نتایج جستجو برای: nanoscale
تعداد نتایج: 23864 فیلتر نتایج به سال:
Experiences designing and deploying NAMD-G, an infrastructure for executing biomolecular simulations using the parallel molecular dynamics code NAMD within the context of a Computational Grid, are described. The effort is motivated by a general outline of the tasks involved in conducting research of this class as traditionally undertaken, followed by a description of the enhancements offered by...
It has been suggested that ice cores may preserve detectable enhancements of some terrestrially rare radioisotopes, Be, Al, Cl, resulting from a near-Earth core-collapse supernova(SN) [1]. Both Be and Cl are also produced by atmospheric cosmic ray spallation and hence are influenced by processes that modulate the Earth’s cosmic ray flux. Previous studies [2], [3] have suggested that enhancement...
Nano-TiO2 (NT) and nano-SiO2 (NS) were separately added in the cement paste to investigate the rheological property of fresh mixtures and mechanical strength in hardened state. The effects of different dosages and types of nano-particles on the properties of cement paste were studied. The results indicated that the rheological behavior of the fresh cement paste coincides with the Modified Bingh...
a Institut de Physique de Rennes, CNRS-UMR 6251, Université Rennes 1, F-35042 Rennes, France b UMR FOTON, CNRS, INSA-Rennes, F-35708 Rennes, France c GdS Optronlab, Dpto. Fisica de la Materia Condensada, Universidad de Valladolid, 47011 Valladolid, Spain d III-V Lab, Route de Nozay, F-91461 Marcoussis, France e OSUR, Plateforme NanoSIMS, Université Rennes 1, 35042 Rennes, France f Istituto CNR-...
In present work a experimental study based on thermosyphon is investigated using a solid nano-particles added to water as a working fluid. Tests are made on a thermosyphon. The experiment was performed in order to measure the temperature distribution and compare the heat transfer rate of the thermosyphon with the nano uid and with pure water. The tested concentration level of the nano-particles...
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Ion beam bombardment, as a unique and facile technique, was found and developed to fabricate nano-networks from rigid nano-rods. To study the differences of their characteristics, attapulgite (ATP)was chosen as amodel. The results ofmethylene blue adsorption performance investigation demonstrated that attapulgite nano-networks (ATP-N) have better adsorption capability than the attapulgite nano-...
IMAGING IN ACFER 094. Christian Vollmer, Frank E. Brenker, Peter Hoppe, and Rhonda M. Stroud. Max Planck Institute for Chemistry, Particle Chemistry Dept., Joh.-J.-Becherweg 27, D-55128 Mainz, Germany ([email protected]); Geoscience Institute/Mineralogy, Goethe-University Frankfurt, Altenhoeferallee 1, D-60438 Frankfurt, Germany; Naval Research Laboratory, Code 6360, Washington, DC, 20...
Multi-core accelerators offer significant potential to improve the performance of parallel applications. However, tools to help the parallel application developer understand accelerator performance and its impact are scarce. An approach is presented to measure the performance of GPU computations programmed using CUDA and integrate this information with application performance data captured with...
Introduction: Grain size separate CG from the Murray CM2 carbonaceous chondrite contains mostly spinel grains of average diameter 0.5 μm [1]. Zinner et al. [2] found that approximately 1% of these spinel grains are of presolar origin as determined by their large O isotopic anomalies. These O isotopic measurements were made with the NanoSIMS on individual grains that were well separated from one...
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