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ab initio calculations were employed to investigate nitrogen inversion as a configuration change that can supply an infinitely useful switchable control mechanism for some complex systems. in this paper, design of a new artificial molecular nanohinge is discussed based on nitrogen inversion in which reciprocating motion of substituent in effect of inversion phenomenon, led to an open–close moti...

We have developed a new method for transforming images with per-pixel displacements into textures that have correct parallax when texture-mapped, in the usual way, onto polygons. Our new method results from factoring the 3-D image-warping equations of McMillan and Bishop into a prewarp followed by standard texture mapping. The pre-warp handles only the parallax effects resulting from the direct...

The Campos and Santos Basins have been a focus of subsurface studies since the discovery in 2006 large accumulations hydrocarbons Early Cretaceous rift post-rift strata below Aptian evaporites. In this study, regional 2D seismic lines, 3D survey well data were interpreted to reconstruct tectono-stratigraphic evolution stages northern sector Basin. Detailed interpretation geological modelling us...

Relief wells are used extensively to relieve excess hydrostatic pressure in pervious foundation strata overlain by impervious top strata, conditions which often exist landward of levees and downstream of dams and hydraulic structures. Placing well outlets in below-surface trenches or collector pipes helps dry up seepage areas downstream of levees and dams. Relief wells are often used in combina...

a microporous bisphenol a diglycidyl ether (dgeba) epoxified-polyethersulfone (pes) blend membrane (epes membrane) was prepared through dry-wet phase inversion. this study attempts to correlate the changes in membrane physical and chemical properties when the epes membranes were exposed to different durations of dry-phase inversion, towards the separation efficiency of carcinogen chromium (vi)....

Abstract The polyphasic evolution of the testimonial buttes in central area Ebro basin (Los Monegros) is analysed. This a semiarid that favours high erosion rates. An evolutionary model Jubierre hills presented shows environmental cycles represented by aggradational and degradative processes on slopes resulted present arrangement talus flatiron rings. In four studied cases, relicts are composed...