Now showing items 11-20 of 646
(Virginia Polytechnic Institute and State University, 1989)
Effect of chain structure on the thermodynamics and kinetics of polymer crystallization
(Virginia Tech, 1995)
Influence of Electrostatic Interactions and Hydrogen Bonding on the Thermal and Mechanical Properties of Step-Growth Polymers
(Virginia Tech, 2008-10-21)
Current research efforts have focused on the synthesis of novel, segmented, cross-linked networks and thermoplastics for emerging technologies. Tailoring macromolecular structures for improved mechanical performance can ...
Modulation of Hydroxyl Radical Reactivity and Radical Degradation of High Density Polyethylene
(Virginia Tech, 2010-06-25)
Oxidative processes are linked to a number of major disease states as well as the breakdown of many materials. Of particular importance are reactive oxygen species (ROS), as they are known to be endogenously produced in ...
Studies in the stereoselective synthesis of 1,1-disubstituted 1,2,3,4-tetrahydroisoquinolines
(Virginia Tech, 1992-10-06)
Isoquinoline alkaloids and analogs play an important role in today's pharmaceutical industry. The need to synthesize single stereoisomers of these alkaloids is important. Many times only a single stereoisomer exhibits the ...
Synthesis and Characterization of Well-Defined Poly(1,3-Cyclohexadiene) Homopolymers and Copolymers
(Virginia Tech, 2003-08-21)
Polymers containing poly(1,3-cyclohexadiene) were synthesized using a novel pre-formed initiator comprised of an alkyllithium and a tertiary diamine. The use of a pre-formed intiator at moderate temperatures (25Â° C) ...
Pin1 Inhibitors: Towards Understanding the Enzymatic Mechanism
(Virginia Tech, 2010-05-06)
An important role of Pin1 is to catalyze the cis-trans isomerization of pSer/Thr-Pro bonds; as such, it plays an important role in many cellular events through the effects of conformational change on the function of its ...
Approximate Spin Extended Hartree-Fock theory
(Virginia Polytechnic Institute and State University, 1978)
MRI and NMR Investigations of Transport in Soft Materials and Explorations of Electron-Nuclear Interactions for Liquid-State Dynamic Nuclear Polarization
(Virginia Tech, 2015-08-28)
The first part of this dissertation (Chapters 1 to 4) describes the use of magnetic resonance techniques for polymeric material characterizations in solutions, with emphasis on methods utilizing magnetic field gradients - ...
Equilibrium Melting Temperature Determination of Semicrystalline Polymers through Nonlinear Hoffman-Weeks Extrapolation and Secondary Crystallization of Ethylene/Styrene Copolymers
(Virginia Tech, 1999-10-21)
The applicability of the conventional Hoffman-Weeks (HW) linear extrapolation for the determination of the equilibrium melting temperatures of semicrystalline polymers is critically reviewed. It is shown that the linear ...