- 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.
Portland cement concrete containing higher-strength, solid materials to improve its structural properties. Generally, steel wires or bars are used for such reinforcement, but for some purposes glass fibers or chopped wires have provided desired results.
Industry:Science
Large portions of the Earth's land area which have generally uniform climate and soil and, consequently, a biota showing a high degree of uniformity in species composition and adaptations to environment. Related terms are vegetational formation and biome.
Industry:Science
Membrane-based devices, involving permselective, ion-conducting materials, used for the measurement of activities of species in liquids or partial pressures in the gas phase. Permselective means that ions of one sign may enter and pass through a membrane.
Industry:Science
Large terrestrial walkers, such as humans, are rarely concerned with air movement; yet for many other organisms few factors matter more than fluid motion. The ways these organisms deal with flow help us to see how varied and potent are the possible devices.
Industry:Science
Organometallic compounds of the actinides—elements 90 and beyond in the periodic table. Both the large sizes of actinide ions and the presence of 5<i>f</i> valence orbitals are unique features which differ distinctly from most, if not all, other metal ions.
Industry:Science
Processes for separating mixtures by using thin barriers (membranes) between two miscible fluids. A suitable driving force across the membrane, for example, concentration or pressure differential, leads to the preferential transport of one or more feed components.
Industry:Science
In glass blowing, a long straight tube on which molten glass is gathered and worked, partly by blowing into the tube. The blowpipe is spun to shape the glass object further by centrifugal force, or by a tool, in which case the blowpipe acts as a spindle for turning.
Industry:Science
In the United States, the Centers for Disease Control and Prevention recently defined bioterrorism as “the intentional or threatened use of viruses, bacteria, fungi, or toxins from living organisms or agents to produce death or disease in humans, animals, and plants”.
Industry:Science
Optical instruments which establish an optical line or axis for the purpose of aiming a weapon. The axis includes the observer's eye, a suitable mark in the instrument, and the target. Most gunsights employ as their basis a telescope or a partially reflective mirror.
Industry:Science
Organic light-emitting devices (OLEDs) are an attractive technology for use in a new generation of flat-panel displays because of their wide viewing angle, ease of fabrication, and compatibility with a wide variety of substrates, including plastics, textiles, and paper.
Industry:Science
