نتایج جستجو برای: absorption dose stable iodine mcnp mird

تعداد نتایج: 704113  

Journal: :Water research 2015
Mariya Ikari Yoshihiko Matsui Yuta Suzuki Taku Matsushita Nobutaka Shirasaki

Chlorine oxidation followed by treatment with activated carbon was studied as a possible method for removing radioactive iodine from water. Chlorination time, chlorine dose, the presence of natural organic matter (NOM), the presence of bromide ion (Br⁻), and carbon particle size strongly affected iodine removal. Treatment with superfine powdered activated carbon (SPAC) after 10-min oxidation wi...

2013
George Eastman

The use of radioactive iodine as an indicator in thyroid physiology has been described by Hertz, Roberts and Evans (1) and by Hertz, Roberts, Means and Evans (2, 3). Hamilton and Soley (4) have published data obtained by the use of radioactive iodine on goiter patients of several types. We have administered radioactive iodine (mainly the 8-day isotope I's1), obtained by bombarding tellurium wit...

Background: In neutron interaction with matter and reduction of neutron energy due to multiple scatterings to the thermal energy range, increasing the probability of thermal neutron capture by neutron captures makes dose enhancement in the tumors loaded with these materials. Objective: The purpose of this study is to evaluate dose distribution in the presence of 10B, 157Gd and 33S neutron...

2017
Lena Jönsson Enrico Fermi

Radionuclide therapy requires patient-specific planning of the absorbed dose to target volumes, in most cases tumours, in order to achieve an expected biological effect, taking into account that the absorbed doses to normal organs and tissues should be kept as low as reasonably achievable. Therefore, the calculation of absorbed doses has to be as accurate as possible. The accuracy depends on th...

Journal: :Food & nutrition research 2015
Gisken Trøan Lisbeth Dahl Helle Margrete Meltzer Marianne Hope Abel Ulf Geir Indahl Anna Haug Egil Prestløkken

BACKGROUND Dairy products account for approximately 60% of the iodine intake in the Norwegian population. The iodine concentration in cow's milk varies considerably, depending on feeding practices, season, and amount of iodine and rapeseed products in cow fodder. The variation in iodine in milk affects the risk of iodine deficiency or excess in the population. OBJECTIVE The first goal of this...

Introduction: Nuclear accidents release large quantities of radioactive materials into the environment. Iodine-131 and cesium-137 are two radionuclides released during nuclear accident, which can pose the greatest cancer risks. These radionuclides can be moved to other areas through rain and wind. The aim of this study was to develop efficient and economical biological...

Journal: :iranian journal of radiation research 0
m. jadidi department of medical physics, school of medicine, semnan university of medical sciences, semnan, iran a.a. taherian research center and department of physiology, school of medicine, semnan university of medical sciences, semnan, iran m. mahdinejad department of medical physics, school of medicine, semnan university of medical sciences, semnan, iran

background: ionizing radiation irradiated from iodine-131 can induce dna damage and cell death. the cellular dna damage is the cause of mutation and cancer. the micronucleus assay in polychromatic erythrocytes was applied to assess the radio-protective effect of turmeric extract on genotoxic potential of iodine therapy. materials and methods: thirty six male albino rats were randomly divided in...

Journal: :The Journal of toxicological sciences 2002
Yoshitaka Higa Atsushi Ohkubo Shunichi Kitajima Matuko Moriyasu Kimio Kariya

The effects of kojic acid (KA) on thyroidal function were studied by single-dose administration in rats and in cultured rat thyroid cells (FRTL-5 cells). In rats receiving a single dose of 1,000 mg/kg KA orally, the 125I uptake from blood into the thyroid gland was significantly lower than that of the control group from 30 min to 24 hr after administration. The 125I organification activity of t...

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