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Processing method for superconducting ceramics
A process for preparing a superconducting ceramic and particularly YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}, where {delta} is in the order of about 0.1--0.4, is carried out using a polymeric binder which decomposes below its ignition point to reduce carbon residue between the grains of the sintered ceramic and a nonhydroxylic organic solvent to limit the problems with water or certain alcohols on the ceramic composition.
Date:
May 7, 1990
Creator:
Bloom, I. D.; Poeppel, R. B. & Flandermeyer, B. K.
System:
The UNT Digital Library
A method of genetically engineering acidophilic, heterotrophic, bacteria by electroporation and conjugation
A method of genetically manipulating an acidophilic bacteria is provided by two different procedures. Using electroporation, chimeric and broad-host range plasmids are introduced into Acidiphilium. Conjugation is also employed to introduce broad-host range plasmids into Acidiphilium at neutral pH.
Date:
August 7, 1990
Creator:
Roberto, F. F.; Glenn, A. W. & Ward, T. E.
System:
The UNT Digital Library