Suppression


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suppression

[sə′presh·ən]
(computer science)
Removal or deletion usually of insignificant digits in a number, especially zero suppression.
Optional function in either on-line or off-line printing devices that permits them to ignore certain characters or groups of characters which may be transmitted through them.
(electronics)
Elimination of any component of an emission, as a particular frequency or group of frequencies in an audio-frequency of a radio-frequency signal.

Suppression

 

in genetics, a phenomenon that prevents the appearance of a character resulting from mutation and that causes partial or complete restoration of the normal phenotype.

Intragenic suppression is caused by a second (suppressor) mutation in the same gene in which the first (direct) mutation occurred. Intergenic suppression is caused by a second mutation in other genes that are located at a considerable distance from the suppressed gene. In intragenic suppression, a protein coded by a given gene can reacquire functional activity, although its original structure, in contrast to true reverse mutation, or reversion, is not restored. In intergenic suppression, the normal phenotype may be restored in some cases owing to mutations that permit other means of metabolism which do not require the functioning of the given gene. In other cases, the normal phenotype may be restored as a result of mutations that alter the process by which the genetic information of the mutant gene is realized.

The phenomenon of suppression, first discovered in 1920 by the American geneticist A. H. Sturtevant, is used to study the genetic code and other aspects of molecular genetics.

REFERENCE

Stent, G. Molekuliarnaia genetika. Moscow, 1974. Chapter 6. (Translated from English.)

I. I. TOLSTORUKOV

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A negative factor cited by a prominent conventional suppression system manufacturer is: "Fusible links loaded with grease and other extraneous material can result in excessive delays in actuation.
Among them, four patients whose EEG clearly showed a burst suppression pattern were selected for the qEEG analysis in this study, using artifact-free EEG segments for at least 20 minutes chosen by an expert neurologist (H.
If the treated area experiences a wildfire, then changes in suppression costs (relative to an untreated landscape) may occur.
Chapter 3, on Regional and Temporal Trends in Wildfire Suppression Expenditures, examines among other things whether in the western forest regions of the USA the year-on-year and regional variation in suppression expenditures can be adequately predicted and explained.
The strength of my recommendation for exemestane plus ovarian function suppression following chemotherapy will be greater in that woman; I'll feel like maybe I should be recommending it rather than discussing it, because the advantage is so great.
In the second set of tests performed in Mount Baker Ridge Tunnel in June, 2013, one zone of the fixed fire suppression system is tested on a live fire to determine the efficacy of the system and in tandem with the transverse ventilation system to determine the drift of the water droplets.
5%) met criteria for viral suppression [less than or equal to] 15 months after diagnosis.
One participant was excluded from the analyses because the number of target thoughts during thought suppression deviated more than 3 standard deviations from the mean.
He or she needs to weigh up support for suppression versus the public's right to know, as well as the seriousness of the offending, the potential impact on a person's professional career and impact on family.
05) between acid suppression and CDI, with pooled effect estimates of 1.