U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 18176 - 18200 of 74179

Histone H3 Ser57 and Thr58 Phosphorylation in 5XFAD Mouse Brain

June 20, 2015
Author(s)
Kyle W. Anderson, Illarion V. Turko, Natalia Mast, Irina A. Pikuleva
Alzheimer’s disease (AD) is the most common neurodegenerative disorder, yet it is poorly understood. Currently, there is no treatment to delay onset or slow progression of AD. Epigenetics of AD is a growing field that has gained interest due to the

CALIBRATION AND CHARACTERIZATION OF A SEAPRISM RADIOMETER FOR AERONET-OC

June 19, 2015
Author(s)
Bettye C. Johnson, Steven W. Brown, John T. Woodward IV, Keith R. Lykke, Giuseppe Zibordi
The global Aerosol Robotic Network for Ocean Color (AERONET-OC) program utilizes AERONET CE-318 sun photometers (termed “SeaPRISMs”) modified for in-air observations of ocean waters situated on oil drilling rigs, off-shore lighthouses, or other platforms

Flexible metal-organic framework compounds: In situ studies for selective CO2 capture

June 19, 2015
Author(s)
Andrew J. Allen, Laura Espinal, Winnie K. Wong-Ng, Wendy Queen, Craig Brown, Steven R. Kline, Kristi L. Kauffman, Jeffrey T. Culp
Results from in situ experiments are presented to correlate carbon capture with dynamic structural changes in two flexible metal-organic framework (MOF) materials: porous coordination polymers (PCPs) exhibiting promising carbon dioxide adsorption

Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn 5

June 19, 2015
Author(s)
C. Stock, Jose Rodriguez Rivera, Karin Schmalzl, E. E. Rodriguez, A. Stunault, C. Petrovic
CeRhIn 5 is an itinerant magnet where the Ce 3+ spins order in a simple spiral phase caused by competing exchange interactions. We investigate the spin excitations and observe sharp spin- waves parameterized by a nearest neighbor exchange J RKKY =0.88 ±0

Towards a Periodic Table of Bugs

June 19, 2015
Author(s)
Paul E. Black, Irena V. Bojanova, Yaacov Yesha, Yan Wu
High-confidence systems must not be vulnerable to attacks that reduce the security, reliability, or availability of the system as a whole. One collection of vulnerabilities is the Common Weakness Enumeration (CWE). It represents a considerable community

Cardholder Authentication for the PIV Digital Signature Key

June 18, 2015
Author(s)
William Polk, Hildegard Ferraiolo, David Cooper
FIPS 201-2 requires explicit user action by the Personal Identity Verification (PIV) cardholder as a condition for use of the digital signature key stored on the card. This document clarifies the requirement for explicit user action to encourage the

Gauge matters: Observing the vortex-nucleation transition in a Bose condensate

June 18, 2015
Author(s)
Ian B. Spielman, LeBlanc Lindsey, Karina Jimenez-Garcia, Ross Williams, Matthew Beeler, William D. Phillips
The order parameter of a quantum-coherent many-body system includes one or more phase degrees of freedom, which, owing to the phase information's relationship to velocity, can be accessed using time-of-flight (TOF) imaging. Here, trapped Bose-Einstein

Mesomorphic Pathway in Early Stage Crystallization of Polyethylene

June 18, 2015
Author(s)
Kalman D. Migler, Angela R. Hight Walker, Anthony P. Kotula
The kinetic pathway by which a molten polymer transforms into a multi-length scale semi-crystalline structure upon cooling is an unsolved problem in polymer physics, yet it is critical to the processing, properties and ultimate performance of these

Direct Measurement of Trace Polycyclic Aromatic Hydrocarbons in Diesel Fuel with 1H and 13C NMR Spectroscopy: Effect of PAH Content on Fuel Lubricity

June 17, 2015
Author(s)
Peter Y. Hsieh, Jason Widegren, Andrew Slifka, Andrew J. Hagen, Ronald A. Rorrer
Surface-active trace compounds present in diesel fuels protect pumps and injectors against premature wear through boundary lubrication. Due to the vast number of hydrocarbon compounds found in petroleum distillate fuels, it is difficult to measure the

Economic impact of applying high strength steels in hydrogen gas pipelines

June 17, 2015
Author(s)
Jeffrey W. Sowards, James R. Fekete, Robert L. Amaro
Pipeline steel will likely be employed extensively to transport gaseous hydrogen in support of a future clean energy economy. To date, a hydrogen-specific cost analysis of pipeline installation has not been produced. This paper performs several cost

Strong asymmetric charge carrier dependence in inelastic electron tunneling spectroscopy of graphene phonons

June 16, 2015
Author(s)
Donat F. Natterer, Yue Y. Zhao, Jonathan E. Wyrick, Yang-Hao Chan, Wen-Ying Ruan, Mei-Yin Chou, Kenji Watanabe, Takashi Taniguchi, Nikolai B. Zhitenev, Joseph A. Stroscio
The observation of phonons in graphene by inelastic electron tunneling spectroscopy has been met with limited success in previous measurements arising from weak signals and other spectral features which inhibit a clear distinction between phonons and

Analysis of Several High-Resolution Bands of Spiropentane, C5H8

June 15, 2015
Author(s)
Alfons Weber, A. Maki, J. E. Price, Jared Harzan, J. W. Nibler, T. Masiello, T Blake
The high resolution absorption spectrum of spiropentane (C5H8) from 200 cm-1 to 4000 cm−1 has been measured and a detailed analysis is presented for eight bands in the region from 700 cm−1 to 2200 cm−1. Two fundamental perpendicular bands were analyzed

Damage Development in Cementitious Materials Exposed to MgCl2 Deicing Salt

June 15, 2015
Author(s)
Yaghoob Farnam, Andrew Wiese, Dale P. Bentz, Jeffrey M. Davis, Jason Weiss
MgCl2 is used in deicing applications due to its capability to depress freezing temperatures to a lower point than other salts like NaCl. The constituents of concrete (i.e., pores solution, calcium hydroxide, aluminate phases, and calcium silicate hydrate
Displaying 18176 - 18200 of 74179
Was this page helpful?