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Displaying 46651 - 46675 of 143831

ASHRAE Standard 62.2: What is it, whats new, and whos using it

March 25, 2011
Author(s)
Steven J. Emmerich
Readers of the November 2010 IAQ Applications column by Bud Offermann learned about a large, residential IAQ study that highlighted the importance of mechanical ventilation in U.S. homes. ASHRAE Standard 62.2-2010 Ventilation and Acceptable Indoor Air

Characterization of an actively linearized ultra-broadband chirp laser with a fiber-laser optical frequency comb

March 25, 2011
Author(s)
Zeb W. Barber, Jason Dahl, Peter Roos, Randy Reibel, Nathan Greenfield, Fabrizio R. Giorgetta, Ian R. Coddington, Nathan R. Newbury
The optical frequency sweep of an actively linearized, ultra-broadband, chirped laser source is characterized through optical heterodyne detection against fiber-laser frequency combs. Frequency sweeps were measured over approximately 4.7 THz bandwidths

CONTINUOUS FLOW ENZYME-CATALYZED POLYMERIZATION IN A MICROREACTOR

March 25, 2011
Author(s)
Santanu S. Kundu, Atul S. Bhangale, William E. Wallace, Kathleen M. Flynn, Charles M. Guttman, Richard Gross, Kathryn L. Beers
Enzymes immobilized on solid supports are increasingly used for chemical transformation because the process is greener and sustainable. Here we use microreactors to study enzyme catalyzed ring opening polymerization of -caprolactone to polycaprolactone. A

Modeling the transfer of line edge roughness from an EUV mask to the wafer

March 25, 2011
Author(s)
Gregg M. Gallatin, Patrick Naulleau
Contributions to line edge roughness (LER) from extreme ultraviolet (EUV) masks have recently been shown to be an issue of concern for both the accuracy of current resist evaluation tests as well the ultimate LER requirements for the 22 nm production node

Optics contamination studies in support of high-throughput EUV lithography tools

March 25, 2011
Author(s)
Shannon B. Hill, Fardina Asikin, Lee J. Richter, Steven E. Grantham, Charles S. Tarrio, Thomas B. Lucatorto, Sergiy Yulin, Mark Schurmann, Viatcheslav Nesterenko, Torsten Feigl
We report on optics contamination rates induced by exposure to broad-bandwidth, high-intensity EUV radiation peaked near 8 nm in a new beamline at the NIST synchrotron. The peak intensity of 50 mW/mm2 allows extension of previous investigations of

Effects of Polyethyleneimine-Mediated Functionalization of Multi-Walled Carbon Nanotubes on Earthworm Bioaccumulation and Sorption by Soils

March 24, 2011
Author(s)
Elijah J. Petersen, Roger A. Pinto, Liwen Zheng, Qingguo Huang, Peter E. Landrum, Walter J. Weber
Carbon nanotubes (CNTs) are often modified for their different intended application potentials to enhance their aqueous stability or change properties such as their surface charge. Such changes may also profoundly impact their environmental behaviors. We
Displaying 46651 - 46675 of 143831
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