Browsing A - Mathematics and Natural Sciences by Author "Sitorus, Saibun"
Now showing items 1-20 of 41
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Analisis kadar logam Pb, Cd, Cu, As pada air, sedimen dan bivalvia di Pesisir Teluk Balikpapan
Sitorus, Saibun; Ilang, Yerwanto; Nugroho, Rudy Agung (Dinamika Lingkungan Indonesia, 2020-07)Abstract : Analysis of Heavy Metal Content of Pb, Cd, Cu, As in Water, Sediments and Bivalves in Coastal Waters of Balikpapan Bay. The study aims to analyze the levels of heavy metals (Pb, Cd, Cu, As) in water, sediment ... -
ANALISIS KADAR MAGNESIUM (Mg) TOTAL DAN MANGAN (Mn) PADA PENAMBAHAN EM4 TERHADAP PUPUK KOMPOS (SAMPAH KULIT KEDELAI-KACANG PANJANG)
Simamora, Darius Ryan Partogi; Sitorus, Saibun; Tarigan, Daniel (2022-06-18) -
Analisis kemampuan kiambang (Salvinia molesta) untuk menurunkan konsentrasi ion logam Cu (II) pada media tumbuh air
Yuliani, Dewi Eka; Sitorus, Saibun; Wirawan, Teguh (Jurnal Kimia Mulawarman, 2013)ABSTRACT This research was purposed to know about the water lettuce (Salvinia molesta) absorption ability for metal Cu (II) ion and the influence of plant sum variation and its contact time. The simulation is done by ... -
Identifikasi Batuan PAF, NAF dan UNCERTAIN dengan Menggunakan Metode NTAPP Pada Area PT. Trubaindo Coal Mining, Melak-Kalimantan Timur
Irviansyah, Alfian; Sitorus, Saibun; Panggabean, Aman Sentosa (Indonesian Journal of Chemical Research, 2020-01)ABSTRACT : The research about identification of PAF, NAF and uncertain rock using NTAPP method in the PT. Trubaindo Coal Mining has been done. This research was conducted as an effort to control the potential for the ... -
Identifikasi Komponen Senyawa Kimia Tandan Kosong Kelapa Sawit Kromatografi Gas-Spektrometer Massa (GC-MS)
Sampepana, Eldha; Sitorus, Saibun (Jurnal Riset Teknologi Industri, 2014-12)Waste oil palm empty fruit bunches of oil palm industry is waste that potential continues to increase, but the handling is not maximized and pollute the environment. This research aims to identify the components of ... -
IMPLEMENTASI BAKU MUTU AIR LIMBAH BERBASIS DAYA TAMPUNG BEBAN PENCEMARAN BADAN AIR PENERIMA PADA KEGIATAN PERTAMBANGAN BATUBARA
Sitorus, Saibun; Simangunsong, Binsar (Jurnal Kimia Mulawarman, 2013-05)ABSTRACTThis research is based on the fact that many rivers in East Kalimantan are complained to be polluted by coal mining activities even though many rules to protect surface waters are in place and obeyed. To explain ... -
INHIBISI XANTIN OKSIDASE OLEH FRAKSI ETIL ASETAT DARI DAUN JARUM TUJUH BILAH (Pereskia bleo (Kunth) DC) SEBAGAI ANTIHIPERURISEMIA
Sari, Prinka Susmita; Sitorus, Saibun; Gunawan, Rahmat (Jurnal Atomik, 2018-08)ABSTRACT“Jarum Tujuh Bilah” leaves (Pereskia bleo(Kunth) DC) are a medicinal plant that often used in traditional medicine to reduce uric acid levels. This plant contains secondary metabolites which have the ... -
Investigations on The Mechanism of Artificial Photosynthesis of Ca-Pc-PDI and Dendrimer Molecule by DFT Calculations
Gunawan, Rahmat; Hammamiyah, Ulinnuha; Fadillah, Fahmi; Saleh, Chairul; Sitorus, Saibun (Jurnal Ilmu Dasar, 2018-07)ABSTRACTArtificial photosynthesis modelling of Ca-Pc-PDI complexCaPhthalocyaninePerylenediimide),and dendrimer molecule using Density of Functional Theory (DFT) Method has been studied toshowed the energy ... -
ISOLASI AMILASE DARI KECAMBAH BIJI NANGKA (Artocarpus heterophyllus Lam)
Fahmi, Ismi; Astuti, Winni; Sitorus, Saibun (2017)ABSTRACTThis researchaims to isolate the crude extract amylase of sprouted seeds jackfruit (Artocarpus heterophyllus Lam) and determine the specific activity. Determination of total protein concentration and ... -
Isolasi dan Identifikasi Steroid dari Ekstrak N-Heksana Daun Afrika (Vernonia amygdalina Del.)
Mashunah, Evi; Sitorus, Saibun (KOVALEN : Jurnal Riset Kimia, 2020-04-09)ABSTRACT : Isolation and identification of steroids from the n-hexane fraction of Vernonia amygdalina Del. was carried out. Separation and purification were performed using flash chromatographic and gravity chromatography. ... -
ISOLASI DAN PENENTUAN KADAR MINYAK ATSIRI DARI DAUN DAN KULIT KAYU MANIS (CINNAMOMUM BURMANNII BL.) DENGAN METODE KROMATOGRAFI GAS
Novari, Firna; Sukaton, Edi; Sitorus, Saibun (Jurnal Kehutanan Unmul, 2007-04)Abstract. The objectives of this research were to isolate and determine of essential oil content from leaf and bark of cinnamon and to separate eugenol from cinnamomum oil using any variant of NaOH concentrations ... -
KARAKTERISTIK CAMPURAN BATUBARA DAN VARIASI ARANG SERBUK GERGAJI DENGAN PENAMBAHAN ARANG TEMPURUNG KELAPA DALAM PEMBUATAN BRIKET
Hosniah, Siti; Sitorus, Saibun (Jurnal Atomik, 2016)ABSTRACT Penelitian ini bertujuan untuk mempelajari sifat-sifat briket dari campuran antara batubara dengan arang kayu Ulin, Bangkirai dan tempurung kelapa, yaitu dalam rangka mencari sumber energi alternatif. Pembuatan ... -
Kunyit Putih (Curcuma zedoaria [Berg.] Roscoe) sebagai Pengawet dan Antioksidan Pangan
Saputra, Suroto Hadi; Sitorus, Saibun (Jurnal Riset Teknologi Industri, 2014-12)ABSTRACT Community health awareness, especially regarding the selectionof healthyfoods. Healthy food is pretty containing nutrients, it does not contain harmful substances, andfresh. This scientific review using literature ... -
PEMANFAATAN ABU BATUBARA SEBAGAI ZEOLIT YANG TERDEALUMINASI DALAM MENGADSORPSI FENOL
Pata, Agustinus; Sitorus, Saibun; Gunawan, Rahmat (Jurnal Kimia Mulawarman, 2014-11)ABSTRACTA research on the adsorption of phenol with zeolite adsorbent is formed from coal ash by hydrothermal process with the fusion method. In addition, the improvement in the ability of zeolite adsorbtion ... -
PEMANFAATAN ABU SABUT KELAPA SEBAGAI KATALIS BASA DALAM PEMBUATAN BIODIESEL DARI MINYAK BIJI JARAK PAGAR (JATROPHA CURCAS. L)
Sitorus, Saibun (Jurnal Riset Teknologi Industri, 2015-06)ABSTRAK Penelitian tentang pemanfaatan abu sabut kelapa sebagai sumber katalis basa pada aplikasi reaksi transesterifikasi minyak biji jarak pagar (Jatropha curcas. L) telah dilakukan. Karakterisasi kadar basa dalam ... -
Pemanfaatan Arang Aktif Dari Batubara Kotor (Dirty Coal) Sebagai Adsorben Ion Logam Mn(II) dan Ag(I)
Sitorus, Saibun; Pijer, Meliani (Jurnal Pendidikan Kimia, 2015-08)Abstract. The research has done about use of activated carbon as an adsorben of dirty coal in metal ions Mn(II) and Ag(I). This research was intended to find the effects of pH value, contact period and to determine the ... -
PEMANFAATAN BIJI WANYI (Mangifera caesia Jack.) DALAM PEMBUATAN ETANOL SECARA HIDROLISIS ENZIMATIS DAN FERMENTASI MENGGUNAKAN Saccharomyces cerevisiae
Arissah, Nur; Sitorus, Saibun; Gunawan, Rahmat (Jurnal Atomik, 2020-08)Abstract : The utilization of wanyi seeds (Mangifera caesiaJack.) in making ethanol by enzymatic hydrolysis and fermentation using Saccharomyces cerevisiaehas been carried out. The method used is the hydrolysis ... -
PEMANFAATAN BIOMASSA BATANG PISANG (Musa paradisiaca) YANG TERIMMOBILKAN PADA ABU BATU BARA SEBAGAI PENGADSORPSI ION LOGAM BESI (Fe)
Sitorus, Saibun (Jurnal Pendidikan Kimia, 2014)Abstract The using of banana stem biomass (Musa paradisiaca) was immobility at ash coal as an adsorb in metal ions iron (Fe) have been researhed. The adsoption capacity determine of metal ions iron (Fe) used Isoterm ... -
PEMANFAATAN FRAKSI ETANOL DAUN JARUM TUJUH BILAH (Pereskia bleo (Kunth) D.C) SEBAGAI INHIBITOR XANTIN OKSIDASE DALAM PEMBENTUKAN ASAM URAT
Sarwawan, Ade Putri; Sitorus, Saibun; Gunawan, Rahmat (Jurnal Atomik, 2019-03)ABSTRACT : This research was conducted to determine the content of secondary metabolite contained in the extract and ethanol fraction of “Jarum tujuh bilah” leaves (Pereskia bleo(Kunth) DC)and and inhibition of ... -
Pemanfaatan limbah padat palm kernel cake (PKC) sebagai sumber karbon aktif dengan proses kimia
Haspiadi, Haspiadi; Sitorus, Saibun (Jurnal Riset Teknologi Industri, 2016-04)ABSTRACT Solid waste of Palm kernel cake (PKC) is a by product of oil extraction from palm nut pose a serious environmental problem in some factories of Palm Kernel Oil (PKO. Thererfore the research about utilization ...