Metal hydrides for concentrating solar thermal power energy storage

The development of alternative methods for thermal energy storage is important for improving the efficiency and decreasing the cost for Concentrating Solar-thermal Power (CSP). We focus on the underlying technology that allows metal hydrides to function as Thermal Energy Storage (TES) systems and highlight the current state-of-the-art materials that can operate at temperatures as low as room-temperature and as high as 1100 oC. The potential of metal hydrides for thermal storage is explored while current knowledge gaps about hydride properties, such as hydride thermodynamics, intrinsic kinetics and cyclic stability, are identified. The engineering challenges associated with utilising metal hydrides for high-temperature thermal energy storage are also addressed

A central role for vimentin in regulating repair function during healing of the lens epithelium

Mock cataract surgery provides a unique ex vivo model for studying wound repair in a clinically relevant setting. Here wound healing involves a classical collective migration of the lens epithelium, directed at the leading edge by an innate mesenchymal subpopulation of vimentin-rich repair cells. We report that vimentin is essential to the function of repair cells as the directors of the wound-healing process. Vimentin and not actin filaments are the predominant cytoskeletal elements in the lamellipodial extensions of the repair cells at the wound edge. These vimentin filaments link to paxillin-containing focal adhesions at the lamellipodial tips. Microtubules are involved in the extension of vimentin filaments in repair cells, the elaboration of vimentin-rich protrusions, and wound closure. The requirement for vimentin in repair cell function is revealed by both small interfering RNA vimentin knockdown and exposure to the vimentin-targeted drug withaferin A. Perturbation of vimentin impairs repair cell function and wound closure. Coimmunoprecipitation analysis reveals for the first time that myosin IIB is associated with vimentin, linking vimentin function in cell migration to myosin II motor proteins. These studies reveal a critical role for vimentin in repair cell function in regulating the collective movement of the epithelium in response to wounding

A central role for vimentin in regulating repair function during healing of the lens epithelium

Northwest flank, detail; The Libeskind design, selected from among 50 entrants in an international competition, saw the Terrace Galleries torn down and replaced with a Deconstructivist crystalline-form clad in 25 percent glass and 75 percent aluminium. The building is named after Michael Lee-Chin, who donated $30 million towards its construction. It houses the new main entrance to the museum, a gift shop, a restaurant (C5 Restaurant and Lounge), a cafeteria (Food Studio), seven additional galleries and Canada's largest temporary exhibition hall in the lower level. The Crystal's canted walls do not touch the sides of the existing heritage buildings, save for where pedestrian crossing occurs and to close the envelope between the new form and the existing walls. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 7/18/2010