نتایج جستجو برای: u3o8

تعداد نتایج: 69  

2008
R. M. Tripathi S. K. Sahoo V. N. Jha Rajesh Kumar A. K. Shukla V. D. Puranik

Mining and ore processing activities are associated with changes in the surrounding environment and may pose a risk to human health, if adequate safety measures are not taken. The uranium ore generally varies worldwide between 0.03 – 3% U3O8, except for a few deposits where higher levels of uranium is reported. More than 95% of the ore is converted into waste material called “tailings”. Around ...

Journal: :Journal of Nuclear Science and Technology 1970

Journal: :Journal of Raman Spectroscopy 2022

Raman spectroscopy is one of the most useful techniques for studying structure UO2 and changes due to specific defects caused by doping, in stoichiometry, irradiation, or heating under oxidizing conditions. In this paper, we illustrate several aspects application study UO2, including use wavelength-dependent excitation (455, 532, 785 nm) assess effects doping (Nd, Th, Zr), ion situ oxidation (U...

Journal: :Journal of Nuclear Science and Technology 1995

2001
Nobuaki Sato Yoshikatsu Tochigi Toshiki Fukui Takeo Fujino

Fly ash is generated from LWR nuclear power plant as a low-level waste, which is contaminated with a small amount of radioactive materials, composed mainly of uranium oxide. The constituents of the fly ash are similar to those of the ore; the major components of the ash are oxides of silicon, aluminum, sodium, magnesium, zinc, iron sodium and uranium. In this study, removal of uranium from the ...

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