(1) Media made hyperosmotic with sucrose increase the frequency of spontaneously released quanta of transmitter, or miniature excitatory postsynaptic potentials (MEPSPs).
(2) Using a model based on airborne transmission, it is estimated that the index patient was producing 144 units of infection (quanta) per minute while in the office.
(3) In contrast to the photosensitivity of ribosome-bound 16S rRNA toward chain breakage, free 16S rRNA seems to be resistant toward photoinduced chain breakage at doses of incident 253.7-nm radiation up to at least 10(21) quanta.
(4) Under normal conditions the amount of maximal facilitation was different for separate EEG quanta and varied from 1.4 to 2.4.
(5) The threshold for light detection is estimated to be the same for both species when specified in quanta incident on the retina.4.
(6) Nifedipine was also found to activate protein kinase C, which in turn induces an increase in the nifedipine-resistant presynaptic Ca2+ influx and in the number of released ACh quanta.
(7) Incubation of rat muscle in the presence of 0.1 mM-monoethylcholine (MECh) and 40 mM-K+ for 60-90 min produced a maximal reduction in the time constant of decay of synaptic currents and potentials, indicating that acetylcholine (ACh) had been replaced by AMECh in the released quanta.
(8) These results were confirmed by analysis of inhibitory quanta in embryonic and adult Mauthner cells involving a small and large number of channels, respectively.
(9) Our measurement procedures were tested using computer-generated 'e.p.c.s' containing randomly occurring 'quanta'.
(10) The data are interpreted that for a given epithelial area there is a periodic build-up of spermatogonia which then produce several successive quanta of spermatocytes and when the spermatogonia are depleted the process repeats.
(11) The co-localization makes it likely that such changes lead to a different relative composition of the secretory quanta of chromaffin granules.
(12) The effect of 4-aminopyridine and tetraethylammonium on the time course of neurotransmitter release was examined at the neuromuscular junction using a computer-aided method which directly measured the time of occurrence of individual quanta.
(13) Let the light-quanta be absorbed in the retina according to a Poisson process.
(14) Furthermore, modulation of transmission proudced by variation in the presynaptic resting potential and during presynaptic inhibition results from changes in the mean number of quanta released by each impulse.
(15) When such thresholds and the intensities of the background lights are expressed in terms of the number of quanta absorbed per unit time, it is found that three factors can be correlated with the thresholds measured in various states of light- and dark-adaptation: (i) the intensity of a steady background, (ii) the rate of regeneration of rhodopsin, and (iii) the amount of metarhodopsin II present in the rods.3.
(16) The paper is concerned with the results of a comparative study of radiation injury of chromosomes of human lymphocytes at the G0 stage resulting from the influence of 60Co gamma quanta and high activity 252Cf radiation sources and depending on a dose and dose rate; with the potentialities of modifying a cytogenetic effect of irradiation by postradiation hyperthermia of cells.
(17) This suggests that large quanta are formed by adding additional ACh to preformed quanta shortly before they are available for release.
(18) A mechanism by which NH stretching quanta are coherently transported along a chain of hydrogen bonded peptide groups is demonstrated by classical simulation of a section of the alpha-helical peptide poly(L-alanine).
(19) Intracellular recordings from single muscle fibres showed that the duration of synaptic currents was longer than in most other vertebrates so far studied and that the number of transmitter 'quanta' released by a single nerve impulse, about 20, was lower, probably reflecting the small size of the presynaptic terminals.
(20) Statistical analysis suggests that the changes in the average numbers of quanta released (m) could be attributed to the change in the immediately available store (n).
Quantity
Definition:
(v. t.) To modify or qualify with respect to quantity; to fix or express the quantity of; to rate.
(n.) The attribute of being so much, and not more or less; the property of being measurable, or capable of increase and decrease, multiplication and division; greatness; and more concretely, that which answers the question "How much?"; measure in regard to bulk or amount; determinate or comparative dimensions; measure; amount; bulk; extent; size.
(n.) The extent or extension of a general conception, that is, the number of species or individuals to which it may be applied; also, its content or comprehension, that is, the number of its constituent qualities, attributes, or relations.
(n.) The measure of a syllable; that which determines the time in which it is pronounced; as, the long or short quantity of a vowel or syllable.
(n.) The relative duration of a tone.
(n.) That which can be increased, diminished, or measured; especially (Math.), anything to which mathematical processes are applicable.
(n.) A determinate or estimated amount; a sum or bulk; a certain portion or part; sometimes, a considerable amount; a large portion, bulk, or sum; as, a medicine taken in quantities, that is, in large quantities.
Example Sentences:
(1) By 24 hr, rough endoplasmic reticulum in thecal cells increased from 4.2 to 7% of cell volume, while the amount in granulosa cells increased from less than 3.5% to more than 10%; the quantity remained relatively constant in the theca but declined to prestimulation values in the granulosa layer.
(2) The amino acid pools in Chinese hamster lung V79 cells were measured as a function of time during hyperthermic exposure at 40.5 degrees and 45.0 degrees C. Sixteen of the 20 protein amino acids were present in sufficient quantity to measure accurately.
(3) The influence of calcium ions on the electrophoretic properties of phospholipid stabilized emulsions containing various quantities of the sodium salts of oleic acid (SO), phosphatidic acid (SPA), phosphatidylinositol (SPI), and phosphatidylserine (SPS) was examined.
(4) The quantity of social ties, the quality of relationships as modified by type of intimate, and the baseline level of symptoms measured five years earlier were significant predictors of psychosomatic symptoms among this sample of women.
(5) It is an intriguing moment: the new culture secretary, Sajid Javid, who was brought in to replace Maria Miller last month, is something of an unknown quantity.
(6) Lipoprotein electrophoresis on agarose gel has been modified to allow estimation of the absolute quantity of each fraction.
(7) Throughout the entire cultivation cytidyl derivatives occurred in trace quantities.
(8) However, in this last group, a significant negative relationship between the quantity of acetaldehyde bound to microsomal proteins and the monooxygenase-catalyzed transformation of butanol by liver microsomes was demonstrated (r = -0.79, P less than 0.01).
(9) With an increased quantity o blood per taking by blood bactericidia a decreased contamination rate is to be expected.
(10) The relative quantities of specific HLA-A and -B antigens on lymphocytes were also noted to be the same as those on platelets.
(11) Based on the economics of most countries in Africa, their Health Budgets can afford mostly the non-opioid and strong opioid drugs in more or less adequate quantities.
(12) On the other hand, the injection of minute quantities of endotoxin into PbAc(2)-sensitized rats invariably resulted in disseminated intravascular coagulation, apparently via a complete activation of the intrinsic pathway.
(13) The department of dietetics at a large teaching hospital has substantially reduced its food and labor costs through use of computerized systems that ensure efficient inventory management, recipe standardization, ingredient control, quantity and quality control, and identification of productive man-hours and appropriate staffing levels.
(14) The quantity of immunoreactive insulin found in the urine is believed to reflect the level of free insulin in the serum.
(15) At first Kupffer cells and liver fibroblasts were taken on the equal quantity.
(16) As monitored by in vivo near-infrared spectroscopy (NIR), no improvement was noted after 50% O2 whereas 50% O2-5% CO2 resulted in increased perfusion, an oxidation of cytochrome a,a3, an increase in oxyhemoglobin, and reduced quantities of de-oxyhemoglobin (p less than 0.01) despite a further increase in intracranial pressure.
(17) Measurable quantities of temefos were found in the snails within 1 day after the first treatment with a 2% granular formulation but 3 weeks elapsed before uptake occurred following treatment with a temefos emulsion.
(18) By contrast, SAP-35, the major surfactant-associated glycoprotein of molecular weight = 35,000, and other higher molecular weight proteins were not detected in significant quantities in the CLSE or surfactant-TA replacement surfactants, either by highly sensitive silver stain analysis or by immunoblot using monospecific antisera generated against bovine SAP-35.
(19) Healthbars such as Nakd fit this category and promise to deliver one of your five a day, based on the quantity of freeze-dried date paste used.
(20) The fact that it is still used is regrettable yet unavoidable at present, but the average quantity is three times less than the mercury released into the atmosphere by burning the extra coal need to power equivalent incandescent bulbs.