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Displaying 9576 - 9600 of 73755

Electric Field Effect on Short-Range Polar Order in a Relaxor Ferroelectric System

July 30, 2019
Author(s)
Zhijun Xu, Fei Li, Shujun Zhang, Christopher Stock, Jun Luo, Peter M. Gehring, Guangyong Xu
Short-range polar orders in the relaxor ferroelectric material PbMg 1/2Nb 2/3O 3-28%PbTiO 3 (PMN-28PT) have been studied using neutron diffuse scattering. An external electric field along [110] direction can affect the diffuse scattering in the low

Liquid chromatography tandem mass spectrometry for the quantitation of steroid hormone profiles in blubber from stranded humpback whales (Megaptera novaeangliae)

July 30, 2019
Author(s)
Greta Dalle Luche, Susan Bengston Nash, John Kucklick, Fletcher M. Mingramm, Ashley Russell
Marine mammal blubber is known to have quantifiable concentrations of steroid hormones and is increasingly chosen as a matrix for the detection of these reproductive and stress biomarkers. Steroid hormones act through complex cascades, often in concert

Multifactor Authentication for E-Commerce

July 30, 2019
Author(s)
William D. Newhouse
As retailers in the United States have adopted chip-and-signature and chip-and-PIN (personal identification number) point-of-sale (POS) security measures, there have been increases in fraudulent online card-not-present (CNP) electronic commerce (e-commerce

Towards Sustainable Environmental Quality: Priority Research Questions for North America

July 30, 2019
Author(s)
Anne Fairbrother, Derek Muir, Keith Solomon, Gerald Ankley, Murray Rudd, Alistair Boxall, William Adams, Jennifer Apell, Bonnie Blalock, Sarah Bowman, Linda Campbell, George Cobb, Kristin Connors, David Dreier, Marlene Evans, Carol Henry, Robert Hoke, Magali Houde, Stephen Klaine, Rebecca Klaper, Sigrun Kullik, Roman Lanno, Charles Meyer, Elias Oziolor, Mary Ann Ottinger, Elijah Petersen, Helen Poynton, Pamela Rice, Gabriela Rodriguez-Fuentes, Alan Samel, Joseph Shaw, Jeffrey Steevens, Tim Verslycke, Scott Weir, Peter Wilson, Bryan Brooks
Anticipating, identifying and prioritizing strategic needs represent essential activities by research organizations. When these pursuits engage globally important environment and health goals, including the United Nations Sustainable Development Goals

Elastic residual strain and stress measurements and corresponding part deflections of 3D AM builds of IN625 AM-Bench artifacts using neutron diffraction, synchrotron X-ray diffraction, and contour method

July 29, 2019
Author(s)
Thien Q. Phan, Maria Strantza, Michael R. Hill, Thomas H. Gnaupel-Herold, Jarred C. Heigel, Christopher D'Elia, DeWald Adrian, Bjorn Clausen, Darren C. Pagan, J. Y. Peter Ko, Donald W. Brown, Lyle E. Levine
One of the primary barriers for acceptance of additive manufacturing (AM) has been the uncertainty in the performance of AM parts due to residual stresses/strains. The rapid heating and cooling rates, along with the thermal history of the laser melting

Stability of gaseous volatile organic compounds contained in gas cylinders with different internal wall treatments

July 29, 2019
Author(s)
George C. Rhoderick, Christina Cecelski, Walter R. Miller Jr., David Worton, Sergi Moreno, Paul Brewer, Joele Viallon, Faraz Idrees, Philippe Moussay, Yong D. Kim, Dal H. Kim, Sangil Lee, Annarita Baldan, Jianrong Li
Volatile organic compounds (VOCs) are a group of gas-phase compounds present in the atmosphere that affect air quality and Earth's climate. Halocarbons, a subset of this group, are strong greenhouse gases and are linked to stratospheric ozone depletion

Pulse-Driven High-Tc Josephson Junctions for Quantum Voltage Devices

July 28, 2019
Author(s)
Adam C. Weis, Nathan E. Flowers-Jacobs, E Y. Choi, H Li, J C. LeFebvre, Shane Cybart, Stuart Berkowitz, Horst Rogalla, Samuel P. Benz
Josephson junction arrays are the basis for quantum-accurate dc and ac voltage standards, including artificial voltage-noise references used in noise thermometry. I will describe our recent progress towards voltage synthesis using high-transition

DESIGN OF AN INTELLIGENT PYTHON CODE FOR VALIDATING CRACK GROWTH EXPONENT BY MONITORING A CRACK OF ZIG-ZAG SHAPE IN A CRACKED PIPE

July 27, 2019
Author(s)
Jeffrey T. Fong, Pedro V. Marcal, Robert B. Rainsberger, Nathanael A. Heckert, James J. Filliben
When a small crack is detected in a pressure vessel or piping, we can estimate the fatigue life of the vessel or piping by applying the classical law of fracture mechanics for crack growth if we are certain that the crack growth exponent is correct and the

Improving MC/DC and Fault Detection Strength Using Combinatorial Testing

July 25, 2019
Author(s)
D. Richard Kuhn, Raghu N. Kacker
Software, in many different fields and tasks, has played a critical role and even replaced humans to improve efficiency and safety. However, catastrophic consequences can be caused by implementation bugs and design defects. MC/DC (Modified Condition
Displaying 9576 - 9600 of 73755
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