Non-dispersive infra-red analysis of mixtures of water and heavy water

1962 ◽  
Vol 10 (2) ◽  
pp. 137-156 ◽  
Author(s):  
C. A. Bosselaar
Keyword(s):  
Heavy Water ◽  
Infra Red

The Infra-Red Spectrum of Heavy Water Vapor

1948 ◽  
Vol 73 (10) ◽  
pp. 1164-1173 ◽  
Author(s):  
Fred P. Dickey ◽  
Harald H. Nielsen
Keyword(s):  
Water Vapor ◽  
Heavy Water ◽  
Infra Red

scholarly journals The near infra-red absorption spectrum of heavy water

1937 ◽  
Vol 159 (898) ◽  
pp. 410-415 ◽  
Keyword(s):  
Absorption Spectrum ◽  
Absorption Spectroscopy ◽  
Heavy Water ◽  
Deuterium Oxide ◽  
Imperial College ◽  
Infra Red

The infra-red absorption spectrum of liquid deuterium oxide (“heavy water”) has been investigated by Ellis and Sorge (1934) and, in the region 2·5-9 μ , by Plyler and Williams (1936). In the course of some other investigations at the Imperial College the absorption spectrum of this substance was remeasured between 0·9 and 2·1 μ , but the results obtained did not fully confirm those of Ellis and Sorge. In view of the importance of heavy water as a solvent for absorption spectroscopy in the infra-red, it is necessary that its spectrum should be known as accurately as possible, and it therefore seems desirable to publish the new results for comparison with the earlier ones, and to reconsider the theoretical origin of the spectrum.

Electron Microscopy of Human Gallstones

1971 ◽  
Vol 29 ◽  
pp. 296-297
Author(s):  
C. Wolpers ◽  
R. Blaschke
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Bile Pigment ◽  
X Ray Diffraction ◽  
Triclinic Crystal System ◽  
X Ray ◽  
Follow Up Study ◽  
Infra Red ◽  
Main Components

Scanning microscopy was used to study the surface of human gallstones and the surface of fractures. The specimens were obtained by operation, washed with water, dried at room temperature and shadowcasted with carbon and aluminum. Most of the specimens belong to patients from a series of X-ray follow-up study, examined during the last twenty years. So it was possible to evaluate approximately the age of these gallstones and to get information on the intensity of growing and solving.Cholesterol, a group of bile pigment substances and different salts of calcium, are the main components of human gallstones. By X-ray diffraction technique, infra-red spectroscopy and by chemical analysis it was demonstrated that all three components can be found in any gallstone. In the presence of water cholesterol crystallizes in pane-like plates of the triclinic crystal system.

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