(1) Theophylline kinetics, as an in vivo probe for the potentially toxic cytochrome P-450I pathway of drug metabolism, were studied in 11 healthy volunteers and 11 patients with calcific chronic pancreatitis at Madras, South India.
(2) The testing of other models and their failure to describe the kinetic observations are discussed.
(3) To clarify the functional roles of His40, Glu58, and His92, we analyzed the consequences of several amino acid substitutions (His40Ala, His40Lys, His40Asp, Glu58Ala, Glu58Gln, and His92Gln) on the kinetics of GpC transesterification.
(4) Rise time and fall time constants have been quantified for describing kinetics of response.
(5) The enzyme, when assayed as either a phospholipase A2 or lysophospholipase, exhibited nonlinear kinetics beyond 1-2 min despite low substrate conversion.
(6) 1 The effects of chronic ethanol intake on the elimination kinetics of antipyrine were determined in nineteen male alcoholic subjects with comparison made to fourteen male volunteers.
(7) The addition of a cerebral blood volume (CBV) compartment in the [18F]2-fluoro-2-deoxy-D-glucose (FDG) model produces estimates of local CBV simultaneously with glucose metabolic rates when kinetic FDG studies are performed.
(8) Stability of kinetic constants for a long period of time is demonstrated.
(9) Kinetic analysis showed that the activators did not affect the Km for glycogen synthase D, for either enzyme.
(10) The kinetics of endocytosis and recycling of the wild-type and mutant receptors were compared.
(11) The kinetic parameters for the hydrolysis of type I, II and III collagens have been measured and are similar in magnitude to those for the tissue collagenases.
(12) Equilibrium and kinetic studies of the interaction of gene 32 protein of T4 phage with single-stranded fd DNA were performed monitoring the changes in protein fluorescence.
(13) The influence of vestibular dysfunction upon the vestibulospinal reflex (VSR) in two common peripheral syndromes was investigated by two types of posturographic examination: "static" posturography, recording and analyzing the postural sway in stance, and "kinetic" posturography, recording the stepping in place test.
(14) Analysis of enzyme kinetic properties revealed a Km of 0.7 mM for CO and of 65 microM for methyl viologen.
(15) The kinetic properties of the cell-free extracts fit mathematical models developed for in vitro systems reconstituted from purified enzymes.
(16) Kinetics of the insulin effect on MeAIB uptake were characterized by an increased Vmax.
(17) Typical kinetics of local anaesthetics are presented for various methods of regional anaesthesia informing the anaesthetist on corresponding plasma concentrations if the recommended maximum doses are exceeded and thus he gets useful information for his daily work.
(18) In this study, protein efficiency ratio and net protein utilization together with the kinetic estimates of protein turnover were used to compare the effect of different protein and fat sources in healthy rats.
(19) The kinetics of bimolecular decay of alpha-tocopheroxyl free radicals (T) was studied by ESR mainly in ethanol and heptanol solvents.
(20) The kinetics of the luminescent signal with the different luciferin esters varied significantly, indicating possible differences in the rates of uptake, breakdown and enzyme inhibition.
Rate
Definition:
(v. t. & i.) To chide with vehemence; to scold; to censure violently.
(n.) Established portion or measure; fixed allowance.
(n.) That which is established as a measure or criterion; degree; standard; rank; proportion; ratio; as, a slow rate of movement; rate of interest is the ratio of the interest to the principal, per annum.
(n.) Valuation; price fixed with relation to a standard; cost; charge; as, high or low rates of transportation.
(n.) A tax or sum assessed by authority on property for public use, according to its income or value; esp., in England, a local tax; as, parish rates; town rates.
(n.) Order; arrangement.
(n.) Ratification; approval.
(n.) The gain or loss of a timepiece in a unit of time; as, daily rate; hourly rate; etc.
(n.) The order or class to which a war vessel belongs, determined according to its size, armament, etc.; as, first rate, second rate, etc.
(n.) The class of a merchant vessel for marine insurance, determined by its relative safety as a risk, as A1, A2, etc.
(v. t.) To set a certain estimate on; to value at a certain price or degree.
(v. t.) To assess for the payment of a rate or tax.
(v. t.) To settle the relative scale, rank, position, amount, value, or quality of; as, to rate a ship; to rate a seaman; to rate a pension.
(v. t.) To ratify.
(v. i.) To be set or considered in a class; to have rank; as, the ship rates as a ship of the line.
(v. i.) To make an estimate.
Example Sentences:
(1) Child benefit has already been withdrawn from higher rate taxpayers.
(2) There was appreciable variation in toothbrush wear among subjects, some reducing their brush to a poor state in 2 weeks whereas with others the brush was rated as "good" after 10 weeks.
(3) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
(4) Propranolol resulted in a significantly lower mean hourly, mean 24 h and minimum heart rate.
(5) The proportion of motile spermatozoa decreased with time at the same rate when samples were prepared in either HEPES or phosphate buffers.
(6) A study of factors influencing genetic counseling attendance rate has been conducted in the Bouches-du-Rhône area, in the south of France.
(7) In this article we report the survival and morbidity rates for all live-born infants weighing 501 to 1000 gram at birth and born to residents of a defined geographic region from 1977 to 1980 (n = 255) compared with 1981 to 1984 (n = 266).
(8) Life expectancy and the infant mortality rate are considered more useful from an operational perspective and for comparisons than is the crude death rate because they are not influenced by age structure.
(9) Heart rate (HR), pulmonary ventilation (V), oxygen consumption (VO2), carbon dioxide production (VCO2), and respiratory quotient (RQ) were measured.
(10) By combined histologic and cytologic examinations, the overall diagnostic rate was raised to 87.7%.
(11) In contrast to previous reports, these tumours were more malignant than osteosarcomas and showed a five-year survival rate of only 4-2 per cent.
(12) A progressively more precise approach to identifying affected individuals involves measuring body weight and height, then energy intake (or expenditure) and finally the basal metabolic rate (BMR).
(13) 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.
(14) Increased infusion flow rate did not increase the limiting frequency.
(15) The main finding of this study is that diabetic adolescents with a high erythrocyte Na,Li countertransport rate have an arterial pressure significantly higher than patients with normal Na,Li countertransport fluxes.
(16) This clinical improvement was also associated with a decrease of erythrocyte sedimentation rate (p less than 0.001), decrease of C-reactive protein (p less than 0.0001) and with improvement of anaemia (p less than 0.05).
(17) This difference is probably secondary to the different rates of delivery of furosemide into urine.
(18) Under blood preservation conditions the difference of the rates of ATP-production and -consumption is the most important factor for a high ATP-level over long periods.
(19) There is no evidence that health-maintenance organizations reduce admissions in discretionary or "unnecessary" categories; instead, the data suggest lower admission rates across the board.
(20) Male sex, age under 19 or over 45, few social supports, and a history of previous suicide attempts are all factors associated with increased suicide rates.