نتایج جستجو برای: radioactive

تعداد نتایج: 20999  

Journal: :RADIOISOTOPES 1962

Journal: :Časopis pro pěstování matematiky a fysiky 1901

2013
P. SPrangle B. Hafizi

This paper presents a new concept for the remote detection of radioactive materials. The concept is based on the detection of electromagnetic signatures in the vicinity of radioactive material and can enable stand-off detection at distances greater than 100 m. Radioactive materials emit gamma rays which ionize the surrounding air. The ionized electrons rapidly attach to oxygen molecules forming...

2001
Haruna Tamano Shuichi Enomoto Rieko Hirunuma Atsushi Takeda

Based on our previous finding that Zn is preferentially taken up in rat brain tumors, we examined the uptake of various radioactive elements in a rat brain tumor by using the multitracer technique. The multitracer solution was intravenously injected into rats 14 days after intrahippocampal injection of C6 glioma. Brain distribution and blood level of radioactive elements were determined 1 h aft...

2017
Roghaieh Samadi Babak Shafiei Fereidoun Azizi Asghar Ghasemi

Radioactive iodine therapy is commonly used as an adjuvant therapy in follicular and papillary thyroid carcinoma (PTC) and in the treatment of Graves' disease (GD). The basis of this therapy is the accumulation of radioactive iodine by the sodium-iodide symporter (NIS) in the thyroid gland. Expression of NIS by extrathyroidal tissues such as islets of pancreas has been reported. Radioactive iod...

Journal: :international journal of environmental research 2012
a.h. gallardo h. aoki

the disposal of nuclear wastes is one of the most controversial issues faced by authorities in japan. in this regard, a survey was conducted among 172 university students to analyze the attitude towards the sitting of a nuclear waste repository in the country. the study focused on a number of variables that influenced the perception of risks before the 2011 tohoku earthquake and tsunami. resul...

Journal: :iranian journal of radiation research 0
o. kiavar department nuclear engineering, science and research branch, islamic azad university, tehran, iran m. sadeghi agricultural, medical & industrial research school, nuclear science and technology research institute, karaj, iran

background: recently, different investigators have studied the possibility of radiation therapy in restenosis prevention and have shown promising results. in this study a unique radioactive source for intra vascular brachytherapy (ivbt) was investigated. the two-dimensional dose distribution in water for a 32p ivbt stent has been calculated. the pure beta emitter source 32p has been coated on p...

Journal: :iranian journal of radiation research 0
i. akkurt suleyman demirel university science faculty physics department, isparta, turkey h. canakci gaziantep university engineering faculty civil engine department, bol. gaziantep, turkey

background: radiation shielding properties is an important for a material wish can be used the photon attenuation coefficients of clay produced using different rate of boron have been measured for the purpose of radioactive waste disposal. materials and methods: the measurement has been performed using gamma spectrometer contains nai (tl) detector at the photon energies of 662, 1173 and 1332 ke...

2007
Davis A. Young

W ithin a decade of the discovery of radioactivity in 1896, the chemical elements uranium, radium, polonium, and thorium were recognized as radioactive; the basic theory, mechanisms, and mathematics of radioactive decay were established; decay rates of some radioactive chemical elements were determined; and the ages of two mineral specimens were calculated for the first time from their uranium ...

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1903

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید