David M. Griffin

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Highly resilient synthetic hydrogels were synthesized by using the efficient thiol-norbornene chemistry to cross-link hydrophilic poly(ethylene glycol) (PEG) and hydrophobic polydimethylsiloxane (PDMS) polymer chains. The swelling and mechanical properties of the hydrogels were controlled by the relative amounts of PEG and PDMS. The fracture toughness(More)
have changed the scope of network computing. As the Internet user population has grown, so has the demand for better ways to collaborate on the Internet. Some examples include the ability to share and discuss issues of common interest, coauthor documents, and track project status. Although today’s WWW is ideal for publishing information, it requires(More)
The removal of fungal spores, urediniospores ofMelampsora medusae and conidia ofPestalozzia sp., from the leaf surfaces ofPopulus xeuramericana (Dode) Guinier cv. I-488 was assessed using three cultural techniques conventionally employed in phylloplane studies. The method of removal and the original density of spore deposition, but not the interaction of(More)
OG&E is a company that has a long history of dealing with the damage left behind by storms. On May 3, 1999 a series of tornadoes raked OG&E’s service territory including a record setting tornado that hit the Oklahoma City metropolitan area. The result was more than 167,000 customers without power and $14 million in damage to the electric system. In addition(More)
Diagnostic imaging continues to place high demands on hospital and health system capital budgets due to the high cost of most equipment and the rate of technological change. Diagnostic imaging also can be a significant service in competitive positioning, both alone and in conjunction with other programs and services. The purpose of this article is to(More)
Polymer networks are critically important for numerous applications including soft biomaterials, adhesives, coatings, elastomers, and gel-based materials for energy storage. One long-standing challenge these materials present lies in understanding the role of network defects, such as dangling ends and loops, developed during cross-linking. These defects can(More)
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