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Journals

LOW-GWP REFRIGERANTS FOR MEDIUM AND HIGH-PRESSURE APPLICATIONS

September 19, 2017

Author(s)

Piotr A. Domanski, Riccardo Brignoli, S J. Brown, Andrei F. Kazakov, Mark O. McLinden

The merits of an alternative refrigerant are established based on many attributes including environmental acceptance, chemical stability in the refrigeration...

Isotopic Dependence of the Hydrogen-Transfer-Triggered Methyl-Group Rotation in Deuterated 5-Methyltropolone

September 19, 2017

Author(s)

Francis J. Lovas, Vadim V. Ilyushin, Alyssa M. Johnson, Jenna Hohl, Emily A. Cloessner, Richard Lavrich

We present here the first experimental study of the microwave spectrum of deuterated 5-methyltropolone, a molecule which exhibits two large-amplitude motions...

3D Nanometrology Based on SEM Stereophotogrammetry

September 18, 2017

Author(s)

Vipin N. Tondare, John S. Villarrubia, Andras Vladar

Three-dimensional (3D) reconstruction of a sample surface from scanning electron microscope (SEM) images taken at two perspectives has been known for decades...

Trichothiazole A, a dichlorinated polyketide featuring an embedded thiazole isolated from Trichodesmium thiebautii blooms

September 18, 2017

Author(s)

Tracey B. Schock, Peter D. Moeller, Rick Belisle, Christopher W. Via, Tracy A. Villareal, Kevin Beauchesne, Matthew J. Bertin, Paul Zimba

Mass spectrometry-guided isolation of the lipophilic extract of Trichodesmium thiebautii bloom material led to the isolation and structure characterization of a...

Temperature measurement and damage detection in concrete beams exposed to fire using PPP-BOTDA based fiber optic sensors Optic Sensors

September 18, 2017

Author(s)

Yi Bao, Matthew Hoehler, Fujian Tang, Christopher M. Smith, Matthew Bundy, Genda Chen

In this study, Brillouin scattering-based distributed fiber optic sensor is implemented to measure temperature distributions and detect cracks in concrete...

Polymer Informatics: Opportunities and Challenges

September 15, 2017

Author(s)

Debra J. Audus, Juan J. de Pablo

We are entering an era where large volumes of scientific data, coupled with algorithmic and computational advances, can reduce both the time and cost of...

Measuring kinetic rate constants of multiple-component reactions with optical biosensors

September 15, 2017

Author(s)

Ryan M. Evans, David A. Edwards, Wenbin Li

One may measure the kinetic rate constants associated with biochemical reactions using an optical biosensor: an instrument in which ligand molecules are...

Electromagnetic Scattering from Individual Crumpled Graphene Flakes: A Characteristic Modes Approach

September 14, 2017

Author(s)

Edward J. Garboczi, Jack F. Douglas, Luis Fernando Vargas Lara, Ahmed M. Hassan, Deb Chatterjee, Kalyan Durbhakula, Md Gaffar

Graphene flakes in real composites are rarely perfectly flat, and often exhibit complicated crumpled shapes. Therefore, the goal of this work was to quantify...

Exact sampling hardness of Ising spin models

September 14, 2017

Author(s)

Bill Fefferman, Michael Foss-Feig, Alexey Gorshkov

Effect of Temperature on the Diffusivity of Fatty Acids for Age Dating of Fingerprints using Time-of-Flight Secondary Ion Mass Spectrometry

September 13, 2017

Author(s)

Shinichiro N. Muramoto, Sarah E. Smith

In the previous work, palmitic acid in sebum was used as a chronological marker for age dating of fingerprints, using time-of-flight secondary ion mass...

Non-Uniqueness in Dual-Energy CT with Beam Hardening

September 13, 2017

Author(s)

Zachary H. Levine

Purpose: The goal is to determine whether dual-energy computed tomography (CT) leads to a unique reconstruction into two basis materials. Methods and Materials...

Probing the Action of Chemical Denaturant on an Intrinsically Disordered Protein by Simulation and Experiment

September 13, 2017

Author(s)

Wenwei Zheng, Alessandro Borgia, Karin Buholzer, Alexander Grishaev, Benjamin Schuler, Robert Best

Chemical denaturants are the most commonly used agent for unfolding proteins, and are thought to act by better solvating the unfolded state. Improved solvation...

Consistent View of Polypeptide Chain Expansion in Chemical Denaturants from Multiple Experimental Methods

September 13, 2017

Author(s)

Alessandro Borgia, Wenwei Zheng, Karin Buholzer, Madeleine Borgia, Anja Schuler, Hagen Hoffman, Andrea Sorrano, Daniel Nettels, Klaus Gast, Alexander Grishaev, Robert Best, Benjamin Schuler

There has been a long-standing controversy regarding the effect of chemical denaturants on the dimensions of unfolded and intrinsically disordered proteins: A...

Spin Wave Damping Arising from Phase Coexistence below Τ_c in Colossal Magnetoresistive La_0.7Ca_.03MnO₃

September 13, 2017

Author(s)

Joel Helton, Susumu K. Jones, Daniel E Parshall, Matthew B. Stone, Dmitry A. Shulyatev, Jeffrey W. Lynn

While the spin dynamics of La 0.7Cad0.3MnO 3 in the ferromagnetic phase are known to be unconventional, previous measurements have yielded contradictory results...

Nanophotonic atomic force microscope transducers enable chemical composition and thermal conductivity measurements at the nanoscale

September 13, 2017

Author(s)

Jungseok Chae, Sangmin An, Georg Ramer, Vitalie Stavila, Glenn Holland, Yohan Yoon, Alec Talin, Mark Allendorf, Vladimir Aksyuk, Andrea Centrone

The atomic force microscope (AFM) offers a rich observation window on the nanoscale, yet many dynamic phenomena are too fast and too weak for direct detection...

Using metagenomic methods to detect organismal contaminants in microbial materials.

September 12, 2017

Author(s)

Nathanael D. Olson, Justin M. Zook, Jayne B. Morrow, Nancy J. Lin

High sensitivity methods as next generation sequencing and PCR are adversely impacted by organismal and DNA contaminants. Current methods for detecting...

Two simple modifications to improve the magnetic field profile in radial magnetic systems

September 12, 2017

Author(s)

Stephan Schlamminger, Shisong Li

All current watt balances employ permanent magnet systems using a yoke with high permeability as flux return. Very often these systems are built with vertical...

Erratum to: Correlations for the Dielectric Constants of H2S, SO2, and SF6

September 11, 2017

Author(s)

Allan H. Harvey, Raymond D. Mountain

Erratum to previous publication to correct incorrect units for dipole moment printed in original.

Comparison of open-path dual frequency comb spectroscopy for high-precision atmospheric gas measurements

September 11, 2017

Author(s)

Eleanor M. Waxman, Kevin C. Cossel, Gar Wing Truong, Fabrizio R. Giorgetta, William C. Swann, Sean Coburn, Robert J. Wright, Gregory B. Rieker, Ian R. Coddington, Nathan R. Newbury

Determination of the Boltzmann constant with cylindrical acoustic gas thermometry: new and final results

September 11, 2017

Author(s)

Keith A. Gillis, XiaoJuan Feng, Jintao Zhang, H. Lin, James B. Mehl, Michael R. Moldover, K Zhang, Y.N. Duan

We report a new determination of the Boltzmann constant k B using a cylindrical acoustic gas thermometer. We determined the length of the copper cavity from...

Probing Elastic and Viscous Properties of Phospholipid Bilayers using Neutron Spin Echo Spectroscopy

September 11, 2017

Author(s)

Michihiro Nagao, Elizabeth G Kelley, Rana Ashkar, Robert David Bradbury, Paul Butler

The elastic and viscous properties of self-assembled amphiphilic membranes dictate the intricate hierarchy of their structure and dynamics ranging from the...

Formation of a crack-free, hybrid skin layer with tunable surface topography and improved gas permeation selectivity on elastomers using gel-liquid infiltration polymerization

September 11, 2017

Author(s)

Justin Gorham, Jason Killgore, Maryam Omidvar, Haiqing Lin, Frank W. DelRio, Lewis M. Cox, Zheng Zhang

Liquid-liquid interfacial polymerization (ll-IP) is conventionally used for manufacturing bulk polymers like nylon, as well as forming barrier layers for...

Multi-environment Nanocalorimeter with Electrical Contacts for Use in the Scanning Electron Microscope

September 11, 2017

Author(s)

Feng Yi, Ana Stevanovic, William Alexander Osborn, Andrei Kolmakov, David A. LaVan

We have developed a versatile nanocalorimeter sensor which allows imaging and electrical measurements of samples under different gaseous environments using the...

New measurement of the Boltzmann constant k by acoustic thermometry of helium-4 gas

September 11, 2017

Author(s)

Laurent Pitre, Fernando Sparasci, Michael R. Moldover, Cecile Guianvarch, Catherine Martin, Martin Himbert, Mark Plimmer, James B. Mehl, Giuliano Albo, Bo Gao, Lara Risegari

The SI unit of temperature will soon be redefined in terms of a fixed value of the Boltzmann constant k derived from an ensemble of measurements worldwide. We...

The Cytosolic Domain of T Cell Receptor ζ Associates with Membranes in a Dynamic Equilibrium and and Deeply Penetrates the Bilayer

September 11, 2017

Author(s)

Kerstin Zimmermann, Rebecca Eells, Frank Heinrich, Stefanie Rintoul, Brian Patrick Josey, Prabhanshu Shekhar, Mathias Loesche, Lawrence J. Stern

Interactions between lipid bilayers and the membrane-proximal regions of membrane-associated proteins play important roles in regulating membrane protein...

Under-Reporting of Wildland Fires in NFIRS: California

September 8, 2017

Author(s)

David T. Butry, Douglas S. Thomas

The absence of a comprehensive database on fire occurrence along with the possibility of inaccurate data entry in current datasets means that some proportion of...

An Efficient Synthesis of Dibenzo[a,l]tetracene and Dibenzo[a,j]tetracene and Their Identification in a Coal Tar Extract

September 8, 2017

Author(s)

Srinivasa Ramisetti, Jorge O. Ona Ruales, Stephen Wise, Shantu Amin, Arun Sharma

An efficient synthesis of dibenzo[a,l]tetracene (1) and dibenzo[a,j]tetracene (2) has been developed using Diels-Alder reaction of in situ generated ortho...

Optical Measurement of Radiocarbon Below Unity Fraction Modern by Linear Absorption Spectroscopy

September 7, 2017

Author(s)

Adam J. Fleisher, David A. Long, Qingnan Liu, Lyn Gameson, Joseph T. Hodges

High-precision measurements of radiocarbon (14C) near or below a fraction modern 14C of one (F14C ≤ 1) are costly, requiring the shipment of samples to...

Fine Tuning of MOF-505 Analogues to Reduce Low-Pressure Methane Uptake and Enhance Methane Working Capacity

September 7, 2017

Author(s)

Mingxing Zhang, Wei Zhou, Tony Pham, Katherine A. Forrest, Wenlong Liu, Yabing He, Hui Wu, Taner N. Yildirim, Banglin Chen, Brian Space, Yi Pan, Michael J. Zaworotko, Junfeng Bai

We present a crystal engineering strategy to fine tune the pore chemistry of a family of isomorphous MOFs with similar pore size, pore surface properties and...

Construction of ntt-Type Metal-Organic Framework from C₂-Symmetry Hexacarboxylate Linker for Enhanced Methane Storage

September 7, 2017

Author(s)

Guohai Xu, Bin Li, Hui Wu, Wei Zhou, Banglin Chen

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