(n.) One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356¡ Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients. The element and its compounds are active poisons. Specific gravity from 5.7 to 5.9. Atomic weight 75. Symbol As.
(n.) Arsenious oxide or arsenious anhydride; -- called also arsenious acid, white arsenic, and ratsbane.
(a.) Pertaining to, or derived from, arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.
Example Sentences:
(1) Each group was further divided into two groups; one was given the diet containing 100ppm of arsenic trioxide and the other a diet containing "arsenic compound" (100ppm as arsenic trioxide).
(2) An acute massive epidemic of arsenic poisoning in Argentina involved 718 subjects.
(3) However, there was unequivocal chronic arsenic intoxication.
(4) ARSENIC is a computerized system providing assistance for telephone consultation in poison centers.
(5) The concentrations of arsenic (As) and gallium (Ga) in solution and the As-GA ratio on the surface of the GaAs increased continuously as the time of contact with the aqueous solution increased.
(6) We studied the role of S-adenosylmethionine (SAM) as a methyl group donor in the methylation of inorganic arsenic in mammalians.
(7) The second tool is trivalent arsenical affinity chromatography, which we use to show novel direct interactions between trivalent arsenicals and several proteins from 3T3-L1 adipocytes including the insulin-responsive glucose transporter GLUT4, the insulin proreceptor, and both the alpha and beta subunits of tubulin.
(8) For both children and adults, the arsenic values were similar to those in a limited Danish reference population.
(9) This seems to be the first experimental confirmation of carcinogenicity of arsenic-containing pesticides used formerly in vineyards.
(10) Genotoxic evaluations of arsenic trioxide, dieldrin, lead tetraacetate and their nine binary and one tertiary mixtures were performed using the Tradescantia micronucleus (Trad-MN) assay.
(11) On the other hand, the major arsenic compound in fish, crustacea and molluscs has been identified as arsenobetaine, which is an arseno-analog of glycinebetaine, a very common osmo-regulator in living organisms.
(12) This study suggests that the much greater induction of morphological alterations, such as increased heterochromatin, in lung endothelial nuclei than in the liver might explain the high risk of lung cancer by arsenics, and that there may be a close relationship between heterochromatin alteration and DNA damages.
(13) Arsenic moves in a dispersive manner through air and water and is in physical and chemical equilibrium in many substrates.
(14) First-time measurements of the potentially toxic inorganic species of arsenic (arsenite and arsenate) have been obtained in fine (less than 2.5 microns AD) and coarse (greater than 2.5 microns AD) atmospheric particles in the Los Angeles area.
(15) Among various miscellaneous inhibitors, quercetin, disulfiram, and the Ca-complexing agents arsenazo I and III showed marked activity, the latter exclusively on the arsenical-resistant T. brucei.
(16) The patient has a history of occupational exposure to arsenic 42 years before.
(17) Meanwhile, the excess of respiratory cancers alone will continue to increase 5% for each microgram of arsenic present per m3 of air breathed in the work area, or excreted in every one-third liter of urine.
(18) Brazil dam burst: BHP boss to inspect disaster zone with dozens still missing Read more Brazil’s national water agency, ANA, has warned that the presence of arsenic, zinc, copper and mercury now present in the Rio Doce make the water untreatable for human consumption.
(19) When crab meat was ingested, none of these four arsenic species were observed at elevated levels until the urine was heated in 2N NaOH.
(20) The occurrence of chromosome aberrations was studied in short-term cultured lymphocytes from nine workers exposed to arsenic at the Rönnskär smeltery in northern Sweden.
Nonmetallic
Definition:
(a.) Not metallic.
(a.) Resembling, or possessing the properties of, a nonmetal or metalloid; as, sulphur is a nonmetallic element.
Example Sentences:
(1) Nonmetallic foreign bodies were embedded in cadaver feet.
(2) A total of 30 plaque samples from patients with metallic restorations, and 30 plaque samples from the patients with nonmetallic restorations obtained.
(3) The spreading of needle-like minerals in the country is studied, which are of no industrial importance, but are contained in some of course and nonmetallic mineral raw materials.
(4) The presented data provide the first evidence for the binding of a nonmetallic cellular component to MT.
(5) It also highlights the need for the emergency physician to be concerned about intracranial penetration when treating intranasal foreign bodies, particularly those of the nonmetallic type.
(6) The results demonstrated that not only are legionellae capable of colonizing various metallic and nonmetallic surfaces but that they are preferentially found on surfaces.
(7) Upon metallurgical examination, moderate to severe levels of gas porosity, interdendritic shrinkage, and nonmetallic inclusions were found in all of the devices.
(8) Hygienic requirements for the evaluation of nonmetallic materials are given.
(9) Statistical analysis revealed significant correlations between corrosion scores and the metallurgical properties of grain size and nonmetallic inclusion content.
(10) By embedding nonmetallic foreign bodies in cadaver feet and comparing standard x-rays to xerograms, the examiner should be able to confirm or disprove this premise.
(11) The nonmetallic inclusions in the fracture surfaces were identified as SiO2 (quartz) which was derived from an ingredient of an investment by comparing the inclusion with the reference standards on the characteristic X-ray O Kalpha spectra by EPMA.
(12) Menadione and n-hexane caused the greatest accumulation of hepatic MT among these nonmetallic compounds (about 13-fold).
(13) Using this analytic mode, nonmetallic intraocular and intraorbital foreign bodies can be differentiated from each other and from metallic foreign bodies, although individual metallic foreign bodies cannot be identified with respect to specific composition.
(14) The nonmetallic calcium phosphate glass and ceramics technology available today provides materials that may counteract the effects of initial device instability by not relying on mechanical means of retention, alone, but chemical as well.
(15) Magnetic resonance imaging (MRI) is a technique that might allow the detection and localization of nonmetallic intraocular foreign bodies.
(16) For this purpose, we have developed a fiberoptic radiometer system which is based on a nonmetallic, infrared fiber probe, which can operate either in contact or noncontact mode.
(17) Computed tomography is necessary to determine the presence of a metallic foreign body, but when the CT scan is negative, MRI may still detect small nonmetallic foreign bodies.
(18) The radar cross-section was further reduced because the wings' leading and trailing edges were composed of nonmetallic honeycomb structures that do not reflect radar rays.
(19) We conclude that, when radiation therapy is necessary following mandibular reconstruction, homogeneity of dose is maintained and local soft-tissue reactions to excessive irradiation may be avoided by using a nonmetallic tray.
(20) Of the nonmetallic materials seen during biopsies, suture materials and vegetable matter are most often observed.