Migration - Seasonal, Habitat, Survival: There are many ecological implications of migration. The food resources of some regions would not be adequately exploited without moving populations. The sequence of migratory movement is closely integrated in the annual cycle of ecosystems characterized by productivity fluctuations. Migratory …
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The directive recommends that soil lead levels less than 400 mg/kg are generally safe for residential use. Above that level, the document suggests collecting data and modeling blood-lead levels with the IEUBK model. For the purposes of screening, therefore, 400 mg/kg is recommended for residential soils.
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The vertical migration of 90 Sr and 117 Cs produced by the explosion of the atomic bomb in 1945 was investigated in an unsaturated soil layer in the Nishiyama area of Nagasaki. The in situ migration rates of 90 Sr and 137 Cs were estimated to be 4.2 mm yr −1 and 1.0 mm yr −1, respectively, when the rate of movement of soil water was 2500 …
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Cesium Geocoding to ArcGIS Geocoding. This example shows how to disable the Cesium Geocoder and add ArcGIS geocoding to your application. Disable the Cesium geocoder in the viewer.. Create a function that uses the ArcGIS REST JS geocode function to make a request to the geocoding service.. Create an HTML input and add an event listener to …
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To understand the ecological effects of the Chernobyl reactor accident, we investigated radiocesium ([sup 137]Cs) levels in Eurasian woodcock (Scolopax rusticola), earthworms (Lambricidae), litter (dead organic materials lying on the ground), humus (beneath litter 2 cm deep), and mineral soil samples (3-6 cm deep) from a heavily …
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Radioactive cesium-137 (137 Cs) is one of the long-lived fission products (T 1/2 = 30.07y), ... Cs can migrate over a long distance through soil, rivers, and groundwater leading to serious ecological environment contamination due to low tendency to form complexes with ligands and high solubility in water ...
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The remediation technologies screening matrix is a user-friendly tool to screen for technologies for a remediation project. The matrix allows you to screen through 64 in situ and ex situ technologies for either soil or groundwater remediation. Variables used in screening include contaminants, development status, overall cost, and cleanup time.
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Request PDF | Migration processes of radioactive cesium in the Fukushima nearshore area: Impacts of riverine input and resuspension | It is essential to evaluate …
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Students of migration need to focus more on migration as a behavioral, ecological, and evolutionary phenomenon rather than as an event that occurs in a particular taxon. The use of movement to exploit separated and ephemeral habitats and resources transcends particular species and taxonomic groups, and its investigation should do …
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In order to evaluate migration of 137 Cs adsorbed on fine soil particles in natural aerated soil layers, filtration constants of fine soil particles between soil and pore water were determined by the inverse analysis of the results of a large scale indoor migration test (STEM) using the soil layer samples collected from the natural aerated …
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erials as Radiological Dispersal Device or dirty bomb is reviewed. Due to the unique characteristics of the cesium chloride (137CsCl) used in irradiators, it is especially susceptible to be used as a dirty bombs. Mount Sinai originally had four of such irradiators. To reduce and eventually remove the risk of malicious use of radioactive materials, …
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Large pelagic predators play important roles in oceanic ecosystems, and may migrate vast distances to utilize resources in different marine ecoregions.
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It is unclear how DOM affects the rapid migration of Cs in soils under flowing water conditions during rainfall events. This study evaluated the effects of DOM on Cs …
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INTERNATIONAL ATOMIC ENERGY AGENCY VIENNA ISBN 92–0–114705–8 ISSN 1020–6566 The explosion on 26 April 1986 at the Chernobyl nuclear power plant and the consequent reactor fire resulted in
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@article{osti_5048425, title = {Cesium 137 transport into the Arctic Ocean through Fram Strait}, author = {Smith, J N and Ellis, K M and Jones, E P}, abstractNote = {Cesium 134 and {sup 137}Cs activities were measured in water samples collected in March-April 1981 at the Fram 3 ice station located 200 km north of Fram Strait. The …
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@article{osti_223873, title = {Storage and migration of fallout strontium-90 and cesium-137 for over 40 years in the surface soil of Nagasaki}, author = {Mahara, Yasunori}, abstractNote = {The vertical migration of {sup 90}Sr and {sup 137}Cs produced by the explosion of the atomic bomb in 1945 was investigated in an unsaturated soil layer …
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Cesium-137 Distribution Migration Cesium map Chernobyl accident abstract This paper presents theresults of measurements of 137Csin soilsin Pest County, Hungary.Weinvestigated forty five soil monoliths from monitoring locations of a countrywide Soil Information and Monitoring System(SIMS)atdepthsof0e30,30e60,60e90,90e120 and …
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A Windows based computer simulation model of the environmental fate, food-chain bioaccumulation, toxicity and ecological and human health risks of contaminants is presented. Case studies demonstrating the models application in a lake, a river and a marine fjord are discussed and results are presented illustrating the ability of the model to ...
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Cesium concentration in the soil under 10 –7 mol/L, FES is the dominating site of the soil clay minerals adsorption sites, and as the strong adsorption of adsorption sites, cesium is not easy to be desorbed from soil, migration and transformation in soil environment, when the concentration of the cesium in soil increases, FES site saturation ...
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severe decomposition. Here it is reported that cesium ions (Cs+) incorporated in perovskite lattice, with a moderate doping concentration (e.g. 5%), can function as stabilizers to efficiently interrupt such a synergistic effect between oxygen induced degradation and ion migration while retaining the high performance of perovskite solar cells.
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The U.S. Department of Energy's Office of Scientific and Technical Information
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Sophisticated modeling of the migration of sorbing radionuclides in compacted claystones is needed for supporting the safety analysis of deep geological repositories for radioactive waste, which requires robust modeling tools/codes. Here, a benchmark
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A column-flow cesium migration experiment has been conducted in support of the safety assessment program for the Waste Isolation Pilot Plant (WIPP) in Southeastern New Mexico. The column was a monolithic cylinder of Magenta dolomite obtained from a core sample drilled near the proposed WIPP site. The fluid was a Magenta equilibrated de …
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Abstract. After the accident at the Fukushima Daiichi nuclear power plant in Japan, the migration of radioactive cesium (Cs) in soils has become a crucial issue …
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It is unclear how DOM affects the rapid migration of Cs in soils under flowing water conditions during rainfall events. This study evaluated the effects of DOM on Cs migration in weathered granite soil depending on Cs adsorption sites by conducting …
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Chinese researchers focus on "ecological migration", which has some overlap but also some conceptual differences with the notion of climate migration. Based on these studies, this paper attempts to review the differentiations made by Chinese scholars between climate migration, ecological migration, and environmental migration.
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The "Caddisfly Watch" program proposes the use of larvae of the caddisfly genus Stenopsyche (Trichoptera: Stenopsychidae) to monitor the radioactive cesium (137Cs) pollution, including that of suspended solids, in river environments, as a simple method was essential for this following the Fukushima nuclear disaster in March 2011. A …
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Availability and fixation of radiocaesium in a. forest brown acid soil. Science of the Total Environment 143:183-191.. Dearing, J.A. 1992. Sediment yields and sources in a Welsh upland catchment during the past. 800 years.
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Conference: The experience of utilization of electro-migration technology for soil decontamination from cesium-137 under field conditionsThe experience of utilization of electro-migration technology for soil decontamination from cesium-137 …
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@article{osti_5339458, title = {Characterization of soil-to-plant transfer coefficients for stable cesium and strontium}, author = {Hoffman, L G and Keller, J H}, abstractNote = {Soil and vegetation samples were collected from seven counties in the United States in which commercial nuclear power reactors were sited. Samples were analyzed for stable …
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Univ. of Georgia Savannah River Ecology Lab., Aiken, SC (United States). Div. of Wildlife Ecology and Toxicology; ... This study examines the levels of contamination and genetic damage associated with cesium-137 in catfish (Ictalurus punctatus) from the cooling pond and a control site. In general, catfish from the cooling pond exhibit greater ...
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It is essential to evaluate secondary migration caused by riverine input and resuspension from seabed sediments to estimate the future distribution of radioactive cesium (137 Cs) in the coastal area off Fukushima Prefecture.In particular, the inflow from rivers cannot be ignored because most of the 137 Cs inflow from rivers is deposited on …
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It is essential to evaluate secondary migration caused by riverine input and resuspension from seabed sediments to estimate the future distribution of radioactive cesium ( 137 Cs) …
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The U.S. Department of Energy's Office of Scientific and Technical Information
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The leaching of /sup 137/Cs from the vegetation began to level off towards the end of the study period (20.5 cm of rain). At the end of the 81-day period, the bare plot had lost 11.9% of the cesium while the clipped meadow and tall meadow plots has lost 5.1% and 2.6% of their cesium respectively.
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Authors: Wlodek, S Publication Date: Fri Jan 01 00:00:00 EST 1965 Research Org.: Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires
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