搜索结果: 1-15 共查到“环境科学技术 Soils”相关记录17条 . 查询时间(0.109 秒)
Study finds mercury levels in Arctic soils 5 times higher than temperate regions
mercury levels Arctic soils 5 times higher temperate regions
2017/7/24
Plants and soil in the Arctic tundra absorb and store mercury released into the atmosphere by industry and mining in the Earth's temperate regions, leading to soil mercury levels five times higher tha...
Using the Dual Energy Gamma-Ray Transmission Technique to Measure Soil Bulk Density and Water Content of Central Southwestern Nigerian Soils
Dual Energy Gamma-Ray Bulk Density Water Content Radiological Attenuation Coefficient
2013/3/12
In this work, a radiological technique which simultaneously measures soil bulk density and water contents accurately and quickly in a non-destructive manner at different depths of the soil profile of ...
Enhanced Microbial Removal of Pyrene in Soils in the Presence of Earthworms
Bioremediation earthworm PAHs bioavailability biodegradation
2013/12/12
Microbial degradation of pyrene was studied in soils in the presence and absence ofearthworms (Eisenia foetida) to demonstrate an integrated innovative strategy for biore-mediation of sites lightly po...
Turbidimetric Determination of Hydrocarbon Contamination in Passaic River Sediments and Refinery Polluted Soils
Hydrocarbon Contamination Turbidimetry Refinery Soils Passaic River Sediments
2013/3/12
A rapid method is described for the determination of petroleum hydrocarbons in soil samples. The method is based on the extraction of hydrocarbons by a solvent and the treatment of the solution with a...
Radioactivity in Surface Soils Around the Proposed Sites for Titanium Mining Project in Kenya
Radioactivity Measurements Titanium Mining Absorbed Dose Rates Natural Background Radiation
2013/3/12
Radioactivity measurements were carried out around Maumba and Nguluku villages, two of the proposed sites for titanium mining in the coastal area of Kenya. Samples of surface soils were analyzed using...
Study of the Permeability of Foam Conditioned Soils with Laboratory Tests
Tunneling Earth pressure balance shields soil conditioning laboratory tests permeability test
2010/12/22
Problem statement: EPB tunneling requires that the excavated soil has a plastic and pulpy behavior to be able to apply a stabilizing pressure to the face, but it should also be impervious to counterac...
Environmental Risk Imposed by Diverted Flood Waters on Water and Soils in Emergency Retention Basins
Environmental Risk Inundation Retention Basins Water Quality Contaminated SoilsLQuasi-2D Model
2013/3/13
Emergency retention basins (ERB) are diked enclosures alongside rivers into which water from the main river channel is diverted during extreme floods. If the basins are operated during extreme floodin...
Assessment of Radiological Contamination of Soils Due to Shipbreaking Using HPGe Digital Gamma-Ray Spectrometry System
Shipbreaking Yards HPGe Detector Radionuclides Activity Concentrations Dose Rates Radium
2013/3/13
A systematic study of the distribution of the Naturally Occurring Radioactive Materials as well as the anthropogenic radionuclide in the working environment of the Shipbreaking yards of Sitakunda, Chi...
Immobilization of cadmium in soils by UV-mutated Bacillus subtilis38 bioaugmentation and NovoGro amendment
Bioaugmentation Cadmium NovoGro Amendment Remediation
2013/12/12
Immobilization of cadmium (10 mg Cd per kilogram soil) in soil by bioaugmentation of a UV-mutatedmicroorganism,Bacillus subtilis38 accompanied with amendment of a bio-fertilizer, NovoGro was inves-tig...
Enzyme activities during degradation of polycyclic aromatic hydrocarbons by white rot fungus Phanerochaete chrysosporium in soils
PAHs Degradation Phanerochaete chrysosporium LiP MnP
2013/12/12
The degradation of three polycyclic aromatic hydrocarbons (PAHs), phenanthrene, pyrene and benzo[a]-pyrene in soils byPhanerochaete chrysosporium, andthe enzyme activities of lignin peroxidase (LiP) a...
Water content changes along shear planes in drained and undrained triaxial compression tests on unsaturated cohesive soils
Water content drained and undrained shear triaxial compression tests failure plane
2009/10/14
Drained and undrained triaxial compression tests were run on undisturbed samples of two unsaturated cohesive soils to study water content changes in drained and undrained conditions along shear planes...
Relationship between Methylene Blue Value,Initial Soil Suction and Swell Percent of Expansive Soils
Expansive soil Methylene blue value Psychrometer Swell percent Soil suction
2009/10/12
The purpose of this study was to investigate the relationship between methylene blue value, initial soil suction and the swell percentage of expansive soil samples. In this study, commercially process...
Radiological Study on Soils,Foodstuff and Fertilizers in the Alexandria Region,Egypt
Effective dose Fertilizer Foodstuff Radionuclide Soil
2009/10/9
Radionuclides 226Ra, 232Th, 40Kand 137Cs were measured in foodstuffs (vegetables, fruits, seeds, cereals,meats, and milks), soil, and agricultural chemical fertilizers (phosphate and urea) using a hig...
Detoxification of Heavy Metal Contaminated Soils
soil polluted organo-zeolitic plant growth
2009/2/25
The concentration of the heavy metals in the soils from the strong affected zones because of the mining and metallurgical industry, Baia Mare and Zlatna (Romania), is significant due to the high value...
Heavy Metal Mobility in Polluted Soils: Effect of Different Treatments
Biosolid compost fitoremediation leaching texture
2009/1/16
The effects of biosolid compost and phytoremediation applied on the leaching of cadmium, copper, lead and zinc, through the different horizons of a superficially polluted soil were determined.