We report an extensive study of the concentration process of aqueous polymer solutions confined within microfluidic channels, owing to the pervaporation of water through the matrix of the chip. Concentration of polymer continuously increases up to the formation of a dense material which eventually invades the channel. This technology can be used to fabricate micro-composites of different shapes...

This paper addresses the subject which is too often overlooked in the analysis of a geometric model for wireless channel – the axioms corresponding to a priori properties of the channel that is modeled using geometric approach must represent realistic wave propagation. When constructing a model of propagation channel, people often create a substitute by giving an arbitrary shape or form to scat...

This paper presents the results of channel cracking experiments performed on a multilayered structure. Room temperature creep behavior of a metallic underlayer was studied by using a newly developed channel cracking method. By the analysis of a channel crack propagating under tensile load in an elastic Si3N4 topical layer, the creep properties of an aluminum underlayer were determined. The expe...

the mechanism of flow and sediment transport in channel bend is much complex. because of secondary current, the sediment moves away from outer bank toward inner bank and therefore outer bank of the bend is one of best positions for lateral diversion. in this paper, the mechanism of sediment transport was simulated with ssiim software in the u shape channel with lateral intake. in order to verif...

We investigated the feasibility of the coexistence of CDMATDD micro cells under a CDMA-FDD macro cell network with both sharing the same frequency band. A dynamic channel allocation (DCA) algorithm decides on the basis of mutual interference which FDD band is to use for the micro cell TDD channel. On the assumption of giving the macro cell higher priority we investigated the lower bound probabi...

this study seeks to examine how a company can select the best intermediary for its marketing channels with minimum of criteria and time. a theoretical framework is proposed based on the most important tasks of intermediary and the criteria to measure them. there are four basic tasks and thirty criteria in three independent levels. subsequently, an exploratory case study in iranian food industry...

In the emerging field of deformable microfluidics, we propose a new geometry in which height and angle channel are controlled, thanks to deformability microfluidic elastomer down thicknesses few microns. The particularity our set-up is that under study fully closed at rest, reveals especially well suited address micro-nanoconfinement problems such as clogging, transport selectivity flow rectifi...

In this paper the problems of state estimation, tracking control and shape control in a micro-cantilever beam with nonlinear electrostatic actuation are investigated. The system’s partial differential equation of motion is converted into a set of ordinary differential equations by projection method. Observabillity of the system is proven and a state estimation system is designed using extended ...

Microfluidic channel systems used in bio-analytical applications are fabricated using technologies derived from microelectronics industry including lithography, wet etching, and bonding of substrates. One important class of these channel system uses capillary zone electrophoresis to separate and detect chemical species. This technique separates chemical species suspended in a liquid buffer base...