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Displaying 49426 - 49450 of 73697

Effect of Heating Boundary Conditions on Pool Boiling Experiments

October 1, 1999
Author(s)
J Darabi, M M. Ohadi, M A. Fanni-Tabrizi, S V. Dessiatoun, Mark A. Kedzierski
The two widely used experimental methods for pool boiling experiments are evaluated. Boiling heat transfer data employing either the water or electric heating method obtained by various researchers are compared and discussed. The electric heating method is

Effect of Solvent Quality on the Molecualr Dimensions of PAMAM Dendrimers

October 1, 1999
Author(s)
A Topp, Barry J. Bauer, D A. Tomalia, Eric J. Amis
The average dimensions of poly (amido amine) (PAMAM) dendrimers of generation numbers G5 and G8 are measured by small angle neutron scattering as a function of solvents of different quality, of the composition of mixtures of a good solvent and a non

Electron Collision Cross Section Data For Plasma Modeling

October 1, 1999
Author(s)
W M. Huo, Yong Sik Kim
An overview of the current status in electron collision cross section database for plasma modeling is presented. Emphasis is on dissociation, ionization, and dissociative ionization. The effect of the operating conditions on the relative importance of

Energy Conserving Discrete Boltzmann Equation for Nonideal Systems

October 1, 1999
Author(s)
Nicos Martys
The BBGKY formalism is utilized to obtain a set of moment equations to be satisfied by the collision operator in an energy conserving discrete Boltzmann equation for the case of a nonlocal interaction potential. A modified BGK form of the collision

Fast Probing Considerations for On-Machine Inspection of Parts

October 1, 1999
Author(s)
Alice V. Ling, Neil D. Wilkin
A calibration procedure for on-machine probing is developed. This is necessary if the machine is used as a coordinate measuring machine to measure the absolute part dimensions. This is most crucial in turning machines where the turret is unable to go below

Frequency-Dependent Viscosity of Xenon Near the Critical Point

October 1, 1999
Author(s)
Robert F. Berg, Michael R. Moldover, G A. Zimmerli
We used a novel, overdamped oscillator aboard the Space Shuttle to measure the viscosity Η of xenon near its critical density ρ c and temperature T c. In microgravity, useful data were obtained within 0.1 mK of T c, corresponding to a reduced temperature t

Guest Editorial Article (Foreword)

October 1, 1999
Author(s)
Hamid Gharavi, L Hanzo
This article provides a short overview of past and present advancements in mobile communication systems, as well as identifying major challenges for the future generation of wireless technologies. Its main objective is to scan the special issue of the

Kinetic Study of the Reactions of CF 3 O 2 Radicals with Cl and NO

October 1, 1999
Author(s)
F Louis, Donald R. Burgess Jr., M Rayez, J P. Sawerysyn
Kinetic studies of the reactions CF 3O 2 + Cl and CF 3O 2 + NO were performed at room temperature in the gas phase using the discharge flow/mass spectrometric technique (DF/MS). The reactions were investigated under pseudo-first-order conditions with Cl or

Lattice Model of Living Polymerization I. Basic Thermodynamic Properties

October 1, 1999
Author(s)
J Dudowicz, Karl Freed, Jack F. Douglas
A Flory-Huggins type model of living polymerization is formulated, incorporating chain stiffness, variable initiator concentration and polymer-polymer interactions. Basic equilibrium properties [average chain length L, average fraction of associated

Measurement of the Coherence of a Bose-Einstein Condensate

October 1, 1999
Author(s)
Edward W. Hagley, Lu Deng, M M. Kozuma, M Trippenbach, Y B. Band, M Edwards, M R. Doery, Paul S. Julienne, Kristian Helmerson, S L. Rolston, William D. Phillips
We study the coherence properties of a Bose-Einstein condensates using an interference technique. Two 100 ns optical standing wave pulses are applied to a condensate with a variable time delay between them. Each standing wave phase grating makes small
Displaying 49426 - 49450 of 73697
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