نتایج جستجو برای: equivalent activities raeq range from 21050

تعداد نتایج: 6140486  

Journal: :محیط شناسی 0
احمد جهانگیری دانشیار گروه زمین شناسی دانشکدة علوم طبیعی، دانشگاه تبریز صالح اشرفی استادیار فیزیک هسته ای دانشکدة فیزیک، دانشگاه تبریز

the radionuclides 226ra, 232th and 40k concentrations measured as well as radiological parameters, for 14 granite samples that use in iran as building material were calculated. the measurements of the radioactivity concentrations were carried out at nuclear physics laboratory university of tabriz. this subject is important in environmental radiological protection, since granites are extensively...

Journal: :iranian journal of radiation research 0
q.m. rashed-nizam department of physics, university of chittagong, chittagong-4331, bangladesh m. rahman department of physics, university of chittagong, chittagong-4331, bangladesh m.k. tafader institute of marine science, university of chittagong, chittagong -4331, bangladesh m. zafar institute of marine science, university of chittagong, chittagong -4331, bangladesh a.k.m.s.i. bhuian radioactivity testing and monitoring laboratory, bangladesh atomic energy commission, chittagong medical college campus, chittagong, bangladesh r.a. khan radioactivity testing and monitoring laboratory, bangladesh atomic energy commission, chittagong medical college campus, chittagong, bangladesh

to assess the environmental radioactivity levels and hence to determine the population exposure in kutubdia island, bangladesh the sediment samples were analyzed by using gamma ray spectrometry. in those sediment samples the average activity concentration of natural radionuclides 238u, 232th and 40k were found 15.39±1.67, 38.35±0.76 and 475.51±21.15 bq/kg respectively. the activity concentratio...

A.K.M.S.I. Bhuian, M. Kamal, M. Rahman, M. Zafar, M.I. Chowdhury, M.K. Tafader, M.N. Alam, Q.M. Rashed-Nizam, R.A. Khan,

To assess the environmental radioactivity levels and hence to determine the population exposure in Kutubdia Island, Bangladesh the sediment samples were analyzed by using gamma ray spectrometry. In those sediment samples the average activity concentration of natural radionuclides 238U, 232Th and 40K were found 15.39±1.67, 38.35±0.76 and 475.51±21.15 Bq/kg respectively. ...

Introduction: Nuclear radiation is potentially harmful to humans and soil contamination with radionuclides is the main source of human radiation exposure. These radionuclides can., enter to human body through the food chain. In this study, 34 soil samples were collected from between Arak city and Shazand Power Plant over 20 km length and analyzed. Materials and Methods: The specific activities ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی و پایه 1390

the present study aimed at investigating the relationship between iranian efl teachers’ classroom management orientations and their teaching styles. additionally, the difference between male and female teachers’ teaching styles and classroom management orientations and their relationship with experience and age were explored. three hundred efl teachers filled in attitudes and beliefs on classro...

2014
Hasan Fayyad-Kazan Luc Perneel Martin Timmerman

922 Benchmarking the Performance of Microsoft Hyper-V server, VMware ESXi and Xen Hypervisors 1 Hasan Fayyad-Kazan, 2 Luc Perneel, 3 Martin Timmerman 1 PhD Candidate, Department of Electronics and Informatics, Vrije Universiteit Brussel, Pleinlaan 21050 Brussels, Belgium 2 PhD Candidate, Department of Electronics and Informatics, Vrije Universiteit Brussel, Pleinlaan 21050 Brussels, Belgium Pro...

2009
A. CHAKRABARTY

Naturally occurring radioactive materials (NORMS) and fallout 137Cs were estimated in surface soils from the highly mineralized Singhbhum region of Eastern India. The activity concentrations varied from 50.67-109.14 Bq/kg (238U), 48.12142.55 Bq/kg (226Ra), 28.73-89.78 Bq/kg (232Th), 494.84-1121.36 Bq/kg (40K) and 1.8-7.48 Bq/kg (137Cs). Correlation between radionuclides was studied. 232Th/238U ...

Background: The activity concentrations of natural radionuclides in soil around a coal-fired thermal power plant of northwest China were investigated for assessing the radioactivity level. Materials and Methods: Soil samples were collected around the coal-fired thermal power plant and their radioactivity levels were determined using gamma ray spectrometry. Radiation hazards were assessed by rad...

2013
Hasan Fayyad-Kazan Luc Perneel Martin Timmerman

719 Full and Para-Virtualization with Xen: A Performance Comparison 1 Hasan Fayyad-Kazan, 2 Luc Perneel, 3 Martin Timmerman 1 PhD Candidate, Department of Electronics and Informatics, Vrije Universiteit Brussel, Pleinlaan 21050 Brussel, Belgium 2 PhD Candidate, Department of Electronics and Informatics, Vrije Universiteit Brussel, Pleinlaan 21050 Brussel, Belgium 3 Professor, Department of Elec...

2016
S. A. Shimboyo J. A. Oyedele S. S. Sitoka

Soil samples from three major towns and a holiday settlement in uranium-rich western Namibia have been analysed using a HPGe detector for radioactivity due to 238U, 232Th and 40K. The average activity concentrations of the radionuclides in the towns and settlement vary from a low of 18.6 ± 4.6 to a high of 69.6 ± 26.3 Bq kg−1 for 238U, 23.8 ± 8.4 to 91.1 ± 41.0 Bq kg−1 for 232Th and 460.3 ± 76....

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