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Observation of electromagnetic shock waves from propagating surface-dipole distributions
(American Physical Society, 1989-06-19)
We have directly measured the time-dependent electromagnetic shock wave generated by an electric surface-dipole distribution propagating faster than the phase velocity in the underlying dielectric substrate. The results ...
Transmembrane pore size and role of cell swelling in cytotoxicity caused by Pasteurella haemolytica leukotoxin
(American Society for Microbiology, 1989-02)
Pasteurella haemolytica A1 leukotoxin causes rapid (5 to 15 min) leakage of intracellular K+ and cell swelling and slower (15 to 60 min), Ca2+-dependent formation of large plasma membrane defects (~100 nm) and leakage of ...
Observation of the formation of an optical intensity shock and wave breaking in the nonlinear propagation of pulses in optical fibers
(American Physical Society, 1989-01-30)
We have observed the formation of an optical intensity shock and the subsequent wave breaking in the nonlinear propagation of 1-psec pulses in an optical fiber. The wave breaking manifests itself as the appearance of ...
High-brightness terahertz beams characterized with an ultrafast detector
(AIP Publishing, 1989-07-24)
We have significantly improved the emission and detection of electromagnetic beams of single-cycle 0.5 THz pulses, through the use of new dipolar antenna structures. The frequency response was extended to well beyond the ...
Subpicosecond electrical pulse generation using photoconductive switches with long carrier lifetimes
(AIP Publishing, 1989-03-13)
Using a new mechanism of electrical pulse generation, we have generated 350 fs (full width at half maximum) electrical pulses on a coplanar transmission line, fabricated on an unimplanted silicon-on-sapphire substrate.
Comparison of the Pasteurella haemolytica A1 envelope proteins obtained by two cell disruption methods
(American Society for Microbiology, 1989-04)
The French pressure cell and sonication methods of bacterial cell disruption were compared for the evaluation of surface proteins from Pasteurella haemolytica Ai. Several protein bands were quantitatively different when ...
Pasteurella haemolytica antigens associated with resistance to pneumonic pasteurellosis
(American Society for Microbiology, 1989-03)
Antigens associated with whole Pasteurella haemolytica biotype A serotype 1, a capsular arbohydrateprotein extract of the organism, and P. haemolytica leukotoxin were separated by sodium dodecyl sulfatepolyacrylamide gel ...