Soil is a granular medium that varies in composition from organic peat to gravel and that may contain various amounts of water. The soil physical system is continually being subjected to external forces and is, therefore, dynamic. These external forces may be environmental (climate, plants, animals, and microorganisms) or mechanical (forces applied by man using some type of machine). The specif...

Eclipse of Reason is a 1987 anti-abortion [3] documentary film directed, filmed, and narrated by Bernard Nathanson, an obstetrician in the US. American Portrait Films released the film in 1987 featuring Nathanson?s commentary and footage of an abortion [3] of a four-month-old fetus [4]. The film also featured the testimony of women who had suffered following similar procedures. In Eclipse of Re...

—Surface roughness has a significant effect on the relationship between radar hackscattcr and soil moisture. In order to use cxistinR radar satellite data for soil moisture, roughness effects must be corrected. A technique is presented that utilises Ihe data bases from soil erosion sludies and soil moisture remote sensing investigations to provide firsl order estimates «f the roughness parameters.

The successful functioning of a bioretention system depends on the use of suitable soil media. Predictive computer modelling of a bioretention system (e.g. using the MUSIC software) assumes specific characteristics of the soil media to achieve a certain level of stormwater treatment. Therefore, the soil media used in the construction of a bioretention system must exhibit the required characteri...

Three things must happen at exactly the same time if an infectious plant disease is to occur. One, a susceptible plant must be in a vulnerable state. Two, the parasite that causes the disease must be in an infective stage. Three, environmental conditions must be favorable for disease development. The environment of a plant consists of the air around it and the soil in which it grows. The enviro...