- 行业: Printing & publishing
- Number of terms: 178089
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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 branch of transportation engineering that deals with feasibility study, planning, design, construction, and operation of subway (underground railway) systems. In addition to providing rapid and comfortable service, subways consume less energy per passenger carried in comparison with other modes of transportation such as automobiles and buses. They have been adopted in many cities as a primary mode of transportation to reduce traffic congestion and air pollution.
Industry:Science
The gravitational attraction at the surface of a planet or other celestial body. The quantity <i>g</i> is often referred to simply as “gravity” or “the force of gravity” of Earth, both of which are incorrect. The force of gravity means the force with which a celestial body attracts an object, that is, the weight of the object. The letter <i>g</i> represents the acceleration caused by the gravitational force and, of course, has the dimensions of acceleration.
Industry:Science
The animal kingdom is composed of approximately 35 phyla, with each phylum representing a distinct body plan. Only a portion of one phylum (Chordata) includes vertebrates; the remainder are invertebrate animals. Traditional phylogeny is based on a number of morphological and developmental traits, or characters. The animal kingdom is probably derived from unicellular protozoanlike ancestors, most likely by the evolution of cytoplasmic separation to form multiple cells.
Industry:Science
The distribution of diffusible ions on either side of a semipermeable membrane in the presence of macro-ions that are too large to pass through the membrane. The Donnan equilibrium thus is the result of (1) external constraints (boundary conditions) that enforce an unequal distribution of mobile ions and (2) a corresponding electrical potential on the membrane as a balance. This equilibrium is named for F. G. Donnan, the first to describe it and formulate the theory.
Industry:Science
The increase in size or weight of an animal. A number of processes are involved in growth. These include hyperplasia, or increase in cell number due to cell proliferation (cell division or mitosis) and recruitment from stem cell populations; hypertrophy, or increase in the size of cells; and differentiation (precursor cells achieving mature functioning—often this process cannot be reversed). Schematic diagrams showing muscle and adipose development are included below.
Industry:Science
Systems that deliver controlled amounts of a therapeutic agent over a prolonged period or in a desirable temporal fashion, thereby maintaining required plasma or tissue drug levels. Controlled drug delivery systems can take a variety of forms, such as mechanical pumps, polymer matrices or microparticulates, and externally applied transdermal patches. The development of systems requires the coordinated effort of engineers, physicians, surgeons, chemists, and biologists.
Industry:Science
The human activity of naming organisms and organizing these names according to a given criterion. In biology, taxonomy has evolved into formal rules and systems to classify organisms. It is part of the broader discipline of systematics, a discipline that covers all of comparative biology, such as comparative morphology, genomics, and biogeography. Systematists who develop formal biological classifications and publish taxonomic revisions and keys are practicing taxonomy.
Industry:Science
The application of plant science for purposes of civil or criminal law. Forensic botany has opened aspects of the field of botany to novel avenues within criminal investigations. Today, several subdisciplines of plant science are being applied successfully in criminal investigations—for example, plant systematics including identification of plant species, plant anatomy, and plant ecology. Often, forensic applications come from combinations of these areas in a given case.
Industry:Science
The formation of ice on the ground, on plants, or on structures near the Earth's surface as a result of the drop in air temperature to lower than 32°F (0°C) and the presence of water vapor or liquid water in the air. The causes of the cooling, and the types of ice that form, can be quite varied, depending on the existing meteorological factors. Frost can have serious impact, with the main effect being in agriculture, but transportation and other areas are also affected.
Industry:Science
The Earth's heat flow is defined as the amount of heat escaping per unit time from the interior across each unit area of the Earth's solid surface. The movement of heat within the Earth and its eventual loss through the surface are central elements in the modern theory of plate tectonics. The plate movements over the surface of the Earth are seen as one manifestation of a heat engine at work in the interior, and the heat flow at the surface as the exhaust from the engine.
Industry:Science
