Results 171 to 180 of about 119,887 (207)

Plutonium 238 pacemaker failure secondary to lead fracture

Heart Rhythm, 2011
First implanted in France in 1970, the plutonium-powered pulse generator was a solution to the need for a longlived power source for implantable pacemakers. The first pacemakers were powered by a chemical (mercury–zinc) battery that lasted approximately 18 months, leading to the need for frequent replacement.
Lynn N, Moran, Martin E, Matsumura, James J, Bradbury, Matthew W, Martinez   +3 more
openaire   +2 more sources

Anlysis capabilities for plutonium-238 programs

AIP Conference Proceedings, 2000
In this presentation, an overview of analysis capabilities that support 238Pu programs will be discussed. These capabilities include neutron emission rate and calorimetric measurements, metallography/ceramography, ultrasonic examination, particle size determination, and chemical analyses.
openaire   +1 more source

Plutonium 238 facilities at Los Alamos

AIP Conference Proceedings, 1991
Plutonium 238 operations at Los Alamos are performed at the Plutonium Facility (TA‐55), the Chemistry and Metallurgy Research (CMR) Building, and the Radioisotope Fuels Impact Test Facility. The plutonium 238 facilities at Los Alamos support a wide variety of heat source activities including development of new fuel forms and containment materials ...
openaire   +1 more source

Un stimulateur cardiaque isotopique au plutonium 238

Revue Générale Nucléaire, 1975
C'est le 27 avril 1970, a l'Hopital Broussais, a Paris, qu'a eu lieu la premiere implantation mondiale d'un stimulateur cardiaque alimente par une batterie isotopique au plutonium 238. A l'heure actuelle, on compte un peu plus de 1 000 implantations dans le monde, le modele de stimulateur le plus repandu etant celui mis au point par la firme Medtronic,
Jean Lefevre, Michel Allais, René Berger, René Boucher, Paul Laurens   +4 more
openaire   +1 more source

Separation of Molybdenum from Plutonium-238 Dioxide

Nuclear Technology, 1973
Two methods by which molybdenum metal coatings may be removed from plutonium dioxide shards are: (a) fusion of the coated shards in a mixture of potassium nitrate and potassium hydroxide, cooling t...
W. A. Zanotelli, G. L. Silver, W. C. Bowling, S. B. Wells   +3 more
openaire   +1 more source

[Lung histopathology during plutonium-238 incorporation].

Radiobiologiia, 1989
In experiments with albino mongrel female rats a study was made of the response of the lungs to a single intratracheal injection of nitrate of 238Pu (0.4-740 kBq/kg). The nature of the inflammatory disease, the lymphoid tissue condition, pneumosclerosis occurrence, and the frequency and spectrum of lung tumors were shown to be a function of dose of the
E S, Zhorova, G A, Zalikin, P G, Nisimov
openaire   +1 more source

Chemical processes for recovery and purification of high-purity uranium-234 from aged plutonium-238

Journal of Radioanalytical and Nuclear Chemistry, 2021
M. Du, T. Hylton, S. Robinson
semanticscholar   +1 more source

Plutonium Denaturing by²³⁸Pu

Nuclear Science and Engineering, 2007
This paper analyzes whether reactor plutonium after denaturing by increasing its isotopic content of 238Pu to 6 to 8% can be regarded as proliferation resistant.
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Controlled-potential coulometric determination of plutonium-238 in plutonium-238 dioxide fuels

Analytical Chemistry, 1973
C. S. MacDougall, G. R. Waterbury
openaire   +1 more source

Clinical Experience with Nuclear-Powered Pacemakers (Plutonium-238)

1975
The average functional lifetime of conventional pacemakers has been increased from two to four years by improvement of the chemical batteries. Further improvements in longevity have been made possible by the use of nuclear energy (4,6,7,14,15,16,23,24,25,26,27,28,34–37,43).
J. Chr. Reidemeister, H. D. Schulte, W. Bircks   +2 more
openaire   +1 more source