نتایج جستجو برای: background dose

تعداد نتایج: 1101593  

ژورنال: متن پژوهی ادبی 1998
ررررررررر این زاده پرویز بیرجندی

M Yarahmadi M.T Bahreyni

Background & Aims: Studying about background radiation is important because human beings are continuously exposed to these radiations which leave energy in tissues and the transferred energy leads to undesirable biologic effects. The level of background radiation differs in indoor and outdoor places. Since, people spend more time indoors, in this research environmental gamma dose rate for indoo...

Journal: :SpringerBriefs in applied sciences and technology 2023

Abstract Heavy rainfall in extreme climates often causes natural disasters such as floods, landslides, and debris flows. Rainfall-induced slope instabilities are major geological (Glade Environ Geol 35:160–174, 1998; Dai et al. Eng 51:279–290, 1999; Iverson Water Resour Res 36:1897–1910, 2000; Lee Pradhan Landslides 4:33–41, 2007; Li 13:1109–1123, 2016a; Ecol 91:477–486, 2016b; Wu Hydro-mechani...

2017
Vinay Jain Birajalaxmi Das

The high level natural radiation areas (HLNRA) of Kerala coast in south west India is unique for its wide variation in the background radiation dose (<1.0mGy to 45mGy/year) and vast population size. Several biological studies conducted in this area did not reveal any adverse effects of chronic low dose and low dose rate radiation on human population. In the present study, global transcriptome a...

Journal: :iranian journal of radiation research 0
f. ebrahimi tazehmahalleh department of medical physics, mashhad university of medical sciences, mashhad, iran h. gholamhosseinian radiotherapy center of emam reza hospital, mashhad, iran m. layegh radiotherapy center, omid hospital, mashhad, iran n. ebrahimi tazehmahalleh motahari clinic, khoy, azarbaijan, iran h. esmaily department of bio-statistics, mashhad university of medical sciences, mashhad, iran

background: the goals of the present research were to investigate the rectal dose during four chosen techniques of cervical cancer radiotherapy and to examine how accurately the treatment planning represents dose measurements, and it’s practicality for routine use as well as, to determine the homogeneity of dose in tumor volume. materials and methods: the study was carried out using a nepton 10...

A. Begum, A. Islam, M.S. Sultana, S. Yeasmin,

Background: The aims of the study are to determine the radioactivity concentrations of 226Ra, 238U, 232Th and 40K in vegetables of a recently found high background radiation area of south-eastern part of Bangladesh and to detect the radiological risks to human from intake of these vegetables. Materials and Method: 10 plant samples were collected randomly from different locations of the study ar...

Journal: :acta medica iranica 0
paymaneh alizadeh taheri department of pediatrics, bahrami children hospital, tehran university of medical sciences, tehran, iran. negar sajjadian department of pediatrics, shariati hospital, tehran university of medical sciences, tehran, iran. bahram beyrami department of pediatrics, bahrami children hospital, tehran university of medical sciences, tehran, iran. mamak shariat family health institute, maternal fetal and neonatal research center, tehran university of medical sciences, tehran, iran.

osteopenia of prematurity (oop) is a preventable disease. improved survival of premature newborns is associated with an increased incidence of oop. the purpose of this study was to compare the prophylactic effects of two low doses of vitamin d (200 and 400 iu/day) on the clinical, biochemical and radiological indices of the rickets of prematurity. in a randomized clinical trial, 60 preterm newb...

Journal: :iranian journal of radiation research 0
m. alhasan department of allied medical sciences, faculty of applied medical sciences, jordan university of science and technology (just), irbid, jordan m. abdelrahman department of allied medical sciences, faculty of applied medical sciences, jordan university of science and technology (just), irbid, jordan h. alewaidat department of allied medical sciences, faculty of applied medical sciences, jordan university of science and technology (just), irbid, jordan y. khader department of public health-community medicine, faculty of medicine, irbid, jordan

background: radiology staff needs to justify the radiation exposures in order to protect themselves and others from radiation risks. the aims of this study were to examine the awareness level of radiation dose and protection amongst radiographers and to compare their performance between major jordanian hospitals. materials and methods: a cross-sectional survey was conducted in 4 major jordanian...

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