A - Mathematics and Natural Sciences: Recent submissions
Now showing items 261-280 of 512
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Uji Fitokimia dan Antibakteri dari Ekstrak Metanol Kulit Batang Melochia umbellata (Houtt) Stapf var Degrabrata (PALIASA) terhadap Bakteri Patogen
(Jurnal Kimia Sains, 2011-09)A Study phytochemical and antibacterial essay of the methanol extracts of steam bark M.umbellate (Houtt) Stapf var. degrabrata (Paliasa). The results of this study showed that the methanol extract from the bark of M. ... -
STUDI MOLEKUL KITOSAN SEBAGAI MEMBRAN PENGHANTAR PROTON (H+ ) DENGAN METODE AB INITIO
(Jurnal Kimia Mulawarman, 2019-11)Abstract : The aim of this research to know chitosan compound able to replace nafion performance as a conductor of proton (H+). The assessment process and computational chemistry calculations done using ab initio methods. ... -
TOXICITY AND ANTIMICROBIAL ACTIVITY FROM EXTRACT AND OLEANAN DERIVATIVE COMPOUNDS OF THE BARK MELOCHIA UMBELLATE (HOUTT) STAPF VAR. DEGRABRATA
(International Journal of Pharma and Bio Sciences, 2014-07)Oleanan derivative compound namely 3-acetyl-12-oleanen-28-oic acid, has been isolated from n-hexane fraction of the bark M. umbellate (Houtt) Stapf var. degrabrata The molecular structure was determined by IR spectroscopy, ... -
The Effectiveness of Using Learning Media 3D Pop-Up Chemistry Assisted by Project Based Learning (PjBL) Learning Model Against Student Learning Outcomes on the Subject of Colloid Systems in SMA Negeri 12 Samarinda
(IOSR Journal of Research & Method in Education, 2021-04)Background: Learning media is one important aspect that can affect the quality of student learning at school. Lack of use of media in the learning process can affect student motivation and learning outcomes in schools, ... -
Toksisitas Ekstrak Etanol Mangrove Sonneratia alba terhadap Larva Nyamuk Aedes aegypt
(Jurnal Sains dan Kesehatan, 2020-01)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 ... -
BIOACTIVITY TEST OF COMPOUND (Hexa-Tetra Contana) FROM SPONGE (Callyspongia pseudoreticulata) AS ANTIBACTERIAL OF WITHERED DISEASE ON POTATO PLANT (Ralstonia solanacearum)
(International Journal of Pharma and Bio Sciences, 2017-10)Sponge is one of the marine organisms of coral reefs that is able to produce secondary metabolite compounds with varieties of bioactivity and structural variations; one of its biological activities is as an antimicrobial. ... -
POTENSI DAUN MANGROVE (Rhizopora mucronata) SEBAGAI ANTIDIABETES
(JURNAL ILMIAH MANUNTUNG, 2020-06-25)Rhizopora mucronate is a typical mangrove plant that easly found on the coast of Muara Badak Beach, Kutai Kartanegara Regency, East Borneo, Indonesia. The purpose of this research is to know the activity of active ... -
Skrining Fitokimia dan Bioaktivitas Tumbuhan Bakau Api-Api Putih (Avicennia alba Blume)
(Jurnal Sains dan Kesehatan, 2020-08-20)Penelitian tentang skrining fitokimia dan biokaktivitas ekstrak batang, kulit batang dan daun Bakau Api api putih telah dilakukan. Masing-masing 100 gram bagian tumbuhan diekstraksi dengan cara maserasi menggunakan metanol ... -
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 oleh ... -
PENENTUAN KADAR ASAM AMINO ESENSIAL (METIONIN, LEUSIN, ISOLEUSIN DAN LISIN) PADA TELUR PENYU DAN TELUR BEBEK
(Jurnal Kimia Mulawarman, 2017-05)ABSTRACT Determination of amino acids essential’s content (methionine, leucine, isoleucine and lysine) on turtle eggs and duck eggs. Turtle eggs and duck eggs are a high animal protein source and easy to obtain. ... -
PEMANFAATAN ABU SABUT KELAPA SEBAGAI KATALIS BASA DALAM PEMBUATAN BIODIESEL DARI MINYAK BIJI JARAK PAGAR (JATROPHA CURCAS. L)
(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 ... -
ISOLASI DAN PENENTUAN KADAR MINYAK ATSIRI DARI DAUN DAN KULIT KAYU MANIS (CINNAMOMUM BURMANNII BL.) DENGAN METODE KROMATOGRAFI GAS
(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 ... -
PENENTUAN KADAR ASAM AMINO ESENSIAL (METIONIN, LEUSIN, ISOLEUSIN DAN LISIN) PADA TELUR PENYU DAN TELUR BEBEK
(Jurnal Kimia Mulawarman, 2017-05)ABSTRACT Determination of amino acids essential’s content (methionine, leucine, isoleucine and lysine) on turtle eggs and duck eggs. Turtle eggs and duck eggs are a high animal protein source and easy to obtain. ... -
STUDI MOLEKUL KITOSAN SEBAGAI MEMBRAN PENGHANTAR PROTON (H+ ) DENGAN METODE AB INITIO
(Jurnal Kimia Mulawarman, 2019-11)ABSTRAK Penelitian ini bertujuan untuk mengetahui apakah senyawa kitosan mampu menggantikan kinerja nafion sebagai penghantar proton (H+). Proses pengkajian dan perhitungan dilakukan secara kimia komputasi dengan ... -
IMPLEMENTASI BAKU MUTU AIR LIMBAH BERBASIS DAYA TAMPUNG BEBAN PENCEMARAN BADAN AIR PENERIMA PADA KEGIATAN PERTAMBANGAN BATUBARA
(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 ... -
PEMANFAATAN BIOMASSA BATANG PISANG (Musa paradisiaca) YANG TERIMMOBILKAN PADA ABU BATU BARA SEBAGAI PENGADSORPSI ION LOGAM BESI (Fe)
(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 ... -
Diversity, Abundance, Uniform and Dominance of Plantones in the Batu Bumbun Reservat Kutai Kartanegara Regency
(International Journal of Research and Innovation in Social Science (IJRISS), 2021-12-21)The research activity on the Diversity, Abundance, Uniformity, and Dominance of Plankton in the Batu Bumbun Reservat aims to determine the potential of plankton as natural food for fish in a waters that serves as a ... -
PEMANFAATAN KARBON AKTIF DARI BATUBARA KOTOR(DIRTY COAL) SEBAGAI ADSORBEN ION LOGAMCd2+ DAN Pb2+ DALAM LARUTAN
(Jurnal Kimia Mulawarman, 2014-05)ABSTRACTThe research of activated carbon utilization of dirty coal as an adsorbent ion cadmium (Cd) and plumbum(Pb) has been done. In this research, the variations of solutions pH value (1, 2, 3, 4, 5 and 6), contact time(5, ... -
STUDI KUANTUM FARMAKOLOGI SENYAWA TURUNAN SULFONAMIDA2,4 DIAMINO 6 QUINAZOLINE SEBAGAI ANTIMALARIA DENGANMENGGUNAKAN METODE AB INITIO
(Jurnal Kimia Mulawarman, 2014-05)ABSTRAKTelah diterapkan metode berbasis Ab-Initio dalam suatu analisa QSAR (Quantum Structure ActivityRelationship) untuk dapat membuktikan dimana letak pusat aktif senyawa sulfonamida yang telahdiketahui nilai persen ...