A - Mathematics and Natural Sciences: Recent submissions
Now showing items 141-160 of 309
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Isolation of Active Compounds from Original Plants of East Kalimantan as Cosmetics
(Atlantis Press, 2021-04-10)Phytochemical and antioxidant activity tests were conducted on ethanol extracts of the trunk, flower and leaf of Senggani (Melastoma candidum D.Don). Each sample was macerated with ethanol, and then it was concentrated ... -
Aktivitas Antioksidan Fraksi Metanol Ekstrak Batang Merung (Coptosapelta tomentosa (Blume) Valenton ex K. Heyne)
(Jurnal Kartika Kimia, 2021-05-31)Penelitian aktivitas antioksidan dari batang merung (Coptosapelta tomentosa (Blume) Valenton ex K. Heyne) telah dilakukan. Ekstraksi dari batang merung dilakukan dengan menggunakan pelarut yaitu metanol, n-heksana ... -
SINTESIS MALEIL ASETAT MELALUI REAKSI ESTERIFIKASI ASAM MALAT MENGGUNAKAN PEREAKSI ASETAT ANHIDRAT
(JURNAL ATOMIK, 2021-03-31)Research has been carried out on the synthesis of maleil acetate through esterification reactions of malic acid using anhydrate acetate. Esterification of malic acid was carried out with a ratio of anhydrate acetate 1:2 ... -
UJI FITOKIMIA DAN UJI AKTIVITAS ANTIOKSIDAN EKSTRAK FRAKSI n-HEKSANA, ETIL ASETAT DAN ETANOL SISA DARI DAUN SUNGKAI (Peronema canescens Jack.) DENGAN METODE DPPH
(2021-03-31)Research on phytochemical test and antioxidant activity on sungkai leaf extract (Peronema Canescens Jack.) using DPPH (1,1-diphenyl-2-picrylhydrazyl). Phytochemical test result showed that secondary metabolites in ... -
Isolation of Active Compounds from Original Plants of East Kalimantan as Cosmetics
(Atlantis Press, 2021-04-10)Phytochemical and antioxidant activity tests were conducted on ethanol extracts of the trunk, flower and leaf of Senggani (Melastoma candidum D.Don). Each sample was macerated with ethanol, and then it was concentrated ... -
Aktivitas Antioksidan Fraksi Metanol Ekstrak Batang Merung (Coptosapelta tomentosa (Blume) Valenton ex K. Heyne)
(2021-05-31)Penelitian aktivitas antioksidan dari batang merung (Coptosapelta tomentosa (Blume) Valenton ex K. Heyne) telah dilakukan. Ekstraksi dari batang merung dilakukan dengan menggunakan pelarut yaitu metanol, n-heksana ... -
The 3rd International Conference on Mathematics and Sciences 2021
(FMIPA, 2021-10-12) -
SK JURI MTQ FMIPA UNMUL
(REKTOR UNMUL, 2021-06-07) -
Seertifikat Pemateri Seminar Biodiversitas
(2021-06-19) -
Sertifikat Juri Debat Mahasiswa
(2021-04-24) -
SK Tim Pengelola Danau Kaskade Mahakam
(2021-09-14) -
Kartu Anggota MLI
(2021-12-31) -
Pengaruh Inherent Moisture Terhadap Nilai Kandungan Kalori Pada Batubara Kaltim (Studi Kasus Data Im Dan Data Kalori Tahun 2019 Di PT. Geoservices Samarinda)
(Jurnal Geosains Kutai Basin, 2022-01-14)ABSTRAK Nilai kalori batubara dipengaruhi oleh beberapa faktor seperti kandungan air bawaan (inherent moisture) atau IM, abu (ash), karbon tetap (fixced carbon), total sulfur dan zat terbang (volatile matter). Tujuan ... -
IDENTIFIKASI KEBERADAAN JALUR GOA BAWAH TANAH (BUNKER) BERDASARKAN ANALISIS DATA MAGNETIK DI DESA JEMBAYAN
(Jurnal Geosains Kutai Basin, 2021-02-02)ABSTRACT Existence of underground cave (bunker) in Jembayan has been known for long, but underground pathway was sealed and lost due to landslide. Goal of this research is to identify existence of underground cave ... -
Analisis Korelasi Scaled Distance Terhadap Getaran Tanah (Ground Vibration) Pada Operasi Peledakan Batubara
(Jurnal Geosains Kutai Basin, 2021-02-02)ABSTRACT The optimum vibrations generated from the delay, distance, and explosive settings on the destruction of the ground cover or OB can accumulate the effect of the damage. Research was purposed to view the process ... -
Studi Penentuan Percepatan (Acceleration) Tanah Daerah Ampana, Balikpapapan, Bone, Bulukumba, Bau-Bau Akibat Gempabumi Donggala 28 September 2018
(Jurnal Geosains Kutai Basin, 2021-02-02)ABSTRACT Ground acceleration that was caused by an earthquake can cause damage both physical and material. The research aims to determine the value of ground acceleration and the effects caused by earthquake. The data ... -
Influences El Nino Southern Oscillation (ENSO) on Rainfall in East Kalimantan-Indonesia
(2021-10-12)The El Nino Southern Oscillation (ENSO) is a global hydro-climate phenomenon that affects temperature [1] rainfall [2], discharge, and evaporation. The aims of the study are to examine influences ENSO on rainfall in East ...