(n.) The regular form which a substance tends to assume in solidifying, through the inherent power of cohesive attraction. It is bounded by plane surfaces, symmetrically arranged, and each species of crystal has fixed axial ratios. See Crystallization.
(n.) The material of quartz, in crystallization transparent or nearly so, and either colorless or slightly tinged with gray, or the like; -- called also rock crystal. Ornamental vessels are made of it. Cf. Smoky quartz, Pebble; also Brazilian pebble, under Brazilian.
(n.) A species of glass, more perfect in its composition and manufacture than common glass, and often cut into ornamental forms. See Flint glass.
(n.) The glass over the dial of a watch case.
(n.) Anything resembling crystal, as clear water, etc.
(1) Such a signal must be due to a small ferromagnetic crystal formed when the nerve is subjected to pressure, such as that due to mechanical injury.
(2) A comprehensive review of the roentgenographic features of calcium pyrophosphate crystal deposition disease (pseudogout) is presented.
(3) CW Nd:YAG light transmitted by fiber optic cable and sapphire crystal was applied transsclerally to the ciliary body of pigmented and albino rabbits.
(4) The crystal structure of the biological stain, "acridine orange," has been determined.
(5) Urinalysis revealed a low pH, increased ketones and bilirubin excretion, dark yellowish change in color, the appearance of "leaflet-shaped" crystals and increased red blood cells and epithelial cells in the urinary sediment, increased water intake, decreased specific gravity and decreased sodium, potassium and chloride in the urine.
(6) Early in the regression process, cholesterol esters are reduced at least partly by hydrolysis to yield cholesterol, some of which may crystallize and inhibit rapid regression.
(7) Here we determine the position of bound ADP diffused into the recA crystal.
(8) The virus material in these crystals had been subjected to treatment with EDTA at pH 8.0 before crystallization at pH 6.5.
(9) Results obtained show that chlorophyll is more active than other inhibitors studied and suggest a higher surface adsorption intensity on the primary sources of the crystal surface.
(10) The "Mg(2+)-Sarkosyl crystals" (M band) technique distinguishes between membrane-bound and free intracellular DNA.
(11) The molecular structure of the hexagonal crystal form of porcine pepsin (EC 3.4.23.1), an aspartic proteinase from the gastric mucosa, has been determined by molecular replacement using the fungal enzyme, penicillopepsin (EC 3.4.23.6), as the search model.
(12) In vitro experiments show that these macromolecules are able to interact with specific faces of different crystals, influencing both nucleation and crystal growth.
(13) 2 Each of the drugs significantly increased leucocyte cyclic AMP content within 3 h of the injection of crystals.
(14) For Kevin Phillips, just like Wilfried Zaha, this might have been his final act as a Crystal Palace player.
(15) In ancillary studies, multiple cycles of direct dissolution of UCB crystals revealed a progressive decrease in aqueous solubility of UCB as fine crystals were removed; this effect was minimal in CHCl3.
(16) Six dogs were instrumented with electromagnetic flow probes and subendocardial ultrasonic crystals.
(17) The crystallization of the lipase was successfully carried out.
(18) The values of the energy level distributions in crystals obtained from the measurements and analysis reported here are compared with those obtained by a different method for the same protein complex in frozen solution.
(19) The crystal structure of proteolytically modified human ACT has been solved at 2.7-A resolution (Baumann et al., 1991).
(20) These observations support our hypothesis that calcium pyrophosphate dihydrate crystal deposition in joints is regulated by the physical chemical gel state of the connective tissue matrix.
Dislocation
Definition:
(n.) The act of displacing, or the state of being displaced.
(n.) The displacement of parts of rocks or portions of strata from the situation which they originally occupied. Slips, faults, and the like, are dislocations.
(n.) The act of dislocating, or putting out of joint; also, the condition of being thus displaced.
Example Sentences:
(1) One developed recurrent dislocation of the shoulder.
(2) Attempts to eliminate congenital dislocation of the hip by detecting it early have not been completely successful.
(3) Thirteen patients had had a posterior dislocation with an associated fracture of the femoral head located either caudad or cephalad to the fovea centralis (Pipkin Type-I or Type-II injury), one had had a posterior dislocation with associated fractures of the femoral head and neck (Pipkin Type III), two had had a posterior dislocation with associated fractures of the femoral head and the acetabular rim (Pipkin Type IV), and three had had a fracture-dislocation that we could not categorize according to the Pipkin classification.
(4) Eight cases of calcification following anterior dislocation of the head of the radius are described.
(5) Unstable subcapital fractures and dislocation fractures of the humerus can usually be set by closed reduction.
(6) Formation of the functional contour plaster bandage within the limits of the foot along the border of the fissure of the ankle joint with preservation of the contours of the ankles 4-8 weeks after the treatment was started in accordance with the severity of the fractures of the ankles in 95 patients both without (6) and with (89) dislocation of the bone fragments allowed to achieve the bone consolidation of the ankle fragments with recovery of the supportive ability of the extremity in 85 (89.5%) of the patients, after 6-8 weeks (7.2%) in the patients without displacement and after 10-13 weeks (11.3%) with displacement of the bone fragments of the ankles.
(7) Dislocation of the endoprosthesis was found in the 15 hands with unimproved abduction.
(8) Either reagent dislocates FAD from the holoenzyme, leaving a characteristic mercaptide derivative of the apoenzyme.
(9) We performed a combined one-stage approach for the treatment of eighteen spastic subluxated or dislocated hips in eleven children who had cerebral palsy.
(10) The authors' review of the literature did not reveal a similar case involving a dislocation of the first and second metatarsophalangeal joints.
(11) Ten patients gave a family history of recurrent dislocation of the patella and seven patients showed generalised joint laxity.
(12) In case 2, a 26-year-old man sustained an open total dislocation of the talus with a severe crush wound and impaired circulation to the foot.
(13) A case of unilateral anterior dislocation of the shoulder after a shock of 380 volts is presented here.
(14) While acromioclavicular joint injury is not uncommon, a complete posterior dislocation in which the distal clavicle penetrates and is entrapped by the trapezius muscle is among the most rare.
(15) In patients with spastic paraplegia presenting with recurrent dislocation of the hip, operative treatment combining a soft tissue repair and a bone block to augment the acetabulum is recommended.
(16) Brachial artery rupture is the usual vascular injury associated with a compound elbow dislocation.
(17) This fracture was isolated in one case, being in the other six cases combined with injuries, either to acromioclavicular dislocation or to fracture of the superior glenoid cavity disorder.
(18) The case is presented of a patient sustaining cervical spine dislocation and quadriplegia attributed to impingement upon a 3-point attachment harness restraint.
(19) Hypertension consequent upon increasing brain edema, and intercerebral pressure gradient which is the cause of transverse dislocation diminish with the use of a method which provides for hydrodynamic equilibrium.
(20) A case of simultaneous bilateral traumatic dislocation of the hip is reported.