نتایج جستجو برای: gamma ray spectrometry nuts

تعداد نتایج: 499608  

Journal: :Nuclear Instruments and Methods in Physics Research 1983

Journal: :iranian journal of radiation research 0
j. ferdous health physics division, atomic energy centre, dhaka, bangladesh a. begum health physics division, atomic energy centre, dhaka, bangladesh a. islam health physics division, atomic energy centre, dhaka, bangladesh

background: the concentrations and distributions of natural and anthropogenic radioactive materials in soils of the site of rooppur nuclear power plant (rnpp) were investigated with the aim of evaluating the environmental radioactivity and radiation hazard. materials and methods: soil samples were collected from 40 locations in and around the proposed site of rooppur power plant and determined ...

Journal: :iranian journal of radiation research 0
h. miri-hakimabad radiation detection and measurement laboratory, ferdowsi uinvesity of mashhad, mashhad, iran h. panjeh radiation detection and measurement laboratory, ferdowsi uinvesity of mashhad, mashhad, iran a. vejdani-noghreiyan radiation detection and measurement laboratory, ferdowsi uinvesity of mashhad, mashhad, iran

background: prompt gamma neutron activation analysis (pgnaa) is known as a non-invasive technique capable of measuring elemental concentration in voluminous samples in a short period of time. also it is a valuable diagnostic tool for total body elemental measurements. 252cf and 241am-be sources which are usually used in this method, generate not only neutrons, but also emit high-energy and unwa...

Journal: :iranian journal of radiation research 0
a.a. fathivand nuclear science and technology research institute and national radiation protection department, radiation application research school, tehran, iran j. amidi nuclear science and technology research institute and national radiation protection department, radiation application research school, tehran, iran s. hafezi nuclear science and technology research institute and national radiation protection department, radiation application research school, tehran, iran

background: some particular areas contain natural radionuclide at levels much higher than those usually present in earth's crust. the radiological impact of the use of zirconium ore in zirconium industry is due to internal exposure of the lung by alpha particles and external exposure of the body by the gamma rays. the result of gamma spectrometry measurement of the concentrations of the na...

Journal: :iranian journal of public health 0
vahid changizi dept. of technology of radiology and radiotherpay, allied medical sciences school, tehran university of medical sciences, tehran, iran. elham shafiei science and research campus, islamic azad university, tehran, iran. mohammad reza zareh dept. of physics, faculty of science, isfahan university, isfahan, iran.

natural background radiation is the main source of human exposure to radioactive material. soils naturally have radioactive mineral contents. the aim of this study is to determine natural ((238) u, (232) th, (40) k) and artificial ((137) cs) radioactivity levels in wheat and corn fields of eilam province.hpge detector was used to measure the concentration activity of (238) u and (232) th series...

Journal: :تولیدات دامی 0
آیناز اصلانیان کارشناس ارشد گروه علوم دامی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران فرزاد قنبری استادیار گروه علوم دامی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران جواد بیات کوهسار استادیار گروه علوم دامی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران بهروز کریمی شهرکی کارشناس، مرکز تحقیقات فرآوری مواد معدنی ایران، کرج، ایران

this research was conducted to determine the effect of gamma ray (gr) (100 and 150 kgy), sodium hydroxide (50 g/kg dm) and calcium oxide (160 g/kg dm) on gas production parameters and in vitro digestibility of soybean straw. all treatments, except for the gamma ray (100 and 150 kgy) did not have gas production up to 4 hours after incubation and there was a lag time. from 8 to 96 hours of incuba...

Introduction: Nowadays, many people use medicinal plants to manage diseases; therefore, detailed knowledge of the type and level of elements present in these plants is of prominent importance.The present study aimed to determine the weight fraction of 12 elements in the five most common medicinal plants in Iran. The names of these plants are caraway (Carum carvi), savo...

Journal: :iranian journal of radiation research 0
d. balakrishnan department of physics, the cochin college, kochi-2, kerala, india j.p. abraham department of physics, the cochin college, kochi-2, kerala, india a.g. umadevi department of chemistry, nss college, ottapalam, palakkad, kerala, india a. sunil department of physics, fatima mata national college, kollam, kerala, india p.j. jojo department of physics, fatima mata national college, kollam, kerala, india s. ben byju department of physics, fatima mata national college, kollam, kerala, india

background: natural background radiation of a particular region is one of the distinctive factors defining the status of environment. eloor island is an industrial area in ernakulum district of the state of kerala, india. the indoor and outdoor gamma level measurements have been carried out for the region for evaluating the annual effective dose to the population residing in this area. material...

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