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Search Publications

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Displaying 12051 - 12075 of 73697

A Critical Comparison of 3D Experiments and Simulations of Tricalcium Silicate Hydration

March 13, 2018
Author(s)
Jeffrey W. Bullard, John G. Hagedorn, Tyler Ley, Qinang Hu, Wesley N. Griffin, Judith E. Terrill
Advances in nano-computed X-ray tomography (nCT), nano X-ray fluorescence spectrometry (nXRF), and high-performance computing have now enabled the first ever direct comparison between observations of three-dimensional nanoscale microstructure evolution

Local spin-wave dispersion and damping in thin yttrium-iron-garnet films

March 13, 2018
Author(s)
Rouven Dreyer, Niklas Liebing, Eric R. Edwards, Georg Woltersdorf
Using ultrafast magneto-optic sampling microscopy, we investigate the spin-wave dispersion and spin-wave damping in yttrium-iron-garnet films. With the aid of the inhomogeneous magnetic field generated by coplanar waveguides spin-waves are excited at a

Selective Hydride Occupation in BaVO 3-x H x (0.3 less than or equal to}xless than or equal to}0.8) with Face- and Corner-Shared Octahedra

March 13, 2018
Author(s)
Takafumi Yamamoto, Kazuki Shitara, Shunsaku Kitagawa, Akihide Kuwabara, Masahiro Kuroe, Kenji Ishida, Masayuki Ochi, Kazuhiko Kuroki, Kotaro Fujii, Masatomo Yashima, Craig Brown, Hiroshi Takatsu, Tassel Cedric, Hiroshi Kageyama
A growing number of transition metal oxyhydrides have recently been reported, but they are all confined to perovskite-based structures with corner-shared octahedra. Using high pressure synthesis, we have obtained vanadium oxhydrides BaVO 3-xH x(0.3less

Towards Traceable Transient Pressure Metrology

March 13, 2018
Author(s)
Douglas A. Olson, Haijun Liu, Zeeshan Ahmed, Kevin O. Douglass
Here we detail our progress in developing the infrastructure for traceable transient measurements of pressure and temperature. Towards that end, we have built and characterized a dual diaphragm shock tube that allows us to achieve shock amplitude

Unravelling Solid-State Redox Chemistry in Li 1.3 Nb 0.3 Mn 0.4 O 2 Single-Crystal Cathode Material

March 13, 2018
Author(s)
Wang Hay Kan, Dongchang Chen, Joseph K. Papp, Alpesh Khushalchand Shukla, Ashfia Huq, Craig Brown, Bryan D. McCloskey, Guoying Chen
Recent reports on high capacities delivered by Li-excess transition-metal oxide cathodes have triggered intense interest in utilizing reversible oxygen redox for high-energy battery applications. In order to control oxygen electrochemical activities

A Soot Deposition Gauge for Fire Measurements

March 12, 2018
Author(s)
Amy E. Mensch, Thomas G. Cleary
The goal of this exploratory project is to demonstrate the feasibility of a conductometric measurement to determine the time-resolved soot deposition on surfaces in fire environments. Quantitative soot deposition data enabled by this measurement method is

Characterization of Stove Top Cooking Oil Fires

March 12, 2018
Author(s)
Anthony P. Hamins, Sung C. Kim, Daniel Madrzykowski
A series of cooking fire experiments were conducted by the National Institute of Standards and Technology (NIST) to examine the hazard associated with cooking oil fires. First, a series of experiments were conducted on a free-standing stove situated in the

Contextualizing Manufacturing Data for Lifecycle Decision Making

March 12, 2018
Author(s)
William Z. Bernstein, Thomas D. Hedberg, Moneer M. Helu, Allison Barnard Feeney
Product Lifecycle Management (PLM) systems manage the flow of data about the product and the processes that are used throughout the product's lifecycle so that the right information is delivered at the right time to the right systems. Manufacturing in the

Identification and Quantification of Aflatoxin Guanine and FapyGuanine Adducts in Mouse Liver invivo by LC-MS/MS Isotope Dilution

March 11, 2018
Author(s)
Erdem Coskun, Vladimir Vartanian, Irina G. Minko, Onur Erdem, Pawel Jaruga, Patricia Egner, John D. Groopman
Dietary exposures to aflatoxin contaminated food is one of the major contributions to human hepatocellular carcinomas (HCCs) which accounts for over 700.000 deaths per year, especially in highly populated developing and underdeveloped countries. Aflatoxin

Asymmetric and partial injection locking of a three-terminal spin-torque oscillator

March 9, 2018
Author(s)
Emilie M. Jue, Matthew R. Pufall, William H. Rippard
We measure the injection locking of a three-terminal spin-torque oscillator (STO) excited by a spin-orbit torque. The device consists of a magnetic tunnel junction on top of a Pt wire. A DC and an AC current are applied through the Pt wire to respectively

Density and Viscosity Measurements of a 50/50 JP-10 + Terpene Mixture

March 9, 2018
Author(s)
Stephanie L. Outcalt, Tara J. Fortin
Densities of a 50/50 by volume mixture of JP-10 + a turpentine dimer fuel (TDF) have been measured in the compressed-liquid state from 270 K to 470 K, and 0.5 MPa to 45 MPa and at ambient pressure from 263.15 K to 373.15 K. Ambient pressure dynamic

A Fast Recursive Algorithm For Spectrum Tracking in Power Grid Systems

March 8, 2018
Author(s)
Hamid Gharavi
A major challenge for future wide area measurement systems is how to efficiently monitor and control the power system, which requires accurate and real-time tracking of the phase, frequency, and Power Factor (PF) of the system. The presence of inter and

Approaches to the Optimal Nonlinear Analysis of Microcalorimeter Pulses

March 8, 2018
Author(s)
Joseph W. Fowler, Christine G. Pappas, Bradley K. Alpert, William B. Doriese, Galen C. O'Neil, Joel N. Ullom, Daniel S. Swetz
We consider how to analyze microcalorimeter pulses for quantities that are nonlinear in the data, while preserving the signal-to-noise advantages of linear optimal filtering. We apply the approach to compute the electrothermal feedback energy deficit (the

Cooperative Vehicular Networking: A Survey

March 8, 2018
Author(s)
Hamid Gharavi
With the remarkable progress of cooperative communication technology in recent years, its transformation to vehicular networking is gaining momentum. Such a transformation has brought a new research challenge in facing the realization of cooperative

Experimental scattering matrix for lunar regolith simulant JSC-1A at visible wavelengths

March 8, 2018
Author(s)
Edward J. Garboczi, Ann C. Chiaramonti Debay, Thomas V. Lafarge, O Munoz, J Escobar-Cerezo, D Guirado, JC Gomez-Martin, Jay Goguen, F Moreno
We present the experimental scattering matrix as a function of the scattering angle of the lunar soil simulant JSC-1A. The measurements were performed at 488 nm, 520 nm and 647 nm, covering the range of scattering angles from 3o to 177o. The size

Millimeter-Wave Polarimeters Using Kinetic Inductance Detectors for TolTEC and Beyond

March 8, 2018
Author(s)
Jason Austermann, James A. Beall, Sean A. Bryan, Bradley Dober, Jiansong Gao, Gene C. Hilton, Johannes Hubmayr, Phillip Mauskopf, Christopher M. McKenney, S M. Simon, Joel Ullom, Michael Vissers, G W. Wilson
Microwave kinetic inductance detectors (MKIDs) provide a compelling path forward to the large-format polarimeter, imaging, and spectrometer arrays needed for next-generation experiments in millimeter-wave cosmology and astronomy. We describe the
Displaying 12051 - 12075 of 73697
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