- 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.
The thermodynamic function better known as the Helmholtz energy, <i>A</i> = <i>U</i> − <i>TS</i>, where <i>U</i> is the internal energy, <i>T</i> is the thermodynamic (absolute) temperature, and <i>S</i> is the entropy of the system. At constant temperature, the change in work function is equal to the maximum work that can be done by a system (Δ<i>A</i> = <i>w</i><sub>max</sub>).
Industry:Science
The maintenance of the temperature in a closed volume, such as a home, office, or factory, at a comfortable level during periods of low outside temperature. Two principal factors determine the amount of heat required to maintain a comfortable inside temperature: the difference between inside and outside temperatures and the ease with which heat can flow out through the enclosure.
Industry:Science
The process of storing an image in a ferroelectric material by utilizing either the intrinsic or extrinsic photosensitivity in conjunction with the ferroelectric properties of the material. Specifically, photoferroelectric (PFE) imaging refers to storing photographic images or other optical information in transparent lead-lanthanum-zirconate-titanate (PLZT) ferroelectric ceramics.
Industry:Science
The removal of a ship from its water environment, which needs to be done periodically to repaint the underwater portion of the hull, repair components exposed to the water, and conduct repairs and modernizations requiring cuts in the hull. At first, ships were just beached at low tide. This practice gave way to use of a marine railway where ships were hauled up the beach on rails.
Industry:Science
The science of weather and climate in the high latitudes of the Earth. In the polar regions the Sun never rises far above the horizon and remains below it continuously for part of the year, so that snow and ice can persist for long periods even at low elevations. The meteorological processes that result have distinctive local and large-scale characteristics in both polar regions.
Industry:Science
The term savanna was originally used to describe a tropical grassland with more or less scattered dense tree areas. This vegetation type is very abundant in tropical and subtropical areas, primarily because of climatic factors. The modern definition of savanna includes a variety of physiognomically or environmentally similar vegetation types in tropical and extratropical regions.
Industry:Science
The modern tugboat is a very powerful and agile tool to assist ships in their regular maneuvers into and out of port, or when in distress. The development of very efficient steerable thruster systems in concert with unique and very stable hull forms and high-performance deck machinery enables today's tugs to tackle assignments that could not have been imagined a short generation ago.
Industry:Science
The study of changes in the characteristics of organisms with body size. Characteristics such as body parts or timing of reproductive events do not necessarily change in direct proportion to body size, and the ways in which they change relative to body size can often provide insights into organisms, construction and behavior. Large organisms are often not merely magnified small ones.
Industry:Science
The measurement of dimensional relationships among points, lines, and physical features on or near the Earth's surface. Basically, surveying determines horizontal distances, elevation differences, directions, and angles. These basic determinations are applied further to the computation of areas and volumes and to the establishment of locations with respect to some coordinate system.
Industry:Science
The study of ecological processes that affect exploited aquatic organisms, in both marine and fresh-water environments. Because this field is primarily motivated by an attempt to harvest populations, special attention has been given to understanding the regulation of aquatic populations by nature and humans. The foundations of fisheries ecology lie in population and community ecology.
Industry:Science
