- 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 cultivation of cells in the laboratory. Bacteria and yeasts may be grown suspended in a liquid medium or as colonies on a solid medium (usually solidified by 1.5–2.5% agar); molds grow on moist surfaces; and animal and plant cells (tissue cultures) usually adhere to the glass or plastic beneath a liquid medium. Cultures must provide sources of energy and raw material for biosynthesis, as well as a suitable physical environment.
Industry:Science
The general biology, biochemistry, and economics of nonfood natural products of value in medicine, pharmacy, and other health professions. The products studied are of biologic origin, either plant or animal. They may consist of entire organs, mixtures obtained by exudation or extraction, or chemicals obtained by extraction and subsequent purification.
Industry:Science
The dominant order of living reptiles, composed of the lizards and snakes. The group first appeared in Jurassic times and today is found in all but the coldest regions. Various forms are adapted for arboreal, burrowing, or aquatic lives, but most squamates are fundamentally terrestrial. There are over 7700 extant species: 4800+ lizards and 2900+ snakes.
Industry:Science
The farm crops may be roughly classed as follows: (1) food crops—the bread grains (wheat and rye), rice, sugar crops (sugarbeets and sugarcane), potatoes, and dry legume seeds (peanuts, beans, and peas); (2) feed crops—corn, sorghum grain, oats, barley, and all hay and silage; and (3) industrial crops—cotton (lint and seed), soybeans, flax, and tobacco.
Industry:Science
The connecting of electronic equipment to an electromagnetic reference common to itself, its power source, its environment, and the environment of its users. Electronic equipment is grounded to protect users from shock, to protect the equipment from spurious currents or voltages, and especially to isolate it from noise that contaminates its environment.
Industry:Science
The formation of a racemate from a pure enantiomer. Alternatively stated, racemization is the conversion of one enantiomer into a 50:50 mixture of the two enantiomers (+ and −, or R and S) of a substance. Racemization is normally associated with the loss of optical activity over a period of time since 50:50 mixtures of enantiomers are optically inactive.
Industry:Science
Static fields that are strong enough to cause the normal vacuum, which is devoid of real particles, to break down into a new vacuum in which real particles exist. This phenomenon has not yet been observed for electric fields, but it is predicted for these fields as well as others such as gravitational fields and the gluon field of quantum chromodynamics.
Industry:Science
The force that propels an aerospace vehicle or marine craft. Thrust is a vector quantity. Its magnitude is usually given in newtons (N) in International System (SI) units or pounds-force (lbf) in U.S. Customary Units. A newton is defined as 1 kilogram mass times an acceleration of 1 meter per second squared. One newton equals approximately 0.2248 lbf.
Industry:Science
The ability of organisms to detect changes in the chemical composition of their exterior or interior environment. It is a characteristic of every living cell, from the single-celled bacteria and protozoa to the most complex multicellular organisms. Chemoreception allows organisms to maintain homeostasis, react to stimuli, and communicate with one another.
Industry:Science
The controlled use of explosives to achieve specific underwater work requiring cutting, fragmenting, perforating, or pounding. The use of underwater explosives was pioneered by the military before and during World War II for the removal of beach obstructions prior to amphibious landings, mine clearance, channel cutting, and the demolition of wrecked vessels.
Industry:Science
