to flow by heads
91Hydraulic head — is a specific measurement of water pressure or total energy per unit weight above a geodetic datum. It is usually measured as a water surface elevation, expressed in units of length, but represents the energy at the entrance (or bottom) of a… …
92Italy — /it l ee/, n. a republic in S Europe, comprising a peninsula S of the Alps, and Sicily, Sardinia, Elba, and other smaller islands: a kingdom 1870 1946. 57,534,088; 116,294 sq. mi. (301,200 sq. km). Cap.: Rome. Italian, Italia. * * * Italy… …
93Data model — Overview of data modeling context: A data model provides the details of information to be stored, and is of primary use when the final product is the generation of computer software code for an application or the preparation of a functional… …
94GM LS engine — Infobox Automobile engine name=GM LS engine aka=GM Vortec engine manufacturer=General Motors production=1997–present class=OHV V8 predecessor=GM LT engine, Chevrolet Small Block engine, Chevrolet Big Block engine successor= similar=Ford Modular… …
95The Fabric of Reality — is a 1997 book by physicist David Deutsch, which expands upon his views of quantum mechanics and its meanings for understanding reality.This interpretation, or what he calls the multiverse hypothesis, is one strand of a four strand theory of… …
96Geographic information system — GIS redirects here. For other uses, see GIS (disambiguation). A geographic information system, geographical information science, or geospatial information studies is a system designed to capture, store, manipulate, analyze, manage, and present… …
97Pelton wheel — The Pelton wheel is among the most efficient types of water turbines. It was invented by Lester Allan Pelton (1829 1908) in the 1870s, and is an impulse machine, meaning that it uses the principle of Newton s second law to extract energy from a… …
98Geography and ecology of the Everglades — The geography and ecology of the Everglades involve the complex elements affecting the natural environment throughout the southern region of the U.S. state of Florida. Before drainage, the Everglades were an interwoven mesh of marshes and… …
99Portugal — /pawr cheuh geuhl, pohr /; Port. /pawrdd too gahl /, n. a republic in SW Europe, on the Iberian Peninsula, W of Spain. (Including the Azores and the Madeira Islands) 9,867,654; 35,414 sq. mi. (91,720 sq. km). Cap.: Lisbon. * * * Portugal… …
100Supercritical fluid extraction — (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent. Extraction is usually from a solid matrix, but can also be from liquids. SFE can be used as a sample …
