attenuation mechanism

механизм затухания

English-Russian dictionary of geology. 2011.

Смотреть что такое "attenuation mechanism" в других словарях:

  • Attenuation — This article is about attenuation in physics. For other uses, see Attenuation (disambiguation). In physics, attenuation (in some contexts also called extinction) is the gradual loss in intensity of any kind of flux through a medium. For instance …   Wikipedia

  • attenuation — (ah ten u a shun) 1. A mechanism for the regulation of transcription of some bacterial operons by aminoacyl tRNAs. 2. A procedure that reduces or abolishes the virulence of a pathogen without altering its immunogenicity …   Dictionary of microbiology

  • attenuation — A mechanism for controlling gene expression in prokaryotes that involves premature termination of transcription …   Glossary of Biotechnology

  • Computation of radiowave attenuation in the atmosphere — One of the causes of attenuation of radio propagation is the absorption by the atmosphere. There are many well known facts on the phenomenon and qualitative treatments in textbooks.[1] A document published by the International Telecommunication… …   Wikipedia

  • Attenuator (genetics) — The attenuator plays an important regulatory role in prokaryotic cells because of the absence of the nucleus in prokaryotic organisms. The attenuator refers to a specific regulatory sequence that, when transcribed into RNA, forms hairpin… …   Wikipedia

  • Trp operon — If unfamiliar with these terms, visit the operon page first.Trp operon is an operon in bacteria which promotes the production of tryptophan when tryptophan isn t present in the environment. Discovered in 1953 by Jacques Monod and colleagues, the… …   Wikipedia

  • sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… …   Universalium

  • Sound — /sownd/, n. The, a strait between SW Sweden and Zealand, connecting the Kattegat and the Baltic. 87 mi. (140 km) long; 3 30 mi. (5 48 km) wide. Swedish and Danish, Oresund. * * * I Mechanical disturbance that propagates as a longitudinal wave… …   Universalium

  • Transparency and translucency — Diaphanes redirects here. For the genus of firefly, see Diaphanes (beetle). Translucence redirects here. For other uses, see Translucence (disambiguation). Translucent redirects here. For the Japanese manga series, see Translucent (manga).… …   Wikipedia

  • Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( …   Wikipedia

  • earthquake — /errth kwayk /, n. 1. a series of vibrations induced in the earth s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. [1300 50; ME erthequake …   Universalium

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