activation


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activation

[‚ak·tə′vā·shən]
(chemistry)
Treatment of a substance by heat, radiation, or activating reagent to produce a more complete or rapid chemical or physical change.
(electricity)
The process of adding liquid to a manufactured cell or battery to make it operative.
(electronics)
The process of treating the cathode or target of an electron tube to increase its emission. Also known as sensitization.
(metallurgy)
A process of facilitating the separation and collection of ore powders by the use of substances which change the response of the particle surfaces to a flotation fluid.
A process that increases the rate of pressing and heating a metal powder into cohesion.
(cell and molecular biology)
A change that is induced in an amino acid before it is utilized for protein synthesis.
(nucleonics)
The process of inducing radioactivity by bombardment with neutrons or with other types of radiation.
(physiology)
The designation for all changes in the ovum during fertilization, from sperm contact to the dissolution of nuclear membranes.
References in periodicals archive ?
At TNF[alpha] concentrations associated with maximal transformation response (11 U/mL), NF[kappa]B activation is approximately 70% of maximum.
We are pleased to have been selected to automate activation for Telenet's new Digital TV services, as part of its triple-play offering, enabling rapid time to market and reduced operating costs," said David Sharpley, MetaSolv's executive vice president of marketing and product management.
These data indicated that the cytotoxic effects of reactive oxygen species or bacterial endotoxin are mediated at least in part through activation of the ERK pathway.
In a multivariate logistic regression analysis, TA activation was far and away the strongest independent predictor of empyema, with an associated 15.
The Synchronoss Activation Services Platform has six core components including: Order Manager, Orchestration Gateway, Workflow Manager, Front End Portals, Visibility Manager, and Product Catalogue.
While the MCBS does include an institutionalized population (in health care facilities) and allows proxy respondents for community respondents in poor health, the Patient Activation Supplement requires self-reported beneficiary responses.
Safe Activation can now generate Registered Download URLs to help prevent piracy by controlling access to downloadable files.
Mobilink Infinity is also an advocate of brand activation since its inception.
From October 2011 to December 2011, ActiveSync smartphone activations decreased 10 percent per month, while tablet activations increased 25 percent per month.
The UP-induced constriction of rat pulmonary artery was also attenuated by PD98059 and SB203580 (Figure 3C,D), indicating that activation of ERK1/2 and p38 may mediate UP-induced pulmonary vasoconstriction.
Thus, the pathways for MAP kinase activation seem to be responsible for the specific products secreted by macrophages and the resulting neurotoxicity.
Modifying immune activation seems to be key to controlling viral replication," says Ronald Veazey of the Tulane Regional Primate Center in Covington, La.

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