Key physical properties of three dicyanate ester monomers, bisphenol A dicyanate (BADCy), bisphenol E dicyanate (LECy), and the dicyanate of a silicon-containing analogue of bisphenol A (SiMCy) were investigated as a function of cyanurate conversion at conversions ranging from approximately 70% to greater than 90% in order to assess the range of applicability of both traditional and more unusua...

Epoxy resins are used extensively in composite materials for a wide range of engineering applications, including structural components aircraft and spacecraft. The processing fiber-reinforced epoxy structures requires carefully selected heating cooling cycles to fully cure the resin form strong cross-linked networks. To optimize parameters effective monomer cross-linking final product integrity...

The aerospace industry has an issue of disposing waste, unused carbon fiber unidirectional prepreg tapes. This paper explores producing chips using sheet-molding compounding equipment (SMC) for conversion into products via compression molding, which are stronger than traditional glass-reinforced SMC parts due to the and high strength epoxy resin. Without a means convert continuous tape chips, i...

The only therapy with the potential for complete cure of patients with gastroenteropancreatic neuroendocrine tumors is complete surgical excision. Surgical options per se are often dictated by the tumor's site of origin, degree of tumor burden, and overall health or debility of the individual patient. This article considers different options based on the type of tumor and site of origin.

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natural rubber/fiber composites were prepared in a laboratory mixer using new and waste short nylon fiber by a one-step mixing process. fiber loading and bonding agent effects on the microstructure and mechanical properties of the composites were studied. the cure characteristics of composites were investigated by using rheometer. cure and scorching times of the composites decreased while maxim...

background and aims: new dentin bonding agents and techniques have been developed to reduce microleakage and create higher bond strength. this in-vitro study compared the microleakage of three resin-based adhesives versus a gic-based adhesive on class v composite restorations.  materials and methods: class v cavities were prepared on the buccal surfaces of 72 sound premolars, randomly assigned ...

the first zagreb index $m_1$ of a graph $g$ is equal to the sum of squaresof degrees of the vertices of $g$. goubko proved that for trees with $n_1$pendent vertices, $m_1 geq 9,n_1-16$. we show how this result can beextended to hold for any connected graph with cyclomatic number $gamma geq 0$.in addition, graphs with $n$ vertices, $n_1$ pendent vertices, cyclomaticnumber $gamma$, and minimal $m...