Water flow through soils.

Comparison of 1D models of water flow in unsaturated soils

Understanding the interaction between soil, vegetation and atmosphere processes and groundwater dynamics is of paramount importance in water resources planning and management in many practical applications. Hydrological models of complex water resources systems need to include a number of components and should therefore seek a balance between capturing all relevant processes and maintaining dat...

Regionalizing potential for microbial bypass flow through New Zealand soils.

Microbial breakthrough curves of 12 soils, generated by the application of dairy shed effluent followed by continuous artificial rainfall for one pore volume at 5 mm h(-1) onto large undisturbed soil cores, have been ranked as high, medium, or low potential for microbial bypass flow. The ranking is based on the position of the peak in the breakthrough curve. Knowledge of soil properties that af...

New thinking on water flow through glaciers

Water Flow through Frog Gastric Mucosa

To elucidate the role of protein synthesis in DNA formation, E. coli R2 infected with phage T2 was studed as a model, employing chloramphenicol to inhibit protein synthesis. The following results were obtained. 1. Chloramphenicol inhibited protein synthesis but not synthesis of nucleic acids in uninfected bacteria. 2. Studies of the effect of chloramphenicol on phage maturation indicated a dela...

Water flow and solute spreading in heterogeneous soils with spatially variable water content

Although the spatial variability of water content is expected to be significant in heterogeneous, unsaturated media, its effect on solute transport has been neglected in most stochastic analyses. In this work we develop, evaluate, and numerically verify an analytical model describing the statistical moments of water content, soil water flux, soil water velocity, and solute spreading in the unsa...