What's the difference between decay and scavenger?

Decay


Definition:

  • (v. i.) To pass gradually from a sound, prosperous, or perfect state, to one of imperfection, adversity, or dissolution; to waste away; to decline; to fail; to become weak, corrupt, or disintegrated; to rot; to perish; as, a tree decays; fortunes decay; hopes decay.
  • (v. t.) To cause to decay; to impair.
  • (v. t.) To destroy.
  • (n.) Gradual failure of health, strength, soundness, prosperity, or of any species of excellence or perfection; tendency toward dissolution or extinction; corruption; rottenness; decline; deterioration; as, the decay of the body; the decay of virtue; the decay of the Roman empire; a castle in decay.
  • (n.) Destruction; death.
  • (n.) Cause of decay.

Example Sentences:

  • (1) Q In radioactive decay, different materials decay at different rates, giving different half lives.
  • (2) 4) Parents imagined that fruit drinks, carbonated beverages and beverages with lactic acid promoted tooth decay.
  • (3) In the absence of prostigmine, increasing the concentration of ACh in the synaptic cleft did not change the time constant for decay of end-plate currents.
  • (4) The kinetics of bimolecular decay of alpha-tocopheroxyl free radicals (T) was studied by ESR mainly in ethanol and heptanol solvents.
  • (5) For those synapses that were close to the soma the time constant for decay for the non-NMDA component, which was voltage insensitive, ranged from 4-8 ms. 7.
  • (6) In analyzing the results with any regimen it is important to have long follow-up since late relapses do occur and initial very positive results tend to decay with greater numbers of patients treated.
  • (7) In one normal ear, ten noise trauma ears, 11 Meniere disease ears, and 24 eighth nerve lesion ears to reflexes or reflex decay that were suggestive or retrocochlear lesions were observed.
  • (8) Biochemical, molecular, and immunohistologic studies have identified membrane cofactor protein (MCP) and decay accelerating factor (DAF) on trophoblast cells, which could assist in preventing lysis of the cells by complement-activating maternal antibodies.
  • (9) It has been 40 years since the first community in the United States added a regulated amount of fluoride to its public water supply to prevent tooth decay.
  • (10) This could reflect the existence of a parallel set of synapses with fast decay that serve as a shortterm store.
  • (11) However, clemastine caused a decay in subjects' performance in both Experiments I and II, but only on the tracking task.
  • (12) The nylon group had the second highest amount of induced WTR cylinder at one day, which had decayed to ATR cylinder by five months.
  • (13) The observed signals from germinating seeds of Phaseolus aures and decaying leaves of Eucalyptus are presented to show that the signals have characteristic kinetics and intensity.
  • (14) We develop an analogy between the steric hindrance among receptors detecting randomly placed haptens and the temporary locking of a Geiger counter that has detected a radioactive decay.
  • (15) Left ventricular relaxation rate was measured by calculation of a time constant of left ventricular pressure decay (T) derived from an exponential curve fit to the digitized tip-micromanometer left ventricular pressure signal.
  • (16) Factors increasing presynaptic activity (frequency or number of afferent stimulations) during the induction event did not affect the relative amount of LTP decay.
  • (17) Inhibitor activity decayed with time after radiation (2 Gy) with no activity detected at 6 h even though the cells remained in G2 phase, suggesting that either synthesis or activation of additional components is necessary for recovery from G2 arrest.
  • (18) These results are consistent with the previous observation in HTC cells that the decay rate of ODC activity in the presence of cycloheximide correlated well with the proportion of ODC present as a complex with antizyme, suggesting the ubiquitous role of antizyme in ODC degradation.
  • (19) The outward current decays exponentially with an early and late phase.
  • (20) The decay of acid soluble radioactivity was similar in the two groups, although protein synthesis was lowered by vitamin A deficiency.

Scavenger


Definition:

  • (v.) A person whose employment is to clean the streets of a city, by scraping or sweeping, and carrying off the filth. The name is also applied to any animal which devours refuse, carrion, or anything injurious to health.

Example Sentences:

  • (1) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
  • (2) The role of O2 free radicals in the reduction of sarcolemmal Na+-K+-ATPase, which occurs during reperfusion of ischemic heart, was examined in isolated guinea pig heart using exogenous scavengers of O2 radicals and an inhibitor of xanthine oxidase.
  • (3) This may be due to DMSO's ability to scavenge free radicals.
  • (4) As calls grew to establish why nobody stepped in to save Daniel, it was also revealed that the boy's headteacher – who saw him scavenging for scraps – has not been disciplined and has been put in charge of a bigger school.
  • (5) It may be due to relative nonreactivity of ascorbic acid free radical that free radical chain reactions, found commonly in radical chemistry, do not occur in the scavenging reaction by ascorbic acid.
  • (6) The free radical scavengers mannitol, thiourea, benzoate, and 4-methylmercapto-2-oxobutyrate protected either native cells exposed to H2O2 or pretreated hepatocytes exposed to H2O2 and given ferric or ferrous iron.
  • (7) Also skeletal muscle necrosis can be reduced if these scavengers are provided in high concentration during reperfusion.
  • (8) The oxygen-free radical scavengers thiourea, mannitol and catalase prevented toxicity mediated by ferrous ammoniumsulphate but not by ferrous ascorbate (molar ratio of 1:20).
  • (9) On the basis of these results it is suggested that (+)-cyanidanol-3 treatment protects brain suspensions against lipid peroxidation by acting as a free radical scavenger in vitro.
  • (10) However, two observations suggested that surface epithelial loss alone was not sufficient to trigger the proliferative response to DOC: intracolonic instillation of DOC followed by removal of the DOC solution at 1 h, at which time surface epithelial loss was maximal, did not result in an increase in ornithine decarboxylase activity or [3H]dThd incorporation into DNA when these parameters were assessed at 4 h or 12 to 48 h, respectively; phenidone, an antioxidant and radical scavenger, and bis[(3,5-diisopropyl-salicylato) (O,O) copper(II), a lipophilic agent with superoxide dismutase activity, abolished the DOC mediated proliferative response but did not prevent the early loss of surface cells.
  • (11) The theoretical calculations refer to a simple aqueous system containing DNA molecules and scavenger (Tris).
  • (12) The sulfhydryl enzyme malate synthase was inactivated by X-irradiation in air-saturated aqueous solution, in the absence or presence of a variety of additives (thiols, antioxienzymes, typical radical scavengers, inorganic salts, buffer components, substrates, products, analogues).
  • (13) Thus, GSH appears to suppress the toxicity of 6-OH-DA, probably by scavenging the toxic species formed during 6-OH-DA oxidation.
  • (14) Under physiological conditions the platelet 5HT-system may have a role as a scavenger for free extracellular 5HT and in hemostasis.
  • (15) Our model is a development of previous models, but differs in several respects: the overall activity is assumed to be dependent on the error level, the effect of errors in the translating system, giving rise to additional errors in the succeeding generation of products, is explicitly included as a special term in our model, and scavenging enzymes are assumed to break down and eliminate products with a loose structure.
  • (16) The radiobiological effect of alcohols is normally attributed either to radical scavenging or to oxidation.
  • (17) The present work reviews the evidence for an involvement of free radicals in the pathophysiology of chronic pancreatitis and the potential of treatment with antioxidant and scavenger substances.
  • (18) In models of prolonged ischemia (2 hours) followed by reperfusion, we have not observed a beneficial effect of scavengers on stunned myocardium.
  • (19) Formation of 2,5-DHB was inhibited by CO, metyrapone and SKF-525A, but not by the .OH scavengers mannitol and formate or by the iron chelator desferrioxamine.
  • (20) The pharmacologic modification of this injury process, with agents that scavenge these reactive oxygen metabolites, block their generation, or enhance the endogenous antioxidant capability, has shown great promise in animal models of common clinical conditions, and has already been successfully applied in controlled clinical trials.