Now showing items 1546-1565 of 3126

    • Label-free analysis of physiological hyaluronan size distribution with a solid-state nanopore sensor 

      Rivas, Felipe; Zahid, Osama K.; Reesink, Heidi L.; Peal, Bridgette T.; Nixon, Alan J.; DeAngelis, Paul L.; Skardal, Aleksander; Rahbar, Elaheh; Hall, Adam R. (Springer Nature, 2018-03-12)
      Hyaluronan (or hyaluronic acid, HA) is a ubiquitous molecule that plays critical roles in numerous physiological functions in vivo, including tissue hydration, inflammation, and joint lubrication. Both the abundance and ...
    • Label-free DNA sequence detection using oligonucleotide functionalized optical fiber 

      Wang, X. W.; Cooper, K. L.; Wang, Anbo; Xu, J. C.; Wang, Z. A.; Zhang, Y.; Tu, Z. J. (AIP Publishing, 2006-10-01)
      The authors present a label-free method for direct detection of deoxyribonucleic acid (DNA) sequences. The capture DNA is immobilized onto the surface of a silica optical fiber tip by means of the layer-by-layer electrostatic ...
    • Laboratory Tests for Hot-Mix Asphalt Characterization in Virginia 

      Flintsch, Gerardo W.; Imad L. Al-Qadi; Loulizi, Amara; Mokarem, David W. (Virginia Center for Transportation Innovation and Research, 2005-06-01)
      This project reviewed existing laboratory methods for accurately describing the constitutive behavior of the mixes used in the Commonwealth of Virginia. Indirect tensile (IDT) strength, resilient modulus, static creep in ...
    • Lagrangian coherent structures are associated with fluctuations in airborne microbial populations 

      Tallapragada, Phanindra; Ross, Shane D.; Schmale, David G. III (American Institute of Physics, 2011-09-01)
      Many microorganisms are advected in the lower atmosphere from one habitat to another with scales of motion being hundreds to thousands of kilometers. The concentration of these microbes in the lower atmosphere at a single ...
    • Lancet Dynamics in Greater Horseshoe Bats, Rhinolophus ferrumequinum 

      He, Weikai; Pedersen, Scott C.; Gupta, Anupam K.; Simmons, James A.; Mueller, Rolf (PLOS, 2015-04-08)
      Echolocating greater horseshoe bats (Rhinolophus ferrumequinum) emit their biosonar pulses nasally, through nostrils surrounded by fleshy appendages (‘noseleaves’) that diffract the outgoing ultrasonic waves. Movements of ...
    • The Land Development Design Initiative (LDDI) 2013 Annual Report 

      Unknown author (Virginia Tech, 2013)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...
    • The Land Development Design Initiative (LDDI) 2014 Annual Report 

      Unknown author (Virginia Tech, 2014)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...
    • The Land Development Design Initiative (LDDI) 2015 Annual Report 

      Unknown author (Virginia Tech, 2015)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...
    • The Land Development Design Initiative (LDDI) 2016 Annual Report 

      Unknown author (Virginia Tech, 2016)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...
    • The Land Development Design Initiative (LDDI) 2017 Annual Report 

      Unknown author (Virginia Tech, 2017)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...
    • The Land Development Design Initiative (LDDI) 2018 Annual Report 

      Unknown author (Virginia Tech, 2018)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...
    • Language Extensions for Specifying Access Control Policies in Programming Languages 

      Claybrook, Billy G.; Hartson, H. Rex (Department of Computer Science, Virginia Polytechnic Institute & State University, 1980), CS80011-R
      The scope rules in programming languages control the sharing of data among program units-e.g., blocks and procedures. Typically, scope rules provide an all-or-nothing kind of access control. A wide range of programming ...
    • Large Deformations of a Whirling Elastic Cable 

      Wang, Chang Y.; Watson, Layne T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1990), TR-90-19
      The large deformations of a whirling elastic cable is studied. The ends of the cable are hinged but otherwise free to translate along the rotational axis. The nonlinear governing equations depend on a rotation-elasticity ...
    • Large Deformations of Rotating Polygonal Space Structures 

      Watson, Layne T.; Wang, Chang Y. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1990), TR-90-49
      The effects of rotation on space structures are very important nowadays. Because the structures are large and thus relatively flexible, unacceptable stresses or deformations may occur due to centrifugal forces. In a ...
    • Large field-induced-strain at high temperature in ternary ferroelectric crystals 

      Wang, Yaojin; Chen, Lijun; Yuan, Guoliang; Luo, Haosu; Li, Jiefang; Viehland, Dwight D. (Springer Nature, 2016-10-13)
      The new generation of ternary Pb(In1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 ferroelectric single crystals have potential applications in high power devices due to their surperior operational stability relative to the binary ...
    • Large High Resolution Displays for Co-Located Collaborative Intelligence Analysis 

      Bradel, Lauren; Andrews, Christopher; Endert, Alex; Koch, Kristen; Vogt, Katherine; Hutchings, Duke; North, Chris (Department of Computer Science, Virginia Polytechnic Institute & State University, 2011-11-01), TR-11-23
      Large, high-resolution vertical displays carry the potential to increase the accuracy of collaborative sensemaking, given correctly designed visual analytics tools. From an exploratory user study using a fictional intelligence ...
    • Large magnetoelectric susceptibility: The fundamental property of piezoelectric and magnetostrictive laminated composites 

      Zhai, Junyi; Li, Jiefang; Viehland, Dwight D.; Bichurin, Mirza I. (American Institute of Physics, 2007-01-01)
      The magnetoelectric (ME) susceptibility (alpha(me)) is the fundamental property that describes the coupling between the polarization and magnetization of a ME media. It is a complex quantity (alpha(*)(me)) which has rarely ...
    • Large piezoresistivity phenomenon in SiCN-(La,Sr)MnO3 composites 

      Karmarkar, M.; Singh, G.; Shah, S.; Mahajan, Roop L.; Priya, Shashank (AIP Publishing, 2009-02-01)
      We present the results on SiCN-(La,Sr)MnO3 (LSMO) composites correlating the observed large piezoresistance behavior with the microstructural features and defect chemistry. Scanning electron microscopy characterization ...
    • Large-Eddy Simulation of Longitudinal Stationary Vortices 

      Sreedhar, M.; Ragab, Saad A. (AIP Publishing, 1994-07-01)
      The response of longitudinal stationary vortices when subjected to random perturbations is investigated using temporal large-eddy simulation. Simulations are obtained for high Reynolds numbers and at a low subsonic Mach ...
    • A large-scale RNA interference screen identifies genes that regulate autophagy at different stages 

      Guo, Sujuan; Pridham, Kevin J.; Virbasius, Ching-Man; He, Bin; Zhang, Liqing; Varmark, Hanne; Green, Michael R.; Sheng, Zhi (Nature Publishing Group, 2018-02-12)
      Dysregulated autophagy is central to the pathogenesis and therapeutic development of cancer. However, how autophagy is regulated in cancer is not well understood and genes that modulate cancer autophagy are not fully ...