- 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 interaction of laser light with biological molecules, and the applications to biology and medicine. The spatial coherence of laser emissions makes it possible to focus beams in small volumes. Consequently, high-power-density irradiations can be obtained, especially with lasers whose energy is delivered in a few nanoseconds or even picoseconds. These two characteristics, combined with the great variety of wavelengths available, have opened up many possibilities of applications to biology and medicine.
Industry:Science
The extreme permissible values of a dimension are known as limits. The degree of tightness or looseness between two mating parts that are intended to act together is known as the fit of the parts. The character of the fit depends upon the use of the parts. Thus, the fit between members that move or rotate relative to each other, such as a shaft rotating in a bearing, is considerably different from the fit that is designed to prevent any relative motion between two parts, such as a wheel attached to an axle.
Industry:Science
The first crewless circumnavigation of the globe was achieved by one of the 280 balloons flown around the Southern Hemisphere by the U.S. National Center for Atmospheric Research (NCAR) during 1966 as part of its GHOST project. Many of the lighter-than-air craft involved in this experiment, and the later EOLE and TWERLE crewless balloon projects, are known to have achieved multiple orbits. The record is probably held by a balloon designated GHOST 79R that was tracked making eight complete circumnavigations.
Industry:Science
That branch of biological science which embraces the study of plants and plant life. According to the specific objectives of the investigators, botanical studies may range from microscopic observations of the smallest and obscurest plants to the study of the trees of the forest. One botanist may be interested mainly in the relationships among plants and in their geographic distribution, whereas another may be primarily concerned with structure or with the study of the life processes taking place in plants.
Industry:Science
The basic unit of the vertebral column. Collectively, the vertebrae surround and protect the spinal cord and provide some type of axial support for the body. The stresses that the vertebral column must meet change somewhat from one end of the animal to the other, and also differ greatly between aquatic and terrestrial vertebrates because the problems of support and locomotion in these media are quite different. Accordingly, vertebral structure varies widely; yet all vertebrae have many features in common.
Industry:Science
The Gran Telescopio Canarias (GTC, sometimes called GRANTECAN), is a 10.4-m (409-in.) segmented telescope built at the Observatorio del Roque de los Muchachos (ORM), on the island of La Palma in the Canary Islands, Spain. It is considered the largest telescope in the world because of the useful size of its primary mirror. It is also the first segmented telescope built in Europe and is being used as a test bench for the next generation of telescopes, particularly the European Extremely Large Telescope (E-ELT).
Industry:Science
Substances applied to other materials to change the surface properties, such as color, wear, and chemical or scratch resistance, without changing the bulk properties. The terms paint and coatings often are used interchangeably. However, it has become a common practice to use coatings as the broader term and to restrict paints to the familiar architectural and household coatings and sometimes to maintenance coatings for doors and windows, bridges, and tanks. Another common term for paint and coatings is finish.
Industry:Science
The administration of blood or its components as a part of a medical treatment. There are certain fairly well-delineated indications for the use of some form of transfusion. Hemorrhage, severe burns, and certain forms of shock are perhaps the most important conditions for which blood transfusion is utilized. Other disorders in which hemotherapy may be indicated include hemophilia, leukemia, certain anemias, and rare hereditary or familial disorders in which some portion of the blood is lacking or deficient.
Industry:Science
The brightness of an astronomical object, expressed on a unique numerical scale. The stellar magnitude scale is logarithmic and is inverted in that fainter objects have numerically larger magnitudes. The term “magnitude” in this context refers to brightness only and has nothing to do with the size or other quantities. Although used primarily for stars, the stellar magnitude scale can also be used to express the brightness of the Sun, planets, asteroids, comets, nebulae, galaxies, and even background radiation.
Industry:Science
The application of digital computers in engineering design and production. Computer-aided design (CAD) refers to the use of computers in converting the initial idea for a product into a detailed engineering design. The evolution of a design typically involves the creation of geometric models of the product, which can be manipulated, analyzed, and refined. In CAD, computer models and graphics replace the sketches and engineering drawings traditionally used to visualize products and communicate design information.
Industry:Science
