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NOBS is the main bleach activator used in the U.S.A. and Japan. [4] Compared to TAED, which is the predominant bleach activator used in Europe, NOBS is efficient at much lower temperatures. At 20 °C NOBS is 100 times more soluble than TAED in water. [5]
Activator I was patented by Activator Methods International on September 26, 1978. [ 4 ] [ 7 ] [ 8 ] Activator II was released, with an added "impedance head", in 1994. [ 4 ] Activator V is a cordless electric version that gives off no more than 0.3 J of kinetic energy in a 3-millisecond pulse. [ 4 ]
The overall reaction of TAED (1) with 2 equivalents of hydrogen peroxide gives diacetylethylenediamine (2) and 2 equivalents of peracetic acid (3): Only the perhydroxyl anion, and not the hydrogen peroxide molecule, reacts with the bleach activator. [4]
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Activator Appliance is an Orthodontics appliance that was developed by Viggo Andresen in 1908. This was one of the first functional appliances that was developed to correct functional jaw in the early 1900s. Activator appliance became the universal appliance that was used widely throughout Europe in the earlier part of the 20th century. [1]
Blood samples should be allowed time to form a clot at room temperature for 30–60 min. [6] CDC recommends a range of time to allow clot formation that was reasonably consistent, from a minimum of 30 min to 60 min maximum. [7]
Activator may refer to: Activator (genetics) , a DNA-binding protein that regulates one or more genes by increasing the rate of transcription Activator (phosphor) , a type of dopant used in phosphors and scintillators
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