- 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.
Phenomena associated with the movement of charged particles through a continuous medium or with the movement of a continuous medium over a charged surface. The four main electrokinetic phenomena are electrophoresis, electroosmosis, streaming potential, and sedimentation potential, or Dorn effect. These phenomena are related to one another through the zeta potential ζ of the electrical double layer that exists in the neighborhood of the charged surface.
Industry:Science
Minerals that are formed in sediment or a sedimentary rock. Their in-place origin distinguishes them from minerals that are formed elsewhere and transported to the site of deposition (detrital minerals). Authigenic minerals form at the Earth's surface as well as during subsequent burial. The postdepositional processes are referred to as diagenesis, and the resulting minerals are important clues to postdepositional physical and chemical changes in the rock.
Industry:Science
Most people agree that wood should be recycled into new products. This can be done several times over and, if subsequent recycling is not economically viable, the wood can be burned to recover the energy that it contains. However, few people are aware of the technical difficulties associated with the simple idea of recycling old wood products into new ones. One aspect of this is minimization of the contamination levels in products made from recovered wood.
Industry:Science
Processes that shape the shore features of coastlines and begin the mixing, sorting, and transportation of sediments and runoff from land. In particular, the processes include those interactions among waves, winds, tides, currents, and land that relate to the waters, sediments, and organisms of the nearshore portions of the continental shelf. The nearshore extends from the landward limit of storm-wave influence, seaward to depths where wave shoaling begins.
Industry:Science
Materials made by cooling certain molten materials in such a manner that they do not crystallize but remain in an amorphous state, their viscosity increasing to such high values that, for all practical purposes, they are solid. Materials having this ability to cool without crystallizing are relatively rare, silica (SiO<sub>2</sub>) being the most common example. Although glasses can be made without silica, most commercially important glasses are based on it.
Industry:Science
One of the five major plant hormones that play an important role in plant growth and development. Abscisic acid (ABA) is ubiquitous in higher plants; the highest levels are found in young leaves and developing fruits and seeds. Abscisic acid is also produced by certain algae and by several phytopathogenic fungi. It has been found in the brains of several mammals; however, animals probably do not produce abscisic acid but acquire it from plants in the diet.
Industry:Science
One of the most important technologies in the attempt to reduce particulate matter (PM) emissions is the diesel particulate filter, or DPF. To understand the performance capabilities of diesel particulate filters, it is necessary to be familiar with the definition and composition of diesel particulates. Diesel particulate matter is composed of three main fractions: elemental carbon and ash (solid), organic fraction (liquid), and sulfate particulates (liquid).
Industry:Science
Keeping perishable products at low temperatures in order to extend storage life. Cold storage vastly retards the processes responsible for the natural deterioration of the quality of such products at higher temperatures. Time and temperature are the key factors that determine how well foods, pharmaceuticals, and many manufactured commodities, such as photographic film, can retain properties similar to those they possess at the time of harvest or manufacture.
Industry:Science
Rodents comprising the family Caviidae, which includes the guinea pig, rock cavies, mountain cavies, capybara, salt-desert cavy, and mara. All members of the group are indigenous to South America and comprise 15 species in six genera. Cavies have either rounded bodies with large heads and short ears and limbs, or rabbitlike bodies with long limbs and moderately long ears. They have 20 teeth with short incisors and a dental formula of I 1/1 C 0/0 Pm 1/1 M 3/3.
Industry:Science
Molecular-scale tubes of graphitic carbon with outstanding properties. They are among the stiffest and strongest fibers known, and have remarkable electronic properties and many other unique characteristics. They have attracted huge academic and industrial interest, with thousands of papers on nanotubes being published every year. Commercial applications have been rather slow to develop, primarily because of the high production costs of the best-quality nanotubes.
Industry:Science
