(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.
Methamphetamine
Definition:
Example Sentences:
(1) Methamphetamine abuse is increasing and methamphetamine is second only to alcohol as a positive finding in cases submitted to the San Diego Sheriff's Crime Laboratory.
(2) Aggressive behavior was evoked by introducing a group-housed male mouse (intruder) into the home cage of the isolated or nonisolated mouse (resident).d-Amphetamine, methamphetamine, methylphenidate, cocaine, and L-dopa decreased attack and threat behavior by resident mice, the isolates requiring 2--4 times higher drug doses for the antiaggressive effects than the nonisolates, d-Amphetamine, methamphetamine, and methylphenidate caused intruder mice to be more frequently attacked by their non-treated resident opponents, to escape more often, to assume the defensive upright posture less, and to move about more often.
(3) 1-Methyl,1'-hexanoic acid-4,4'-bi-pyridinium, 4-amino-D,L-phenylalanine-diazo-coupled diquat, p-amino-methamphetamine as haptens were synthesized and coupled to bovine serum albumin (BSA) directly or to BSA via glutaraldehyde, and an antigen of MT was prepared by binding MT to BSA with the Mannich reaction.
(4) For a decade, relatively little methamphetamine was submitted to street-drug analytical labs.
(5) ), given 15 min before each dose of methamphetamine, totally prevented the methamphetamine-induced loss of tyrosine hydroxylase activity and partly prevented the loss of dopamine.
(6) Effects of dose, route of administration, and sex and strain differences on the metabolism of methamphetamine in vivo were investigated in rats.
(7) After ingesting 3,4-methylene-dioxy-methamphetamine (MDMA) and the monoamine oxidase (MAO) inhibitor phenelzine, a 50 year old male developed marked hypertension, diaphoresis, altered mental status, and hypertonicity lasting 5-6 hours.
(8) The method has been applied to the analysis of urine samples from monkeys singly and repeatedly treated with methamphetamine.
(9) After a 7-day abstinence period, a challenge test with methamphetamine alone revealed supersensitivity of methamphetamine-sensitized rats to subsequent methamphetamine, whereas rats pretreated with repeated methamphetamine in combination with BMY 14802 exhibited no difference in the intensity of stereotypy from rats pretreated with repeated saline.
(10) The report by University of New South Wales (UNSW) researchers examined available data on drug-related deaths, hospital admissions, and treatment services, and also found that within methamphetamine related deaths, the drug was the underlying cause in 23%.
(11) The effects of quinidine and cimetidine on methamphetamine-induced stereotyped behavior were studied in rats.
(12) Both the presence of arterial inflammation and increased blood pressure caused by sympathomimetic action of methamphetamine are probably the important factors in the occurrence of intracranial hemorrhage associated with methamphetamine.
(13) Remarkable changes in the circadian activity rhythm of rats were observed when they were chronically treated with methamphetamine dissolved in drinking water.
(14) After grafting, however, DOPAC and HVA restored to control levels and responded to methamphetamine with decreases as was observed in control animals.
(15) Compared with placebo and methamphetamine, diphenhydramine caused subjects no experience geophysical time as passing more slowly, but the drug had no significant effects on the visual search or divided-attention tasks.
(16) The present results suggest that the induction of hypothalamic IL-1 beta mRNA by methamphetamine is mediated by beta-adrenoceptors in the brain.
(17) This study proposes a method capable of separating the pharmacodynamic from the pharmacokinetic component in the methamphetamine (MA) hyperactivity potentiation induced by antidepressants.
(18) The effects of 5-HT3 receptor antagonists, MDL72222 and ICS205-930, on cocaine- and methamphetamine-induced place preference were examined.
(19) YM-08050 was more potent than either HPD or CPZ in inhibitory effects on a variety of behaviors such as apomorphine-induced stereotypes behavior and emesis, methamphetamine-induced stereotyped behavior, conditioned avoidance response and open field behavior.
(20) Bilateral injection of CCK-8 (1 microgram per side) into the nucleus caudatus significantly reduced the locomotor hyperactivity induced by methamphetamine.