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Abdul Muis Muslimin
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Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Papua Jalan Gunung Salju Amban, Manokwari 98314
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Jurnal Natural
Published by Universitas Papua
ISSN : 14121328     EISSN : 2746427X     DOI : -
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Mathematics Physics
Jurnal Natural merupakan jurnal ilmu-ilmu matematika dan pengetahuan alam (basic science) untuk bidang: matematika, kimia, statistika, biologi, dan fisika termasuk ilmu terapan yang terkait seperti bioteknologi, kimia pangan, keanekaragaman hayati, dan lain-lain.
Arjuna Subject : Umum - Umum
Articles 160 Documents
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PERANCANGAN ALAT UKUR INTENSITAS CAHAYA BERBASIS ARDUINO LEONARDO MENGGUNAKAN SENSOR LDR (Light Dependent Resistor) Simson Manik; Abdul Muis Muslimin; Aries A. Subgan
Jurnal Natural Vol. 16 No. 1 (2020): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jn.v16i1.46

Abstract

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%.
Pemetaan Potensi Bahaya Gempa Bumi di Provinsi Papua Barat Menggunakan Metode Percepatan Tanah Maksimum dan Point Source Analysis Arif Faisol
Jurnal Natural Vol. 16 No. 1 (2020): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jn.v16i1.47

Abstract

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.
AIR LIMBAH LAUNDRY : KARAKTERISTIK DAN PENGARUHNYA TERHADAP KUALITAS AIR Yuliana Yuliana; Markus Heryanto Langsa; Alfhons D. Sirampun
Jurnal Natural Vol. 16 No. 1 (2020): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jn.v16i1.48

Abstract

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.
MODEL DAN PELUANG TERJADINYA HUJAN BERDASARKAN KELEMBABAN MENGGUNAKAN REGRESI LOGISTIK BINER DI KABUPATEN MANOKWARI Inayatul Farach Ardianty; Indah Ratih Anggriyani
Jurnal Natural Vol. 16 No. 1 (2020): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jn.v16i1.49

Abstract

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.
JENIS KUSKUS (Phalangeridae) DI PULAU RATEWI NABIRE PAPUA Freddy Pattiselanno; Deny A. Iyai
Jurnal Natural Vol. 8 No. 1 (2009): Jurnal Natural
Publisher : FMIPA Universitas Papua

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Abstract

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)
HABITAT IKAN PELANGI ARFAK (Melanotaenia arfakensis ALLEN) BERDASARKAN TAHAP PERKEMBANGAN DI SUNGAI NIMBAI DAN SUNGAI AIMASI, MANOKWARI Emmanuel Manangkalangi; M. F. Rahardjo; Djadja S. Sjafei
Jurnal Natural Vol. 8 No. 1 (2009): Jurnal Natural
Publisher : FMIPA Universitas Papua

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Abstract

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.
FRAGMENTASI mtDNA MAMBRUK CRISTATA DAN VICTORIA OLEH BEBERAPA ENZIM RESTRIKSI: Fragmentation of mtDNA of Goura cristata and victoria by some Restriction Enzymes Agust Kilmaskossu
Jurnal Natural Vol. 8 No. 1 (2009): Jurnal Natural
Publisher : FMIPA Universitas Papua

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Abstract

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.
KESTABILAN HABITAT LAMUN DITINJAU DARI KOMPOSISI DAN KEPADATAN JENIS Paskalina Th. Lefaan
Jurnal Natural Vol. 8 No. 1 (2009): Jurnal Natural
Publisher : FMIPA Universitas Papua

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Abstract

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.
AREA DISTRIBUSI DAN VARIASI MORFOLOGI ULAR PUTIH (Micropechis ikaheka) DI PAPUA Keliopas Krey
Jurnal Natural Vol. 8 No. 1 (2009): Jurnal Natural
Publisher : FMIPA Universitas Papua

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Abstract

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.
PEMANFAATAN TUMBUHAN SEBAGAI OBAT TRADISIONAL OLEH MASYARAKAT SUKU MAYBRAT DI KAMPUNG RENIS DISTRIK MARE KABUPATEN SORONG SELATAN Frengki L.K. Hara; Jan H. Nunaki; M.J. Sadsoeitoeboen
Jurnal Natural Vol. 8 No. 1 (2009): Jurnal Natural
Publisher : FMIPA Universitas Papua

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Abstract

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).

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