(v. t.) To cut, clip, or sever anything from with shears or a like instrument; as, to shear sheep; to shear cloth.
(v. t.) To separate or sever with shears or a similar instrument; to cut off; to clip (something) from a surface; as, to shear a fleece.
(v. t.) To reap, as grain.
(v. t.) Fig.: To deprive of property; to fleece.
(v. t.) To produce a change of shape in by a shear. See Shear, n., 4.
(v. t.) A pair of shears; -- now always used in the plural, but formerly also in the singular. See Shears.
(v. t.) A shearing; -- used in designating the age of sheep.
(v. t.) An action, resulting from applied forces, which tends to cause two contiguous parts of a body to slide relatively to each other in a direction parallel to their plane of contact; -- also called shearing stress, and tangential stress.
(v. t.) A strain, or change of shape, of an elastic body, consisting of an extension in one direction, an equal compression in a perpendicular direction, with an unchanged magnitude in the third direction.
(v. i.) To deviate. See Sheer.
(v. i.) To become more or less completely divided, as a body under the action of forces, by the sliding of two contiguous parts relatively to each other in a direction parallel to their plane of contact.
Example Sentences:
(1) The sticking probability decreased as the cell receptor concentration was lowered from approximately 10(4) to 10(2) receptors per 4-microns diam liposome and as the shear rate increased from 5 to 22 s-1.
(2) Gonococcal outer membranes were purified by differential ultracentrifugation of sheared organisms treated with EDTA.
(3) This movement generates forward and backward shearing force in the stagnation region as the separated flow migrates back and forth.
(4) This model characterized the abnormal flow by a weak fluctuation of wall shear stress at the site adjacent to the vessel wall.
(5) The hemolytic characteristics of 14 different polydimethyl-siloxane materials were studied, using a rotating disk device to shear whole human blood for 6000 sec.
(6) Since the antithrombin action of heparin fails to interrupt arterial thrombosis, a mediating role for thrombin (EC 3.4.21.5) in the formation of high-shear platelet-dependent thrombus has been unproven.
(7) A propensity for elevated shear in the deep cartilage layer near the contact periphery, observed in nearly all computed stress distributions, is consistent with previous experimental findings of fissuring at that level in the impulsively loaded rabbit knee.
(8) The development of a shear transducer, small enough to be worn comfortably under a normal foot, is described, along with a microcomputer controlled data logger.
(9) In an emergency, the devices use multiple mechanisms – including clamps and shears – to try to choke off the oil flowing up from a pipe and disconnect the rig from the well.
(10) Cement was pressurized into the cavity of the anatomic specimens, and the maximum interface shear strength between the cement plug and the bone was experimentally determined for each revision.
(11) At the divider side walls, wall shear stresses are relatively high and approximately follow the flow rate distribution in time.
(12) Platelet adhesion onto subendothelium of a damaged blood vessel depends upon the presence of von Willebrand factor (vWf) only at high flow shear rate.
(13) 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'.
(14) The accepted cause of this shear rate-dependent and time-dependent behavior is the progressive breakdown of rouleaux into individual red cells.
(15) The mean length of a population of microtubules containing GMPPCP increased only by 37% over a 150 min time period after shearing.
(16) By studying the kinetics of urease-catalyzed urea hydrolysis during application of hydrodynamic shear under varying chemical environments, we demonstrate that micromolar quantities of metal ions, in this case adventitious Fe, can accelerate the oxidation of thiol groups on urease and thus inactivate it when the protein is subjected to a shearing stress of order 1.0 Pa.
(17) The viscosity of these materials were measured by using the Ishida-Giken cone and plate high shear rheometer.
(18) The primate skull physical model data and the critical shear strain associated with the threshold for severe diffuse axonal injury were used to scale data obtained from previous studies to man, and thus derive a diffuse axonal injury tolerance for rotational acceleration for humans.
(19) Flagellar filaments were isolated from either culture fluid or concentrated cell suspensions that were subjected to shearing.
(20) Hemodilution seems particularly promising under hemodynamic condition of low shear stresses in vivo.
Sheat
Definition:
Example Sentences:
(1) In the absence of Ca2+ and in the presence of [ethylenebis(oxoethylenenitrilo)]tetraacetic acid (EGTA), the protein contains 30-35% alpha helix, 50% random coil, and 15-20% beta-pleated sheat.
(2) The biochemical and histochemical data may show that the anthocyanosides protect the altered capillary walls with a double mechanism: a) increasing the endothelium barrier-effect through a stabilisation of the membrane phospholipids and b) increasing the biosynthetic processes of the acid mucopolysaccharides of the connective ground substance, by restoring the altered mucopolysaccharidic pericapillary sheat.
(3) After describing the morphological and biological relations in the intact human flexor tendon and tendon sheat unit authors deal in details with the severe injuries of the flexor tendons inside the tendon sheat, having a bad prognosis.
(4) The importance of the integrity of the tendon sheat--subcutis--skin unit is presented.
(5) For this purpose the generalized logistic function is chosen for a quantitative and qualitative description of the connection between axon caliber and myelin sheat thickness.
(6) In spleen NK-9 positive cells were located mainly in periarteriolar lymphocyte sheats and in germinal centers.
(7) There was a moderate to severe degeneration of the white matter consisting of marked axonal degradation and distension and degradation of myelin sheats in all parts of the spinal cord as well as in the medulla oblongata.
(8) Ultrastructural study showed an excess of glycogen granules below the sarcolemmal sheat and between myofibrils, often associated with clusters of mitochondria.
(9) In the same area the staining for myelin sheats gives positive results.
(10) The bacteria isolated from the Aufwuchs mainly belonged to the genera Pseudomonas, Flavobacterium, Acinetobacter, Caulobacter, sheated bacteria and other gramnegative physiologically nonreactiv roads.
(11) Failure in myelin is rather the consequence of an early interruption of myelination as that of demyelination (a destruction of the sheats).
(12) The results of the present investigations may serve, over the description of the normal anatomical relations, as a comparison to other experiments of two-phase tendon transplantations with the formation of pseudo tendon sheats and also for clinical practice.
(13) All X-rays showed a clear outline of the spinal canal and the roof sheat.
(14) Three groups of 3 calves were infected with the following batches of third-stage larvae: (a) fresh, sheated; (b) fresh, exsheathed; (c) exsheathed, cryopreserved for 13 weeks in liquid nitrogen and subsequently thawed.
(15) Using the Copper thiocholine method for electron microscopic cytochemistry the reaction product was found at the axolemmal surface, in the cisternae of the endoplasmic reticulum of neurons and occasionally between the infoldings of the sheat cells surounding the axons.
(16) The recommendations go from gluing with fibrin glue only, if anything at all, over quilting stitches, perhaps in combination with silastic or teflon sheats or plates or these sheats alone, to the employment of various more substantial materials and in from 1 to even 14 days postoperatively.
(17) Application of the biostatistical procedure of empirical regression on a first data processing stage is demonstrated by examples from morphometrical research concerning the connection between axon caliber and thickness of myelin sheat of nerve fibers.
(18) Endothelial cell damage was recognized by morphological alterations during reformation of a coherent cell sheat after expulsion of damaged cells.
(19) fibulocalcaneare forms a groove which takes up the tendon sheat of the peroneal tendson.
(20) This observation clearly indicates that in this experimental disease it is not only the increased catabolism of lipid constituents furnishing the various membraneous structures, including myelin sheats, but also an overall impaired capacity of synthesing new lipids by the diseased cells of the nervous system which must be taken into consideration.