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TetR protein family members are mostly transcriptional repressors, meaning that they prevent the expression of certain genes at the DNA level. These proteins can act on genes with various functions including antibiotic resistance, biosynthesis and metabolism, bacterial pathogenesis, and response to cell stress.
The IUPAC numerical multiplier is a system of prefixes used in chemistry to indicate the number of atoms or groups in a molecule.
Work started on the development of the TETRA standards in 1990 and has relied on the support of the European Commission and the ETSI members. Experience gained in the development of the GSM cellular radio standard, as well as experience from the development and use of trunked radio systems has also been used to fashion the TETRA standard. In ...
Business communication meets IBCS standards if it adheres to the rules of the following three pillars: Conceptual rules assist in the clear transmission of content by providing an appropriate storyline. These rules draw on the work of authors such as Barbara Minto. [1] Based on scientific studies and practical experience, they are widely ...
MPT 1327 [1] is an industry standard for trunked radio communications networks.. First published in January 1988 by the British Radiocommunications Agency, and is primarily used in the United Kingdom, Europe, South Africa, Australia, New Zealand and China.
Tetra, a genus of mites in the family Eriophyidae; Tetra (monkey), a rhesus macaque that was the first successfully birthed primate created via an artificial cloning technique; Tetra (unit), a proposed unit of information by Donald Knuth denoting 32 bits; Mitsubishi TETRA, a concept car first exhibited in 1997
The same suffix may be used with more than one category of number, as for example the orginary numbers secondary and tertiary and the distributive numbers binary and ternary. For the hundreds, there are competing forms: Those in -gent- , from the original Latin, and those in -cent- , derived from centi- , etc. plus the prefixes for 1 through 9 .
The range of frequencies used in these tetra systems are defined by 380-385 MHz for the uplink (mobile to radio base station) paired with 390-395 MHz for the downlink (radio base station to mobile). Therefore, the base frequency f b is 300 MHz (the baseband frequency to relate from) and the offset is 0.0125 MHz (12.5 kHz) and thus we get the ...