attenuator


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at·ten·u·a·tor

(ă-ten'yū-ā-tŏr, -tōr),
1. An electrical system of resistors and capacitors used to reduce the strength of electrical signals, as in ultrasonography.
2. The terminator sequence in DNA at which attenuation occurs; located between the operator and the gene for the first protein in an operon.

attenuator

[əten′yo̅o̅·ā′tər]
Etymology: L, attenuare, to make thin
an agent that weakens the toxicity of a poisonous substance or the virulence of a microorganism.

attenuator

a regulatory NUCLEOTIDE sequence occurring in the LEADER REGION of an operon (see OPERON MODEL and containing a TRANSCRIPTION stop signal. The attenuator acts as a fine control mechanism for the activity of structural genes, sometimes being operative, sometimes not, depending on conditions in the cell.
References in periodicals archive ?
Both of these strains had the C to T mutation at position +58 of the attenuator.
8220;Our newest lines of 25, 50 and 100 Watt attenuators are an essential addition to our growing portfolio of RF attenuators,” explains Greg Arnold, Technical Sales Manager at Fairview Microwave.
MEMSCAP's Variable Optical Attenuator dies have been designed to fit most packaging technologies available on the market and in closed loop mode exhibit superior optical power attenuation stability.
The report also estimates 2014-2019 market development trends of Attenuator industry.
Capitalizing on its optical MEMS Intellectual Property in design and manufacturing, MEMSCAP has developed a wide variety of Thermally Actuated Variable Optical Attenuators in both Normally Open and Normally Closed configurations, including different die sizes, with or without metalized backside.
com)-- FiberStore, A leading manufacturer of optical components for the fiber optics and telecommunications industries, announces it has shipped more than 3 hundred thousand MEMS based variable optical attenuators over the last year.
The new multimode-fiber variable optical attenuator will be available in a two-channel and a four-channel version under the product numbers N7766A and N7768A.
Our new medium power attenuators are a great addition to our RF attenuator family," says Gerry Camacho, VP of Technical Services at Pasternack Enterprises, Inc.
Ce Lot consists of two items, namely: Position 1: Rent a truck with attenuator and signaling FLR 4 metresPoste 2: Rent a truck with attenuator and dynamic signaling to 8 meters.
The new design features a thin profile wand detector in a sturdy metal housing with integrated calibration-data storage and an automatic OD3 attenuator On/Off position sensor.
Each of the attenuators feature power control functionality that allows test engineers to set the output power level of the attenuator instead of a known level of attenuation.
Tenders are invited for Attenuator, Type B (Barrel).