P - Mathematics and Natural Sciences: Recent submissions
Now showing items 101-120 of 147
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Food and feeding habits of two species ornamental fishes from Bira Cot, Aceh Besar, Indonesia
(IOP Science, 2021-03-01)Food and feeding habits of the two ornamental fish species confined to 2 genera and 1 family from Bira Cot River. The study has been conduction between February, 2020 and July, 2020. A total of 20 fishes were randomly ... -
SENYAWA TURUNAN OLEANAN DARI KULIT BATANG Melochia umbellata (Houtt) Stapf var. DEGRABRATA K DAN BIOAKTIVITASNYA
(Seminar Nasional Kimia dan Pendidikan Kimia UNS, 2015-04-18)Senyawa turunan oleanan 3-asetil-12-oleanen-28-oat diisolasi dari fraksi n-heksan kulit batang M. umbellata (Houtt) Stapf var. degrabrata K. Struktur molekul ditentukan melalui analisis data spektroskopi IR, NMR 1D dan NMR ... -
Investigation of mechanical properties for Non-Homogeneous by image tracking method
(Elsevier, 2021-02-26)We have investigated new approach to predict mechanical properties for non-homogeneous materials. The investigation used copy paper 100 gsm as sampling object using image tracking method and based on bending of cantilever ... -
A Preliminary Study for Simple Physics Models of Coconut Tree
(IOP Science, 2019)An investigation of how coconut palm tree withstands gale force winds has been performed. When observed carefully, the motion of the stalks and leaves affected the wind resistance. The stalks and leaves move randomly ... -
TiO2 Photocatalytic Degradation of Methylene Blue Using Simple Spray Method
(IOP Science, 2019)The present work focused on the effects of TiO2 in degrading organic wastewater. Technical TiO2 of anatase crystalline phase was used. TiO2 photocatalyst showed a powerful result in destroying organic effluent. Spray coating ... -
A Study of Physical and Mechanical Properties of Nata de Coco in the Market
(IOP Science, 2019)Nata de coco is a bacterial cellulose produced by Acetobacter xylinum in the process of fermenting coconut water. It is renowned for its high fiber content. The chewiness of nata de coco is proportional to the fiber content. ... -
Production of Bioethanol from Dragon Fruit Wastes by Using Aspergillus niger and Saccharomyces cerevisae
(Atlantis Press, 2022-01-05)East Kalimantan can produce dragon fruit throughout the year, while East Java is only in the rainy season. This fruit will be produced abundantly when the peak season comes and often becomes waste. To reduce this cellulosic ... -
AKTIVITAS ANTIOKSIDAN EKSTRAK ETIL ASETAT DAUN DAN KULIT BATANG MANGROVE Rhizopora mucronata
(Prosiding Seminar Nasional Kimia Berwawasan Lingkungan 2020, 2020)Kekayaan tumbuhan Indonesia banyak dimanfaatkan sebagai alternatif pengobatan penyakit degeneratif. Salah satu tumbuhan yang diketahui memiliki khasiat sebagai bahan obat alternatif adalah tumbuhan mangrove jenis ... -
AKTIVITAS ANTIOKSIDAN EKSTRAK ETIL ASETAT DAUN DAN KULIT BATANG MANGROVE Rhizopora mucronata
(Prosiding Seminar Nasional Kimia Berwawasan Lingkungan 2020, 2020)Kekayaan tumbuhan Indonesia banyak dimanfaatkan sebagai alternatif pengobatan penyakit degeneratif. Salah satu tumbuhan yang diketahui memiliki khasiat sebagai bahan obat alternatif adalah tumbuhan mangrove jenis ... -
Determination of Distribution Heavy Metal Ion Pb and Cu on Water And Sediment in The Region of Delta Mahakam Estuary, East Borneo Using 3-Dimension Numeric Model
(Program Studi Kimia Fakultas MIPA Universitas Mulawarman dan HKI Kaltim, 2016-08-30) -
Kajian Kualitas Udara Kota Samarinda Ditinjau dari Aspek Aktivitas Kendaraan Bermotor
(Program Studi Kimia Fakultas MIPA Universitas Mulawarman, 2014-10-18) -
Trace Analysis of Cd (II) Ion Using PSDVB-EDTA in Pre-concentration Technique with Off-line Method
(The Chemical Society of Thailand under The Patronage of Her Royal Highness Princess Chulabhorm Mahidol, 2015-01-22)The trace analysis of Cd(II) ion used polystyrene divinyl benzene-ethyene diamine tetracetate (PSDVB-EDTA) as the material column filler in pre-concentration technique with off-line method has been done. The pre-concentration ... -
Irrawaddy Dolphin Monitoring Using SSBL System in Mahakam River
(Research Center for Electronics and Telecommunication Indonesian Institute of Sciences, 2013-03-27)Irrawaddy Dolphin's (Orcaella brevirostris) community known as pesut mahakam, they are bio-sonar clicks for echolocation. This system catch their echo-location with passive Super Short Baseline (SSBL) type hydrophones , ... -
Hydroacoustic Survey Using SSBL System
(Pemerintah Provinsi Kalimantan Timur, Layanan Internasional Universitas Mulawarman, 2012-07-09) -
A Couple Hydrodynamics and Ecosystem Model in an Estuarine System : Application in the Mahakam Estuary, East Kalimantan
(Pemerintah Provinsi Kalimantan Timur, Layanan Internasional Universitas Mulawarman, Kemdikbud RI, 2012-07-09)Development a couple physical-biological numerical models are useful tools for understanding the relevant processes and the influence of biota and human activity on the ecological conditions in the estuary, and such as ... -
Penentuan Luas dan Volume Kontaminan Melamin di Area X Bontang Berdasarkan Nilai Resistivitas Geolistrik dan Sampel Coring
(Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman, 2017-12)Melamine is a kind of polymer which could contaminate the environment. Bontang X area has been known to be contaminated by the melamine. The research aimed to determine the area and volume contaminated by the malamine and ... -
Kaitan antara Sudut Pencahayaan dan Intensitas Cahaya Belakang Aperture
(Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman, 2017-12)The experiment on the correlation of exposure angles and light intensities behind the aperture has been performed in the rooms with different colors (i.e.: white, pink, and black). In the experiment the diameter of opening ... -
Penentuan Kecepatan Aliran Darah Aorta Torakalis Pasien Abdomen dengan Data Grafis Ultrasonografi Color Doppler di Instalasi Radiologi RSUD Abdoel Wahab Sjahranie Samarinda
(Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman, 2017-12)Blood stream velocities of aorta thoricalis of the Abdomen Patient were determined by using graphical data of color Doppler ultrasonography. The determination of the velocities was by using the polygon method, that was by ... -
Analisis Pengaruh Slice Thickness terhadap Kualitas Citra Pesawat CT-Scan
(Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman, 2017-07)Telah dilakukan penelitian untuk menyelidiki kaitan slice thickness (tebal irisan) dan kualitas citra pesawat CT-Scan yang diukur dari kontras resolution dan noise citra CT-Scan. Penelitian tersebut dilakukan dengan cara ... -
Visualisasi Tiga Dimensi Kontaminan Melamin di Area "X" Bontang dengan Metode Geolistrik Konfigurasi Dipole-Dipole dan Analisis Sampel Coring
(Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman, 2017-03)Telah dilakukan pengukuran nilai resistivitas sampel coring dan telah dilakukan pengolahan data geolistrik mapping konfigurasi dipole-dipole di area "x" Bontang. Pengukuran nilai resistivitas dan pengolahan data geolistrik ...