Soil physics — is the study of soil physical properties and processes. It is applied to management and prediction under natural and managed ecosystems. Soil physics deals with the dynamics of physical soil components and their phases as solids, liquids, and… … Wikipedia
Hydric soil — A hydric soil is a soil that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part. [This definition (Federal Register, July 13, 1994) replaced the… … Wikipedia
Fick's law of diffusion — Fick s laws of diffusion describe diffusion and can be used to solve for the diffusion coefficient D . They were derived by Adolf Fick in the year 1855. First law Fick s first law relates the diffusive flux to the concentration field, by… … Wikipedia
Edgar Buckingham — Infobox Scientist name = Edgar Buckingham caption = birth date = birth date|1867|7|8|mf=y birth place = Philadelphia, PA death date = death date and age|1940|4|29|1867|7|8|mf=y death place = Washington DC, U.S. residence = U.S. nationality = U.S … Wikipedia
Aerostatics — is the study of gases that are not in motion. The corresponding study of gases in motion is called aerodynamics. It is a subfield of fluid statics that focuses on gases.Aerostatics studies density allocation, especially in air. One of the… … Wikipedia
poison — poisoner, n. poisonless, adj. poisonlessness, n. /poy zeuhn/, n. 1. a substance with an inherent property that tends to destroy life or impair health. 2. something harmful or pernicious, as to happiness or well being: the poison of slander. 3.… … Universalium
Mars — /mahrz/, n. 1. the ancient Roman god of war and agriculture, identified with the Greek god Ares. 2. Astron. the planet fourth in order from the sun, having a diameter of 4222 miles (6794 km), a mean distance from the sun of 141.6 million miles… … Universalium
Cyanide — This article is about the class of chemical compounds. For other uses, see Cyanide (disambiguation). The cyanide ion, CN−. From the top: 1. Valence bond structure 2. Space filling model 3. Electrostatic potential surface 4. Carbon lone pair… … Wikipedia
Nonlimiting water range — The Non limiting water range (NLWR) represents the range of water content in the soil where limitations to plant growth (such as water potential, air filled porosity, or soil strength) are minimal. John Letey (1985) from UC Riverside introduced… … Wikipedia
Hemoglobin — Hemoglobin, human, adult (heterotetramer, (αβ)2) Structure of human hemoglobin. The protein s α and β subunits are in red and blue, and the iron containing heme groups in green. Fro … Wikipedia
