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Results for “hardness”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Hard-Magnet L1[subscript 0]-CoPt Nanoparticles Advance Fuel Cell Catalysis
Abstract not provided
hardness relationships of new nickel-rich nickel-titanium-hafnium alloys developed for tribological
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Measurement of the dependence of transverse energy production at large pseudorapidity on the hard-scattering kinematics of proton–proton collisions at s = 2.76 TeV with ATLAS
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Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at s = 8 TeV with the ATLAS detector
Not Available
Hard X-ray Multilayer Mirror Round-Robin on the Wavefront Preservation Capabilities of W/B(4)C Coatings
Abstract not provided
The Bionanoprobe: Synchrotron-Based Hard X-ray Fluorescence Microscopy for 2D/3D Trace Element Mapping
Trace elements, particularly metals, play an important role in a large variety of cellular processes in a biological system. In the context of biological organisms and tissues, the term trace element means that over the entire organisms an element is present at only trace levels, 100ppm or lower. Trace element distribution and content can be analyzed using several techniques, for example, visible light optical fluorescence imaging, energy-dispersive X-ray spectroscopy on an election microscope, synchrotron-based X-ray fluorescence (XRF) imagine,
In operando tracking phase transformation evolution of lithium iron phosphate with hard X-ray microscopy
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Water on BN doped benzene: A hard test for exchange-correlation functionals and the impact of exact exchange on weak binding
Density functional theory (DFT) studies of weakly interacting complexes have recently focused on the importance of van der Waals dispersion forces, whereas the role of exchange has received far less attention. Here, by exploiting the subtle binding between water and a boron and nitrogen doped benzene derivative (1,2-azaborine) we show how exact exchange can alter the binding conformation within a complex. Benchmark values have been calculated for three orientations of the water monomer on 1,2-azaborine from explicitly correlated quantum chemical methods, and we have also used diffusion quantum Monte Carlo. For a host of popular DFT exchange-correlation functionals we show that the lack of exact exchange leads to the wrong lowest energy orientation of water on 1,2-azaborine. As such, we suggest that a high proportion of exact exchange and the associated improvement in the electronic structure could be needed for the accurate prediction of physisorption sites on doped surfaces and in complex organic molecules. Meanwhile to predict correct absolute interaction energies an accurate description of exchange needs to be augmented by dispersion inclusive functionals, and certain non-local van der Waals functionals (optB88- and optB86b-vdW) perform very well for absolute interaction energies. Through a comparison with water on benzene and borazine (B{sub 3}N{sub 3}H{sub 6}) we show that these results could have implications for the interaction of water with doped graphene surfaces, and suggest a possible way of tuning the interaction energy.