| CMNA | complement-mediated neutrophil activation |
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| HIPA | heparin-induced platelet activation |
| INAA | instrumental neutron activation analysis |
| LAG | labiogingival; leukocyte antigen group; linguo-axiogingival; lymphangiogram; lymphocyte activation g... |
| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
| feedback activation | The activation of an enzyme by an end product of a biochemical pathway in which that enzyme plays a part. For example, the activation of factors VIII and V by thrombin during blood clotting. (05 Mar 2000) |
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| feed-forward activation | The activation of an enzyme by a precursor of the substrate of that enzyme. (05 Mar 2000) |
| upstream activation site | A DNA sequence that regulates transcription like an enhancer but does notwork if its located downstream from a promoter. (09 Oct 1997) |
| low-activation materials | <radiobiology> In fission reactors, one is forced to deal with the radioactive byproducts of the fission process, but in fusion reactors one generally has a choice of what materials to expose to neutrons produced by the fusion process. A major problem for fusion reactors is developing materials (such as for the reactor vacuum vessel structure) which can be exposed to high levels of neutron bombardment without becoming permanently radioactive. Candidate structural materials which have relatively low induced radiactivation (generally relative to stainless steel) are known as low-activation materials, these include titanium, vanadium, and silicon-carbide. (09 Oct 1997) |
| lymphocyte activation | <haematology> The change in morphology and behaviour of lymphocytes exposed to a mitogen or to an antigen to which they have been primed. The result is the production of lymphoblasts, cells that are actively engaged in protein synthesis and that divide to form effector populations. Should not be confused with transformation of the type associated with oncogenic viruses and activation is therefore perhaps a better term. (18 Nov 1997) |
| activation energy |
Energy needed to initiate a chemical reaction.
Ãâó: helios.bto.ed.ac.uk/bto/glossary/ab.htm
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| activation energy |
Energy needed to make substrate molecules more reactive eg. enzymes function by lowering activation energy.
Ãâó: www.pestmanagement.co.uk/lib/glossary/glossary_a.s...
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| activation energy |
The energy that must be provided to the reactants in a chemical reaction to reach an intermediate or activated state from which the products of the reaction can form.
Ãâó: xenon.che.ilstu.edu/genchemhelphomepage/glossary/a...
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| activation energy |
(ΔG ‡ ) The minimum energy required in order for reacting species to form an activated complex.
Ãâó: www.everyscience.com/Chemistry/Glossary/A.php
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| activation energy |
The minimum amount of energy needed for a chemical reaction to take place. For some reactions this is very small (it only takes a spark to make gasoline burn). For others, it's very high (when you burn magnesium, you need to hold it over a Bunsen burner for a minute or so).
Ãâó: misterguch.brinkster.net/vocabulary.html
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