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Добірка наукової літератури з теми "137Cs-tracer"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "137Cs-tracer"

Lai, Z., C. Chen, R. Beardsley, et al. "Initial Spread of <sup>137</sup>Cs over the shelf of Japan: a study using the high-resolution global-coastal nesting ocean model." Biogeosciences Discussions 10, no. 2 (2013): 1929–55. http://dx.doi.org/10.5194/bgd-10-1929-2013.

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Abstract. The 2011 Tohoku earthquake caused radionuclide 137Cs be directly released into the ocean from the Fukushima Dai-ichi nuclear power plants. A high-resolution global-coastal nesting ocean model was established to simulate the initial spread of 137Cs as conservative tracer over the shelf of Japan after the accident. The major advantage in the current model system is to use unstructured grids to resolve the power plant and the coastal geometry with a grid resolution much higher than that used in previous modeling experiments. Therefore, it gives us an opportunity to examine the necessity

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Kristiansen, N. I., A. Stohl, D. J. L. Olivié, et al. "Evaluation of observed and modelled aerosol lifetimes using radioactive tracers of opportunity and an ensemble of 19 global models." Atmospheric Chemistry and Physics 16, no. 5 (2016): 3525–61. http://dx.doi.org/10.5194/acp-16-3525-2016.

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Abstract. Aerosols have important impacts on air quality and climate, but the processes affecting their removal from the atmosphere are not fully understood and are poorly constrained by observations. This makes modelled aerosol lifetimes uncertain. In this study, we make use of an observational constraint on aerosol lifetimes provided by radionuclide measurements and investigate the causes of differences within a set of global models. During the Fukushima Dai-Ichi nuclear power plant accident of March 2011, the radioactive isotopes cesium-137 (137Cs) and xenon-133 (133Xe) were released in lar

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van der Perk, Marcel, Ondrej Slávik, and Emil Fulajtár. "Assessment of Spatial Variation of Cesium‐137 in Small Catchments." Journal of Environmental Quality 31, no. 6 (2002): 1930–39. http://dx.doi.org/10.2134/jeq2002.1930a.

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ABSTRACTSurface contamination by bomb‐derived and Chernobyl‐derived 137Cs has been subject to changes due to physical decay and lateral transport of contaminated soil particles, which have resulted in an ongoing transfer of radionuclides from terrestrial ecosystems to surface water, river bed sediments, and flood plains. Knowledge of the different sources of spatial variation of 137Cs is particularly essential for estimating 137Cs transfer to fluvial systems and for successfully applying 137Cs as an environmental tracer in soil erosion studies. This study combined a straightforward sediment re

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Nenadovic, Snezana, Milos Nenadovic, Ivana Vukanac, Aleksandar Djordjevic, Slavoljub Dragicevic, and Milutin Ljesevic. "Vertical distribution of 137Cs in cultivated and undisturbed areas." Nuclear Technology and Radiation Protection 25, no. 1 (2010): 30–36. http://dx.doi.org/10.2298/ntrp1001030n.

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This paper introduces the distribution background and unique characteristics of 137Cs in cultivated and undisturbed areas. The samples were taken from three measuring points of the depth of 1 m. We examined all visible horizons and determined their classifications. There were four horizons in one profile. All four horizons had a different zone thickness. 137Cs is an artificial radionuclide that has been produced primarily as a result of atmospheric thermonuclear weapon tests since the 1950. Also, the great amount of 137Cs (~85 PBq) was released in the atmosphere during the Chernobyl accident.

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Kristiansen, N. I., A. Stohl, D. J. L. Olivié, et al. "Evaluation of observed and modelled aerosol lifetimes using radioactive tracers of opportunity and an ensemble of 19 global models." Atmospheric Chemistry and Physics Discussions 15, no. 17 (2015): 24513–85. http://dx.doi.org/10.5194/acpd-15-24513-2015.

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Tosic, Radislav, Slavoljub Dragicevic, Istvan Bikit, et al. "Estimating the soil erosion and deposition rate using 137Cs tracer method in the catchment of Drenova reservoir (B&H)." Nuclear Technology and Radiation Protection 27, no. 3 (2012): 247–53. http://dx.doi.org/10.2298/ntrp1203247t.

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There are many limitations associated with traditional approaches to estimation of soil erosion and deposition rates. Recently attention has been focused on 137Cs and successful usage of this isotope in soil erosion studies. This paper presents the results of measurements of 137Cs in soil profiles which were sampled within catchments of Drenova reservoir. The proportional model and a simplified version of the mass balance model were used to estimate the mean soil loss or deposition redistributions rates. The aim of this study is to estimate the soil erosion and deposition rates using 137Cs tra

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Leivadaros, Petros, Christos Tsabaris, Dionisis L. Patiris, et al. "Recent 137Cs Distribution in the Aegean Sea, Greece." Journal of Marine Science and Engineering 10, no. 11 (2022): 1719. http://dx.doi.org/10.3390/jmse10111719.

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Recent spatial and vertical distributions of 137Cs activity concentration in the Aegean Sea are presented almost 30 years after the Chernobyl accident. The study aims to provide the current radioactivity levels of 137Cs in the Aegean Sea and to combine the 137Cs activity concentration with typical oceanographic parameters (T, S) in order to utilize them as tracers to identify/validate the different water masses that are present in the Aegean Sea. This work was performed in the frame of the “KRIPIS” project in 2017 for continuous investigations of the deep basins from all over the Aegean Sea an

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Smith, John N., Katherine M. Ellis, and Linas R. Kilius. "129I and 137Cs tracer measurements in the Arctic Ocean." Deep Sea Research Part I: Oceanographic Research Papers 45, no. 6 (1998): 959–84. http://dx.doi.org/10.1016/s0967-0637(97)00107-6.

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Li, Jun Jie, Ding Qiang Li, and Mu Ning Zhuo. "Characterization and Evaluation of Soil Erosion in Shenzhen: Using Environmental Radionuclides." Applied Mechanics and Materials 522-524 (February 2014): 211–22. http://dx.doi.org/10.4028/www.scientific.net/amm.522-524.211.

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Nuclear tracer technology is quantitative and it has a high priority, which provides a unique method for understanding the mechanism of urban soil and water loss.137Cs +210Pbexcombination tracer was applied to study the characterization and evaluation of soil Erosion in Shenzhen. The results indicate that the following: 1)Disturbances from urbanization has greatly changed surface soil in Shenzhen.137Cs background inventory in Shenzhen range at 99 Bq/m2-653 Bq/m2. 2)210Pbexbackground inventory increase with altitude rise, which is attributed to the movement of water vapor. 3)Soil erosion in She

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Duong Duc, Thang, Bac Vuong Thu, Dung Bui Dac, et al. "Determination of recovery efficiency of ¹³⁷Cs in seawaterusing co-precipitation method." Nuclear Science and Technology 10, no. 1 (2021): 40–46. http://dx.doi.org/10.53747/jnst.v10i1.30.

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Recovery efficiency of 137Cs in seawater samples with different volumes of 40, 50, 60, 80 and 100 liters using co-precipitation method by ferrocyanide compounds has been determined. 134Cs nuclide was used as a tracer to determine recovery efficiency. The results showed that the recovery efficiency of 134Cs ranged from 92.62% to 99.26% with mean value of (95.22 ± 2.61)% for different sample volumes. Average recovery efficiency for samples with a volume of 50 liters was (95.70 ± 2.50)% and uncertainty when determining 137Cs in seawater samples were still less than 20%. Therefore, reducing the vo

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Більше джерел

Дисертації з теми "137Cs-tracer"

Kutlakhmedov, Yuriy Alekseevich, Anastasiya Georgievna Salivon, Svetlana Anatolyevna Phelovskya, Victor Vladimirovich Rodyna, Irina Valeryevna Matveeva, and Valentina Pavlovna Petrusenko. "Theory of Reliability in Radiation Ecology." Thesis, Industrial Engineering and Management Department SCE - Shamoon College of Engineering Beer Sheva (Israel), 2010. http://er.nau.edu.ua/handle/NAU/23676.

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Proceedings of the international symposium on stochastic models in reliability engineering, life science and operations management<br>For twenty years after Chernobyl catastrophe, we studied capability of plants of different kinds to store and retain the radionuclide tracer 137Cs as the measure of stability and reliability of the ecosystem biota exposed to gamma-radiation and chemical pollutants. We introduced two parameters to quantify the ecosystem reliability. First, radiocapacity is defined as the upper level of radionuclide contamination, above which the ecosystem biota species begin to m

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Sauvé, Daniel. "Measurement of 236U, 137Cs, and 129I in the Labrador and Beaufort Seas." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34501.

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The first comprehensive analysis of surface waters in the Labrador Sea for 236U was completed via Accelerator Mass Spectrometry. Through the analysis of 236U the method for AMS measurement was fine-tuned to allow for more precise results. Surface samples for the anthropogenic isotopes 137Cs and 129I were also collected along with two depth profiles of 129I. Samples were also collected in the Beaufort Sea and analyzed for the aforementioned isotopes. It was found that anthropogenic 129I from reprocessing plants is easily discernible at different concentrations among water bodies in both the La

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Частини книг з теми "137Cs-tracer"

Cahill, Richard A., and John D. Steele. "137Cs as a tracer of recent sedimentary processes in Lake Michigan." In Paleolimnology IV. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4047-5_5.

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Тези доповідей конференцій з теми "137Cs-tracer"

Basuki, Triyono, Kuninobu Inada, and Satoru Nakashima. "Examination of Cs tolerant bacteria interaction with Cs+ in aqueous solution and soil by using 137Cs tracer." In APPLICATION OF MATHEMATICS IN TECHNICAL AND NATURAL SCIENCES: 12th International On-line Conference for Promoting the Application of Mathematics in Technical and Natural Sciences - AMiTaNS’20. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0031817.

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Pottinger, M. P., and C. H. Orr. "Free-Release Monitoring Equipment in the UK Nuclear Power Industry." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4564.

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In the nuclear power industry, many techniques are used to confirm that items are suitable for free-release. These techniques usually involve monitoring of the items with at least one type of radiometric instrument, to ensure that no significant quantity of man-made radioactivity is present. These monitoring techniques depend on the stage in the clearance process, the application and the size of the article being monitored. The UK Radioactive Substances Act has a Substances of Low Activity (SoLA) exemption which allows for articles and waste that have a man-made radioactive content less than 0

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