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Journals

Quadrupole Moments and Hyperfine Constants of Metastable States of Ca⁺, Sr⁺, Ba⁺, Yb⁺, Hg⁺, and Au

February 1, 2006

Author(s)

Wayne M. Itano

Comment on the Paper Metrologia 42 49-57 (2005) by K. Szymaniec et al,

February 1, 2006

Author(s)

Steven R. Jefferts, F Levi

A recent evaluation of the accuracy of National Physical Laboratory (NPL) primary frequency standard NPL CsF1 gives an overall frequency uncertainty of δŅ/Ņ 0 =...

Comparison between frequency standards in Europe and the USA at the 10⁻¹⁵uncertainty level

February 1, 2006

Author(s)

Joseph Achkar, Andreas Bauch, R Dach, R Hlavac, Luca Lorini, Thomas E. Parker, G. Petit, Dirk Piester, P Uhrich, K Szymaniec

Istituto Elettrotecnico Nazionale Galileo Ferraris (IEN), National Institute of Standards and Technology (NIST), National Physical Laboratory (NPL), Laboratoire...

Erratum: Simple Flow Meter and Viscometer for Gases With 0.04 % Uncertainty [Metrologia 42, 11-23 (2005)]

February 1, 2006

Author(s)

Robert F. Berg

This is an erratum.

Linear Models in the Presence of Type B Uncertainty:A Bayesian View of Annex H.3 and H.5 of the Guide to the Expression of Uncertainty in Measurement

February 1, 2006

Author(s)

Blaza Toman

Annex H.3 of the Guide to the Expression of Uncertainty in Measurement presents an example of calibration of a thermometer using a linear regression model...

Quantification of the Meniscus Effect in Adhesion Force Measurements

February 1, 2006

Author(s)

Jaroslaw Grobelny, Pradeep N. Namboodiri, Doo-In Kim, Z C. Ying

Adhesion forces between a gold sphere and flat gold substrate are studied using atomic force microscopy in different environments. The pull-off force measured...

Primary Pressure Standards Based on Dimensionally Characterized Piston/Cylinder Assemblies

February 1, 2006

Author(s)

James W. Schmidt, K. Jain, A P. Miiller, Walter J. Bowers Jr., Douglas A. Olson

NIST has characterized two large diameter (35.8 mm) piston/cylinder assemblies as primary pressure standards in the range from 0.05 to 1.0 MPa with...

Influence of Water-to-Cement Ratio on Hydration Kinetics: Simple Models Based on Spatial Considerations

February 1, 2006

Author(s)

Dale P. Bentz

sed on simple spatial considerations, models to describe the hydration kinetics of portland cement are developed and compared to existing experimental data...

CCQM-K13.1 Subsequent Key Comparison: Cadmium and Lead in Sediment

February 1, 2006

Author(s)

Robert R. Greenberg

CCQM-K13.1 is a Subsequent Key Comparison for Cadmium and Lead in Sediment conducted to provide the opportunity for two NMIs to demonstrate and document...

CCQM-K31 Key Comparison: Arsenic in Shellfish

February 1, 2006

Author(s)

Robert R. Greenberg, Elizabeth A. Mackey

A Key Comparison (CCQM-K31) of the determination of arsenic in a marine shellfish (oyster tissue) was conducted under the auspices of the CCQM Inorganic...

Modeling the Influence of Limestone Filler on Cement Hydration in CEMHYD3D

February 1, 2006

Author(s)

Dale P. Bentz

The ASTM C150 standard specification for portland cement now permits the addition of up to 5 % limestone filler. While these and much higher levels of limestone...

Determination of Polybrominated Diphenyl Ethers in Indoor Dust Standard Reference Materials

February 1, 2006

Author(s)

H M. Stapleton, T. Harner, M. Shoeib, Jennifer M. Lynch, Michele M. Schantz, Stefan D. Leigh, Stephen A. Wise

Polybrominated diphenyl ethers (PBDEs) have been measured for the first time in three different indoor dust Standard Reference Materials (SRMs) prepared by the...

Biometrics Standards ? Rising to the Challenge of Technology Innovation

February 1, 2006

Author(s)

Fernando L. Podio

For decades, biometric technologies were primarily used in law enforcement applications. Currently, they are increasingly being required in multiple public and...

Mirofluidic Appproach for Rapid Interfacial Tensiometry

February 1, 2006

Author(s)

J Cabral, Steven Hudson

We report a microfluidic instrument to rapidly measure the interfacial tension of multi-component immiscible liquids. The measurement principle rests upon the...

R-22 Replacement Status (in Italian)

February 1, 2006

Author(s)

J M. Calm, Piotr A. Domanski

Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the...

Examining Ty3 Polypurine Tract Structure and Function by Nucleoside Analog Interference

February 1, 2006

Author(s)

Chandravanu Dash, John Marino, Stuart F. Le Grice

Although retroviral and LTR-retrotransposon PPTs differ significantly in both their length and sequence, they are accurately removed from (+) RNA and (+) DNA by...

Correlating Interfacial Moisture Content and Adhesive Fracture Energy of Polymer Coatings on Different Surfaces

February 1, 2006

Author(s)

E P. O'Brien, Christopher C. White, B D. Vogt

Environmental influences, such as ambient moisture, are well known to be detrimental to the adhesion of polymeric materials to metal surfaces. The adhesion loss...

Requirements for an Effective Reverberation Chamber: Unloaded or Loaded

February 1, 2006

Author(s)

Christopher L. Holloway, David A. Hill, Galen H. Koepke, John M. Ladbury

In this paper we present two versions of a threshold metric for the purpose of accessing the effectiveness of a reverberation chamber. One metric is based on...

Micromagnetic Calculations of Eddy Currents with Time-Varying Fields

February 1, 2006

Author(s)

L Yanik, E D. Torre, Michael J. Donahue

Efficient Path-Segment Protection Utilizing Logical-ring Approach in WDM Mesh Network

February 1, 2006

Author(s)

I-S Hwang, I-Feng Huang, C-D Chien, David H. Su

This work proposes a distributed fault protection mechanism called the Dynamic-Shared Segment Protection (DSSP) algorithm for WDM (Wavelength Division...

Generating Thickness Gradients of Thin Polymer Films via Flow Coating

February 1, 2006

Author(s)

Christopher Stafford, Kristen Roskov, Thomas Epps, Michael J. Fasolka

Thickness is a governing factor in the behavior of films and coatings. To enable the high-throughputanalysis of this parameter in polymer systems, we detail the...

Consistency of Δ ¹³ C Measurements Improved

February 1, 2006

Author(s)

Blaza Toman, T Coplen, W Brand, R. Michael Verkouteren, M Gehre, M Groening, HAJ Meijer

Consistency of Δ ¹³ C Measurements Improved

February 1, 2006

Author(s)

T B. Copelen, W Brand, M Gehre, M Groening, HAJ Meijer, Blaza Toman, R. Michael Verkouteren

We present state-of-the-art measurements and data evaluation methods to show that the consistency of carbon isotope ratio measurements can be improved 39 % to...

Uncertainty in Finite Element Modeling and Failure Analysis: A Metrology-based Approach

February 1, 2006

Author(s)

Jeffrey Fong, James J. Filliben, Roland deWit, Richard J. Fields, Barry Bernstein, Pedro V. Marcal

In this paper, we first review the impact of the powerful finite element method (FEM) in structural engineering, and then address the shortcomings of FEM as a...

Energy Levels of 4f3 in the Free Nd3+ Ion From Emission Spectra

February 1, 2006

Author(s)

J-F Wyart, Ali Meftah, Annik Bachelier, Jocelyne Sinzelle, Wan-U Lydia Tchang-Brillet, Norbert Champion, Nissan Spector, J Sugar

The emission spectrum of neodymium produced by vacuum spark sources was observed in the vacuum ultraviolet on two normal-incidence spectrographs. In an initial...

CH Stretch/Internal Rotor Dynamics in Ethyl Radical: High-Resolution Spectroscopy in the CD^d3-Stretch Manifold

February 1, 2006

Author(s)

Thomas Haber, Andrew C. Blair, David Nesbitt

High resolution IR absorption spectra of supersonically cooled ethyl radicals (T rot19 K) have ben obtained in a slit supersonic jet discharge expansion...

Many-Body Interactions in Semiconductors Probed by Optical Two-Dimensional Fourier Transform Spectroscopy

February 1, 2006

Author(s)

X Li, T Zhang, C N. Borca, Steven T. Cundiff

Understanding many body interactions is a universal challenge in physics that is best approached by studying carefully chosen model systems. One ideal system...

First Principles Phase Diagram Calculations for the System NaCl-KCL: the role of excess vibrational entropy

January 31, 2006

Author(s)

Benjamin P. Burton, A Walle

Cost-Effectiveness Tool Primer: Software Overview

January 31, 2006

Author(s)

Robert E. Chapman, Amy S. Rushing

Economic tools are needed to help the owners and managers of buildings, industrial facilities, and other critical infrastructure to select cost-effective...

Synthesis of Quantum Logic Circuits

January 31, 2006

Author(s)

V V. Shende, Stephen Bullock, I L. Markov

Operators acting on a collection of two-level quantum-mechanical systems can be represented by quantum circuits. In this work we develop a decomposition of such...

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