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Displaying 1901 - 1925 of 1936

Optical Monitoring of Polypropylene Injection Molding

January 1, 1999
Author(s)
C L. Thomas, Anthony J. Bur
We have constructed an optical fiber sensor for monitoring injection molding and we have developed a model to describe sensor behavior. The sensor consists of a sapphire window at the end of a sleeved ejector pin into which an optical fiber is inserted

Polymers 1998 Programs and Accomplishments

January 1, 1999
Author(s)
B M. Fanconi, Donald L. Hunston
Technical activities of the Polymers Division, 854, for the 1998 fiscal year are described. Thereport is organized by programs: Electronic Packaging, Interconnection and Assembly; Polymer Blends and Processing; Polymer Composites; Polymer Characterization

Demineralizing Effect of Dental Cements on Human Dentin

November 1, 1998
Author(s)
Y Shimada, Y Kondo, S Inokoshi, J Tagami, Joseph M. Antonucci
This study was undertaken to verigy the hypothesis that dentin surfaces are demineralized during placement of four kinds of chemically setting cements (zinc phosphate cement, luting glass-ionomer cement, restorative glass-ionomer cement, and zinc

Effect of Powder Grinding on Hydroxyapatite Formation in a Polymeric Calcium Phosphate Cement Prepared from Tetracalcium Phosphate and Poly[Methyl Vinyl Ether-Maleic Acid]

November 1, 1998
Author(s)
Y Matsuya, S Matsuya, Joseph M. Antonucci, S. Takagi, Laurence C. Chow, A Akamine
The primary aim of this study was to determine if cement based on poly(methyl vinyl ether-maleic acid) (PMVE-Ma) and tetracalcium phosphate (TTCP) resulted in hydroxyapatite (OHAp) formation. In addition, the mechanical strength of this type of polymeric

Interface Adhesion of E-Glass Fibers in Model Polyisocyanurate Networks

September 23, 1998
Author(s)
Walter G. McDonough, Gale A. Holmes, R C. Peterson
Recent work examining the nature of the failure process of glass/epoxy specimens in the single fiber fragmentation test showed that the matrix exhibited pronounced non-linear viscoelastic behavior during the test, and that the interfacial shear strength
Displaying 1901 - 1925 of 1936
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