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Now showing items 93309-93328 of 93358

    • Zafer Gurdal honored with emeritus status 

      Crumbley, Liz (Virginia Tech. University Relations, 2006-03-31)
      Zafer Gurdal, professor of engineering science and mechanics and of aerospace and ocean engineering in the College of Engineering at Virginia Tech, was granted the title "professor emeritus" by the Virginia Tech Board of ...
    • Zalich Receives Fulbright Scholarship To Study Nano-Sized Polymer-Magnetite Complexes 

      Harris, Sally L. (Virginia Tech. University Relations, 2003-04-23)
      New Particles For Possible Use In Localized Treatment Of Diseases
    • Zambia Conservation Agriculture Programme (CAP) - a brief update 

      Conservation Farming Unit (Conservation Farming Unit, 2010)
      This presentation compares conventional systems and conservation agriculture practices in Zambia. Because of continuous soil disturbance from ploughing with oxen, the top soil is often exposed, which contributes to poor ...
    • Zambia: Community Markets for Conservation (COMACO) 

      WCS (2007-12-13)
      In Zambia's Luangwa Valley, WCS is encouraging farmers to use wildlife-friendly practices through a rural development model called Community Markets for Conservation (COMACO). Although not a very direct incentive scheme ...
    • Zampanolide and Dactylolide: Cytotoxic Tubulin-Assembly Agents and Promising Anticancer Leads 

      Chen, Qiao-Hong; Kingston, David G. I. (The Royal Society of Chemistry, 2014-06-19)
      Zampanolide is a marine natural macrolide and a recent addition to the family of microtubule-stabilizing cytotoxic agents. Zampanolide exhibits unique effects on tubulin assembly and is more potent than paclitaxel against ...
    • Zearalenone contamination in swine feed and the effects on reproductive health 

      Pack, Erica Danielle (Virginia Tech, 2021-04-15)
      Zearalenone (ZEN) is an estrogenic mycotoxin produced by fungi in the genus Fusarium. Fusarium species commonly occur in cereal crops such as corn, wheat, barley, and rice which are used in swine feed. In addition to ...
    • Zebra GC: A Fully Integrated Micro Gas Chromatography System 

      Garg, Apoorva (Virginia Tech, 2014-08-29)
      A ready-to-deploy implementation of microfabricated gas chromatography (microGC) system characterized for detecting hazardous air pollutants (HAPs) at parts-per-billion (ppb) concentrations in complex mixtures has been ...
    • Zebra Mussels Pose a Threat to Virginia's Waters 

      Helfrich, Louis A.; Weigmann, Diana L.; Speenburgh, Renee M.; Neves, Richard J.; Kitchel, Lisie; Bruenderman, Sue A. (Virginia Cooperative Extension, 2005-09-01)
      Provides an brief introduction to the invasion of the zebra mussel into American waters, explains the economic consequences they pose, and discusses if Virginia will inherit the problem, what the public can do to help, the ...
    • Zebrabow: multispectral cell labeling for cell tracing and lineage analysis in zebrafish2013 

      Pan, Y. Albert; Freundlich, Tom; Weissman, Tamily A.; Schoppik, David; Wang, X. Cindy; Zimmerman, Steve; Ciruna, Brian; Sanes, Joshua R.; Lichtman, Jeff W.; Schier, Aexander F. (Company of Biologists, 2013-07-01)
      Advances in imaging and cell-labeling techniques have greatly enhanced our understanding of developmental and neurobiological processes. Among vertebrates, zebrafish is uniquely suited for in vivo imaging owing to its small ...
    • Zenobia L. Hikes named vice president for student affairs 

      Hincker, Lawrence (Virginia Tech. University Relations, 2005-06-22)
      Zenobia L. Hikes, vice president for student affairs and dean of students at Spelman College in Atlanta, Ga., has been named vice president for student affairs at Virginia Tech. She will begin her new position Sept. 1.
    • Zero Divisors, Group Von Neumann Algebras and Injective Modules 

      Roman, Ahmed Hemdan (Virginia Tech, 2015-06-29)
      In this thesis we discuss linear dependence of translations which is intimately related to the zero divisor conjecture. We also discuss the square integrable representations of the generalized Wyle-Heisenberg group in 𝑛² ...
    • Zero or not? Causes and consequences of zero-flow stream gage readings 

      Zimmer, Margaret A.; Kaiser, Kendra E.; Blaszczak, Joanna R.; Zipper, Samuel C.; Hammond, John C.; Fritz, Ken M.; Costigan, Katie H.; Hosen, Jacob; Godsey, Sarah E.; Allen, George H.; Kampf, Stephanie K.; Burrows, Ryan M.; Krabbenhoft, Corey A.; Dodds, Walter K.; Hale, Rebecca; Olden, Julian D.; Shanafield, Margaret; DelVecchia, Amanda G.; Ward, Adam S.; Mims, Meryl C.; Datry, Thibault; Bogan, Michael T.; Boersma, Kate S.; Busch, Michelle H.; Jones, C. Nathan; Burgin, Amy J.; Allen, Daniel C. (2020-05)
      Streamflow observations can be used to understand, predict, and contextualize hydrologic, ecological, and biogeochemical processes and conditions in streams. Stream gages are point measurements along rivers where streamflow ...
    • Zero Quantum Nuclear Magnetic Resonance experiments utilizing a toroid cell and coil 

      Bebout, William Roach (Virginia Tech, 1989-04-15)
      Over the past ten to fifteen years the area of Nuclear Magnetic Resonance (NMR) Spectroscopy has seen tremendous growth. For example, in conjunction with multiple quantum NMR, molecular structural mapping of a compound can ...
    • Zero tillage development in tropical Brazil: The story of a successful NGO activity 

      Landers, John N. (Wageningen, Netherlands: Wageningen University and Research Centre, 2001)
    • Zero to 60 in One Semester: Using an Applied Advanced Selling Project to Build a Professional Sales Program [Summary] 

      Honerkamp, Vincent (Virginia Tech, 2020-03-06)
      Application of this type of project can be applied in other sales and business courses. For example, a similar project could be used in a sales management course or human resources class in which students recruit students ...
    • Zero Voltage Switching (ZVS) Turn-on Triangular Current Mode (TCM) Control for AC/DC and DC/AC Converters 

      Haryani, Nidhi (Virginia Tech, 2020-01-10)
      One of the greatest technological challenges of the world today is reducing the size and weight of the existing products to make them portable. Specifically, in electric vehicles such as electric cars, UAVs and aero planes, ...
    • Zero voltage zero current three level DC-DC converter 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Canales-Abarca, Francisco; Barbosa, Peter M. (United States Patent and Trademark Office, 2002-02-19)
      A three-level DC-to-DC converter is provided having zero-voltage and zero-current switching (ZVZCS). A flying capacitor is provided on the primary side of the converter to achieve zero voltage switching (ZVS). In addition, ...
    • Zero-current transition PWM converters 

      Electrical and Computer Engineering; Center for Power Electronics Systems; Center for Innovative Technology; Intellectual Properties | Kft; Virginia Tech; Lee, Fred C.; Hua, Guichao C. (United States Patent and Trademark Office, 1996-01-23)
      A zero-current transition pulse-width modulated (ZCT-PWM) d.c.-d.c. converter allows minority-carrier semiconductor devices such as, for example, bipolar junction transistors (BJTs), insulated gate bipolar transistors ...
    • Zero-pole interpolation of nonregular rational matrix functions 

      Rakowski, Marek (Virginia Polytechnic Institute and State University, 1989)
      In this thesis the right and left pole structure of a not necessarily regular rational matrix function W is described in terms of pairs of matrices-right and left pole pairs. The concept of orthogonality in Rn ...
    • Zero-voltage switched resonant and PWM converters: design-oriented analysis and performance evaluation 

      Sabaté, Juan A. (Virginia Tech, 1994-04-26)
      The relative performance evaluation of the different alternatives of bridge topologies with zero-voltage switching is presented. A design-oriented analysis is developed to optimize implementation of the converters in terms ...