- 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 process by which solids are transformed directly to the vapor state without passing through the liquid phase. Sublimation is of considerable importance in the purification of certain substances such as iodine, naphthalene, and sulfur.
Industry:Science
The study of the energies and structures of conformations of organic molecules and their chemical and physical properties. Organic molecules are not static entities. The constituent atoms vibrate and groups rotate about the bond axes.
Industry:Science
The study of the propagation of energy by radiative processes; it is also called radiation transport. Radiation is one of the three mechanisms by which energy moves from one place to another, the other two being conduction and convection.
Industry:Science
The science of those minerals and other materials which possess sufficient beauty and durability to make them desirable as gemstones. It is concerned with the identification, grading, evaluation, fashioning, and other aspects of gemstones.
Industry:Science
The subclass of Amphibia including all living amphibians (frogs, toads, salamanders, and apodans). The other two subclasses are the Labyrinthodontia and the Lepospondyli, predominantly Paleozoic fossil groups lacking recent representatives.
Industry:Science
The owls, an order of nocturnal predacious birds found worldwide that are probably related most closely to the goatsuckers. They are not closely allied to the hawks; similarities between the two groups are the result of convergent evolution.
Industry:Science
The most familiar compound composed of the elements nitrogen and hydrogen, NH<sub>3</sub>. It is formed as a result of the decomposition of most nitrogenous organic material, and its presence is indicated by its pungent and irritating order.
Industry:Science
The name applied to the 31 species of Old World rodents of the family Gliridae. These animals are intermediate between squirrels and rats; they are vegetarians and arboreal like the former, but most have a general appearance like the latter.
Industry:Science
The structures concerned with the production of sex cells (gametes) and perpetuation of the species. The comparative anatomy, human histology, embryology, physiology, endocrinology, and biochemistry of this system are treated in this article.
Industry:Science
The microbial formation of methane. It is confined to anaerobic habitats where the production of hydrogen, carbon dioxide, formic acid, methanol, methylamines, or acetate—the major substrates used by methanogenic microbes (methanogens)— occurs.
Industry:Science
