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Jurnal Penelitian Sains

jps
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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.

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Articles 7 Documents

Search results for , issue "Vol 23, No 3 (2021)" : 7 Documents clear

Perbedaan Jumlah Koloni Jamur Trichophyton rubrum pada Media Sabouraud Dextrose Agar dan Modifikasi Glukosa 3gr Natalia Natalia
Jurnal Penelitian Sains Vol 23, No 3 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Jamur merupakan salah satu penyebab penyakit infeksi terutama di negara-negara tropis. Jamur yang dapat menyebabkan infeksi salah satunya adalah Trichophyton rubrum. Pemeriksaan laboratorium untuk kultur jamur Trichophyton rubrum ini menggunakan media SDA (Sabaroud Dextrose Agar). Penambahan glukosa dimaksudkan meningkatkan tingkat kesuburan pada media SDA (Sabaroud Dextrose Agar) yang akan membantu proses pertumbuhan koloni jamur Trichophyton rubrum menjadi lebih banyak. Tujuan dari penelitian ini untuk mengetahui perbedaan jumlah koloni jamur Trichophyton rubrum pada media Sabouraud Dextrose Agar (SDA) dan modifikasi dengan glukosa 3 gr. Metode: metode penelitian yang digunakan adalah true experimen. Sampel yang digunakan strain biakan Trichophyton rubrum yang disetarakan dengan standar 0,5 Mac Farland dengan pengenceran 102. Data hasil penelitian diperoleh dengan menghitung jumlah koloni jamur Trichophyton rubrum pada hari ke 6. Hasil: Rata rata jumlah koloni jamur T.rubrum pada media SDA sebanyak 142, sedangkan media modifikasi glukosa 3 gr sebanyak 204. Nilai p=0.000 dengan taraf signifikansi 2 arah (α=0.05) maka p<α. Simpulan: Maka terdapat perbedaan yang bermakna antara jumlah koloni jamur T.rubrum pada media SDA dan media modifikasi dengan glukosa 3 gr, dan media modifikasi dengan glukosa 3 gr dapat menjadi media alternatif untuk memperbanyak pertumbuhan jamur.

Analisis Kejadian Hujan Lebat dan Banjir Kabupaten Pati Menggunakan Metode Cloud Convective Overlays dan Red Green Blue Convective Storms pada Satelit Himawari 8 Radhithe Fadly Ramdani
Jurnal Penelitian Sains Vol 23, No 3 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Cuaca merupakan fenomena yang sering kita lihat sehari-hari, seperti hujan, panas dan lain sebagainya. Akan tetapi cuaca dapat berdampak buruk bagi kelangsungan makhluk hidup terutama manusia, contohnya cuaca ekstrim berupa hujan lebat, angin kencang, tanah longsor, banjir, dan lain lain. Pada penelitian ini akan dibahas mengenai penyebab terjadinya fenomena cuaca ekstrim yang terjadi di wilayah Kabupaten Pati. Fenomena ini adalah hujan lebat dan banjir. Berdasarkan situs berita online wilayah Pati mengalami hujan lebat dan banjir pada tanggal 19 Februari 2020. Dengan menggunakan data satelit Himawari-8, peneliti menganalisa tentang kejadian tersebut menggunakan analisa menggunakan suhu puncak awan, peta streamline, metode RGB menggunakan Band 8 (WV3 6.2 µm) – Band 10 [WV3 7.3 µm], Band 7 (I4 3.9 µm) – Band 13 (IR 10.4 µm), dan Band 5 (NIR 1.6 µm) – Band 3 (VIS 0.6 µm) dan metode CCO (Convective Cloud Overlays) menggunakan 2 algoritma yaitu algoritma pertama merupakan metode split windows dengan threshold (S3=BTD[IR1-IR2]<2], algoritma kedua merupakan metode dual channel difference dengan threshold (BTD=[IR1-IR3]<3). Perangkat lunak yang digunakan adalah SATAID dan GrADS. Hasil analisa penelitian menunjukkan bahwa wilayah Kabupaten Pati tertutupi oleh awan-awan konvektif..Kata kunci: banjir, hujan lebat, metode CCO, metode RGB, satelit Himawari-8

Isolasi dan aktivitas antibakteri jamur endofit pada mangrove Avicennia marina dari Pulau Payung Kabupaten Banyuasin Sumatera Selatan Delima A. G. Situmorang; Rozirwan Rozirwan; Muhammad Hendri
Jurnal Penelitian Sains Vol 23, No 3 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Isolation of endophytic fungus is the growth of endophytic fungus on new media to obtain the type of endophytic fungus. One of the mangrove plants containing endophytic fungi is Avicennia marina mangroves taken from Payung Island of South Sumatera. This study aims to isolate and identify the type of endophytic fungus, measure the growth rate of isolate diameter and know the antibacterial activity. Methods of this study include identification, growth rate measurement of isolate diameter for seven days and endophytic fungal activity test as antibacterial using Paper Disc method. The results of this study obtained five isolates with three types of endophytic fungi from each root part, stems and leaves of Aspergillus ochraceus, Aspergillus flavus and Aspergillus niger. The lag phase of these three fungi occurs from day of planting until the first day for one day, the exponential phase from the first day until the sixth day for five days, and the stationary phase on the sixth day to the seventh for one day for Aspergillus ochraceus and Aspergillus niger fungi while for Aspergillus flavus fungi yet occur stationary phase. The highest antibacterial activity with inhibit zone was shown by A. flavus fungal isolates ranging from 13,79 ± 1,26 mm for S. aureus and 11,86 ± 1,48 mm for E. coli bacteria, whereas the lowest inhibition zone was indicated by fungal isolates A. ochraceus 8,01 ± 0,45 mm for S. aureus bacteria and 9,34 ± 1,25 mm for E. coli bacteria.

Toxicity test of gastropoda extracts of Littorina scabra and Terebralia sulcata from Payung Island, Musi River Estuary, South Sumatra Dimas Arie Pratama; Rozirwan Rozirwan; Muhammad Hendri
Jurnal Penelitian Sains Vol 23, No 3 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Gastropoda is one of the potentially most common biotas found in mangrove ecosystems and as bioactive compounds that have not been widely studied. Gastropod species Littorina scabra and Terebralia sulcata were found in the Payung Island. This research aimed to determine and compare the potential toxicity between two species of gastropod extract of L. scabra and T. sulcata. This research was conducted in February 2017. The research procedure included sampling and sample preparation, extraction, and toxicity test that Brine Shrimp Lethality Test (BSLT) method. Toxicity test showed LC50 415.58 μg/mL L. scabra while LC50 value from T. sulcata equal to 565.52 μg/mL. From the comparison, the toxicity value of L. scabra gastropod was higher than the T. sulcata type.

Actinomycetes yang diisolat dari mangrove Rhizophora apiculata di perairan Tanjung Api-api, Sumatera Selatan Tika Gustiana; Rozirwan Rozirwan; T. Zia Ulqodry
Jurnal Penelitian Sains Vol 23, No 3 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Actinomycetes is one type of endophytic bacteria that lives in the mangrove plant tissues. Bioactive compound which form Actinomycetes can be use as potential medicine in medic industry and pharmacy sector. This study aimed to isolate and identify the kinds of the Actinomycetes bacteria at mangrove Rhizophora apiculata from Tanjung Api-api waters, South Sumatera. This research method included measurement of environmental parameters, mangrove sampling, isolation, characterization and identification of bacteria. The result of research found two isolates of Actinomycetes in the lower roots (AB T4) and leaf (Leaf T2). The isolates code AB T4 had characteristics of moderate colony size, circular shape, entire edge, convex elevation, white colony color, had hyphae, rod-shaped cells, non motile, aerobic, gram positive, negative for oxidase, indole and gelatin, positive for catalase, citrate, urea, ornithine, aesculin, galactose, glucose and trehalose, OF oxidative and fermentative. While the isolates code Leaf T2 had characteristics of moderate colony size, irregular shape, undulate edge, raised elevation, creamy white colony color, had hyphae, gram positive, rod-shaped cells, non motile, aerobic, positive for catalase, ornithine, aesculin, celobiosa, glucose, lactose, melibiosa, sorbitol and trehalose, negative for oxidase, citrate, urea, gelatin and indole, OF oxidative and fermentative. Both isolates AB T4 and Leaf T2 were identified as Nocardia genus in lower root samples (AB T4) and Actinomadura genus in leaf samples (Leaf T2).

Pengaruh Waktu Penyimpanan Inokulum Escherichia coli dan Staphilococcus aureus Pada Suhu Dingin Terhadap Jumlah Sel Bakteri di Laboratorium Mikrobiologi Rosmania Rosmania; Yuniar Yuniar
Jurnal Penelitian Sains Vol 23, No 3 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Bakteri yang sudah ditumbuhkan dalam media seringkali disimpan dalam suhu dingin non beku (refrigerator) setelah perlakuan atau sebelum perlakuan. Ini dikarenakan keterbatasan waktu dalam menyelesaikan penelitian dan efisiensi baik dari segi media dan waktu dalam pembuatan inokulum untuk percobaan lanjutan sehingga penelitian tentang ini perlu dilakukan. Penelitian ini dilaksanakan pada bulan April 2020 sampai dengan bulan Oktober 2020, di Laboratorium Mikrobiologi, Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas sriwijaya, Indralaya. Metode penelitian yang digunakan terdiri dari beberapa tahapan, yaitu Pembuatan Media Pemurnian, Peremajaan¸Suspensi dan Pengujian Bakteri, Sterilisasi, Pemurnian Bakteri Uji, Peremajaan Bakteri Uji, Pembuatan suspensi bakteri uji, Pengukuran jumlah bakteri secara metode hitungan cawan. waktu penyimpanan inoculum Escherichia coli dan Staphylococcus aureus sebelum disimpan (H0) dan setelah disimpan dalam lemari pendingin/ refrigerator (5 oC - 10 oC) dengan variasi penyimpanan selama 1, 2, 3, 4, 5. 6 dan 7 hari memberikan pengaruh yang nyata terhadap nilai jumlah sel (Standard Plate Count) dan nilai absorban.Kata Kunci: Bakteri; Media; Inokulum; Hitungan Cawan

Penentuan tipe sedimen dasar perairan Muara Sungai Banyuasin berdasarkan nilai hambur balik akustik Ellis N Ningsih; Beta S Barus; Riris Aryawati; Sahrul Ramadhan; Freddy Supriyadi
Jurnal Penelitian Sains Vol 23, No 3 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Bottom sediments have an essential role, among others, as a habitat for living things, determining waves, turbidity of the waters, and as information on marine development. Determination of the type of bottom waters can be done using the acoustic method. The use of sound waves in the acoustic method can detect objects in the water column using an echosounder instrument. This research aims to analyze the value of acoustic backscatter in finding the type of sediment at the bottom of the water. This research was carried out in October 2018 - January 2019 in the waters of the Banyuasin River Estuary. The results showed that the sediment base corresponds to the acoustic backscatter value, namely clayey sand with an SS value of -16.23 dB. Clay with SS values ranging from -24.09 dB to -21.29 dB. Muddy clay with SS values ranging from -17.88 dB to -15.54 dB, and sandy clay with an SS value of -16.89 dB. Based on multiple linear regression analysis, the three types of sediment fractions strongly influence the formation of acoustic backscatter by 65.3% or 0.81.

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Hadi

Contact Email
jpsmipaunsri@mipa.unsri.ac.id

Phone
+6282374210479

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jpsmipaunsri@mipa.unsri.ac.id

Editorial Address
Fakultas Matematika dan Ilmu Pengetahuan Alam Jl. Palembang-Prabumulih Km. 32 Inderalaya Ogan Ilir

Location
Kab. ogan ilir,

Sumatera selatan

INDONESIA

Abstract

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Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Hadi

Contact Email jpsmipaunsri@mipa.unsri.ac.id

Phone +6282374210479

Journal Mail Official jpsmipaunsri@mipa.unsri.ac.id

Editorial Address Fakultas Matematika dan Ilmu Pengetahuan Alam Jl. Palembang-Prabumulih Km. 32 Inderalaya Ogan Ilir

Location Kab. ogan ilir, Sumatera selatan INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Hadi

Contact Email
jpsmipaunsri@mipa.unsri.ac.id

Phone
+6282374210479

Journal Mail Official
jpsmipaunsri@mipa.unsri.ac.id

Editorial Address
Fakultas Matematika dan Ilmu Pengetahuan Alam Jl. Palembang-Prabumulih Km. 32 Inderalaya Ogan Ilir

Location
Kab. ogan ilir,

Sumatera selatan

INDONESIA