BACKGROUND The exact anatomical cause of the tear trough remains undefined. This study was performed to identify the anatomical basis for the tear trough deformity. METHODS Forty-eight cadaveric hemifaces were dissected. With the skin over the midcheek intact, the tear trough area was approached through the preseptal space above and prezygomatic space below. The origins of the palpebral and o...

In the present work the efficiency of a solar parabolic trough has been investigated experimentality. parabolic trough solar collector constitute a proven source of thermal energy for industrial process heat and power genaration. The impact of  using the partially porous media in the absorber on the efficiency of PTC (parabolic trough collector) has been investigated. The porosity of copper foa...

Abstract Biomolecular systems show how host–guest binding can induce changes in molecular behavior, which turn impact the functions of system. Here we report an artificial system where dynamic adaptation during guest alters both host conformation and dynamics. The self-assembled cage employed here possesses concave walls a chirotopic cavity. Complementarity between curved surfaces fullerenes in...