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 drug that is commonly used to treat ADHD. However, it is also a drug that is consistently abused to try to get high or focus on school work. The generic name for Ritalin is methylphenidate, and it is a potent psychostimulant.Ritalin improves the levels and efficacy of neurotransmitters in the brain.italin is a drug that is commonly used to treat ADHD. However, it is also a drug that is consistently abused to try to get high or focus on school work. The generic name for Ritalin is methylphenidate, and it is a potent psychostimulant.