Sugeng Rianto
Pusat Teknologi Bahan Bakar Nuklir (PTBBN), BATAN Kawasan Puspiptek-Tangerang Selatan 15314, Banten

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

PEMBUATAN APLIKASI UNTUK MENENTUKAN FASE DAN VISIBILITAS BULAN DENGAN MENGGUNAKAN ALGORITMA JEAN MEEUS Agus P., Arif; Rianto, Sugeng; Abdurrouf, abdurrouf
Physics Student Journal Vol 1, No 1 (2013)
Publisher : Department of Physics - Faculty of Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Algoritma Jean Meeus merupakan salah satu dari sekian banyak algoritma yang digunakan dalam perhitungan astronomi. Salah satu penerapannya adalah dalam menentukan fase bulan baru (new moon) dan visibilitas bulan sebagai penanda masuknya awal bulan. Dengan menggunakan algoritma tersebut, dibuat sebuah aplikasi dengan bahasa pemrograman Java untuk membantu dalam memprediksi fase bulan baru dan visibilitas bulan untuk awal Ramadhan dan Syawal.
Simulation of TLD-700 (Lif; Mg, Ti) for Determination of Hp Equivalent Dose (10) on Radiation Workers (Gamma) with MCNPX Approach Pradipta, Aisyah Dianing; Rianto, Sugeng; Bunawas, Bunawas
Natural B Vol 4, No 1 (2017)
Publisher : Natural B

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.211 KB) | DOI: 10.21776/ub.natural-b.2017.004.01.6

Abstract

Radiation workers are compulsory to monitoring radiation dose for reduce the effects of ionizing radiation on the body. Government through similar BAPETEN maximum dose for radiation workers is 20 mSv/year. One of the personal monitoring tool that is widely used is the TLD-700 (specially for gamma radiation). The equivalent dose to the workers body to a depth of 10mm (Hp(10)) able to be predicted from a simulation approach MCNPX. To simulation needed input model of geometry which adapted to the geometry experiments. The simulation results at the source position vertical to the dose rate is obtained 8,565mSv/h, which shows a difference of 1.5% on the results of the experiment, so the Hp(10) dose can be determined. This experiment able to simulated for contamination source 137Cs on the floor position unable to be done experimentely contamination source. Estimation through simulation, the dose rate on the floor at 14.920 mSv/h. The results showed the difference of dose rate through dose rate 75% vertical source larger than the vertical direction. According to the result need to be calibration TLD-700 for the source position from the bottom. Because the greater the dose rate (from below), the greater the Hp(10) dose is received. With the result clear that considerable potential MCNPX used to estimate personal Hp(10) dose for radiation workers, specially in relation to the case of a radiation accident.
Monte Carlo Simulation to Determine Deposition Ratio of Dosage in a-SI Epid with Dose Deposition on Water Herwiningsih, Sri; Rianto, Sugeng; Yuana, Firdy
Natural B, Journal of Health and Environmental Sciences Vol 2, No 3 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1094.941 KB) | DOI: 10.21776/ub.natural-b.2014.002.03.1

Abstract

The study aimed to explore the use of a-Si EPID as a dosimeter for IMRT delivery. The main objective of the study was to determine the ratio of dose deposited in a-Si EPID and the dose deposited in water. Linac used in the simulation was Electa Precise Linac and A-Si EPID model used in the study was based on the configuration of iView GT Elekta a-Si EPID. Study the characteristic of energy deposition at a-Si EPID and water detector shows that the energy deposition at a-Si EPID detector is higher than that of water detector at low photon energy (<0.1 MeV). This is caused by an enhancement of photoelectric interaction between photon beam and a-Si EPID detector at low energy X-rays. The simulation of dose deposition by using square fields show that the ratio between the dose deposition of a-Si EPID and the dose deposition of water detector (α) increases with an increase of the field size. The value of α ranges from 0.60 – 0.66. The similar result was shown in the simulation of dose deposition by using IMRT beam, in which the value of α ranges from 0.63 – 0.64. The α value is useful to relate the measured dose from detector to the equivalent dose of water, which is often used as a reference medium in radiotherapy dosimetry.  
Analisis Faktor-Faktor Yang Berhubungan Dengan Keracunan Merkuri Pada Penambang Emas Tradisional di Desa Jendi Kecamatan Selogiri Kabupaten Wonogiri Rianto, Sugeng; Setiani, Onny; Budiyono, Budiyono
Jurnal Kesehatan Lingkungan Indonesia Vol 11, No 1 (2012): April 2012
Publisher : Master Program of Environmental Health, Faculty of Public Health, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkli.11.1.54-60

Abstract

Background : Gold mining at Jendi Village, Selogiri Subdistrict, Wonogiri District is artisanal gold mining without a permit/artisanal mining. The activity of gold mining was carried on traditional methode without a good planning techniques and lack of equipments, which is system of underground mines through making tunel and dweel following quartz vein direction that was predicted have a high gold content. The gold mining at Wonogiri District is divided into some groups which can produce gold in 1-2 grams average per day. Processing system use  mix-mercury whereas it can be potentially cause environmental pollution and health problems for communities and workers. The goal of research is to analyse factors which is associated with mercury poisoning of gold mining workers at Jendi Village, Selogiri Subdistrict, Wonogiri District. Methods : This research is was an Explanatory Research with cross sectional approach. Sample was selected using systematic probability sampling. The total of samples were taken 60 workers. The research was taken through laboratory investigation mercury level in blood and interview guide, those were exceed than normal standard by WHO analyzed with Chi Square and Logisttic Regression test. Results: The characteristics of respondents are 17-60 years old, 1 month – 29 years worked periode with 1-18 hours per day. From 60 samples, there were 9 workers using masker, 1 worker using glass eye, 23 workers using boots, 9 workers using long clothes and 27 workers never using self personal protection equipment along doing work. There was found no correlation between periode of work,  total of mix mercury used in mining and using personal protective equipments with mercury level in blood. The finding 40 people (66,67%) has mercury poisoning. The most influenced variable to the mercury poisoning is working days in a week and working time in a day of the Traditional Gold Miner at Jendi Village, Selogiri Subdistrict, Wonogiri District. Keywords : Mercury poisoning, Workers, Gold mining