Now showing items 1394-1413 of 2372

    • Nanodispersed DO(3)-phase nanostructures observed in magnetostrictive Fe-19% Ga Galfenol alloys 

      Bhattacharyya, S.; Jinschek, J. R.; Khachaturyan, A.; Cao, H.; Li, J. F.; Viehland, D. (American Physical Society, 2008-03-10)
      Few nanometer large (<2 nm) inclusions of DO(3)-phase structure have been identified in the A2 matrix of highly magnetostrictive Fe-19% Ga alloys by high-resolution transmission electron microscopy (HRTEM). In addition, ...
    • Nanogrowth twins and abnormal magnetic behavior in CoFe2O4 epitaxial thin films 

      Yan, Li; Wang, Yu; Li, Jiefang; Pyatakov, Alexander; Viehland, Dwight D. (American Institute of Physics, 2008-12-15)
      Nanogrowth twins (GTs) have been observed in CoFe2O4 (CFO) epitaxial thin films deposited on (111) oriented SrTiO3 substrates by pulsed laser deposition. The GTs form during nucleation and growth and consist of CFO growth ...
    • Nanoindentation of thin films: Simulations and experiments 

      Nair, A. K.; Cordill, M. J.; Farkas, D.; Gerberich, W. W. (Cambridge University Press, 2009-03)
      Atomistic Simulations of nanoindentation of a 20-nm-thick Ni thin film oriented in the [111] direction were carried out to study the effects of indenter velocity and radii, interatomic potentials, and the boundary conditions ...
    • Nanomaterial Disposal by Incineration 

      Holder, Amara L.; Vejerano, Eric P.; Zhou, Xinzhe; Marr, Linsey C. (The Royal Society of Chemistry, 2013-07-11)
      As nanotechnology-based products enter into widespread use, nanomaterials will end up in disposal waste streams that are ultimately discharged to the environment. One possible end-of-life scenario is incineration. This ...
    • Nanotwinned fcc metals: Strengthening versus softening mechanisms 

      Stukowski, A.; Albe, K.; Farkas, D. (American Physical Society, 2010-12)
      The strengthening effect of twins in nanocrystalline metals has been reported both in experiment and simulation. While twins are mostly considered as effective barriers to dislocation slip transfer, they can also provide ...
    • Native Backfill Materials for Mechanically Stabilized Earth Walls 

      Joseph E. Dove; Jesse N. Darden (Virginia Center for Transportation Innovation and Research, 2005-04), VTRC 05-CR12
      Mechanically stabilized earth walls are an attractive alternative to conventional reinforced concrete retaining walls. The economy of these walls for non-critical applications might be improved by using alternative backfills ...
    • Natural Categories for More Natural Generation 

      Cline, Ben E.; Nutter, J. Terry (Department of Computer Science, Virginia Polytechnic Institute & State University, 1990), TR-90-22
    • Natural frequencies of curved elastic arcs 

      Kudva, Jayanth N.; Nayfeh, Ali H.; Kamat, Manohar P. (Acoustical Society of America, 1978-12)
      A perturbation analysis is presented for calculating the inextensional natural frequencies of curved elastic arcs. Variation of the radius of curvature along the arc length is accounted for by considering the curvature to ...
    • Natural Language Toolkit (NLTK) 

      Shu, Xiaokui; Cohen, Ron (2010-10-25)
      This module is a teaching and studying platform for prototyping and building research systems on natural language processing (NLP), related to linguistics, cognitive science, artificial intelligence, information retrieval, ...
    • Near-field pressure, intensity, and wave-number distributions for active structural acoustic control of plate radiation: Theoretical analysis 

      Wang, Bor-Tsuen; Fuller, Chris R. (Acoustical Society of America, 1992-09)
      This paper presents a theoretical analysis of near-field time-averaged intensity and pressure distributions of actively controlled plate-radiated sound. A harmonic point force was considered as a noise source, and a ...
    • Near-ideal magnetoelectricity in high-permeability magnetostrictive/piezofiber laminates with a (2-1) connectivity 

      Dong, S. X.; Zhai, J. Y.; Li, J. F.; Viehland, D. (AIP Publishing, 2006-12)
      Theoretically, the two-phase laminated configurations should have even much higher magnetoelectric (ME) effects-however, prior experimental studies have failed to find such an enhancement. Here, the authors report the ...
    • Near-Real-Time Analysis of the Phenotypic Responses of Escherichia coli to 1-Butanol Exposure Using Raman Spectroscopy 

      Zu, Theresah N. K.; Athamneh, Ahmad I. M.; Wallace, Robert S.; Collakova, Eva; Senger, Ryan S. (American Society for Microbiology, 2014-08-25)
      Raman spectroscopy was used to study the time course of phenotypic responses of Escherichia coli (DH5 alpha) to 1-butanol exposure (1.2% [vol/vol]). Raman spectroscopy is of interest for bacterial phenotyping because it ...
    • The Need for Ethics Education in Computer Curriculum 

      Lee, John A. N. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1991-05-01), TR-91-25
    • NetEdit: A Collaborative Editor 

      Zaffer, Ali A.; Shaffer, Clifford A.; Ehrich, Roger W.; Perez, Victor M. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2001), TR-01-13
    • Network structure and thermal stability study of high temperature seal glass 

      Lu, Kathy; Mahapatra, Manoj K. (American Institute of Physics, 2008-10-01)
      High temperature seal glass has stringent requirement on glass thermal stability, which is dictated by glass network structures. In this study, a SrO-La2O3-Al2O3-B2O3-SiO2 based glass system was studied using nuclear ...
    • Network-Based Prediction and Analysis of HIV Dependency Factors 

      Murali, T. M.; Dyer, Matthew D.; Badger, David; Tyler, Brett M.; Katze, Michael G. (Public Library of Science, 2011-09-22)
      HIV Dependency Factors (HDFs) are a class of human proteins that are essential for HIV replication, but are not lethal to the host cell when silenced. Three previous genome-wide RNAi experiments identified HDF sets with ...
    • neutral stability calculations for boundary-layer flows 

      Nayfeh, A. H.; Padhye, A. (AIP Publishing, 1980)
      An analysis is presented of the parallel neutral stability of three‐dimensional incompressible, isothermal boundary‐layer flows. A Taylor‐series expansion of the dispersion relation is used to derive the general eigenvalues. ...
    • Neutron and x-ray diffraction study of cubic [111] field-cooled Pb(Mg1/3Nb2/3)O-3 

      Stock, C.; Xu, G. Y.; Gehring, P. M.; Luo, H.; Zhao, X.; Cao, H.; Li, J. F.; Viehland, D.; Shirane, G. (American Physical Society, 2007-08)
      Neutron and x-ray diffraction techniques have been used to study the competing long- and short-range polar order in the relaxor ferroelectric Pb(Mg1/3Nb2/3)O-3 (PMN) under a [111] applied electric field. Despite reports ...
    • A New Adaptive GMRES Algorithm for Achieving High Accuracy 

      Sosonkina, Masha; Watson, Layne T.; Kapania, Rakesh K (Department of Computer Science, Virginia Polytechnic Institute & State University, 1996-05-01), TR-96-09
    • New Algorithms for Generating Conway Polynomials over Finite Fields 

      Heath, Lenwood S.; Loehr, Nicholas A (Department of Computer Science, Virginia Polytechnic Institute & State University, 1998-07-01), TR-98-14