Specific species-unspecific effects of low-radiation doses were studied. These effects are fundamentally different from stochastic effects. They have a mass character and full appearance at low doses for the species. The characteristic manifestation of the studied type of effect is a steady increase in the probability of cell death. Earlier in the model experiments on the crustacean Daphnia magna it was shown that the studied type of damage at low doses (0.1, 1 and 20 Gy, LD50/30 = 100 Gy) can develop a dose-independent increased mortality of irradiated daphnids. The present study shows that the studied type of effect can lead to reduced life expectancy of daphnids at a lowest dose of 0.1 Gy. Owing to the fact that the studied effect is observed at organism level, it is assumed that it could affect the life expectancy in mammals (including humans) even at relatively low doses of radiation.
- Inderscience Publishers
- Special effects of low doses and lifespan of irradiated daphnids
Italy - Cans, radiators and cables recycling - Case Study
Customer: TECNOMETAL S.r.l.Country: ItalyMachinery: LINE FOR CANS, RADIATORS AND CABLES’ RECYCLINGGuidetti line, composed by PMG1200 electric pre-shredder, magnetic overbelt, granulator 950, dosing conveyor with zig-zag, Turbo625/4 and separator Robi71, complete with anti-explosion filter 16000 m³, with production from 800 to 1200 kg/h, based on the material processed. Its versatility has no equal.
Comparison of ultraviolet light emitting diodes with traditional UV for greywater disinfection
The current technological status of ultraviolet light emitting diodes (UV-LEDs) has reached a point where small-scale ultraviolet (UV) water disinfection applications, that is, for greywater reuse appear increasingly promising. This study compares the germicidal and economical aspects of UV-LEDs with traditional UV. Pure cultures and environmental greywater samples were exposed to different radiation doses from both UV sources with the germicidal effect comparative at equivalent doses. The impact of particle size...
Sensitivity analysis of the modelled deposition of 137 Cs on the Japanese land following the ...
Dispersion of radioactive material released to the atmosphere from the Fukushima Daiichi Nuclear Power Plant accident in Japan was modelled to assist the French Government in effectively providing public health advice to its citizens in Japan. It required estimation of radiation doses based on realistic scenarios and atmospheric dispersion modelling. In this paper, sensitivity studies are conducted to measure the influence of several parameters on the predicted contaminated zone. Priority is given to ground...
Radiation dosage case study
The Oak Ridge Associated Universities (ORAU) Team Dose Reconstruction Project assists the US National Institute for Occupational Safety and Health by reconstructing the radiation doses received by workers at various Department of Energy and Atomic Weapons Employer facilities. This work involves personal interviews with claimants, retrieval and validation of individual monitoring data, documentation of exposure conditions in site profile documents, and preparation of individual dose reconstruction reports.ORAU...
210 Pb in marine salt consumed by the inhabitants of Recife, Brazil
210 Pb is widely distributed in the marine environment. The aim of this research, therefore, was to determine 210 Pb concentrations in marine salt consumed by the population of Recife and calculate the ingestion dose of 210 Pb due to marine salt consumption. The ion exchange resin method was used. The concentration of 210 Pb varied from 4 to 365 Bq kg –1 in fresh weight. The estimated ingestion dose of 210 Pb due to consumption of marine salt in the population of Recife was 1.2 Sv, at least three orders of...