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Search Publications

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Displaying 851 - 875 of 2915

A Phase-Field Model With Convection: Numerical Simulations

December 1, 2000
Author(s)
D M. Anderson, Geoffrey B. McFadden, A A. Wheeler
In a previously developed phase-field model of solidification that includes convection in the melt, the two phases are represented as viscous liquids, where the putative solid phase has a viscosity much larger than the liquid phase. In this paper we report

The Infrared Spectrum of NN...CO+ Trapped in Solid Neon

December 15, 2011
Author(s)
Warren E. Thompson, Marilyn E. Jacox
… NNCO+ for detection of its NN- and CO-stretching vibration fundamentals. Detailed isotopic substitution studies and … estimation of the positions of two of its low-frequency fundamentals. A sufficient concentration of NOCN is also …

Measurement Methods for Materials Properties: Elasticity

February 19, 2017
Author(s)
Sheldon M. Wiederhorn, Richard J. Fields
Elastic constants must be obtained by experiment methods. Materials are too complicated and theory of solids insufficiently sophisticated to obtain accurate theoretic determinations of elastic constants. Usually, simple static mechanical tests are used to

A Constrained L2 Based Algorithm for Standardized Planar Datum Establishment

November 18, 2015
Author(s)
Craig M. Shakarji, Vijay Srinivasan
For years (decades, in fact) a definition for datum planes has been sought by ASME and ISO standards writers that combines the contacting nature of traditional surface plate mating with a means of balancing rocking conditions when there is a centrally

Method for Assessing the Potential Effects of Nanoparticles and other Emerging Contaminants on the Catabolic Capabilities of Microbiological Communities

September 30, 2013
Author(s)
Kela Weber, Elijah Petersen, Sonja Bissegger, L. Rehmann, Robin Slawson, Raymond Legge, Denis O'Carroll
With an increasing utilization of nanoparticles (NPs) in consumer products, the potential for release to the environment also increases. It is thus imperative that methods to test their potential effects in ecosystems are developed. This study describes an

Evaluation of Cell Source for Tissue Engineered Ligament: Anterior Cruciate Ligament (ACL), Medial Collateral Ligament (MCL), Achilles Tendon (AT) and Patellar Tendon (PT)

October 16, 2008
Author(s)
James A. Cooper, L A. Bailey, Janell N. Carter, Cynthia Castiglioni, Michelle D. Kofron, Frank K. Ko, Cato T. Laurencin
This study investigated four different connective tissue cell types to determine which cell type is an optimal source for seeding a tissue-engineered Anterior Cruciate Ligament (ACL) replacement. Cells from the ACL, Medial Collateral Ligament (MCL)

Effect of Surface Wettability on Fast Transient Microboiling Behavior

July 22, 2003
Author(s)
O C. Thomas, Richard E. Cavicchi, Michael J. Tarlov
Microboiling events associated with the fast transient heating of a micrometer-scale metallic thin film heater immersed in water have been studied. The effect of surface properties on the microboiling transients was examined by modifying heater surfaces

High Pressure Gas-Coupled Ultrasonic Inspection for Discontinuities

April 1, 2000
Author(s)
R E. Schramm, C M. Fortunko
A liquid couplant is usually necessary between the transducer and the specimen for ultrasonic crack detection and thickness gaging. This work demonstrates the possibility of using pressurized gas as the couplant for noncontact inspection. Historically

On a generalization of the generating function for Gegenbauer polynomials

January 28, 2013
Author(s)
Howard S. Cohl
We derive a Gegenbauer polynomial expansion for complex powers of the distance between two points in $d$-dimensional Euclidean space. The argument of the Gegenbauer polynomial in the expansion is given by the cosine of the separation angle between the two

Alternative Analyses of Measurements of the Planck Constant

July 5, 2012
Author(s)
Blaza Toman
We compare different methods for the adjustment of the Planck constant using recent, inconsistent data. First we discuss the popular Birge ratio method. By stating the underlying statistical model we critically assess and modify this method. We then

Thermodynamic Properties of Air from 60 to 2000 K at Pressures up to 2000 Mpa

October 1, 1999
Author(s)
M D. Panasiti, Eric Lemmon, S G. Penoncello, R. T. Jacobsen, Daniel G. Friend
A thermodynamic property formulation for standard dry air based upon experimental P-p-T, heat capactiy, and speed of sound data and predicted values, which extends the range of prior formulations to higher pressures and temperatures, is presented.
Displaying 851 - 875 of 2915
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