(n.) That branch of science which treats of statical electricity or electric force in a state of rest.
Example Sentences:
(1) The stronger negative potentials may weaken electrostatic receptor interactions and, thereby, cause the trans(E)-isomers to be less active than cis(Z)-isomers.
(2) Insoluble collagen was found to bind electrostatically to chondromucoprotein.
(3) Molecular biology and electrophysiology have shown different mechanisms of action on this sodium channel, which depend on the chemical structure and electrostatic charge of the local anaesthetic molecule.
(4) This change may be related to observed alterations of electrostatic parameters of the enzyme (pK of the pH dependence of the enzyme activity, rate of inactivation by H2O2), although it preserves a high efficiency of dismutation at neutral pH.
(5) In this way a complete description is given of both the electrostatic and the dielectric properties of the enzyme.
(6) From the variation of Kd with ionic strength, it is inferred that (i) 85% of the heparin--inhibitor binding energy i due to electrostatic interactions, (ii) about seven ionic interactions are involved in heparin--inhibitor binding.
(7) These observations suggest the blocking by Mgi2+ of the large-conductance, Ca(2+)-activated K+ channel is mainly nonspecific, competitive with K+, and at least partially electrostatic in nature.
(8) This suggests that the red shift in the absorption maximum of SR-I (587 nm) compared with HR (578 nm) and BR (568 nm) is due to a reduction of the electrostatic interaction between the protonated Schiff base group and its protein counterion.
(9) An electrostatic copying machine was used to model the perception of simultaneous brightness contrast.
(10) This suggested that even minor interferences with the electrostatic equilibrium of the IgG3 by the binding of charged hapten molecules induced dramatic changes in the solubility of the IgG3 mAb at low temperature.
(11) The binding of charged ligands to proteins is one way of achieving an alteration in protein electrostatic charge.
(12) The complex is stabilised by hydrogen bonding, electrostatic and van der Waals interactions.
(13) Approximately 14% of the binding energy is derived from electrostatic interactions.
(14) When framed by ET theory this pattern is fully understandable in terms of variations in reduction potentials and electrostatic interactions, caused by the protonation equilibria.
(15) These results indicate that the polypeptide chain, driven by energetics (nonbonded and electrostatic interactions), is folded into a typical left-handed twisted four-helix bundle with an approximately 4-fold symmetric array, as observed in most four alpha-helix proteins.
(16) Forces analogous to hydrophobic and electrostatic interactions probably participate in this process.
(17) The proposed model includes electrostatic contacts between conserved cytochrome b5 carboxylates Glu-44, Glu-48, Asp-60, and the exposed heme propionate with cytochrome P-450cam basic residues Lys-344, Arg-72, Arg-112, and Arg-364, respectively.
(18) Based on modelling considerations it was proposed that milk-clotting activity of chymosin is associated with electrostatic interactions of a charged segment His-Pro-His-Pro-His (98-102) of casein and the outer loop of the enzyme containing Glu-244,Asp-246 and Asp-248.
(19) The three-dimensional structures, molecular conformations, and electrostatic potentials of the R-E-, S-E-, R-Z-, and S-Z-isomers of 10-hydroxynortriptyline were examined by computer graphics, molecular mechanical energy calculations, and molecular dynamics simulations in vacuo and in aqueous solution.
(20) The precipitation of proteins with dextran sulphate or polyphosphates, which is due to electrostatic interaction, depends on the pH value and the electrolyte content of the solution.
Physics
Definition:
(n.) The science of nature, or of natural objects; that branch of science which treats of the laws and properties of matter, and the forces acting upon it; especially, that department of natural science which treats of the causes (as gravitation, heat, light, magnetism, electricity, etc.) that modify the general properties of bodies; natural philosophy.
Example Sentences:
(1) The absorption of ingested Pb is modified by its chemical and physical form, by interaction with dietary minerals and lipids and by the nutritional status of the individual.
(2) The performance characteristics of the CCD are well documented and understood, having been quantified by many experimenters, especially in the physical sciences.
(3) The difference in HDL and HDL2 cholesterol concentrations between the MI+ and MI- groups or between the MI+ and CHD- groups persisted after adjustment by analysis of covariance for the effect of physical activity, alcohol intake, obesity, duration of diabetes, and glycemic control.
(4) After a period on fat-rich diet the patient's physical fitness was increased and the recovery period after the acute load was shorter.
(5) DI James Faulkner of Great Manchester police said: “The men and women working in the factory have told us that they were subjected to physical and verbal assaults at the hands of their employers and forced to work more than 80-hours before ending up with around £25 for their week’s work.
(6) Throughout the period of rehabilitation, the frequent changes of a patient's condition may require a process of ongoing evaluation and appropriate adjustments in the physical therapy program.
(7) In a further study 1082 patients with a negative or doubtful result of the physical examination were investigated using ultrasound.
(8) We studied the effects of the localisation and size of ischemic brain infarcts and the influence of potential covariates (gender, age, time since infarction, physical handicap, cognitive impairment, aphasia, cortical atrophy and ventricular size) on 'post-stroke depression'.
(9) In spite of important differences in size, chemical composition, polymer density, and configuration, biological macromolecules indeed manifest some of the essential physical-chemical properties of gels.
(10) The cyclical nature of pyromania has parallels in cycles of reform in standards of civil commitment (Livermore, Malmquist & Meehl, 1958; Dershowitz, 1974), in the use of physical therapies and medications (Tourney, 1967; Mora, 1974), in treatment of the chronically mentally ill (Deutsch, 1949; Morrissey & Goldman, 1984), and in institutional practices (Treffert, 1967; Morrissey, Goldman & Klerman (1980).
(11) A 68 year-old man with a history of right thalamic hemorrhage demonstrated radiologically in the pulvinar and posterior portion of the dorsomedian nucleus developed a clinical picture of severe physical sequelae associated with major affective, behavioral and psychic disorders.
(12) Taken together with other physical studies on the effect of vitamin E on (unsaturated) phospholipids, these results indicate that vitamin E could influence the physical properties of membrane phospholipids in addition to its known antioxidant role.
(13) A careful history, a thorough physical examination, and an appropriate selection of tests will identify these patients.
(14) The results confirm that physical training is clinically effective in patients suffering from claudication.
(15) The experimental results for protein preparations of calmodulin in which Ca2+ was isomorphically replaced by Tb3+ were obtained by a spectrometer working at the Institute of Nuclear Physics.
(16) The studies reported here examined physical interactions between V. cholerae O1 and natural plankton populations of a geographical region in Bangladesh where cholera is an endemic disease.
(17) The weakness was treated by intensive physical rehabilitation with complete and sustained recovery in all cases.
(18) The physical effects of chlorination as demonstrated by experiments with batters and cakes and by physicochemical observations of flour and its fractions are also considered.
(19) Variables from the medical history, physical examination, laboratory tests, and radiographs were used to develop different sets of criteria to serve different investigative purposes.
(20) The initial history, physical findings, and roentgenographic examinations are found on this page.