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Biodegradation of benzene by halophilic and halotolerant bacteria under aerobic condition
(American Society for Microbiology, 2004-02)
A highly enriched halophilic culture was established with benzene as the sole carbon source by using a brine soil obtained from an oil production facility in Oklahoma. The enrichment completely degraded benzene, toluene, ...
Sub- and superluminal propagation of intense pulses in media with saturated and reverse absorption
(American Physical Society, 2004-05-19)
We develop models for the propagation of intense pulses in solid state media which can have either saturated absorption or reverse absorption. We model subluminal propagation in ruby and superluminal propagation in alexandrite ...
Bacterial community structure and diversity in a century-old manure-treated agroecosystem
(American Society for Microbiology, 2004-10)
Changes in soil microbial community structure and diversity may reflect environmental impact. We examined 16S rRNA gene fingerprints of bacterial communities in six agroecosystems by PCR amplification and denaturing gradient ...
Direct optoelectronic generation and detection of sub-ps-electrical pulses on sub-mm-coaxial transmission lines
(AIP Publishing, 2004-12-20)
We report efficient direct optoelectronic generation of sub-ps-THz pulses on 50 Ohm coaxial transmission lines with a 330 micro-m diameter solid copper outer tube filled with Teflon containing the 80 micro-m diameter inner ...
Effects of dietary energy and starch concentrations for newly received feedlot calves: I. Growth performance and health
(American Society of Animal Science, 2004)
Crossbred calves (n = 572; initial BW = 186 +/= 27 kg) purchased from northern Texas, Arkansas, and southeast Oklahoma auction markets were delivered to the Willard Sparks Beef Research Center, Stillwater, OK, and used to ...
Measurement and noise characterization of optically induced index changes using THz interferometry
(AIP Publishing, 2004-05-24)
A Michelson interferometer designed for broadband single-cycle THz pulses is used to characterize optically induced index changes in semiconductors which result in submicron changes in optical path length. The interferometric ...
Parallel plate THz transmitter
(AIP Publishing, 2004-02-02)
A THz transmitter that directly excites the guided wave modes of a dielectric filled parallel plate waveguide is demonstrated. When coupled to free space, the transmitter yields a large peak time-domain THz signal. The ...
Nonclassical imaging for a quantum search of trapped ions
(American Physical Society, 2004-12-27)
We discuss a simple search problem which can be pursued with different methods, either on a classical or on a quantum basis. The system is represented by a chain of trapped ions. The ion to be searched is a member of that ...
Portable near-infrared diffusive light imager for breast cancer detection
(SPIE, the international society for optics and photonics, 2004-02-03)
We present a frequency-domain near-infrared optical tomography system designed for breast cancer detection, in conjunction, with conventional ultrasound. It features fast optical switching, threewavelength excitations, and ...
Observation of a new type of THz resonance of surface plasmons propagating on metal-film hole arrays
(American Physical Society, 2004-11-04)
Highly conducting metal-film subwavelength hole arrays, lithographically fabricated on high-resistivity silicon wafers in optical contact with thick silicon plates, have been characterized by terahertz time-domain spectroscopy ...