Now showing items 233-252 of 45409

  • A general convergence analysis of some Newton-type methods for nonlinear inverse problems 

    Jin, Q. N. (Siam Publications, 2011)
    We consider the methods x(n+1)(delta) - x(n)(delta) - g(alpha n) (F'(x(n)(delta))* F'(x(n)(delta)))F'(x(n)(delta))*(F(x(n)(delta)) - y(delta)) for solving nonlinear ill-posed inverse problems F(x) = y using the only available ...
  • A generalized rule for large piezoelectric response in perovskite oxide ceramics and its application for design of lead-free compositions 

    Ahn, Cheol-Woo; Maurya, Deepam; Park, Chee-Sung; Nahm, Sahn; Priya, Shashank (American Institute of Physics, 2009-06-01)
    We present a general rule for the perovskite oxide ceramics: "A large piezoelectric constant in ABO(3) perovskite ceramics can be obtained by tuning the weight ratio of A and B sites, WA/WB or WB/WA, to 3. Piezoelectric ...
  • A Glossary of Water-Related Terms 

    Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2009-05-01)
    A list with definitions to provide the reader with a working knowledge of terms that apply to Virginia's water resources.
  • A Guide to Successful Pruning. Decidous Tree Pruning Calendar 

    Appleton, Bonnie Lee, 1948-2012; French, Sue (Sue C.) (Virginia Cooperative Extension, 2009-05-01)
    This calendar is a guide to the proper time of the year to prune 45 deciduous trees common in Virginia.
  • A guide to successful pruning. Deciduous tree pruning calendar 

    Appleton, Bonnie Lee, 1948-2012; French, Sue (Sue C.) (Virginia Cooperative Extension Service, 1998)
    A calendar indicating best times during the year to prune various deciduous trees.
  • A guide to successful pruning. Evergreen tree pruning calendar 

    Appleton, Bonnie Lee, 1948-2012; French, Sue (Sue C.) (Virginia Cooperative Extension, 1998)
    A calendar indicating best times during the year to prune various evergreen trees.
  • A Guide to Successful Pruning. Evergreen Tree Pruning Calendar 

    Appleton, Bonnie Lee, 1948-2012; French, Sue (Sue C.) (Virginia Cooperative Extension, 2009-05-01)
    This calendar is a guide to the proper time of the year to prune 13 evergreen trees common in Virginia.
  • A Guide to Successful Pruning. Pruning Basics and Tools 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 2009-05-01)
    This guide reviews what pruning is and why it is important and what tools are necessary for efficient pruning.
  • A guide to successful pruning. Pruning basics and tools 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 1994)
    Discusses reasons for pruning and various pruning tools.
  • A guide to successful pruning. Pruning deciduous trees 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 1994)
    Describes proper pruning techniques for deciduous trees.
  • A Guide to Successful Pruning. Pruning Deciduous Trees 

    Appleton, Bonnie Lee, 1948-2012; French, Sue (Sue C.) (Virginia Cooperative Extension, 2009-05-01)
    Trees that shed their leaves annually are classified as deciduous. Before getting out your hand pruners, learn some basics about the anatomy, or supporting framework, of a deciduous tree.
  • A Guide to Successful Pruning. Pruning Evergreen Trees 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 2009-05-01)
    Evergreen trees have leaves that persist year round, and include most�conifers�and�some broad-leaved trees. Evergreen trees generally need less pruning than deciduous trees. This publication reviews the anatomy of evergreens, ...
  • A Guide to Successful Pruning. Pruning Shrubs 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 2009-05-01)
    Understanding the�natural habit�or�shape�of shrubs will help you determine how to prune them. This publication explores how and when to prune, maintenance and rejuvenation pruning, and the growth habit of shrubs.
  • A guide to successful pruning. Pruning shrubs 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 1994)
    Discusses different pruning techniques for shrubs.
  • A Guide to Successful Pruning. Shrub Pruning Calendar 

    Appleton, Bonnie Lee, 1948-2012; French, Sue (Sue C.) (Virginia Cooperative Extension, 2009-05-01)
    This calendar is a guide to the proper time of the year to prune many types of shrubs common in Virginia.
  • A guide to successful pruning. Stop topping trees! 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 1994)
    Explains how topping damages trees and offers alternative pruning methods.
  • A Guide to Successful Pruning. Stop Topping Trees! 

    French, Sue (Sue C.); Appleton, Bonnie Lee, 1948-2012 (Virginia Cooperative Extension, 2009-05-01)
    Topping occurs when the vertical stem and upper primary limbs on mature trees are cut back to stubs at uniform height. A wiser alternative to topping is careful selection and training of your young trees. Avoid topping ...
  • A high-field adiabatic fast passage ultracold neutron spin flipper for the UCNA experiment 

    Holley, A. T.; Broussard, L. J.; Davis, J. L.; Hickerson, K.; Ito, T. M.; Liu, C. Y.; Lyles, J. T. M.; Makela, M.; Mammei, R. R.; Mendenhall, M. P.; Morris, C. L.; Mortensen, R.; Pattie, R. W.; Rios, R.; Saunders, A.; Young, A. R. (AIP Publishing, 2012-07)
    The UCNA collaboration is making a precision measurement of the beta asymmetry (A) in free neutron decay using polarized ultracold neutrons (UCN). A critical component of this experiment is an adiabatic fast passage neutron ...
  • A high-temperature tolerant species in clade 9 of the genus Phytophthora: P-hydrogena sp nov 

    Yang, Xiao; Gallegly, Mannon E.; Hong, Chuanxue (Mycological Society of America, 2014-01)
    A previously unknown Phytophthora species was isolated from irrigation water in Virginia, USA. This novel species produces abundant noncaducous and nonpapillate sporangia in soil water extract solution. It sometimes produces ...
  • A History of the Development of Brucella Vaccines 

    Avila-Calderon, E. D.; Lopez-Merino, A.; Sriranganathan, N.; Boyle, S.; Contreras-Rodriguez, A. (Hindawi Publishing Corporation, 2013)
    Brucellosis is a worldwide zoonosis affecting animal and human health. In the last several decades, much research has been performed to develop safer Brucella vaccines to control the disease mainly in animals. Till now, ...