Berthier, J., Chatelain, F.
Polymerase chain reaction is the most usual way to amplify DNA strands for detection and biorecognition. However efficient biorecognition requires to perform many different PCRs at the same time. We present here a new concept of simultaneous PCRs in capillary tubes and more specifically the dimensioning of such a microsystem. The concept consists in performing different PCRs in annular rings ...
EIHES, Ecole d’Ingénieurs de Genève
Electron interferometry using the Aharonov-Bohm (AB) effect finds many applications in industrial areas such as future nanocomputer technologies, physical random number generators, electron phase microscopy and holography, to name just a few. The presence of a confined magnetic field surrounded by the interferometer arms, as originally proposed by Aharonov and Bohm is however a source of ...
Khodabakhshi, G., Parvazinia, M.
Loughborough University, U.K.
The standard Galerkin method employing standard finite elements is not a robust approach for transport problmes exhibiting multiscale behaviour . The elements enriched with bubble functions improve the stability of the solution dramatically. It is shown that basically all of stable methods are derived from particular class of subgrid scale models . To prevent it, multiscale finite ...
Prokofiev, D.1, Dunec, J.2
1 Shell International Exploration and Production
2 COMSOL, Inc.
The equations describing poroelastic materials are developed in detail and compared to those decribing Darcy flow and structural mechanics in COMSOL Multiphysics. The difference between the coupled poroelastic equations and those in COMSOL Multiphysics is shown to be an additional source term both in Darcy and in structures. Simple verification models are run to check the accuracy and behavior ...
Taborda, R.1, Ornelas Marques, F.1, Bose, S.2
1 Dep. Geologia and LATTEX, Fac. Ciências, Univ. Lisboa, Lisbon, Portugal
2 GEOMODELS and CGUL, Fac. Ciências, Univ. Lisboa, Lisbon, Portugal
Theoretical and experimental studies on the rotation of rigid inclusions under simple shear flow have typically considered infinite width shear zones and perfect attachment of inclusion to the matrix. According to these models, during progressive simple shear a coherent object would continuously rotate synthetically, which is not the case in many natural ductile shear zones. In this work we ...
Calibrating electric instruments of the Huygens probe and modelling the dielectric properties of the atmosphere and of the surface of titan
Centre d'Etude des Environnements Terrestre et Planétaires (CETP), Saint Maur des Fossès, France
In 14 January, 2005, the Huygens Probe has descent through the atmosphere of Titan and has survived to touchdown, collecting data in the atmosphere and on the surface of the largest moon of Saturn. One of the instruments, the Huygens Atmospheric Structure Instrument (HASI), includes the Permittivity, Waves, and Altimetry (PWA) analyser, which is a subsystem for studying the electric activity of ...
Jin, L.Z.1, Ssemakula, H.2, Sandström, R.1
1 Department of Materials Science and Engineering, Royal Institute of Technology, Sweden
2 Department of Production Engineering, Royal Institute of Technology, Sweden
Flow behaviour of phosphorus-deoxidised copper in plane-strain hot extrusion with an insertion in the die has been studied through a finite-element model consisting of fluid dynamics and heat transfer approaches. The billet material is considered as rigid-visco-plastic and rate-sensitive. A dynamic viscosity, which is strain-rate and temperature dependent, has been integrated into the model. ...
Fachhochschule Ostfriesland/Oldenburg/Wilhelmshaven, FB Wirtschaftsingenieurwesen, Wilhelmshaven
Unter Elektrotechnikausbildung ist in diesem Papier die Hochschulausbildung und insbeson-dere die in den Fächern Allgemeine Elektrotechnik und Theoretische Elektrotechnik zu ver-stehen. Üblicherweise wird das Gebäude der Elektrotechnik auf den Erfahrungssätzen des Strömungs-, elektrostatischen und magnetischen Feldes aufgebaut. Zur Motivation und Fes-tigung des Wissens werden dann in den ...
Rodríguez Rodríguez, E.1, Godinez Fernández, R.2, Barrales Guadarrama, R.1, Vázquez Cerón, E.1
1 Universidad Autónoma Metropolitana- Azc, Azcapotzalco, México, D.F.C.P.
2 Universidad Autónoma Metropolitana-Izt
The axon in one of the most important components in nervous impulse transmission. It is very important to understand how the electric potential changes along the axon, using the telegraph equation. In the following simulation with FEMLAB we show the transmission and diffusion along the axon in 3D when a squared voltage is applied. The simulation is used for educational purposes in ...
Fichet, D.1, Lesage, F.1, Ventenat, V.2, Latifi, M.A.2
1 Laboratoire des Sciences du Génie Chimique, CNRS-ENSIC, Nancy Cedex, France
2 Centre de recherche Decathlon, Villeneuve d’Ascq, France
This paper deals with experimentation, modelling, simulation and optimisation of a Moisture Management Tester (MMT) which is used to determine the liquid spreading and transfer rates of a fabric. A 3D model was developed and implemented within FEMLAB. It consists of partial differential equations describing the mass balance of water adsorbed on the fibres and water moving in the free volume ...