(n.) The act or operation of subtracting or taking away a part.
(n.) The taking of a lesser number or quantity from a greater of the same kind or denomination; an operation for finding the difference between two numbers or quantities.
(n.) The withdrawing or withholding from a person of some right to which he is entitled by law.
Example Sentences:
(1) Thus, 10 degrees should be subtracted from the ultrasound values in order to obtain the real AV angles.
(2) The signals were processed digitally using three different algorithms: 1) simple linear regression (LR); 2) linear regression with drift correction achieved by adding to, or subtracting from the plethysmographic signal a term proportional to time (LRC); 3) Fourier analysis (FFT).
(3) During bilateral displacements, the activity induced by the respective contralateral leg is linearly summed or subtracted, depending on whether the legs are displaced in the same or in opposite directions.
(4) All MR images were compared with findings of chest X-ray, CT and IVDSA (intravenous digital subtraction angiography) as appropriate.
(5) Binaural difference waves (BDWs), obtained by subtracting the sum of two monaural BAEPs from a binaural BAEP, were obtained in 16- to 20-day-old jaundiced Gunn rats before and after injection of sulfadimethoxine, which produces bilirubin neurotoxicity by promoting net transfer of bilirubin out of the circulation into brain tissue.
(6) Aggressive responding was maintained by contingent presentation of periods free of point subtractions, i.e., provocations.
(7) The diagnosis of this rare anomaly was facilitated by the use of digital subtraction aortography and allowed selective angiography of the artery with an appropriately shaped catheter.
(8) Intraarterial digital subtraction angiography (DSA) was performed to evaluate graft patency in 45 patients undergoing coronary artery bypass grafting with the use of internal mammary artery (IMA).
(9) We studied how much blue, green, or red light had to be added to or subtracted from white to obtain veridical hue perception (blue, green, red, or their complementary colours) at various locations in the temporal visual field.
(10) For each patient, the BSM and the QRS integral map before, during, and after the inflation was compared by subtraction of recordings "during-minus-before" inflation and "before-minus-after" inflation.
(11) Aneurysm of the hepatic artery, causing obstruction of the common bile duct, was definitely diagnosed preoperatively by subtraction angiography, combined with percutaneous transhepatic cholangiography.
(12) One problem required addition; the other subtraction.
(13) Eight complementary DNA (cDNA) clones highly expressed in fetal rat stomach but not in normal adult rat stomach were isolated after screening 2 x 10(4) independent recombinants from a subtracted cDNA library.
(14) In nine cases, MR angiographic findings were verified with digital subtraction angiography or conventional angiography.
(15) The various definitions of "efficiency" and "economy" are considered at the whole body and the isolated muscle level, and a discussion of baseline subtraction is presented.
(16) The voltage-dependent Na+, K+ and Ca2+ currents (INa, IK and ICa) were separated by the use of ion subtraction and pharmacological treatments.
(17) They could be improved by subtraction of the vascular images obtained after injection of 99m-technetium serum albumin.
(18) Single digital subtraction angiography showed bilateral occlusion, predominantly on the left side of the supraclinoid portion of the interna carotid arteries with formation of collateral circulation in the diencephalic territory.
(19) In this pilot study, a blood pool subtraction technique, which makes it possible to visualize MI 6 h postinjection, is validated.
(20) To determine the optimal time for recording left ventricular angiograms during atrial pacing stress tests, digital subtraction left ventriculograms were obtained using 12 ml of contrast material in 40 patients at rest and at peak pacing.
Summation
Definition:
(v. t.) The act of summing, or forming a sum, or total amount; also, an aggregate.
Example Sentences:
(1) Alphaxalone and endogenous steroid hormone metabolites inhibit the binding of [35S]-t-butyl bicyclophosphorothionate in some regions, enhance it in others and give biphasic concentration-dependence in others, apparently the result of algebraic summation of two effects involving regional-dependent enhancement or inhibition.
(2) This suggests that the curvature of the xenon clearance curve is the result of recording the summation of the activities from the alveoli and the pulmonary blood and not, as previously described, due to the existence of two different sub-populations of alveoli.
(3) Left ventricular cavity and muscle areas of each image were planimetered with a light-pen system and summated for volume: total volume = sigma (areas x 3 mm).
(4) The computer system was a hybrid of analog devices (tape-recorder, voltage summator, and high-pass filters) and a multipurpose laboratory digital device (PDP-12).
(5) Spatial summation was found to decrease by 30-50% as the cell was light-adapted to a threshold some 4 log units above the dark-adapted one.
(6) The findings strongly suggest the existence of spatial summation of the effects from GM and TA muscle at the level of a single interneuronal pool.
(7) The parameters mainly related to temporal summation are not different between various electrode configurations.
(8) Therefore, anopic observers usually need a very large amount of spatial summation to arrive at a well defined match of the projection anomaloscope.
(9) This model corresponds to quadratic summation of the stimulus followed by a random threshold device.
(10) Consequently, the slow repolarization transients of succeeding receptor potentials displayed temporal summation.
(11) Thus the relation of neuron geometry to aspects of spatiotemporal summation of synaptic inputs can be investigated readily.
(12) The summation of findings suggests that endogenous substance P plays a complementary role in the regulation of parasympathetic nerve-induced fluid secretion in the acinus but is minimally involved in degranulation from granular duct cells.
(13) These estimates can be summated to provide total ventricular and total brain volumes.
(14) This effect of parathyroid hormone, which appears to involve more than simple physiologic summation, may have important clinical implications.
(15) At frequencies above 15 Hz the SETi-evoked contraction dominates tension development, though IR summates with it during the rising phase.
(16) At reoperation because of dehiscence and hematoma interval between two operation is very short so we have got present not only hypovolemia but also summation effect of used anesthetic and plasma expander.
(17) The stimulant effects of amantadine and d-amphetamine summated but did not interact, response rates after d-amphetamine being augmented by pretreatment with amantadine except at intervals at which amantadine was by itself depressant.
(18) The laminar pattern of current sources and sinks coincident with this component was more complicated after bicuculline, reflecting the summation of current flows associated with disinhibited lamina 4 activity.
(19) The cochlear summating potential (SP) preceding the auditory nerve compound action potential (AP) was elicited by broadband alternating condensation and rarefaction clicks and recorded by noninvasive electrodes from the external auditory meatus (EAM) of 60 volunteers of both sexes, 12 to 67 years old, who had normal hearing for age.
(20) It is wiser, in the light of results reporting individual differences in the existence and extent of the paradox, and its sensitivity to stimulus conditions, to side with Blake and Fox (1973) when they observed that it is not unreasonable to suppose that various stimulus conditions might yield varying amounts of summation or even inhibition.