A - Mathematics and Natural Sciences: Recent submissions
Now showing items 421-440 of 514
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SYNTHESIS OF CHITOSAN-MAGNETITE NANOPARTICLES CROSS-LINKED TRIPOLYPHOSPHATE AS ANTIBACTERIAL Salmonella typhi AND Staphylococcus aureus
(Jurnal Atomik, 2021)Magnetite is widely used in various fields of separation, biochemistry, medical and environment. Modification of nanoparticle magnetite binding with chitosan is recommended for many biomedical applications, especially ... -
PREPARATION OF MAGNETITE-FULVIC ACID (Fe3O4-FA) FROM PEAT SOIL AND APPLICATION TO ADSORB RHODAMINE-B
(Jurnal Kimia Mulawarman, 2021)This study, Fe3O4 adsorbent coated with fulvic acid (Fe3O4-AF) was prepared from peat soil and applied to adsorb rhodamine B dye. The optimum pH conditions of rhodamine-B adsorption on Fe3O4-AF. Fe3O4-AF adsorbent ... -
Antidiabetic Activity of leaf extract from three types of Mangrove Originating from Sambera Coastal Region Indonesia
(Research Journal of Pharmacy and tehnology, 2019-05)This study designed to determine the antidiabetic profile ethanol extracts of leaf extract from three types of mangroves; Avicennia sp., Rhizopora sp, and Sonneratia sp. Extraction process used maceration with ethanol ... -
ISOLATION OF SECONDARY METABOLITE COMPOUNDS AND ANTIBACTERIAL ACTIVITIES TESTS FROM HEXANE EXTRACT OF STEM BARK MELOCHIA UMBELLATA (HOUTT) STAPF VAR. DEGRABRATA K
(Asian J Pharm Clin Res, 2018-05-05)Objectives: This research aims to determine the content of secondary metabolite compounds and antibacterial activity of stem bark extract Melochia umbellata (Houtt) Stapf var. degrabrata. Methods: M. umbellata stem bark ... -
ANALISIS KANDUNGAN LOGAM BERAT Pb DAN Cd DI MUARA SUNGAI MANGGAR BALIKPAPAN
(ECOTROPHIC, 2018)Human activities around the estuary of the Manggar river in Balikpapan produce waste disposal and cause heavy metal contamination such as lead (Pb) and cadmium (Cd) in water bodies.The contaminant can endanger the life of ... -
UJI FITOKIMIA DAN UJI ANTIBAKTERI DARI AKAR MANGROVE Rhizopora apiculata TERHADAP BAKTERI Escherichia coli DAN Staphylococcus aureus
(JKPK (JURNAL KIMIA DAN PENDIDIKAN KIMIA), 2017-12-31)Indonesia memiliki berbagai jenis mangrove namun pemanfaatan mangrove sebagai produk obat dan makanan kesehatan belum banyak dimanfaatkan karena masih terbatasnya informasi dan penelitian mengenai kandungan senyawa bioaktif ... -
POTENSI ANTIJAMUR EKSTRAK METANOL DAUN MANGROVE RHIZOPORA MUCRONATA TERHADAP JAMUR CANDIDA ALBICANS DAN ASPERGILLUS NIGER
(Jurnal Kimia Mulawarman, 2017-11)andida Albicans and Aspergillus Niger are some of the infectious fungi. Empirically bark, flower, root and mangrove leaves Rhizophora mucronata can be a hepatitis drug. This study aims to determine the antifungal potential ... -
Potensi Senyawa Metabolit Sekunder Dari Kulit Batang Melochia umbellata (Houtt) Stapf var. degrabrata paliasa) Sebagai Anti-Tuberkulosis
(Jurnal Sains dan Kesehatan, 2015)Melochia umbellata (Houtt) Stapf var. Degrabrata merupakan jenis tumbuhan yang banyak ditemukan di hutan tropis Indonesia. Di daerah Sulawesi selatan tumbuhan ini dikenal dengan nama paliasa dan sejak lama digunakan ... -
Toksisitas Ekstrak Etanol Mangrove Sonneratia alba terhadap Larva Nyamuk Aedes aegypti
(Jurnal Sains dan Kesehatan, 2020)Mangrove Sonneratia alba adalah salah satu spesies mangrove yang dapat ditemukan di pantai Kalimantan Timur. Mangrove Sonneratia alba mengandung metabolit sekunder yang berpotensi sebagai antioksidan, antibakteri, dan ... -
Antioxidant Activity of Secondary Metabolite Compounds from Lichen Teloschistes flavicans
(Biointerface Research in Applied Chemistry, 2021-03-01)In the last decade, lichen has become a research interest related to exploring secondary metabolites compounds. Lichen is a unique organism and contains specific chemical compounds rarely found in other natural sources; ... -
A Logit Model for Bivariate Binary Responses
(MDPI, 2021-02-16)This article provides a bivariate binary logit model and statistical inference procedures for parameter estimation and hypothesis testing. The bivariate binary logit (BBL) model is an extension of the binary logit model ... -
Geographically Weighted Multivariate Logistic Regression Model and Its Application
(HINDAWI, 2020-08-01)This study investigates the geographically weighted multivariate logistic regression (GWMLR) model, parameter estimation, and hypothesis testing procedures. The GWMLR model is an extension to the multivariate logistic ... -
Pemodelan Matematika Penyebaran COVID19 Tipe SV1V2EIR
(Politeknik Negeri Batam, 2021-12-29)Pemodelan matematika dapat diterapkan diberbagai bidang ilmu seperti bidang sains, sosial, ekonomi, keteknikan maupun bidang ilmu lainnya. Penerapan pemodelan matematika antara lain untuk mendeskripsikan fenomena penyebaran ... -
Population Behavior in the Mathematical Model of the Spread of COVID19 Type SEIRS
(Politeknik Aceh Selatan, 2021-10-18)Mathematical modeling utilized to simplify real phenomena that occur in everyday life. Mathematical modeling is popular to modeling the case of the spread of disease in an area, the growth of living things, and social ... -
Desain Alat Identifikasi Tipe Oli Berdasarkan Nilai Intensitas Cahaya Menggunakan Sensor Light Dependent Resistor Berbasis Mikrokontroler
(Jurnal Fisika Unand, 2021-10-29)Oils have different compatibility within a heavy equipment and affect machine performance. Therefore, an oil type identification tool has been developed in this study using a light dependent resistor (LDR) sensor. The oil ... -
Plant-extract-mediated biosynthesis of silver nanoparticles using Eleutherine americana bulb extract and its characterization
(UNS, 2021-11-17)Plant-extract-mediated biosynthesis of silver nanoparticles using Eleutherine americana bulb extract and its characterization. Nusantara Bioscience 13: 247-254. The plant-based biosynthesis of nanoparticles has gained ... -
Arsenic Speciation in Soils in the Vicinity of a Copper Smelter in Pirdop
(Journal Bulgarian Cemistry and Industr, 2007-12-30) -
Pemanfaatan Cangkang Biji Aren (Arenga pinnata) untuk Arang Aktif Sebagai Adrorben terhadap Penurunan Fenol
(Jurusan Kimia Universitas Mulawarman, 2013-11-16)The Research about utilization of Palm Kernel Shell (Arenga pinnata) for Activet Carbon as Adsorbent for Phenol Rediction has been done. The research own to know then influence of pH, contact time and the optimum of ... -
Perbandingan Metode Pengadukan, Sonifikasi dan Gelombang-Mikro dalam Ekstraksi Spesies Arsenik dalam Tanaman
(Jurusan Kimia Universitas Mulawarman, 2008-11-16) -
Perbandingan Metode Pengocokan, Aliran dan Pencelupan pada Adsorpsi Besi (III) oleh Kitin dari Cangkang Kepiting (Scylla serata)
(Jurnal Kimia Mulawarman, 2007-11-16)Comparitation of Shake Methods, Flow Methods, and Dye Methods on Adsorption of iron (III) by Chitin from Crabshell (Scylla serrata) has been done. Parameters on the research each mass of kitin and duration of Interaction, ...