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standard temperature and pressure,

standard conditions for measurement of the properties of matter. The standard temperature is the freezing point of pure water, 0°C; or 273.15°K;. The standard pressure is the pressure exerted by a column of mercury (symbol Hg) 760 mm high, often designated 760 mm Hg. This pressure is also called one atmosphere and is equal to 1.01325×10 6 dynes per sq cm, or approximately 14.7 lb per sq in. The density (mass per volume) of a gas is usually reported as its value at STP. Properties that cannot be measured at STP are measured under other conditions; usually the values obtained are then mathematically extrapolated to their values at STP.
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(1) (Shielded Twisted Pair) Telephone wire that is wrapped in a metal sheath to eliminate external interference. See twisted pair.

(2) See spanning tree protocol and straight through processing.

(3) (Signal Transfer Point) A node in the SS7 telephone network that routes messages between exchanges and between exchanges and databases that hold subscriber and routing information. See SS7, SSP, SCP and AIN.

(4) (Serial ATA Tunneling Protocol) See serial attached SCSI.
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References in periodicals archive ?
Dhakal et al., "Copy number variation in sulfotransferase isoform 1A1 (SULT1A1) is significantly associated with enzymatic activity in Japanese subjects," Pharmacogenomics and Personalized Medicine, vol.
CYP2D6, SULT1A1 and UGT2B17 copy number variation: quantitative detection by multiplex PCR.
Structure of a human carcinogen-converting enzyme, SULT1A1. Structural and kinetic implications of substrate inhibition.
Phenol sulfotransferase (SULT1A1) catalyses sulfuryl group transfer from 3'phosphoadenosine-5'-phosphosulafe (PAPS) to phenolic xenobiotics such as 7-hydroxycoumarin (7HC).
2003 Koreans with 75% various SULT1A1 polymorphisms Arakawa et al.
Finally, genetic polymorphism in major sulfotransferases such as SULT1A1 *2 can decrease conjugating activity 2- to 10-fold (Hildebrandt et al.
At concentrations > 0.15 [micro]M, 3-OH-BaP inhibited its own sulfonation in cytosol fractions that were genotyped for SULT1A1 variants, as well as with expressed SULT1A1*1, SULT1A1*2, and SULT1E1, but not with SULT1A3 or SULT1B1.