Fallout material from an underground thermonuclear detonation was analyzed to determine the presence of several longer lived radionuclides. The following radionuclides were identified: Zr95-Nb95, Rul03, Rul06Rhl06, 1131, Csl37-Bal37, Bal40-Lal4O, Cel4l, Cel44-Prl44, Sc46. Mn54, Y88, Rhl02, W181., W185, and W188-ReI88. Radiotungsten contributed the major fraction of the total activity. In suspen...

The Great Lakes basin is of radiologic interest due to the large population within its boundaries that may be exposed to various sources of ionizing radiation. Specific radionuclides of interest in the basin arising from natural and artificial sources include 3H, 14C, 90Sr, 129I, 131I, 137Cs, 222Rn, 226Ra, 235U, 238U, 239Pu, and 241Am. The greatest contribution to total radiation exposure is th...

background: a field study on the transfer of primordial radionuclides 238u, 232th, 40k and fallout radionuclides 210po in different plant species in tropical forest of western ghats environment is presented. material and methods: the top storey, second storey, shrubs and epiphytic plant species were chosen and concentration of these radionuclides in plant and soil were measured by employing gam...

introduction natural and man made radioactive sources exist in our environment they can enter into our food chains. one of these is the soil-mushroom-human chain. high level doses of natural radiation can cause hazards to humans. materials and methods samples of agaricus bisporus cultivated edible mushroom in tehran province- iran were collected from 7 farms. specific activity of 226ra, 228ra, ...

Distributions of primordial radionuclides in soil and vegetables were investigated using high-purity germanium gamma-ray spectrometry. Gamma-ray spectrometry is one of the most accepted and widely used techniques for the detection and analysis of radioactive materials for a wide range of activity. Important properties of the employed gamma-ray detector were also determined to ensure the accurac...

There has been recent and growing interest in applying Cerenkov radiation (CR) for biological applications. Knowledge of the production efficiency and other characteristics of the CR produced by various radionuclides would help in accessing the feasibility of proposed applications and guide the choice of radionuclides. To generate this information we developed models of CR production efficiency...

Soils contaminated with radionuclides, particularly 137Cs and 90Sr, pose a long-term radiation hazard to human health through exposure via the foodchain and other pathways. Remediation of radionuclide-contaminated soils has become increasingly important. Removal of the contaminated surface soil (often up to 40 cm) or immobilization of radionuclides in soils by applying mineral and chemical amen...

The feasibility of disrupting a tumor's vascular structure with various radiation types and radionuclides is investigated. Calculated absorbed dose profiles for photons and (4)He ions suggest that low-energy beta-gamma and alpha emitting radionuclides can deposit sufficient absorbed dose to disrupt a tumor's vascular structure while minimizing the dose outside the blood vessel. Candidate radion...

background: a few elements of soil are radioactive. soil can transfer radionuclide into plants feeding human. sometimes their   levels are as high as to be concern of human healthy. rice has an important share for iranian foods especially in north of iran. therefore we decided to obtain radionuclides concentration emitting g rays in lahijan city (northern iran) rice fields using g spectroscopy....

The paper presents results of a comprehensive radiation survey conducted in 2019 six districts the eastern part Orenburg region 37 settlements with previously found elevated levels activity concentration natural radionuclides tap water from groundwater sources drinking supply. included measurements indoor radon concentrations and EEC residential public buildings, as well ambient dose equivalent...