18:54Z jn:ART driver

STUDI ADSORPSI ION Pb2+ MENGGUNAKAN JERAMI PADI OLAHAN ASAL MANOKWARI Morin , Jacson Victor Santi, Darma adsorption, Pb2 ions, the straw of rice The waste material of agriculture such as the straw of rice was not yet used maximal as the kind of the materials for solution of environment pollution problem. Until this moment, there was any kind of ways that was done for separated the heavy metal from waste water, include the physical, chemistry and biology methods. Study of ion Pb2+ absorption using treated rice straw was carried out to determine the absorption of heavy metal from water. The result shows absorption of heavy Cr3+ > Pb2+ > Cu2+. The absorption interaction between Pb2+ ion and treated straw shows Langmuir pattern with maximum capacity of Pb2+ ions using the straw of rice was 52,083 mg Pb2+ /g the rice straw. FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/74 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 39 - 44 2746-427X 1412-1328 10.30862/jn.v7i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/74/63

oai:ojs2.jurnalnatural.unipa.ac.id:article/75 2020-07-26T07:22:58Z jn:ART driver

SKRINING FITOKIMIA DAN UJI AKTIVITAS ANTIOKSIDAN DAN ANTITUMOR 20 TUMBUHAN OBAT ASAL KABUPATEN MANOKWARI Santoso, Bimo Budi Manokwarien medicinal plants, Flavanoid, Terpenoid, Steroid, Antioxidant activity, Phenolic content, Antitumor (P-388). Flavanoid, steroid, and terpenoid contents of 20 Manokwari medicinal plants were analyzed.  The antioxidant activity, total phenolic contents and antitumor activity of 20 Manokwari medicinal plants were also evaluated. The result shows that 83% positif to flavanoid test, 59% positif to terpenoid test and only 25% positif steroid. Antioxidant activity and total phenolic contents evaluated using Ferric Thiocianate (FTC) and Folin-Ciocalteu methods respectively. Antioxidant activity and total phenolic contents of medicinal plants were extracted by the traditional method, boiling in water and also in 80% methanol. Twenty plants evaluated in both exstracts have significantly varies of antioxidant activities and phenolic contents,  A significant and linier correlation coefficient between the antioxidant activity and the total phenolic content was found in both aqueous (R2= 0,77) and methanol (R2 = 0,85). Antitumor activity was tested using cell maurine P-388 and only 2 of medicinal plants are active to inhibit cell maurine P-388. Comparing extraction efficiency of the two methods, the methanol extracted phenolic compounds more efficiently, and antioxidant activity of the extract was higher FMIPA Universitas Papua 2008-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/75 Jurnal Natural; Vol. 7 No. 1 (2008): Jurnal Natural; 45 - 52 2746-427X 1412-1328 10.30862/jn.v7i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/75/64

oai:ojs2.jurnalnatural.unipa.ac.id:article/76 2020-08-22T22:20:04Z jn:ART driver

SYARAT PERLU SUATU OPERATOR LINEAR A SEBAGAI GENERATOR DARI FUNGSI KOSINUS COS Widjajanti , Tri Widjajanti Generator, Cosine Function, Cos This paper will discussed a linear operator A as generator of cosine function Cos by determining the necessary conditions for operator A as a generator of cosine function Cos. FMIPA Universitas Papua 2007-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/76 Jurnal Natural; Vol. 6 No. 2 (2007): Jurnal Natural; 32 - 35 2746-427X 1412-1328 10.30862/jn.v6i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/76/65

oai:ojs2.jurnalnatural.unipa.ac.id:article/77 2020-08-22T22:20:04Z jn:ART driver

CATION EXCHANGES IN CLAY LOAM FROM BOGOR, WEST JAVA Erari, Ishak S. Selectivity coefficient, cation exchange capacity, cation absorption Kapasitas tukar kation dan koefisien selektivitas merupakan parameter penting yang mempengaruhi distribusi kation antara fase larutan dan fase padatan, dan mobilitasnya di dalam tanah.  Studi tentang pertukaran kation melalui koefisien selektivitas pada tanah clay loam Bogor, Jawa barat yang ditanami sawi (Brassica juncea) telah dilakukan.  Kation-kation utama yang dipelajari adalah Ca, Mg, K dan Na.  Kompleks adsorpsi di dalam tanah tersebut didominasi   oleh Ca dan Mg.  K dan Na sangat sedikit diadsorpsi.  Koefisien selektivitas antara ion adalah KCa,Mg, KK,Ca, KNa,Ca, KK,Mg, KNa,Mg dan KNa,K  adalah 0.67, 0.57, 0.37, 0.25, 0.32, dan 1.36. Koefisien selektivitas yang diperoleh didalam studi berada pada kisaran dari hasil studi lainnya.  Didalam studi ini akan ditunjukkan penggunaan koefisien selektivitas untuk persiapan digunakan di dalam persamaan-persamaan transport kation. FMIPA Universitas Papua 2007-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/77 Jurnal Natural; Vol. 6 No. 2 (2007): Jurnal Natural; 36 - 41 2746-427X 1412-1328 10.30862/jn.v6i2 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/77/66

oai:ojs2.jurnalnatural.unipa.ac.id:article/78 2021-04-22T07:18:03Z jn:ART driver

EKSTRAK TANNIN DAUN BUAH HITAM (Haplolobus sp) SEBAGAI INHIBITOR ALAMI KOROSI BESI DALAM LARUTAN ASAM Rahman, Lulu Amalia Somar, Evelina tanin, inhibitor alami, korosi besi Ekstrak daun Haplolobus sp diperoleh dari sokhetasi daun yang telah dikeringkan dan diperkecil ukurannya, dengan pelarut aseton 80%.  Ekstrak yang diperoleh kemudian diuapkan dan ditentukan kadar taninnya dengan metode permanganometri. Pengukuran laju korosi logam besi dilakukan dengan metode pengurangan massa. Medium korosi yang digunakan adalah , , ,  dan HCl masing-masing dengan konsenttrasi 1 molar. Lama perendaman sepuluh hari. Potensi tanin daun buah hitam sebagai inhibitor alami dalam laju reaksi korosi logam besi dilakukan dengan melapisi logam besi ukuran 2 cm x 2 cm x 0,3 cm , direndam 10 hari dalam medium korosi  dan diukur laju korosinya. Cara yang sama diulangi dengan menggunakan cat antikarat. Dari hasil penelitian di peroleh  kadar tanin dalam daun Buah Hitam (Haplolobus sp) sebesar 42,16%.  Laju korosi logam besi tanpa pelapisan tanin tertinggi pada asam nitrat 13829.40 mpy dan terendah pada asam asetat 1646,36 mpy. Laju korosi logam besi yang dilapisi tanin  tertinggi pada asam  nitrat 13061.10 mpy, dan terendah pada asam asetat 1536,60 mpy.  Laju korosi logam besi yang dilapisi cat antikorosi tertinggi pada asam nitrat 7573,24 mpy dan terendah pada asam asetat 1536,60 mpy. Efisiensi penghambatan tanin  dan cat terhadap laju korosi logam besi  dalam medium asam sulfat  1 M sebesar  25,64 %  dan 41,03%, dalam medium  asam fosfat sebesar 12,50% dan 16,67%, dalam medium asam asetat sebesar 6,67 dan 6,67%, Dalam medium asam nitrat sebesar 5,56 dan 45,24%, dalam medium asam klorida 5,56 dan 5,56%.  FMIPA Universitas Papua 2020-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/78 10.30862/jn.v16i1.78 Jurnal Natural; Vol. 16 No. 1 (2020): Jurnal Natural; 61 - 65 2746-427X 1412-1328 10.30862/jn.v16i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/78/67

oai:ojs2.jurnalnatural.unipa.ac.id:article/79 2020-08-22T22:20:04Z jn:ART driver

PERANAN GELOMBANG PANJANG TERHADAP SIRKULASI ARUS GLOBAL Mamengko, Fendry Yandi Samuel Kelvin wave, Rossby wave, gyra The global surface current system forms a large scala current circulation pattern known as gyra, which occurs in the Pasific, Hindia, and Atlantic oceans.  At the nothern equator, the gyra circulation is counterclockwise, while it is anti counterclockwise at the southern equator. The trade wind crossing the Equatorial ocean causes a different slope and influences the slope form.  The response of the sea level slope can be only described by the sea level pertubation concept that the disturbance moves as pulse wave which travel alongside equatorial ocean. The effects of the Rossby and Kelvin waves propagation on the ocean circulation depend on the lattitude.  At the middle and high lattitudes, the Rossby wave experiences  the change of the surface wind stress which has more influence in the ocean near western boundaries than that in the near eastern boundaries.  At low lattitude, the Rossby and Kelvin waves propagations is located at the equatorial wave guide.  Along the equatorial wave guide, the Kelvin wave propagates easterly.  This wave is then split into 2 directions as the wave moves towards the eastern boundary. The first direction goes to the northern equator. The other moves towards the southern equator, which eventually becomes the coastal Kelvin wave. A part of the Kelvin wave is reflected to  produce the equatorial Rossby wave. Because of the equator plays important roles as wave guides, the low lattitude ocean responds more to the variability of the wind flow than that at the high lattitude. FMIPA Universitas Papua 2007-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/79 Jurnal Natural; Vol. 6 No. 2 (2007): Jurnal Natural; 42 - 46 2746-427X 1412-1328 10.30862/jn.v6i2 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/79/69

oai:ojs2.jurnalnatural.unipa.ac.id:article/80 2020-08-22T22:20:04Z jn:ART driver

EVALUATION OF THE GROUNDWATER DISCHARGE FROM THE YARRAGADEE FORMATION INTO THE BLACKWOOD RIVER, BLACKWOOD PLATEAU, WESTERN AUSTRALIA USING WATER BALANCE ANALYSIS Afkril, Baina Sungai Blackwood, Keluaran Airtanah, analisis jaring-aliran, kesetimbangan air. Area studi terletak di bagian tenggara Dataran Tinggi Blackwood, Australia Barat mencakup 71 km2. Akifer Yarragadee di daerah studi utamanya tersusun oleh batu pasir yang mengandung lapisan-lapisan batu lempung dan liat. Akifer ini merupakan akifer tak-tertekan karena muncul dipermukaan sepanjang alur Sungai Blackwood pada daerah hilir di Nannup dan merupakan sumber airtanah yang keluar ke sungai. Sungai Blackwood mengalir melintasi Dataran Tinggi Blackwood. Selama musim kering, aliran permukaan ke dalam Sungai Blackwood dapat diabaikan, namun aliran dasar dari airtanah menjadi sumber utama bagi aliran sungai. Neraca air pada daerah studi dilakukan dengan menggunakan analisa jaring-aliran dan kesetimbangan air guna mengevaluasi masukan airtanah dari akifer Yarragadee ke dalam Sungai Blackwood. Mayoritas sel-sel jaring-aliran adalah sel-sel keluaran dan kebanyakan aliran airtanah masuk ke dalam Sungai Blackwood di daerah studi. Curah hujan rata-rata tahunan area studi sekitar 6.7 x 107 m3 a-1. Sekitar 9 % dari total curah hujan rata-rata tahunan ini masuk ke dalam tanah sebagai sumber bagi air tanah dan 91 % hilang melalui proses evapotranspirasi. Volume total airtanah yang masuk ke dalam Sungai Blackwood antara stasiun Darradup dan Layman Flat yang dihitung menggunakan analisis jarring-aliran dan kesetimbangan air sekitar 8.1 GL a-1.   FMIPA Universitas Papua 2007-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/80 Jurnal Natural; Vol. 6 No. 2 (2007): Jurnal Natural; 47 - 54 2746-427X 1412-1328 10.30862/jn.v6i2 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/80/70

oai:ojs2.jurnalnatural.unipa.ac.id:article/81 2020-08-22T22:20:04Z jn:ART driver

PERTUMBUHAN LINGKARAN POHON JATI PADA DUA SISTEM KULTUR BERBEDA DI JAWA TIMUR Sinon, Iriwi Louisa S. Study dendrochronology or tree-ring dating is defined as the study of chronological sequence of annual growth rings in trees. Teak (Tectona grandis) is one of various tree species that has been identified for the use of tree-ring studies in tropical regions. Teak is found to be suitable for dendrochronology as it is long-lived and develops defined annual growth rings. In Java, teak cans growth naturally or intensively in plantation. The two silviculture conditions will give different sensitivity on climate effect. Therefore, the effect of silviculturer will on natural teak and plantation teak in Saradan, Madiun, and East Java. As a part of the study, ten core samples from natural- growth teak were measured. The samples of growth rings is spanned from 1832 – 2004. Using the COFECHA program, the correlation of the samples (r) was found to be 0.44 point, which is satisfactory to the standard used in dendrochronology. Thus, from this study it can be concluded that natural teak could still be used in dendrochronology, although the sensitivity are not as high as plantation teak. FMIPA Universitas Papua 2007-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/81 Jurnal Natural; Vol. 6 No. 2 (2007): Jurnal Natural; 55 - 63 2746-427X 1412-1328 10.30862/jn.v6i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/81/71

oai:ojs2.jurnalnatural.unipa.ac.id:article/82 2020-08-22T22:20:04Z jn:ART driver

KAJIAN POTENSI ENERGI ANGIN KABUPATEN KAIMANA PROVINSI PAPUA BARAT Bawan, Elias K. The human needs for electrics energy, especially in Kaimana regency is increasing together with city development and increasing of the resident. The electric energy supply from diesel power plant in PT. PLN (Persero) is very limited, electrical distinguishing and electrical black out are frequently happened. The potential of renewable energy like wind power is very potential to be developed as electrical energy source. Result of the study shows that the average of wind speed is 4.68 metres/second and it can be classified in third class energy. The potential of wind power in Kaimana regency is 267.7 Watt for diameter 2m and 415.60 Watt for diameter 3m. FMIPA Universitas Papua 2007-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/82 Jurnal Natural; Vol. 6 No. 2 (2007): Jurnal Natural; 69 - 73 2746-427X 1412-1328 10.30862/jn.v6i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/82/73

oai:ojs2.jurnalnatural.unipa.ac.id:article/83 2020-08-22T22:20:04Z jn:ART driver

GEOMETRI JALAN ANGKUT TAMBANG PADA KP PT. INDONESIA TIMUR RAYA NABIRE – PAPUA Supit, Jance M. Haul road geometry, wide and slope. Haul road is an important infrastructure that functions as places connector in mining area. In as much, it is necessary to make haul road geometry plan that suitable to the equipments and mining location. The study of mining haul road conducted in 200 Ha of PT. Indonesia Timur Raya mining area. The study methods are by observation on road site and calculation to decide the haul road geometry, including road wide and slope. The equipment that will be used is wheel loader XCMG ZL50G, from the calculation base on the wheel loader specifications, the minimum haul road wide is 10.5 meters for straight road and 28 meter in curve road. FMIPA Universitas Papua 2007-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/83 Jurnal Natural; Vol. 6 No. 2 (2007): Jurnal Natural; 64 - 68 2746-427X 1412-1328 10.30862/jn.v6i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/83/72

oai:ojs2.jurnalnatural.unipa.ac.id:article/85 2020-08-22T22:19:10Z jn:ART driver

MISTERI BURUNG BERACUN (Pitohui dicrous) DARI PEGUNUNGAN ARFAK, MANOKWARI. Rumbino, Amon A. Flassy, Amson D. Ihalauw, Hans S. An observation was carried out to reveal the mystery of the poison bird Pitohui dichrous from the Arfak Mountains.   According to the Arfak tribe, the poison came from plants (Amorphalus galbra and Alocasia flabellifera) and not from the beetle such as in PNG.  Therefore, a furthur study was needed to reveal the poison of Pitohui dicrous from the Arfak mountains FMIPA Universitas Papua 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/85 Jurnal Natural; Vol. 6 No. 1 (2007): Jurnal Natural; 1 - 2 2746-427X 1412-1328 10.30862/jn.v6i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/85/74

oai:ojs2.jurnalnatural.unipa.ac.id:article/86 2020-08-22T22:19:10Z jn:ART driver

ANCAMAN DAN KEPUNAHAN BURUNG MAMBRUK POLOS Goura cristata DI BAGIAN TIMUR KEPALA BURUNG (VOGELKOP) IRIAN JAYA BARAT Kilmaskossu, Agustinus mambruk polos, Goura cristata, crowned pigeon, endemic, Kepala Burung, Vogelkop, Birdshead Region, Warmiseru, Suandei The three species of “mambruk” (crowned pidgeons) are endemic to New Guinea (Irian Jaya and the Papua Nugini).  The species are listed in CITES as vulnerable. In Indonesia the species are protected by law, but in the field they are still being hunted. There fore, the threat and extinction of the species was observed on five location in the Birds Head Region of Papua.  The observation indicated thet there was only are location was the estuary of Warmiseru and Suandei Lagoon where the spesies were relativety observed. FMIPA Universitas Papua 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/86 Jurnal Natural; Vol. 6 No. 1 (2007): Jurnal Natural; 3 - 8 2746-427X 1412-1328 10.30862/jn.v6i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/86/75

oai:ojs2.jurnalnatural.unipa.ac.id:article/87 2020-08-22T22:26:09Z jn:ART driver

KOMPOSISI JENIS DAN KELIMPAHAN IKAN DI PERAIRAN TELUK DORERI, MANOKWARI Massora, Maria Fish composition, fish abundancy, Teluk Doreri, Manokwari. A study was done to search the composition and abundance of fish species in the waters of the Doreri Gulf the District of Manokwari, from September - October 2005.  The fish catchments wash about 143 specimens consist of 49 species included in 23 families.  The species of fish with a high abundance index consists of Nemipterus celebicus, Upeneus sundaicus, and Upeneus sulphureus.  Those fishes have a high economic value in the market of Manokwari. FMIPA Universitas Papua 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/87 Jurnal Natural; Vol. 6 No. 1 (2007): Jurnal Natural; 9 - 12 2746-427X 1412-1328 10.30862/jn.v6i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/87/76

oai:ojs2.jurnalnatural.unipa.ac.id:article/88 2020-08-23T20:40:28Z jn:ART driver

SURVEI OF MAMALIA IN MAMBERAMO-FOYA AREA Yohanita, Aksamina Helgen, Kris Fretes, Yance de Foya Mountains, Mamberamo, Dendrolagus pulcherrimus, Zaglossus sp. A Rapid Assessment Program survey (RAP survey) was carried out at Kwerba and the Foya mountains, Papua on November-December 2005.  The survey was intended to search for the diversity of mammalian species in the area of Kwerba village, Mamberamo River, Muara Manirim and Muara Hotije (on the lowland) and the Foya mountains (on the highland).  The survey found 38 species of mammalian, grouped into 13 family.  One spectacular founding was the recording of two unique species, the “kanguru pohon mantel emas” (Dendrolagus pulcherrimus) and the “landak Irian” (Zaglossus sp.). FMIPA Universitas Papua 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/88 Jurnal Natural; Vol. 6 No. 1 (2007): Jurnal Natural; 14 - 15 2746-427X 1412-1328 10.30862/jn.v6i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/88/77

oai:ojs2.jurnalnatural.unipa.ac.id:article/89 2020-08-23T20:57:38Z jn:ART driver

STUDI ETNOBIOLOGI PANDANUS DI PAPUA Sadsoeitoeboen , Maria Justina Kilmaskossu, Agustinus ethnobiology, Pandanus, Papua. A research was carried out to study the diversity of Pandanus in the Papua region.  The aim of the study was to find out how many species of Pandanus were all ready known by the people and used in their daily life. There are 42 species of Pandanus found in Papua. Based on the traditional utilization of the people in the Papua Tribe, Pandanus can be divided into seven group, i.e.:  (1) species which are used for edible fruit, (2) species which are used for floor of houses, (3) species which are used for roofing, (4) species which are used for sleeping mat and rain covering, (5) species used for hunting, (6) species used for medicine, and (7) species which are still unknown.  FMIPA Universitas Papua 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/89 Jurnal Natural; Vol. 6 No. 1 (2007): Jurnal Natural; 15 18 2746-427X 1412-1328 10.30862/jn.v6i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/89/78

oai:ojs2.jurnalnatural.unipa.ac.id:article/91 2020-08-23T21:02:13Z jn:ART driver

SKRINING FITOKIMIA, UJI AKTIVITAS ANTIMIKROBA DAN ANTITUMOR TUMBUHAN OBAT KABUPATEN MANOKWARI Santoso, Bimo B. Medicinal plants, Manokwari, Papua, Alkalloid, Saponin, Tannin, S. aureus, E. Coli, C. Albicans, dan Antitumor, Maurine cell P-388 Pythochemistry screening and testing of antimicrobial and antitumor activities was carried out on 31 species of medicinal plants distributed around Manokwari Regency.  All parts of the plants were collected and screened for the presence of alkaloids, saponins, and tannins; antimicrobial and antitumor activity. The number of positive tests obtained are 17 (55, 3%) for alkaloids, 6 (19, 4%) for saponins, and 26 (84, 7%) for tannins. Eleven species shown inhibition activities (antimicrobial) to Candida albicans, Staphyloccocus aureus, and Echericia colii while only seven species have antitumor activity, especially against tumor cell P-388. FMIPA Universitas Papua 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/91 Jurnal Natural; Vol. 6 No. 1 (2007): Jurnal Natural; 19 - 23 2746-427X 1412-1328 10.30862/jn.v6i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/91/79

oai:ojs2.jurnalnatural.unipa.ac.id:article/92 2020-08-23T21:06:08Z jn:ART driver

CHARACTERISATION OF DISSOLVED ORGANIC CARBON (DOC) LEACHED FROM LEAVES IN WATER Langsa, Markus Heryanto organik karbon terlarut (DOC), daun tumbuhan, aromatik Penelitian ini bertujuan untuk menentukan senyawa organik khususnya organic karbon terlarut (DOC) dari dua spesies daun tumbuhan (wandoo eucalyptus and pinus radiate, conifer) yang larut dalam air selama periode 5 bulan leaching eksperimen. Kecepatan melarutnya senyawa organic ditentukan secara kuantitatif dan kualitatif menggunakan kombinasi dari beberapa teknik diantaranya Total Organic Carbon (TOC) analyser, Ultraviolet-Visible (UV-VIS) spektrokopi dan pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). Hasil analisis DOC dan UV menunjukkan peningkatan yang tajam dari kelarutan senyawa organic di awal periode pengamatan yang selanjutnya berkurang seiring dengan waktu secara eksponensial. Jumlah relatif senyawa organic yang terlarut tergantung pada luas permukaan, aktifitas mikrobiologi dan jenis sampel tumbuhan (segar atau kering) yang digunakan. Fluktuasi profil DOC dan UV254 disebabkan oleh aktifitas mikrobiologi. Diperoleh bahwa daun kering lebih mudah terdegradasi menghasilkan senyawa organic dalam air dibandingkan dengan daun segar. Hasil pyrolysis secara umum menunjukkan bahwa senyawa hidrokarbon aromatic dan fenol (dan turunannya) lebih banyak ditemukan pada residue sampel setelah proses leaching kemungkinan karena adanya senyawa lignin atau aktifitas humifikasi mikrobiologi membuktikan bahwa senyawa-senyawa tersebut merupakan komponen penting dalam proses karakterisasi DOC. FMIPA Universitas Papua 2007-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/92 Jurnal Natural; Vol. 6 No. 1 (2007): Jurnal Natural; 24 - 31 2746-427X 1412-1328 10.30862/jn.v6i1 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/92/80

oai:ojs2.jurnalnatural.unipa.ac.id:article/93 2020-08-23T21:23:02Z jn:ART driver

Penerapan Deret Fourier Pada Sistem Pendengaran Manusia Widjajanti, Tri Natural vane voices comes to the humaneary on the Forier Series P(t), while the human earing system only accepts the wore of voices on the Fourier Series berhingga Q (t).  The different between Fories Series P(t) and Q(l) can be eliminase using. Approximation Quadrate Smallest Method.. Therefore q(t) is a result of natural vane approach. FMIPA Universitas Papua 2006-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/93 Jurnal Natural; Vol. 5 No. 2 (2006): Jurnal Natural; 9 - 12 2746-427X 1412-1328 10.30862/jn.v5i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/93/81

oai:ojs2.jurnalnatural.unipa.ac.id:article/94 2020-08-23T21:37:50Z jn:ART driver

ISOLASI DAN KARAKTERISASI ZAT WARNA Capsicum frutescens Santoso, Bimo Budi C. frutescens, pigment, -carotene, phenolic, flavonoid and capsanthin  Isolation and characterization of pigments from C. frutescens have been done. Three components (pigments)  were eluted using column chromatography namely yellow pigment, orange pigment, and red pigment. Solvents used to separate the pigments were hexane/dichloroethane, dichloroethane, dichloroethane/methanol and chloroform/dichloroethane. Isolated pigments were subjected to TLC to prove the purity and to get the Rf value of  the isolates. Then, the pure isolates were subjected to UV spectroscopy to get UV spectrum. Base on the data of polarity, pigment color, Rf value, and UV spectrum, the isolated components of C. frutescens are probably b-carotene (yellow pigment), phenolic or flavonoid compound (orange pigment), and capsanthin (red pigment).      FMIPA Universitas Papua 2002-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/94 Jurnal Natural; Vol. 1 No. 2 (2002): Jurnal Natural; 33 - 37 2746-427X 1412-1328 10.30862/jn.v1i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/94/82

oai:ojs2.jurnalnatural.unipa.ac.id:article/95 2020-08-23T21:43:22Z jn:ART driver

AKTIVITAS HARIAN NAMDUR POLOS PERIODE SEBELUM KAWIN PADA KAWASAN PEGUNUNGAN ARFAK DISTRIK SURUREY ANGGI BARAT Nunaki, Jan Hendriek pre copulation period, decoration, feeding, socialization A research has been done on the daily activities of “Namdur Polos” or Bowerbird (Amblyornis inornatus) on the pre-copulation period in the Arfak Montain Protected Areas, especially in the district of Sururey, West Anggi. The variables observed in the research are decoration, feeding, socialization and home range activities. The result shows that Namdur Polos spend 8,5% in decoration, 10,2% in feeding and 81,3% in socialization. It was concluded that the  bowerbird invests a lot of time on the social activity during the pre copulation period, shown by playing on the twigs above the “copulation hut”. FMIPA Universitas Papua 2002-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/95 Jurnal Natural; Vol. 1 No. 2 (2002): Jurnal Natural; 38 - 43 2746-427X 1412-1328 10.30862/jn.v1i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/95/83

oai:ojs2.jurnalnatural.unipa.ac.id:article/96 2020-08-23T21:47:23Z jn:ART driver

THE EFFECTS OF GROUNDWATER ABSTRACTION ON THE GNANGARA AND JANDAKOT MOUNDS, PERTH REGION WESTERN AUSTRALIA Afkril, Baina Permukaan air tanah, sumber air tanah, salinitas, dan dataran tinggi Gnangara dan Jandakot Tulisan ini merupakan hasil penelitian tentang pengaruh abstraksi permukaan air bawah tanah pada dataran tinggi Gnangara dan Jandakot di wilayah Perth, Australia Barat.  Dataran tinggi Gnangara berlokasi di bagian utara wilayah Perth sedangkan Jandakot di bagian selatan.  Kedua dataran tinggi tersebut adalah sumber utama air bawah tanah untuk mensuplai semua kebutuhan air di wilayah Perth, yang membentang sepanjang pantai Swan dan terdiri dari lapisan pasir, silt stone dengan bentangan silt yang tidak teratur serta lapisan lempung dengan ketebalan antara 10 -100 m. Abstraksi air tanah dilakukan perusahaan air minum dan beberapa pihak lain dan berbagai industri dan perusahaan komersial lainnya.  Sementara air tanah diperlukan untuk pertanian, industri dan kebutuhan komersial lainnya. Abstraksi yang berkepanjangan telah menimbulkan beberapa masalah terhadap kondisi air tanah di sekitar dataran tinggi Gnangara dan Jandakot.  Masalah pertama adalah penutupan permukaan air tanah  (water table). Selama periode 20 tahun (1974-1994) Abstraksi pada dataran tinggi Gnangara telah terjadi penurunan permukaan berkisar dari 3,0 m sampai 0,2 m. Sementara pada dataran tinggi Jandakot mengalami penurunan berkisar dari 1,5 m sampai 0,5. Karena penggunaan pompa dan tempat lainnya seperti ektensifikasi penggunaan lahan dan perubahan iklim C     (cuaca) kondisi beberapa lahan basah sekitar wilayah Perth turun secara drastis. Selama periode 1976-1985 permukaan air  pada danau Western di dataran tinggi Gnangara turun sekitar 1,0 m sedangkan permukaan Danau Estern berkurang sampai 3,0 m.  Masalah kedua yang timbul akibat kegiatan abstraksi adalah peningkatan intrusi air laut pada daerah sumber air dekat pantai atau estuary.  Salinitas air tanah pada dataran tinggi Gnangara adalah 130 mg/l TDS (Total Dissolved Solid), hampir mendekati nilai maximum yaitu 1200 mg/l TDS. FMIPA Universitas Papua 2002-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/96 Jurnal Natural; Vol. 1 No. 2 (2002): Jurnal Natural; 44 - 49 2746-427X 1412-1328 10.30862/jn.v1i2 eng https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/96/84

oai:ojs2.jurnalnatural.unipa.ac.id:article/97 2020-08-23T21:50:35Z jn:ART driver

PERBANDINGAN ANTARA ANALISIS DATA LONGITUDINAL DAN SEKAT-SILANG Bataradewa, Surianto Analysis, Longitudinal, covariance, Simulation Classical regression analysis is usually used in many analyses of longitudinal data or repeated measurement data (the response of each individual is observed repeatedly) . It assumed that there is no correlation between pairs of observations.  Wherea, multiple observations on the same object generally produce correlated outcomes.  Ignoring correlation in regression analysis can lead to incorrect conclusions.  In longitudinal data analysis is to regard the correlations between pairs of observations in this case the structure of covariance.  For this reason, inference from longitudinal data analysis can make more correct conclusions.  The objective of the study is to know the effectiveness and efficiency of  longitudinal data analysis to describe the change of response over time comparing of the cross sectional data analysis.  Simulation data was used to investigate the behavior of longitudinal data analysis.  The result of this study showed that longitudinal data analysis was powerful to increase the information of the change of the response over time succesfully.  If the correlation between two observations in same object is increasing, the cross sectional data analysis becomes inefficient to describe means response as a function of time. FMIPA Universitas Papua 2002-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/97 Jurnal Natural; Vol. 1 No. 2 (2002): Jurnal Natural; 50 - 64 2746-427X 1412-1328 10.30862/jn.v1i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/97/85

oai:ojs2.jurnalnatural.unipa.ac.id:article/98 2021-04-22T07:11:15Z jn:ART driver

PERKEMBANGAN STATISTIKA DAN PENERAPANNYA DI BERBAGAI BIDANG Notodiputro, Khairil A. Statistic is a meaning of numbers of data analyses that can be used to describe the object or phenomenon faced. For example, the growth of population in a district or area can be analysed or predicted using variabel of birth rate, mortal rate, imigration and emigration rate. The quality of human resources can be reviewed from variabel of life standart index.(mutu standard index).  On the other hands, statistica refers to a disipline of collecting, analising and as a skill of summerizing the analysis being mad. FMIPA Universitas Papua 2002-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/98 10.30862/jn.v1i2.98 Jurnal Natural; Vol. 1 No. 2 (2002): Jurnal Natural; 65 - 67 2746-427X 1412-1328 10.30862/jn.v1i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/98/86

oai:ojs2.jurnalnatural.unipa.ac.id:article/110 2021-04-22T07:10:47Z jn:ART driver

PENERAPAN HUKUM KIRCHOFF PADA RANGKAIAN EKUIVALEN UNTUK MEMPEROLEH PERSAMAAN TELEGRAF Rumlus, Maria D. L. Widjajanti, Tri Hilum, Rium Telegraph is a machine for sending and receiving messages remotely. Telegraph according to Zauderer can be modeled or expressed in mathematical language, namely the telegraph equation. Kirchoff I's Law deals with currents and Kirchoff II's Law is the basis for analyzing all electrical circuits. The purpose of this research is to apply Kirchoff's Law to obtain the telegraphic equation. The stages in research include: determining the equivalent circuits, making assumptions, applying Kirchoff's Laws I and II to the equivalent circuits, and forming telegraphic equations. The results of this study are to obtain a telegraphic equation which is a partial differential equation with general forms FMIPA Universitas Papua 2020-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/110 10.30862/jn.v16i2.110 Jurnal Natural; Vol. 16 No. 2 (2020): Jurnal Natural; 66 - 73 2746-427X 1412-1328 10.30862/jn.v16i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/110/87

oai:ojs2.jurnalnatural.unipa.ac.id:article/111 2021-04-22T07:10:05Z jn:ART driver

KAJIAN TENTANG VARIASI KONSENTRASI NaCl DENGAN KETERSEDIAAN ENERGI LISTRIK PADA SEL VOLTA Cu-Zn Winarsih, Tria Erari, Ishak Semuel Muslimin, Abdul Muis Kajian Tentang Variasi Konsentrasi NaCl Dengan Ketersediaan Energi Listrik Pada Sel Volta Cu-Zn bertujuan untuk menganalisa hubungan antara jumlah sel volta Cu-Zn terhadap besar arus listrik dan tegangan listrik, perubahan arus listrik, tegangan listrik dan daya listrik terhadap waktu, jumlah akumulasi energi pada sel volta Cu-Zn terhadap beberapa konsentrasi NaCl (0,001M; 0,01M; 0,1M; 1M; 10M). Hasil penelitian ini diketahui semakin tinggi konsentrasi NaCl maka  tegangan yang dihasilkan semakin kecil sebaliknya jika konsentrasi NaCl tinggi maka arus listrik yang dihasilkan semakin meningkat. Pada penelitian ini konsentrasi NaCl yang paling baik adalah dengan konsentrasi 1 M dibandingkan dengan konsentrasi NaCl lainnya. FMIPA Universitas Papua 2020-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/111 10.30862/jn.v16i2.111 Jurnal Natural; Vol. 16 No. 2 (2020): Jurnal Natural; 74 - 84 2746-427X 1412-1328 10.30862/jn.v16i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/111/88

oai:ojs2.jurnalnatural.unipa.ac.id:article/112 2021-04-22T07:09:31Z jn:ART driver

STUDI FITOREMEDIASI LOGAM TIMBAL (Pb) DAN KADMIUM (Cd) OLEH TANAMAN KAYAMBANG (Salvinia molesta) Morin, Jacson Victor Santi, Darma Kayambang phytoremediation, Lead (Pb) Cadmium (Cd) Study phytoremediation of lead (Pb) and cadmium (Cd) by kayambang plants (Salvinia molesta) has been studied. This study assessed the ability of plants to absorb Pb and Cd which is influenced by the addition of various metal and NPK fertilizer on the medium containing the test solution. Samples of plants were interacted with NPK fertilizer, Pb and Cd. The variations of  NPK 1 mg/L, I,5 mg/L, 2,5 mg/L and 10 mg/L and the variations of Pb (100 mg/L, 400 mg/L and 800 mg/L) and cadmium (50 mg/L, 100 mg/L and             200 mg/L). Optimum pH for growing the Kayambang plants (Salvinia molesta) is a range pH of 6-7. Observations were made every 7 days until the day of 35th, by measuring levels of Cd and Pb after the interaction of plants (roots, non-roots and growing media). The results showed that the   Pb and Cd accumulation are  higher at the root compared to non-root (stem and leaf). Effect of NPK fertilizer is very evident in the heavy plant where increasing levels of NPK fertilizer plant, the more heavy weight. The average value of FT in kayambang plants (Salvinia molesta)>1, then the plant can be used as a phytoremediator agent. The   highest  value  FT  of  Pb is 11.22 and shown on condition [NPK] 10 mg/L, [Pb] 100 mg/L at day of 21th  and for highest value FT of Cd  is  9.57 and shown  on condition [NPK] 10 mg/L, [Cd] 100 mg/L and day of 35th FMIPA Universitas Papua 2020-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/112 10.30862/jn.v16i2.112 Jurnal Natural; Vol. 16 No. 2 (2020): Jurnal Natural; 85 - 95 2746-427X 1412-1328 10.30862/jn.v16i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/112/89

oai:ojs2.jurnalnatural.unipa.ac.id:article/113 2021-04-22T07:09:10Z jn:ART driver

STUDI KUANTITAS DAN KUALITAS MATA AIR KOBARI JAYA SEBAGAI SUMBER AIR BAKU DI KABUPATEN SUPIORI PROVINSI PAPUA Morin, Jacson Victor Santi, Darma Kobari Jaya, Water quality, raw water A study on the quantity and quality of the Kobari Jaya spring in Supiori Regency has been conducted. Research on the quality test of Kobari Jaya springs has never been conducted. This study uses descriptive methods and laboratory tests and uses a comparative method of test results against the quality standard value based on PERMENKES No. 492 Tahun 2010 tentang Persyaratan Air Minum. The test results show that the average meets quality standards. The instruments used to test water samples include AAS and UVVis spectrophotometer. Several parameters such as pH, COD, BOD, DO, Phosphate, Fecal Coliform and Total Coliform exceed the predetermined quality standard values. The cause of this high parameter occurs naturally. The test results concluded that the Kobari Jaya spring is very suitable to be used as a source of raw water supply in the Kobari Jaya area in particular and the Supiori area in general FMIPA Universitas Papua 2020-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/113 10.30862/jn.v16i2.113 Jurnal Natural; Vol. 16 No. 2 (2020): Jurnal Natural; 96 - 104 2746-427X 1412-1328 10.30862/jn.v16i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/113/90

oai:ojs2.jurnalnatural.unipa.ac.id:article/114 2021-04-22T07:07:35Z jn:ART driver

UJI AKTIVITAS ANTIBAKTERI DAN SKRINING FITOKIMIA EKSTRAK HEKSANA, ETIL ASETAT DAN METANOL TUMBUHAN SURUHAN (Peperomia pellucida L. Kunth) Restianti, Restianti Santoso, Bimo Budi Pulung, Maria Ludya Antibacterial activity test and screening of phytochemical of extract hexane, ethyl acetate  and methanol have been carried out. The extraction of the P.pellucida plants was carried out by the maceration method in stages based on the polarity of the solvent. Analysis of chemical compounds done with phytochemical screening test. Based on the identification of chemical compounds by phytochemical screening, hexane and ethyl acetate extract has been detected only in the presence of flavonoid compounds with moderate categories. Methanol  extract contains high-grade alkaloids and moderate flavonoid and tannin compounds. Antibacterial test using disffusion methods suggest that ethyl acetate and methanol extract have categorically strong antibacterial activity againts the S. aureus  of 14 mm and 16 mm respectively. Hexane extract and acetate ethyl have a strong inhibition to  E. coli  of 11 mm and 12 mm respectively. Methanol extract has a weak inhibition to bacteria E. coli  and a hexane extract has a weak inhibition to bacteria S. aureus. FMIPA Universitas Papua 2020-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/114 10.30862/jn.v16i2.114 Jurnal Natural; Vol. 16 No. 2 (2020): Jurnal Natural; 105 - 111 2746-427X 1412-1328 10.30862/jn.v16i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/114/91

oai:ojs2.jurnalnatural.unipa.ac.id:article/115 2021-04-22T07:06:59Z jn:ART driver

AKTIVITAS ANTIBAKTERI DAN KOMPONEN KIMIA EKSTRAK HEKSAN, ETIL ASETAT DAN ETANOL BATANG BROTOWALI (Tinospora crispa Linn) ASAL MANOKWARI Santoso, Bimo Budi Argina, Argina Sirampun, Alfhons D. T. crispa Linn, Ekstracts Heksana, Ethyl Acetate, Ethanol, B. subtillis, E. coli and GCMS Antibacterial activity test and chemical component analysis of hexane, ethyl acetate and ethanol extract of Brotowali stem from Manokwari Regency against B. subtillis and E. coli have been carried out. The extraction of the T. crispa stems was carried out by the maceration method in stages based on the polarity of the solvent. Chemical component analysis was performed using GC-MS and phytochemical tests. Based on the identification of chemical compounds by phytochemical screening, it shows the presence of flavonoids in the hexane extract, while in the ethyl acetate and ethanol extracts there are alkaloids, flavonoids, saponins, and tannins. The results of the chemical component analysis of hexane, ethyl acetate and ethanol extracts with GC-MS showed that the hexane extract contained 55 chemical components with 11 main components, ethyl acetate extract consisted of 39 components with 8 main components and ethanol extract there were 57 components with 8 main components. The results of the antibacterial activity test using the well method showed that the hexane and ethyl acetate extracts showed better antibacterial activity than the ethanol extract against the two types of tested bacteria, namely E. coli and B. subtillis. The antibacterial activity of hexane and ethyl acetate extracts against E. coli was 11.00 and 14.00 mm, respectively and against B. subtillis were 7.00 and 7.50 mm, respectively. FMIPA Universitas Papua 2020-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/115 10.30862/jn.v16i2.115 Jurnal Natural; Vol. 16 No. 2 (2020): Jurnal Natural; 112 - 119 2746-427X 1412-1328 10.30862/jn.v16i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/115/92

oai:ojs2.jurnalnatural.unipa.ac.id:article/118 2021-04-22T07:06:25Z jn:ART driver

PENERAPAN ANALISIS REGRESI DATA PANEL PADA INDEKS PEMBANGUNAN MANUSIA DI PROVINSI PAPUA BARAT Ningsih, Desti Setya Matulessy, Esther Ria Matualage, Dariani Panel Data Regression, CEM, FEM, REM Panel Data Regression Analysis is a combination of time series data and cross section data. The purpose of this study is to determine the best model for panel data regression analysis on HDI in West Papua Province and to determine the HDI model in West Papua Province. The data used in this study are West Papua data in the 2019 Publication Figures and 2019 Publication Human Development Index data. In the process of determining the best model, estimating model parameters with 3 approaches namely CEM, FEM and REM, then testing model selection, classical assumption test, model equation checking and finally model interpretation. The results of this study indicate that the best regression model is FEM with individual effects and time effects with a good model of 91% which means that HDI in West Papua Province is explained by GRDP, RLS, JPM and UHH. The equation model is as follows: Based on the equations that have been obtained, the variables that have a significant effect on HDI in West Papua Province are RLS and UHH. FMIPA Universitas Papua 2020-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/118 10.30862/jn.v16i2.118 Jurnal Natural; Vol. 16 No. 2 (2020): Jurnal Natural; 120 - 128 2746-427X 1412-1328 10.30862/jn.v16i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/118/93

oai:ojs2.jurnalnatural.unipa.ac.id:article/120 2021-04-22T07:05:53Z jn:ART driver

KARAKTERISASI ABU KAYU MERBAU (Intsia, spp.): PENGARUH TEMPERATUR DAN LAMA KALSINASI Santi, Darma Morin, Jacson Victor Merbau wood ash, Temperature, Duration, Calcination Characterization of merbau wood ash (Intsia, spp.) due to the influence of temperature and time of calcination has been studied. The variations in calcination temperature were 500 ᴼC (as M500) and 600 ᴼC (as M600), while the variations in the duration of calcination were 1, 2, and 3 hours, noted as M1, M2, and M3, respectively. Characterization was carried out using X-ray diffraction (XRD) and spectroscopic analysis using FT-IR. XRD results identified the presence of CaCO3 species (rhombohedral structure) and K2Si4O9 species with a hexagonal structure on M500. The M600 species identified Si (cubic structure), SiO2 (cubic structure), K2Si4O9 (hexagonal structure), and CaCO3 (rhombohedral structure). In general, the calcination temperature increases the crystallinity of several compounds contained in merbau wood ash. The length of time calcination reduces the absorption peak due to the decomposition and adsorption reactions of the presence of water molecules bound to the ash material of merbau wood (Intsia, spp). FMIPA Universitas Papua 2019-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/120 10.30862/jn.v15i1.120 Jurnal Natural; Vol. 15 No. 1 (2019): Jurnal Natural; 30 - 38 2746-427X 1412-1328 10.30862/jn.v15i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/120/94

oai:ojs2.jurnalnatural.unipa.ac.id:article/122 2021-04-22T07:05:13Z jn:ART driver

PERANCANGAN DAN KARAKTERISASI ANTENA MONOPOLE SEBAGAI PEMANCAR DAN PENERIMA GELOMBANG WIFI FREKUENSI 2,4 GHZ Anou, Kezia Noviani Desain dan karakterisasi antena monopole sebagai pemancar dan penerima gelombang wifi dengan frekuensi 2,4 GHz pada pipa besi telah dilakukan. Metode pengambilan data pada penelitian ini dilakukan secara langsung. Jenis antena yang didisain adalah 2 antena monopole 1/4λ yang dibuat dari kawat tembaga dengan ketebalan wire 2.25 mm dan keliling wire 0.004 mm. Antena monopole 1/4λ ini memiliki panjang gelombang sebesar 12,5 cm dan panjang wire 3,125 cm. Karakterisasi parameter antena monopole menggunakan Network Analyzer. Pengujian antena monopole menunjukkan nilai impedansinya adalah Z = 41,4 + j10,8 Ω. Nilai return loss sebesar -10.35 dB pada frekuensi 348 MHz dan lebar bandwidth yang dihasilkan sebesar 3,48 GHz-1,58 GHz = 1,9 GHz dengan frekuensi pusat di 2,4 GHz. Nilai VSWR adalah sebesar 1,358 dB. Nilai VSWR umumnya memiliki nilai 1 ≤ VSWR ≤ 2 dimana dalam keadaan ideal, VSWR bernilai 1. Artinya, impedansi saluran transmisi (port) dengan antena memiliki nilai yang sama sehingga sinyal dapat sepenuhnya ditransmisikan melalui saluran (pipa besi) menuju antena penerima. FMIPA Universitas Papua 2019-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/122 10.30862/jn.v15i1.122 Jurnal Natural; Vol. 15 No. 1 (2019): Jurnal Natural; 39 - 45 2746-427X 1412-1328 10.30862/jn.v15i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/122/95

oai:ojs2.jurnalnatural.unipa.ac.id:article/124 2022-05-23T05:37:02Z jn:ART driver

oai:ojs2.jurnalnatural.unipa.ac.id:article/125 2023-04-13T06:36:38Z jn:ART driver

PENGARUH PEMANFAATAN LIMBAH CAIR PABRIK KELAPA SAWIT TERHADAP SIFAT KIMIA DAN FISIKA TANAH PADA LAHAN PERKEBUNAN KELAPA SAWIT MILIK PT.PMP KABUPATEN MAYBRAT Sari, Aprilia Regita Langsa, Markus Heryanto Sirampun, Alfhons Daniel POME, oil palm, soil physical properties, soil chemical properties, nutrients POME, oil palm, soil physical properties, soil chemical properties, nutrients Palm oil mill effluent (POME) is the most abundant waste produced from palm oil mills. POME waste products from palm oil mills can pollute the surrounding environment. The main objective of this study was to determine the use of POME on soil fertility and increase the growth of oil palm plants and minimize negative impacts on the environment. The results of the research obtained are a combination of primary data (results of analysis carried out in oil palm plantations owned by PT PMP, Maybrat Regency before the POME application) and secondary data (results of analysis carried out at Angsana Estate oil palm plantations, South Kalimantan after POME  application). The results obtained indicate that generally after the application of POME to the land will increase the value of the bulk density and decrease the value of soil porosity and soil permeability. There was a decrease in the percentage of soil porosity in the application area (LA, 28.75% and Flatbed, 23.47%) compared to without application (LK, 36.83%) in the soil depth up to 30 cm. On soils with a deeper depth (30-60 cm) the percent of land subsidence is almost the same as at a depth of 30 cm. Conversely, the addition of POME in the land application (LA) had an impact on the increase in bulk density (1.81 g / cm3) and soil permeability (4.16 cm / hour) compared without POME (LK) (1.48 g / cm3 and 4.08 cm / hour) for soil samples to a depth of 30 cm. The POME application increases the availability of organic matter (C-organic and nitrogen) in the surface soils. The highest P-available values ​​are seen at a depth of 0-20 cm and 20-40 cm in the flatbed. Also, POME  on oil palm land tends to increase nutrient content in oil palm leaves compared to control land (without POME). FMIPA Universitas Papua 2019-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/125 10.30862/jn.v15i2.125 Jurnal Natural; Vol. 15 No. 2 (2019): Jurnal Natural; 46 - 59 2746-427X 1412-1328 10.30862/jn.v15i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/125/96

oai:ojs2.jurnalnatural.unipa.ac.id:article/127 2023-04-27T20:07:50Z jn:ART driver

ANALISIS KADAR BIOETANOL HASIL FERMENTASI DARI NIRA NIPAH (Nypa fruticans wurmb) ASAL PAPUA Runtuboi, Sefnat Sopater Pulung, Maria Ludya Somar, Evelina Nypa fruticans wurmb, Bioetanol, Fermentasi, Destilasi, Kromatografi Gas This study aims to analyze the ethanol content in fermented palm juice.This research includes the preparation of raw materials, fermentation, distillation and distillation products analyzed by gas chromatography method. Fermentation is carried out for 2, 5, 7 days, the highest level of bioethanol produced is then selected for distillation. Levels the highest fermentation process is on the 5th day with a level of 18%. Got results the final distillation is 117 mL with a level of 94% of the initial volume of 4.2 L fermentation based on measurements using an alcoholmeter while the analysis by gas chromatography yielded 93.9% levels. The density of bioethanol is 0.8232 gr / mL. The results of the retention time measurement show the sample has a retention time which is almost the same as standard ethanol, namely 3,761 standard ethanol samples 3,764. From retention time data can be concluded that the sample is ethanol. Ethanol content in sample based on analysis by gas chromatography is 93.9% Penelitian ini bertujuan untuk menganalisis kadar etanol dalam nira nipah hasil fermentasi. Penelitian ini meliputi penyiapan bahan baku, fermentasi, destilasi dan hasil destilasi dianalisis dengan metode kromatografi gas. Fermentasi dilakukan selama 2, 5, 7 hari, bioethanol yang dihasilkan dipilih kadar tertinggi untuk selanjutnya didestilasi. Kadar tertinggi proses fermentasi yaitu pada hari ke-5 dengan kadar 18%. Didapat hasil destilasi akhir yaitu 117 mL dengan kadar 94% dari volume awal fermentasi 4,2 L berdasarkan pengukuran menggunakan alcoholmeter sedangkan analisis dengan kromatografi gas menghasilkan kadar 93,9%. Densitas bioetanol yaitu 0,8232 gr/mL. Hasil pengukuran waktu retensi menunjukan sampel memiliki waktu retensi yang hampir sama dengan etanol standar yakni sampel 3,761 etanol standar 3,764. Dari data waktu retensi dapat disimpulkan bahwa sampel adalah etanol.  Kadar etanol dalam sampel berdasarkan analisis dengan kromatografi gas yaitu 93,9%. FMIPA Universitas Papua 2019-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/127 10.30862/jn.v15i2.127 Jurnal Natural; Vol. 15 No. 2 (2019): Jurnal Natural; 60 - 66 2746-427X 1412-1328 10.30862/jn.v15i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/127/97

oai:ojs2.jurnalnatural.unipa.ac.id:article/128 2021-04-22T07:03:23Z jn:ART driver

EVALUASI HIDROLOGI DAERAH ALIRAN SUNGAI WOSI DALAM MENGHADAPI CURAH HUJAN EKSTRIM Pamuji, Khristian Enggar Hardianti, Hardianti Evaluasi hidrologi, DAS Wosi, Kapasitas tampung sungai, Debit puncak aliran permukaan, curah hujan ekstrim Daerah Aliran Sungai Wosi merupakan DAS yang berada di Distrik Manokwari Barat, Kabupaten Manokwari, Papua Barat. Dalam dekade terakhir, DAS Wosi telah menjadi sumber bencana bagi sebagian penduduk yang tinggal di sekitar atau di daerah hilir sungai Wosi. Ketika curah hujan tinggi, Sungai Wosi tidak dapat menampung debit aliran air, sehingga bencana banjir tidak dapat dihindarkan. Penelitian ini bertujuan untuk mengetahui karakteristik DAS Wosi, menentukan kapasitas tampung maksimum sungai dan mengevaluasi peranan atau fungsi hidrologis DAS Wosi dalam mencegah banjir. Daerah penelitian berada di Daerah Aliran Sungai Wosi Kabupaten Manokwari. Penelitian ini dimulai dengan pengumpulan data serta analisis data primer dan data sekunder. Data yang dikumpulkan berupa data curah hujan Manowkari, dimensi sungai dan data spatial tutupan lahan di DAS Wosi. Data-data tersebut kemudian digunakan untuk mengetahui karakteristik hidrologi sungai, debit puncak aliran dan kapasitas tapung maksimum sungai. Hasil yang diperoleh menunjukan bahwa pada beberapa titik pengamatan, kapasitas tampung maksimum sungai lebih kecil dari debit puncak aliran permukaan. Debit puncak ini didominasi oleh aliran permukaan yang berasal dari daerah yang tertutup semak belukar/alang-alang. Meskipun tutupannya hanya 41 % dari total luasan DAS, namum semak belukar/alang-alang telah menyumbang 48 % dari total debit air yang masuk kedalam Sungai Wosi. Hasil evaluasi menunjukan bahwa fungsi hidrologis DAS Wosi sebagai penyangga kejadian puncak hujan dan pengendali banjir saat curah hujan lebat atau ekstrim kurang berfungsi dengan baik. FMIPA Universitas Papua 2019-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/128 10.30862/jn.v15i2.128 Jurnal Natural; Vol. 15 No. 2 (2019): Jurnal Natural; 67 - 77 2746-427X 1412-1328 10.30862/jn.v15i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/128/98

oai:ojs2.jurnalnatural.unipa.ac.id:article/138 2021-04-22T06:52:16Z jn:ART driver

PERBANDINGAN ANTARA MODEL AUTOREGRESSIVE INTEGRATED MOVING AVERAGE (ARIMA) DAN MODEL FUNGSI TRANSFER PADA PERAMALAN CURAH HUJAN DI KABUPATEN MANOKWARI Matulessy, Esther Ria Forecasting; ARIMA; Multi Input Transfer Function; Rainfall This study discusses the comparison of forecasting time series data between the Autoregressive Integrated Moving Average (ARIMA) method and the multi input transfer function model. ARIMA method is one of the most frequently used methods for forecasting time series data. Meanwhile, the transfer function model is a combination of the characteristics of multiple regression analysis with the characteristics of the ARIMA time series. Meanwhile, the multi input transfer function model is a transfer function model that has input variables of more than two time series. The application of these two methods is carried out on rainfall data from January 2012 to December 2017 in Manokwari Regency, West Papua Province. The input variables used are temperature, humidity, solar radiation, air pressure, and wind speed variables. The results showed the best ARIMA model was ARIMA (1,0,0) (2,0,0) 12 with an AIC value of 910.07, while for the best multi input transfer function model was ARIMA (1,1,0) AIC value of 898.24. Between the two methods, the best model used to forecast rainfall in Manokwari Regency, West Papua Province is the multi-input transfer function model (1,1,0). FMIPA Universitas Papua 2019-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/138 10.30862/jn.v15i2.138 Jurnal Natural; Vol. 15 No. 2 (2019): Jurnal Natural; 78 - 87 2746-427X 1412-1328 10.30862/jn.v15i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/138/99

oai:ojs2.jurnalnatural.unipa.ac.id:article/140 2021-04-22T06:14:59Z jn:ART driver

MATRIKS BAKU UNTUK TRANSFORMASI LINIER PADA RUANG VEKTOR DIMENSI TIGA Friantika, Khasnah Aris Monim, Harina O. L. Hilum, Rium standard matrix, linear transformation, three dimensional vector space The linear transformation is a function relating the vector   ke . If , then the transformation is called a linear operator. Several examples of linear operators have been introduced since SMA such as reflexive, rotation, compression and expansion and shear. Apart from being introduced in SMA, these linear operators were also introduced to the linear algebra course. Linear transformations studied at the university level include linear transformation in finite dimension vector spaces . The discussion includes how to determine the standard matrix for reflexive linear transformations, rotation, compression and expansion and given shear. Through the column vectors of reflexive, rotation, compression and expansion and shear, a standard matrix of 2x2 size is formed for the corresponding linear transformation. however, in this study, the authors studied linear transformations in dimensioned vector spaces . The results of this study are if known  is a vector space with finite and  the standard matrix for reflexivity, rotation, expansion, compression and shear is obtained. Each of these linear transformations is performed on x-axis, y-axis and z-axis on  to get column vectors. The column vectors as a result of the linear transformation at form the standard matrix for the corresponding linear transformation in the vector space. The standard matrix for linear transformations in the vector space  is obtained by determining reflexivity, rotation, expansion, compression and shear. The process of obtaining a standard matrix for linear transformation is carried out by rewriting the standard basis, determining the column vectors, and rearranging them as the standard matrix for each linear transformation in the vector space FMIPA Universitas Papua 2019-10-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/140 10.30862/jn.v15i2.140 Jurnal Natural; Vol. 15 No. 2 (2019): Jurnal Natural; 88 - 93 2746-427X 1412-1328 10.30862/jn.v15i2 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/140/101

oai:ojs2.jurnalnatural.unipa.ac.id:article/141 2023-04-12T02:53:48Z jn:ART driver

PEMBUATAN SISTEM VAKUM OTOMATIS GAS H2S BERBAHAN TiO2-Ni/Al2O3 TERKONEKSI ARDUINO UNO PADA LABORATORIUM KIMIA Morin, Jacson Victor Santi, Darma TiO2 doped Ni, sensor H2S, Dip coating, Arduino uno Research has been carried out on the H2S gas sensor made of TiO2-Ni/Al2O3 which is connected to an automatic vacuum. The results showed that the optimum conditions for the variation of Ni doping metal levels were 20 mg / gram TiO2. The semiconductor material synthesis method used the sol gel method with TTiP precursor which was made at pH 7. Coating of the sol gel solution on the Al2O3 substrate used a dip coater with a decrease speed of 1 cm / minute and was carried out 7 times of immersion. The characterization of synthetic results used UVVis, XRD, FTIR and SEM-EDX. The band gap value resulting from Ni doping is 2.75 eV from 3.2 eV, XRD identification shows that TiO2 is anataseic and detected at 2θ. FTIR data also supports XRD results with detection of TiO2, Ni-O, NiTiO3, Ti-O-Ni, and Ti-O-Ti groups. TiO2-Ni / Al2O3 sensor test results are very sensitive and selective to H2S gas. Arduino Uno sensor and microcontroller connectivity can change the unit of resistance into a unit of ppm concentration and can drive the exhaust (vacuum) automatically in the laboratory room or chemical storage space when there is H2S. FMIPA Universitas Papua 2021-04-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/141 10.30862/jn.v17i1.141 Jurnal Natural; Vol. 17 No. 1 (2021): Jurnal Natural; 1 - 17 2746-427X 1412-1328 10.30862/jn.v17i1 ind https://jurnalnatural.unipa.ac.id/index.php/jn/article/view/141/102 494b643b71c3a0ed9f3316acdbbeff9d