Article Per Year (5 Year)
p-Index From 2019 - 2024
0.23
P-Index
This Author published in this journals
All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Harpodon Borneo Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Rikha Bramawanto
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Library & Information Science

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Jurnal%20Ilmu%20dan%20Teknologi%20Kelautan%20Tropis

 1 
DISTRIBUTION OF HEAVY METALS IN NATUNA COASTAL WATERS Sophia L Sagala; Rikha Bramawanto; Anastasia R.T.D Kuswardani; Widodo S Pranowo
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (848.025 KB) | DOI: 10.29244/jitkt.v6i2.9008

Abstract

ABSTRACTThe study of Pb, Cd, Cu, Hg, and As and Fe in Natuna coastal waters, Riau Islands was conducted in November 2012. Water and sediment samples were collected from 35 stations by purposive sampling method and those heavy metals were analysed using Atomic Absorption Spectrophotometer, flame type (FAAS). The results showed that concentrations of total Pb, Cd, Cu, Hg, and As in surface water were below instrument detection limit (2 µg/L for Pb, Cd, and Cu; 0.02 µg/L for Hg and As). Moreover, the concentration of metal Fe in surface water was 0.021-0.054 mg/L. Concentrations of Pb and Cu in sediment were 0.05-22.67 mg/kg and 3.77-11.00 mg/kg, respectively, at which the highest concentrations were found near Binjai Estuary. Those concentrations were significantly below the standard levels set by CCME (2002) and ANZECC/ARMCANZ (2000). Concentration of Fe in sediment varied from 751.13-2309.12 mg/kg and showed similar spatial distribution to Cu-in-sediment. No standard level for Fe in waters was available. Generally, it can be concluded that Natuna coastal water was still uncontaminated.  Keywords: heavy metals, iron metal, Natuna coastal waters.
RANCANG BANGUN MINI ROV DENGAN PENGGUNAAN PWM SPEED CONTROLLER MODULE SEBAGAI SISTEM KENDALI Arif Baswantara; Lulut Alfaris; Anas Noor Firdaus; Rikha Bramawanto; Batih Shendy Capri Hareva; Miranda Putri
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 2 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v15i2.43466

Abstract

Remotely Operated Vehicle (ROV) is an underwater vehicle or robot designed to able to move in the water. The increasing need for ROV in the future will require an ROV that is easy to build and operate. This study aims to design and build an ROV that is easy to manufacturing and easy to operate, which can be used for observation purposes in the future. The ROV designed with dimensions of length was 311,89 mm, width was 240 mm and height was 180 mm. ROV had three thruster motors with Pulse Width Modulation (PWM) Speed Controller Module as a control system. The ROV test were conducted motion tests and maneuvering tests, with the results shown that the ROV had an average forward speed of 0,26 m/s with the turning time was 6,3 s for 180° to portside, 6,7 s for 180° to starboard and time for circular motion was 8,2 s. The ROV’s motion test and maneuvering test showed good results, so that further development plans for this ROV can be carried out.
Co-Authors A. Adi, Rizky Anastasia R.T.D Kuswardani Arif Baswantara August Daulat Batih Shendy Capri Hareva D. Puspita, Candra Firdaus, Anas Noor Kusumawardani, Anastasia R. T. D. Lulut Alfaris Mariska Astrid Kusumaningtyas Miranda Putri Sophia L Sagala Widodo S Pranowo Widodo S Pranowo Widodo S. Pranowo