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1,535 results
  1. ... these tests, is to show the absence of silica and other substances insoluble in dilute hydrochloric acid, ... earthy salts, nor sulphates, nor chlorides : traces of silica, however, adhere to it with great obstinacy. Where ...
  2. ... slaty fracture, sectile and rather soft, containing charcoal silica, alumina, oxyde of iron, sulphur, sulphates of lime, ... usually con- tain fully half their weight of silica, and fre- quently other earths. To obtain pure ...
  3. ... The macrophage in allograft immunity. I. Effect of silica as a specific ... with particular reference to the relation- ship to lysosomes to cytoplasmic ...
  4. NLM Digital Collections - Chemical warfare agents and related chemical problems (Parts 1-2) 
    Publication: Washington, D.C. : Office of Scientific Research and Development, National Defense Research Committe, Division 9, 1946
    ... including treatment with ammonia, heat treatment, treatment with silica gel or charcoal, distillation under xarious pressures, flash ... compounds by hot platinum filaments or hot platinized silica gel to produce hydrogen fluoride is applicable to ...
  5. ... earthen crucible, by combining with some of the silica of Avhich it forms a species of glass, ... protoxide of antimony, with a variable proportion ojf silica, sometimes amounting to 10 per cent., and one ...
  6. NLM Digital Collections - A bibliographical sourcebook of compressed air, diving, and submarine medicine (Volume 2) 
    Publication: Washington, D.C. : Research Division, Project X-427, Bureau of Medicine and Surgery, Navy Department, 1948-1966
    ... scribed carbon monoxide indicators of the impreg- nated silica gel type. The determination of carbon monoxide in ... Salsbury. Car- bon monoxide indicators of the impregnated silica gel type. U. S. OSRD-NDRC. O. S. R. D. ...
  7. ... L.). The anti-bactericidal properties of col- loidal silica. Brit. J. Exper. Path., Lond., 1922-23, iii, ... Purdy (W. J.). The poisonous properties of colloidal silica. Brit. J. Exper. Path., Lond., 1922-23, iii, ...
  8. NLM Digital Collections - The principles and practice of surgery 
    Publication: Philadelphia : Lea Bros. & Co., 1889
    ... Esmarch, Tholen, Willard Parker, and W. L. Atlee; silica has been recommended by Mr. Fawcett Battye ; and ... deposits. They are called by Poland pseudo-calculi. Silica is occasionally met with as a constituent of ...
  9. ... 6. Starch cells. Sulphuric acid Oxide of iron. Silica or sand. Soda Lime......... .........................33 ...........................79 ......................... 3.35 ......................... ... 393, 396, 751, 8''7 ; see Ointment. Sand [ = silica, or quartz, &c, in grains] in wheat, 653, ...
  10. ... hydrochlo- ric acid, it is decomposed, and the silica remains insoluble. Most of the sulphates, when heated ... insoluble in Water and Acids. Sulphate of baryta. Silica. Sulphate of strontia. Chloride of silver. Chloride of ...
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