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AlgT (sigma^22) controls alginate production and tolerance to environmental stress in Pseudomonas syringae
(American Society for Microbiology, 1999-12)
Pseudomonas aeruginosa and the phytopathogen P. syringae produce the exopolysaccharide alginate, which is a copolymer of D-mannuronic and L-guluronic acids. One of the key regulatory genes controlling alginate biosynthesis ...
Experimental time-domain study of THz signals from impulse excitation of a horizontal surface dipole
(AIP Publishing, 1999-03-22)
Using optoelectronic techniques with sub-ps resolution, we have characterized the electric-field time-domain response from an impulsively excited, micron-sized dipole antenna on a dielectric surface. When detected by an ...
Measurements of the THz absorption and dispersion of ZnTe and their relevance to the electro-optic detection of THz radiation
(AIP Publishing, 1999-06-07)
Via THz time-domain spectroscopy, we have measured the absorption and index of refraction of single-crystal (110) ZnTe from 0.3 to 4.5 THz. We find that the absorption is dominated by two lower-frequency phonon lines at ...
Pseudomonas syringae phytotoxins: Mode of action, regulation, and biosynthesis by peptide and polyketide synthetases
(American Society for Microbiology, 1999-06)
Survey of alkyl methacrylate latexes as aqueous catalytic media
(American Chemical Society, 1999-11-02)
Cationic polymer latexes serve as catalytic media for the hydrolysis of p-nitrophenyl esters by providing a more lipophilic environment into which these compounds can partition from the aqueous phase. The latex quaternary ...
Determination of the Wigner function from photon statistics
(De Gruyter Open, 1999-08)
We present an experimental realisation of the direct scheme for measuring the Wigner function of a single quantized light mode. In this method, the Wigner function is determined as the expectation value of the photon number ...
Regulation of alginate biosynthesis in Pseudomonas syringae pv. Syringae
(American Society for Microbiology, 1999-06)
Both Pseudomonas aeruginosa and the phytopathogen P. syringae produce the exopolysaccharide alginate. However, the environmental signals that trigger alginate gene expression in P. syringae are different from those in P. ...
Study of the response of a biofilm bacterial community to UV radiation
(American Society for Microbiology, 1999-05)
We have developed a bioluminescent whole-cell biosensor that can be incorporated into biofilm ecosystems. RM4440 is a Pseudomonas aeruginosa FRD1 derivative that carries a plasmid-based recA-luxCDABE fusion. We immobilized ...