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Showing 1 to 20 of 91 for “"QH"”.
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Finite dimensional approximations and deformations of group C*-algebras
… other approximation properties.</p> <p>Property (QH) is a related but stronger approximation property with deep connections to E-Theory and KK-Theory. In the case of groups, Property (QH) represents the property that the group not only has structure capturing matricial models but also that these …
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Model calculations of current and density distributions in dissipative Hall bars
… discrepancies such as the dependence of the QH plateau width on the mobility and to understand the crossing values of the high and low temperature Hall resistances. An interesting outcome of this model is that, it predicts different crossing values depending on the sample width and mobility. …
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An Assessment of Radiative, Energy and Carbon Dioxide Fluxes over Three Urban Locations in Dublin
… seasonal trends of the turbulent sensible heat (QH), latent heat (QE) and carbon dioxide (FC) fluxes. Net radiation (Q*) was 7.5 and 10% greater in summer and winter at the suburban location when compared to an urban location. Q* was preferentially channelled into the QH in summer and the QE in …
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Phonon dispersion curves and atomic mean square displacement for several fcc and bcc materials
… have been calclllated from the quasiharmonic (QH) theory, the lowest order (A2 ) perturbation theory (PT) and a recently proposed Green's function (GF) method by Shukla and Hiibschle. The latter method includes certain anharmonic effects to all orders of anharmonicity. In order to determine the …
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Charge, spin and pseudospin in graphene
… particular emphasis on the quantum Hall effect (QHE) regime, where this material exhibits most interesting behavior. We shall start with analyzing general properties of the two-terminal conductance for graphene mono- and bilayer samples. Using conformal invariance and the theory of conformal …
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The interactions of cytochrome bo3 from Escherichia coli with its substrates - ubiquinone and oxygen
… with the quinone at the high affinity QH site are well defined through numerous mutagenesis and spectroscopic studies, but the identification of the low affinity QL site has remained difficult. To clarify whether the low affinity QL exists, we used structural models to guide us. First …
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Structural and Functional Studies on Cytochrome BO3 Ubiquinol Oxidase From Escherichia Coli and the Characterization of Its Quinone Binding Sites
… enzyme at the high affinity quinone binding (QH) site, and is able to transiently form a one-electron reduced semiquinone radical during the catalytic cycle. The semiquinone is highly stabilized at the QH site, and it was postulated from the crystal structure that ArgI71, AspI75, HisI98 and …
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Superconducting Electron Transport in Graphene-Based Josephson Junctions
… graphene: diffusive, ballistic and quantum Hall (QH). In a diffusive device, the mean free path (scattering length) ξ_S of an electron is shorter than the length between the SC contacts, L. In the ballistic limit, the scattering length ξ_S exceeds L. These two regimes are explored without external …
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Electron gating and mechanism of proton exit in quinol oxidation in cyt bc1 complex from R. sphaeroides
… facilitating electron transfer from semiquinone (QH∙) to heme bL (low potential b-type heme of cyt b to generate the product quinone (Q); and (ii) in catalyzing both the deprotonation of QH∙ to semiquinone anion, Q∙ ‾, and exit of the proton via a water channel to the exterior. It has been …
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EPR and solid-state NMR studies on the mechanism of cytochrome bo3 ubiquinol oxidase from escherichia coli
… at the high affinity binding site known as the QH-site, from which electrons are moved one at a time sequentially to the low-spin heme b and the CuB-heme o3 catalytic site. In this study, E. coli C43(DE3) auxotroph strains were constructed with highly efficient λ-Red recombination system. …
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Quantum Hall transport in graphene and its bilayer
… with a particular emphasis on the quantum Hall (QH) effect at the charge neutrality point, where both systems exhibit broken symmetry of the degenerate Landau level at zero energy. We also present data on quantum Hall edge transport across the interface of a graphene monolayer and bilayer …
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Graphene NanoElectroMechanical Resonators and Oscillators
… applied magnetic field, {i.e.} in Quantum Hall (QH) regime. The couplings between mechanical motion and electronic band structure turned out to be a direct probe for thermodynamic quantities, {i.e.}, chemical potential and compressibility. For a clean graphene resonators, with quality factors of …
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Modélisation de l’émission micro-onde hivernale en forêt boréale canadienne
… paramètres définissant la réflectivité du sol (QH) en forêt boréale ont aussi été inversées. Finalement, les simulations de T [indice inférieur] B issues du couplage du MTR (DMRT-ML, modèle γ-ω, et modèle atmosphérique) avec CLASS (dont les SSA simulées) ont été comparées avec les données AMSR-E …
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Characterization of main ion properties for the optimization of future fusion power plants
… (I-mode) and quiescent high confinement mode (QH-mode), have been documented. It has been found that the impurity ion temperature does not always give a good description of the main ion properties, and the thermal equilibration between main and impurity ions is a complex function of heating …
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Precision Nutrition Tools to Support Extensive Forage-Based Livestock Systems
… (BCS) in mature horses of the Quarter Horse (QH) and Thoroughbred (TB) breed types, as well as in multiparous gestating beef cows. We explored this objective by capturing thermal images on one or both sides of each animal's body while five to eight trained scorers assigned BCS. Several …
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The effects of intensive agriculture on the breeding of the lapwing (Vanellus vanellus L.).
Changes in modem agriculture have been shown to have detrimental affects on those bird species whose populations mainly inhabit the wider countryside. Recently extensive changes to the farmed landscape have occurred through implementation of European agricultural policy much of which has been …
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A Phylogenetic History of the Tenerife Skink Chalcides viridanus: A multi-locus Coalescent Approach
Previous studies on the Tenerife skink Chalcides viridanus found clear links between observed within-island cladogenesis and the geological history of the island. Since these studies there have been many advances in conceptual, numerical and methodological approaches in phylogenetic analyses. This …
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Duplex camera portable motion capture system for single athlete’s performance analysis
In recent years, introduction of depth camera in motion capture have caught a massive attention by both researchers and biomechanists. Therefore, high-performance sports certainly require motion capture technology to compete with other competitors. Thus, a study involving quantitative analysis is …
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Insecticidal and repellant activities of selected botanical extracts against rice weevil (Sitophilus oryzae L.)
Stored rice is infected primarily by adult rice weevil (Sitophilus oryzae L.). Botanical pesticides could be alternatives to synthetic insecticides due to their effectiveness and lower toxicity. This study investigated repellence activity, insecticidal activity and phytochemical composition of …
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