Atomistic simulations are carried out for zeolite with ABW framework. The structure is modeled and force field simulations are preformed to investigate its elastic properties, bulk, shear modulus and auxeticity. Bulk moduli (Ks), Shear moduli (G), and Poissons ratios (ν) were found to be Ks=79.71725 GPa, G=16.93265 GPa, νxy = -0.2207, νxz= -0.5730, νyx= -0.71717, νyz=0.87013, νzx= -0.33097 and ...

Nouvelles données sur l'écosystème permien du Basin de Rodez: ichnofaune (traces protostomiens, tétrapodes et poissons), méduses plantes Banassac-Canilhac (Lozère, Sud la France). Le site à traces pas Bousquet (Permien, Groupe Grès Rouge, Bassin Rodez, France) a été découvert durant seconde moitié XXème siècle. Sous-estimé, il n'a que très peu prospecté cette période. récemment réinvestigué. De...

In the brain, spike trains are generated in time and presumably also interpreted as they unfold in time. Recent work (Oram et al., 1999; Baker and Lemon, 2000) suggests that in several areas of the monkey brain, individual spike times carry information because they reflect an underlying rate variation. Constructing a model based on this stochastic structure allows us to apply order statistics t...

In this article, a detailed study of the recently synthesized MAX phase borides M2SB (M = Zr, Hf and Nb) has been performed via first principles technique. Investigation mechanical hardness, elastic anisotropy, optical properties, dynamical stability thermal properties are considered for time. The estimated values stiffness constants moduli found in good agreement with available results. micro ...