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Displaying 12526 - 12550 of 17284

Dosimetry of Beta-Ray Opthalmic Applicators: Comparison of Different Measurement Methods

October 16, 2008
Author(s)
Christopher G. Soares, S Vynckier, H Jarvinen, W G. Cross, J Hokkanen, P Sipila, D Fluhs, B Schaeken, F A. Mourtada, G A. Bass, T T. Williams
An international intercomparison of the dosimetry of three beta particle emitting ophthalmic applicators was performed, which involved measurements with radiochromic film, thermoluminescence dosimeters (TLDs), alanine pellets, plastic scintillators, an

Prototype Cantilevers for SI Traceable NanoNewton Force Calibration

September 20, 2006
Author(s)
Richard S. Gates, Jon R. Pratt
A series of extremely uniform prototype reference cantilevers has been created that can be used to calibrate the spring constants of atomic force microscope (AFM) cantilevers and other micromechanical structures. By utilizing optimal combinations of

Prototype Cantilevers for SI-Traceable NanoNewton Force Calibration

September 20, 2006
Author(s)
Richard S. Gates, Jon R. Pratt
A series of extremely uniform prototype reference cantilevers have been created that can be used to calibrate the spring constants of atomic force microscope (AFM) cantilevers and other micromechanical structures. By utilizing optimal combinations of

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 filler substitution have been employed in Europe and elsewhere for many years, the change in

FiPy: A Finite Volume PDE Solver Using Python

September 1, 2005
Author(s)
Daniel Wheeler, Jonathan E. Guyer, James A. Warren
The solution of coupled sets of partial differential equations (PDEs) is ubiquitous in continuum models for phase transformations, such as in phase field or level et simulations. We are developing an object-oriented PDE solver, written in the Python

GaAs Buffer Layer Morphology and Lateral Distributions of InGaAs Quantum Dots

May 1, 2005
Author(s)
Alexana Roshko, Todd E. Harvey, Susan Y. Lehman, Richard Mirin, Kristine A. Bertness, Brittany Hyland
Atomic force microscopy was used to study the morphology of GaAs buffer layers and the density and height distributions of self-assembled InGaAs quantum dots (QDs) grown on these buffers by molecular beam epitaxy. The surface roughness and terrace size of

Uncertainty reporting for experimental thermodynamic properties

January 13, 2005
Author(s)
Qian Dong, Robert D. Chirico, Xinjian Yan, X Hong, Michael D. Frenkel
This paper reviews practices in the expression of uncertainty in the experimental literature for thermodynamic property measurements with determinations of critical temperature for pure compounds used as a case study. The time period considered is from

Uncertainty Reporting for Experimental Thermodynamic Properties

January 1, 2005
Author(s)
Qian Dong, Robert D. Chirico, Xinjian Yan, X Hong, Michael D. Frenkel
This paper reviews practices in the expression of uncertainty in the experimental literature for thermodynamic property measurements with determinations of critical temperature for pure compounds used as a case study. The time period considered is from

XML Schema Validation Process for CORE.GOV

December 1, 2004
Author(s)
KC Morris, Boonserm Kulvatunyou, Simon P. Frechette, Joshua Lubell, Puja Goyal
… projects today rely on shared semantic models based on standards represented using Extensible Mark up Language (XML) … must be consistent and valid in terms of agreed upon standards and guidelines. In this paper, we describe an …

Cost-Effective Responses to Terrorist Risks in Constructed Facilities

March 1, 2004
Author(s)
Robert E. Chapman, C J. Leng
… and Fire Research Laboratory at the National Institute of Standards and Technology, has developed a methodology to … strategies that are based on voluntary industry consensus standards. The methodology presented in this report indicates …

Self-Organized Critical Behavior in a Deforming Metal

July 1, 2001
Author(s)
Y Shim, Lyle E. Levine, R Thomson
It has been shown that the transport of mobile dislocations through blocking dislocation walls in a deforming metal can be treated by a simple percolation theory. Two different mechanisms for strain propagation are proposed in the strain percolation model
Displaying 12526 - 12550 of 17284
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