- 行业: Printing & publishing
- Number of terms: 178089
- Number of blossaries: 0
- Company Profile:
McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
The study of landforms, including the description, classification, origin, development, and history of planetary surface features. Emphasis is placed on the genetic interpretation of the erosional and depositional features of the Earth's surface. However, geomorphologists also study primary relief elements formed by movements of the Earth's crust, topography on the sea floor and on other planets, and applications of geomorphic information to problems in environmental engineering.
Industry:Science
The theory of complex systems. Complexity theory arises from the need to understand the richness in structure and behavior often seen in large systems. The property that distinguishes complex systems from systems that are large but simple is the emergence of global features from local interactions, as captured in the popular saying “the whole is greater than the sum of its parts.” For example, a flock of birds emerges when individual birds coordinate their behavior with each other.
Industry:Science
The most important and familiar oxyacid of sulfur. Recognized oxyacids of sulfur include those represented by formulas H<sub>2</sub>SO<sub>x</sub> and H<sub>2</sub>S<sub>2</sub>O<sub>y</sub> with <i>x</i> = 1–5 and <i>y</i> = 2–8. Of these, H<sub>2</sub>SO<sub>4</sub> (sulfuric), H<sub>2</sub>SO<sub>5</sub> (peroxysulfuric or Caro's acid), H<sub>2</sub>S<sub>2</sub>O<sub>7</sub> (pyrosulfuric), and H<sub>2</sub>S<sub>2</sub>O<sub>8</sub> (peroxydisulfuric) have been characterized.
Industry:Science
The sense of sight, which perceives the form, color, size, movement, and distance of objects. Of all the senses, vision provides the most detailed and extensive information about the environment. Conversely, blindness is recognized as more disabling than deafness or any other sensory handicap. In the higher animals, especially the birds and primates, the eyes and the visual areas of the central nervous system have developed a size and complexity far beyond the other sensory systems.
Industry:Science
The removal of a soluble fraction, in the form of a solution, from an insoluble, permeable solid with which it is associated. The separation usually involves selective dissolving, with or without diffusion, but in the extreme case of simple washing it consists merely of the displacement (with some mixing) of one interstitial liquid by another with which it is miscible. The soluble constituent may be solid (as the metal leached from ore) or liquid (as the oil leached from soybeans).
Industry:Science
The term gas field refers to a geographical area which is underlain by one or more commercial reservoirs of petroleum. This commercially valuable gas, primarily methane but with smaller amounts of ethane, propane, and butanes and in some cases containing significant concentrations of carbon dioxide, hydrogen sulfide, and nitrogen, is produced through wells which penetrate subterranean reservoirs, composed of porous rock. The gas in the reservoir may be free or dissolved in crude oil.
Industry:Science
The major subdivision (subclass) of the crustacean class Malacostraca. It comprises three, four, or five Recent superorders: Syncarida, Peracarida, and Eucarida are most commonly included and all that are recognized here. However, some carcinologists still insist on ranking the Hoplocarida among eumalacostracans. Acceptance of a separate superorder, Pancarida for the Thermobaenacea, has not received general support, and thermobaenaceans are commonly now included with peracaridan taxa.
Industry:Science
The science of breeding, raising, and marketing swine. This agricultural enterprise is usually located in proximity to sources of high-energy feedstuffs; in the United States, the geographical distribution of swine production is closely related to maize and sorghum production. Swine, as nonruminants, utilize large quantities of concentrate feeds; it is estimated that 30% of the maize grain produced is fed to swine. Swine can utilize only limited quantities of roughage in their diet.
Industry:Science
The separation of solute gases from gaseous mixtures of noncondensables by transfer into a liquid solvent. This recovery is achieved by contacting the gas stream with a liquid that offers specific or selective solubility for the solute gas or gases to be recovered. The operation of absorption is applied in industry to purify process streams or recover valuable components of the stream. It is used extensively to remove toxic or noxious components (pollutants) from effluent gas streams.
Industry:Science
The term pearl is applied properly to any mollusk-formed calcareous concretion that displays an orient and is lustrous. There are two major groups of bivalved mollusks in which gem pearls may form: the salt-water pearl oyster (<i>Pinctada</i>), of which there are several species; and a number of genera of fresh-water clams. Usually, jewelers refer to salt-water pearls as Oriental pearls, regardless of their place of discovery, and to those from freshwater bivalves as freshwater pearls.
Industry:Science
