Radionuclides: Properties, Behavior and Potential Health Effects, Jovana Nikolov
Автор: Clemens Walther; Dharmendra K. Gupta Название: Radionuclides in the Environment ISBN: 3319221701 ISBN-13(EAN): 9783319221700 Издательство: Springer Рейтинг: Цена: 18167.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book provides extensive and comprehensive information to researchers and academicians who are interested in radionuclide contamination, its sources and environmental impact. It is also useful for graduate and undergraduate students specializing in radioactive-waste disposal and its impact on natural as well as manmade environments. A number of sites are affected by large legacies of waste from the mining and processing of radioactive minerals. Over recent decades, several hundred radioactive isotopes (radioisotopes) of natural elements have been produced artificially, including 90Sr, 137Cs and 131I. Several other anthropogenic radioactive elements have also been produced in large quantities, for example technetium, neptunium, plutonium and americium, although plutonium does occur naturally in trace amounts in uranium ores. The deposition of radionuclides on vegetation and soil, as well as the uptake from polluted aquifers (root uptake or irrigation) are the initial point for their transfer into the terrestrial environment and into food chains. There are two principal deposition processes for the removal of pollutants from the atmosphere: dry deposition is the direct transfer through absorption of gases and particles by natural surfaces, such as vegetation, whereas showery or wet deposition is the transport of a substance from the atmosphere to the ground by snow, hail or rain. Once deposited on any vegetation, radionuclides are removed from plants by the airstre am and rain, either through percolation or by cuticular scratch. The increase in biomass during plant growth does not cause a loss of activity, but it does lead to a decrease in activity concentration due to effective dilution. There is also systemic transport (translocation) of radionuclides within the plant subsequent to foliar uptake, leading the transfer of chemical components to other parts of the plant that have not been contaminated directly.
Автор: Marina Marinova; Vladimir P. Perelygin; Peter Vate Название: Radionuclides and Heavy Metals in Environment ISBN: 1402000588 ISBN-13(EAN): 9781402000584 Издательство: Springer Рейтинг: Цена: 30606.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The environment contains an abundance of man-made and natural radionuclides, as well as polluting heavy metals. Their accumulation and the inevitable adverse impact on human health is a matter for serious international concern. This book reviews such modern environmental problems.
Описание: This publication describes and summarizes the work of the MODARIA (modelling and data for radiological impact assessments) Programme Working Group 10. MODARIA was set up to continue the IAEA's activities in the field of testing, comparing and developing guidance on the application of models to assess radiation exposures to humans and radiological impacts on the environment. Different aspects of the MODARIA programme were addressed by ten working groups. The current publication presents the work undertaken by Working Group 10 on the modelling of marine dispersion and transfer of radionuclides accidentally released from land-based facilities. Two marine dispersion scenarios were studied. These scenarios simulated dispersion of radionuclides in the Baltic Sea following the Chernobyl accident, and dispersion in the Pacific Ocean following the Fukushima Daiichi nuclear power plant accident. The publication details some general conclusions and presents a comparison of model performance when applied to the above scenarios. The difficulties of developing operative modelling systems for supporting decision making in cases of emergencies in highly dynamic environments are highlighted.
Автор: Helus, Frank Название: Radionuclides Production ISBN: 0367232286 ISBN-13(EAN): 9780367232283 Издательство: Taylor&Francis Рейтинг: Цена: 22968.00 р. Наличие на складе: Поставка под заказ.
Описание: "ANOTHER galaxy, another time." This was the opening line for Star Wars: From the Adventures of Luke Skywalker, first published in December 1976, six months before the movie release of Star Wars: A New Hope. This novelization was ghostwritten by Alan Dean Foster but credited to George Lucas. The book title would later be republished under the title Star Wars: A New Hope. This double-sided tee has the first edition cover art by artist Ralph McQuarrie on the front and the book description on the back. Product Details: 100% Cotton fitted tee, Distressed, softened print, colour: black. Size: Medium, Length: 28 1/2 inches, Chest: 39 1/2 inches. Each purchase helps to fund literacy programs and book donations to communities in need.
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