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Publications associées (70)

Indentation fracture of gallium arsenide

The scribe and break technique (or dicing) is a widely employed method in the industry of semiconductors to separate infrared laser diodes made from gallium arsenide (GaAs). The scribing step allows to create a precursor crack which is then propagated duri ...

EPFL2007

Plant traits in a state en transition framework as markers of ecosystems response to land-use change

Aurélie Thébault

Understanding and forecasting changes in plant communities, ecosystem properties, and their associated services requires a mechanistic link between community shifts and modifications in ecosystem properties. In this study, we test the hypothesis that plant ...

Ecological Society of America2007

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

Phytoextraction of heavy metals by hyperaccumulating and non hyperaccumulating plants

Claudia Cosio

Although phytoextraction using hyperaccumulating plants is seen as a promising technique, a lack of understanding of the basic physiological, biochemical, and molecular mechanisms involved in heavy metal hyperaccumulation prevents the optimization of the p ...

EPFL2004

Phytolith types and type-frequencies in subalpine-alpine plant species of the European Alps

Biogenic silica extracted from 21 species commonly occurring in subalpine and alpine plant communities in the central Swiss Alps were examined using light and SEM microscopes; 19 species being screened here for the first time. An inventory of phytolith typ ...

2004

Relationships between plant traits and climate in the Mediterranean region: a pollen data analysis

Basil Andrew Stansfield Davis

Question: What are the correlations between the degree of drought stress and temperature, and the adoption of specific adaptive strategies by plants in the Mediterranean region? Location: 602 sites across the Mediterranean region. Method: We considered 12 ...

2004

Imaging cells and tissues with refractive index radiology

Giorgio Margaritondo, Amela Groso, Yong Yang

Can individual cells, including live cells, be imaged using hard x rays? Common wisdom until now required sophisticated staining techniques for this task. We show instead that individual cells and cell details can be detected in culture solution and tissue ...

2004

Climate and interannual variability of the atmosphere-biosphere 13CO2 flux

Jed Oliver Kaplan

We present a bottom-up approach to simulate the terrestrial isotopic carbon variations using the Lund-Potsdam-Jena dynamic global vegetation model (LPJ-DGVM). LPJ is extended to include isotopic fractionation of C-13 at the leaf level during assimilation a ...

2003

The LEAF Platform: Incremental Enhancements for the J2EE

Rachid Guerraoui, Christian Gasser

LEAF, the Lean and Extensible Architectural Framework, is an enhancement wrapper for J2EE implementations. Basically, LEAF fixes some identified J2EE issues and extends, as well as simplifies, the use of the J2EE by providing several incremental improvemen ...

2002

The stable carbon isotope composition of the terrestrial biosphere: Modeling at scales from the leaf to the globe

Jed Oliver Kaplan

Global data sets of the stable carbon isotope composition of plant leaves, of CO2 in canopy air, and of CO2 in the background atmosphere were compiled and compared to results of a global vegetation model (BIOME4) that simulated, at these three scales, the ...

2002

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