control elements - Hutchinson encyclopedia article about control elements Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,579,520,364 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

control
(redirected from control elements)

   Also found in: Dictionary/thesaurus, Medical, Legal, Financial, Encyclopedia, Wikipedia 0.01 sec.

control

In biology, the process by which a tissue, an organism, a population, or an ecosystem maintains itself in a balanced, stable state. Blood sugar must be kept at a stable level if the brain is to function properly, and this steady state is maintained by an interaction between the liver, the hormone insulin, and a detector system in the pancreas.

In the global ecosystem, the activities of the human race are endangering the balancing mechanisms associated with the atmosphere in general and the greenhouse effect in particular.



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.
?Page tools
Printer friendly
Cite / link
Feedback
?Sign in SSL protected
Email:
Password:
Register

Mentioned in?  References in periodicals archive?   Hutchinson browser?   Full browser?
 
The authors cover practical features of stability, reactivity, and workup, as well as such aspects of allylboration as the stereochemical control elements, including relative diastereoselection with crotylboranes, induced (internal) diastereoselection with chiral carbonyl compounds, auxiliary-controlled enantio-selective allylations with chiral borane reagents, and recent advances in catalysis of allylboration.
The development of a technique for identifying control elements that drive the expression of genes in brain cells could unleash the disease-fighting potential of the much-hailed human genome, maintains a study by Oregon Health & Science University, Portland.
Two Tactical Airlift Control Elements (TALCEs) have been positioned to coordinate the arrival of follow-on relief supplies, along with a communications battalion, a survey team, two CH-46 helicopters, six HH-60 helicopters, and sundry relief supplies.
 
 
 
Hutchinson Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.