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Displaying 16701 - 16725 of 17291

Post hoc Interlaboratory Comparison of Single Particle ICP-MS Size Measurements of NIST Gold Nanoparticle Reference Materials

August 12, 2015

Author(s)

Antonio R. Montoro Bustos, Elijah J. Petersen, Antonio M. Possolo, Michael R. Winchester

Single particle inductively coupled plasma-mass spectrometry (spICP-MS) is an emerging technique that enables simultaneous measurement of nanoparticle size and number quantification of metal-containing nanoparticles at realistic environmental exposure

Role of Elastic Strain on Electrocatalysis of Oxygen Reduction Reaction on Pt

July 23, 2015

Author(s)

Gery R. Stafford, Vijay Sethuraman, Deepa Vairavapandian, Manon C. Lafouresse, Tuhina Maark, Naba Karan, Shouheng Sun, Ugo Bertocci, Andrew Peterson, Pradeep Guduru

The effect of elastic strain on catalytic activity of platinum (Pt) towards oxygen reduction reaction (ORR) is investigated through de-alloyed Pt-Cu thin films; stress evolution in the de-alloyed layer and the mass of the Cu removed are measured in real

High-dimensional hyperentanglement of mode-locked two-photon states

June 29, 2015

Author(s)

Zhenda Xie, Tian Zhong, Sajan Shrestha, XinAn Xu, Junlin Liang, Yan-Xiao Gong, Alessandro Restelli, Jeffrey Shapiro, Franco N. Wong, Chee Wei Wong, Joshua Bienfang

Quantum entanglement is the fundamental resource for quantum information processing and communications, including secure data rates with higher capacities and better error resilience [1-9]. In dense-coded quantum communication channels, it is desirable to

Addiction to MTH1 protein results in intense expression in human breast cancer tissue as measured by liquid chromatography-isotope-dilution tandem mass spectrometry

June 23, 2015

Author(s)

Erdem Coskun, Pawel Jaruga, Ann-Sofie Jemth, Olga Loseva, Leona D. Scanlan, Alessandro Tona, Mark S. Lowenthal, Thomas Helleday, M Miral Dizdar

MTH1 protein sanitizes the nucleotide pool so that modified 2'-deoxynucleoside triphosphates (dNTPs) cannot be used in DNA replication. Cancer cells require MTH1 to avoid incorporation of modified dNTPs resulting in DNA damage mutations and cell death

Dedicated NOAA/JPSS VIIRS Ocean Color Calibration/Validation Cruise

June 12, 2015

Author(s)

B. Carol Johnson, Michael Ondrusek, Eric Stengel, Veronica P. Lance, Menghua Wang, Kenneth Voss, Giuseppe Zibordi, Marko Talone, Zhongping Lee, Jianwei Wei, Junfang Lin, Chuanmin Hu, David English, Charles Kovach, Jennifer Cannizzaro, Alex Gilerson, Sam Ahmed, Ahmed El-Habashi, Robert Foster, Robert Arnone, Ryan Vandermeulen, Sherwin Ladner, Wesley Goode, Joaquim I. Goes, Helga de Rosario Gomes, Alex Chekalyuk, Kali McKee, Scott Freeman, Aimee Neeley, Amir Ibrahim

… at Columbia University; the National Institute of Standards and Technology, NASA/Goddard Space Flight Center …

Quantitative Mass Spectrometry Measurements Reveal Stoichiometry of Principal Postsynaptic Density Protein Components

April 28, 2015

Author(s)

Mark S. Lowenthal, Sanford P. Markey, Ayse Dosemeci

… using isotopically labeled polypeptide concatemer internal standards. Interpretation of PSD protein stoichiometry was …

Research and Development Opportunities for the NIST Net Zero Energy Residential Test Facility

March 26, 2015

Author(s)

Paul D. Domich, Betsy Pettit, Arthur H. Fanney, William M. Healy

… The National Institute of Standards and Technology (NIST) through American Recovery and …

"Weighing" a Gas With Microwave and Acoustic Resonances

March 24, 2015

Author(s)

Keith A. Gillis, James B. Mehl, James W. Schmidt, Michael R. Moldover

With calibrations of large flow meters in mind, we established the feasibility of determining the mass Mof argon gas contained within a 0.3 m 3 commercially manufactured pressure vessel ("tank") with a relative uncertainty of u r(M) = 0.0015 at 0.6 MPa by

A Never-Ending Search for the Truth: Thermodynamics in the Uncertain Era of the Internet

December 29, 2014

Author(s)

Michael D. Frenkel

… Research Center (TRC) of the U. S. National Institute of Standards and Technology (NIST). Principal advantages of this …

Unexpected Peaks in Tandem Mass Spectra due to Reaction of Product Ions with Water in Mass Spectrometer Collision Cells

December 15, 2014

Author(s)

Pedatsur Neta, Mahnaz Farahani, Yamil Simon, Yuxue Liang, Xiaoyu Yang, Stephen E. Stein

While determining the fragmentation pathways of positive ions of drugs, pesticides, metabolites, and other compounds, using electrospray ionization mass spectrometry, we noticed that certain product ions react with water in the collision cell. This

Action spectra for validation of pathogen disinfection in medium-pressure ultraviolet (UV) systems

December 12, 2014

Author(s)

Sara E. Beck, Harold B. Wright, Thomas M. Hargy, Thomas C. Larason, Karl G. Linden

… spores. A tunable laser from the National Institute of Standards and Technology was used to isolate single UV …

In-situ Temperature Calibration Capability for Dimensional Metrology

December 1, 2014

Author(s)

Prem K. Rachakonda, Daniel S. Sawyer, Balasubramanian Muralikrishnan, Christopher J. Blackburn, Craig M. Shakarji, Gregory F. Strouse, Steven D. Phillips

… Metrology Group (DMG) at the National Institute of Standards and Technology (NIST) has the capability to perform …

How to Determine the Net Weight and Purge of Packaged Chitterlings Using NIST Handbook 133, Checking the Net Contents of Packaged Goods

August 13, 2014

Author(s)

Kenneth S. Butcher

… Procedure and other portions of National Institute of Standards and Technology (NIST) Handbook 133, Checking the …

3 He Spin Filter Based Polarized Neutron Capability at the NIST Center for Neutron Research

July 24, 2014

Author(s)

WangChun Chen, Thomas R. Gentile, Ross W. Erwin, Shannon Watson, Qiang NMN Ye, Kathryn L. Krycka, Brian B. Maranville

… was launched in 2006 as part of the National Institute of Standards and Technology (NIST) Center for Neutron Research …

Effect of Impurities on Water Triple Point Cells

July 15, 2014

Author(s)

A Peruzzi, J. van Geel, A. Uytun, M. Kalemci, E. Uysal, Gregory F. Strouse, Yoana Y. Nuevo Ordonez, William Davis

Water triple point cells are the basis for the definition of the Kelvin and for the realization of the International Temperature Scale of 1990. The temperature differences between the cells are mainly caused by impurities arising in the cell water from the

A COMPARISON OF TWO TEMPERATURE-DEPENDENT STRESS-STRAIN MODELS FOR STRUCTURAL STEEL UNDER TRANSIENT HEATING CONDITION

June 11, 2014

Author(s)

Lisa Choe, William Luecke, John L. Gross

… Centre collapse investigation, the National Institute of Standards and Technology (NIST) developed an elevated …

Diffusion-controlled Reference Material for VOC Emissions Testing: Effect of Temperature and Humidity

May 1, 2014

Author(s)

Zhe Liu, Cynthia H. Reed, Steven Cox, John Little

… Virginia Tech (VT) and the National Institute of Standards and Technology (NIST) have created a program to …

3D Topography Measurements on Correlation Cells - A New Approach to Forensic Ballistics Identifications

April 30, 2014

Author(s)

Jun-Feng Song, Wei Chu, D Ott, Johannes A. Soons

… on correlation cells, the National Institute of Standards and Technology (NIST) has developed the "NIST …

BIOLOGICAL AND ENVIRONMENTAL MONITORING AND ARCHIVAL OF SEA TURTLE TISSUES (BEMAST): Rationale, Protocols, and Initial Collections of Banked Sea Turtle Tissues

April 25, 2014

Author(s)

Jennifer M. Lynch, Rebecca S. Pugh, Paul R. Becker

… The National Institute of Standards and Technology (NIST) expanded its analytical …

Comparing Methods for Determining Carbon Dioxide Emissions from Stationary Sources

March 3, 2014

Author(s)

Rodney Bryant, Matthew Bundy, Ruowen Zong

… to emissions measurements. The National Institute of Standards and Technology (NIST) is currently expanding its …

Measurement Science R&D Roadmap for Windstorm and Coastal Inundation Impact Reduction

January 30, 2014

Author(s)

William Coulbourne, Jon Galsworthy, Horia Hangan, Christopher Jones, Chris Letchford, Thomas Smith

… effort was conducted to assist the National Institute of Standards and Technology (NIST) in planning its research and …

Achieving Climate Change Absolute Accuracy in Orbit

October 28, 2013

Author(s)

Bruce Wielicki, Joseph P. Rice

The Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission will provide a metrology laboratory in orbit for the purpose of accurately measuring and attributing climate change. CLARREO measurements establish new climate change benchmarks

Method for Assessing the Potential Effects of Nanoparticles and other Emerging Contaminants on the Catabolic Capabilities of Microbial Communities

September 1, 2013

Author(s)

Kela Weber, Elijah Petersen, Sonja Bissegger, Lars Rehmann, Iris Koch, Jun Zhang, Kenneth Reimer, Robin Slawson, Raymond Legge, Denis O'Carroll

… pre-specified carbon sources and National Institute of Standards and Technology (NIST) 10 nm gold nanoparticles …

Theoretical Failure Envelopes of Open Hole Composite Laminates with A- and B-Basis Allowables Estimated from Smooth Specimen Properties

July 29, 2013

Author(s)

Jeffrey Fong, Carlos A. Cimini, Jose D. Melo, N. Alan Heckert, James J. Filliben

Composite material property databases are important information to guide designers. Aeronautical companies spend a great deal of effort in terms of money and labor to build such databases, which are considered confidential. The development of a single

Analysis of the NIST Commercial and Institutional Building Envelope Leakage Database

May 22, 2013

Author(s)

Steven J. Emmerich, Andrew K. Persily

… energy savings potential of airtightness requirements in standards and codes, and to identify opportunities for …

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