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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
After completing group analyses of the 18 subjects under each condition (real face, face pareidolia, scrambled face, scrambled pareidolia, S > F, S > P), the activated areas were examined using FSL view; activation under the real-face and face-pareidolia conditions was of primary interest.
It aims to set a new standard in transparency for the activation business, while making the entire process more collaborative and efficient.
High patient activation was defined as level 3 or level 4 on the Patient Activation Measure, and multivariable logistic regression was used to evaluate predictors of patient activation level and the relationship between level of patient activation and clinical remission.
In a multivariate logistic regression analysis, TA activation was far and away the strongest independent predictor of empyema, with an associated 15.8-fold increased risk.
the pre-exponential factor [k.sub.o] from the intercept and the activation energy of the system from the slope of the line obtained from data fitting.
Average maximum deceleration during AEBs in Gs, separated by company and severity of activation. Avg Max Deceleration during AEBs in Gs Company A AEBs Company B AEBs Prior to SCE 0.38 Prior to SCE 0.4 Advisory 0.02 Advisory 0.26 False -0.04 False 0.15 Note: Table made from bar graph.
found that activation in Ml during motor imagery, measured using electrocorticography (ECoG), can be increased via training with feedback and that in some cases it can exceed the original motor execution levels [28].
Recently, an ALE meta-analysis found increased activation in the lateral and medial PFC, parietal cortex, insula, and the caudate and thalamus.[sup][29] However, decreased activation and the effect of different study methods (ROI vs.
The Synchronoss Activation Services Platform delivers a unified and consistent Omni-channel approach to activation and provisioning.
When only few bits are used as the input of activation function, then it makes sense to use combinational approximation based on direct bit level mapping without arithmetic operators.
Loggia explains, 'While upregulation of TSPO is a marker of glial activation, which is an inflammatory state, animal studies have suggested that the protein actually limits the magnitude of glial response after its initiation and promotes the return to a pain-free, pre-injury status.
Piston-driven activation ensures instant activation during launch, without worry of inadvertent activation.

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