Field Tests with New Materials against Cotton Insects at Tallulah, Louisiana During 19551

1956 ◽  
Vol 49 (5) ◽  
pp. 712-713 ◽  
Author(s):  
T. R. Pfrimmer ◽  
R. C. Gaines
Keyword(s):  
Field Tests ◽  
New Materials ◽  
Cotton Insects

Field Tests with Insecticides against Cotton Insects at Tallulah, La., in 19541

1956 ◽  
Vol 49 (1) ◽  
pp. 72-74
Author(s):  
T. R. Pfrimmer ◽  
R. C. Gaines
Keyword(s):  
Field Tests ◽  
Cotton Insects

A new type of defect structure in 124-superconducting oxide revealed by HREM

1991 ◽  
Vol 49 ◽  
pp. 1092-1093
Author(s):  
R. Sharma ◽  
B.L. Ramakrishna ◽  
N.N. Thadhani ◽  
D. Hianes ◽  
Z. Iqbal
Keyword(s):  
Shock Wave ◽  
Defect Structure ◽  
Neutron Radiation ◽  
Weak Links ◽  
Defect Structures ◽  
New Materials ◽  
New Type ◽  
Current Densities ◽  
Processing Techniques ◽  
Microstructural Studies

After materials with superconducting temperatures higher than liquid nitrogen have been prepared, more emphasis has been on increasing the current densities (Jc) of high Tc superconductors than finding new materials with higher transition temperatures. Different processing techniques i.e thin films, shock wave processing, neutron radiation etc. have been applied in order to increase Jc. Microstructural studies of compounds thus prepared have shown either a decrease in gram boundaries that act as weak-links or increase in defect structure that act as flux-pinning centers. We have studied shock wave synthesized Tl-Ba-Cu-O and shock wave processed Y-123 superconductors with somewhat different properties compared to those prepared by solid-state reaction. Here we report the defect structures observed in the shock-processed Y-124 superconductors.

Discussion on “New materials and processes in the field of engineering” at the Preston Section of the Institution

1936 ◽  
Vol 15 (12) ◽  
pp. 686
Author(s):  
Hodgson ◽  
Johnson ◽  
Skipper ◽  
Wilcock ◽  
Bailey ◽  
...  
Keyword(s):  
New Materials
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