(n.) A motion like that of waves; a moving in this and that direction; as, the fluctuations of the sea.
(n.) A wavering; unsteadiness; as, fluctuations of opinion; fluctuations of prices.
(n.) The motion or undulation of a fluid collected in a natural or artifical cavity, which is felt when it is subjected to pressure or percussion.
Example Sentences:
(1) 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.
(2) The influence of the various concepts for the induction of lateral structure formation in lipid membranes on integral functional units like ionophores is demonstrated by analysing the single channel current fluctuations of gramicidin in bimolecular lipid membranes.
(3) During control, no significant difference between systolic fluctuation (delta Pa) and pleural swings (delta Ppl) was found.
(4) The fluctuations in [Ca2+]i measured with fura-2 were synchronized among the population of cells observed and were sensitive to extracellular Ca2+ concentration ([Ca2+]o).
(5) Large emission intensity fluctuations are observed from analyte species in inductively coupled plasmas.
(6) The titres of phase I antibodies fluctuated from 0 to 16 depending on the antigen applied.
(7) Macroscopic fluctuations of liver alcohol dehydrogenase enzymic activity in complex reaction consisting in ethanol oxidation and butyraldehyde reduction were studied.
(8) The curve of glucose fluctuations was smoother after 50 micrograms than after 100 micrograms and control.
(9) During a single reversal trial of two 2-wk experimental periods, teats of all glands of 12 Holstein cows were subjected to a milking routine conducive to large vacuum fluctuations and flooded teat cups.
(10) For the case of the fluctuating pressure, the strength of the artery becomes considerably lower than those under constant amplitude and two-step-multi-duplicated pulsatile pressure.
(11) The fluctuations in heart rate (HR) and blood pressure (BP) over 24-h were measured at 30-min and 1-h intervals, respectively.
(12) The large degree of inter-dose fluctuation between doses indicates that it is preferable to use pre-dose plasma sodium valproate levels to guide the clinical management of epileptic patients.
(13) Painful manifestations (arthralgia, myalgia), variable with fluctuations in the IS affection were observed in both groups (S1, S2).
(14) These apparent conflicting results between IK and the tail current could not be explained by extracellular K+ fluctuation, because 20 mM Cs+ alone depressed both factors, but an additional application of Ba2+ caused an increase in both components compared with those in the former condition.
(15) This model characterized the abnormal flow by a weak fluctuation of wall shear stress at the site adjacent to the vessel wall.
(16) The results of the present experiments show that capillary blood flow in the cerebral cortex fluctuates, whether the cat's head is supplied by the animal's intact circulation or by an artificial circulation system.
(17) Seasonal fluctuations in IOP were observed (P = 0.0007), with higher IOP occurring in the winter.
(18) Among all subgroups, the odds ratios adjusted for pertinent confounders and interactions fluctuated randomly by about 0.9 and showed no consistent trend with increased alcohol consumption.
(19) During 70 days or so from the time of recruitment until just before the beginning of the cycle during which a follicle is destined to ovulate, folliculogenesis is a continuous process dependent on gonadotrophins but independent of the fluctuations in their concentrations occurring during this time.
(20) The proportion of sampling runs characterized by normal fluctuating levels increased from 38% in the first 2 years of use to 80% during the 5th year of use.
Vibration
Definition:
(n.) The act of vibrating, or the state of being vibrated, or in vibratory motion; quick motion to and fro; oscillation, as of a pendulum or musical string.
(n.) A limited reciprocating motion of a particle of an elastic body or medium in alternately opposite directions from its position of equilibrium, when that equilibrium has been disturbed, as when a stretched cord or other body produces musical notes, or particles of air transmit sounds to the ear. The path of the particle may be in a straight line, in a circular arc, or in any curve whatever.
Example Sentences:
(1) The Cavitron Ultrasonic Surgical Aspirator (CUSA) is a dissecting system that removes tissue by vibration, irrigation and suction; fluid and particulate matter from tumors are aspirated and subsquently deposited in a canister.
(2) In order to control noise- and vibration-caused diseases it was necessary not only to improve machines' quality and service conditions but also to pay special attention to the choice of operators and to the quality of monitoring their adaptation process.
(3) The intensity changes seen for alpha-fucose were found to follow a reversible first-order rate-equation and the rate constants obtained from different vibrational bands were found to be consistent among themselves and in reasonable agreement with those obtained by other techniques.
(4) Amplitude of the musical vibrations decreased by inhalation of amyl nitrite, but increased by infusion of methoxamine.
(5) The response of isolated muscle tissue of white rats to low-frequency vibration has been studied.
(6) The "random coil" conformational problem is examined by comparison of vibrational CD (VCD) spectra of various polypeptide model systems with that of proline oligomers [(Pro)n] and poly(L-proline).
(7) Headache and vertigo were not linked with exposure to vibration in forestry and a significant part of the numbness reported may be due to the carpal tunnel syndrome.
(8) Additionally, by ultrasonic vibration of tissues that had been subjected to prolonged osmium fixation, the epithelium was removed and such microdissected membranes similarly were examined.
(9) The ability of a mathematical model to evaluate the effects of two different pain modulating procedures (partial nerve block and vibration) on acute experimental pulpal pain was studied.
(10) The only likely cause for the pathological vascular findings in our patient was an exposure to vibration due to excessive off-street motorcycle driving.
(11) Time-resolved infrared spectroscopy with 0.5-ps resolution is used to track the evolution of the CO stretching vibration after visible photoexcitation of carboxyhemoglobin in water at room temperature.
(12) Biodynamic stressors such as acceleration, vibration, heat, and cold can affect pilot performance.
(13) There have been shown many changes, which took place in the various anatomic-physiological formations of the brain, and evaluated their significance in organism's responses to the effects of ionizing and nonionizing radiation, hyperoxia, hypoxia, accelerations, vibrations and combined effects of some of those factors.
(14) Tetrapolar rheovasography was used to medically examine 54 riveters, of equal age and duration of work, who were exposed to the complex action of low-intensity vibration and noise.
(15) A vibration-rotation-tunneling band of the perdeuterated cluster has been measured near 89.6 wave numbers by tunable far infrared laser absorption spectroscopy.
(16) Vibratory sensitivity was strongly related to height when measurements were made with either the vibration sensitivity tester (P = .02) or the biothesiometer (P less than .01); however, there was no relation between thermal sensitivity (as measured with the thermal sensitivity tester) and height.
(17) Our experiments with monkeys gave typical resonance curves for the transmission of vibration of the bulbi with maxima between 25 and 31.5 Hz.
(18) Altering the frequency of vibration did not alter the distribution of tremor frequencies.
(19) Superficial cutaneous stimulation of the dorsal side of the forearm during tendon vibration noticeably decreased the P1 peaks in both types of motor units.
(20) A survey is given of the literature on the sensitivity of the vestibular system to audio-frequency sound and vibration in animals.