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Displaying 13701 - 13725 of 73929

Occurrence of Antibiotic Residues in Differentially Treated Wastewater and in Reclaimed Water Utilized in Spray Irrigation

June 21, 2017
Author(s)
Prachi Kulkarni, Nathanael David Olson, Greg Raspanti, Rachel F. Rosenberg Goldstein, Shawn G. Gibbs, Amir Sapkota, Amy Sapkota
The objective of this study was to evaluate concentrations of antibiotics in differentially treated wastewater and reclaimed water. Wastewater (from several treatment processes), final effluent and reclaimed water samples (n=72) from four U.S. wastewater

Toward Standardizing Lightweight Cryptography

June 21, 2017
Author(s)
Kerry A. McKay, Larry Feldman, Gregory A. Witte
This bulletin summarizes the information in NISTIR 8114: Report on Lightweight Cryptography which provides an overview of the lightweight cryptography project at NIST and describes plans for the standardization of lightweight cryptography algorithms.

Spin-Analyzed SANS for Soft Matter Applications

June 20, 2017
Author(s)
WangChun Chen, John Barker, Ronald L. Jones, Kathryn Krycka, Shannon Watson, Cedric Victor Lucien Gagnon, T. Perevozchivoka, Paul Butler, Thomas R. Gentile
The small angle neutron scattering (SANS) of nearly Q-independent nuclear spin-incoherent scattering from hydrogen present in most soft matter and biology samples may raise an issue in structure determination in certain soft matter applications. This is

Tip Enhanced Raman Scattering of Graphene

June 20, 2017
Author(s)
Ryan Beams
This article reviews the mechanism of tip enhanced Raman spectroscopy (TERS) and its importance for characterizing graphene. The theoretical foundation of TERS and experimental implementation are discussed. Conventionally, Raman scattering is treated as a

A Testbed to Verify Timing Behavior of Cyber-Physical Systems

June 18, 2017
Author(s)
Aviral Shrivastava, Mohammad Khayatian, Mohammadreza Mehrabian, Hugo A. Andrade, Patricia Derler, Ya-Shian Li-Baboud, Edward Griffor, Marc A. Weiss, John Eidson, Kevin Stanton
Time is a foundational aspect of Cyber-Physical Systems (CPS). Correct time and timing of system events is critical to optimized responsiveness to the environment, in terms of timeliness, accuracy and precision in the knowledge, measurement, prediction

Event Nugget and Event Coreference Annotation

June 17, 2017
Author(s)
Zhiyi Song, Ann Bies, Stephanie Strassel, Teruko Mitamura, Hoa T. Dang, Joe Ellis, Sue Holm, Yakari Yamakawa
In this paper, we describe the event nugget annotation created in support of the pilot Event Nugget Detection evaluation in 2014 and in support of the Event Nugget Detection and TAC KBP open evaluation in 2015. We present the data volume for both training

Simultaneous Neutron and X-Ray Imaging of 3D Kerogen and Fracture Structure in Shales

June 17, 2017
Author(s)
Wei-Shan NMN Chiang, Jacob M LaManna, Daniel S. Hussey, David L. Jacobson, Yun Liu, Jilin Zhang, Daniel T. Georgi, Jin-hong Chen
Hydrocarbon production from shales using horizontal drilling and hydraulic fracturing has been the key development in US energy industry in the past decade and has now become more important globally. Nevertheless, many fundamental problems related to the

A Backscatter-Suppressed Beta Spectrometer

June 16, 2017
Author(s)
Maynard S. Dewey, Taufique Hassan, Fred B. Bateman, Brian Collett, Guillaume Darius, Christina DeAngelis, Gordon L. Jones, Alexander Komives, Alexander Laptev, Michael Mendenhall, Jeffrey S. Nico, George Noid, Ed Stephenson, Fred Wietfeldt, Isaac Stern, Bob Trull
Backscatter of electrons from a beta spectrometer, with incomplete energy deposition, can lead to undesirable effects in many types of experiments. We present and discuss the design and operation of a backscatter-suppressed beta spectrometer that was

A pulsed scalar optically-pumped magnetometer

June 16, 2017
Author(s)
Vladislav P. Gerginov, Sean P. Krzyzewski, Svenja A. Knappe
A scalar magnetic field sensor based on 87Rb vapor millimeter-size cell is described. The magnetometer uses co-propagating pump/probe laser beam, amplitude modulation of the pump beam and non-demolition polarization rotation detection of the probe beam

High-Field Magnetization and Magnetic Phase Diagram of a-Cu 2 V 2 O 7

June 16, 2017
Author(s)
G. Gitgeatpong, M. Suewattana, Shiwei Zhang, A. Miyake, M. Tokunaga, P. Chanlert, N. Kurita, H. Tanaka, T. J. Sato, Yang Zhao, K. Matan
High-field magnetization of the spin-1/2 antiferromagnet α-Cu 2V 2O 7 was measured in pulsed magnetic fields of up to 56 T in order to study its magnetic phase diagram. When the field was applied along the easy axis (the a-axis), two distinct transitions

Normal-phase liquid chromatography retention behavior of polycyclic aromatic hydrocarbon and their methyl-substituted derivatives on an aminopropyl stationary phase

June 16, 2017
Author(s)
Walter Wilson, Hugh Hayes, Lane Sander, Andres D. Campiglia, Stephen Wise
Retention indices for 124 polycyclic aromatic hydrocarbons (PAHs) and 62 methyl-substituted (Me-) PAHs were determined using normal-phase liquid chromatography (NPLC) on a aminopropyl (NH2) stationary phase. PAH retention behavior on the NH2 phase is

Value Assignment of Vitamin D Metabolites in Vitamin D Standardization Program (VDSP) Serum Samples

June 16, 2017
Author(s)
Karen W. Phinney, Johanna Camara, Susan Tai, Lane C. Sander, Stephen A. Wise, Linde A. De Grande, Linda M. Thienpont, Antonio M. Possolo, Blaza Toman, Christopher T. Sempos, J. M. Betz, Paul M. Coates
Assay variability has been cited as an obstacle to establishing optimal vitamin D exposure. As part of the Vitamin D Standardization Program (VDSP) effort to standardize the measurement of total 25(OH)D, value assignment of total 25(OH)D in 50 single donor

A Flexible-Robust Metal-Organic Framework for Efficient Removal of Propyne from Propylene

June 15, 2017
Author(s)
Libo Li, Rui-Baio Lin, Rajamani Krishna, Xiaoqing Wang, Bin Li, Hui Wu, Jinping Li, Wei Zhou, Banglin Chen
The removal of trace amount of propyne from propylene is critical for the production of polymer-grade propylene. We herein report the first example of metal-organic frameworks of flexible-robust nature for the efficient propyne/propylene separation. The

Calibration of spectral responsivity of IR detectors in the range from 0.6 mm to 24 mm

June 15, 2017
Author(s)
Vyacheslav B. Podobedov, George P. Eppeldauer, Leonard M. Hanssen, Thomas C. Larason
We report the upgraded performance of the National Institute of Standards and Technology (NIST) facility for spectral responsivity calibrations of infrared (IR) detectors in both radiant power and irradiance measurement modes. The extension of the

Optimized Separating Acetylene from Carbon Dioxide and Ethylene in a Microporous Material

June 15, 2017
Author(s)
Rui-Biao Lin, Libo Li, Hui Wu, Hadi Arman, Bin Li, Rong-Guang Lin, Wei Zhou, Banglin Chen
Selective separation of acetylene (C 2Hd2^)from carbon dioxide (CO 2) or ethylene (C 2H 4) needs specific porous materials whose pores can realize sieving effects while pore surfaces can differentiate their recognitions for these molecules of similar
Displaying 13701 - 13725 of 73929
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