Concept

Chromatographie sur couche mince

Publications associées (45)

Microfluidic patterning of alginate hydrogels

In this article the authors present techniques which allow the microfluidic design of alginate microgels with layer composition on a chip. The hydrogel is created by combining two laminar flows of the gel precursor solutions-a calcium solution and an algin ...

American Vacuum Society2007

Growth mechanism of solution-deposited layers of the charge-transfer salt CuDDQ

Klaus Kern, Marko Burghard, Stephan Rauschenbach, Ralf Thomas Weitz

Charge-transfer (CT) salts such as copper-2,3-dichloro-5,6-dicyano-p-benzoquinone (CuDDQ) are promising components of reversible resistive memory switching devices. In the study presented here, we report on the composition of CuDDQ layers grown from aceton ...

2007

Nanoparticules à noyau métallique recouvert de silice

Heinrich Hofmann, Alke Fink

The invention relates to nanoparticles based on a metal, on a metal alloy or on a metal derivative coated with a silica layer, in which the silica is crystalline silica, in particular crystalline silica in the cristobalite form. They may be prepared from n ...

2006

The possible role of hydroxylation in the detoxification of atrazine in mature vetiver (Chrysopogon zizanioides nash) grown in hydroponics

Jean-Paul Schwitzguebel, Sylvie Vullioud-Marcacci

The resistance mechanism of vetiver (Chrysopogon zizanioides) to atrazine was investigated to evaluate its potential for phytoremediation of environment contaminated with the herbicide. Plants known to metabolise atrazinerely on hydroxylation mediated by b ...

2005

Numerical Simulation of Two-Phase Partition Chromatography in Microchannels for Moderated Log P Measurements

Hubert Girault, Pierre-Alain Carrupt

A finite element simulation has been used in order to study the partition chromatography process of one species between an aqueous mobile phase and an organic stationary phase located at the bottom of a rectangular microchannel. The transient model incorpo ...

Elsevier2005

Experimental and numerical modelling comparative study of ion-exchange chromatography

Chromatography is increasingly being used for large-scale preparative separation of precious biological components such as recombinant proteins and DNA. Several kinds of mathematical models are used to describe the liquid chromatography process. The aim of ...

EPFL2004

Structure and characterization of CI3+[Al{OC(CF3)3}4]-; Lewis acidities of CX3+ and BX3

Ines Raabe, Nils Trapp

Prepn. of the title compd. (I) from starting materials CI4 and AgAl{OC(CF3)3}4 was performed with the complete exclusion of light and with carefully purified diiodine-free CI4, since CI4 decomps. within minutes in soln. in light with formation of I2 ...

2003

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry in the subunit stoichiometry study of high mass non-covalent complexes

Françoise Gisou van der Goot Grunberg

This study explores the potential of MALDI-TOF MS for the mass measurement of large non-covalent protein complexes. The following non-covalent complexes have been investigated: aerolysin from Aeromonas hydrophila (335 kDa) and α-haemolysin from Staphylococ ...

1997

Characterization of near edge optical transitions in undoped and doped GaN/sapphire grown by MOVPE, HVPE and GSMBE

Nicolas Grandjean

We report a comparative study by luminescence and reflectivity of GaN grown on sapphire by MOVPE, HVPE and GSMBE. Whatever the growth technique, undoped GaN shows well resolved reflectivity spectra, allowing hetero-epitaxial strain to be taken into account ...

Materials Research Society1997

Spectroscopie FTIR quantitative de réflectance et transmittance diffuses

Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) has been established as a good and relatively sensitive method for qualitative analysis of powders and rough surfaces. The technique is non-destructive and high quality spectra can be eas ...

EPFL1991

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search