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Natural B
Published by Universitas Brawijaya
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Core Subject : Social,
Environmental Science
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Articles 14 Documents
 1   2 
Search results for , issue "Vol 1, No 4 (2012)" : 14 Documents clear
Motion Range Event Detection Method on Application of Genesis Detection System on Volcanic Visual Monitoring Rio Arie Purnama; Sukir Maryanto; Didik R. Santoso
Natural B, Journal of Health and Environmental Sciences Vol 1, No 4 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (45.176 KB) | DOI: 10.21776/ub.natural-b.2012.001.04.7

Abstract

The process of volcano research through visual monitoring usually takes a long time.  There is many time possibility of  an occurance of a specific volcano phenomena such as lava and plum. The problem with this monitoring activity can be helped through visual monitoring system that enables constant recording and automatically detects events that can be observed through the visual volcano object. This monitoring system works through an event detection application with static object definitive, fixed focus definitive and sensing area definitive combination method that forms a simple yet effective method called Motion Range Event Detection. This method is a form of volcano object monitoring using camera sensors by defining the form of volcano object as a static object and defining the object phenomena changes based on a predetermined area. 
Filler Composition Effects on Tensile Strength And Composite Material Toughness of Rice-Resin Husk Powder Istiroyah Istiroyah; L. Nuriyah; Retnowati Retnowati
Natural B, Journal of Health and Environmental Sciences Vol 1, No 4 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (10.193 KB) | DOI: 10.21776/ub.natural-b.2012.001.04.8

Abstract

The rice husk flour- resincomposite has been made. This research aims to make the rice husk flour - resin composite and analyze the effect of filler composition to their tensile strength and toughness. The filler composition used is 0%, 10%, 20%, 30, 40%, 50% dan 60%. The Results of tensile test show that the best tensile strength is 113.02 ±11.60 MPa for polystiren sample. The best toughness with impact test is 47.92±0,36 KJ/m2 for 30% filler with polyester resin.
Measurement of PM2.5 Concentration at the Photocopy Machine Center at Brawijaya University Environment Arinto Y. P. Wardoyo; Unggul P Juswono; Rowinda Sitanggang
Natural B, Journal of Health and Environmental Sciences Vol 1, No 4 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (18.252 KB) | DOI: 10.21776/ub.natural-b.2012.001.04.9

Abstract

Air pollution is one of matters that faced by all states in this world. In outline air pollution can be distinguished into two there are outdoor pollutant and indoor pollutant. Material or substance which can pollute the air could organized as gas and particle. One source of indoor pollutant is photocopy machine. This study presents the measurements of PM2,5 concentration at several copy centers in Brawijaya University. The aims were to measure the PM2,5 concentrations at the eight copy centers using the Kanomax Mass Monitor Piezobalance 3522. The results from nine hours average PM2,5 value as that during business ranged from 0,02-0,09 mg/m3. The showed that the six of the 8 copy centers having the PM2,5 concentration more than the Indonesia governments air quality standard of 0,035 mg/m3 at 24 hours.
Radiation Generator Design for Increasing Efficiency in Gas Stove M. Djamil
Natural B, Journal of Health and Environmental Sciences Vol 1, No 4 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (58.645 KB) | DOI: 10.21776/ub.natural-b.2012.001.04.10

Abstract

It has been designed an additional part of  a gas stove called ARP that is aimed to increase an efficiency of  the stove.  The ARP was made of Nickel that was a circle in shaped. The ARP was varied in  diameter of the phrame, a length of wire, and a diameter of wire named Shape Factor (FB). An other variables set up to add an efficiency of stove was position factor (FP) consisting of a position of the ARP in between the stove and the load.  The effisiency of stove was investigated by varying the FB and FP factors in a different set of value. The results showed that the efficiency of  stove was increased of  20 % for the FP was set of 0.17 and the FB was varied between 0.31 and 0.42.

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