Publications associées à On the Applicability of Oil and Dye Technique During the Design Phase and Operation of Experimental Rigs

The SONATA data format for efficient description of large-scale network models

James Gonzalo King, Juan Bautista Hernando Vieites, Eilif Benjamin Muller, Jean-Denis Georges Emile Courcol, Werner Alfons Hilda Van Geit, Michael Emiel Gevaert, Judit Planas Carbonell, Adrien Michel Achille Devresse

Increasing availability of comprehensive experimental datasets and of high-performance computing resources are driving rapid growth in scale, complexity, and biological realism of computational models in neuroscience. To support construction and simulation ...

2020

Analysis of double cross-slip of pyramidal I < c plus a > screw dislocations and implications for ductility in Mg alloys

William Curtin, Zhaoxuan Wu, Rasool Ahmad

Solute accelerated cross-slip of pyramidal < c + a > screw dislocations has recently been recognized as a crucial mechanism in enhancing the ductility of solid-solution Mg alloys. In pure Mg, cross-slip is ineffective owing to the energy difference between ...

PERGAMON-ELSEVIER SCIENCE LTD2020

On the physical mechanism of tip vortex cavitation hysteresis

Mohamed Farhat, Martino Reclari, Matthieu Dreyer, Ali Amini

Inception and desinence thresholds of tip vortex cavitation (TVC), generated by an elliptical NACA 16-020 hydrofoil, are measured at different flow conditions for various gas contents. It is observed that TVC often disappears at cavitation indices signific ...

SPRINGER2019

The Role of Impeller Outflow Conditions on the Performance of Vaned Diffusers

Jürg Alexander Schiffmann

Highly loaded impellers, typically used in turbocharger and gas turbine applications, exhaust an unsteady, transonic flow that is nonuniform across the span and pitch and swirling at angles approaching tangential. With the exception of the flow angle, conf ...

American Society of Mechanical Engineers2017

Computational Fluid Dynamics-Based Pump Redesign to Improve Efficiency and Decrease Unsteady Radial Forces

Ning Chu, Linlin Cao, Shuai Yang, Peng Wu

In this study, a double volute centrifugal pump with relative low efficiency and high vibration is redesigned to improve the efficiency and reduce the unsteady radial forces with the aid of unsteady computational fluid dynamics (CFD) analysis. The concept ...

Asme2017

Rationalizing Fluorescence Quenching in meso-BODIPY Dyes

Anne-Clémence Corminboeuf, Alberto Fabrizio, Antonio Prlj

meso-Substituted boron-dipyrromethene (BODIPY) dyes are a puzzling class of molecules, which feature contrasting emissive behaviors. The full mechanistic picture for these distinctive properties is still missing. Using static and dynamic excited state comp ...

Royal Soc Chemistry2016

Preparation of cationic azo compounds

Kay Severin, Alexander Tskhovrebov

The present invention relates to a novel method for preparing cationic azo compounds, which preferably can be used as dyes. Further, the invention relates to novel cationic azo compounds and the use of N2O in the synthesis of azo-imidazolium dyes. ...

2016

Improved Variational Denoising of Flow Fields with Application to Phase-Contrast MRI Data

Nikolaos Stergiopoulos, Michaël Unser, Emrah Bostan, Orestis Vardoulis, Stamatios Lefkimmiatis

We propose a new variational framework for the problem of reconstructing flow fields from noisy measurements. The formalism is based on regularizers penalizing the singular values of the Jacobian of the field. Specifically, we rely on the nuclear norm. Our ...

IEEE Institute of Electrical and Electronics Engineers2015

Influence of DNA Binding Dyes on Bare DNA Structure Studied with Atomic Force Microscopy

Giovanni Dietler, Aleksandre Japaridze, Sylvain Renevey, Aleksandr Benke

Fluorescent dyes are widely used for staining and visualization of DNA in optical microscopy based methods. Even though for some dyes the mechanism of binding is known, how this binding affects DNA remains poorly understood. Here we present a novel experim ...

American Chemical Society2015

New evidence for hybrid acrylic/TiO2 films inducing bacterial inactivation under low intensity simulated sunlight

Juan Kiwi, César Pulgarin, Sami Rtimi

This study addresses the preparation and characterization of hybrid films prepared from Titanium dioxide (TiO2) Pickering stabilized acrylic polymeric dispersion as well as their bacterial inactivation efficiency under sunlight irradiation. Complete bacter ...

Elsevier2015

Head losses in junction manholes for free surface flows in circular conduits

Michael Pfister, Corrado Gisonni

Former studies on combining flows resulted in an efficient layout of sewer junctions operated under supercritical approach flow conditions. Straight extensions allowed a reduction in the shock wave heights generated by the merging flows, so that the global ...

Asce-Amer Soc Civil Engineers2014

Reduced Dyes Enhance Single-Molecule Localization Density for Live Superresolution Imaging

Luc Reymond, Grazvydas Lukinavicius, Suliana Manley, Aleksandr Benke, Lina Carlini

Cell-permeable rhodamine dyes are reductively quenched by NaBH4 into a non-fluorescent leuco-rhodamine form. Quenching is reversible, and their fluorescence is recovered when the dyes are oxidized. In living cells, oxidation occurs spontaneously, and can r ...

Wiley-V C H Verlag Gmbh2014

Photocatalytic degradation of Remazol Brilliant Blue (R) by sol-gel derived carbon-doped TiO2

Ravindranathan Thampi, Michael Jon Mattle

A simple, cheap and reproducible method to produce a C-doped TiO2 photocatalyst is presented, which can harvest visible light. This doped catalyst is able to degrade a stable organic dye molecule, Remazol Brilliant Blue (R) (RBB), under sunlight and visibl ...

Elsevier Science Bv2013

Experimental Investigation of the Aeroelastic Stability of an Annular Compressor Cascade at Reverse Flow Conditions

Virginie Anne Chenaux

Compressor surge events are unsafe operating regimes yielding highly unsteady flow fields in which complex aeroelastic phenomena occur. If the blade flutter and forced response behaviour (i.e. aeroelastic stability) can be predicted reliably for normal flo ...

EPFL2012

Resistive Programmable Through Silicon Vias for Reconfigurable 3D Fabrics

Yusuf Leblebici, Giovanni De Micheli, Michail Zervas, Yüksel Temiz, Davide Sacchetto

In this letter we report on the fabrication and characterization of titanium dioxide (TiO2)-based resistive RAM (ReRAM) co-integration with 380 ìm-height Cu Through Silicon Via (TSV) arrays for programmable 3D interconnects. Nonvolatile resistive switching ...

Institute of Electrical and Electronics Engineers2012

Color conversion films comprising polymer-substituted organic fluorescent dyes

Libero Zuppiroli, Rolando Ferrini, Stéphane Suarez, Holger Frauenrath, Roman Niklaus Marty

The present invention concerns a color conversion film comprising at least one active layer, said layer comprising an organic fluorescent dye containing a fluorescent core, wherein said dye is substituted with at least one polymer segment. It also concerns ...

2012

Measured binding coefficients for iodine and ruthenium dyes; implications for recombination in dye sensitised solar cells

Shaik Mohammed Zakeeruddin, Robin Humphry-Baker, Xiong Li, Filippo de Angelis

We have measured the binding coefficients of iodine to three dyes used in Dye Sensitised Solar Cells (DSSCs). Binding coefficients are quantified via the effect of iodine binding on the UV-vis spectrum of the dye. From iodine titration curves of dye sensit ...

Royal Society of Chemistry2012

Investigation on the Three-Dimensional Flow Mechanisms in Annular Axial Compressor Cascades for Aero Engines with Flow Control by Aspiration on the Hub and on the Blades

Elia Colombo

The axial compressor is an essential component of aero-engines and gas turbines. This work investigates how flow control by aspiration applied to the hub and to the blades of axial compressor wheels can improve the static pressure rise by preventing detrim ...

EPFL2011

Characterization of the Flow Generated in an Annular Test Facility

Peter Ott, Elia Colombo, Dominique Charbonnier, Cécile Deslot

Annular cascades are particularly useful to study the three dimensional phenomena encountered in turbomachines. The Non-Rotating Annular Test Facility of the Swiss Federal Institute of Technology in Lausanne (EPFL) consists in a radial-axial inlet nozzle a ...

2011

Aeroelasticity at Reversed Flow Conditions – Part 1: Numerical and Experimental Investigations of a Compressor Cascade with Controlled Vibration

Peter Ott, Virginie Anne Chenaux

The prediction of flutter and forced response at normal flow conditions has become a standard procedure during the design of compressor airfoils. But at severe off-design conditions, the flow field becomes very complex, especially during the surge blow-dow ...

2011