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.

2,874 results
  1. NLM Digital Collections - An introduction to radiological safety 
    Publication: Washington, D.C. : Bureau of Medicine and Surgery, Navy Department, [1947]
    ... large quantities of gas and large areas of barrier or membrane material are required. This means a great deal ... early stages, and large areas of por- ous membrane or barrier material. The volume of gas circulating throughout the ...
  2. NLM Digital Collections - Human anatomy (Volume 1) 
    Publication: Philadelphia : Lea and Blanchard, 1849
    ... perforated, is insuffi- cient to form a complete barrier between the two membranes. THE WRIST-JOINT. This articulation (radio-carpal) is ...
  3. ... health care workers often fail to observe appropriate barrier precautions when blood or mucous membrane contact might be anticipated. Observations made during a ...
  4. ... single factor of resistance is an intact epithelial barrier of the skin and mucous membranes. It would appear that infection requires a break ... Natural immunity is largely dependent upon intact epithelial barriers and the ... membranes, and the cutaneous glands greatly increases suscepti- bility ...
  5. NLM Digital Collections - Manual of radiological safety 
    Publication: Washington, D.C. : Bureau of Medicine and Surgery, Navy Department, 1948
    ... large quantities of gas and large areas of barrier or membrane material are required. This means a great deal ... the early stages, and large areas of porous membrane or bar- rier material. ... Obtaining suitable barrier material was one of the biggest problems. In ...
  6. ... D. THE HUMAN IMMUNE SYSTEM Nonspecific Immunity ! Physical Barriers Skin Mucous Membrane Respiratory, Gi tracts Acute Phase Reactants Complement Granulocytes ...
  7. NLM Digital Collections - On the diseases of infants and children 
    Publication: Philadelphia : Blanchard and Lea, 1856
    ... pia mater, or irregular unconnected shreds of cellular membrane. Barrier remarks that whenever a well-marked cyst exists, ... place in the following ways, according to M. Barrier. " 1. It commences in the mucous membrane which covers the follicles, and spreads in depth ...
  8. NLM Digital Collections - Diagnosis of chronic abscess of the brain 
    Publication: Philadelphia : Lea Brothers & Co., [1896?]
    ... defence, and in time circumscribe with a solid barrier (pseudo-membrane) the hostile element (pus) which tends to destroy ...
  9. ... showed that during a nerve action potential, the membrane barrier to ions breaks down and the membrane potential becomes reversed. Cole's invention of the voltage ...
  10. NLM Digital Collections - Penicillin therapy and control in 21 Army Group : published under the direction of the ... 
    Publication: [Germany] : Printed and bound by Printing & Stationery Service, British Army of the Rhine, May, 1945
    ... parenterally it has difficulty in passing the serous membrane barriers of the joints and peritoneal cavity, and consequently the concentrations ac hieved in the synovial and peritoneal fluids are ... and peritoneal membranes is unknown, but it is certainly untrue of ...
first · previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · next · last