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Displaying 1051 - 1075 of 1184

Enhanced strength of additively manufactured Inconel 718 by means of a simplified heat treatment strategy

October 27, 2023
Author(s)
Jake Benzing, Nicholas Derimow, Orion Kafka, Nik Hrabe, Philipp Schumacher, Don Godfrey, Chad Beamer, Priya Pathare, Jay Carroll, Ping Lu, Isaiah Trujillo, Frank DelRio
This study simplified the heat treatment route and reduced the post-processing burden for laser powder bed fusion IN718 (a nickel-based superalloy). The tailored route retained advantageous microstructures and improved tensile strength when compared to the

Comparative study of multiwall carbon nanotube nanocomposites by Raman, SEM, and XPS measurement techniques

March 3, 2021
Author(s)
Yanmei Piao, Vipin Tondare, Chelsea S. Davis, Justin Gorham, Elijah Petersen, Jeffrey W. Gilman, Keana Scott, Andras Vladar, Angela R. Hight Walker
Substantial ongoing research efforts are investigating the production of novel composite material enhanced by the incorporation of nanomaterial fillers such as multiwall carbon nanotubes (MWCNTs). While the addition of MWCNTs have been shown to improve the

Demonstration of Athena X-IFU Compatible 40-Row Time-Division-Multiplexed Readout

March 19, 2019
Author(s)
Malcolm S. Durkin, Joseph S. Adams, Simon R. Bandler, James A. Chervenak, Saptarshi Chaudhuri, Carl S. Dawson, Edward V. Denison, William B. Doriese, Shannon M. Duff, F. M. Finkbeiner, C. T. FitzGerald, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kent D. Irwin, Young I. Joe, R. L. Kelley, Caroline A. Kilbourne, A. R. Miniussi, Kelsey M. Morgan, Galen C. O'Neil, Christine G. Pappas, F. S. Porter, Carl D. Reintsema, David A. Rudman, Kazuhiro Sakai, Stephen J. Smith, Robert W. Stevens, Daniel S. Swetz, Paul Szypryt, Joel N. Ullom, Leila R. Vale, N. Wakeham, Joel C. Weber, B. A. Young
Time-division multiplexing (TDM) is the backup readout technology for the X-ray Integral Field Unit (X-IFU), a 3168-pixel X-ray transition-edge sensor (TES) array that will provide imaging spectroscopy for european space agency's Athena satellite mission

A status of temporal trends of persistent organic pollutants in Arctic biota

February 1, 2019
Author(s)
Frank Riget, Anders Bignert, Birgit Braune, Maria Dam, Rune Dietz, Marlene Evans, Norman Green, Helga Gunnlaugsdottir, Katrin S. Hoydal, John Kucklick, Robert Letcher, Derek Muir, Stacy Schuur, Christian Sonne, Stern Gary, Gregg Tomy, Katrin Vorkamp, Simon Wilson
More than 1000 time-series of persistent organic pollutants (POPs) in Arctic biota from marine and freshwater ecosystems some extending back to the beginning of 1980s were analyzed using a robust statistical method. The Arctic area encompassed extended

Gapped and Gapless Short-Range-Ordered Magnetic States with (1/2,1/2,1/2) Wave Vectors in the Pyrochlore Magnet Tb 2+x Ti 2-X O 7+d

December 10, 2015
Author(s)
E. Kermarrec, D. D. Maharaj, J. Gaudet, K. Fritsch, D. Pomaranski, J. B. Kycia, Yiming Qiu, John R. Copley, M. M. P. Couchman, A. O. R. Morningstar, H. A. Dabkowska, B. D. Gaulin
… of the py- rochlore antiferromagnet Tb 2+x Ti 2¿x O 7+δ have shown a strong sensitivity to the precise Tb con- … We have grown single crystal samples of Tb d2+x^Ti 2¿x O 7+δ, with approximate composition x = ¿0.001,+0.0042, and … field cooled conditions are robust features of Tb 2 Ti 2 O 7 , and are not correlated with the presence or absence of …

Conductance Hysteresis in the Voltage-Dependent Anion Channel

September 1, 2015
Author(s)
Shay M. Rappaport, Oscar Teijido, David Hoogerheide, Tatiana K. Rostovtseva, Alexander M. Berezhkovskii, Sergey M. Bezrukov
In contrast to the voltage gating of ion-selective channels of electrophysiology, the mechanisms of voltage sensitivity of ¿large¿ beta-barrel channels remain obscure, even at the conceptual level. Here we study hysteresis in the conductance response of

Bubble Nucleation of Highly Superheated Water on Thin Film Platinum Films supported by SiN Membranes using a Low-Noise Bridge Circuit

December 1, 2014
Author(s)
Eric J. Ching, Michael J. Carrier, C. T. Avedisian, James R. Young, Bruce R. Land, Richard E. Cavicchi
This study describes the use of stress-minimized thin film platinum (Pt) membrane configurations (200 nm thick, 150 μm long, 10 μm wide) for promoting bubble nucleation of water near its superheat limit. The membrane designs consist of Pt films deposited

Thermochemistry of alpha-D-xylose(cr)

December 4, 2012
Author(s)
Robert N. Goldberg, Manuel A. Ribeiro da Silva, Maria D. Ribeiro da Silva, Ana I. Lobo Ferreira, Quan Shi, Brian F. Woodfield
The thermochemistry of alpha-D-xylose(cr) was studied by means of oxygen bomb calorimetry and a Physical Property Measurement System (PPMS) in zero magnetic field. The sample of -D-xylose(cr) used in this study was one well-characterized by HPLC, Karl
Displaying 1051 - 1075 of 1184
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