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Physical Sciences and Mathematics Commons™

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Western Washington University

2013

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Articles 61 - 63 of 63

Full-Text Articles in Physical Sciences and Mathematics

Characterization Of Coarse Sediment Transport On A Mixed Sand And Gravel Beach: Cherry Point Aquatic Reserve, Blaine, Washington, Meghan E. (Meghan Elizabeth) Weaver Jan 2013

Characterization Of Coarse Sediment Transport On A Mixed Sand And Gravel Beach: Cherry Point Aquatic Reserve, Blaine, Washington, Meghan E. (Meghan Elizabeth) Weaver

WWU Graduate School Collection

This study examines coarse-sediment transport behavior on a mixed sand and gravel (MSG) beach at Cherry Point Aquatic Reserve in Blaine, Washington. Radio Frequency Identifier (RFId) Passive Integrated Transponder (PIT) tags were used to trace large pebbles and cobbles (51 - 129 mm in diameter) between mid-January and early-March, 2012. Transport data were combined with wind, current and water level data recorded by nearby weather stations, as well as wave data collected by an offshore pressure sensor, into a comprehensive data set. Tide, wind and wave parameters were then input into XBeach, a relatively new nearshore numerical model [Roelvink et …

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Metamorphic Evolution Of The Northwest Chelan Block, North Cascades, Washington, Aaron A (Aaron Arthur) Fitts Jan 2013

Metamorphic Evolution Of The Northwest Chelan Block, North Cascades, Washington, Aaron A (Aaron Arthur) Fitts

WWU Graduate School Collection

The Cascades crystalline core (CC) is the fault bound southern extension of the Coast Plutonic Complex, a Cretaceous orogenic welt that forms the northernmost section of the North American Cordillera. Of primary interest in this study is the tectonic history of the Cascade River region in the northwest of CC. The Sibley Creek area of the Cascade River region is a zone of high-grade metamorphic rocks bound by Cretaceous plutons to the north, east, and west and the Tertiary Entiat fault to the south. Analysis of deformed and undeformed granitic plutons in the area could help constrain the absolute ages …

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Silk Fibroin-Based Conducting Polymer Composite Electrodes And Their Use As Electromechanical Actuators, Isabella S. Romero Jan 2013

Silk Fibroin-Based Conducting Polymer Composite Electrodes And Their Use As Electromechanical Actuators, Isabella S. Romero

WWU Graduate School Collection

In order to produce conductive, biocompatible and mechanically robust materials for use in bioelectrical applications, we have developed a new strategy to selectively incorporate poly(pyrrole) (Ppy) into constructs made from silk fibroin. Here, we demonstrate that covalent attachment of negatively charged, hydrophilic sulfonic acid groups to the silk protein can selectively promote pyrrole absorption and polymerization within the modified films to form a conductive, interpenetrating network of Ppy and silk that is incapable of delamination. To further increase the conductivity and long-term stability of the Ppy network, a variety of small molecule sulfonic acid dopants were utilized and the properties …

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