نتایج جستجو برای: environment dose

تعداد نتایج: 822478  

Journal: :iranian journal of medical physics 0
m. sedaghat ph.d. student in medical physics, university of sherbrooke, canada. m.h zahmatkesh assistant professor, novin medical radiation institute, tehran, iran. r. jaberi m.sc. in medical physics, cancer institute, imam hospital, tums, tehran, iran. sh. akhalghpoor assistant professor, faculty of medicine, tums & novin medical radiation institute, tehran, iran. m. allahverdi assistant professor, dept. of medical physics, faculty of medicine, tums & cancer institute of imam hospital, tehran, iran.

introduction: despite the fact that the clinical implementation of polymer gel dosimetry has been facilitated after the introduction of normoxic gels, there are still complications in its clinical routine use that are under investigation. in the current work, the feasibility of using a normoxic polymer gel dosimeter named magica has been investigated for use in our clinical brachytherapy applic...

Journal: :iranian journal of radiation research 0
k. kant aggarwal college, ballabgarh, faridabad, 121 004; formerly at department of physics, kl mehta dn college for women, faridabad, haryana, 121 001, india rashmi department of physics, gfitm, ballabgarh, faridabad, haryana, india r.g. sonkawade inter university accelerator centre, new delhi, 110 067, india g.s. sharma department of physics, g.l.a. institute of technology and management, mathura (u.p) 281 001, india r.p. chauhan department of applied physics, nit, kurukshetra, 136 119, india s.k. chakarvarti department of applied physics, nit, kurukshetra, 136 119, india

background: radon and thoron are invisible, odorless, heavy and radioactive gases which are ubiquitously present in dwellings and in the environment. in the present work, seasonal variation of indoor radon, thoron and their progeny concentrations has been studied in the dwellings of industrially polluted cities in district faridabad, haryana and district mathura in uttar pradesh. materials and ...

2013
Debabrata Datta

Nuclear power plants are always operated under the guidelines stipulated by the regulatory body. These guidelines basically contain the technical specifications of the specific power plant and provide the knowledge of the discharge limit of the radioactive effluent into the environment through atmospheric and aquatic route. However, operational constraints sometimes may violate the technical sp...

Journal: :journal of biomedical physics and engineering 0
m m firoozabadi university of birjand gh izadi vasafi k karimi-sh university of birjand m ghorbani

background: in neutron interaction with matter and reduction of neutron energy due to multiple scatterings to the thermal energy range, increasing the probability of thermal neutron capture by neutron captures makes dose enhancement in the tumors loaded with these materials.   objective: the purpose of this study is to evaluate dose distribution in the presence of  10 b ,  157 gd  and  33 s  ne...

Journal: :iranian journal of radiation research 0
r. chang-li cancer center, renmin hospital of wuhan university, wuhan 430060, china c. yu-xin cancer center, renmin hospital of wuhan university, wuhan 430060, china w. lu-zhou cancer center, renmin hospital of wuhan university, wuhan 430060, china wu-bing cancer center, renmin hospital of wuhan university, wuhan 430060, china s. qi-bin cancer center, renmin hospital of wuhan university, wuhan 430060, china

background: 3dcrt (three-dimensional conformal radiotherapy) and imrt (intensity-modulated radiotherapy) has provided us with tools to delineate the radiation dose distribution of tumor targets. however, the precision of radiation can be compromised by respiratory motion, which usually limits the geometric and dosimetric accuracy of radiotherapy. the purpose of this study is to evaluate the imp...

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