Results 231 to 240 of about 15,167 (290)

Early signals of water limitations begin at the root-soil interface: linking rhizosphere drying to water uptake decline. [PDF]

open access: yesNew Phytol
Di Bert S   +8 more
europepmc   +1 more source

Permeability Functions for Unsaturated Soils

Journal of Geotechnical and Geoenvironmental Engineering, 1997
This paper examines the three categories of permeability functions for unsaturated soils, including empirical, macroscopic, and statistical models. The theoretical backgrounds and performance of each category are examined against various experimental data.
Leong, Eng Choon, Rahardjo, Harianto
openaire   +2 more sources

Ozonation of pentachlorophenol in unsaturated soils

Journal of Contaminant Hydrology, 2008
A heterogeneous model was developed to describe interactions between ozone and hydrophobic organic compounds, exemplified by pentachlorophenol, in highly gas-saturated vadose zones where water moisture was limited to a thin film on soil particle surfaces. The soil was assumed to be free of soil organic matter.
Menghau, Sung   +2 more
openaire   +2 more sources

Airflow dispersion in unsaturated soil

Journal of Contaminant Hydrology, 2006
Dispersion data is abundant for water flow in the saturated zone but is lacking for airflow in unsaturated soil. However, for remediation processes such as soil vapour extraction, characterization of airflow dispersion is necessary for improved modelling and prediction capabilities. Accordingly, gas-phase tracer experiments were conducted in five soils
T, Gidda   +3 more
openaire   +2 more sources

On-line estimation of biodegradation in an unsaturated soil

Bioprocess and Biosystems Engineering, 2003
The objective of this study was to develop a model-based estimator of biodegradation in unsaturated soil. This would allow real-time assessment of the efficiency of treatment bioprocesses, such as bioventilation and biopile, and eventually permit optimization through the implementation of control strategies.
O, Schoefs   +3 more
openaire   +2 more sources

Numerical simulation of unsaturated soil behaviour

International Journal of Computer Applications in Technology, 2009
The mechanical behaviour of unsaturated soils is one of the challenging topics in the field of geotechnical engineering. The use of finite element techniques is considered to be a promising method to solve settlement and heave problems, which are associated with unsaturated soil. Nevertheless, the success of the numerical analysis is strongly dependent
Ayman A. Abed, Pieter A. Vermeer
openaire   +1 more source

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