Study of K-40, Ra-226, Ra-228 and Ra-224 activity concentrations in some seasoning and nuts obtained in Rio de Janeiro city, Brazil
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چکیده
منابع مشابه
Measurement of exposure to radionuclides (40-K, 226-Ra, and 232-Th) in the oil and gas drilling industry
Background: Naturally occurring radioactivity is a root cause of human exposure to harmful radiation. The occupational exposure hazard due to natural radionuclides occurring in drilling wastes is especially important in this regard. In this study the concentration of radionuclides namely 232Th, 226Ra and 40K were assessed in soil samples that were taken from various oil drilling areas. Methodol...
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The concentrations of naturally occurring radionuclides of Ra and Ra were determined in the groundwater samples in three areas near Riyadh city in Saudi Arabia. The waters of these areas are supplied for the city consumption. A total of thirty water samples of the three areas were analyzed for Ra and Ra. The concentration of Ra was found in the range from 2.1 – 6.3, 7.2 14.1 and 16.7 – 33.5 mBq...
متن کاملRa-226 SOURCES IN METAL MATRICES: GAS PRESSURE
The process of gas generation for radium sources embedded in metal matrices (or metal capsules) is described in order to obtain the conditions of safe immobilisation of radium sources in metal matrices. For this purpose a simple model describing immobilisation of sources in a metal housing is proposed. Both helium and radon generation is considered near a radium source. Partial pressures of hel...
متن کاملKidney disease in RA patients: prevalence and implication on RA-related drugs management: the MATRIX study.
OBJECTIVES The prevalence of kidney disease (KD) indicators together with the profile of RA drugs prescribed in RA patients was investigated in the MATRIX study (MeThotreXate And Renal Insufficiency). METHODS Renal function (RF) was assessed using Cockcroft-Gault (CG) and abbreviated Modification of Diet in Renal Disease (aMDRD) study formulae. RESULTS Serum creatinine (SCr) was normal in 8...
متن کاملHypoxia in RA
Introduction Maintaining oxygen homeostasis is of vital importance for the survival and development of mammalian cells. Hypoxia (below-normal levels of oxygen in air, blood and tissue) can potentially lead to cellular dysfunction and ultimately cell death and is a feature of many pathological conditions. Understanding how reduced oxygen levels may contribute to or even promote disease is a sign...
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ژورنال
عنوان ژورنال: Food Science and Technology
سال: 2019
ISSN: 1678-457X,0101-2061
DOI: 10.1590/fst.27717