Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search help
1,212 results
  1. NLM Digital Collections - Public health laws, rules and regulations 
    Publication: Boise : Department of Public Health, [1943]
    resource.nlm.nih.gov/29211060R
    ... the employer, or to use the protective and safety devices furnished by his ... of silicon dioxide (siOj?) dust. Section 43-2116. DEFINITION OF DISABILITY ...
  2. NLM Digital Collections - The principles of chemistry : illustrated by simple experiments 
    Publication: Cambridge [Mass.] : Bartlett, 1852
    resource.nlm.nih.gov/60740620R
    ... o J3 cd X >> O O M 55 Silica, Alumina, Limt ;, Salts, Humus, 613. Carbon, oxygen, hydrogen, ... a lime plant, and this again by a silica plant, &c. In this way, it is possible ...
  3. NLM Digital Collections - A systematic handbook of volumetric analysis, or, The quantitative estimation of chemical ... 
    Publication: Philadelphia : P. Blakiston's Son, 1902
    resource.nlm.nih.gov/101585507
    ... with nitric acid, and again drying to render silica insoluble; the residue is again treated with dilute ... filter off, wash, ignite, and weigh the separated silica. Iron.—To the filtrate from the estimation of ...
  4. NLM Digital Collections - Encyclopaedia Americana: a popular dictionary of arts, sciences, literature, history, ... 
    Publication: Philadelphia : Carey & Lea, 1830-33
    resource.nlm.nih.gov/00110080RX9
    ... species has the following composition: Magnesia,..............50.6 Silica,................40.5 Oxide of iron,........... 8.9 Before ... 3. menilite, both analyzed by Klaproth, have yielded, Silica 1. 92.00 2. 90.00 3. 85. ...
  5. NLM Digital Collections - A compend of pharmacy 
    Publication: Philadelphia : P. Blakiston, Son & Co., 1895
    resource.nlm.nih.gov/101635569
    ... meer- schaum, asbestos, etc., and as an anhydride (silica) in sand, flint, quartz, etc. SILICA. Si02.—Silicic Anhydride.—ls obtained in a pure ... Na2SiOa + 2HCI = Si02 -f 2NaCI + H2O. Sodium Hydrochloric Silica. Sodium Water. Silicate. Acid. Chloride. 74 PHARMACY. LIQUOR ...
  6. NLM Digital Collections - The principles and practice of surgery 
    Publication: Philadelphia : Lea Bros. & Co., 1889
    resource.nlm.nih.gov/101598036
    ... 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 ...
  7. NLM Digital Collections - OSHA Industrial Hygiene Field Operation Manual, 1979 
    https://resource.nlm.nih.gov/101084435X224
    ... Coordination Item 26. (Cont 'd) ~ Sample Media Abbreviations Silica gel ... HA Gelman GN-4 filter GN-4 Mine Safety Appliance FWS-B filter. FWS~B For a ...
  8. NLM Digital Collections - The American new dispensatory : containing general principles of pharmaceutic chemistry ; ... 
    Publication: Boston : Printed and published by Thomas B. Wait and Sons, 1817
    resource.nlm.nih.gov/2574016R
    ... lime. Another source of impu- rity, is the silica which the sub-carbonate of potass generally contains. ... PREPARATIONS AND COMPOSITIONS. wkh the carbonic acid, the silica is precipitated and may be separated by filtration. ...
  9. NLM Digital Collections - The principles and practice of surgery 
    Publication: Philadelphia : Lea, 1882
    resource.nlm.nih.gov/101598031
    ... and W. L. Atlee, of this city, and silica has been recommended by Mr. FaAvcett Battye, of ... 167, 625 Shoulder girdle, 250 Sigmoid catheter, 871 Silica in calculi, 884 Silicate of potassium bandage, 83 ...
  10. NLM Digital Collections - Elements of chemistry : including the applications of the science in the arts 
    Publication: Philadelphia : Blanchard and Lea, 1853
    resource.nlm.nih.gov/60730410R
    ... CONTENTS. XI Oxalic Acid............................................................................... 276 ... 292 ...
first · previous · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · next · last