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Displaying 426 - 450 of 617

Freeze-Thaw Crack Determination in Cementitious Materials Using 3D X-ray Computed Tomography and Acoustic Emission

March 8, 2018

Author(s)

Edward Garboczi, Jason Weiss, Yaghoob Farnam, Yasmina Shields

… by varying degree of saturation in the samples (75, 90, 95, and 100 % degrees of saturation). An acoustic emission …

Extended Data Analysis of Bilateral Comparisons with Air and Natural Gas up to 5 MPa

September 28, 2016

Author(s)

John D. Wright, Bodo Mickan, J-P Vallet, CHUNHUI LI

… represent single measurement values within 0.1 % with a 95 % confidence level. The approach represents the results …

Revision of the NIST Standard for 223Ra: New Measurements and Review of 2008 Data

July 1, 2015

Author(s)

Denis E. Bergeron, Jeffrey T. Cessna, Leticia S. Pibida

After discovering a discrepancy in the transfer standard currently being disseminated by the National Institute of Standards and Technology (NIST), we have performed a new primary standardization of the alpha-emitter 223Ra using Live-timed Anticoincidence

A Spectral Analytic Method for Fingerprint Image Sample Rate Estimation

February 25, 2014

Author(s)

John M. Libert, Shahram Orandi, John D. Grantham, Michael D. Garris

… the sample rate. Uncertainty analysis is used to compute 95 % confidence intervals for predictions of sample rate from …

Experimental Study of the Thermal Conductivity of Water +Ammonia Refrigerant Mixtures at Temperatures from 278 K to 356 K and at Pressures up to 20 MPa

February 28, 2013

Author(s)

F. N. Shamsetdinov, Z. I. Zaripov, Ilmutdin M. Abdulagatov, Marcia L. Huber, F. M. Gumerov, F. R. Gabitov, Andrei F. Kazakov

… temperature, and concentration measurements at the 95 % confidence level with a coverage factor of k = 2 is …

New Equations for the Sublimation Pressure and Melting Pressure of H2O Ice Ih

December 17, 2011

Author(s)

Wolfgang Wagner, T Riethmann, Rainer Feistel, Allan H. Harvey

… from the phase-equilibrium condition between the IAPWS-95 scientific standard for thermodynamic properties of fluid …

Critical Constants of Organic Compounds

May 16, 2010

Author(s)

Chris D. Muzny, Vladimir Diky, Andrei F. Kazakov, Robert D. Chirico, Michael D. Frenkel

… expanded uncertainty (level of confidence, approximately 95 %) listed in parentheses. The majority of the values of …

Critical-Current Measurements on an ITER Nb 3 Sn Strand: Effect of Axial Tensile Strain

June 1, 2007

Author(s)

Najib Cheggour, John (Jack) W. Ekin, Loren F. Goodrich

… and the irreversible strain limit ε irr were 0.19 % and 0.8 %, respectively; and the ultimate strain where the wire physically broke was about 0.95 %. The pinning force F p (=Ic × B) was proportional to …

Strain-Induced Grain Growth during Rapid Thermal Cycling of Aluminum Interconnects

January 1, 2007

Author(s)

Robert Keller, Roy H. Geiss, Nicholas Barbosa, Andrew Slifka, David T. Read

… quality factor than that of the consumed grain, at the 95 % confidence level. The results are consistent with a …

Strain Relaxation in Patterned Strained Silicon Directly on Insulator Structures

December 19, 2005

Author(s)

R Z. Lei, W Tsai, I Aberg, T B. O'Reilly, J L. Hoyt, D A. Antoniadis, H I. Smith, Albert J. Paul, Martin L. Green, J Li, R Hull

… distributions in the grading structures predicts that 95% of the strain is maintained in the direction along the …

Sources of Uncertainties in Prompt Gamma-Ray Activation Analysis

August 1, 2005

Author(s)

Elizabeth A. Mackey, Rick L. Paul, Richard M. Lindstrom, David L. Anderson

… the appropriate coverage factor (k) required to achieve a 95% confidence interval. The combined uncertainty includes …

Slip Correction Measurements of Certified PSL Nanoparticles Using a Nanometer Differential Mobillity Analyzer (Nano-DMA) for Knudsen Number From 0.5 to 83

March 1, 2005

Author(s)

Jae H. Kim, George W. Mulholland, S R. Kukuck, D Y. Pui

… the particle surface. System pressure was varied down to 8.27 kPa, enabling slip correction measurements for Knudsen … was carried out. The expanded relative uncertainty (95% confidence interval) in measuring slip correction factor …

Pressure Drop During Refrigerant Condensation Inside Horizontal Smooth, Helical Micro-Fin, and Herringbone Micro-Fin Tubes

October 6, 2004

Author(s)

J A. Olivier, L Liebenberg, Mark A. Kedzierski, J P. Meyer

… flowing through the inner tube (inner diameter of 8 to 9 mm) and water in a counter flow direction in the … 300 to 800 kg/m 2 s. Inlet qualities ranged from 0.85-0.95 and outlet qualities ranged from 0.05-0.15. The test …

Isochoric Heat Capacity Measurements for Heavy Water Near the Critical Point

May 1, 2002

Author(s)

N. G. Polikhronidi, I M. Abdulagatov, Joe W. Magee, G. V. Stepanov

… at fixed densities of 319.60, 398.90, 431.09 and 506.95 kg m -3 . The measurements cover a range of temperatures …

Performance of Personal Alert Safety Systems in Laboratory and Full-Scale Experiments

April 18, 2002

Author(s)

Nelson P. Bryner, Daniel M. Madrzykowski, D W. Stroup, J H. Lee

… devices sense movement or lack of movement and activate a 95-decibel alarm signal if the lack of motion exceeds a …

A Sensitive Denaturing Gradient-Gel Electrophoresis Assay Reveals a High Frequency of Heteroplasmy in Hypervariable Region 1 of the Human mtDNA Control Region

August 1, 2000

Author(s)

L A. Tully, T. J. Parsons, R J. Steighner, M M. Holland, M A. Marino, V L. Prenger

… more. Heteroplasmy was observed in 35 individuals, or 13.8% (95% C.L. 9.6-18.0). Thirty-three of these individuals were …

Acquisition, Analysis and Reporting of Fire Plume Data for Fire Safety Engineering

July 5, 1999

Author(s)

D T. Sheppard, B J. Meacham

… correlation with a new proportionality constant, C, and a 95% prediction interval. Comparison of the test data with …

Technical Program Description: Systems Integration for Manufacturing (SIMA)

July 1, 1994

Author(s)

Howard Bloom

NIST has established an Advanced Manufacturing System and Networking Testbed (AMSANT) which supports R&D in high performance manufacturing systems and testing high performance computer and networking hardware and software in a manufacturing environment

Equation of State for the Thermodynamic Properties of trans-1,2-Dichloroethene [R-1130(E)]

March 28, 2025

Author(s)

Marcia Huber, Andrei Kazakov, Eric Lemmon

… mixture models. The estimated uncertainties (at a k = 2 or 95% level of confidence) are based on comparisons with …

SLowFlowS: A novel flow standard for semiconductor process gases

March 1, 2025

Author(s)

Jodie Gail Pope, Keith A. Gillis, Aaron Johnson, Joey Boyd, John Wright

… Low Flow Standard), and it has an expanded uncertainty (95 % confidence level) between 0.056 % and 0.098 % of the …

A Way of Estimating the Standard Errors of Bayes Factor and Weight of Evidence - A Case Study (Theoretical Framework)

March 27, 2023

Author(s)

Jin Chu Wu, John M. Libert

… To statistically estimate the standard error (SE) and the 95% confidence interval of BF and WoE, both parametric and …

NIST Micronutrients Measurement Quality Assurance Program Sample Integrity Confirmation

June 30, 2022

Author(s)

David L. Duewer, Jeanice Brown Thomas, Stephen Young

… studies, of which 134 were unique materials. Most of the 95 materials produced prior to 2001 were lyophilized serum; …

Recent advances in superconducting nanowire single-photon detector technology for exoplanet transit spectroscopy in the mid-infrared

January 12, 2021

Author(s)

Varun Verma, Jeff Chiles, Adriana Lita, Richard Mirin, Sae Woo Nam, Yao Zhai, Adam McCaughan, Emma Wollman, Alexander Walter, Boris Korzh, Jason Allmaras, Ekkehart Schmidt, S. Frasca, Matthew Shaw

… SNSPDs have demonstrated detection effi- ciency above 95%, intrinsic dark count rates below 1 count/s, and maximum …

Numerical Simulation of the Freeze-Thaw Behavior of Mortar Containing Deicing Salt Solution

November 4, 2016

Author(s)

Hadi S. Esmaeeli, Yaghoob Farnam, Dale P. Bentz, Pablo Zavattieri, Jason Weiss

… water with degrees of saturation equal to 75 %, 85 %, 95 %, and 100 %) are also considered. …

Development of a Northern Continental Air Standard Reference Material

February 18, 2016

Author(s)

George C. Rhoderick, Duane Kitzis, Michael E. Kelley, Walter R. Miller Jr., Bradley Hall, Edward Dlugokencky, Pieter Tans, Antonio M. Possolo, Jennifer Carney

… kind for NIST. Relative expanded uncertainties at the 95 % confidence interval are …

Advanced communications
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