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Displaying 8076 - 8100 of 143816

Two Stage Forming: Experimental and FE Analysis

October 12, 2021
Author(s)
M C. Oliveira, A J. Baptista, J L. Alves, L F. Menezes, D E. Green, Thomas H. Gnaupel-Herold, Mark Iadicola, Timothy J. Foecke, T B. Stoughton
One of the present challenges in sheet metal forming is to simulate sequential production stages, from the initial blank sheet to the final part ready for assembly. In this context, it is fundamental to evaluate the forming characteristics of the materials

Ultrafast Spin Phenomena in Highly Excited N-Doped GaAs

October 12, 2021
Author(s)
R Bratschitsch, Z Chen, Steven T. Cundiff
We perform time-resolved Faraday rotation exeriments on undoped and n-doped GaAs samples at high optical excitation densities. The Faraday rotation signal linearly increases with optical excitation density. The excitation dependence of the electron g

Ultrasonic Melt Temperature Measurement During Extrusion

October 12, 2021
Author(s)
J Shen, Eric Edwards, C L. Thomas, Anthony J. Bur
An ultrasonics sensor, which can be used at polymer processing temperatures, was developed and used to monitor temperature of a polymer extrudate. This was accomplished by establishing a calibration function between the measured ultrasonics velocity and

Understanding Deviations in Lithographic Patterns Near Interfaces: Characterization of Antireflective Coatings (ARC) and the ARC/Resist Interface

October 12, 2021
Author(s)
Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, Daniel A. Fischer, S Sambasivan, Eric K. Lin, Wen-Li Wu, Douglas Guerrero, Yijun Wang, R Puligadda
Interactions between a bottom anti-reflective coating (BARC) and a photo-resist can critically impact lithographic patterns. For example, a lithographic pattern can shrink or spread near a BARC interface, a process called undercutting or footing

Universal RNA Reference Materials for Gene Expression

October 12, 2021
Author(s)
M Cronin, K Ghosh, F Sistare, J Quackenbush, V L. Vilker, C D. O'Connell
A NIST sponsored workshop entitled Metrology and Standards Needs for Gene Expression Technologies: Universal RNA Standards was held on March 28-29, 2003 to define the need for standardization of the biological component of RNA based molecular assays

University Involvement in ATP and Effect on Project Outputs

October 12, 2021
Author(s)
F A. Moris, C Chang, Andrew J. Wang
Universities play a key role in the U.S. innovation system. Universities are engaged in research at the scientific and technological frontier. Private companies may choose to collaborate with universities to gain access to eminent researchers and/or to

Unusual DNA Conformations From Intron 21 of the PKD1 Gene Cause Mutagenesis

October 12, 2021
Author(s)
A Bacolla, A Jaworski, A Larson, J P. Jakupciak, C D. O'Connell, R D. Wells
Intron 21 of the polycystic kidney disease 1 (PKD1) gene contains a 2.5 kbp of purine-pyrimidine asymmetry [poly(R-Y)] predicted to adopt unusual DNA structures (slipped, triplexes, tetraplexes)and proposed to cause mutations in the gene. The poly (R-Y)
Displaying 8076 - 8100 of 143816
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