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 is a brand name of methyphenidate, the most commonly prescribed medication for ADHD. Although technically not an amphetamine, methylphenidate is a stimulant.italin has been approved for use in patients age 6 years and older for the treatment of ADHD. In some cases, it may be prescribed for children younger than age 6 who are diagnosed with attention deficit hyperactivity disorder.