نتایج جستجو برای: natural radionuclide

تعداد نتایج: 524775  

2017
Nan Hu Dexin Ding Guangyue Li

Phytoremediation of radioactive waste is a process that uses plants to remove, transfer, or immobilize radionuclides from the contaminated soil, sediment, sludge, or water, and it is a useful method for treating large-scale low-level radionuclide contamination. However, there have not been established criteria which can be utilized to screen out suitable plant species that are capable of remedi...

M. Naseri, V. Changizi, Z. Jafarpoor,

Background: The sources of radioactivity in the environment have natural, terrestrial and extraterrestrial, and anthropogenic origins. Plants may get radioactive nuclides in two ways: (i) by the deposition of radioactive fallout, (ii) by absorption from the soil. Materials and Methods: The Concentrations of the natural radionuclides (226Ra, 228Ra, 40K) and the artificial radionuclide (...

Journal: :iranian journal of nuclear medicine 0
sara vosoughi nuclear science and technology research institute (nstri), tehran, iran simindokht shirvani-arani nuclear science and technology research institute (nstri), tehran, iran ali bahrami-samani nuclear science and technology research institute (nstri), tehran, iran nafiseh salek nuclear science and technology research institute (nstri), tehran, iran amir reza jalilian nuclear science and technology research institute (nstri), tehran, iran

introduction:holmium-166 radionuclide is one of the most effective radionuclides used for targeted therapy with theranostic properties. one method to produce this radioisotope is via the decay of its parent (indirect method). in this study applicability of extraction chromatography (exc) for separation of no carrier added 166ho from neutron-irradiated natural dysprosium target followed by quali...

Journal: :iranian journal of radiation research 0
v. changizi department of technology of radiology and radiotherapy, allied medical sciences school, tehran university of medical sciences, tehran, iran z. jafarpoor science and research branch, islamic azad university, tehran, iran m. naseri institute of applied physics, tehran, iran

background: the sources of radioactivity in the environment have natural, terrestrial and extraterrestrial, and anthropogenic origins. plants may get radioactive nuclides in two ways: (i) by the deposition of radioactive fallout, (ii) by absorption from the soil. materials and methods: the concentrations of the natural radionuclides (226ra, 228ra, 40k) and the artificial radionuclide (137cs) in...

Ali Bahrami-Samani Amir Reza Jalilian, Nafiseh Salek, Sara Vosoughi Simindokht Shirvani-Arani,

Introduction:Holmium-166 radionuclide is one of the most effective radionuclides used for targeted therapy with theranostic properties. One method to produce this radioisotope is via the decay of its parent (indirect method). In this study applicability of extraction chromatography (EXC) for separation of no carrier added 166Ho from neutron-irradiated natura...

Journal: :Journal of environmental radioactivity 2017
P H Santschi C Xu S Zhang K A Schwehr P Lin C M Yeager D I Kaplan

Among the key environmental factors influencing the fate and transport of radionuclides in the environment is natural organic matter (NOM). While this has been known for decades, there still remains great uncertainty in predicting NOM-radionuclide interactions because of lack of understanding of radionuclide interactions with the specific organic moieties within NOM. Furthermore, radionuclide-N...

2009
Che Doering

Beryllium-7 is a cosmogenic radionuclide produced in the atmosphere through the spallation of nitrogen and oxygen nuclei by cosmic-ray-produced neutrons and protons. It is carried in the atmosphere attached to aerosols and is deposited on land and ocean surfaces by wet and dry deposition processes. Beryllium-7 decays by electron capture to lithium-7 and has a half-life of approximately 53 days....

2011
Michael Schubert Nils Michelsen Randolf Rausch Mohammed Al-Saud

In many parts of the world, major regional drinking water resources are represented by large-scale sandstone aquifers. In particular in arid climate zones, society depends on the water from such aquifer systems because of the lack of alternative renewable drinking water resources. The often fossil (and hence non-renewable) groundwaters of deep sandstone aquifer systems are not likely to show an...

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