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Now showing items 111-120 of 233
Avian response to landscape change in fragmented southern Great Plains grasslands
(Ecological Society of America, 2001)
We examined the dynamics of avian communities associated with fragmented grasslands in Oklahoma, USA, using long-term (1965-1995) raw (stop-level) data from the Breeding Bird Survey (BBS). Aerial photography was used to ...
Electrical and optical characterization of conducting poly-3-methylthiophene film by THz time-domain spectroscopy
(AIP Publishing, 2002-12-17)
Using THz time-domain spectroscopy (THz-TDS), we have measured the absorption and dispersion of 7.5/(Ohm-cm) conducting poly-3-methylthiophene film from low frequencies up to 4 THz. From these measurements the complex ...
Determining returns to storage: Does data aggregation matter?
(Cambridge University Press, 2007-12)
Aggregate data are commonly used to determine returns to storage. However, recent studies have shown that aggregating data may lead to underestimated returns. This article compares aggregate and elevator data from Oklahoma ...
Microplate fluorescence assay for measurement of the ability of strains of Listeria monocytogenes from meat and meat-processing plants to adhere to abiotic surfaces
(American Society for Microbiology, 2007-08)
Listeria monocytogenes is a significant food-borne pathogen that is capable of adhering to and producing biofilms on processing equipment, making it difficult to eliminate from meat-processing environments and allowing ...
Novel and nodulation-regulated microRNAs in soybean roots
(BioMed Central, 2008-04-10)
Background: Small RNAs regulate a number of developmental processes in plants and animals. However, the role of small RNAs in legume-rhizobial symbiosis is largely unexplored. Symbiosis between legumes (e.g. soybean) and ...
Potential use of spectral reflectance indices as a selection tool for grain yield in winter wheat under Great Plains conditions
(Crop Science Society of America, 2007-07-30)
Selection criteria that would facilitate increased genetic gain for grain yield would be considered advantageous in plant breeding programs. We evaluated the potential of spectral reflectance indices (SRI) for assessing ...
Price survey comparison of alcoholic beverages with the five basic food groups in Paraiba, Brazil
(Science Publications, 2006)
The study of alcohol abuse is relatively new in Brazil. Government estimates suggest that 11.2% of the Brazilian population is alcohol dependent. Problems associated with alcohol dependence include domestic violence, ...
Allopatric speciation in ticks: Genetic and reproductive divergence between geographic strains of Rhipicephalus (Boophilus) microplus
(BioMed Central, 2009-02-25)
Background: The cattle tick, Rhipicephalus (Boophilus) microplus, economically impact cattle industry in tropical and subtropical regions of the world. The morphological and genetic differences among R. microplus strains ...
Sodium silver tricobalt bis(diphosphate) and sodium silver copper(II) diphosphate
(International Union of Crystallography, 2002-06-12)
The crystal structures of two new diphosphates, sodium silver tricobalt bis(diphosphate), (Na1.42Ag0.58)Co3(P2O7)2, and sodium silver copper(II) diphosphate, (Na1.12Ag0.88)CuP2O7, provide examples of the effect of mixing ...
Quantum interferences in cooperative Dicke emission from spatial variation of the laser phase
(American Physical Society, 2008-10-06)
We report generation of a new quantum interference effect in spontaneous emission from a resonantly driven system of two identical two-level atoms due to the spatial variation of the laser phase at the positions of the ...