| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,753,691,386 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
activation energy |
Also found in: Dictionary/thesaurus, Acronyms, Encyclopedia, Wikipedia, Hutchinson | 0.04 sec. |
|
activation energy Etymology: L, activus, active the energy required to convert reactants to transition-state species or an activated complex that will spontaneously proceed to products. activation the process of activating. activation analysis a method of analyzing the content of elements in samples of biological material. The sample is bombarded with nuclear particles and the elements in it measured by the radiation emitted by their radioactive daughter products. Called also radioactivation analysis. activation energy the difference in energy between the ground state of the reactants in a reaction and the point of maximum energy or transition state of the reactions. Usually lowered by enzyme catalysts. activation factor see hageman factor. activation unit the combination of complement (C4, C2 and C3) that binds to the antigen-antibody complex in the initial reaction step in the classical pathway of complement activation. See also complement. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
In order to obtain an insight on the mechanism of
vulcanization, an 'apparent' activation energy was calculated
by rearrangement of the Arrhenius equation 2 solving for [E. 0] is a normalization
constant, M is mass, E is the activation energy, k is Boltzmann's
constant, and T is body temperature in kelvins.
Table 2
Principal properties in the HTS an SCD databases
Category Examples
Physical Crystallography, grain size,
density, porosity
Mechanical Elasticity (a), strength,
hardness, toughness, creep
Thermal Conductivity, diffusivity,
expansion, specific heat
Corrosion (b) Rate, activation energy, products
Conduction (c) [T. |
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|