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Displaying 426 - 450 of 1184

Phase Equilibria and Crystal Chemistry of the CaO-?Sm2O3-CoOz System at 885 degC in Air

June 27, 2015
Author(s)
Winnie K. Wong-Ng, William J. Laws, Saul H. Lapidus, James A. Kaduk
The CaO-¿Sm2O3-CoOz system prepared at 885 °C in air consists of two calcium cobaltate compounds, namely, the 2D thermoelectric oxide solid solution, (Ca3-xSmx)Co4O9-z (0 x 0.5) which has a misfit layered structure, and the 1D Ca3Co2O6 which consists of

Density and Speed of Sound Measurements of 1- and 2-Butanol

November 12, 2009
Author(s)
Stephanie L. Outcalt, Arno R. Laesecke, Tara J. Fortin
The density and speed of sound of 1- and 2-butanol have been measured using two instruments. Both instruments use the vibrating-tube method for measuring density. Ambient pressure (83 kPa) density and speed of sound measurements were carried out from 278

Dynamics of Wormlike Micelles in Elongational Flows

January 1, 2006
Author(s)
Philip A. Stone, Paul Dalhaimer, Dennis E. Discher, Eric J. Amis, Steven D. Hudson, Kalman D. Migler
Micelles formed of amphiphilic diblock copolymers may have applications in drug delivery and in understanding the physics of biological structures. Wormlike micelles, in particular, provide an opportunity to study the behavior of semiflexible rods in

Chip-scale atomic magnetometer

December 27, 2004
Author(s)
P Schwindt, Svenja A. Knappe, V Shah, Leo W. Hollberg, John Kitching, Li-Anne Liew, John Moreland
… with an atom shot-noise limited sensitivity of 0.05 pT Hz-1/2. …

Effect of Caged Fluorescent Dye on the Electroosmotic Mobility in Microchannels

March 1, 2003
Author(s)
David J. Ross, Laurie E. Locascio
We report on measurements of electroosmotic mobility in polymer microchannels and silica capillaries with and without the addition of a caged fluorescein dye to the buffer. For PMMA microchannels, the mobility was found to increase from (2.6 0.1) 10-4 cm2

Effective Hamiltonian Study of PZT 95/5

January 21, 2002
Author(s)
K Leung, Eric J. Cockayne, A F. Wright
An effective Hamiltonian is constructed for PbZr0.95Ti0.05O3. It is parameterized using ab initio results computed in the virtual crystal approximation. The phase diagram depends sensitively on the energetic competition between the stable orthorhombic

The Effect of Pb Contamination on the Solidification Behavior of Sn-Bi Solders

January 1, 2001
Author(s)
Kil-Won Moon, William J. Boettinger, Ursula R. Kattner, C A. Handwerker, D J. Lee
This paper presents experimental results and theoretical calculations to evaluate the effects of Pb contamination on the solidification behavior of Sn-x mass Bi alloys (x = 5, 10, and 58 mass %). The pasty (mushy) range, the type of solidification path

Convective Accelerometer and Tilt Sensor in CMOS Technology

November 12, 1998
Author(s)
V. Milanovic, E. D. Bowen, N. H. Tea, Michael Gaitan, Mona E. Zaghloul
This paper describes a CMOS implementation of novel ID and 2D accelerometers that operate based on heat convection, requiring no solid proof mass. The devices consist of micromachined microheaters and thermocouple sensors separated by a gap and placed in

Doppler Sensitivity and Its Effect on Transatlantic TWSTFT Links

December 6, 2016
Author(s)
Shengkang Zhang, Tom Parker, Victor S. Zhang
Two Way Satellite Time and Frequency Transfer (TWSTFT or TW) is a commonly used technique to compare time and frequency precisely among the time and frequency laboratories. The precision of TWSTFT on time comparison is about 0.5 ns or even better, which

Comparison Testing Protocol for Firebrand Penetration through Building Vents: Summary of BRI/NIST Full Scale and NIST Reduced Scale Results

January 25, 2010
Author(s)
Samuel L. Manzello, Seul-Hyun Park, John R. Shields, Yoshihiko Hayashi, Sayaka Suzuki
An ASTM task group on vents, organized within Subcommittee E05.14.06, External Fire Exposures, has developed a reduced scale test method (not presently a standard) aimed at evaluating the ability of vents to resist firebrand intrusion into attic and crawl
Displaying 426 - 450 of 1184
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