Viscoelastic Effects in Multilayer Polymer Extrusion

The effect of viscoelasticity on multilayer polymer extrusion is discussed.In these coextrusion processes predetermined patterns are created with a remarkable breadth of complexity even in geometrically simple dies via elastic rearrangements caused by the second-normal stress differences.A computational method is offered, here based on the mapping

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Harmonic scalpel versus flexible CO2 laser for tongue resection: A histopathological analysis of thermal damage in human cadavers

Abstract Background Monopolar cautery is the most commonly used surgical cutting and hemostatic tool for head and neck surgery.There are newer technologies that are being utilized with the goal of precise cutting, decreasing blood loss, reducing thermal damage, and allowing faster wound healing.Our study compares thermal damage caused by Harmonic s

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