Concept

Fraction molaire

Publications associées (94)

Novel applications of poly(ethylene glycol)-bl-poly(propylene sulfide) block copolymers

Block copolymers are comprised of repeating chemical groups (blocks) which commonly contain at least one hydrophilic block coupled to at least one hydrophobic block, forming an amphipathic macromolecule. This molecular arrangement drives the self assembly ...

EPFL2008

Effect of coadsorbent on the photovoltaic performance of squaraine sensitized nanocrystalline solar cells

Michael Graetzel, Jun Ho Yum, Robin Humphry-Baker, Soo-Jin Moon, Thomas Geiger

The effect of chenodeoxycholic acid as the coadsorbent with a squaraine sensitizer on TiO2 nanocrystalline solar cells was investigated, and it was found that the coadsorbent prevents the squaraine sensitizer from aggregating on the TiO2 nanoparticles but ...

2008

Asymmetrical flow field-flow fractionation coupled to multi-angle light scattering detector: optimization of crossflow rate, carrier characteristics and injected mass in alginate separation

Enrica Alasonati

The coupling of the flow field flow fractionation to differential refractive index (DRI) and multi-angle laser light scattering detectors is a powerful tool for characterizing charged polysaccharides such as alginate. However, the correct interpretation of ...

2007

Mass spectrometric analysis of ubiquitin-platinum interactions of leading anticancer drugs: MALDI versus ESI

Paul Joseph Dyson, Christian Hartinger, Angela Casini, Wee Han Ang

The protein binding of anticancer metallodrugs is regarded as an important part in their mode of action both for delivering the active moiety into the tumor but also being responsible for deactivation and/or unwanted side effects. Characterization of prote ...

2007

Synchronization of ice core records via atmospheric gases

Jérôme Chappellaz, Zheng Wang

We present the first reconstruction of the Northern Hemisphere (NH) high latitude atmospheric carbon monoxide (CO) mole fraction from Greenland firn air. Firn air samples were collected at three deep ice core sites in Greenland (NGRIP in 2001, Summit in 20 ...

Copernicus GmbH2007

Reduced complexity attacks on the alternating step generator

Willi Meier, Shahram Khazaei, Simon Fischer

In this paper, we present some reduced complexity attacks on the Alternating Step Generator (ASG). The attacks are based on a quite general framework and mostly benefit from the low sampling resistance of the ASG, and of an abnormal behavior related to the ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2007

Toxicity assessment of the main pesticides used in Costa Rica

Raphael Charles

The impacts of the 30 active substances, most used in Costa Rica (reference year 1998), are evaluated using two models originally developed to support comparative assertions in the context of the life cycle assessment: the multimedia fate, exposure and eff ...

2007

Asymmetrical Flow Field Flow Fractionation–Multidetection System as a Tool for Studying Metal – Alginate Interaction

Enrica Alasonati

The present study explores the potential use of asymmetrical flow field flow fractionation (aFlFFF) with a multidetection system for the study of metal–alginate interactions. aFlFFF, coupled on-line to a differential refractive index and seven angle laser ...

2006

Isomerization mechanisms of a labile Co(II) octahedral complex

André Merbach, Lothar Helm, Fabrice Riblet

The labile cobalt (II) complex [Co(TUF)2(Pic)2] with 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione (TUF) bidentate and 4-methylpyridine (Pic) monodentate ligands was studied by variable temp. (VT) 19F NMR from 184 to 312 K. In contrast to the solid state, ...

2006

A homotetrameric kinesin-5, KLP61F, bundles microtubules and antagonizes Ncd in motility assays

Henning Paul-Julius Stahlberg, Li Tao, Alex Mogilner

Background: Mitosis depends upon the cooperative action of multiple microtubule (MT)-based motors. Among these, a kinesin-5, KLP61 F, and the kinesin-14, Ncd, are proposed to generate antagonistic-sliding forces that control the spacing of the spindle pole ...

Elsevier BV2006

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