نتایج جستجو برای: bao
تعداد نتایج: 2941 فیلتر نتایج به سال:
BACKGROUND Despite recent advances in acute stroke treatment, basilar artery occlusion (BAO) is associated with a death or disability rate of close to 70%. Randomised trials have shown the safety and efficacy of intravenous thrombolysis (IVT) given within 4.5 h and have shown promising results of intra-arterial thrombolysis given within 6 h of symptom onset of acute ischaemic stroke, but these ...
The lack of established standards to describe and annotate biological assays and screening outcomes in the domain of drug and chemical probe discovery is a severe limitation to utilize public and proprietary drug screening data to their maximum potential. We have created the BioAssay Ontology (BAO) project (http://bioassayontology.org) to develop common reference metadata terms and definitions ...
First-Principles Investigation of NOx and SOx Adsorption on Anatase- Supported BaO and Pt Overlayers
We present a density functional theory investigation of the adsorption properties of NO and NO2 as well as SO2 and SO3 on BaO and Pt overlayers on anatase TiO2(001) surface. Monolayers, bilayers, and trilayers of BaO grow without strain-induced large scale reconstructions. While the bilayer and trilayer preserve, to a large extent, the NO2 adsorption characteristics of the clean BaO(100) surfac...
Baryon Acoustic Oscillations (BAO) in the radial direction offer a method to directly measure the Universe expansion history, and to set limits to space curvature when combined to the angular BAO signal. In addition to spectroscopic surveys, radial BAO might be measured from accurate enough photometric redshifts obtained with narrow-band filters. We explore the requirements for a photometric su...
BaO adsorbents, together with transition metal catalysts, can be used to trap smog-causing NO from combustion effluent streams that lack CO or residual hydrocarbons as reductants. 3 Transition metals catalyze NO oxidation to NO2, a molecule that readily adsorbs on many porous solids, but which also inhibits NO oxidation by titrating active sites on catalytic surfaces with oxygen atoms. 8 As a r...
The baryon acoustic oscillations (BAO) prior to recombination should be imprinted onto the 21cm emission background from the epoch of reionization through the underlying density perturbations. Using an analytical approach for both matter power spectrum (CDM+baryons) and reionization process, we demonstrate the BAO induced signatures on the power spectrum of 21cm emission fluctuations. Future lo...
We have modelled the surface diffusion and growth of BaO and SrO both in the homoepitaxial and heteroepitaxial (BaO on SrO and SrO on BaO) cases. The diffusion proceeds most favourably by an exchange mechanism involving the surface layer. When impurities are adsorbed on the surface this can lead to intermixing between the layers. This strongly suggests that ionic materials may not be grown on a...
We measure the length of the baryon acoustic oscillation (BAO) feature, and the expansion rate of the recent Universe, from low-redshift data only, almost model independently. We make only the following minimal assumptions: homogeneity and isotropy, a metric theory of gravity, a smooth expansion history, and the existence of standard candles (supernovæ) and a standard BAO ruler. The rest is det...
On Time-Splitting Spectral Approximations for the Schrödinger Equation in the Semiclassical Regime Weizhu Bao,∗ Shi Jin,† and Peter A. Markowich‡ ∗Department of Computational Science, National University of Singapore, Singapore 117543; †Department of Mathematics, University of Wisconsin-Madison, Madison, Wisconsin 53706; and ‡Institute of Mathematics, University of Vienna Boltzmanngasse 9, A-10...
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