(a.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an expression for the area of a figure bounded wholly or in part by a curved line, as by a curve, two ordinates, and the axis of abscissas.
(a.) A quadrate; a square.
(a.) The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.
(a.) The position of one heavenly body in respect to another when distant from it 90¡, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition.
Example Sentences:
(1) 220 MHz proton Fourier transform (FT) NMR with quadrature phase detection (QPD) technique is applied to observe largely hyperfine-shifted signals of various hemoproteins and hemoenzymes in ferric high-spin state.
(2) The recorded Doppler quadrature signals were processed by spectral analysis.
(3) A special circuit utilizing two electrodes and three leads permits reduction of the unwanted quadrature signal to zero.
(4) In many conditions, dmax exceeded half a cycle of f1, a result that appears to contradict predictions from quadrature models of motion detection.
(5) The class of Newton-Côtes numerical quadrature procedures is examined from the perspective of minimizing mean squared error (MSE).
(6) Interactions of long-wave L cone and S cone signals in direction-selective mechanisms were measured with an orange counterphase grating and a violet counterphase test, both flickering at the same rate and presented in spatial quadrature phase on the yellowish adapting field.
(7) A pulsed Doppler cardiotocograph module was extended to obtain low frequency Doppler signals, by the addition of a 90 degree phase shifter, analog multipliers, quadrature detector, sample and hold circuits and low pass filters, to produce five simultaneous outputs representing movement at depths separated by 1.5cm intervals.
(8) A frequency band decomposition of an ECG waveform is carried out by means of quadrature mirror filters (QMF), which split the ECG spectrum into six bands of unequal width.
(9) The apparatus consists of an array of focused acoustic transducers, a fluid jet to position the particles, and electronics incorporating quadrature detection.
(10) It has been recently demonstrated that some primary otolith afferents and most otolith-related vestibular nuclei neurons encode two spatial dimensions that can be described by two vectors in temporal and spatial quadrature.
(11) We propose a model which incorporates these new results and provides a parsimonious explanation for the construction of both quadrature phase and anti-phase pairs.
(12) Predictions of the quadrature model are derived for both two-frame and multiframe displays.
(13) Oscillatory motion can be decomposed into the sum of a modulating counterphase grating and a static masking grating, both of which are in spatial quadrature (i.e., 90 degrees out of phase).
(14) are in temporal quadrature) at low temporal frequencies, but their phase difference increases to a half-cycle by about 4 Hz.
(15) To determine the existence of tissue heating-associated risks to the eye with magnetic resonance (MR) imaging performed at high specific absorption rates (SARs), corneal temperature was measured in 14 patients immediately before and after MR imaging performed with a 1.5-T, 64-MHz unit and a quadrature-driven body coil for radio-frequency transmission and a receive-only local coil designed for eye imaging.
(16) A simulation for Doppler ultrasound quadrature signals from pulsatile, nonuniform flow is presented.
(17) The hexagonal orthogonal-oriented quadrature pyramid (HOP) transform, which operates on a hexagonal input lattice, employs basis functions that are orthogonal, self-similar, and localized in space, spatial frequency, orientation, and phase.
(18) The demonstration of compelling dichoptic illusions of motion using a variety of stimuli, all of which share the property that left and right eye patterns were spatio-temporal quadrature pairs, has been interpreted as evidence for binocular integration in the early motion system (short range motion).
(19) Blood flow velocity was measured in the dog aorta distal to mechanically induced constrictions of various degrees of severity employing an 8-MHz pulsed Doppler ultrasound velocimeter and a phase-lock loop frequency tracking method for extracting velocity from the Doppler quadrature signals.
(20) Results show that the simulation model generates realistic quadrature signals.
Quantities
Definition:
(pl. ) of Quantity
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.