نتایج جستجو برای: natural and man made radionuclides
تعداد نتایج: 16917899 فیلتر نتایج به سال:
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...
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...
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...
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...
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...
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...
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