- 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.
Sources from which energy can be obtained to provide heat, light, and power. The term energy is used to describe an amount of work perfomed. There are two kinds of energy, kinetic energy, meaning work performed by the movement of matter, and potential energy, meaning work that is stored or at rest in matter.
Industry:Science
Materials that are designed to reduce the reflection of electromagnetic radiation from a conducting surface in the frequency range from approximately 100 MHz to 100 GHz. The level of reduction that is achieved varies from a few decibels to greater than 50 dB, reducing the reflected energy by as much as 99.999%.
Industry:Science
Medical bacteriology is the study of bacteria that cause human disease. The field encompasses the detection and identification of bacterial pathogens, determination of the sensitivity and mechanisms of resistance of bacteria to antibiotics, the mechanisms of virulence, and some aspects of immunity to infection.
Industry:Science
Physiological mechanisms for the maintenance of an optimal and constant level of osmotic activity of the fluid within and around the cells, considered to be most favorable for the initiation and maintenance of vital reactions in the cell and for maximal survival and efficient functioning of the entire organism.
Industry:Science
Infection of a bacterium by a bacteriophage with subsequent production of more phage particles and lysis, or dissolution, of the cell. The viruses responsible are commonly called virulent phages. Lytic infection is one of the two major bacteriophage–bacterium relationships, the other being lysogenic infection.
Industry:Science
Over the last two decades, there has been a large increase in the use of explosives by terrorists, manifested in deadly bombings of such targets as passenger airlines, public buildings, and embassies. In response to this threat, existing detection technologies have been improved and new ones are being developed.
Industry:Science
One of the major divisions (formerly known as Equisetophyta) of vascular plants that includes both living and fossil representatives. The three principal orders are Pseudoborniales (Devonian), Sphenophyllales (Devonian-Triassic), and Equisetales (Devonian-Recent); the Hyeniales (Devonian) may also be sphenophytes.
Industry:Science
Radio communication employing amplitude modulation of a radio-frequency carrier wave as the means of conveying the desired intelligence. In amplitude modulation the amplitude of the carrier wave is made to vary in response to the fluctuations of a sound wave, television image, or other information to be conveyed.
Industry:Science
Malfunctions of the organs of digestion from the esophagus to the rectum. The gastrointestinal tract usually functions unnoticed, intruding into consciousness only in the form of specific sensations of hunger, intestinal motion, or the need to defecate. However, it is subject to a wide array of pathologic states.
Industry:Science
Multipurpose instruments used to make measurements on a remote object, often an airborne vehicle. These systems are used to provide two basic types of data: accurate measurement of the position, velocity, and other motion parameters of the target; and information about the target, such as images or optical spectra.
Industry:Science
