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Displaying 30251 - 30275 of 143793

Heat pump concepts for nZEB – Technology developments, design tools and testing of heat pump systems for nZEB in the USA, Country report IEA HPT Annex 40 Task 2, Task 3 and Task 4 of the USA

December 8, 2015
Author(s)
William V. Payne, Arthur H. Fanney, William M. Healy, Joshua D. Kneifel, Tania Ullah, Farhad Omar, Steven T. Bushby, Brian P. Dougherty, Dustin G. Poppendieck, Lisa C. Ng
The IEA HPT Annex 40 "Heat pump concepts for Nearly Zero Energy Buildings" deals with the application of heat pumps as a core component of the HVAC system for Nearly or Net Zero energy buildings (NZEB). This report covers Task 2 on the system comparison

Integrity of Bolted Angle Connections Subjected to Simulated Column Removal

December 8, 2015
Author(s)
Jonathan M. Weigand, Jeffrey W. Berman
Large-scale tests of steel gravity framing systems (SGFSs), one of the most commonly used structural systems in the United States, have shown that enhancements may be required to achieve the desired levels of integrity to collapse when a column suffers

One Dimensional(1D)-to-2D Crossover of Spin Correlations in the 3D Magnet ZnMn 2 O 4

December 8, 2015
Author(s)
Steven M.T. Disseler, Ying Chen, S. Yeo, G. Gasparovic, P.M.B. Piccoli, A. J. Schultz, Yiming Qiu, Qingzhen Huang, S.-W. Cheong, William D. Ratcliff
We report on the intriguing evolution of the dynamical spin correlations of the frustrated spinel ZnMn 2O 4. Inelastic neutron scattering and magnetization studies reveal that the dynamical correlations at high temperatures are 1D. At lower temperature

Programmable Extreme Pseudomagnetic Fields in Graphene by a Uniaxial Stretch

December 8, 2015
Author(s)
Shuze Zhu, Joseph A. Stroscio, Teng Li
Many of the properties of graphene are tied to its lattice structure, allowing for tuning of charge carrier dynamics through mechanical strain. The graphene electro-mechanical coupling yields very large pseudomagnetic fields for small strain fields, up to

Towards a Reconfigurable Distributed Testbed to Enable Advanced Research and Development of Timing and Synchronization in Cyber-Physical Systems

December 8, 2015
Author(s)
Aviral Shrivastava, J C. Eidson, Marc A. Weiss, Ya-Shian Li-Baboud, Hugo Andrade, Patricia Derler, Kevin Stanton
Timing and synchronization play a key role in advanced cyber-physical systems (CPS). Precise timing, as often required in safety-critical CPS, depends on hardware support for enforcement of periodic measure, compute, and actuate cycles. For general CPS

Charge Screening in RNA: An Integral Route for Dynamical Enhancements

December 7, 2015
Author(s)
Joon Ho Roh, Madhu Sudan Tyagi, Pulakesh Aich, R. M. Briber, Sarah A. Woodson, Kimoon Kim
Electrostatic interactions of RNA are in the center of determining the dynamical flexibility and structural stability. By Analysing neutron scattering spectroscopy, we show that fast dynamics of hydrated tRNA on ps to ns timescales increases with stronger

Edge-state Transport in Graphene p-n Junctions in the Quantum Hall Regime

December 7, 2015
Author(s)
Nikolai Klimov, Son T. Le, Jun Yan, Pratik Agnihotri, Everett Comfort, Ji Ung Lee, David B. Newell, Curt A. Richter
We experimentally investigate charge carrier transport in a graphene p-n junction device by using independent p-type and n-type electrostatic gating which allow full characterization of the junction interface in the quantum Hall regime covering a wide

Nanocatalyst shape and composition during nucleation of single-walled carbon nanotubes

December 7, 2015
Author(s)
Jose Gomez-Ballesteros, Juan Burgos, Pin A. Lin, Renu Sharma, Perla Balbuena
The dynamic evolution of nanocatalyst particle shape and carbon composition is examined through the initial stages of the single walled-carbon nanotubes chemical vapor deposition synthesis via classical reactive and ab initio molecular dynamics simulations

Quantum Nondemolition Measurement of a Nonclassical State of a Massive Object

December 7, 2015
Author(s)
Florent Q. Lecocq, Jeremy B. Clark, Raymond W. Simmonds, Jose A. Aumentado, John D. Teufel
By coupling a macroscopic mechanical oscillator to two microwave cavities, we simultaneously prepare and monitor a nonclassical steady state of mechanical motion. In each cavity, correlated radiation pressure forces induced by two coherent drives engineer

Shape critical properties of patterned Permalloy thin films

December 7, 2015
Author(s)
Robert D. Shull, Y. P. Kabanov, V S. Gornakov, Andrew P. Chen, Valerian I. Nikitenko
The effects of shape and edges in magnetic elements with reduced dimensions on the magnetization reversal of cross- and framed cross- shaped Ni(sub79)Fe(sub21) (30mn) films were studied. Remagnetization details in the stripes of the patterned structures

Accurate multiconfiguration calculations of energy levels, lifetimes and transition rates for the silicon isoelectronic sequence: Ti IX - Ge XIX, Sr XXV, Zr XXVII, Mo XXIX

December 6, 2015
Author(s)
P. Jonsson, L Radziute, G. Gaigalas, M. Godefroid, J P. Marques, T Brage, Charlotte F. Fischer, I. P. Grant
Multiconfiguration Dirac-Hartree-Fock (MCDHF) calculations and relativistic configuration interaction (RCI) calculations are performed for states of the 3s23p2, 3s3p3 and 3s23p3d configurations in the Si-like ions Ti IX - Ge XIX, Sr XXV, Zr XXVII, Mo XXIX
Displaying 30251 - 30275 of 143793
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