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Search Publications

NIST Authors in Bold

Displaying 176 - 200 of 287

Vapour Pressure of Diethyl Phthalate

September 11, 2004
Author(s)
Vladimir Rohac, Kvetoslav Ruzicka, Vlastimil Ruzicka, Dzmitry H. Zaitsau, Gennady J. Kabo, Vladimir Diky, Karel Aim
… kJ mol u-1), at T=298.15 K (p=0.099 Pa, delta vap6 uHm=82.09 kJ mol^u-1), and at the normal boiling vaporisation are …

Creep of Lanthanum Gallate

March 1, 2002
Author(s)
William E. Luecke, T R. Armstrong
Strontium- and magnesium-doped lanthanum gallate (LSGM) was deliberately prepared to give A-site deficient non-stoichiometry with compositions (La 0.9Sr 0.1)z(Ga 0.8Mg 0.2)O 3-delta (z =1.0,0.98, and 0.95). Creep tests in four-point 950 C 75 Mpa in air

A proposal to change the leap-second adjustments to UTC

June 3, 2024
Author(s)
Judah Levine, Patrizia TAVELLA
The definition of UTC in 1972 balanced the needs of the time and frequency community for a universal time scale that was traceable to the definition of frequency in the SI system of units with the needs of the astronomical community for a time scale that

On-the-Fly Autonomous Control of Neutron Diffraction via Physics-Informed Bayesian Active Learning

June 1, 2022
Author(s)
Austin McDannald, Matthias Frontzek, Andrew Savici, Mathieu Doucet, Efrain Rodriguez, Kate Meuse, Jessica Opsahl-Ong, Daniel Samarov, Ichiro Takeuchi, William Ratcliff, A. Gilad Kusne
We demonstrate the first live, autonomous control over neutron diffraction experiments by developing and deploying ANDiE: the autonomous neutron diffraction explorer. Neutron scattering is a unique and versatile characterization technique for probing the

Improved Nozzle Manifold for Gas Flow Calibrations

June 20, 2012
Author(s)
Aaron N. Johnson, Chunhui Li, John D. Wright, Gina M. Kline, Christopher J. Crowley
… that reduced the uncertainty of flow calibrations from 0.09 % to as low as 0.074 % for flows of air up to 0.84 kg/s …

Effect of Temperature on Electron Attachment to and Negative Ion States of CCl 2 F 2

November 1, 1998
Author(s)
Yicheng Wang, Loucas G. Christophorou, J. K. Verbrugge
The effect of temperature on electron attachment to dichlorodifluoromethane (CCl 2F 2) has been investigated for temperatures up to 500 K and for mean electron energies from thermal to 1.0 eV using an electron swarm method. The measurements were made in

Atmospheric Retention of Man-made CO 2 Emissions

June 8, 2009
Author(s)
Bert W. Rust
Rust and Thijsse have shown that global annual average temperature anomalies T(t i) vary linearly with atmospheric CO 2 concentrations c(t i). The c(t i) can be related to man-made CO 2 emissions F(t i) by a linear regression model whose solution vector

Primary quantum thermometry of mm-wave blackbody radiation via induced state transfer in Rydberg states of cold atoms

January 23, 2025
Author(s)
Noah Schlossberger, Andrew Rotunno, Stephen Eckel, Eric Norrgard, Dixith Manchaiah, Nikunjkumar Prajapati, Alexandra Artusio-Glimpse, Samuel Berweger, Matthew Simons, Dangka Shylla, William Watterson, Charles Patrick, Adil Meraki, Rajavardhan Talashila, Amanda Younes, David La Mantia, Christopher Holloway
… sensitivity to the fractional temperature uncertainty of 0.09 Hz−1/2, corresponding to 26 K Hz−1/2 at room temperature. …

Observation of Interpenetrated Topology Isomerism for Covalent Organic Frameworks with Atom-Resolution Single Crystal Structures

November 9, 2023
Author(s)
Baoqiu Yu, Wenliang Li, Xiao Wang, Jing-Hong Li, Rui-Biao Lin, Hailong Wang, Xu Ding, Yucheng Jin, Xiya Yang, Hui Wu, Wei Zhou, Jingping Zhang, Jianzhuang Jiang
Rational control and understanding of isomerism are of significance but still remain a great challenge in reticular frameworks, in particular, for covalent organic frameworks (COFs) due to the complicated synthesis and energy factors. Herein, reaction of 3

Empirical Validation of Automated Vulnerability Curation and Characterization

February 28, 2023
Author(s)
Ahmet Okutan, Peter Mell, Medhi Mirakhorli, Igor Khokhlov, Joanna Santos, Danielle Gonzalez, Steven Simmons
Prior research has shown that public vulnerability systems such as US National Vulnerability Database (NVD) rely on a manual, time-consuming, and error-prone process which has led to inconsistencies and delays in releasing final vulnerability results. This

Distribution of Average Aggregate Density from Stir-stressed NISTmAb Protein

March 19, 2022
Author(s)
Richard E. Cavicchi, Laura Philips, Fook Cheong, David Ruffner, Priya Kasimbeg, Wyatt N. Vreeland
Quantifying the heterogeneous nature of protein aggregates is important to understanding the impact aggregates may have on the performance of antibody therapeutics. The spatially averaged density p of aggregates, defined as the total mass, including water

Synthesis and Characterization of Bulk Nd 1-x Sr x NiO 2 and Nd 1-x Sr x NiO 3

August 21, 2020
Author(s)
Bi-Xia Wang, Hong Zheng, E. Krivyakina, Omar Chmaissem, Pietro Papa Lopes, Jeffrey W. Lynn, Leighanne C. Gallington, Y. Ren, S. Rosenkranz, J. F. Mitchell, D. Phelan
The recent reports of superconductivity in Nd 1-xSr xNiO 2/SrTiO 3 heterostructures have reinvigorated interest in potential superconductivity of low-valence nickelates. Synthesis of Ni 1+ -containing compounds is notoriously difficult. In the current work

Gapless Quantum Excitations from an Icelike Splayed Ferromagnetic Ground State in Stoichiometric Yb 2 Ti 2 O 7

February 3, 2016
Author(s)
J. Gaudet, K. A. Ross, E. Kermarrec, Nicholas Butch, G. Ehlers, H. A. Dabkowska, B. D. Gaulin
… state of the quantum spin ice candidate magnet Yb 2 Ti 2 O 7 is known to be sensitive to weak disorder at the 1% level … equilibrated stoichiometric powder samples of Yb 2 Ti 2 O 7 which show resolution-limited Bragg peaks to appear at low … magnetic structure be gapless on an energy scale < 0.09 meV at all temperatures, and organized into a continuum of …

Correlations Between the Magnetic and Structural Properties of Ca Doped BiMnO 3

April 1, 2001
Author(s)
H Woo, T A. Tyson, Mark Croft, S W. Cheong, Joseph Woicik
Bi1-xCaxMnO3 (BCMO) is known to exhibit charge ordering for a much broader range of x than the classicLa1-xCaxMnO3 (LCMO) system. However, the properties of BCMO over the entire doping range are not well understood. We have performed magnetization and
Displaying 176 - 200 of 287
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