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(organic chemistry)
In stereochemistry, on the opposite side of a reference plane; for example, the stereochemical outcome of an addition reaction where the new bonds are on the opposite side of the original pi bond is called anti addition.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


G-LOCclick for a larger image
Relationship between acceleration and time at maximum G required to produce symptoms of gray out and black out.
A g-induced (centrifugal acceleration) loss of consciousness. A condition that occurs when the g loading is above 5 or 6 continuously for more than 5 to 7 s. Unconsciousness follows because of the temporary stoppage of the blood supply to the brain. However, this phenomenon does not occur if the buildup of g is very rapid only momentarily, as during ejection. The chances of G-LOC can be minimized by use of anti-g suits, anti-g maneuvers, and a higher level of physical fitness. See also anti-g suits.


A piece of clothing worn by combat pilots and astronauts. It exerts pressure on the abdomen and the lower limbs of the aircrew to prevent or retard the flow of blood below the chest when under positive acceleration. This delays the onset of the gray-out or blackout phenomena some pilots may experience. A g-suit increases the gray-out or blackout threshold by 1¼ to 2 g. The same as anti-g suit.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
ACR and European League Against Rheumatism (EULAR) together developed new set of classification criteria for RA which included that anti CCP antibodies detection be used for RA diagnosis13.
The RF and anti CCP antibodies as tools for RA diagnosis have been evaluated by a number of studies and it was found that anti CCP antibodies have higher specificity as compared to RF for RA diagnosis14.
The seminal project was OMA's Jussieu Library competition entry (on which Maas anti van Rijs worked when with OMA).
Having touched on reasons for the architectural vitality of the Netherlands anti some characteristics common to buildings in this issue, we should ponder the general topicality anti lasting relevance of work which is outrageously experimental anti conceptually challenging.
Some psychiatric studies, along with much of today's anti abortion literature, tend to cast women who have abortions into one of two roles: victim or deviant (although these terms are not necessarily used).