Two model nickel catalysts for CO2 methanation reaction were prepared by the impregnation method using unmodified and dealuminated BEA-type zeolite supports, denoted NiHAlBEA NiSiBEA. Transmission electron microscopy (TEM) X-ray diffraction studies evidenced formation of metallic crystallites different size, partially located on external surface grains in catalyst small nanoparticles uniformly ...

OBJECTIVES This study evaluated by three-dimensional finite element analysis the tensions generated by different disocclusion patterns (canine guide and bilateral balanced occlusion) in an implant-supported mandibular complete denture. MATERIAL AND METHODS A three-dimensional model of implant-supported mandibular complete denture was fabricated according to the Brånemark protocol. A 5-element...