- 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.
Gas hydrate has been known to chemists since the early 1800s, but in the 1960s geologists were the first to recognize it as naturally occurring. Thereafter, interest in natural gas hydrate increased dramatically, leading to speculation regarding its energy resource potential, its effect on global climate change, and its role as a geohazard.
Industry:Science
Hybrid vigor or increase in size, yield, and performance found in hybrids, especially if the parents have previously been inbred. The application of heterosis has been one of the most important contributions of genetics to scientific agriculture in providing hybrid corn, and vigorous, high-yielding hybrids in other plants and in livestock.
Industry:Science
Fixed permanent structures, more or less enclosed and designed to use as housing or shelter or to serve the needs of commerce and industry. The history of buildings is almost as old as human history. Most contemporary building techniques are possible because of materials and methods of construction that have been introduced since about 1800.
Industry:Science
From the largest navy, that of the United States, to the navies of newly emergent maritime powers, the end of the Cold War continues to drive radical change in surface ship design in that ship designs are being based less on superpowers conflict and more on varied operational scenarios. Notable trends in naval ship design are described below.
Industry:Science
Any of the various processes for restoring a system to its original state by restoring some property of a system to its original value, or for using the properties of a system at one point in a cycle to modify the properties of the same system at another point in that cycle. The term has a wide variety of uses in different fields of engineering.
Industry:Science
Characteristic clusters of nerve cell bodies (gray matter) and their meshwork, or reticulum, of fibers which are found in the brainstem and the diencephalon. The reticular formation is thought to be a complex, highly integrated mechanism which exerts both inhibition and facilitation on almost every type of activity of the central nervous system.
Industry:Science
An uncrewed, controlled-flight vehicle that is guided to a target by guidance and control equipment. This equipment may be carried in the missile vehicle itself, or guidance may be directed from the launch site. The term is generally reserved for aerodynamic maneuverable missiles that may be guided to predetermined targets for military purposes.
Industry:Science
Atom lithography designates a physical method where the forces exerted by interfering laser beams on the atoms of an atomic beam are used to steer the atoms into nanostructures fabricated on a plane surface. While atom lithography is the most frequently used term, the method is also known as light-force lithography and atomic nanofabrication (ANF).
Industry:Science
Any digital computing means that accepts as its input a set of one or more digital signals from which it generates as its output a second set of digital signals. While being strictly correct, this definition is too broad to be of any practical use, but it does demonstrate the possible extent of application of digital-filter concepts and terminology.
Industry:Science
Any of a number of alternative forms of a gene. Allele is a contraction of allelomorph, a term which W. Bateson used to designate one of the alternative forms of a unit showing mendelian segregation. New alleles arise from existing ones by mutation. The diversity of alleles produced in this way is the basis for hereditary variation and evolution.
Industry:Science
