نتایج جستجو برای: soil movement

تعداد نتایج: 335165  

2006
GRZEGORZ J. PORÊBA

This paper describes a method of soil erosion and soil movement measurements using 137Cs as a tracer. This technique has been used successfully employed for more than 30 years. Caesium-137 is a valuable tracer to study soil erosion. Its chemical and biological movement in soil is limited. Practically all redeposition of caesium-137 in soil after fallout occurs with soil particles due to strong ...

2014
Meng Fei Wu Li-chun Zhang Jia-sheng Deng Guo-dong Ni Zhi-hui

In order to calculate the ground movement induced by displacement piles driven into horizontal layered strata, an axisymmetric model was built and then the vertical and horizontal ground movement functions were deduced using stochastic medium theory. Results show that the vertical ground movement obeys normal distribution function, while the horizontal ground movement is an exponential function...

Ayesha S Ali, Iram Khan, Sharique A. Ali,

Introduction: Among soil species earthworms are ubiquitous, abundant and important for soil processes, constituting the largest terrestrial faunal biomass and are also impacted by soil pollutants. The primary purpose of this study was to determine whether changes in earthworm biomass and behavior could serve as a good indicator for copper toxicity in soil systems. Another aim of the study was t...

A Naseri H Ghafarian Malmiri M Behzad S. F Ashrafi,

In this study, the feasibility of using magnetic technology to reduce the dispersion of soil has been investigated. The reference treatment was potable water and 3 magnetic water devices (with different magnetic intensities) were used for magnetizing the potable water. The results showed that the magnetic field has a significant effect in order of 5 percent on increasing of magnesium concentrat...

Journal: :international journal of environmental research 0
z. miletić institute of forestry, department for silviculture, plantation establishment and forest ecology, belgrade, serbia m. knežević faculty of forestry, department of forest ecology, belgrade, serbia s. stajić institute of forestry, department for silviculture, plantation establishment and forest ecology, belgrade, serbia o. košanin faculty of forestry, department of forest ecology, belgrade, serbia i. đorđević institute of forestry, department for silviculture, plantation establishment and forest ecology, belgrade, serbia

the effect of european black alder (alnus glutinosa l.) on the contents of carbon and nitrogen,exchangeable base cations, and plant available forms of phosphorus in the reclaimed mine soils formed bywaste deposition from opencast lignite mines was researched in central serbia. it was concluded that thegreatest part of dead organic residues reaching the soil under european black alder monocultur...

Journal: :Journal of environmental quality 2005
Nathan O Nelson John E Parsons Robert L Mikkelsen

Accurate descriptions of P leaching are important because excess P applied to soils can enter surface water via leaching and subsurface transport, thereby negatively impacting water quality. The objectives of this study were to monitor P leaching in soils with a long-term history of waste application, relate soil solution P concentrations to soil P status, and quantify P leaching losses. Soil s...

Babak Seyfi, Omid Bahmani

The relationship between the accumulation of nitrate in the soil and its concentration in groundwater and in various plant systems is still not fully understood, but it indicates a high correlation between nitrate leaching and environmental and managerial factors. In this study in order to model the movement of nitrate in the soil profile and loss of fertilizer in the root zone using NLEAP GIS ...

2006
M. Krishnapillai R. Sri Ranjan

Abstract Nitrates when found in excess in the groundwater, is a health hazard. Nitrates can easily be transported by groundwater movement and may eventually reach aquifers located far away from the contamination location. It is important to monitor the nitrate movement in the groundwater to predict the extent of nitrate contamination. Traditionally, nitrate movement is monitored by sampling gro...

Journal: :international journal of environmental research 2012
z. miletić m. knežević s. stajić o. košanin i. đorđević

the effect of european black alder (alnus glutinosa l.) on the contents of carbon and nitrogen,exchangeable base cations, and plant available forms of phosphorus in the reclaimed mine soils formed bywaste deposition from opencast lignite mines was researched in central serbia. it was concluded that thegreatest part of dead organic residues reaching the soil under european black alder monocultur...

Journal: :Applied and environmental microbiology 1978
C P Gerba J C Lance

Adsorption of poliovirus from primary sewage effluent was similar to that from secondary sewage effluent in both batch soil studies and experiments with soil columns 240 cm long. Virus desorption by distilled water was also similar in a soil column that had been flooded with either primary or secondary effluent seeded with virus. These results indicated that absorption of poliovirus from primar...

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