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Discrete and continuum analysis of localised deformation in sand using X-ray mu CT and volumetric digital image correlation

The objective of this work was to observe and quantify the onset and evolution of localised deformation processes in sand with grain-scale resolution. The key element of the proposed approach is combining state-of-the-art X-ray micro tomography imaging with three-dimensional volumetric digital image correlation techniques. This allows not only the grain-scale details of a deforming sand specimen t

Estimates of scattered electromagnetic fields

We present some general estimates of the scattered electromagnetic fields for a general bounded scattering domain in the anisotropic materials setting. In particular, it is shown that the L2-norm and sup-norm of the scattered field in an arbitrary finite exterior domain are bounded by the Hcurl norm of the incident field. Moreover, several estimates of the traces of the scattered field on the boun

Comparisons of Oil Shale Retort Water Treatment Methods

In this work, physical and chemical characterization of El- Lajjoun retort water from oil shale pyrolysis process has been carried out. Comparison of different treatment methods for the major components which could affect the design and operation of any set of wastewater treatment process were conducted. The removal of phenol and ammonia using activated carbon after 12 hour resident time were 93 a

Remote sensing of photosynthetic light-use-efficiency of Siberian boreal forest

The relationship between a physiological index called the photochemical reflectance index (PRI) and photosynthetic light-use-efficiency (LUE) of a Siberian boreal forest during the winter–spring transition, or green-up period, was investigated in 2000. During this time the photosynthetic apparatus was considered under stress as a result of extremes of temperature (from −20 to 35 °C) coupled with a