(n.) An instrument consisting of two blades, commonly with bevel edges, connected by a pivot, and working on both sides of the material to be cut, -- used for cutting cloth and other substances.
(n.) A similar instrument the blades of which are extensions of a curved spring, -- used for shearing sheep or skins.
(n.) A shearing machine; a blade, or a set of blades, working against a resisting edge.
(n.) Anything in the form of shears.
(n.) A pair of wings.
(n.) An apparatus for raising heavy weights, and especially for stepping and unstepping the lower masts of ships. It consists of two or more spars or pieces of timber, fastened together near the top, steadied by a guy or guys, and furnished with the necessary tackle.
(n.) The bedpiece of a machine tool, upon which a table or slide rest is secured; as, the shears of a lathe or planer. See Illust. under Lathe.
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.
Sheep
Definition:
(n. sing. & pl.) Any one of several species of ruminants of the genus Ovis, native of the higher mountains of both hemispheres, but most numerous in Asia.
(n. sing. & pl.) A weak, bashful, silly fellow.
(n. sing. & pl.) Fig.: The people of God, as being under the government and protection of Christ, the great Shepherd.
Example Sentences:
(1) In each sheep there was a significant negative correlation between the glucose and corticosteroid concentrations in both maternal and fetal plasma, and there were positive correlations between the maternal and fetal plasma concentrations of glucose, and between the glucose and fructose concentrations of fetal plasma.
(2) Anesthetized sheep (n = 6) previously prepared with a lung lymph fistula underwent 2 hr of tourniquet ischemia of both lower limbs.
(3) The mechanism by which pertussis toxin (PT) breaks the unresponsiveness of delayed-type hypersensitivity (DTH) to sheep red blood cells (SRBC) was examined in B10 mice.
(4) Blood flow was measured in leg and torso skin of conscious or anesthetized sheep by using 15-micron radioactive microspheres (Qm) and the 133Xe washout method (QXe).
(5) Base-line HPV was determined by measuring the change in pulmonary vascular resistance (PVR) while sheep breathed 12% O2 for 7 min.
(6) of about 330 000 for the elementary peptide chains of pig and sheep thyroglobulin.
(7) However, in GF rats and in rats monoassociated with viable P. acnes, parenteral injection of killed P. acnes antigen inhibited the plaque-forming cell response to sheep erythrocytes.
(8) The plasma, urine, and tissue sulfathiazole concentrations were determined at various times following intravenous administration to 12 sheep.
(9) As evidence, they show no mediated semantic-phonological priming during picture naming: Retrieval of sheep primes goat, but the activation of goat is not transmitted to its phonological relative, goal.
(10) It is suggested that contractile responses to electrical stimulation in isolated sheep urethral smooth muscle are mediated by the sympathetic nervous system, mainly through release of noradrenaline stimulating postjunctional alpha 1-adrenoceptors.
(11) The dumplings could also be served pan-fried in browned butter and tossed with a bitter leaf salad and fresh sheep's cheese for a lighter, but equally delicious option.
(12) We measured the steady-state volumes of distribution for radioactive chloride, sucrose, and albumin in the lung of six anesthetized, spen-thorax sheep.
(13) Haematological and blood biochemical changes in the sheep, as well as fecundity of gastrointestinal nematodes, suggested the hosts were immunosuppressed.
(14) Periods of spontaneously occurring hypoxia have been observed in fetal sheep.
(15) The efficacy of other anthelmintics which have been used against paramphistomes in sheep is reviewed.
(16) A minimum of 4 sheeps' heads, obtained weekly over 24 months from the Pretoria Municipal Abattoir, was examined for infestation.
(17) The intravenous administration of ovine placental lactogen to pregnant and non-pregnant sheep produced significant acute decreases in plasma free fatty acid, glucose and amino nitrogen concentrations.
(18) In this ewe, and in 4 of 7 other sheep diagnosed as having abomasal emptying defects, aspartate transaminase and sorbitol dehydrogenase activities were high, and histopathologic evidence of hepatic congestion and ischemia was found.
(19) Also, Gs failed to hemolyze sheep erythrocytes when there was hemolysis by virions or an amino-terminal peptide of the VSV glycoprotein.
(20) It contained approximately 1% HP+cells and approximately 3% of all lymphocytes forming rosettes which sheep erythrocytes (E+ cells) present before fractionation.