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NIST Authors in Bold

Displaying 1151 - 1175 of 1415

Single-Crystalline 3D Covalent Organic Frameworks with Exceptionally High Specific Surface Areas and Gas Storage Capacities

October 11, 2024
Author(s)
Baoqiu Yu, Yu Tao, Xuan Yao, Yucheng Jin, Shan Liu, Tongtong Xu, Hailong Wang, Hui Wu, Wei Zhou, Xin Zhou, Xiao Wang, Xu Ding, Xin Xiao, Yue-Biao Zhang, Jianzhuang Jiang
… silanetetrayltetrabenzaldehyde (TFS), respectively, in 1,4-dioxane under the catalysis of acetic acid. … microporosity nature of both activated COFs centered at 1.36 nm for TAM-TFPB-COF and 1.48 nm for TAPB-TFS-COF together with their exceptionally …

Levels and profiles of perfluorinated alkyl acids in liver tissues of birds with different habitat types and trophic levels from an urbanized coastal region of South Korea

August 1, 2022
Author(s)
Sang Hee Hong, Jessica L. Reiner, Mi Jang, Stacy Schuur, Gi Myung Han, John Kucklick, Won Joon Shim
… coastal region of South Korea. A wide range of PFAAs (1.09 ng/g to 1060 ng/g; median=52.6 ng/g)were detected in … and marine birds. The prevalence of long carbon chain (≥14) PFCAs likely implies a wide use of fluorotelomer-based …

Fiber-welded polyionic biocomposites using 1-alkyl-3-vinylimidazolium alkylphosphonate ionic liquids

February 20, 2022
Author(s)
David Durkin, Christian Hoffman, Anders Gulbrandson, Ethan Fessler, Robert Chung, Tyler Cosby, Paul C. Trulove, Ashlee Aiello, Jeremiah Woodcock
… Natural Fiber Welding. Two new Poly-ILs containing the 1-alkyl-3-vinylimidazolium cation and an alkylphosphonate … biocomposites were successfully reduced by nearly 14% and could be easily returned to their original dry state … Fiber-welded polyionic biocomposites using 1-alkyl-3-vinylimidazolium alkylphosphonate ionic liquids …

Early Time-Point Cell Morphology Classifiers Successfully Predict Human Bone Marrow Stromal Cell Differentiation Modulated by Fiber Density in Nanofiber Scaffolds

July 1, 2021
Author(s)
Desu Chen, Joy Dunkers, Wolfgang Losert, Sumona Sarkar
… In this study, we investigate the predictive power of day 1 cell morphology, quantified by a machine learning based … osteogenic differentiation potential is evaluated after 14 days using osteogenic marker gene expression and after 50 … in nanofiber density. Cell morphology measurements at day 1 successfully predict differentiation potential when …

Neutron Spin Rotation Measurements

April 15, 2021
Author(s)
Jeffrey S. Nico, Shannon Hoogerheide, Hans Pieter Mumm, Murad Sarsour, J Amadio, Eamon Anderson, Libertad Barron-Palos, Bret Crawford, Chris Crawford, D. Esposito, Walter Fox, I Francis, J Fry, Chris Haddock, Adam Holley, Kirill Korsak, J Lieers, S Magers, M. Maldonado-Velazquez, D Mayorov, T Okudaira, C Paudel, S Santra, H.M. Shimizu, William M. Snow, A. Sprow, K. Steen, H E. Swanson, John Vanderwerp, P. A. Yergeau
… set by this measurement on the rotation angle, dφ/dz = [+1.7 ± 9.1 (stat.) ± 1.4 (sys.)] × 10−7 rad/m, is limited by statistical …

Understanding Gas Storage in Cuboctahedral Porous Coordination Cages

July 4, 2019
Author(s)
Gregory R. Lorzing, Eric J. Gosselin, Benjamin Trump, Arthur H. P. York, Arni Sturluson, Casey A. Rowland, Glenn P. A. Yap, Craig Brown, Cory M. Simon, Eric D. Bloch
… (M= Fe, Co; Me-bdc 2- = 5-methylisophthalic acid; dabco = 1,4-diazabicyclo[2.2.2.]octane) for neutron diffraction … The five porous materials display BET surface areas from 1,060 - 1,938 m 2 /g and total methane uptake capacitiesof up to a …

Atomic clock performance beyond Earths gravitational limit

December 6, 2018
Author(s)
William F. McGrew, Xiaogang Zhang, Robert J. Fasano, Stefan A. Schaeffer, Kyle P. Beloy, Daniele Nicolodi, Roger C. Brown, N. Hinkley, G. Milani, Marco Schioppo, T. H. Yoon, Andrew D. Ludlow
… Clock comparisons at the 1x10 -18 level could provide 1 cm resolution, vastly outperforming state-of-the-art … the clock frequency, we report systematic uncertainty of 1.4x10 -18 , measurement instability of 3.2x10 -19 and …

Progress Towards Accurate Monitoring of Flue Gas Emissions

May 16, 2018
Author(s)
Aaron Johnson, Iosif Isaakovich Shinder, Michael R. Moldover, Joey Boyd, James Filla
… when used in complex velocity fields. NIST developed a 1/10th scale-model smokestack simulator (SMSS) to quantify … ultrasonic CEMS deviated from NIST standards by 14 % to 17 % in a highly distorted flow. Deviations for the …

Spectral tuning of localized surface phonon-polariton modes in selective area epitaxy GaN nanowire arrays

May 1, 2018
Author(s)
Bryan T. Spann, J. Ryan Nolen, Matthew D. Brubaker, Thomas G. Folland, Chase T. Ellis, Joseph G. Tischler, Todd E. Harvey, Joshua D. Caldwell, Kristine A. Bertness
… to manufacture innovative long-wavelength photonic devices.1 Such semiconductors can support propagating and localized … can be achieved, commensurate with high crystal quality.1,2 The phonon frequency regime for these materials suggest … do not occur in bulk GaN and occur around 700 cm-1 (~ 14.3 µm), offering a potential platform for IR device …

Real-Time Nanopore-Based Recognition of Protein Translocation Success

February 27, 2018
Author(s)
David Paul Hoogerheide, Philip A. Gurnev, Tatiana K. Rostovtseva, Sergey M. Bezrukov
… capture, sensing, and delivery of polymeric biomolecules. 1-6 Nanopore-based single-molecule DNA sequencing, in which … membrane. For disordered peptides, 13 folded proteins, 14 or block copolymers with heterogeneous charge densities, …

An Ideal Molecular Sieve for Acetylene Removal from Ethylene with Record Selectivity and Productivity

December 20, 2017
Author(s)
Bin Li, Xili Cui, Dan O'Nolan, Hui-Min Wen, Mengdie Jiang, Rajamani Krishna, Hui Wu, Rui-Biao Lin, Yu-Sheng Chen, Daqiang Yuan, Huabin Xing, Wei Zhou, Qilong Ren, Guodong Qian, Michael J. Zaworotko, Banglin Chen
… (C 2 H 4 ) and propylene (C 3 H 6 ) in the future. ^1-3^ Although extensive research endeavors have been pursued … report the first example of ideal porous materials SIFSIX-14-Cu-i (also termed as UTSA-200) with ultra-fine-tuning of … purification capacity for removal of trace C 2 H 4 with 1.18 millimoles per gram C 2 H 2 uptake capacity from a 1/99 …

Combining Microscopic and Macroscopic Probes to Untangle the Single-Ion Anisotropy and Exchange Energies in an S = 1 Quantum Antiferromagnet

April 20, 2017
Author(s)
Jamie Brambleby, Jamie Lee Manson, Paul A. Goddard, Matthew B. Stone, Roger D. Johnson, Pascal Manuel, Jacquelina A. Villa, Craig Brown, Helen Lu, Shalinee Chikara, Vivien Zapf, Saul H. Lapidus, Rebecca Scatena, Piero Macchi, Yu-Sheng Chen, Lai-Chin Wu, John Singleton
… phase diagram for polycrystalline samples of S = 1 [Ni(HF 2 )(pyz) 2 ]SbF 6 by exploiting a selected range of … the collective proves, we deduced the parameters; D = 13.3(1) K, J = 10.4(3) K and J'= 1.4(2) K such that D/J (approximately equal to} 1.3 and J'/J …

Ultramicroelectrode Studies of Self-Terminated Nickel Electrodeposition and Nickel Hydroxide Formation upon Water Reduction

November 14, 2016
Author(s)
Nicole Ritzert, Thomas P. Moffat
… microscale pH measurements. For 5 mmol/L NiCl2 + 0.1 mol/L NaCl, pH 3.0, electrolytes, the voltammetric current … at modest overpotentials, i.e., between –0.6 V and –1.4 V vs. Ag/AgCl, was distributed between metal deposition … island edges are available. At potentials below –1.5 V vs. Ag/AgCl, H2O reduction is accelerated, leading to …
Displaying 1151 - 1175 of 1415
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