- 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.
Any of the class of magnetic oxides. Typically the ferrites have a crystal structure that has more than one type of site for the cations. Usually the magnetic moments of the metal ions on sites of one type are parallel to each other, and antiparallel to the moments on at least one site of another type. Thus ferrites exhibit ferrimagnetism, a term coined by L. Néel.
Industry:Science
Crop plants that belong to the grass family (Gramineae), generally grown for their edible starchy seeds. They also are referred to as cereal crops and include wheat, rice, maize (corn), barley, rye, oats, sorghum (jowar), and millet. The grain of all these cereals is used directly for human food and also for livestock, especially maize, barley, oats, and sorghum.
Industry:Science
Heat transfer is vital in many processes, including electric power generation, automotive propulsion and climate-control systems, household heating and cooling equipment, control of body temperature through clothing, thermal management of electronic equipment, and Earth-atmosphere systems, to name a few. Whenever there is a temperature difference, there is heat transfer.
Industry:Science
Dementia is a syndrome characterized by a generalized decline in cognition that is severe enough to cause functional impairment in daily activities. Dementia can be caused by a variety of conditions common in late life, including vascular disease or strokes, Parkinson's disease, Lewy body disease, alcoholism, and Alzheimer's disease (by far the most common cause of dementia).
Industry:Science
If the position of a material system as measured by a particular observer changes with respect to time, that system is said to be in motion with respect to the observer. Absolute motion, then, has no significance, and only relative motion may be defined; what one observer measures to be at rest, another observer in a different frame of reference may regard as being in motion.
Industry:Science
In 1940, only 10% of the energy consumption in North America was used to produce electricity. By 1970, this had risen to 25%, and by 2002, it was 40%. The North American electric power grid plays a critical role in the economy and society, and has been hailed by the National Academy of Engineering as the twentieth century's engineering innovation most beneficial to civilization.
Industry:Science
Determination of the nature of sedimentary rocks and the fluids they contain from analysis of seismic data. Prior to the 1970s, seismic data were used only to map the structure of the Earth. Since then, improvements in seismic data quality have revealed reflection patterns that indicate the environment in which the sediments were deposited, and as a result the nature of the rocks.
Industry:Science
Any of several leguminous plants, or their seeds, long utilized as food by humans or livestock. Some 14 genera of the legume family contain species producing seeds termed beans and useful to humans. Twenty-eight species in 7 genera produce beans of commercial importance, implying that the bean can be found in trade at the village level or up to and including transoceanic commerce.
Industry:Science
Ehrlichiosis is a tick-borne infection that often is asymptomatic but also can produce an illness ranging from a few mild symptoms to an overwhelming multisystem disease. Ehrlichiosis is included with those infections that are said to be emerging, either because they have been recognized only recently or because they were previously well known but now are occurring more frequently.
Industry:Science
In contrast to machines, organisms exchange parts continuously. Body cells die, whereas others divide and proliferate. It is one of the great wonders to observe an organism, starting from a single cell, reaching its final architecture, and maintaining this architecture for the rest of its life, with all pieces in permanent flow exchanging several million cells per minute in humans.
Industry:Science
