Beryllium Oxide
Title | Beryllium Oxide PDF eBook |
Author | Remir Aleksandrovich Beli︠a︡ev |
Publisher | |
Pages | 276 |
Release | 1964 |
Genre | Beryllium |
ISBN |
Toxicological Studies on Beryllium Oxides and Beryllium-containing Exhaust Products
Title | Toxicological Studies on Beryllium Oxides and Beryllium-containing Exhaust Products PDF eBook |
Author | Howard C. Spencer |
Publisher | |
Pages | 268 |
Release | 1968 |
Genre | |
ISBN |
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).
Beryllium Oxide for Nuclear Propulsion Application
Title | Beryllium Oxide for Nuclear Propulsion Application PDF eBook |
Author | A. J. Rothman |
Publisher | |
Pages | 62 |
Release | 1963 |
Genre | Beryllium oxide |
ISBN |
Decrepitation of Beryllium Oxide at High Temperature
Title | Decrepitation of Beryllium Oxide at High Temperature PDF eBook |
Author | S. B. Austerman |
Publisher | |
Pages | 18 |
Release | 1960 |
Genre | Beryllium oxide |
ISBN |
Beryllium and Beryllium Oxide Production and Development
Title | Beryllium and Beryllium Oxide Production and Development PDF eBook |
Author | U.S. Atomic Energy Commission. New York Operations Office |
Publisher | |
Pages | 446 |
Release | 1950 |
Genre | Beryllium |
ISBN |
"Abstract. Presented herein are the latest production methods for producing beryllium and beryllium oxide and the report of methods of production still in the development stage." A collection of seven talks presented at a meeting.
Pure Beryllium Oxide as a Refractory
Title | Pure Beryllium Oxide as a Refractory PDF eBook |
Author | Frederick Harwood Norton |
Publisher | |
Pages | 26 |
Release | 1946 |
Genre | Beryllium oxide |
ISBN |
Beryllium Oxide Single Crystal Growth
Title | Beryllium Oxide Single Crystal Growth PDF eBook |
Author | S. B. Austerman |
Publisher | |
Pages | 46 |
Release | 1961 |
Genre | Beryllium oxide |
ISBN |