- 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 branch of applied mechanics which deals with the interaction of aerodynamic, inertial, and structural forces. It is important in the design of airplanes, helicopters, missiles, suspension bridges, power lines, tall chimneys, and even stop signs. Variations on the term aeroelasticity have been coined to denote additional significant interactions. Aerothermo-elasticity is concerned with effects of aerodynamic heating on aeroelastic behavior in high-speed flight. Aeroservoelasticity deals with the interaction of automatic controls and aeroelastic response and stability.
Industry:Science
The flow behavior of non-newtonian fluids. Many important flow problems of practical significance cannot be treated within the framework of classical fluid mechanics, which rests on the application of the Navier-Stokes equations, comprising the continuum equations of motion together with Newton's law of viscosity. Non-newtonian flow, by definition, is concerned with fluids which do not have a constant viscosity in accordance with Newton's law. Some other rheological equation is required which describes the behavior of the fluid, and this is invariably more complicated.
Industry:Science
The flow of lava across the surface of the Earth and other planetary bodies is governed by the rheology (flow behavior) of the melt and the surface conditions present during eruption. High-resolution images of Venus, Mars, and Io (satellite of Jupiter) acquired during the past decade clearly show that lava flow is perhaps the most important process in the creation of rocky planetary surfaces. Detailed studies of the processes involved in lava flow are needed to better understand the evolution of our neighboring planets and to better mitigate volcanic hazards on the Earth.
Industry:Science
The general perceptual behavior and the specific responses that are made in relation to sound stimuli. The auditory system consists of the ear and the auditory nervous system. The ear comprises outer, middle, and inner ear. The outer ear, visible on the surface of the body, directs sounds to the middle ear, which converts sounds into vibrations of the fluid that fills the inner ear. The inner ear contains the vestibular and the auditory sensory organs. The vestibular organ's function is the key to balance: this organ converts movements of the head into nerve signals.
Industry:Science
The classification, nomenclature, and identification of bacteria; sometimes used as a term to indicate the theory of classification. The bacteria are members of the kingdom Prokaryotae, which is defined in terms of the unique structural and biochemical properties of their cells; more specifically, the organization of the deoxyribonucleic acid (DNA) in the nucleus, the lack of a nuclear membrane, the lack of independent membrane-bounded cytoplasmic organelles, the lack of endocytosis and exocytosis, and the chemical nature of some components of plasma membrane and cell walls.
Industry:Science
Stereoscopic displays allow observers to perceive depth effects and enable them to visualize information with ever-increasing complexity in three-dimensional (3D) space. The proliferation of 3D displays has been driven mainly by the tremendous potential of virtual reality and augmented reality (VR/AR) for a wide spectrum of application areas such as scientific visualization, engineering design, training and education, and entertainment. Rapid developments in 3D graphics capabilities on personal computers have further expedited the popularity of stereoscopic display techniques.
Industry:Science
The apparent passage of a celestial body across the apparent disk of a larger body, such as a planet across its parent star or of a satellite across its parent planet; also, the apparent passage of a celestial object or reference point across an adopted line of reference in a celestial coordinate system. Classically, the observed data were instants of internal and external tangency of the disks (contacts) at ingress and egress of the smaller body. In the modern era, data may also include the differential brightness of the two disks and the duration of any change of brightness.
Industry:Science
The condition in which the entire body of an adult animal or plant consists of a fixed number of cells that is the same in all members of the species. This phenomenon is also called eutely. The largest group of animals exhibiting eutely are the nematode worms, one of the largest of all animal phyla, and of great medical and agricultural importance as parasites of plants, animals, and humans. A plant that exhibits eutely is usually called a coenobium. Many species of semimicroscopic aquatic green algae exist as coenobia, such as the common <i>Volvox</i> and <i>Pandorina</i>.
Industry:Science
The fifth period of the Paleozoic Era. The Carboniferous Period spanned from about 355 million years to about 295 million years ago. The rocks that formed during this time interval are known as the Carboniferous System; they include a wide variety of sedimentary, igneous, and metamorphic rocks. Sedimentary rocks in the lower portion of the Carboniferous are typically carbonates, such as limestones and dolostones, and locally some evaporites. The upper portions of the system are usually composed of cyclically repeated successions of sandstones, coals, shales, and thin limestones.
Industry:Science
The cultivation of fresh-water and marine species (the latter type is often referred to as mariculture). The concept of aquaculture is not new, having begun in China about 4000 years ago, and the practice of fish culture there has been handed down through the generations. China probably has the highest concentration of aquaculture operations in a single country today. Yet the science of aquaculture, as a whole, is far behind that of its terrestrial counterpart, agriculture. Aquaculture, though still partly art, is being transformed into a modern, multidisciplinary technology.
Industry:Science