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

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 ?
The company's major product lines include desiccant and heat recovery wheels, acoustic panels and sound attenuators, packaged ventilation equipment, and spiral, round and oval duct.
We are a 30-year-old family-run business, primarily into manufacturing HVAC air vents, ducting accessories, fire and safety, sound attenuators and other HVAC ancillary devices.
Tempmaster was the first to develop and market very effective, low air pressure drop sound attenuators called Acousti-Cells.
This includes thermal insulation, acoustic insulation, fixing accessories such as volume control dampers, motorised dampers, fire dampers, access doors, sound attenuators and other elements," he said.Kumar explained that since the prefabrication is done in a controlled factory environment it offers greater productivity, consistently high quality of products and much faster delivery to the site.