Notre travail s’intègre dans la problématique générale de la stabilité du réseau ad hoc. Plusieurs, travaux ont attaqué ce problème. Parmi ces travaux, on trouve la modélisation du réseau ad hoc sous forme d’un graphe (les machines correspondent aux nœuds, les arrêtes correspondent aux liens entre les machines). Donc le problème de stabilité du réseau ad hoc qui correspond à un problème d’alloc...

We present a case of a 14-year-old previously healthy boy with acute hepatotoxicity after noni berry juice consumption. As the popularity of noni berry consumption continues to increase, heightened awareness of the relation between noni berry consumption and acute hepatotoxicity is important.

The relation between level crossings, entanglement, and Berry phases is investigated for the Breit-Rabi Hamiltonian of hydrogen and sodium atoms, describing a hyperfine interaction of electron and nuclear spins in a magnetic field. It is shown that the entanglement between nuclear and electron spins is maximum at avoided crossings. An entangled state encircling avoided crossings acquires a marg...

Melanin is the main pigment in animal coloration and considerable variation in the concentrations of the two melanin forms (pheo- and eumlanin) in pigmented tissues exists among populations and individuals. Melanin-based coloration is receiving increasing attention particularly in socio-sexual communication contexts because the melanocortin system has been hypothesized to provide a mechanistic ...

Warning (aposematic) and cryptic colorations appear to be mutually incompatible because the primary function of the former is to increase detectability, whereas the function of the latter is to decrease it. Disruptive coloration is a type of crypsis in which the color pattern breaks up the outline of the prey, thus hindering its detection. This delusion can work even when the prey's pattern ele...

BACKGROUND This work describes a proteomics profiling method, optimized and applied to berry cell suspensions to evaluate organ-specific cultures as a platform to study grape berry ripening. Variations in berry ripening within a cluster(s) on a vine and in a vineyard are a major impediment towards complete understanding of the functional processes that control ripening, specifically when a char...

We introduce the convex circuit-free coloration and convex circuit-free chromatic number −→ χa( −→ G) of an oriented graph −→ G and establish various basic results. We show that the problem of deciding if an oriented graph verifies χa( −→ G ) ≤ k is NP-complete if k ≥ 3 and polynomial if k ≤ 2. We exhibit an algorithm which finds the optimal convex circuit-free coloration for tournaments, and c...

Quantized Berry phases as local order parameters in t-J models are studied. A texture pattern of the local order parameters is topologically stable due to the quantization of nonAbelian Berry phases defined by low-energy states below a spin gap, which exists in the large J/t case with a few electrons. We have confirmed that itinerant singlets in the wide class of t-J models carry the nontrivial...

In this work, four vacuolar H+-PPase (VHP) genes were identified in the grape genome. Among them, VvVHP1; 2 was strongly expressed in berry skin and its expression exhibited high correlations to anthocyanin content of berry skin during berry ripening and under ABA and UVB treatments. VvVHP1; 2 was transcriptionally activated directly by VvMYBA1, and VvVHP1; 2 overexpression promoted anthocyanin...