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Now showing items 31-40 of 233
Contributions of leaf rust resistance and awns to agronomic and grain quality performance in winter wheat
(Crop Science Society of America, 2003-09)
Wheat (Triticum aestivum L.) cultivars grown in the Great Plains usually bear awned spikes for their putative value to grain yield and quality. Awnletted cultivars are generally limited to forage-only systems. We hypothesized ...
Optimal stocking density for dual-purpose winter wheat production
(Cambridge University Press, 2003-04)
Dual-purpose winter wheat production is an important economic enterprise in the southern Great Plains of the United States. Because of the complex interactions involved in producing wheat grain and beef gain from a single ...
Electrical characterization of conducting polypyrrole by THz time-domain spectroscopy
(AIP Publishing, 2000-10-16)
Using an optoelectronic THz beam system for THz time-domain spectroscopy (THz TDS), we have measured the absorption and index of refraction of a conducting polypyrrole film from low frequencies to 2.5 THz. From these ...
Compactifying sufficiently regular covering spaces of compact 3-manifolds
(American Mathematical Society (AMS), 2000)
In this paper it is proven that if the group of covering translations of the covering space of a compact, connected, P²-irreducible 3-manifold corresponding to a non-trivial, finitely-generated subgroup of its fundamental ...
Characterization of the oxidative stress stimulon and PerR regulon of Campylobacter jejuni
(BioMed Central, 2009-10-18)
Background: During gut colonization, the enteric pathogen Campylobacter jejuni must surmount the toxic effects of reactive oxygen species produced by its own metabolism, the host immune system, and intestinal microflora. ...
Cost of forward contracting hard red winter wheat
(Cambridge University Press, 2000-04)
Two methods were used to estimate the cost of forward contracting hard red winter wheat. One hundred days before delivery, the estimated cost of forward contracting ranged from six cents/bu. to eight cents/bu. Thus, further ...
Transmission properties of terahertz pulses through an ultrathin subwavelength silicon hole array
(AIP Publishing, 2005-03-30)
We demonstrate extraordinary THz transmission of an array of subwavelength apertures patterned on ultrathin highly doped silicon by reactive ion etching. The zero-order transmission spectra exhibit well-defined maxima and ...
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 ...
Economic impacts of banning subtherapeutic use of antibiotics in swine production
(Cambridge University Press, 2002-12)
Public health officials and physicians are concerned about possible development of bacterial resistance and potential effects on human health that may be related to the use of antimicrobial agents in livestock feed. The ...
Laser-induced resonance shifts of single molecules self-coupled by a metallic surface
(American Physical Society, 2007-04-05)
The spectral properties of single molecules placed near a metallic surface are investigated at low temperatures. Because of the high quality factor of the optical resonance, a laser-induced shift of the molecular lines is ...