On the Origin of Objects is, at heart, an extended search for a non-circular and nonreductive characterization of two key notions: intentionality (the content or "aboutness" distinctive of mental states) and computation (the familiar but elusive tool of much cognitive scientific explanation). Only a non-circular and non-reductive account of these key notions can, Smith believes, provide a secur...

Na+/Ca2+ exchange activities in purely inside-out and mixed inside-out and right-side-out fish enterocyte basolateral plasma membrane vesicle preparations display equal affinities for Ca2+, showing that only the intracellular Ca2+ transport site of the Na+/Ca2+ exchanger is detected in experiments on vesicle preparations with mixed orientation. Therefore, Ca2+ pump and Na+/Ca2+ exchange activit...

This paper presents the design and development of plastic waste extruding machine to provide 3D printing filaments. The motivation this research is create a printer filament from using simple components. In addition, another goal redesign an autonomous-extruding manufacture filament. process begins with design, needs analysis, rebuilding electrical assembly, function testing, analysis filament,...

Plasma membranes of a cell contain 2 kinds of Ca2÷-extruding mechanisms to maintain [Ca 2÷] of cytoplasm at submicromolar levels, ATP-dependent and extracellular NaLdependent mechanisms. In plasma membranes of several tissues, the ATP-dependent Ca2+-pumps associate with (Ca 2+ + Mg2÷)-ATPase activity [ 1-3 ]. In the case of erythrocyte plasma membrane, a reconstitution study has clearly demonst...