(n.) Any substance or medium that transmits the electric force by a process different from conduction, as in the phenomena of induction; a nonconductor. separating a body electrified by induction, from the electrifying body.
Example Sentences:
(1) The RNA solutions showed a dielectric increment proportional to the strength of the applied field and to the RNA concentration.
(2) To investigate the physical state of water in hydrating biological macro-molecules, the dielectric properties of water in hen egg lysozyme pellets with various moisture contents were studied using the thermally stimulated depolarisation currents technique.
(3) In this way a complete description is given of both the electrostatic and the dielectric properties of the enzyme.
(4) We find good agreement between the model calculations and the experimental results indicating that edge birefringence can be attributed to the change in polarization of light that is refracted and reflected by dielectric interfaces.
(5) The present study, along with that of the Ser82 variant protein (Louie et al., 1988b), clearly establishes the link between dielectric constant within the heme crevice and reduction potential.
(6) It has been established that the structure of the hormone includes a set of regular helical forms which varies considerably with the humidity and dielectric constant of the medium.
(7) In the mixed solvent system, a dramatic change in the magnitude of solubility occurred after a dielectric constant value of about 60, indicating ionic association or ion-pairs below this value.
(8) The water inside the channel was considered through a continuum medium using the dielectric constant of the bulk, and the membrane contribution was included using the virtual images of the pore in a dielectric slab of epsilon = 3.
(9) Probe lifetimes for continuous immersion in physiological saline solution, as measured by impedance, have exceeded 750 h. The failure mechanism is believed to be due to moisture and ion absorption in the top dielectric layer.
(10) No simple expression for the effective dielectric constant, Deff, can generally be valid, since Deff is a sensitive function of position.
(11) A comparison of the dielectric properties between three different stages of tumor development as well as that between various locations within the tumor is reported.
(12) The intercalation complex was investigated as a function of the molecular dielectric constant, epsilon, and the length of the (G-C) duplex segment.
(13) The simulations are performed in a dielectric continuum model, the so-called primitive model of electrolyte theory, with a fixed protein structure and a uniform dielectric permittivity.
(14) The calculations were performed for the protonated form with a dielectric constant of 80 and the unprotonated form with dielectric constants of 1.5 and 80.
(15) The effects of buffer, pH, dielectric constant and phosphate have been investigated.
(16) Absolute rate constants, and equilibrium constants, of electron transfer reactions may vary greatly according to the dielectric properties of the reaction environment.
(17) An appropriately constructed transmission probe can sense the dielectric behaviour of tissue into deeper organ regions than a reflection probe of corresponding size.
(18) We summarize Wiener's theory of the dielectric constant of heterogeneous systems and extend its application to suspensions of particles with corrugated surfaces and interstitial solvent.
(19) A detailed evaluation of the electrostatic potential barrier shows, indeed, that the ions have practically no chance to penetrate into the phospholipid bilayer, but that they can cross the membrane through local protein inclusions, of high dielectric constant.
(20) Dielectrophoresis and electrorotation are commonly used to measure dielectric properties and membrane electrical parameters of biological cells.
Nonconducting
Definition:
(a.) Not conducting; not transmitting a fluid or force; thus, in electricity, wax is a nonconducting substance.
Example Sentences:
(1) We determined that the loss of somatosensory evoked potential amplitude may be attributed to the SOL if 30-100% of the spinal cord fibers that they displaced were rendered nonconducting.
(2) The microwave data are analysed using the Maxwell mixture theory applicable for a suspension of nonconducting, low permittivity spheres in bulk water.
(3) Protons can cross the membrane either as CHBr (nonconductive) or as CH+ (conductive), whereas Br- crosses the membrane primarily as CHBr (nonconductive).
(4) Reduction of the luminal [Cl-] from 120 to 3 mM failed to reveal any apical Cl- permeability (conductive or nonconductive) in CF cultures.
(5) The model is based on the notion that the transition between a conductive and a nonconductive state of the channel represents a local process in the protein, such as the movement of a small segment of a peptide chain or the rotation of a single amino-acid residue.
(6) The effects of conductive versus nonconductive samplers and sampling flow rate were measured as a function of particle and sampler charge levels.
(7) The slow voltage-dependent correlation time in the range of seconds is assigned to the formation of nonconducting pore precursors.
(8) The sensitivity of the measurements was increased if a nonconducting solution (isotonic sucrose) was used to isolate electrically the control from the experimental sites.
(9) The saline-filled and conductive catheter was safer in that fibrillation never occurred, while fibrillation nearly always occurred with the nonconductive catheter.
(10) Patients undergoing cardiac catheterization are particularly at risk from electrical hazards, primarily because catheters are made from nonconductive materials.
(11) A method for recording O2 concentrations in nonconducting organic media with the Clark oxygen electrode was developed.
(12) In a membrane containing many of these channels, the ratio of the number of conducting to nonconducting channels changes e-fold per 3.7 mV.
(13) The use of nonconducting materials on the mucosal side allowed us to demonstrate that apparently all epithelial cells are electrically coupled, with a mean space constant of 460 microm, and a voltage spread consistent with a thin sheet model.
(14) The relative contrast produced by nonconducting spheres in a uniform saline background was measured on the reconstructed images and used to determine system sensitivity to target volume and to the radial and vertical positions of single spheres.
(15) Following voltage-dependent activation, Drosophila Shaker K+ channels enter a nonconducting, inactivated state.
(16) The hypothesis that PT could interact with open or slow inactivated states to produce a drug-bound, long duration, nonconducting state was also tested.
(17) To examine the dynamic interrelations between conducted and nonconducted beats at different atrial rates, a unique atrial pacing protocol of functional 2:1 AV block was used in 10 patients.
(18) Class 1b drugs became rapidly attached to sodium channels after depolarization, which rendered them nonconducting, but the drugs also dissociated rapidly after repolarization so that by the end of a normal diastole nearly all channels were back to their conducting state.
(19) A nonconductive chamber was built with 1-cm-diameter electrodes placed 1 cm apart.
(20) Concealed (C) His bundle ectopic systoles (H') have been shown in man to give rise to first and second degree atrioventricular (A-V) block and to simulate nonconducted atrial premature beats (P').