نتایج جستجو برای: radiation hazard

تعداد نتایج: 301413  

Abbas Hosseini, Masoomeh Fasih zaban,

Introduction: One of the sources of natural occurring radiation was soils. The purpose of article was to determine soil pollution by radiation absorbed dose rate, radium equivalent activity, external hazard index, annual gonad dose equivalent and annual effective dose equivalent. Methods & Materials: The soil samples was located in Chahbahar city in Blouchestan of Iran, was chosen for studyin...

B. Fouladi Dehaghi, J. Deris,

Background: Naturally occurring radioactivity is a root cause of human exposure to harmful radiation. The occupational exposure hazard due to natural radionuclides occurring in drilling wastes is especially important in this regard. In this study the concentration of radionuclides namely 232Th, 226Ra and 40K were assessed in soil samples that were taken from various oil drilling areas. Methodol...

2015
Saurabh R. Shrivastava Prateek S. Shrivastava Jegadeesh Ramasamy

Dear Editor, Radiation is part of mans’ environment, and people are usually exposed to both natural (viz. cosmic rays, environmental soil, water, vegetation, etc.) and man-made (viz. medical exposure, occupational exposure, nuclear fallout, television, mobile, etc.) sources of radiation. In the modern era, radiation is like a double-edged sword, with utilities in fields like medicine, industry,...

2015
Hilary Smyth

BMI: Body Mass Index; RT: Radiation Therapy; EBRT: External Beam Radiation Therapy; BT: Brachytherapy; IGRT: Image Guided Radiation Therapy; BCR: Biochemical Recurrence; OS: Overall Survival; ADT: Androgen Deprivation Therapy; IMRT: Intensity Modulated Radiation Therapy; PCS: Physical Component Scale; EPIC: Expanded Prostate Cancer Index Composite Scoring System; SF-12: Short Form Health Survey...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی 1387

چکیده ندارد.

حسینی, مصطفی, حلمی کهنه شهری, مهرداد, رضایی, ساسان, ماسوریان, انسیه, موسوی, طاهره, پورمند, محمدرضا, کریمی, علی, گلبابایی, فریده,

Introduction: Nowadays, HEPA filters is used in hospitals, clean rooms, microbiology hoods, ventilation of surgery rooms, and Pharmacy for removing microorganisms and reduce health hazard. The aim of this study is to increase the efficiency of HEPA filters with UVC radiation to reduce the density of airborne microorganisms. Material and Method:  The closed–loop chamber was made to evaluate S...

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