The reaction between cellulose and heavy water. Part 1. A qualitative study by infra-red spectroscopy

1956 ◽  
Vol 52 ◽  
pp. 481 ◽  
Author(s):  
J. Mann ◽  
H. J. Marrinan
Keyword(s):  
Qualitative Study ◽  
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.

Qualitative study on “hydropic degeneration” of The hepatocytes in viral hepatitis

1990 ◽  
Vol 48 (3) ◽  
pp. 568-569
Author(s):  
Le Meizhao ◽  
Ye Ming ◽  
Song Xiaoming ◽  
Xu Jiazhang
Keyword(s):  
Qualitative Study ◽  
Viral Hepatitis ◽  
Chronic Active Hepatitis ◽  
Microscopic Observation ◽  
Hydropic Degeneration ◽  
Light Microscopic Observation ◽  
Biopsy Specimens ◽  
Endoplasm Reticulum ◽  
Mixed Fluid ◽  
Peripheral Cytoplasm

“Hydropic degeneration” of the hepatocytes are often found in biopsy of the liver of some kinds of viral hepatitis. Light microscopic observation, compareted with the normal hepatocytes, they are enlarged, sometimes to a marked degree when the term “balloning” degeneration is used. Their cytoplasm rarefied, and show some clearness in the peripheral cytoplasm, so, it causes a hydropic appearance, the cytoplasm around the nuclei is granulated. Up to the present, many studies belive that main ultrastructural chenges of hydropic degeneration of the hepatocytes are results of the RER cristae dilatation with degranulation and disappearance of glycogen granules.The specimens of this study are fixed with the mixed fluid of the osmium acidpotassium of ferricyanide, Epon-812 embed. We have observed 21 cases of biopsy specimens with chronic severe hepatitis and severe chronic active hepatitis, and found that the clear fields in the cytoplasm actually are a accumulating place of massive glycogen. The granules around the nuclei are converging mitochondria, endoplasm reticulum and other organelles.

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