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Differential sampling measurement of a 7 V rms Sine Wave with a Programmable Josephson Voltage Standard

June 1, 2013

Author(s)

Alain Rufenacht, Charles J. Burroughs, Paul D. Dresselhaus, Samuel P. Benz

A 10 V programmable Josephson voltage standard has enabled sine waves with voltages up to 7 V rms to be accurately measured with a differential sampling measurement technique. Expanding the voltage range for this technique enables direct calibration of the

Single fiber tensile properties measured by the Kolsky bar using a direct fiber clamping method

June 1, 2013

Author(s)

Jae Hyun Kim, Nathanael A. Heckert, Walter G. McDonough, Kirk D. Rice, Gale A. Holmes

Traceability for Aerosol Electrometer in the fA Range

June 1, 2013

Author(s)

Dean G. Jarrett, Miles Owen

Described here are the configurations and procedures used to provide traceability to electrical standards for an aerosol electrometer calibration in the range ± 20 fA to ± 40 fA. The technique used here simulated the condition of a current induced when

Experimental Determination of Mode Correction Factors for Thermal Method Spring Constant Calibration of AFM Cantilevers using Laser Doppler Vibrometry

May 30, 2013

Author(s)

Richard S. Gates, William A. Osborn, Jon R. Pratt

Mode corrections factors (MCFs) are a significant adjustment to the spring constant values measured using the Thermal cantilever calibration method. Usually, the ideal factor of 0.971 for a tipless rectangular cantilever is used which adjusts the value by

Bubble Point Measurements of Eight Binary Mixtures for Organic Rankine Cycle Applications

May 24, 2013

Author(s)

Stephanie L. Outcalt, Eric W. Lemmon

The bubble point pressures of two compositions of each of eight binary mixtures have been measured over a temperature range of 270 K to 380 K. Six of the mixtures included pentane, which was mixed with 1,1,1,3,3-pentafluoropropane (R-245fa); methyl

The Development and Implementation of Quality Assurance Programs to Support Nutritional Measurements

May 24, 2013

Author(s)

Lane C. Sander, Mary Bedner, David L. Duewer, Katrice A. Lippa, Melissa M. Phillips, Karen W. Phinney, Catherine A. Rimmer, Michele M. Schantz, Katherine E. Sharpless, Susan Tai, Jeanice M. Brown Thomas, Stephen A. Wise, Laura J. Wood, J. M. Betz, Paul M. Coates

The National Institute of Standards and Technology administers quality assurance programs devoted to improving measurements of nutrients and related metabolites in foods, dietary supplements, and serum and plasma samples. These programs have been developed

A Case Study of Performance Degradation Attributable to Run-Time Bounds Checks on C++ Vector Access

May 22, 2013

Author(s)

David W. Flater, William F. Guthrie

Programmers routinely omit run-time safety checks from applications because they assume that these safety checks would degrade performance. The simplest example is the use of arrays or array-like data structures that do not enforce the constraint that

Writing Guidelines to Develop an Memorandum of Understanding for Interoperable Automated Fingerprint Identification Systems

May 14, 2013

Author(s)

Susan M. Ballou, Michael Garris, Anthony Clay, Joi Dickerson, Peter T. Higgins, Lisa Jackson, Joe Morrissey, Beth Owens, Joe Polski, Janet Hoin, Leo Norton, Melissa Taylor

This is one of a series of documents prepared by the Latent Print Automated Fingerprint Identification System (AFIS) Interoperability Working Group. The purpose of these documents is to provide guidance and a framework to those involved in the

High Accuracy Measurements Using a Scanning System with a Single Point Triangulation Sensor

May 13, 2013

Author(s)

Theodore D. Doiron, Wei Ren, Eric S. Stanfield, Balasubramanian Muralikrishnan, Christopher J. Blackburn

The capabilities of non-contact laser spot triangulation sensors for high accuracy measurements have slowly increased over the past decade, and now have usable resolution below 0.1 µm. The Dimensional Metrology Group has developed a simple scanning system

Metrology for Lab-on-a-Chip Final-Product Devices

May 12, 2013

Author(s)

Darwin R. Reyes-Hernandez, Michael W. Halter, Jeeseong Hwang

New metrology tools to measure the critical parameters of internal structures in lab on a chip devices are greatly needed in order to develop standard tests for this technology. Here we present a method that combines a custom made optical coherence

Standardized Performance Testing Metrics for Optical Coordinate Measurement Systems

May 9, 2013

Author(s)

Steven D. Phillips

Optical probing technology on coordinate measuring machines (CMMs) operates significantly differently from discrete point probing associated with tactile probing CMMs hence manufacturers of this technology seek to use different testing artifacts for

Quantitative Analysis of Dendron-Conjugated Cisplatin-Complexed Gold Nanoparticles Using Scanning Particle Mobility Mass Spectrometry

May 8, 2013

Author(s)

De-Hao D. Tsai, Tae Joon Cho, Sherrie R. Elzey, Julien C. Gigault, Vincent A. Hackley

We report a high-resolution and traceable method to quantify the drug loading on nanoparticle-based cancer therapeutics, and demonstrate this method using a model cisplatin functionalized dendron-gold nanoparticle (AuNP) conjugate. Electrospray

The NIST Quality System for Measurement Services: A Look at its Past Decade and a Gaze toward its Future

May 8, 2013

Author(s)

Sally S. Bruce

As the National Metrology Institute (NMI) for the United States, NIST, formerly the National Bureau of Standards, has provided measurement services, both calibrations and reference materials, for more than 100 years. Through these services, our customers

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