Technology Transfers in Underwater Acoustics Commonality between Ocean and Naval Systems Applied in Undersea Warfare and Hydrocarbon Markets

1990 ◽  
pp. 201-214
Author(s):  
Pierre Sabathe ◽  
Hans-Jörgen Alker
Keyword(s):  
Underwater Acoustics ◽  
Technology Transfers

Solid Dispersions: A Review

2014 ◽  
Vol 4 (2) ◽  
Author(s):  
Sumant Saini ◽  
Yashwant .
Keyword(s):  
Solid Dispersions ◽  
Physicochemical Characterization ◽  
Water Soluble ◽  
Absolute Minimum ◽  
Technology Transfers ◽  
Molecular Arrangement ◽  
Water Soluble Drugs ◽  
Carrier Solvent ◽  
Preparation Techniques ◽  
Selection Of

Solid dispersions are one of the most promising strategies to improve the oral bioavailability of poorly water soluble drugs. By reducing drug particle size to the absolute minimum, and hence improving drug wettability, bioavailability may be significantly improved. This article reviews the various preparation techniques for solid dispersion and compiles some of the recent technology transfers. The different types of solid dispersions based on the molecular arrangement have been highlighted. Some of the practical aspects to be considered for the preparation of solid dispersions, such as selection of carrier, solvent and methods of physicochemical characterization, along with an insight into the molecular arrangement of drugs in solid dispersions are also discussed. In this review, it is intended to discuss the recent advances related on the area of solid dispersions.

scholarly journals Bearing and Range Estimation Algorithm for Buried Object in Underwater Acoustics

2009 ◽  
Vol 2009 ◽  
pp. 1-4
Author(s):  
Dong Han ◽  
Caroline Fossati ◽  
Salah Bourennane ◽  
Zineb Saidi
Keyword(s):  
Underwater Acoustics ◽  
Classical Model ◽  
Acoustic Scattering ◽  
Estimation Algorithm ◽  
Signal Classification ◽  
Music Algorithm ◽  
Range Estimation ◽  
Multiple Signal Classification ◽  
Buried Objects ◽  
Buried Object

A new algorithm which associates (Multiple Signal Classification) MUSIC with acoustic scattering model for bearing and range estimation is proposed. This algorithm takes into account the reflection and the refraction of wave in the interface of water-sediment in underwater acoustics. A new directional vector, which contains the Direction-Of-Arrival (DOA) of objects and objects-sensors distances, is used in MUSIC algorithm instead of classical model. The influence of the depth of buried objects is discussed. Finally, the numerical results are given in the case of buried cylindrical shells.

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