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Charlotte Wehner, Bradley Shirley, Garrett Mathesen, Julian Merrick, Brandon Weatherford and Emilio Alessandro Nanni
The manufacturing of active RF devices like klystrons is dominated by expensive and time-consuming cycles of machining and brazing. In this article, we characterize the RF properties of X-band klystron cavities and an integrated circuit manufactured with...
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Garrett Mathesen, Charlotte Wehner, Julian Merrick, Bradley Shirley, Ronald Agustsson, Robert Berry, Amirari Diego and Emilio Nanni
Additive manufacturing is a versatile technique that shows promise in providing quick and dynamic manufacturing for complex engineering problems. Research has been ongoing into the use of additive manufacturing for potential applications in radiofrequenc...
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Samantha L. Eaves, Garrett Staines, Genevra Harker-Klime?, Margaret Pinza and Simon Geerlofs
Uncertainty surrounding the potential environmental impacts of marine energy (ME) has resulted in extensive and expensive environmental monitoring requirements for ME deployments. Recently, there have been more ME deployments and associated environmental...
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Muhammad Saleem, Javed Iqbal, Zongbo Shi, Scott H. Garrett and Munir H. Shah
Although fish are often recommended as a component of a healthy diet, the environmental accumulation of heavy metals in many fish species has been of considerable concern for those weighing the nutritional health benefits against adverse toxic outcome of...
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Joseph Haxel, Xiaoqin Zang, Jayson Martinez, Brian Polagye, Garrett Staines, Zhiqun Daniel Deng, Martin Wosnik and Patrick O?Byrne
Acoustic emissions from current energy converters remain an environmental concern for regulators because of their potential effects on marine life and uncertainties about their effects stemming from a lack of sufficient observational data. Several recent...
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Garrett J. Staines, Robert P. Mueller, Andrew C. Seitz, Mark D. Evans, Patrick W. O?Byrne and Martin Wosnik
A diversified energy portfolio may include marine energy in the form of current energy converters (CECs) such as tidal or in-river turbines. New technology development in the research stage typically requires monitoring for environmental effects. A signi...
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Caroline E. Reilly, Julia Larson, Alicia M. Amerson, Garrett J. Staines, Joseph H. Haxel and Paul Morgan Pattison
Marine energy is poised to become an important renewable energy contributor for the U.S., but widespread deployment of the technology hinges on its benefits outweighing the potential ecological impacts. One stressor marine energy installations introduce ...
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Georg Ehlers, Morris L. Crow, Yacouba Diawara, Franz X. Gallmeier, Xiaosong Geng, Garrett E. Granroth, Raymond D. Gregory, Fahima F. Islam, Robert O. Knudson IV, Fankang Li, Matthew S. Loyd and Bogdan Vacaliuc
This article reviews some current trends that can be observed in the development of neutron scattering instrument technologies. While the number of neutron scattering facilities worldwide and the number of beam days they offer are largely stable, their s...
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George L. Vourlitis, Emma Lousie van der Veen, Sebastian Cangahuala, Garrett Jaeger, Colin Jensen, Cinzia Fissore, Eric M. Wood, Joel K. Abraham, Kevin S. Whittemore, Elijah Slaven, Dustin VanOverbeke, James Blauth, Elizabeth Braker, Nina Karnovsky and Wallace M. Meyer III
Urban landscaping conversions can alter decomposition processes and soil respiration, making it difficult to forecast regional CO2 emissions. Here we explore rates of initial mass loss and net nitrogen (N) mineralization in natural and four common urban ...
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Diego Aedo,Daniel Melnick,Ed Garrett,Mario Pino
Pág. 125 - 152
At Chaihuín marsh, south of Valdivia (39°56? S/73°33? W), a sand bed was deposited during the 1960 earthquake. The aim of this study is to map the 1960 tsunami deposit in detail and to associate earlier sand layers with past tsunamis. Geologic field mapp...
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