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Search Publications

NIST Authors in Bold

Displaying 101 - 125 of 2933

Thermal Response Simulation for Tuning PID Controllers in a 1016 mm Guarded Hot Plate Apparatus

July 1, 2011
Author(s)
Robert R. Zarr, William C. Thomas
… the controlled thermal performance of a large guarded hot-plate apparatus. The control system consists primarily of … and includes the same control algorithm as used in the hot-plate apparatus. The model, accounting for both thermal … building technology, guarded hot plate, mathematical simulation, PID, temperature control, …

Gegenbauer expansions and addition theorems for a binomial and logarithmic fundamental solution of the even-dimensional Euclidean polyharmonic equation

August 4, 2022
Author(s)
Howard Cohl, James F. Lawrence, Lisa Ritter, Jessie Hirtenstein
… operator greater than or equal to half the dimension, a fundamental solution of the polyharmonic equation has … behavior. Gegenbauer polynomial expansions of these fundamental solutions are obtained through a limit applied to Gegenbauer expansions of a power-law fundamental solution of the polyharmonic equation. This limit …

Rapidly Renewable Polishing Lap

September 1, 1995
Author(s)
Christopher J. Evans, R E. Parks
… diamond, electroless nickel, lapping, polishing, porous ceramics, sapphire …

Fundamental constants and tests of theory in Rydberg states of hydrogenlike ions

July 1, 2009
Author(s)
Ulrich D. Jentschura, Peter Mohr, Joseph N. Tan, Benedikt J. Wundt
… be used to test theory and to obtain information regarding fundamental constants. We find that for Rydberg states, … fundamental constants, Rydberg constant, quantum … Fundamental constants and tests of theory in Rydberg states …

Fundamental Parameters Line Profile Fitting in Laboratory Diffractometers

February 1, 2004
Author(s)
R W. Cheary, A A. Coelho, James Cline
… The fundamental parameters approach to line profile fitting uses … based models to generate the line profile shapes. Fundamental parameters profile fitting (FPPF) has been used … acceptance function. One of the intrinsic benefits of the fundamental parameters approach is its adaptability any …

Structural Phase Transitions on Nickel at the Curie Temperature

March 16, 1981
Author(s)
J Hamilton, Terrence J. Jach
… that a reversible step period rearrangement on clean nickel single-crystal surfaces occurs in the immediate … is carbidic, not graphitic, and indicates a change in the nickel surface electronic structure occurring at the … Structural Phase Transitions on Nickel at the Curie Temperature …

On Lamb Modes as a Function of Acoustic Emission Source Rise Time

January 1, 2010
Author(s)
Marvin A. Hamstad
A study was carried out to examine Lamb-wave modal content as a function of the acoustic emission (AE) source rise time. The study used a validated finite element code to model the source operation and subsequent wave propagation up to a distance of 480 mm

Reversible Step Rearrangement and Segregation on Nickel Surfaces at the Curie Temperature

October 1, 1982
Author(s)
Terrence J. Jach, J Hamilton
… and carbon segregation have been observed on clean nickel single-crystal surfaces whose bulk is also relatively … occurred over a temperature range of 35 K at the nickel Curie temperature, as determined by simultaneous … diffraction, Auger, and permeability measurements on nickel stepped and flat (111) surfaces. The observation of …

Electrodeposition of Ni in Sub-Micrometer Trenches

July 2, 2007
Author(s)
S D. Kim, John E. Bonevich, Daniel Josell, Thomas P. Moffat
… surfactants on the rate and morphological evolution of nickel electrodeposition from a Watts-type bath is presented. … (CTA+) yield significant inhibition of nickel deposition. For a range of concentrations the single … such as thiourea (TU) exert a depolarizing effect on nickel deposition and negligible hysteresis. When PEI and TU …

NIST/NRC-Canada Interlaboratory Comparison of Guarded Hot Plate Measurements: 1993-1997

June 1, 1997
Author(s)
Robert R. Zarr, M K. Kumaran, E S. Lagergren
… silica. The measurements were determined using guarded hot plate apparatus at the National Institute of Standards and … silica, building technology, glass fiber, guarded hot plate apparatus, insulation, interlaboratory, international, … NIST/NRC-Canada Interlaboratory Comparison of Guarded Hot Plate Measurements: 1993-1997 …

Weldability of Nickel-Base Alloys

May 22, 2014
Author(s)
Jeffrey W. Sowards, Jeremy Caron
… Metallurgy, Nickel-base alloys, Weldability, Welding … Weldability of Nickel-Base Alloys …

Technical Report of Range-BASF Program

February 2, 2016
Author(s)
Leonid A. Bendersky, Kwo-hsiung Young, Simon K. Ng
… material together with a core-shell type alpha-beta nickel hydroxide as the active positive electrode and a … stability, we have demonstrated the feasibility of using a nickel/metal hydride battery in EV applications. … Nickel metal hydride battery, Electrochemistry, Hydrogen …

Assessment of Uncertainties for the NIST 1016 mm Guarded-Hot-Plate Apparatus: Extended Analysis for Low-Density Fibrous-Glass Thermal Insulation

February 1, 2010
Author(s)
Robert R. Zarr
… of Standards and Technology (NIST) 1016 mm Guarded-Hot-Plate apparatus is presented. The uncertainties are reported … the measurement process. For the NIST 1016 mm Guarded-Hot-Plate apparatus, considerable improvement, especially at … calibration, fibrous glass blanket, guarded hot plate, thermal conductivity, thermal insulation, uncertainty …

Assessment of Uncertainties for the NIST 1016 mm Guarded-Hot-Plate Apparatus: Extended Analysis for Low-Density Fibrous-Glass Thermal Insulation

February 1, 2009
Author(s)
Robert R. Zarr
… of Standards and Technology (NIST) 1016 mm Guarded-Hot-Plate apparatus is presented. The uncertainties are reported … the measurement process. For the NIST 1016 mm Guarded-Hot-Plate apparatus, considerable improvement, especially at … calibration, fibrous glass blanket, guarded hot plate, thermal conductivity, thermal insulation, uncertainty …

International Comparison on Thermal Conductivity Measurements of Insulating Materials by Guarded Hot Plate

September 2, 2009
Author(s)
Bruno Hay, Leonel Lira Cortes, Benoit Doucey, Jean Remy Filtz, Nikolay Sokolov, Clark Stacey, Robert R. Zarr, Jintao Zhang
… National Metrology Institutes (NMIs) using Guarded Hot Plate apparatus according to the International Standard ISO … BIPM, expanded polystyrene, guarded hot plate, inter-laboratory comparison, mineral wool, national … Measurements of Insulating Materials by Guarded Hot Plate …

Measuring Flow Curve and Failure Conditions for a MEMS-Scale Electrodeposited Nickel Alloy

July 26, 2019
Author(s)
David T. Read, Li-Anne Liew, Ryan White, Nicholas Barbosa, John T. Geaney
… is reported. Tests were performed on an electrodeposited nickel alloy by use of a small-scale conventional loading … LIGA, mechanical properties, mesoscale, nanomaterials, nickel, tensile properties, true strain, true stress … and Failure Conditions for a MEMS-Scale Electrodeposited Nickel Alloy …
Displaying 101 - 125 of 2933
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