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Now showing items 11-20 of 35
Highly sensitive terahertz measurement of layer thickness using a two-cylinder waveguide sensor
(AIP Publishing, 2010-08-17)
We report on the layer thickness determination on dielectrically coated metal cylinders using terahertz (THz) time-domain spectroscopy. A considerable sensitivity increase of up to a factor of 150 is obtained for layers ...
Cloning, expression, purification, crystallization and preliminary X-ray diffraction studies of the catalytic domain of a hyperthermostable endo-1,4-B-D-mannanase from Thermotoga petrophila RKU-1
(International Union of Crystallography, 2010)
Endo-1,4-[beta]-D-mannanases play key roles in seed germination and fruit ripening and have recently received much attention owing to their potential applications in the food, detergent and kraft pulp industries. In order ...
Construction and validation of geometry attitude scales
(John Wiley and Sons, 2010-03-17)
The purpose of this study was to develop and establish the validity and reliability of an instrument to measure students' attitudes toward geometry. Participants consisted of 264 undergraduate students from two universities, ...
Strong influence of packing density in terahertz metamaterials
(AIP Publishing, 2010-12-16)
We investigate the response of a terahertz metamaterial depending on the unit cell density. The fundamental inductive capacitive (LC) resonance has its highest quality (Q) factor for a critical period Pc=lambda/n, with ...
Assessing constancy of substitution rates in viruses over evolutionary time
(BioMed Central, 2010-10-07)
Background: Phylogenetic analyses reveal probable patterns of divergence of present day organisms from common ancestors. The points of divergence of lineages can be dated if a corresponding historical or fossil record ...
Combined effects of sidestream smoke extracts and glycated serum albumin on endothelial cells and platelets
(BioMed Central, 2010-06-07)
Background: The purpose of this study was to test the hypothesis that sidestream tobacco smoke extracts would inhibit the culture of endothelial cells and enhance platelet aggregation under diabetic vascular conditions. ...
Adiabatic compression of terahertz waves using metal flares
(AIP Publishing, 2010-05-14)
We report on the adiabatic free-space coupling of broadband terahertz (THz) radiation through a subwavelength gap using metal flares. Amplitude coupling ratios better than 30% are obtained by optimizing the curvature. This ...
Racial microaggressions experienced by Native Americans
(Oklahoma State University, 2010)
Efficacy of a doxycycline treatment regimen initiated during three different phases of experimental ehrlichiosis
(American Society for Microbiology, 2010-12)
Doxycycline is the treatment of choice for canine monocytic ehrlichiosis (CME), a well-characterized disease and valuable model for tick-borne zoonoses. Conflicting reports of clearance of Ehrlichia canis after treatment ...
Cryogenic temperatures as a path toward high-Q terahertz metamaterials
(AIP Publishing, 2010-02-19)
Optical properties of planar thin film metamaterials were measured at room and liquid nitrogen temperatures using terahertz time-domain spectroscopy. The operation of metamaterials at cryogenic temperatures is anticipated ...