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 Narcotic Adjuvant Drugs Ukraine. Ritalin is one of the trade names for the stimulant methylphenidate. It is commonly used for the treatment of attention deficit hyperactivity disorder and the sleep disorder narcolepsy. Ritalin is available in tablet, capsule, and liquid form.