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NIST Authors in Bold

Displaying 4551 - 4575 of 13217

Polymer Identification of Plastic Debris Ingested by Pelagic-phase Sea Turtles in the Central Pacific

September 12, 2018
Author(s)
Melissa R. Jung, George H. Balazs, Thierry M. Work, T. T. Jones, Sara Orski, Viviana Rodriguez, Kathryn Beers, S. A. Abriola, K. D. Hyrenbach, Brenda A. Jensen, Jennifer Lynch
… 9 green and 4 loggerhead sea turtles caught as bycatch in Pacific longline fisheries using Fourier transform … PE, and 5% high-density PE, all of which should float in seawater based on their density. Albeit not statistically … no sex, size, year or hook depth differences were observed in polymer composition. LDPE and PP, some of the most …

Current State of the Art in Small Mass and Force Metrology Within the International System of Units

May 22, 2018
Author(s)
Gordon Shaw
… This review article summarizes new scientific trends in research for metrology of small mass (1 milligram and … this paper provides an overview of recent developments in methods that demonstrate traceability to the International … emphasis on the implications of redefining the kilogram in terms of Planck's constant. Specific research applications …

Agglomeration of Escherichia coli with positively charged nanoparticles can lead to artifacts in a standard Caenorhabditis elegans toxicity assay

April 19, 2018
Author(s)
Shannon Hanna, Antonio Montoro Bustos, Alexander W. Peterson, Vytas Reipa, Leona D. Scanlan, Sanem Hosbas Coskun, Tae Joon Cho, Monique Johnson, Vincent A. Hackley, Bryant C. Nelson, Michael R. Winchester, John T. Elliott, Elijah Petersen
… use and incorporation of engineered nanoparticles (ENPs) in consumer products requires a robust assessment of their … the robustness of assays for a range of ENPs is critical. In this study, we evaluated the performance of silicon, … ENPs with different charged coatings and sizes to examine in a standard Caenorhabditis elegans toxicity assay …

Detection and Quantification of Graphene Family Nanomaterials in the Environment

March 5, 2018
Author(s)
David Goodwin, Adeyemi Adeyele, Li Piin Sung, Kay Ho, Robert Burgess, Elijah Petersen
… An increase in production of commercial products containing … The fate and potential ecotoxicological effects of GFNs in the environment are currently unclear, partially due to the limited analytical methods for measurement of GFNs in the environment. In this review, the unique properties of …

High coherence plane breaking packaging for superconducting qubits

February 7, 2018
Author(s)
David P. Pappas, Xian Wu, Nicholas T. Bronn, Salvatore B. Olivadese, Vivekananda P. Adiga, Jerry M. Chow
… two nominally identical superconducting quantum processors in pogo packages, which use commercially available parts and … tolerances, are performed at low temperature (10mK) in a dilution refrigerator and both found to behave comparably to processors in standard planar packages with wirebonds where control and …

Rigidity of the magic pentagram game

November 2, 2017
Author(s)
Amir Kalev, Carl Miller
… quantum strategy. As such, rigidity has a vital role in quantum cryptography as it permits a strictly classical user to trust behavior in the quantum realm. This property can be traced back as far … Yao) and has been proved for multiple classes of games. In this paper we prove ridigity for the magic pentagram game, …

Effect of UV Radiation on Surface Mechanical Properties of NanoTiO2-Acrylic Urethane Composites

October 17, 2017
Author(s)
Pu-Jui Su, Bernard Haochih Liu, Stephanie S. Watson, Li Piin Sung
… Nanoindentation was used to monitor the changes in surface mechanical property of nano-titanium dioxide … crystal phases and surface treatments were selected in this study. Preliminary results indicate two competing … behaviors (hardening versus softening) were found in surface modulus and hardness changes as UV exposure time …

JY1 Time Scale: a New Kalman-Filter Time Scale Designed at NIST

October 17, 2017
Author(s)
Jian Yao, Thomas E. Parker, Judah Levine
… to ease operations with existing data. All the data used in this paper are real measurement data, except mentioned … to ~ 20C temperature change of a H-maser chamber) in a clock only leads to ~ 2.5 ns change in the time scale in 100 days, thanks to the advanced …

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

September 12, 2017
Author(s)
Stephan Schlamminger, Shisong Li
… systems are built with vertical and azimuthal symmetries. In its simplest form, the air gap is defined by an inner and … field lines away from the plane of vertical symmetry. In order to suppress this vertical magnetic field, we propose … magnet constructions: (1) Adding a permanent magnet in the outer yoke and (2) decreasing the height of the outer …

Multiple method analysis of TiO2 nanoparticles uptake, accumulation and effects in rice (Oryza sativa L.) plants

August 4, 2017
Author(s)
Yinqging Deng, Elijah Petersen, Katie Challis, Savelas A. Rabb, Richard D. Holbrook, James Ranville, Bryant C. Nelson, Baoshan Xing
… of results among different methods is unclear. In this study, the uptake of NPs and larger bulk particles (BPs) in plant tissues was evaluated using three orthogonal … that TiO2 NPs penetrated into the plant root and resulted in Ti accumulation in aboveground tissues at a significantly …

Flame Inhibition by Potassium-Containing Compounds

June 30, 2017
Author(s)
Valeri I. Babushok, Gregory T. Linteris, Pol Hoorelbeke
… of sulfates and chlorides during biomass combustion in the presence of potassium. Kinetic model includes … demonstrate that the main potassium-containing species in the combustion products are K and KOH. The main inhibition … Combustion Science and Technology …

Short Time and Structural Dynamics in Polypropylene Glycol Nanocomposite

June 1, 2017
Author(s)
Madhusudan Tyagi, R. Casalini, C. M. Roland
… suppression of the displacements, the motions are faster in the nanocomposite, primarily due to poorer packing (lower … very low temperatures we discovered a new dynamic process in the polymer. Reflecting its very local nature, this … Rubber Chemistry and Technology …

Direct In-Situ Mass Specific Absorption Spectra of Biomass Burning Particles Generated from Smoldering Hard and Softwoods

April 28, 2017
Author(s)
Rian You, James Radney, Christopher D. Zangmeister, Michael R. Zachariah
… (BB) represent a major source of carbonaceous aerosol in the terrestrial atmosphere. In this study, mass specific absorption spectra of … (SWP) from 3 hardwood and 3 softwood species were measured in-situ. Absorption data spanning from λ = 500 nm to 840 nm … Environmental Science & Technology …

Biological Uptake, Distribution and Depuration of Radio-labeled Graphene in Adult Zebrafish: Effects of Graphene Size and Natural Organic Matter

February 27, 2017
Author(s)
Kun Lu, Shipeng Dong, Elijah Petersen, Xiaofeng Chang, Peng Wang, Sijie Lin, Liang Mao
… to determine whether the size of graphene plays a role in its uptake, depuration and distribution in adult zebrafish. After 48 h exposure to larger FLG (L-FLG) at 250 ug/L, the amount of graphene in the organism was close to 48 mg/kg fish dry mass, which … Environmental Science and Technology …

A 3-Dimensional Model of the Probe Volume in Duel-Beam Interferometry Measurements

February 19, 2017
Author(s)
J F. Widmann, Cary Presser
… A three-dimensional model of the probe volume in duel-beam interferometry measurements was developed to … corresponds to the probe area calculation commonly used in the interpretation of duel-beam interferometry data, and … Measurement Science & Technology … A 3-Dimensional Model of the Probe Volume in Duel-Beam Interferometry Measurements …

Unified scaling law for flux pinning in practical superconductors: Part 3. Extrapolations from minimum datasets and applications of the extrapolative scaling expression

February 16, 2017
Author(s)
John (Jack) W. Ekin, Najib Cheggour, Loren F. Goodrich, Jolene D. Splett
… with the extrapolative scaling expression (ESE) derived in Part 2. Accuracy is analyzed in terms of RMS error and fractional deviation statistics. … Superconductor Science & Technology … Unified scaling law for flux pinning in practical superconductors: Part 3. Extrapolations from …

Exposure of Few Layer Graphene to Limnodrilus hoffmeisteri: Uptake, Proteins Secretion and Their Effects on the Graphene

January 6, 2017
Author(s)
Liang Mao, Chuanlin Liu, Kun Lu, Cheng Gu, Elijah Petersen
… 36 h to a 1 mg/L solution of FLG, the FLG concentration in the organism was nearly 60 ng/mg of the organism dry mass. … exposure period coated the FLG increasing its stability in solution. Uptake behaviors of Eisenia foetida and Daphnia … for both organisms increasing the FLG body burden in earthworms but lowering it in D. magna. The data provide …

LDTR Measurements of PSAP Particle-Laden Filters from the Biomass Burning Observation Project (BBOP) Field Campaign

December 2, 2016
Author(s)
Cary Presser, Ashot Nazarian, Joseph M. Conny, Duli Chand, Arthur Sedlacek
… Absorptivity measurements in the infrared with the laser-driven thermal reactor (LDTR) … with other commercially available instrumentation (in this case with the PSAP which has been compared with … are required to ascertain particle absorptivity. Thus, in principle one can carried simultaneously both the …

Using Reference Materials to Improve the Quality of Data Generated by USEPA Analytical Methods

November 28, 2016
Author(s)
Stephen E. Long, Stephen A. Wilson, Stuart J. Nagourney
… that decisions based upon the amounts of contaminants in environmental samples are truly protective of public … protocols, yet this is has not been widely implemented. In many cases, data from certified reference materials … materials for environmental applications are discussed in this paper, including the relative cost, and the …

Unified scaling law for flux pinning in practical superconductors: Part 2. Parameter testing, scaling constants, and the extrapolative scaling expression

November 17, 2016
Author(s)
John (Jack) W. Ekin, Najib Cheggour, Loren F. Goodrich, Jolene D. Splett, Bernardo Bordini, David Richter
… implement and offers the prospect of significant savings in sample characterization time and expense. … Superconductor Science and Technology … Unified scaling law for flux pinning in practical superconductors: Part 2. Parameter testing, …
Displaying 4551 - 4575 of 13217
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