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MIXING FOR GENERIC ROUGH SHEAR FLOWS

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Gas mixing enhancement in minichannels using a rotationally oscillatory circular cylinder

Mohsen Cheraghi

Oscillating structures and actuators can induce flow kinematics that enhances mixing. This approach is specifically effective for mixing enhancement in meso-scale channels, where the flow kinematics can be actively controlled using micro-electro-mechanical ...

2012

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Hervé Bourlard, Volkan Cevher, Afsaneh Asaei

We cast the under-determined convolutive speech separation as sparse approximation of the spatial spectra of the mixing sources. In this framework we compare and contrast the major practical algorithms for structured sparse recovery of speech signal. Speci ...

2012

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Hervé Bourlard, Volkan Cevher, Afsaneh Asaei

2012

Effect of mixing on the early hydration of alite and OPC systems

Karen Scrivener, Emmanuel Gallucci, Patrick Juilland, Aditya Kumar

The kinetics of hydration of cementitious materials is sensitive to the mixing procedure. High shear mixing conditions lead to an increase in the kinetics of hydration at early age compared to low shearing conditions such as hand mixing. In this study the ...

Pergamon-Elsevier Science Ltd2012

Single Active Nanoelectromechanical Tuning Fork Front-End Radio-Frequency Receiver

Mihai Adrian Ionescu, Alexandru Rusu, Sebastian Thimotee Bartsch

Nanoelectromechanical systems (NEMS) offer the potential to revolutionize fundamental methods employed for signal processing in today's telecommunication systems,1-4 owing to their spectral purity and the prospect of integration with existing technology. I ...

Institute of Physics2012

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Mixing is an essential part of chemical processes. In the present work, homogeneous mixing at relatively high throughput for a single microchannel (of 1-18 mL/min) was investigated in microchannels with different dimensions, cross sections and mixing eleme ...

2011

Determination of a scale-up factor from mixing time studies in orbitally shaken bioreactors

Christos Comninellis, Florian Maria Wurm, Mohamed Farhat, David Hacker, Stéphanie Tissot

Efficient mixing in bioreactors is essential in order to avoid concentration gradients which can be harmful for mammalian cells. To study mixing and its scalability in orbitally shaken cylindrical bioreactors, we measured mixing times in containers with no ...

Elsevier2010

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Wave and tide are important forcing factors that typically co-exist in coastal environments. A numerical study was conducted to investigate individual and combined effects of these forces on flow and mixing processes in a near-shore subterranean estuary. A ...

American Geophysical Union2010

Parametric joint-coding of audio sources

Christof Faller

The following coding scenario is addressed: A number of audio source signals need to be transmitted or stored for the purpose of mixing wave field synthesis, multi channel surround, or stereo signals after decoding the source signals. The proposed techniqu ...

2007

In this short review paper, two definitions of ice slurry are presented. Furthermore, ice slurry systems and the most relevant components of ice slurry systems are described. Such equipment are ice slurry generators (different physical principles), storage ...

International Institute of Refrigeration IIR-IIF2004