Gamma Ray Articles & Analysis
7 articles found
Radioactive isotopes undergo radioactive decay and emit gamma rays and sub-atomic particles. If all isotopes of an element are radioactive, such as uranium, radium and radon. ...
In combination with imaging devices which register the gamma rays emitted from within, they can study the dynamic processes taking place in various parts of the body. ...
Radiation hormesis was performed in six patients (four patients with malignant diseases and two patients with benign diseases) in the experimental room where they could be exposed to a low level of direct gamma ray and inhale radon gas (radon-222). No significant side-effect was found in any patient during the clinical course. ...
The influence of repeated 0.5 Gy whole-body gamma-ray irradiation on tumour metastasis was examined from the standpoint of tumour invasion in the B16 melanoma pulmonary metastasis model in mice. We confirmed that 0.5 Gy whole-body gamma-ray irradiation (four doses over two weeks) significantly suppressed colony formation in the ...
Activity concentrations of 226Ra, 232Th and 40K in soil, sediment and rock were measured by Na(I) Tl gamma-ray spectrometry. To assess the radiological hazards of the natural radioactivity in the samples, absorbed gamma-dose rates in air, radium equivalent activity, representative level index, external hazard index and internal hazard index ...
The helicopter systems are used for radiation measurements closer to the natural background levels.Keywords: aerial radiological survey, gamma ray detection, nuclear analysis techniques, data collection, aerial measuring systems, radiological emergency, emergency management, fixed-wing aircraft, helicopters, radioactivity, radiation measurements, emergency ...
We report here our observations on the low-dose (1.25, 2.50, 5.0 and 10.0 cGy) effects of gamma rays on DNA damage in human peripheral blood leukocytes. In a separate experiment on dose-rate, human blood samples were exposed to a total dose of 10.0 cGy at different dose-rates (0.46, 0.93 and 1.85 cGy/ min) of gamma rays using an ...