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Displaying 28951 - 28975 of 74303

Crystallization of Poly(ethylene oxide) on Topographically Patterned Substrates

October 16, 2008
Author(s)
Brian C. Okerberg, Christopher Soles, Jack F. Douglas, Alamgir Karim
Crystallization of poly(ethylene oxide) (PEO) on topographically patterned substrates is investigated. Primary nucleation was dramatically enhanced during solvent drying on patterned substrates compared to flat films. The nucleation density also increased

Current Issues in Optical Diffraction Theory

October 16, 2008
Author(s)
Klaus Mielenz
This paper focuses on unresolved or poorly documented issues pertaining to Fresnel's diffraction theory and its various modifications. In Sec. 2 of the paper it is pointed out that all thermal sources used in practice are finite in size, so that the

Data Mining Electron Microscope Images to Estimate a Particle Size Distribution

October 16, 2008
Author(s)
Walter S. Liggett Jr, Robert A. Fletcher
The application considered involves density estimation, spatial prediction, and sizing error. The goal is estimation of a particle size distribution; the data are scanning electron microscope (SEM) images that constitute a sample of a filter surface; and

Deformation of Heterogeneous Adaptive Composite

October 16, 2008
Author(s)
Julia Slutsker, Alexander L. Roytburd
The superelastic deformation of an adaptive layer composite containing a shape memory alloy as an active component is considered in this paper. It is shown that the intrisic instability of superelastic deformation can be suppressed in such kind of the

Deformation of Metals

October 16, 2008
Author(s)
R M. Thomson, Lyle E. Levine, Y Shim
Plastic deformation of a metal is possible because of the production and motion of large numbers of dislocations. Dislocations are one dimensional flexible spaghetti-like defects that interact with one another with both long range (1/r) and short range

Density Functional Theory Study of the Clean and Hydrated Hematite (1 102) Surfaces

October 16, 2008
Author(s)
Cynthia S. Lo, Kunaljeet Tanwar, Anne M. Chaka, Thomas P. Trainor
The structures of the clean and hydrated hematite alpha-Fe2O3 (1-102) surfaces were investigated using density functional theory, and the free energies of the surfaces in chemical equilibrium with water were calculated as a function of temperature and

Dental Adhesion With Self-Etching, Polymerization-Initiating Primers

October 16, 2008
Author(s)
Joseph M. Antonucci, C A. Khatri, Gary E. Schumacher, J E. Code, T Nikaido
Iminoacetic acids are noted for their moderate acidity and ability to chelate metal ions, including the biologically important calcium ion. Previously it was shown that the application of N-phenyliminodiacetic acid (PIDAA) both etches and activates

Dental Ceramic Innovations

October 16, 2008
Author(s)
J R. Kelly
Truly widespread application of ceramics in dental practice (along with major esthetic improvements) awaited two important structural innovations that did not occur until the latter part of this century. The first innovation created today's most often

Description and Results of 2002 Organic Intercomparison ExercisesExercise Materials: Fish Homogenate V (QA02FSH5) Marine Sediment XI (QA02SED11)

October 16, 2008
Author(s)
Michele M. Schantz, John Kucklick, Reenie M. Parris, Dianne L. Poster, Stephen Wise
In support of marine monitoring measurement programs, the National Institute of Standards and Technology (NIST) conducts yearly interlaboratory comparison exercises to provide one mechanism for participating laboratories/monitoring programs to evaluate the

Description and Results of the 2005 NIST/NOAA Interlaboratory Comparison Exercise Program for Organic Contaminants in Marine Mammal Tissues

October 16, 2008
Author(s)
John Kucklick, Rebecca Pugh, Paul R. Becker, Michele M. Schantz, Stephen Wise, T K. Rowles
The National Institute of Standards and Technology (NIST), in support of the National Oceanic and Atmospheric Administration s Marine Mammal Health and Stranding Response Program (NOAA/MMHSRP), conducts annual interlaboratory comparison exercises for the

Detection of Pinholes in Magnetic Tunnel Junctions by Magnetic Coupling

October 16, 2008
Author(s)
Philip Pong, Cindi L. Dennis, Audie M. Castillo, Andrew P. Chen, William F. Egelhoff Jr.
Pinholes in tunnel barriers are detrimental to the performance of magnetic tunnel junctions (MTJ) since they create direct magnetic exchange coupling between the free and pinned magnetic films and may act as current short circuits. A simple and
Displaying 28951 - 28975 of 74303