permeability of soil
31Fly ash — Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not… …
32Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
33Landslide — This article is about the geological phenomenon. For other uses, see Landslide (disambiguation). Rockslide redirects here. For the comic book character, see Rockslide (comics). Computer simulation of a slump landslide in San Mateo County,… …
34Hydrogeology — ( hydro meaning water, and geology meaning the study of the Earth) is the area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth s crust, (commonly in aquifers). The term geohydrology is… …
35Darcy's law — is a phenomenologically derived constitutive equation that describes the flow of a fluid through a porous medium. The law was formulated by Henry Darcy based on the results of experiments[1] on the flow of water through beds of sand. It also… …
36Core sample — Rock core samples. The product of a Diamond rig. (The bird is a Pied Butcherbird.) A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with special drills into the… …
37Flagler Estates, Florida — Flagler Estates is an unincorporated area in St. Johns County and Flagler County, Florida, United States. The boundaries Flagler Estates are generally associated with the boundaries of the Flagler Estates Road and Water Control District (FERWCD) …
38valley — valleylike, adj. /val ee/, n., pl. valleys. 1. an elongated depression between uplands, hills, or mountains, esp. one following the course of a stream. 2. an extensive, more or less flat, and relatively low region drained by a great river system …
39Coalbed methane — (CBM) or Coal Bed Methane[1], coalbed gas or coal mine methane (CMM) is a form of natural gas extracted from coal beds. In recent decades it has become an important source of energy in United States, Canada, and other countries. Australia has… …
40drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… …
