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Displaying 29651 - 29675 of 143806

Optical system design for femtosecond-level synchronization of clocks

February 13, 2016

Author(s)

Laura C. Sinclair, William C. Swann, Jean-Daniel Deschenes, Hugo Bergeron, Fabrizio R. Giorgetta, Esther Baumann, Michael A. Cermak, Ian R. Coddington, Nathan R. Newbury

Synchronization of optical clocks via optical two-way time-frequency transfer across free-space links can result in time offsets between the two clocks below tens of femtoseconds over many hours. The complex optical system necessary to support such

In Situ Monitoring, Separation, and Characterization of Gold Nanorod Transformation during Seed-Mediated Synthesis

February 12, 2016

Author(s)

Thao M. Nguyen, John M. Pettibone, Julien Gigault, Vincent A. Hackley

Gold nanorods (GNRs) occupy a unique place in nanotechnology due to the ability to tune the optical properties from the middle visible to near IR spectrum by varying their size and aspect ratio (AR). Although there have been many anisotropic growth

Interfaces for Personal Identity Verification [including updates as of 02-08-2016]

February 11, 2016

Author(s)

David Cooper, Hildegard Ferraiolo, Ketan Mehta, Salvatore Francomacaro, Ramaswamy Chandramouli, Jason Mohler

[Superseded by SP 800-73pt1-5 (July 2024): https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957973 SP 800-73pt2-5 (July 2024): https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957975 SP 800-73pt3-5 (July 2024): https://tsapps.nist.gov

Non-volatile Memory Devices with Redox-active Diruthenium Molecular Compound

February 12, 2016

Author(s)

Sujitra J. Pookpanratana, Hao Zhu, Emily G. Bittle, Sean Natoli, Tong Ren, Curt A. Richter, Qiliang Li, Christina A. Hacker

Non-volatile Flash-based memory devices, which incorporate a novel redox-active diruthenium molecule, is demonstrated. The memory device is in a capacitor structure, metal/oxide/molecule/oxide/silicon, where the diruthenium molecule is covalently attached

Quantitative Flow Cytometry Measurements in Antibody Bound per Cell Based on CD4 Reference

February 12, 2016

Author(s)

Lili Wang, Heba Degheidy, Fatima Abbasi, Howard Mostowski, Gerald Marti, Steven R. Bauer, Robert Hoffman, Adolfas K. Gaigalas

Multicolor flow cytometer assays are with fluorescently labeled antibodies routinely used in clinical laboratories to measure the cell number of specific immunophenotypes and to estimate expression levels of specific receptors/antigens either on the cell

Time Propagation of Partial Differential Equations Using the Short Iterative Lanczos Method and Finite-Element Discrete Variable Representation

February 12, 2016

Author(s)

Barry I. Schneider, Klaus Bartschat, Xiaoxu Guan

The Short Iterative Lanczos (SIL) method has been combined with the Finite-Element Discrete Variable Representation (FE-DVR) to yield a powerful approach to solving the time-dependent Schrödinger equation. It has been applied to the interaction of short

Biodistribution and Toxicity of Radio-labeled Few Layer Graphene in Mice after Intratracheal Instillation

February 11, 2016

Author(s)

Bingcai Pan, Maoji Hu, Liang Mao, Xuxiang Zhang, Elijah Petersen

BACKGROUND: The potential human health risks from graphene inhalation exposure have attracted substantial scientific interest as a result of the numerous exciting potential commercial applications of graphene. However, the long-term distribution in

Seeing through walls at the nanoscale: microwave microscopy of enclosed objects and processes in liquids

February 11, 2016

Author(s)

Alexander Tselev, Jeyavel Velmurugan, Anton Ievlev, Sergei Kalinin, Andrei Kolmakov

Noninvasive in situ nanoscale imaging in liquid environments is a current imperative in analysis of delicate bio-medical objects and electrochemical processes at reactive liquid-solid interfaces. Microwaves of a few gigahertz frequency offer photons of

2011 Wildland Urban Interface Amarillo Fires Report #2  Assessment of Fire Behavior and WUI Measurement Science

February 10, 2016

Author(s)

Alexander Maranghides, Derek McNamara

On February 27, 2011, three fires began in the outskirts of Amarillo, Texas, two of which destroyed or damaged buildings in multiple housing developments. The National Institute of Standards and Technology (NIST), as part of its Disaster and Failure

A Description of the Clinical Proteomics Tumor Analysis Consortium (CPTAC) Common Data Analysis Pipeline

February 10, 2016

Author(s)

Jeri S. Roth, Paul A. Rudnick, Sanford Markey, Yuri Mirokhin, Xinjian Yan, Dmitrii Tchekhovskoi, Stephen Stein, Nathan J. Edwards, Ratna R. Thangudu, Karen A. Ketchum, Christopher R. Kinsinger, Mehdi Mesri, Henry Rodriguez

The Clinical Proteomic Tumor Analysis Consortium (CPTAC) has produced large proteomics datasets from the mass spectrometric interrogation of tumor samples previously studied by The Cancer Genome Atlas (TCGA) program. The availability of the genomic and

A Review of NIST Projects in Surface and Topography Metrology for Firearm Evidence Identification in Forensic Science

February 10, 2016

Author(s)

Jun-Feng Song, Xianping Liu

This is a review of the National Institute of Standards and Technology's (NIST) efforts in surface metrology and topography measurements for firearm evidence identifications in forensic science. Based on the research projects in surface metrology and

Coil motion effects in watt balances: a theoretical check

February 10, 2016

Author(s)

Stephan Schlamminger, Shisong Li, Darine El Haddad, Frank C. Seifert, Leon S. Chao, Jon R. Pratt

A watt balance is a precision apparatus for the measurement of the Planck constant that has been proposed as a primary method for realizing the unit of mass in a revised International System of Units. In contrast to an ampere balance, which was

Impact of Monovalent Counter-ions on the Conformation of Flexible Polyelectrolytes Having Different Molecular Architectures

February 10, 2016

Author(s)

Alexandros Chremos, Jack F. Douglas

We explore the condensation of monovalent counter-ions on the molecular conformation of highly charged flexible polyelectrolytes for a range of molecular topologies (linear chains, stars, and unknotted and trefoil rings) by molecular dynamics simulations

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