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Gamma ray
| Глоссарий медицинских терминов |
A ray which is shorter than an x-ray and is given off by radioactive substances
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Gamma, английский
- Гамма
- Коэффициент “гамма”. показатель скорости изменения дельты в результате незначительных колебаний цены базовых акций. гамма принимает максимальное значение, когда цена лежащих в основе опциона акций приближается к цене страйк, и стремится к нулю, своему мин
- A numerical value, or the degree of contrast in a television picture, which is the exponent of that power law which is used to approximate the curve of output magnitude versus input magnitude over the region of interest.
- A correction of the linear response of a camera in order to compensate for the monitor
- Correction law introduced in the camera output signal to compensate for the non-linearity of the crt (cathode ray tube) in video monitors. a typical gamma value is 0.45, which results in the brightness component of the crt picture appearing to be linear.
- A measure of the amount of contrast found in an image according to the properties of a gradation curve. high contrast has high gamma and low contrast low gamma.
- A correction of the linear response of a camera in order to compensate for the monitor phosphor screen nonlinear response. it is measured with the exponential value of the curve describing the non-linearity. a typical monochrome monitor’s gamma is 2.2, and a camera needs to be set to the inverse value of 2.2 (which is 0.45) for the overall system to respond linearly (i.e., unity).
- The brightness curve of the color spectrum as displayed (or reproduced) on a computer monitor, a printer or scanner.
- Measure of the amount of contrast in an image according to the properties of a gradation curve. high contrast = high gamma and low = low.
- The third letter of the greek alphabet
- The ratio of a change in the option delta to a small change in the price of the asset on which the option is written.
Gamma aminobutyric acid, английский
An amino acid neurotransmitter. abbr gaba
Gamma camera, английский
A camera for taking photographs of parts of the body into which radioactive isotopes have been introduced
Gamma cellulose, английский
One of the three forms of cellulose. with beta cellulose it is called hemicellulose. (also see alpha cellulose and beta cellulose.)
Gamma correction, английский
- A method of correction used in cameras to balance the brightness seen by a camera to that of the monitor.
- Гамма-коррекция, коррекция градации тонов на изображении, обычно с помощью изменения градационных кривых
- Gamma correction controls and adjusts the overall brightness of an image for consistency.
- To provide for a linear transfer characteristic from input to output device.
- An electronic correction carried out by the camera circuitry to balance the brightness seen by the camera to that of the monitor.
- In reference to displaying an image accurately on a computer screen, gamma correction controls the overall brightness of an image. images which are not properly corrected can look either bleached out, or too dark. for more info on gamma, go here
- With reference to displaying an image accurately on a computer screen, gamma correction controls the overall brightness of an image. images which are not properly corrected can look either too dark or bleached out.
- Гамма-коррекция
- Гамма-коррекция; коррекция градации тонов на изображении; модификация уровней яркости промежуточных оттенков серого
- The process of adjusting an image input signal to correctly display on a particular device.
Gamma curve, английский
Gamma equivalent dose, английский
Gamma ferric oxide, английский
Gamma filter, английский
Фильтр "гамма" gamma-generator генератор случайных чисел с гамма-распределением
Gamma globulin, английский
- A protein found in plasma, forming antibodies as protection against infection comment: gamma globulin injections are sometimes useful as a rapid source of protection against a wide range of diseases.
- Гамма-глобулин см. также иммуноглобулины (immunoglobulins (ig)).
Gamma glutamyl transferase, английский
Gamma infinity (rt), английский
The maximum gamma that can be achieved by prolonged development of a photographic film.
Gamma inspection of grain integrity, английский
Рентгенографическая дефектоскопия зарядов (твердого ракетного топлива)
Gamma iron, английский
Iron with face centered cubic structure formed by slow cooling of delta ferrite. this characteristic lattice structure is stable between 906 °c (1663 °f) and 1391 °c (2535 °f). also called austenite. gas metal arc welding (gmaw): inert gas shielded metal joining process that uses a continuous and consumable wire electrode. also called mig (metal inert gas) welding. compare gas tungsten arc welding and shielded metal arc welding. gas tungsten arc welding (gtaw): inert gas shielded metal joining process that uses a nonconsumable tungsten electrode. filler material, when needed, is manually fed into the molten weld puddle. also called tungsten inert gas (tig) welding. compare gas metal arc welding; shielded metal arc welding.
Gamma protein, английский
Protein obtained from soya beans; used as a thickener in water-base paints.
Gamma radiation, английский
Gamma radiography (rt), английский
The process whereby a photographic image of an object is produced by gamma radiation that has penetrated through the object.
Gamma radiography system (rt), английский
All components necessary to make radiographic exposures with gamma radiation, including the exposure device, source assembly, control, and other components associated with positioning the source such as source guide tubes, exposure head, and collimators, if used.
Gamma ramp, английский
A lookup table (lut) of numeric values that is used to compensate for a particular monitor’s color response. the table has three parts (one each for red, green, and blue), and each part has 256 lookup values. a gamma ramp is used to map the range of possible intensities for each color to a limited number (256) of values. an independent hardware vendor (ihv) chooses these values so that the transition from one color intensity to the next is as smooth as possible (since the eye perceives changes in light intensity nonlinearly). gamp (n)
Gamma ray astronomy observatory (program), английский
Программа создания серии астрономических спутников для изучения гамма-излучения
Radioactive, английский
- Radioactive can generally describe the property of a substance (or more accurately atomic nuclei) which are unstable and spontaneously decay (disintegrate) with the release of energy, the energy being either electromagnetic radiation , particulate or both
- Радиоактивный
- Generally, the property possessed by certain elements, such as uranium minerals, of spontaneously emitting alpha, teta, and/or gamma rays by the disintegration of the nuclei of their atoms.
- Atoms that are energetically unstable and decay to a stable condition by emitting radiation are said to be radioactive.
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S b, английский
A reaction of the skin when someone is cold or frightened, the skin being raised into many little bumps by the action of the arrector pili muscles. also called cutis anserina
Discrete rash, английский
A rash which is formed of many separate spots, which do not join together into one large red patch
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