منابع مشابه
Structural Analysis of the Exhaust Gas Silencer for the Flow through Perforated and Non-perforated Silencer
To minimize unwanted noise, the exhaust gas of high pressure and high temperature coming out of internal combustion engine passes through silencer. Various types of silencers like absorptive, reactive and resonating, perforated type are widely implemented in actual practice .perforated reactive mufflers have an effective damping capability. This paper deals with comparative structural analysis ...
متن کاملRE-1 silencer of transcription/neural restrictive silencer factor modulates ectodermal patterning during Xenopus development.
RE-1 silencer of transcription/neural restrictive silencer factor (REST/NRSF), a transcriptional repressor, binds to the RE-1 element present in many vertebrate genes. In vitro studies indicate that REST/NRSF plays important roles in several stages of neural development. However, a full understanding of its physiological function requires in vivo approaches. We find that impairment of REST/NRSF...
متن کاملEffect of silencer on polyomavirus DNA replication.
We have cloned the cellular sequence termed box DNA from the enhancer region of polyomavirus F9 mutant fPyF9. Box DNA functions as a negative transcriptional element (silencer) in undifferentiated F9 cells but not in differentiated L cells. Plasmid DNAs containing the origin and enhancer of polyomavirus were used to measure simultaneously transcriptional and replication activities in transfecte...
متن کاملOptimization of a clamped plate silencer.
A previous theoretical study [L. Huang, J. Acoust. Soc. Am. 119, 2628-2638 (2006)] shows that, in a duct, a simply supported plate covering a side-branch rigid cavity can function effectively as a wave reflector over a broad range of low to medium frequencies. In this study, analytical formulation is extended to the boundary condition of clamped plate, which is easier to implement in practice. ...
متن کاملTranscriptional "silencer" element in rat repetitive sequences
The enhancer elements from either simian virus 40 or murine sarcoma virus activate the expression of a transfected rat insulin 1 (r11) gene when placed within 2.0 kilobases or less of the rl1 gene cap site. Inclusion of 4.0 kilobases of upstream r11 sequence, however, results in a substantial reduction in the enhancer-dependent insulin gene expression. These observations suggested that a negati...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1995
ISSN: 0001-4966
DOI: 10.1121/1.413998