A new tight-binding total energy method, which has been shown to accurately predict ground state properties of transition and noble metals, is applied to Manganese, the element with the most complex ground state structure among the d metals. We show that the tight-binding method correctly predicts the ground state structure of Mn, and offers some insight into the magnetic properties of this sta...

Precise regulation of N-type (Ca(V)2.2) voltage-gated calcium channels (Ca-channels) controls many cellular functions including neurotransmitter and hormone release. One important mechanism that inhibits Ca2+ entry involves binding of G-protein betagamma subunits (Gbetagamma) to the Ca-channels. This shifts the Ca-channels from "willing" to "reluctant" gating states and slows activation. Voltag...

Palaeomagnetic apparent polar wander (APW) paths from the world’s cratons at 1300–700 Ma can constrain the palaeogeographic possibilities for a long-lived and all-inclusive Rodinia supercontinent. Laurentia’s APW path is the most complete and forms the basis for superposition by other cratons’ APW paths to identify possible durations of those cratons’ inclusion in Rodinia, and also to generate ...

Electronic energy bands of ScH, in the fluorite structure have been calculated by the composite-wave variational version of the APW method. The crystal potential was constructed by superposition of the atomic potential of Herman and Skillman. From the band structure data the density of states (DOS), the joint DOS (JDOS) and the Fermi surface have been worked out. The results of the JDOS calcula...

For any structural sentential calculus (L,C) and sentential language L, similar to L, we put Θo C = {C ′|C ′ is a structural consequence operation on Lo satisfying: A ∈ C(X) only if eA ∈ C ′(eX), all X ∪ {A} ⊆ L and e ∈ Hom(L,Lo)}. Let us recall the following Definition (R. Wójciciki, see III §in [4]). Let (L,C) be structural and Lo be a sentential language similar to L. The projection of (L,C)...

RÉSUMÉ. Ce papier aborde l’évaluation de performances en présence de vérité terrain imprécise. En effet, lors de procédures de benchmarking il est généralement supposé que les données de référence sont parfaites. Nous avons démontré précédemment que cette hypothèse de travail n’est généralement pas satisfaite dans le contexte de problèmes d’interprétation perceptuelle, sauf dans les cas les plu...