Gamma Dose Articles & Analysis: Older
7 articles found
Removal of MS2 RNA and infectious MS2 particles was 1.2 and 1.6 log10-units, respectively. Virus reduction by UV and gamma irradiation was determined in laboratory-scale experiments. The reduction of MS2 RNA based on qRT–PCR data was negligible. Reduction of infectious MS2 particles was estimated at 3.0–3.6 log10-units (UV dose up to 400 or 800 ...
A large number of 41Ar measurements from a network of environmental gamma detectors are used to evaluate the model under a range of atmospheric stability conditions within the complex terrain area. ...
A number of rats were divided into four groups: (1) control group; (2) group that was treated with intraperitonial injection of melatonin; (3) group that got melatonin 30 min prior to cervical spinal cord gamma irradiation at a dose of 22 Gy; and (4) group that was given an intraperitonial injection of vehicle and the spinal cord radiation. ...
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 lungs. ...
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 ...
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 ...
The effect of low-dose gamma-irradiation (0.1 or 0.2 Gy with a dose rate of 0.125 Gy/min) of mice on the spontaneous and high-dose radiation-induced level of cytogenetic damage during ageing of animals was studied using the micronucleus test. It was shown that a single low dose of gamma-radiation ...