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INDONESIA
Jurnal Penelitian Sains
Published by Universitas Sriwijaya
ISSN : 14107058     EISSN : 25977059     DOI : 10.26554
Core Subject : Science, Education,
Chemistry Mathematics Physics
Jurnal Penelitian Sains (JPS) MIPA UNSRI merupakan wahana komunikasi ilmiah di bidang sains serta lintas ilmu yang terkait; diterbitkan sejak 1 Oktober 1996 oleh UP2M FMIPA Universitas Sriwijaya. Jurnal ini berisikan tulisan atau karangan ilmiah dalam berbagai bidang tersebut yang diangkat dari hasil penelitian, survei, atau telaah pustaka, yang belum pernah dipublikasikan dalam terbitan lain.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 21, No 2 (2019)" : 6 Documents clear
Laju Pertumbuhan Dan Tingkat Kelangsungan Hidup Jenis Karang Acropora Sp Dengan Metode Penempelan Fragmen Yang Berbeda Ary Yancer Jimi Erika; Ramses Ramses; Lani Puspita
Jurnal Penelitian Sains Vol 21, No 2 (2019)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.508 KB) | DOI: 10.56064/jps.v21i2.534

Abstract

This study aims to determine the growth rate and survival of Acropora sp corals by attaching plastic and cement clamp fragments. As many as 64 Aropora sp fragments as high as 9-9.5 cm to be tested on two methods of attaching fragments. Acropora sp coral growth rate uses a method of sticking plastic clamps higher than using the cement attachment method. The survival rate of coral acropora sp using the cement attachment method is better than the method of attaching plastic clamps, which is 100% for the method of attachment with cement and 78% for the method of attaching plastic clamps.
Penzonasian Mangrove Dan Keterkaitannya Dengan Salinitas Di Muara Sungai Upang Kabupaten Banyuasin Sumatera Selatan Hendro H Sinaga; Heron Surbakti; Gusti Diansyah
Jurnal Penelitian Sains Vol 21, No 2 (2019)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (637.048 KB) | DOI: 10.56064/jps.v21i2.531

Abstract

The mangrove is a plant native to tropical areas in the coastal area of Indonesia. This research aims to analyze the distribution of salinity in Upang River Estuary, to determine the density, relative frequency and dominance of mangrove in Upang Estuaries River Banyuasin Regency South Sumatera, to determine the zonation of mangrove in Upang River Estuary Banyuasin Regency South Sumatera, to analyse the relation between salinity with mangrove zonation in Upang River Estuary anyuasin Regency South Sumatera. This Research was carried out in October 2015. The metodhs used for analysis of mangrove were density type, Relative Density (RD), the Relative Frequency (RF), Relative Dominance (RD), and important values’s index and the analysis of physics chemistry factors using the ODV. Salinity values at high and low tide conditions ranged from 12,5 – 25 PSU and 15 – 20 PSU respeclively. In the phases of the tree kind of Avicennia marina had the highest density of 1567 ind/ha with 300% of INP. In the phase of sampling type Avicennia marina and Sonneratia alba had the same highest density of 800 ind/ha with 300% of INP for both. In the Phase for seed type Sonneratia alba had the highest density of 23,333 ind/ha with 200% of INP. Zoning formed in Upang River Estuary was Avicennia marina, Sonneratia alba, Nypa fruticans and Avicennia marina.
Efek Teratogenik Ekstrak Etanol Daun Sirsak (Annona muricata L) Terhadap Fetus Tikus Putih Galur Wistar Erjon Erjon; Jouliyano Dwiputri; Sari Meisyayati
Jurnal Penelitian Sains Vol 21, No 2 (2019)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.493 KB) | DOI: 10.56064/jps.v21i2.532

Abstract

Ethanolic extract of leaves of “sirsak” (Annona muricata L) has been proven to be effective in convulsant, inflammatory, hiperuresemia, hyperglycemia and hypertension to patients. The aim of this study was to evaluated teratogenicity effect of ethanolic extract of leaves of sirsak (Annona muricata L) leaves in Wistar rats. Ethanolic extract of leaves of “sirsak” were administered orally at dose level of 98 mg/kgbw, 196 mg/kg bw , 392 mg/kgbw on day eighth to eighteenth of gestation. At day 20th of gestation, laparoctomy was performed to retrieve the fetuses. Evaluation was done towards the fetus skeletal, organ and fetal weight. The at all doses did not cause any fetus resorption, did not cause malformation in organ and skeleton but cause fetus growth failure. Ethanolic extract of leaves of sirsak at doses of 98, 196, and 392 mg/kgbw in rats did not have the teratogenic effect.
Dinamika Komunitas Fitoplankton Pada Siang dan Malam Hari di Perairan Desa Sungsang Muara Sungai Musi, Sumatera Selatan Fery Pratama; Rozirwan Rozirwan; Riris Aryawati
Jurnal Penelitian Sains Vol 21, No 2 (2019)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (722.479 KB) | DOI: 10.56064/jps.v21i2.535

Abstract

The Sungsang waters are often used by the surrounding community for water transportation, fishing and wash. The correlation of phytoplankton community with the physical-chemical parameters that can be used to determine the condition of the waters. The purpose of this research was to discuss the types of phytoplankton, analyze the community index and correlation between physical - chemical parameters in Sungsang waters. The research was had been done on November 2018, taking of samples and measurements was performed at 3 station points by tides at the day and night in 3 days. Taking of sampels that is phytoplankton and nutrient water samples, measurements of physical - chemical parameters that is DO, temperature, salinity, pH and current velocity, the correlation of phytoplankton community's with physical-chemical parameters are carried out by principal component analysis (PCA). The phytoplankton composition at night was found 39 genera from 4 classes, while during the day there were 41 genera from 5 classes. Percentage of phytoplankton composition class that is Bacillariophyceae (98.77%), Cyanophyceae (0.87%), Dinophyceae (0.29%), Chlorophyceae (0.055%) and Dictyochophyceae (0.014%). The abundance of phytoplankton is range between 298 - 2,533 cells/l with the diversity index of the dominant is medium category, the uniformity index of the dominant is high category and the dominance index of the dominant is low category. Based on the results of PCA for the correlation between phytoplankton communities with physical-chemical parameters during at day with the identifiers is uniformity index, DO, dominance index, phosphate, salinity and current, the identifiers at night is current, pH, nitrate, temperature, phosphate, DO, diversity index and uniformity index, for combined data day and night the identifiers is diversity index, phosphate, uniformity index, abundance, temperature, pH, dominance index and salinity.
Pengendalian Persediaan Obat Di Pt. Pratapa Nirmala Palembang dengan Metode Heuristik Silver Meal (HSM) Yuni Kartika; Evi Yuliza Yuliza; Fitri Maya Puspita
Jurnal Penelitian Sains Vol 21, No 2 (2019)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.536 KB) | DOI: 10.56064/jps.v21i2.533

Abstract

Drug demand data is a top priority for a company in the process of ordering. In meeting consumer needs a plan is needed in the process of ordering drugs so that there is no vacancy and also the distribution process does not stop. This study  determine the results of drug inventory control orders and find out the total cost of ordering optimal drugs by applying the Heuristic Silver Meal (HSM) method. The total cost of ordering a drug before applying the HSM method is Rp. 29,016,000, while after applying the HSM method it produces a total booking fee of Rp. 20,800,632. Thus the results of the calculation of the method HSM are known to produce optimal ordering costs. This means that the company saves on ordering costs of Rp. 8,215,368, so the HSM method can be used to calculate the cost of ordering drugs at PT. Pratapa Nirmala Palembang.
Sintesis dan Karakterisasi Senyawa Kompleks Zn(Ii) Sulfametoksazol dan Schiff Base dari Sulfametoksazol dan Vanillin Serta Uji Aktivitas Antibakteri Salmonella thypi Nilda Lely; Shohibah Yulisa; Lasmaryna Sirumapea
Jurnal Penelitian Sains Vol 21, No 2 (2019)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.456 KB) | DOI: 10.56064/jps.v21i2.530

Abstract

Telah dilakukan sintesis senyawa kompleks dari logam Zn(II) dengan sulfametoksazol dan Schiff base dari sulfametoksazol dan vanillin. Senyawa-senyawa yang telah terbentuk dikarakterisasi menggunakan spektrofotometer FT IR dan diuji aktivitas antibakterinya terhadap Salmonella thypi ATCC 19943 menggunakan metode difusi agar. Hasil karakterisasi senyawa kompleks sulfametoksazol-Zn(II) didapatkan pergeseran bilangan gelombang pada gugus sulfon dari 1149,57 cm-1 menjadi 1141,86 cm-1 dibanding sulfametoksazol. Hasil karakterisasi senyawa Schiff base didapatkan puncak pada bilangan gelombang 1581,63 cm-1 yang mengindikasikan bahwa gugus azomethine (-CH=N) telah terbentuk. Pada karakterisasi senyawa kompleks Schiff base-Zn(II) didapatkan puncak pada bilangan gelombang 1589,34 cm-1 yang mengindikasikan bahwa senyawa kompleks telah terbentuk. Pada pengujian aktivitas antibakteri digunakan pembanding sulfametoksazol dengan konsentrasi 10000 ppm. Pada konsentrasi 2500 ppm, 5000 ppm, 10000 ppm, dan 15000 ppm, aktivitas antibakteri senyawa kompleks Schiff base-Zn(II) bisa melebihi aktivitas antibakteri sulfametoksazol dan senyawa hasil sintesis lainnya. Pada konsentrasi yang sama, aktivitas antibakteri senyawa Schiff base bisa melebihi aktivitas antibakteri dari senyawa kompleks sulfametoksazol-Zn(II) dan sulfametoksazol. Pada konsentrasi yang sama pula, aktivitas antibakteri senyawa kompleks sulfametoksazol-Zn(II) bisa melebihi aktivitas antibakteri dari sulfametoksazol.

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