نتایج جستجو برای: natural and man made radionuclides

تعداد نتایج: 16917899  

Journal: : 2022

During a stay in radioactively contaminated forest, person is inevitably exposed to ionizing radiation from the man-made radionuclides. The purpose of this study was evaluate external component annual effective dose due exposure forests following Chernobyl accident. conducted south-western districts Bryansk region Russia period 2015–2021. Field (in situ) gamma spectrometric measurements were ca...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1393

this studyinvestigated therelations between examinees’ academic knowledge and theirperformanceonreading section of ielts and toefl (ibt) through using generalizabilitytheory. g-theory was utilized to investigate the effects of subtest, test items, participants and academic background on the reliability of ielts and toefl (ibt) score. tosamplethe subjectsofthissurvey,a placement testwasadministe...

2004
Tim Rees

Object detection in images is a very active research topic in many disciplines. Probabilistic methods have been applied to the problem with varying degrees of success. A logistic classifier, Markov random field (MRF), and discriminative Random Field (DRF) were used for the detection of man-made structures in natural images. It was found that the MRF and DRF models were often improvements over t...

Journal: :iranian journal of nuclear medicine 1994
roghayeh bagherzadeh akbari

this study aims to give data concrning phantom material made in iran i'rom a natural rubber which is used for obtaining calibration data for patient dose measurements in nuclear medicine applications of radionuclides for therapy and diagnosis.is showed to be a tissue equivalent material cheap (25000 rials the material itself and 35000 rials the process of casting and moulding etc.), easily avai...

Journal: :iranian journal of radiation research 0
s. ashrafi department of nuclear physics, faculty of physics, university of tabriz, iran sh. alaei department of nuclear physics, faculty of physics, university of tabriz, iran

background: the existence of some radionuclides in soil and some building materials produce a β-γ radiation field, which in some regions the exposure of these radionuclides to human is high. materials and methods: the air-absorbed dose, indoor and outdoor annual effective dose of soil and some building material samples (ceramic, granite, gypsum, etc.). the samples were collected from 35 differe...

2009
I. I. Kryshev A. I. Kryshev T. G. Sazykina

Absract. The radiological impacts from radionuclide releases into Techa, and Yenisei Rivers in Russia are discussed. The dose assessments for human and natural biota are calculated using the methodology of multiple pathways of exposure. In the Mayak complex area the collective dose to the Techa River population during 19491956 was 6,200 man-Sv. The collective dose from radioactive discharges of...

2002
A K Young D Mccubbin W C Camplin

Journal: :Izvestiâ vysših učebnyh zavedenij. Priborostroenie 2019

Journal: :Investment Management and Financial Innovations 2017

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