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Languages : en
Pages :
Book Description
Studies of the Properties of Beryllium Oxide Before and After Irradiation
Author:
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Category :
Languages : en
Pages :
Book Description
Publisher:
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Category :
Languages : en
Pages :
Book Description
Physical Property Changes in Beryllium Oxide Due to Reactor Irradiation
Author: F.J.P. Clarke
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Category :
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
The Effect of Reactor Irradiation on the Physical Properties of Beryllium Oxide
Author: J. R. Gilbreath
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Category : Beryllium oxide
Languages : en
Pages : 20
Book Description
Publisher:
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Category : Beryllium oxide
Languages : en
Pages : 20
Book Description
Toxicological Studies on Beryllium Oxides and Beryllium-containing Exhaust Products
Author: Howard C. Spencer
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ISBN:
Category :
Languages : en
Pages : 268
Book Description
Results of long-term studies on rats and rabbits, injected intratracheally with well-characterized key samples of beryllium oxide prepared by calcining beryllium hydroxide for 10 hours at 500, 1100 and 1600 C, respectively, show clearly that there is a definite gradation in biological response depending upon the oxide administered. Thus, the oxide calcined at 500 C was highly active as judged by histopathological examination of the lungs, incidence of tumors, and translocation of beryllium from the lungs to other tissues. In contrast, the oxide calcined at 1600 C showed only minimal effects. Dose-response studies were carried out, using carefully prepared subsamples of 'respirable particle size' (1 to 5 microns) of the three key oxides; results showed a definite gradation in response which diminishes with decreasing dosages of the administered oxide. Investigations on motor exhaust products show that some samples have chemical, physical, and toxicological properties similar to the beryllium oxide calcined at 1600 C. On the other hand, other samples are heterogeneous, contain considerable quantities of water-soluble beryllium, and vary in toxicity. The mechanism of toxic action of beryllium oxide was investigated through study of chemical and physical properties, solubility and adsorption studies, serum electrophoretic analyses, and immunological experiments. Suggestions are made for further studies. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 268
Book Description
Results of long-term studies on rats and rabbits, injected intratracheally with well-characterized key samples of beryllium oxide prepared by calcining beryllium hydroxide for 10 hours at 500, 1100 and 1600 C, respectively, show clearly that there is a definite gradation in biological response depending upon the oxide administered. Thus, the oxide calcined at 500 C was highly active as judged by histopathological examination of the lungs, incidence of tumors, and translocation of beryllium from the lungs to other tissues. In contrast, the oxide calcined at 1600 C showed only minimal effects. Dose-response studies were carried out, using carefully prepared subsamples of 'respirable particle size' (1 to 5 microns) of the three key oxides; results showed a definite gradation in response which diminishes with decreasing dosages of the administered oxide. Investigations on motor exhaust products show that some samples have chemical, physical, and toxicological properties similar to the beryllium oxide calcined at 1600 C. On the other hand, other samples are heterogeneous, contain considerable quantities of water-soluble beryllium, and vary in toxicity. The mechanism of toxic action of beryllium oxide was investigated through study of chemical and physical properties, solubility and adsorption studies, serum electrophoretic analyses, and immunological experiments. Suggestions are made for further studies. (Author).
Irradiation of Sintered Beryllium Oxide to High Fast-Neutron Doses at 110, 650, and 1100 Deg. C
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Category :
Languages : en
Pages : 29
Book Description
Publisher:
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Category :
Languages : en
Pages : 29
Book Description
Beryllium Oxide for Nuclear Propulsion Application
Author: A. J. Rothman
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Category : Beryllium oxide
Languages : en
Pages : 62
Book Description
Publisher:
ISBN:
Category : Beryllium oxide
Languages : en
Pages : 62
Book Description
Information Circular
Author:
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Category : Mine safety
Languages : en
Pages : 1036
Book Description
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Category : Mine safety
Languages : en
Pages : 1036
Book Description
Summary of Radiation Effects on Thermionic Insulator Materials
Author: John T. Mayer
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Category : Dielectrics
Languages : en
Pages : 44
Book Description
Publisher:
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Category : Dielectrics
Languages : en
Pages : 44
Book Description
Helium
Author: Philip Cochran Tully
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Category : Alpha rays
Languages : en
Pages : 992
Book Description
Publisher:
ISBN:
Category : Alpha rays
Languages : en
Pages : 992
Book Description
Beryllium Oxide
Author: Robert Smith
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ISBN:
Category : Beryllium
Languages : en
Pages : 518
Book Description
Publisher:
ISBN:
Category : Beryllium
Languages : en
Pages : 518
Book Description