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Now showing items 181-190 of 233
Covariation for microsatellite marker alleles associated with Rht8 and coleoptile length in winter wheat
(Crop Science Society of America, 2004-07)
Wheat (Triticum aestivum L.) cultivars with greater coleoptile elongation are preferred in low-precipitation dryland regions and in early-planted management systems of the Great Plains, but the presence of GA3 (gibberell ...
Functional cloning of Bacillus anthracis dihydrofolate reductase and confirmation of natural resistance to trimethoprim
(American Society for Microbiology, 2004-12)
Bacillus anthracis is reported to be naturally resistant to trimethoprim (TMP), a drug that inhibits dihydrofolate reductase (DHFR), a key enzyme in the folate pathway. A microdilution broth assay established that the MIC ...
Quantum imaging with incoherent photons
(American Physical Society, 2007-09-28)
We propose a technique to obtain subwavelength resolution in quantum imaging with potentially 100% contrast using incoherent light. Our method requires neither path-entangled number states nor multiphoton absorption. The ...
Realization of quantum-mechanical weak values of observables using entangled photons
(American Physical Society, 2007-03-12)
We present a scheme for realization of quantum-mechanical weak values of observables using entangled photons produced in parametric down-conversion. We consider the case when the signal and idler modes are respectively in ...
Characterization of Cfa1, a monofunctional acyl carrier protein involved in the biosynthesis of the phytotoxin coronatine
(American Society for Microbiology, 2004-04)
Cfa1 was overproduced in Escherichia coli and Pseudomonas syringae, and the degree of 4'-phosphopantetheinylation was determined. The malonyl-coenzyme A:acyl carrier protein transacylase (FabD) of P. syringae was overproduced ...
Variation in tortoise life history: Demography of Gopherus berlandieri
(Ecological Society of America, 2000-05-01)
Turtles provide excellent models for studies of life history strategies, but terrestrial species are underrepresented in these analyses. We present a life table and demographic parameters of an inland population of Gopherus ...
Moment inequalities for equilibrium measures in the plane
(2007-02-15)
The equilibrium measure of a compact plane set gives the steady state distribution of charges on the conductor. We show that certain moments of this equilibrium measure, when taken about the electrostatic centroid and ...
Superluminal propagation via coherent manipulation of the Raman gain process
(American Physical Society, 2004-08-12)
We present a method of manipulating the Raman process by using a coherent control field which leads to splitting of the Raman gain peak into a doublet and anomalous dispersion in the region between the gain peaks. We show ...
Properties of surface waves determined via bistatic terahertz impulse ranging
(AIP Publishing, 2001-02-19)
A bistatic terahertz impulse ranging system has permitted the full isolation and direct measurements of the surface wave loss and dispersion for terahertz frequencies on a dielectric cylinder. This system permits ranging ...
THz transverse electromagnetic mode two-dimensional interconnect layer incorporating quasi-optics
(AIP Publishing, 2003-11-03)
We report the demonstration of a planar THz interconnect layer capable of transmitting subpicosecond pulses in the transverse electromagnetic (TEM) mode over arbitrarily long paths with low absorption and no observable ...