Concept

Multiplication végétative

Publications associées (49)

U(VI) reduction by spores of Clostridium acetobutylicum

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Harish Veeramani, Elena Cristina Dalla Vecchia, Nicholas Wigginton

Vegetative cells of Clostridium acetobutylicum are known to reduce hexavalent uranium (U(VI)). We investigated the ability of spores of this organism to drive the same reaction. We found that spores were able to remove U(VI) from solution when H, was provi ...

Elsevier2010

On the evolution of sexual reproduction in hosts coevolving with multiple parasites

Marcel Salathé

Host-parasite coevolution has been studied extensively in the context of the evolution of sex. Although hosts typically coevolve with several parasites, most studies considered one-host/one-parasite interactions. Here, we study population-genetic models in ...

2010

Leaky Waveguide for Train-to-Wayside Communication-Based Train Control

In guided urban automated transportation systems, the maintenance of a high-quality broadband train-to-wayside communication at all locations along the track poses a major problem. Several techniques are currently used. However, to achieve sufficient rates ...

Institute of Electrical and Electronics Engineers2009

Mechanical and electronic properties of vanadium oxide nanotubes

László Forró, Arnaud Magrez, Andras Kis, Balazs Sipos, Jin Won Seo, Martial Duchamp, Neven Barisic

Vanadium oxide nanotubes with a diameter of 20-100 nm and an aspect ratio of 50-100 were synthesized by hydrothermal method. Young's modulus of 20-80 GPa was obtained by bending measurements of individual nanotubes using an atomic force microscope. Electri ...

American Institute of Physics2009

The role of epistasis on the evolution of recombination in host-parasite coevolution

Marcel Salathé

Antagonistic coevolution between hosts and parasites is known to affect selection on recombination in hosts. The Red Queen Hypothesis (RQH) posits that genetic shuffling is beneficial for hosts because it quickly creates resistant genotypes. Indeed, a larg ...

Elsevier2009

Channel and wedge plasmon modes of metallic V-grooves with finite metal thickness

Olivier Martin

We investigate numerically the effect of a finite metal film thickness on the propagation characteristics of the channel plasmon polariton (CPP) and wedge plasmon polariton (WPP) modes, both in a symmetric and asymmetric environment. We observe that decrea ...

Optical Society of America2009

Disruption of the PfPK7 gene impairs schizogony and sporogony in the human malaria parasite Plasmodium falciparum

PfPK7 is an orphan protein kinase of Plasmodium falciparum with maximal homology to MEK3/6 and to fungal protein kinase A proteins in its C-terminal and N-terminal regions, respectively. We showed previously that recombinant PfPK7 is active on various subs ...

American Society for Microbiology2008

Cold storage with ice slurries

Didier Albert Simon Vuarnoz

The storage of 'cold' with ice slurries-a special type of thermally multi-functional fluids or phase change slurries (PCS)-is discussed. At first an example of a calculation of a thermal energy storage tank in an ice slurry system with a peak load demand i ...

2008

Functional characterization of both MAP kinases of the human malaria parasite Plasmodium falciparum by reverse genetics

The kinome of the human malaria parasite Plasmodium falciparum includes two genes encoding mitogen-activated protein kinase (MAPK) homologues, pfmap-1 and pfmap-2, but no clear orthologue of the MAPK kinase (MAPKK) family, raising the question of the mode ...

Wiley-Blackwell2007

Mutation accumulation in space and the maintenance of sexual reproduction

Marcel Salathé

The maintenance of sexual reproduction remains one of the major puzzles of evolutionary biology, since, all else being equal, an asexual mutant should have a twofold fitness advantage over the sexual wildtype. Most theories suggest that sex helps either to ...

Wiley-Blackwell2006

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