futile cycles การใช้

• This uneconomical process has therefore been called a futile cycle.
• Then the futile cycle begins all over again.
• NNMT affects a biochemical mechanism known as a futile cycle, which plays a role in metabolic regulation.
• Thermogenesis is contributed to by futile cycles, such as the simultaneous occurrence of lipogenesis and lipolysis or glycolysis and gluconeogenesis.
• These controls prevent pyruvate kinase from being active at the same time as the enzymes that catalyze the reverse reaction ( pyruvate carboxylase and phosphoenolpyruvate carboxykinase ), preventing a futile cycle.
• And weight loss without an increase in physical activity is typically doomed, he said, " too often the first half of a futile cycle, followed by weight reaccumulation ."
• This futile cycle between glucokinase and G-6-Pase is named glucose cycling, and it accounts for the difference between the total flux through G-6-Pase and glucose production.
• During reduction reactions, a chemical can enter " futile cycling ", in which it gains a free-radical electron, then promptly loses it to oxygen ( to form a superoxide anion ).
• It is important to note that " carnitine acyltransferase I " undergoes allosteric inhibition as a result of malonyl-CoA, an intermediate in fatty acid biosynthesis, in order to prevent futile cycling between beta-oxidation and fatty acid synthesis.
• This enzyme has a dual function : on one hand, it removes dUTP from the deoxynucleotide pool, which reduces the probability of this base being incorporated into DNA by DNA polymerases, while on the other hand, it produces the dTTP precursor dUMP . Lack or inhibition of dUTPase action leads to harmful perturbations in the nucleotide pool resulting in increased uracil content of DNA that activates a hyperactive futile cycle of DNA repair.
• I'm not sure what your final goal is there, but what I'd suggest is that you make it unnecessary to have any platform = true at all, but leave in the functionality to " allow " platform = true to work so people can create empty columns ( e . g . to continue a table from a previous section ) and also allow platform = false to override the display of a column ( so if someone decides a particular platform isn't being covered much, they can cut out that column without having to take out the specific data about it, so that if more is added later someone can turn it back on again, rather than occasional tidbits being added and taken out in a futile cycle ) talk ) 17 : 02, 21 October 2013 ( UTC)