1 2 A detailed model was formulated to describe the non-passive transport of water-soluble 3 chemicals in the unsaturated zone and used to illustrate one-dimensional infiltration and 4 redistribution of alcohol-water mixtures. The model includes the dependence of density, 5 viscosity, surface tension, molecular diffusion coefficient in the liquid phase, and gas-liquid 6 partition coefficient on...

A theory of cross-coupled flow equations in unsaturated soils is necessary to predict (1) electroosmotic flow with application to electroremediation and agriculture, (2) the electroseismic and the seismoelectric effects to develop new geophysical methods to characterize the vadose zone, and (3) the streaming current, which can be used to investigate remotely ground water flow in unsaturated con...

In the process of in situ mining underground oil shale, it is necessary to build an frozen wall around area prevent inflow groundwater and gas leakage. However, water saturation soil affects formation freezing circle. practical engineering, when building a under different conditions, curtain often not closed. It also construction operating costs entire project. this paper, methods laboratory ex...

The effect of different dissolved oxygen (DO) concentrations on the macroinvertebrate assemblages from 2 Australian tropical streams (1 upland, 1 lowland) was measured using artificial stream mesocosms. Responses to 5-d exposures were tested. Both the upland and lowland assemblages showed a similar response. Most taxa tolerated all but very low DO levels ( 10% saturation), although a reduction ...

It is shown that a very simple model reproduces the pressure versus beam current characteristics of elongated single-cavity boiling water targets for F production surprisingly well. By fitting the model calculations to measured data, values for a single free parameter, namely an overall heattransfer coefficient, have been extracted for several IBA Nirta H2 O targets. IBA recently released detai...