نتایج جستجو برای: the radionuclides 226ra
تعداد نتایج: 16053524 فیلتر نتایج به سال:
The concentration of anthropogenic 137Cs and naturally occurring 226Ra, 232Th 40K radionuclides were measured in the undisturbed soil at 0-5 cm depth water collected from natural reservoir Terrene Goainghat Jaintapur area Sylhet district Bangladesh near Indian border by gamma ray spectrometry, with aim evaluating environmental radiation hazard. activity was observed all samples, ranging 5.22 4 ...
Radionuclides and heavy metals/metalloids content in soils shore sediments of Al-Negila area (Matrouh, Egypt) were determined to assess the associated environmental risks. A total 46 soil sediment samples collected analysed for natural man-made radionuclides (238U series, 232Th 40K 137Cs) (Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, Mn, Ni, Si, Sr, Zn, Hg). Within study area, are mainly calcareous with ...
The concentrations of 29 elements in the soft tissues and 24 shells mussels (Mytilus galloprovincialis) collected one selected recreational two relatively polluted zones were determined are presented. high levels from a zone harbor (Kamyshovaya Bay) could be associated with phytoplankton, terrigenous matter anthropogenic sources, but did not harm mussel population, according to calculated avera...
Medicinal plants are very useful for humans with the various molecules and vitamins they contain. Most of that grow spontaneously in nature were taken into agricultural production practices after their healing properties discovered. The use pure active ingredients obtained from is quite common. These effective compounds also used by pharmaceutical industry preparation modern drug formulations. ...
The activity concentrations of the natural radionuclides namely 238Ra, 232Th and 40K are measured for soil samples collected from different locations of Faridkot and Mansa districts of Punjab. HPGe detector, based on high-resolution gamma spectrometry system is used for the measurement of activity concentration. The range of activity concentrations of 226Ra, 232Th and 40K in the soil from the s...
BACKGROUND Ramsar, a city of Iran located on the coast of the Caspian Sea, has been considered to be enormously important due to its high natural radioactivity levels. People living in High Level Natural Radiation Areas (HLNRAs) have been exposed by several sources, one of which could be foodstuff. However, many studies have been carried out to measure the environmental radioactivity in Ramsar,...
In this research, alpha-emitter concentrations of 222Rn, 226Ra, and 238U in Iranian, Turkish, Egyptian, Saudi Arabian, Iraqi canned cheeses that are available markets were measured using the CR-39 detector. Also, health risk parameters associated with ingestion radionuclides, such as annual average internal effective dose (AAIED) an excess cancer fatality per million persons (RECFPMP), calculat...
A natural radioactivity in thermal water was investigated based on 19 selected waters from Poland. The analysed results show that the radionuclides’ concentrations study vary over a wide range. temperature of varies above 20 °C to 80 °C. are characterised by different mineralisation, chemical compositions, and belong hydrochemical types. There is good correlation between depths aquifer formatio...
Background: The Patterson-Parker table was created in 1934 to determine mg-hr required to deliver the prescribed dose to the treatment area. These tables were created using the dosimetric data for 226Ra that was determined in air and were utilized for dose calculations around implants with Ra-equivalent radionuclides such as 137Cs and 192Ir. Therefore, the differences of the tissue attenuation ...
The present study was carried out to determine the activity concentrations of 40K, 226Ra and 232Th in surface soil samples collected from twenty five different locations of Industrial Yanbu city located in western region of Saudi Arabia, using a NaI(Tl) gamma-ray spectrometer. The activity concentrations of 226Ra, 232Th and 40K in the soil samples from the studied area ranged from 25.21 Bq kg t...
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