- (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription
- An activator is a DNA-binding protein that regulates one or more genes by increasing the rate of transcription. The activator may increase transcription by virtue of a connected domain which assists in the formation of the RNA polymerase holoenzyme, or may operate through a coactivator. ...
- In phosphors and scintillators, the activator is the element added as dopant to the crystal of the material to create desired type of nonhomogeneities.
- Enzyme activators are molecules that bind to enzymes and increase their activity. These molecules are often involved in the allosteric regulation of enzymes in the control of metabolism. ...
- (The Activators) The Activators are a children's entertainment group whose mission is to combat childhood obesity by engaging young children ages two to six in physical activity.
- (Activators) Chemicals which can be applied directly to a surface, substrate or mixed with an adhesive to speed up the solidification of an adhesive.
- (Activators) 1 Added active items which enable an otherwise inert material to demonstrate improved properties, eg cement with ground granulated blast-furnace slag. 2 see 'regulators'.
- (Activators) are toy vehicles with instant transformation at the push of a button.
- One or more ingredients in a flux that create a wettable surface for solder, by removing oxides and possibly other contaminants when coming into contact with the metal on the parts to be soldered. ...
- A chemical used in elastomer compounding in small quantities to increase the effectiveness of an accelerator. (Example, stearic acid.)
- A chemical added to a pesticide to increase its activity.
- Curing agent of a two pack coating system.
- Chemical ingredients added to hair products to speed up a specific process (i.e., curl activators, heat activators) without damaging the hair.
- A protein that binds to DNA and stimulates transcription of a specific gene.
- A protein transcription factor with a positive effect on gene expression. (Compare repressor.) An activator may work in conjunction with one or more co-activators. ...
- A chemical additive used to initiate the chemical reaction in a specific chemical mixture.
- Shock or MPS (Monopersulfate), used as an oxidizer for sanitation of spas.
- a substance (as a chloride ion) that increases the activity of an enzyme (compare COENZYME); a substance given off by developing tissue that stimulates differentiation of adjacent tissue ; also : a structure giving off such a stimulant
- activators are additives to the compost pile which contain a nitrogen source or sugars. Their purpose is to increase microbial activity. Generally, adequate nitrogen organic waste is the only activator needed. ...
- A removable growth guidance orthodontic appliance, originally developed by Pierre Robin, Viggo Andresen and Karl Haupl, with later modifications by Schwarz, Bimler, Balters, Franker, Fleischer, Peters, etc. Also called a functional appliance.
- An Activator is anything that snaps a person out of Alpha Mode and into Beta. Any time something familiar, unusual, or problematic enters the Reticular Activator, the brain becomes “activated,” hence the name.
- Particle in a fluorescent substance that causes the substance to glow when exposed to ultraviolet light.
- An instrument which utilizes a light force to adjust the spine. It is also the name of a chiropractic technique which focuses on the use of this instrument. It was designed by Dr. Arlan Fuhr, and delivers a quick and precise adjustment to the spine to help reduce subluxations.
- chemical which initiates the vulcanization of an elastomer.
- A device that enables an EAS security label to go from an inactive to an active state.