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Journals and Conferences
Chaotic Hamiltonian systems with time scale separation display features known from nonequilibrium statistical physics even when no thermodynamic limit is involved. In particular, fast chaotic degrees… (More)
The study of the long time behavior of systems with time-scale separation is considerably facilitated if the fast degrees of freedom can be eliminated without affecting the slow dynamics. We… (More)
The Hamiltonian dynamics of slow variables coupled to fast degrees of freedom is modeled by an effective stochastic differential equation. Formal perturbation expansions, involving a Markov… (More)
Les tumeurs «génétiques» des hybrides de Nicotiana sont dues à une perturbation de l'équilibre hormonal, susceptible de restitution. L'origine génétique de ces tumeurs paraít improbable.
The composition of a solid culture medium specially adapted for the culture ofAgrobacterium tumefaciens is given. The bacterium grows better on this medium than on those previously described.