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Compression (zoology)
Compression may refer to: Physical science *Compression (physics), size reduction due to forces *Compression member, a structural element such as a column *Compressibility, susceptibility to compression * Gas compression *Compression ratio, of a combustion engine *Compression (geology) *Compression or compressive strength Information science *Data compression, reducing the data required for information *Audio compression (data), reducing the data required for audio * Bandwidth compression *Compression artifact, defect in data due to compression *Image compression, of digital images * Video compression *One-way compression function, a cryptographic primitive *Dynamic range compression, reducing audio dynamic range Medicine * Brain compression, a medical condition *Compression bandage *Pressing on the lower abdominal area in an intravenous pyelogram * Cold compression therapy, for minor injuries Other *Amplifier gain compression, due to nonlinearity * Compression (dance), several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression (physics)
In mechanics, compression is the application of balanced inward ("pushing") forces to different points on a material or structure, that is, forces with no net sum or torque directed so as to reduce its size in one or more directions.Ferdinand Pierre Beer, Elwood Russell Johnston, John T. DeWolf (1992), "Mechanics of Materials". (Book) McGraw-Hill Professional, It is contrasted with tension or traction, the application of balanced outward ("pulling") forces; and with shearing forces, directed so as to displace layers of the material parallel to each other. The compressive strength of materials and structures is an important engineering consideration. In uniaxial compression, the forces are directed along one direction only, so that they act towards decreasing the object's length along that direction. The compressive forces may also be applied in multiple directions; for example inwards along the edges of a plate or all over the side surface of a cylinder, so as to reduce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brain Compression
Brain herniation is a potentially deadly side effect of very high pressure within the skull that occurs when a part of the brain is squeezed across structures within the skull. The brain can shift across such structures as the falx cerebri, the tentorium cerebelli, and even through the foramen magnum (the hole in the base of the skull through which the spinal cord connects with the brain). Herniation can be caused by a number of factors that cause a mass effect and increase intracranial pressure (ICP): these include traumatic brain injury, intracranial hemorrhage, or brain tumor. Herniation can also occur in the absence of high ICP when mass lesions such as hematomas occur at the borders of brain compartments. In such cases local pressure is increased at the place where the herniation occurs, but this pressure is not transmitted to the rest of the brain, and therefore does not register as an increase in ICP. Because herniation puts extreme pressure on parts of the brain and ther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compressor (other)
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A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressor may also refer to: * A device that performs Compression (other) * Compressor (audio signal processor), for dynamic range compression * Compressor (software), a video and audio media compression and encoding application See also * * * Compression (other) * Compaction (other) * Decompression (other) * Expansion (other) * Kompressor (other) * Compressor Hot Springs, a place in California, U.S. * Supercharger * Turbocharger In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression Garment
Compression garments are pieces of clothing that fit tightly around the skin. In medical contexts, compression garments provide support for people who have to stand for long periods or have poor circulation. These come in varying degrees of compression, and higher degree compression sleeves, such as sleeves that provide compression of 20–30 mmHg or higher, typically require a doctor's prescription. Compression garments worn on the legs can help prevent deep vein thrombosis and reduce swelling, especially while traveling. Compression can also be used for post surgeries, to help with the healing process. Garment usage varies per patient but can be worn up to a year. There is also second stage compression garments, that are every day wear. In sports, form-fitting compression sportswear, usually made of spandex, is commonly worn by athletes and in exercise to prevent chafing and rashes. Maternity wear A bellyband, wrap, or abdominal binder is a compression garment which resemble ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compress
compress is a Unix shell compression program based on the LZW compression algorithm. Compared to more modern compression utilities such as gzip and bzip2, compress performs faster and with less memory usage, at the cost of a significantly lower compression ratio. The uncompress utility will restore files to their original state after they have been compressed using the ''compress'' utility. If no files are specified, the standard input will be uncompressed to the standard output. In the upcoming POSIX and Single Unix Specification revision, it is planned that DEFLATE algorithm used in gzip format be supported in those utilities. Description of program Files compressed by ''compress'' are typically given the extension ".Z" (modeled after the earlier pack program which used the extension ".z"). Most ''tar'' programs will pipe their data through ''compress'' when given the command line option "-Z". (The ''tar'' program in its own does not compress; it just stores multi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compaction (other) Compaction may refer to: * Soil compaction, for mechanically induced compaction near the ground surface * Compaction of ceramic powders * Compaction (geology), part of the process of lithification involving mechanical dewatering of a sediment by progressive loading under several km of geomaterial * Waste compaction, related to garbage * Cold compaction, powder compaction at low temperatures * Data compaction, related to computers ** Curve-fitting compaction * Compactor, a device that performs compaction * Compaction a cellular differentiation process in the early embryo See also * Compact (other) Co |
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