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Displaying 47026 - 47050 of 74084

High-Throughput Measurement of Polymer Blend Phase Behavior

August 1, 2000
Author(s)
J C. Meredith, Alamgir Karim, Eric J. Amis
Two-dimensional combinatorial thin film libraries are used to rapidly measure the LCST phase boundary of polystyrene and poly (vinylmethyl ether) blends in compositin-temperature space. The film libraries with continuous gradients in polymer blend

Inductively Coupled Plasmas in Low Global Warming Potential Gases

August 1, 2000
Author(s)
Amanda N. Goyettes, Yicheng Wang, James K. Olthoff
Many high density discharges used in microelectronics fabrication use fluorocarbon gases with coincidentally high global-warming potentials (GWPs). We have determined the identities, fluxes, and energy distributions of ions produced in high density

Linear Procedures for Structures with Velocity-Dependent Dampers

August 1, 2000
Author(s)
Fahim Sadek, B Mohraz, Michael A. Riley
Passive energy dissipation devices are used to reduce the damaging effects of earthquakes. These devices can absorb a portion of the earthquake-induced energy in structures and thus reduce the energy demand on structural members. Wide acceptance of these

Microcalorimeter EDS: Benefits and Drawbacks

August 1, 2000
Author(s)
David A. Wollman, Dale Newbury, Sae Woo Nam, Gene C. Hilton, Kent D. Irwin, David A. Rudman, Steven Deiker, Norman F. Bergren, John M. Martinis
The commercial introduction of high-count-rate, near-room-temperature silicon drift detectors (presently available) and high-energy-resolution cryogenic microcalorimeters (forthcoming) is an exciting development in x-ray microanalysis, in which detector

Model of Particle Growth in Silane Discharges

August 1, 2000
Author(s)
Alan Gallagher
The growth of silicon particles in the neutral plasma region of pure silane, rf capacitively coupled, steady-state discharges is calculated with a homogenous, plasma-chemistry model. Plasma conditions are typical of those used in hydrogenated amorphous

Molecular Orientation of Single and Two-Armed Monodendron Semifluorinated Chains on Soft and Hard Surfaces Studied Using NEXAFS

August 1, 2000
Author(s)
Jan Genzer, E Sivaniah, E K. Kramer, J G. Wang, M Xiang, K Char, Christopher K. Ober, Robert A. Bubeck, Daniel A. Fischer, M Graupe, R Colorado, O E. Shmakova, T R. Lee
Near-edge absorption fine structure (NEXAFS) measurements are used to probe the molecular orientation of semifluorinated (SF) mesogens, -(CH 2)x(CF 2)yF, which are attached to I) the isoprene backbone of polyisoprene or a styrene-isoprene diblock copolymer

Morphological Partitioning of Ethylene Defects in Random Propylene-Ethylene Copolymers

August 1, 2000
Author(s)
R G. Alamo, David L. VanderHart, Marc R. Nyden, L Mandelkern
A series of four propylene/ethylene, metallocene-catalyzed copolymer samples, with ethylene mole fractions ranging from 0.8 to 7.5 mol % and melt-crystallization histories of cooling at 1 C/min, were studied by 13C solid state NMR techniques. The principal

Multizone Modeling as an Indoor Air Quality Design Tool

August 1, 2000
Author(s)
Amy Musser
Increased public awareness and changing industry standards have highlighted the importance of indoor air quality in the building design process. At the same time, many owners would like to construct buildings that conserve energy and minimize environmental
Displaying 47026 - 47050 of 74084