(n.) Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action.
(n.) The mutual or reciprocal action of chemical agents upon each other, or the action upon such chemical agents of some form of energy, as heat, light, or electricity, resulting in a chemical change in one or more of these agents, with the production of new compounds or the manifestation of distinctive characters. See Blowpipe reaction, Flame reaction, under Blowpipe, and Flame.
(n.) An action induced by vital resistance to some other action; depression or exhaustion of vital force consequent on overexertion or overstimulation; heightened activity and overaction succeeding depression or shock.
(n.) The force which a body subjected to the action of a force from another body exerts upon the latter body in the opposite direction.
(n.) Backward tendency or movement after revolution, reform, or great progress in any direction.
Example Sentences:
(1) A 2.5-month-old child with cyanotic heart disease who required long-term PGE1 infusions; developed widespread periosteal reactions during the course of therapy.
(2) We used the polymerase chain reaction (PCR) to amplify the breakpoint area of alpha-thalassemia-1 of Southeast Asia type and several parts of the alpha-globin gene cluster to make a differential diagnosis between alpha-thalassemia-1 and Hb Bart's hydrops fetalis.
(3) The assembly reaction is accompanied by characteristic changes in fluorescence emission and dichroic absorption.
(4) Cantact placing reaction times were measured in cats which were either restrained in a hammock or supported in a conventional way.
(5) The effects of sessions, individual characteristics, group behavior, sedative medications, and pharmacological anticipation, on simple visual and auditory reaction time were evaluated with a randomized block design.
(6) If the method was taken into routine use in a diagnostic laboratory, the persistence of reverse passive haemagglutination reactions would enable grouping results to be checked for quality control purposes.
(7) Because cystine in medium was converted rapidly to cysteine and cysteinyl-NAC in the presence of NAC and given that cysteine has a higher affinity for uptake by EC than cystine, we conclude that the enhanced uptake of radioactivity was in the form of cysteine and at least part of the stimulatory effect of NAC on EC glutathione was due to a formation of cysteine by a mixed disulfide reaction of NAC with cystine similar to that previously reported for Chinese hamster ovarian cells (R. D. Issels et al.
(8) Between 22 HLA-identical siblings and 16 two-haplotype different siblings, a significant difference in concordance of reactions for the B-cell groups was noted.
(9) The second amino acid residue influences not only the rate of reaction but also the extent of formation of the product of the Amadori rearrangement, the ketoamine.
(10) Meanwhile the efficiency of muscarinic antagonists in inhibition of tremor reaction induced by arecoline administration is associated with interaction between the drugs and the M2-subtype.
(11) IgE-mediated acute systemic reactions to penicillin continue to be an important clinical problem.
(12) No reaction product was observed in the lamellar areas.
(13) The content of the cavities was not stained by any of the immunocytochemical reactions applied.
(14) Furthermore, all of the sera from seven other patients with shock reactions following the topical application of chlorhexidine preparation also showed high RAST counts.
(15) Nucleotide, which is essential for catalysis, greatly enhances the binding of IpOHA by the reductoisomerase, with NADPH (normally present during the enzyme's rearrangement step, i.e., conversion of a beta-keto acid into an alpha-keto acid, in either the forward or reverse physiological reactions) being more effective than NADP.
(16) The specific limited trypsinolysis of bacteriophage T7 RNA polymerase (T7RP) was performed in the presence of various components of the polymerase reaction and some GTP-analogs--irreversible inhibitors of the enzyme.
(17) The stopped-flow technique was used to measure the rate constants for the reactions between the oxidized forms of peroxidase with luminol and the following substrates: p-iodophenol, p-bromophenol, p-clorophenol, o-iodophenol, m-iodophenol, luciferin, and 2-iodo-6-hydroxybenzothiazole.
(18) The data are compared with the results from 79 patients with a bipolar depression, 192 with a neurotic depression and 89 with a depressive reaction.
(19) In particular, inflammatory reaction was significantly more frequent and severe in ischemic groups than in controls, independent of the degree of coronary stenosis.
(20) This suggests that Mg2+ accelerated both reactions from a single class of site.
Zero
Definition:
(n.) A cipher; nothing; naught.
(n.) The point from which the graduation of a scale, as of a thermometer, commences.
(n.) Fig.: The lowest point; the point of exhaustion; as, his patience had nearly reached zero.
Example Sentences:
(1) The method is implemented with a digital non-causal (zero-phase shift) filter, based on the convolution with a finite impulse response, to make the computation time compatible with the use of low-cost microcomputers.
(2) Of great influence on the results of measurements are preparation and registration (warm-up-time, amplification, closeness of pressure-system, unhurt catheters), factors relating to equipment and methods (air-bubbles in pressure-system, damping by filters, continuous infusion of the micro-catheter, level of zero-pressure), factors which occur during intravital measurement (pressure-drop along the arteria pulmonalis, influence of normal breathing, great intrapleural pressure changes, pressure damping in the catheter by thrombosis and external disturbances) and last not least positive and negative acceleration forces, which influence the diastolic and systolic pulmonary artery pressure.
(3) The final model has a probability 0.08 of underlying survival time being zero and, given non-zero survival time, takes the form of an exponential distribution with mean of 14.95 months.
(4) Robert Francis QC's official report in February on the Mid Staffordshire care scandal, in which an estimated 400 to 1,200 patients died unnecessarily at Stafford hospital between 2005 and 2008, called for the NHS to make "zero harm" its objective.
(5) Proper maintenance of body orientation was defined to be achieved if the net angular displacement of the head-and-trunk segment was zero during the flight phase of the long jump.
(6) Electromagnetic flow probes with an inner diameter of 2, 1.5 and 1 nm were used for studies on zero-line drifting and for calibration procedures in a series of rats and rabbits.
(7) The open probability is weakly voltage dependent, large at zero and positive potentials (cytoplasm minus SR lumen), and decreasing at negative potentials.
(8) Stepwise depolarizations from the holding potential (-67 to -83 mV) to a potential which varied from -10 to +63 mV resulted in an exponential decline of h from its initial level to a final, non-zero level.
(9) Average increases in nonvellus hair counts between months 4 and 12 were 216, 181, and 264 in the 2% minoxidil, 3% minoxidil, and placebo-to-3% minoxidil crossover groups, respectively, all highly significant differences from zero (p = 0.0001).
(10) For data sampled at a high rate (approximately 200 Hz) pupil velocity deviations from zero can simply be used, giving a satisfactory inaccuracy of about 5 ms. For data sampled at a low rate (less than 50 Hz), e.g.
(11) In 15 patients undergoing aortofemoral bypass, partial thromboplastin time (PTT) tests before and following intravenous administration of 75 U. per kilogram of heparin at zero, 30, 60, 90, and 120 minutes were determined for study of control of anticoagulant adequacy.
(12) As an index of inhomogeneous distribution of inspired air, the mean dilution number (the ratio of the first to zero moments) was calculated from each multibreath nitrogen washout during spontaneous breathing.
(13) Blood pressure was measured with a random-zero sphygmomanometer every 2 weeks of this 8-week trial.
(14) Pairwise correlation between an affected parent and child is zero: The disease is monogenic (no major expression gene).
(15) Where no fluoride was taken zero dmf scores were 41-69 per cent.
(16) He deploys a zero-risk strategy aimed at keeping his rightwing political base behind him, while convincing the public that he alone could lead the country in times of regional turmoil.
(17) Furthermore, the value of the flux ratio for this substance under conditions of zero electrochemical potential across the bowel wall unequivocally demonstrates active transport.
(18) As a result, more and more people are beginning to look towards Irish reunification as being a real possibility.” The overriding issue, however, in this most marginal constituency in Northern Ireland is the old binary, sectarian one: the zero-sum game of orange versus green.
(19) A reduction of tidal volume to zero or an increase by 30% led to a corresponding change of mean carotid artery pH level.
(20) The incidence of probable type B viral hepatitis in patients receiving factor IX concentrate was 13.8 percent (four of 29) versus zero percent (zero of 29) in control patients (difference not significant).