(n.) An instrument or apparatus for measuring the intensity of an electric current, usually by the deflection of a magnetic needle.
Example Sentences:
(1) Three types of Berger's early investigations are described: (1) String-galvanometer recordings obtained between 1924 and 1926, mainly from trephined patients with cerebral diseases, which usually showed brain waves slowed to 6--8 per second; (2) Direct recordings from the cortex and white matter proving the cortical origin of the EEG in 1930; (3) Typical unpublished EEG recordings of epileptics and of petit-mal attacks obtained in 1930 and 1931.
(2) "Effective streaming currents" were determined by running the output through a low impedence galvanometer while simultaneously measuring the resistance of the circuit V(8) were, therefore, calculated from two measurements and compared.
(3) Films are presented for tracking on a translucent screen after reflection from a galvanometer driven mirror.
(4) Despite the universal use of the electrocardiogram for cardiac evaluation, surprisingly few physicians are aware of the individual, Willem Einthoven, who in 1901 reported and in 1924 received the Nobel Prize for the development of the string galvanometer electrocardiograph.
(5) He constructed the string galvanometer and thus he created an essential technical basis for the development of clinically applicable electrocardiographs.
(6) The results of heat measurements, using a sensitive thermopile-galvanometer system, are compatible with the hypotheses that this effect on relaxation could result from either an interference with calcium reuptake by the sarcoplasmic reticulum or an increased affinity of the troponintropomyosin complex for available calcium.
(7) When Einthoven developed the elegant, reliable and sensitive string galvanometer, he could record the electric forces of the heart from the hands and feet of the subject without even undressing him.
(8) The hook was soldered to the pivot of a galvanometer that was controlled by a waveform generator.
(9) Volta's doctrine prevailed over Galvani's school after Volta's breakthrough with his pile, or battery, until Galvani's ideas were rehabilitated by Nobili, who in 1828 measured the 'frog current' with his galvanometer.
(10) The scanning apparatus of our system, paired galvanometer mirrors, can perform narrow band scanning of an area of interest at a high temporal resolution of less than 70 msec per image.
(11) This report deals with a simplified and improved method for measuring the force-velocity relationship of the cat papillary muscle by means of a coil-type galvanometer and a horizontally oriented lever system.
(12) When Einthoven's great galvanometer became available, only the three standard limb leads were used.
(13) We have developed a new confocal laser scanning microscope equipped with two galvanometer mirrors which swing the laser beam.
(14) Electrocardiography only became clinically relevant in 1901 when Willem Einthoven devised his string galvanometer for this purpose.
(15) The present invention is based on the use of two ballistic galvanometers in connection with an ECG-Bcg set, making it unnecessary to change poles mechanically each time in order to take in surface values above and below the zero line.
(16) Two designs use servo-controlled DC motors configured as velocity servos and a third design uses a galvanometer motor configured as a position servo.
(17) The interest towards intraventricular conduction defects started some 10 yr after the introduction of the string galvanometer by Einthoven.
(18) The galvanometer-mirror assembly is mounted on an arm which can be rotated through 90 degrees.
(19) The indicated values of the ballistic galvanometer can, on the one hand, be read directLy or, on the other hand, be documented mechanically by means of a film camera or by a photographic camera with or without different adjustable time delays or by electronic coupling after applying the measurement(s).
(20) Raster scan of the beam is provided by two orthogonal mirror galvanometers.
Presence
Definition:
(n.) The state of being present, or of being within sight or call, or at hand; -- opposed to absence.
(n.) The place in which one is present; the part of space within one's ken, call, influence, etc.; neighborhood without the intervention of anything that forbids intercourse.
(n.) Specifically, neighborhood to the person of one of superior of exalted rank; also, presence chamber.
(n.) The whole of the personal qualities of an individual; person; personality; especially, the person of a superior, as a sovereign.
(n.) An assembly, especially of person of rank or nobility; noble company.
(n.) Port, mien; air; personal appearence.
Example Sentences:
(1) This particular variant of rheumatoid arthritis (RA) is characterized by the presence of subcutaneous rheumatoid nodules, scanty or absent systemic manifestations and a clinically benign course.
(2) It was found that the skeletal muscle enzyme of the chick embryo is independent of the presence of creatine and consequently is another constitutive enzyme like the creatine kinase of the early embryonic chick heart.
(3) These data suggest that the hybrid is formed by the same mechanism in the absence and presence of the urea step.
(4) These studies led to the following conclusions: (a) all the prominent NHP which remain bound to DNA are also present in somewhat similar proportions in the saline-EDTA, Tris, and 0.35 M NaCl washes of nuclei; (b) a protein comigrating with actin is prominent in the first saline-EDTA wash of nuclei, but present as only a minor band in the subsequent washes and on washed chromatin; (c) the presence of nuclear matrix proteins in all the nuclear washes and cytosol indicates that these proteins are distributed throughout the cell; (d) a histone-binding protein (J2) analogous to the HMG1 protein of K. V. Shooter, G.H.
(5) A new and simple method of serotyping campylobacters has been developed which utilises co-agglutination to detect the presence of heat-stable antigens.
(6) These results suggest the presence of a new antigen-antibody system for another human type C retrovirus related antigens(s) and a participation of retrovirus in autoimmune diseases.
(7) This death is also dependent on the presence of chloride and is prevented with the non-selective EAA antagonist, kynurenic acid, but is not prevented by QA.
(8) The oral nerve endings of the palate, the buccal mucosa and the periodontal ligament of the cat canine were characterized by the presence of a cellular envelope which is the final form of the Henle sheath.
(9) 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.
(10) During and after the infusion of 5HTP, none of the patients showed an increase in anxiety or depressive symptoms, despite the presence of severe side effects.
(11) The presence of O-glycosidic linkages between carbohydrate and protein in the DF3 antigenic site was further supported by the presence of NaBH4-sensitive sites.
(12) Cyclic AMP stimulated phosphorylation by [gamma-32P]ATP of two proteins of apparent Mr = 20,000 and 7,000 that were concentrated in sarcoplasmic reticulum, but the stimulation was markedly dependent on the presence of added soluble cyclic AMP-dependent protein kinase.
(13) The penetration of (22)Na was not prevented by the presence of metabolic inhibitors or by 500 mm NaCl in the suspending medium.
(14) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(15) Marked enhancement of IFN-gamma production by T cells was seen in the presence of as little as 0.3% thymic DC.
(16) In the presence of insulin, a qualitatively similar pattern of increasing responses to albumin is observed; the enhancement of each response by insulin is, however, only slightly potentiated by higher albumin concentrations.
(17) Here we show that this induction of AP-2 mRNA is at the level of transcription and is transient, reaching a peak 48-72 hr after the addition of RA and declining thereafter, even in the continuous presence of RA.
(18) The highest rate of discontinuation occurred when method choice was denied in the presence of husband-wife agreement on method choice, and the lowest rate occurred when method choice was granted in the presence of such concurrence.
(19) The presence of lactalbumin was closely associated with the presence of E.R.
(20) It was concluded that the significant factors affecting outcome are tumor cell type and presence or absence or mitoses.