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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 14 Documents
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Search results for , issue "Vol 13, No 3 (2010)" : 14 Documents clear
Biomass Nutrient Profiles of Marine Microalgae Dunaliella salina Moh. Muhaemin Moh. Muhaemin; Richardus F. Kaswadji
Jurnal Penelitian Sains Vol 13, No 3 (2010)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.599 KB) | DOI: 10.56064/jps.v13i3.142

Abstract

The unconventional micro algal sources for the production of feed, food, food additive, pharmaceutical, and fine chemical is growing in important. Researches in the field are expanding worldwide. Nutritional composition of marine micro algae Dunaliella salina data included proximate composition, nitrate, RNA, and pigments were analyzed under various conditions in semi cultured medium. On average, nutritional composition of biomass was highly influenced by external irradiance and residence time in bioreactor. The biomass collected for short residence times was richer in protein.
Perubahan Topologi Spasial di dalam Fisika Akhmad Aminuddin Bama
Jurnal Penelitian Sains Vol 13, No 3 (2010)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.588 KB) | DOI: 10.56064/jps.v13i3.133

Abstract

Dalam makalah ini dibahas mengenai dapat-tidaknya ruang-waktu fisis mengalami perubahan topologi spasial. Ruang topologis atau manifol yang tidak kompak selalu dapat dijadikan sebagai ruang-waktu fisis. Sementara manifol kompak dapat dijadikan sebagai ruang-waktu fisis hanya bila karakteristik Euler-nya sama dengan nol. Untuk ruang-waktu kompak tanpa batasan M berdimensi genap ((d + 1) genap) dengan _I dan _F adalah kobordan bakruang, perubahan topologi spasial dapat terjadi apabila karakteristik Euler bagi M sama dengan nol, _(M) = 0, sedangkan untuk (d + 1) gasal, perubahan topologi dapat terjadi jika dipenuhi kaidah seleksi Reinhardt-Sorkin, yaitu _(_I) = _(_F). Meskipun dapat dilakukan pengeliminasian kaedah Reinhardt-Sorkin untuk dapat terjadinya perubahan topologi bagi ruang-waktu berdimensi gasal, namun pengeliminasian itu masih menyisakan beberapa batasan yang cukup tegas. Batasan itu muncul terkait dengan kehadiran kurva bak-waktu tertutup (sepanjang ruang-waktu kompak) untuk setiap perubahan topologi yang terjadi. 
Pemeriksaan Karakteristik Simplisia Alga Padina australis Hauck (Dictyotaceae) Fitrya Fitrya
Jurnal Penelitian Sains Vol 13, No 3 (2010)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (807.201 KB) | DOI: 10.56064/jps.v13i3.138

Abstract

Telah dilakukan pemeriksaan karakteristik terhadap serbuk talus Padina australis Hauck. Hasil pemeriksaan mikroskopis menunjukkan talus Padina tersusun dari epidermis dan sel parenkim. Pemeriksaan karakteristik simplisia menunjukkan bahwa kadar abu total sebuk talus Padina adalah 26,5%; kadar abu larut dalam air 10,5%, kadar abu tidak larut dalam asam 3,6%, kadar sari larut dalam air 12,4%, kadar sari larut dalam etanol 8,2%, kadar air 6,4% dan susut pengeringan 8,1%. Pemeriksaan logam menunjukkan bahwa talus Padina mengandung logam kalsium, kalium, natrium, magnesium dan besi dan kadar logam paling tinggi adalah kalsium yaitu 6,15%.
Phosphorus and Ammonium Ions Removal by Using The Microalgae Dunaliella salina Wike Ayu Eka Putri; Moh. Muhaemin Moh. Muhaemin
Jurnal Penelitian Sains Vol 13, No 3 (2010)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.422 KB) | DOI: 10.56064/jps.v13i3.143

Abstract

Biological treatment for industrial effluent was performed in laboratory scale experiment by using marine microalgae Dunaliella salina. The dark colored wastewater, containing high level of organic matter and low pH which may prevent microalgae growth. The research showed that within 5 days of incubation in the wastewater, D. salina grew from 3×106 to 1.5×107 cell/mL. D. salina reduced approximately phosphorus (29%), and ammonium ionic (68%). The research demonstrated the possibility of using marine microalgae for bioremediation treatment of industrial wastewater, specifically.

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