A general method of modelling sound propagation in layered media

1995 ◽  
Vol 183 (1) ◽  
pp. 129-142 ◽  
Author(s):  
B. Brouard ◽  
D. Lafarge ◽  
J.-F. Allard
Keyword(s):  
Sound Propagation ◽  
Layered Media ◽  
General Method

scholarly journals Sound Propagation in Layered Media with a Rough Interface

1957 ◽  
Vol 29 (11) ◽  
pp. 1264-1264
Author(s):  
R. K. Eby ◽  
A. O. Williams
Keyword(s):  
Sound Propagation ◽  
Layered Media ◽  
Rough Interface

Sound Propagation in Dissipative Layered Media

1957 ◽  
Vol 29 (11) ◽  
pp. 1264-1264
Author(s):  
R. P. Ryan ◽  
R. K. Eby ◽  
A. O. Williams
Keyword(s):  
Sound Propagation ◽  
Layered Media

A General Method for Spectrometer Design in the Scoff Approximation

1976 ◽  
Vol 34 ◽  
pp. 538-539
Author(s):  
J. R. Fields
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Energy Analysis ◽  
Incident Beam ◽  
Scanning Transmission Electron Microscope ◽  
Chemical Identification ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
General Method

The energy analysis of electrons scattered by a specimen in a scanning transmission electron microscope can improve contrast as well as aid in chemical identification. In so far as energy analysis is useful, one would like to be able to design a spectrometer which is tailored to his particular needs. In our own case, we require a spectrometer which will accept a parallel incident beam and which will focus the electrons in both the median and perpendicular planes. In addition, since we intend to follow the spectrometer by a detector array rather than a single energy selecting slit, we need as great a dispersion as possible. Therefore, we would like to follow our spectrometer by a magnifying lens. Consequently, the line along which electrons of varying energy are dispersed must be normal to the direction of the central ray at the spectrometer exit.

Phase behavior of cationic and anionic surfactants at low concentrations

1992 ◽  
Vol 50 (1) ◽  
pp. 694-695
Author(s):  
E. Naranjo
Keyword(s):  
Phase Behavior ◽  
Structural Characterization ◽  
Dynamic Systems ◽  
Anionic Surfactants ◽  
Intermolecular Forces ◽  
Stable Form ◽  
Surfactant Mixtures ◽  
Low Concentrations ◽  
Cationic And Anionic Surfactants ◽  
General Method

Equilibrium vesicles, those which are the stable form of aggregation and form spontaneously on mixing surfactant with water, have never been demonstrated in single component bilayers and only rarely in lipid or surfactant mixtures. Designing a simple and general method for producing spontaneous and stable vesicles depends on a better understanding of the thermodynamics of aggregation, the interplay of intermolecular forces in surfactants, and an efficient way of doing structural characterization in dynamic systems.

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