نتایج جستجو برای: dose rate constant
تعداد نتایج: 1402387 فیلتر نتایج به سال:
in this study, the stability of trinitroglycerin (tng) in polyethylene (peg) 400 was investigated according to arrhenius approach. the reaction rate constant (k) for the thermal disintegration of tng in peg 400 at various temperatures was counted based on the percents of remaining tng at different intervals of time at a specific temperature. the results showed that “k” at 40, 50, 60, 70, 80 and...
*Corresponding author: Dr. Mohammad Amin Mosleh-Shirazi, Department of Radiotherapy and Oncology, Shiraz University of Medical Sciences, Shiraz, Iran. Fax: +98 711 6474320 E-mail: [email protected] Background: The dose rate distribution delivered by a low dose rate 137Cs pellet source, a spherical source used within the source trains of the Selectron gynecological brachytherapy system, was inv...
the kinetics and mechanism of the reaction of 5-nitro-1h-benzo[d] imidazole to produce 6-nitro-1h-benzo[d] imidazole was studied by employing hybrid meta-density functional theory. mpwblk/6-31+g** level calculations were carried out to obtain energies and optimize the geometries of all stationary points along the pes, and determine the harmonic vibrational frequencies. two transition states (ts...
introduction: all of the people worldwide are exposed to low levels of radiation. cancer induction and genetic disorders are among the hazards of low level exposure. in some cases, radiation close to hot springs is higher than normal areas due to a high concentration and the decay products of ra-226. given the use of hot springs by the general public because of their therapeutic p...
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