(v. t.) To form, as sound, to a certain key, or to a certain portion.
(v. t.) To vary or inflect in a natural, customary, or musical manner; as, the organs of speech modulate the voice in reading or speaking.
(v. i.) To pass from one key into another.
Example Sentences:
(1) The variation in thickness of the LLFL may modulate the species causing damage to the cells below it.
(2) These included bringing in the A* grade, reducing the number of modules from six to four, and a greater attempt to assess the whole course at the end.
(3) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
(4) Quantitative determinations indicate that the amount of PBG-D mRNA is modulated both by the erythroid nature of the tissue and by cell proliferation, probably at the transcriptional level.
(5) Gel filtration of the 40,000 rpm supernatant fraction of a homogenate of rat cerebral cortex on a Sepharose 6B column yielded two fractions: fraction II with the "Ca(2+) plus Mg(2+)-dependent" phosphodiesterase activity and fraction III containing its modulator.
(6) This modulation results from repetitive, alternating bursts of excitatory and inhibitory postsynaptic potentials, which are caused at least in part by synaptic feedback to the command neurons from identified classes of neurons in the feeding network.
(7) Modulation of the voltage-gated K+ conductance in T-lymphocytes by substance P was examined.
(8) Thus, human bronchial epithelial cells can express the IL-8 gene, with expression in response to the inflammatory mediator TNF regulated mainly at the transcriptional level, and with elements within the 5'-flanking region of the gene that are directly or indirectly modulated by the TNF signal.
(9) This study examines the role of sex hormones in modulating the expression of autoimmunity in NZB x NZW F1 mice.
(10) More needs to be known about the direct and indirect modulation of cytokine production by cyclosporin A in connective tissues, in order to understand its potential value in clinical disorders.
(11) We suggest that neuronal PACAP may serve to modulate motor activity and secretion in the lower esophageal sphincter region.
(12) Furthermore, modulation of the assay by prostaglandin E2 (PGE2) was used to increase its sensitivity.
(13) Masking experiments are demonstrated for electrical frequency-modulated tone bursts from 1,000 to 10,000 cps and from 10,000 to 1,000 cps with superimposed clicks.
(14) From these results, BM-Eo are naive and seem to be a good indicator for eosinophilotaxis and its modulation.
(15) Administration of modulators in combinations of threes resulted in still further reduction of tumor incidences to 22.2% (SS + MC + AA), 19.2% (SS + MC + RA), 16% (MC + AA + RA) and 23.1% (AA + RA + SS).
(16) These findings suggest that activation of protein kinase C may act as a feedback inhibitor to modulate ligand-mediated increases in [Ca2+]i.
(17) These studies demonstrate that vWF interaction with GP Ib may be modulated by botrocetin binding to a discontinuous site located within residues 539-643.
(18) This contrasts sharply with the reduction in both the frequency and surface area of sensory neuron active zones that accompanies long-term habituation, and suggests that modulation of active zone number and size may be an anatomical correlate that lies in the long-term domain.
(19) Thus, it appears that the modulation of the phosphorylation of these cytosolic proteins represents an essential step in the regulation of T lymphocyte activation.
(20) Energy conformational calculations on these compounds were also carried out using the empirical energy program called MOLMEC, in order to better understand how the 4-R substituents modulate receptor binding affinities and efficacies.
Modulus
Definition:
(n.) A quantity or coefficient, or constant, which expresses the measure of some specified force, property, or quality, as of elasticity, strength, efficiency, etc.; a parameter.
Example Sentences:
(1) Since the three drugs had comparable mechanical and geometrical effects, the study provided evidence that, in men with essential hypertension, the smooth muscle tone of the brachial artery was significantly more sensitive to calcium inhibition than to autonomic blockade, causing a more important decrease in elastic modulus.
(2) The modulus and Poisson's ratios for each material were selected from accepted values.
(3) A series of "phase-sensitive" and "modulus" reconstructed brain images, obtained with conventional and optimized new IR pulse sequences, are shown to demonstrate these effects.
(4) The mechanical properties of compressed beam specimens of microcrystalline cellulose (Avicel pH 101) have been assessed in terms of the tensile strength (sigma t), Young's modulus (E) and the following fracture mechanics parameters: the critical stress intensity factor (KIC), the critical strain energy release rate (GIC) and the fracture toughness (R).
(5) Shear stress and first normal stress difference are measured as a function of shear gradient to calculate the apparent shear viscosity eta 1 and the apparent normal viscosity psi 7 as well as an apparent shear modulus G'.
(6) As in our previous studies, the modulus of elasticity in bending was significantly less than the value obtained in tension for only the smaller cross-sectional wires.
(7) The modulus of elasticity was derived by combining the velocity of ultrasound measurements and photon absorption (Norland-Cameron method) in human cortical bone (proximal radius) in vivo.
(8) At concentrations less than this value, the mucus had little or no elasticity and low rates of transport; at concentrations greater than the optimum, however, further increases in elastic modulus also resulted in decreasing transport.
(9) The tetrapeptide Gly-His-Arg-Pro at comparable concentrations decreased the modulus and increased the creep to a lesser degree; when combined with Gly-Pro-Arg-Pro it enhanced the effectiveness of the latter.
(10) The value of the torsional modulus obtained from this analysis, C = 3.4 X 10(-19) erg cm, is from 10 to 40% larger than that estimated by others and more than twice as large as the values obtained from fluorescence depolarization or other time-resolved spectroscopic measurements.
(11) The dynamic shear moduli of human dentin and enamel were measured using a torsion pendulum over a temperature range from 23 to 150 degrees C. For dentin, the shear modulus slightly increased for temperatures near 50 to 100 degrees C, which was caused by a loss of free water.
(12) Results establish a revised expression for Young's modulus and show that either the stiffness tester or the torque meter will yield essentially the same measured values of bending properties.
(13) From the injection level to the other levels, the proximity effect rapidly vanishes while the modulus effect does not disappear until grounded level is reached.
(14) The elastic modulus is determined as a function of water content for untreated stratum corneum, and stratum corneum treated with urea and LiBr.
(15) The volume elasticity of the chamber is dependent not only upon the myocardium elastic modulus and the wall thickness ratio, but also on the shape of the chamber.
(16) The dynamic Young's modulus in the direction of major trabecular alignment, E1, increases linearly from 4.9 to 10.4 GPa as bone volume fraction increases from 0 to 0.4; dynamic E2 and E3 values increase from 4.9 to 7 GPa as bone volume fractions increase from 0 to 0.4, with E2 being slightly higher than E3.
(17) Insulin interaction with BLM with incorporated fragments of rat liver plasma membranes, containing hormone receptors, was studied by determining Young modulus of elasticity of bilayer lipid membranes in direction perpendicular to the surface, E. The presence of membrane proteins in a concentration of 60 micrograms.ml-1 induced a significant decrease in parameter E (to approx.
(18) While the modulus values for relatively large specimens (h greater than 500 microns) remained fairly constant (approximately 15 GPa), the values decreased as the specimens became smaller.
(19) Ultimate tensile strength, yield strength, modulus of elasticity, and Brinell hardness values for the alloys were comparable.
(20) The elastic modulus of the vesicle membrane was obtained by an osmotic swelling method.