(n.) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18.
(n.) Scheelite, or calcium tungstate.
Example Sentences:
(1) Moments later, explosive charges blasted free two tungsten blocks, to shift the balance of the probe so it could fly itself to a prearranged landing spot .
(2) This in vivo incorporation of tungsten was competitively hindered by molybdenum.
(3) The results of transmission measurements for neutrons, cobalt-60 gamma-rays, and 10 and 15 MV photons made with close-packed arrays of tungsten rods are presented.
(4) Using a tungsten microelectrode, activities of medullary inspiratory neurons were recorded around nucleus ambiguus.
(5) Treatment was administered with white light produced by a commercially available halogen-tungsten lamp.
(6) The results support the hypothesis that mild steel welding and to a lesser extent stainless steel welding with tungsten inert gas is associated with reduced semen quality at exposure in the range of the Danish process specific threshold limit values of welding.
(7) All xeroradiographic measurements were made with a tungsten target source with aluminum filtration at half-value layers of 1.5 to 1.56 mm Al.
(8) The electrode consists of a 30 gauge stainless steel cannula through which multiple strands of 13 micron insulated tungsten microwires are threaded.
(9) Under these conditions, blue absorbing intermediate(s) is (are) formed, the time constant of regeneration of rhodopsin is much faster than after long tungsten bleaches, and the kinetic equation is not valid.9.
(10) Dense projections of the presynaptic grid are most sensitive to hypoxia: their height, distinctness of the frame, and the intensity degree of phosphoric tungsten acid staining decrease.
(11) For larger angles some discrepancies appear which could be either due to increased filtration by tungsten (surface roughness) or limited applicability of the data used.
(12) The uptake of cobalt by macrophages in the presence of tungsten carbide was found to be increased.
(13) A previous study from this laboratory, using morphological and biochemical (LDH release) parameters, has shown that tungsten carbide-cobalt dust exhibits a greater cytotoxicity toward isolated macrophages than cobalt metal powder alone.
(14) After a recovery period of approximately one month, physiological recordings were made with tungsten micro-electrodes from the central nucleus of the inferior colliculus of animals with SOC lesions.
(15) A high prevalence of gout among workers of the mining industry and early age at the onset of disease suggest probable association of gout with some industrial factors (manganese, tungsten, molybdenum, bismuth).
(16) Biological systems show a marked preference for molybdenum over tungsten.
(17) To determine the physiological role of xanthine oxidase in renal ischemia, we depleted rats of xanthine oxidase by feeding tungsten.
(18) A cross-sectional study of 1,039 tungsten carbide (TC) production workers was carried out.
(19) Intercellular interconnections in neuropil of dorsal ganglia in the subpharyngeal complex and nerves have been studied in a mature snail (Helix pomatia), dimensions of the shell--3.0 X 3.5 sm, after double fixation (glutaraldehyde and osmium tetraoxide) and treatment with phosphoric tungsten acid.
(20) Images of DNA and ribosomal subunits contrasted by sputter shadowing with tungsten are shown.
Wolfram
Definition:
(n.) Same as Wolframite.
Example Sentences:
(1) The authors have examined some electrophysiologic data in two couples of siblings with Wolfram's syndrome and in the unaffected sister of one of the couples.
(2) We present two unrelated patients with Wolfram syndrome, both of whom had the four cardinal features and several other neurologic abnormalities.
(3) Uric acid was determined in the supernatant of liver homogenate by means of a colorimetrically reductometric method with phospho-wolframic agent.
(4) The directional dependence was investigated and was far from uniform for the wolfram-shielded detector.
(5) Therefore, in Wolfram syndrome, a combined inner-ear and retrocochlear hearing loss may occur.
(6) Named Siri after the startup company which developed it and was bought by Apple in April 2010, the voice activation also links through to a non-Google search engine, Wolfram Alpha, which offers a type of online encyclopedia database of facts and theories.
(7) The prognosis of Wolfram syndrome is grim, with the occurrence of each additional component adding to the severity of the disease.
(8) The digitised version of an equally luxurious hardback coffee-table book by Popular Science columnist and Wolfram Research co-founder Theodore Grey, it features an utterly gorgeous interface, high-resolution digital – and 3D – imagery, and a wealth of scientific data and trivia.
(9) The possibility of an incomplete clinical expression of Wolfram syndrome, hypotheses of its genetic transmission, and diagnostic problems are discussed.
(10) Wolfram, or DIDMOAD, syndrome is a genetic disorder characterized by diabetes insipidus, diabetes mellitus, optic atrophy and deafness.
(11) Seven patients with a rare syndrome of diabetes insipidus (DI), diabetes mellitus (DM), optic atrophy (OA), neurosensory deafness (D), atony of the urinary tract, and other abnormalities (Wolfram or DIDMOAD syndrome) are reported.
(12) The preponderance of the HLA-DR2 antigen in the Wolfram syndrome is different from classic type I diabetes.
(13) Elements determined in samples over one weight percent were iron, manganese, chromium, wolfram, and cobalt.
(14) These cases highlight the neuro-degenerative aspects of the Wolfram syndrome.
(15) Four cases (belonging to two different families) of Wolfram's syndrome (WS), a rare congenital disease characterized in its complete form by insulin-dependent diabetes mellitus, optic atrophy, diabetes insipidus, deafness, and dilation of the urinary tracts are presented, and a review of the literature is included.
(16) The diabetes insipidus which accompanies the DIDMOAD (Wolfram) syndrome is thought to be hypothalamic in origin, though no formal study of vasopressin secretion in the syndrome has been published, and some data in the literature suggest a renal tubular defect.
(17) Conrad Wolfram , an entrepreneur and teacher, has a challenge for the British education system.
(18) We report on 3 patients with the rare syndrome of diabetes insipidus, diabetes mellitus, optic atrophy, neurosensory deafness, atony of the urinary tract and other abnormalities (DIDMOAD or Wolfram's syndrome).
(19) The clinical and electrophysiologic findings in 11 cases of Wolfram syndrome are presented.
(20) For an idea of the vast range of numbers a 64-bit CPU can represent, imagine that a single bit had the physical volume of a grain of rice – 0.075ml according to Wolfram Alpha .