Based on the mechanism of heat generation at the welding interface, welding methods for thermoplastics can be classified as external and internal heating methods, as shown in Fig 1. Fig. 1. Classification of welding methods for semi-finished polymeric materials.
ritalin is the brand name of the drug methylphenidate hydrochloride doctors prescribe ritalin to treat attention deficit hyperactivity disorder adhd and a sleep disorder known as narcolepsy
What Is the Difference Between Focalin & Ritalin? Ritalin and Focalin are two of the commonly prescribed drugs used for treating attention deficit hyperactivity disorder (ADHD). Knowing the differences between these medications may be helpful when developing a plan of action for ADHD treatment. Focalin, or dexmethylphenidate, is a mild stimulant that is most commonly used to treat ADHD.