- 行业: Printing & publishing
- Number of terms: 178089
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- 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.
A lentivirus-induced disease of the horse family with an almost worldwide distribution. It is characterized by recurring fever, platelet reduction, weight loss, edema, and anemia. Although death can occur, there is usually an eventual cessation of clinical signs. However, host defenses are unable to completely eliminate the virus, and the animal remains a persistently infected inapparent carrier.
Industry:Science
A lesion on the surface of the skin or a mucous membrane characterized by a superficial loss of tissue. Ulcers are most common on the skin of the lower extremities and in the gastrointestinal tract, although they may be encountered at almost any site. The diverse causes of ulcers range from circulatory disturbances or bacterial infections to complex, multifactorial disorders. The superficial tissue sloughs, leaving a crater that extends into the underlying soft tissue, which then becomes inflamed and is subject to further injury by the original offender or secondary infection.
Industry:Science
A lifeless object is said to be in equilibrium, or in a state of balance, when all forces acting upon it cancel. The result is a state of rest. In an actively moving animal, internal as well as external forces have to be considered, and the maintenance of a balanced attitude in a body consisting of a number of parts that are loosely connected by movable joints is complex.
Industry:Science
A light-colored, aphanitic (not visibly crystalline) rock of volcanic origin, composed largely of alkali feldspar, feldspathoids (nepheline, leucite, sodalite), and smaller amounts of dark-colored (mafic) minerals (biotite, soda amphibole, and soda pyroxene). Phonolite is chemically the effusive equivalent of nepheline syenite and similar rocks. Rocks in which plagioclase (oligoclase or andesine) exceeds alkali feldspar are rare and may be called feldspathoidal latite.
Industry:Science
A light-colored, aphanitic (very finely crystalline) rock of volcanic origin, composed largely of alkali feldspar with minor amounts of dark-colored (mafic) minerals (biotite, hornblende, or pyroxene). If sodic plagioclase (oligoclase or andesine) exceeds the quantity of alkali feldspar, the rock is called latite. Trachyte and latite are chemically equivalent to syenite and monzonite, respectively.
Industry:Science
A lightweight, single-seat aircraft with low flight speed and power, used for sport or recreation. Ultralights evolved from hang gliders, and the first models were crude, home-built modifications of the Icarus, a rigid-wing, biplane, tailless hang glider popular in the mid-1970s. Newer ultralights are designed strictly as motorized aircraft and cannot be flown as hang gliders. Ultralights are sold as kits, requiring from 50 to 300 h for construction.
Industry:Science
A line along which the speed of the wind is constant. Isotachs are customarily represented on surfaces of constant elevation or atmospheric pressure, or in vertical cross sections. The closeness of spacing of the isotachs is indicative of the intensity of the wind shear on such surfaces. In the region of a jet stream the isotachs are approximately parallel to the streamlines of wind direction and are closely spaced on either side of the core of maximum speed.
Industry:Science
A line of longitude on Earth or in the sky, perpendicular to the Equator, and extending between the North and South poles.
Industry:Science
A line of thunderstorms, near whose advancing edge squalls occur along an extensive front. The thundery region, 12–30 mi (20–50 km) wide and a few hundred to 1250 mi (2000 km) long, moves at a typical speed of 15 m/s (30 knots) for 6–12 h or more and sweeps a broad area. In the United States, severe squall lines are most common in spring and early summer when northward incursions of maritime tropical air east of the Rockies interact with polar front cyclones. Ranking next to hurricanes in casualties and damage caused, squall lines also supply most of the beneficial rainfall in some regions.
Industry:Science
A linear polymer made up of a specific sequence of deoxyribonucleotide repeating units linked by 3′,5′-phosphodiester bonds; it is the carrier of genetic information. The set of DNA molecules that contains all genetic information for an organism is called its genome. DNA is found primarily in the nuclei of eukaryotic cells and in the nucleoid of bacteria. Small amounts of DNA are also found in organelles (such as mitochondria and chloroplasts) that contain their own genomes, in autonomously maintained DNAs called plasmids, and in viruses.
Industry:Science
