Concept

Membrane hémi-perméable

Publications associées (787)

Characterization of Annular Two-Phase Down Flow Using Non Intrusive Optical Techniques for Flow Patterns, Entrainment, Film Thickness and Velocity Profile

In this study, adiabatic vertical cocurrent downward air-water flow in an 8.8 mm internal diameter channel was investigated using non intrusive optical techniques. Flow pattern tests were performed to assess the influence of the inlet device, of the test s ...

EPFL2012

To a cultural perspective of mixed reality events: a case study of event overflow in operas and concerts in mixed reality

Jean-François Lucas

Mixed reality defines the sharing of a space-time between the real and the virtual world. The definition of this concept is further extended when virtual worlds such as Second Life (SL) are included. Through cultural events such as concerts and operas, we ...

2012

Cortical dynein is critical for proper spindle positioning in human cells

Pierre Gönczy, Coralie Busso, Sachin Kotak

Correct spindle positioning is fundamental for proper cell division during development and in stem cell lineages. Dynein and an evolutionarily conserved ternary complex (nuclear mitotic apparatus protein [NuMA]–LGN–Gα in human cells and LIN-5–GPR-1/2–Gα in ...

Rockefeller Univ Press2012

Size-selective diffusion in nanoporous alumina membranes for a glucose affinity sensor

Peter Ryser, Jean-Michel Sallese, Eric Meurville, Christophe Boss

The retention, diffusion and structural properties of 2–4 nm nanoporous alumina membranes were investigated in view of their integration as size-selective interface in a glucose sensor. These membranes exhibit remarkable glucose diffusion properties with o ...

Elsevier2012

Dispersible exfoliated zeolite nanosheets and their application as a selective membrane

Xiuwei Zhang, Matteo Cococcioni, Sanjeev Kumar

Thin zeolite films are attractive for a wide range of applications, including molecular sieve membranes, catalytic membrane reactors, permeation barriers, and low-dielectric-constant materials. Synthesis of thin zeolite films using high-aspect-ratio zeolit ...

2011

Dual-wavelength Digital Holography for quantification of cell volume and integral refractive index (RI)

Pierre Magistretti, Christian Depeursinge, Pierre Marquet, Jonas Kühn, Daniel Boss

Quantitative Phase Imaging techniques such as DHM have emerged recently in life sciences and can be aimed at monitoring and quantifying non-invasively dynamic cellular processes modifying cell morphology and/or content. Concretely, the DHM phase signal dep ...

SPIE2011

Chemical Biology Approaches to Membrane Homeostasis and Function

Kai Johnsson, Christian Heinis, Gerardo Turcatti, Luc Reymond, Howard Riezman, Stefan Matile

The study of membranes is at a turning point. New theories about membrane structure and function have recently been proposed, however, new technologies, combining chemical, physical, and biochemical approaches are necessary to test these hypotheses. In par ...

2011

Quantitative Photo Activated Localization Microscopy: Unraveling the Effects of Photoblinking

Ursula Röthlisberger, Aleksandra Radenovic, Stefano Vanni, Paolo Annibale, Marco Scarselli

In this work we discuss how to use photophysical information for improved quantitative measurements using Photo Activated Localization Microscopy (PALM) imaging. We introduce a method that reliably estimates the number of photoblinking molecules present in ...

Public Library of Science2011

STED Nanoscopy Reveals Molecular Details of Cholesterol- and Cytoskeleton-Modulated Lipid Interactions in Living Cells

Marcel Leutenegger

Details about molecular membrane dynamics in living cells, such as lipid-protein interactions, are often hidden from the observer because of the limited spatial resolution of conventional far-field optical microscopy. The superior spatial resolution of sti ...

Elsevier2011

Solid-state nanopore array membranes patterned by electron beam lithography, nanosphere lithography and aluminum anodization

Jürgen Brugger, Andreea Veronica Savu, Nicolas Blondiaux, Songmei Wu, Oscar Vazquez Mena, Harry Heinzelmann, Mona Julia Katharina Klein, Vaida Auzelyte, Raphaël Pugin, Franck Montagne

We present the fabrication of thin membranes with dense arrays of nanometer and submicrometer pore arrays by the integration of standard micromachining with three pore patterning techniques: electron beam lithography (EBL), nanosphere lithography (NSL) and ...

2011

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