What's the difference between deformation and shear?

Deformation


Definition:

  • (n.) The act of deforming, or state of anything deformed.
  • (n.) Transformation; change of shape.

Example Sentences:

  • (1) Gross deformity, point tenderness and decrease in supination and pronation movements of the forearm were the best predictors of bony injury.
  • (2) Rigidly fixing the pubic symphysis stiffened the model and resulted in principal stress patterns that did not reflect trabecular density or orientations as well as those of the deformable pubic symphysis model.
  • (3) Cloacal exstrophy, centered on the maldevelopment of the primitive streak mesoderm and cloacal membrane, results in bladder and intestinal exstrophy, omphalocele, gender confusion, and hindgut deformity.
  • (4) In a family with hereditary elliptocytosis and an abnormality in spectrin self-association, the membranes had decreased deformability and stability.
  • (5) The most important causal factor, well illustrated by pressure studies, was the presence of a dynamic or static deformity leading to local areas of peak pressure on insensitive skin.
  • (6) Predominantly observed defects included neural crest cells in ectopic locations, both within and external to the neural tube, and mildly deformed neural tubes containing some dissociating cells.
  • (7) Emergency CT showed evidence of pericardial effusion suggesting hemopericardium, enlargement of the ascending aorta and a peripheral semilunar filling defect which caused a slight deformation of the true channel.
  • (8) Changes in the determinants of blood viscosity (packed cell volume, plasma viscosity, red cell aggregation, and red cell deformability) were studied on day 1 and day 5.
  • (9) A model for left ventricular diastolic mechanics is formulated that takes into account noneligible wall thickness, incompressibility, finite deformation, nonlinear elastic effects, and the known fiber architecture of the ventricular wall.
  • (10) As a consequence of deformation from spherical-to-cylindrical shape in the microvasculature, demands for increased surface membrane area leads to increases in surface membrane tension above critical levels for rupture, and the cancer cells are rapidly and lethally damaged.
  • (11) Within the restriction provided by surface area and volume, the intrinsic properties of the membrane and cytoplasm determine the deformability characteristics of the red cell.
  • (12) In 12 patients with lower macrognathia we have applied a technique allowing to prevent the postsurgical recidives of the jaw deformation.
  • (13) Filtration of red blood cells through agarose gels (Sephadex, Sepharose, and Superose) was used to assess red cell deformability and simultaneously obtain fractions of red cells with different properties.
  • (14) Such deformities may be the only future indication for the use of this operation as these knees do not do well when treated by tibial osteotomy.
  • (15) Richard now is presented, albeit somewhat inconsistently, as evil in response to social ostracism because of his ugly deformities.
  • (16) Calcium-dependent ATPase, adenylate cyclase and phosphorylation of erythrocyte membrane proteins have been found abnormal in various conditions: hereditary spherocytosis, sickle-cell anemia, progressive muscular dystrophies, all of these disorders being associated with a decreased deformability of the erythrocyte.
  • (17) Thus many athletes sustain dental-related injuries resulting in deformity and discomfort which may persist throughout their lives.
  • (18) Type II had the anastomosis too high on the gastric pouch, type III was due to an obstructing marginal ulcer, and type IV had a pouchlike deformity develop in the upper jejunum at the anastomosis that gradually compressed the outflow tract.
  • (19) This procedure was done in 4 patients and corrected the deformity efficiently, allowing for satisfactory sexual function.
  • (20) Angiography was performed on 74 hands of 70 patients in this series, and attempts were made to correlate these with the types of the deformities.

Shear


Definition:

  • (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.

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