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Topic Area: Environment/Climate

Displaying records 91 to 100 of 445 records.
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91. Design, Fabrication and Implementation of Thermally-Driven Outdoor Testing Devices for Building Joint Sealants
Topic: Environment/Climate
Published: 2/23/2011
Authors: Christopher C White, Kar T. Tan, Emmett P O'Brien, Donald Lee Hunston, R. S. Williams
Abstract: The paper describes the development, implementation and testing of two thermally driven outdoor exposure instruments. These devices are unique in their ability to impose thermally driven strain while monitoring the resulting stress and displacement f ...

92. The Role of Service Life Prediction In Sustainability Determinations
Topic: Environment/Climate
Published: 2/14/2011
Authors: Christopher C White, Kar T. Tan, Donald Lee Hunston
Abstract: Sustainability calculations are based on assumptions about the energy required to produce, transport place in-service items. A critical component of these calculations is the expected service life of the material, component or system. Estimates of t ...

93. Directed 2D-to-3D pattern transfer method for controlled fabrication of topologically complex three- dimensional nanostructures in silicon
Topic: Environment/Climate
Published: 2/1/2011
Authors: Konrad Rykaczewski, Owen J. Hildreth, Ching P. Wong, Andrei G. Fedorov, John Henry j Scott
Abstract: A process allowing for control over the 3D motion of catalyst nanostructures during Metal-assisted Chemical Etching by their local pinning prior to etching is developed. Topologically complex 3D structures that are partially located within the et ...

94. Methylmercury photodegradation influenced by sea ice cover in Arctic marine ecosystems
Topic: Environment/Climate
Published: 1/16/2011
Authors: David Point, J E Sonke, Russell D Day, David G Roseneau, Keith A. Hobson, Stacy S Vander-Pol, Amanda J Moors, Rebecca S Pugh, Olivier F. X. Donard, Paul R Becker
Abstract: Despite two decades of research on mercury in northern environments, we do not fully understand the high levels of this pollutant in Arctic Biota. The presumption that global anthropogenic mercury emissions and Arctic atmospheric mercury depletion ev ...

95. A Mathematical Model of Atmospheric Retention of Man-made CO_2 Emissions
Topic: Environment/Climate
Published: 12/21/2010
Author: Bert W Rust
Abstract: Rust and Thijsse [Proc. CSC'07 (2007) pp. 10-16], [CiSE, Vol. 10 (2008) pp. 49-59] have shown that global annual average temperature anomalies T(t) vary linearly with atmospheric CO_2 concentrations c(t). The c(t) can be related to man-made CO_2 emi ...

96. WSQ Problem with Two-Thumb Captures from Large Platen Live-Scan Devices
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7746
Topic: Environment/Climate
Published: 11/18/2010
Author: Craig I Watson
Abstract: This paper investigates an issue with the Wavelet Scalar Quantization (WSQ) compression algorithm which causes severe degradation of the compressed image. The problem was first noticed when compressing the two-thumb images from live-scan identificati ...

Topic: Environment/Climate
Published: 11/7/2010
Authors: David W. Esh, Jacob Philip, Kenneth Alan Snyder
Abstract: The use of cementitious materials has been proposed in a variety of waste management systems because these materials can have a variety of desirable performance characteristics: hydraulic isolation, chemical isolation, structural stability. Cementit ...

98. Thermochemistry of Ammonium Nitrate, NH4NO3, in the Gas Phase
Topic: Environment/Climate
Published: 10/7/2010
Author: Karl K Irikura
Abstract: Hildenbrand and coworkers have shown recently that the vapor above solid ammonium nitrate includes molecules of NH4NO3, not only NH3 and HNO3 as previously believed. Their measurements led to thermochemical values that imply an enthalpy change of D2 ...

99. Spatially resolved height response of phase-shifting interferometers measured using a patterned mirror with varying spatial frequency
Topic: Environment/Climate
Published: 9/1/2010
Authors: JiYoung Chu, Quandou Wang, John Lehan, Ulf Griesmann
Abstract: In the performance evaluation of phase-shifting interferometers for figure metrology, the height response, or height transfer function, is rarely taken into consideration, because in most applications smooth surfaces are measured and only the lowest ...

100. Variability in the Geometric Accuracy of Additively Manufactured Test Parts
Topic: Environment/Climate
Published: 8/9/2010
Authors: April Lynne Cooke, Johannes A Soons
Abstract: Results of a study on the variability in the geometric accuracy of a metal test part manufactured by several service providers using either electron beam or laser based powder bed thermal fusion processes are described. The part was a circle-diamond- ...

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