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Now showing items 161-170 of 233
Underlying terahertz vibrational spectrum of explosives solids
(AIP Publishing, 2008-07-08)
Using waveguide terahertz time-domain spectroscopy, we demonstrate the measurement of the underlying terahertz vibrational spectrum of the explosive solids hexahydro-1,3,5-trinitro-1,3,5-triazine, and 2,4,6-trinitrotoluene. ...
Measured long-ranged attractive interaction between charged polystyrene latex spheres at a water-air interface
(American Physical Society, 2006-08-15)
We report results of a systematic experimental study of interactions between charged polystyrene (PS) latex spheres at a water-air interface. Optical observations of stable bonded particle clusters and formation of circular ...
Subluminal to superluminal propagation in a left-handed medium
(American Physical Society, 2004-03-22)
In this paper we report large group delays in the propagation of narrow-band pulses through a dispersive medium with both dielectric function and magnetic permeability negative. We show how the numerical results can be ...
Value of increasing kernel uniformity
(Western Agricultural Economics Association, 2002-12)
Kernel uniformity is an important quality attribute that can now be measured at low cost. This study analyzes the profitability of sorting to increase wheat kernel uniformity. Nonlinear programming is used to sort grain ...
Mesoscopic superposition of states with sub-Planck structures in phase space
(American Physical Society, 2004-11-11)
We propose the cavity quantum electrodynamics method, using dispersive interaction between atoms and a high-quality cavity to realize the mesoscopic superposition of coherent states that would exhibit sub-Planck structures ...
AlgT gene of Pseudomonas syringae pv. glycinea and new insights into the transcriptional organization of the algT-muc gene cluster
(American Society for Microbiology, 2006-12)
The phytopathogenic bacterium Pseudomonas syringae pv. glycinea infects soybean plants and causes bacterial blight. In addition to P. syringae, the human pathogen Pseudomonas aeruginosa and the soil bacterium Azotobacter ...
Effect of essential oil from citronella and alfazema on fennel aphids Hyadaphis foeniculi Passerini (Hemiptera: Aphididae) and its predator Cycloneda sanguinea L. (Coleoptera: Coccinelidae)
(Science Publications, 2006)
The essential oil of plants is used as an alternative to pesticides for the control of aphids. We study the effect of the essential oils of citronella and alfazema on aphid populations in the laboratory and in the field. ...
Quantification of recA gene expression as an indicator of repair potential in marine bacterioplankton communities of Antarctica
(Inter Research, 2001-03-28)
Marine bacteria in surface waters must cope daily with the damaging effects of exposure to solar radiation (containing both UV-A and UV-B wavelengths), which produces lesions in their DNA. As the stratospheric ozone layer ...
Quality sample collection, handling, and preservation for an effective microbial forensics program
(American Society for Microbiology, 2006-10)