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
ritalin the trade name for methylphenidate is a medication prescribed for children with an abnormally high level of activity or with attention deficit hyperactivity disorder adhd and is also occasionally prescribed for treating narcolepsy