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Search Publications

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Displaying 26 - 50 of 402

Thermal Conductivity of Binary Mixtures of 1,1,1,2-Tetrafluoroethane(R-134a), 2,3,3,3-Tetrafluoropropene (R-1234yf), and trans-1,3,3,3-Tetrafluoropropene (R-1234ze(E)) Refrigerants

July 28, 2022
Author(s)
Aaron Rowane, Ian Bell, Marcia L. Huber, Richard A. Perkins
A total of 2160 thermal conductivity data points, measured using a transient hot-wire instrument, are reported for binary mixtures of R-134a, R-1234yf, and R-1234ze(E) refrigerants from 200 to 340 K to pressures of 12 MPa for mixtures containing R-1234yf

How reproducible are surface areas calculated from the BET equation?

May 23, 2022
Author(s)
Johannes W. Osterreith, James Rampersad, David Madden, Nakul Rampal, Luka Skoric, Bethany Connolly, Rob Ameloot, Joao Marreiros, Conchi Ania, Diana Azevedo, Enrique VilarrasaGarcia, Bianca Santos, Daniel Siderius
Porosity and surface area analysis plays a prominent role in modern materials science, where their determination spans the fields of natural sciences, engineering, geology and medical research. At the heart of this sits the Brunauer-Emmett-Teller (BET)

HDX-MS and MD simulations provide evidence for stabilization of the IgG1- FcgRIa (CD64a) immune complex through intermolecular glycoprotein bonds

December 8, 2021
Author(s)
Kyle Anderson, Kerry Scott, Christina Bergonzo, Ioannis Karageorgos, Elyssia Gallagher, Venkata Tayi, Michael Butler, Jeffrey W. Hudgens
Previous reports present different models for the stabilization of the Fc—FcγRI immune complex. Although accord exists on the importance of L235 in IgG1 and some hydrophobic contacts for complex stabilization, discord exists regarding the existence of

Speed-of-Sound Measurements and a Fundamental Equation of State for Propylene Glycol

June 9, 2021
Author(s)
Eisenbach Tim, Christian Scholz, Roland Span, Diego Cristancho, Monika Thol, Eric W. Lemmon
A fundamental equation of state was developed for propylene glycol. It is written in terms of the Helmholtz energy with the independent variables temperature and density. Due to its fundamental nature, it can be used to calculate all thermodynamic state

Good reporting practice for thermophysical and thermochemical property measurements (IUPAC Technical Report)

April 16, 2021
Author(s)
Ala Bazyleva, Jens Abildskov, Andre Anderko, Olivier Baudouin, Yury Chernyak, Jean-Charles de Hemptinne, Vladimir Diky, Ralf Dohrn, J. R. Elliott, Johan Jacquemin, Jean-Noel Jaubert, Kevin Joback, Ursula Kattner, Georgios Kontogeorgis, Herbert Loria, Paul M. Mathias, John O'Connell, Wolffram Schroer, G. J. Smith, Ana Soto, Shu Wang, Ronald D. Weir
Scientific projects frequently involve measurements of thermophysical, thermochemical, and other related properties of chemical compounds and materials. These measured property data have significant potential value for the scientific community, but

Heat capacity and decomposition of rimantadine hydrochloride

January 30, 2020
Author(s)
Ala Bazyleva, Yauheni Paulechka, Dzmitry H. Zaitsau, Andrey V. Blokhin, Gennady J. Kabo
Heat capacities of antiviral drug rimantadine hydrochloride in the crystalline state were measured by adiabatic calorimetry and differential scanning calorimetry in the temperature range from (7 to 453) K. A broad low-enthalpy solid-state phase anomaly was

Covariance-based uncertainty analysis of reference equations of state

January 6, 2020
Author(s)
Howard Cheung, Jerome Frutiger, Ian Bell, Jens Abildskov, Gurkan Sin, Shengwei Wang
This work presents a detailed methodology for uncertainty analysis applied to a reference equation of state (EOS) based on Helmholtz energy. With increasing interest in uncertainties of thermal process models, it is important to quantify the property

Atomic-scale mechanism of unidirectional oxide growth

November 14, 2019
Author(s)
Xianhu Sun, Wenhui Zhu, Dongxiang WU, Zhenyu Liu, Xiaobo Chen, Lu Yuan, Guofeng Wang, Renu Sharma, Guangwen Zhou
A fundamental knowledge of the unidirectional growth mechanisms is required for precise control on size, shape, and thereby functionalities of nanostructures. Using transmission electron microscopy that spatially and temporally resolves CuO nanowire growth

ENTHALPY OF FORMATION OF AQUEOUS HYDROFLUORIC ACID: REVISION NEEDED?

November 7, 2019
Author(s)
Yauheni Paulechka, Andrei F. Kazakov
Accurate enthalpies of formation of hydrofluoric acid in the gas and liquid states as well as in aqueous solutions are critical for reduction and interpretation of combustion calorimetry data for fluorinated compounds. Analysis of current recommendations

Thermophysical Properties of Polyol Ester Lubricants

August 20, 2019
Author(s)
Thomas J. Bruno, Tara Fortin, Marcia L. Huber, Arno D. Laesecke, Eric Lemmon, Elisabeth Mansfield, Mark O. McLinden, Stephanie L. Outcalt, Richard A. Perkins, Kimberly N. Urness, Jason A. Widegren
This report summarizes the results of work performed for the Naval Air Warfare Center Aircraft Division by the National Institute of Standards and Technology (NIST), Applied Chemicals and Materials Division on the properties of polyol ester lubricants

The hunt for refrigerant blends to replace R-134a

August 1, 2019
Author(s)
Ian H. Bell, Piotr A. Domanski, Gregory T. Linteris, Mark O. McLinden
We investigated refrigerant blends as possible low GWP (global warming potential) alternatives for R-134a in an air-conditioning application. We carried out an extensive screening of the binary, ternary, and four-component blends possible among a list of

Miniaturized Nanohole Array Based Plasmonic Sensor for the Detection of Acetone and Ethanol with Insights into the Kinetics of Adsorptive Plasmonic Sensing

June 6, 2019
Author(s)
Yangyang Zhao, Kalisadhan Mukherjee, Kurt D. Benkstein, Libin Sun, Kristen L. Steffens, Christopher B. Montgomery, Stephen Semancik, Mona Zaghloul
The present work demonstrates development of a miniaturized plasmonic platform comprised of a Au nanohole array (NHA) on a Si/Si3N4 substrate. Plasmonic responses of the NHA platform, which is coated with Cu-benzenetricarboxylate metal organic framework

Diaphragmless Single Pulse Shock Tube for High-Temperature Chemical Kinetics Studies

June 3, 2019
Author(s)
William Sean McGivern, Iftikhar A. Awan, Jeffrey A. Manion
Single pulse shock tubes are effective tools for measuring chemical kinetics at high temperatures, typically (900–1400) K. However, the use of a diaphragm for shock generation leads to significant shock-to- shock inconsistencies in temperature for a

Application of the group contribution volume translated Peng-Robinson equation of state to new commercial refrigerant mixtures

April 29, 2019
Author(s)
Ian H. Bell, Jonathan Welliquet, Maria Mondejar, Sylvain Quoilin, Ala Bazyleva, Frederik Haglind
The search of new refrigerants complying with the most recent environmental regulations must be supported by the availability of simple and reliable models for the prediction of their thermophysical behavior, both as pure substances and as mixtures. Cubic

Ligand-based stability changes in duplex DNA measured with a microscale electrochemical platform

April 12, 2019
Author(s)
Sarah M. Robinson, Zuliang Shen, Jon R. Askim, Christopher B. Montgomery, Herman O. Sintim, Stephen Semancik
Development of technologies for rapidly screening the thermal stability of DNA secondary structures and the effects on stability for binding of small molecule drugs is important to the drug discovery process. In this report, we describe the capabilities of
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