Concerta and Adderall are medications used to treat attention deficit hyperactivity disorder (ADHD). These drugs help activate the areas of your brain that are responsible for focusing and paying attention. Concerta and Adderall are the brand names of generic medications. The generic form of Concerta is methylphenidate. Adderall is a combination of two generic drugs: amphetamine and dextroamphetamine. A side-by-side comparison of these two ADHD medications shows that theyâre similar in many ways. However, there are some differences.
NASA engineers have finished testing a new ion-propulsion system for earth-orbiting and interplanetary spacecraft. The system is more powerful and fuel-efficient than its predecessors, enabling it to travel farther than ever before. Ion propulsion works by electrically charging, or ionizing, a gas using power from solar panels and emitting the ionized gas to propel the spacecraft in the opposite direction.
5. Educational Plan in Space Propulsion The educational goals outlined above lead to a Space Propulsion program of study with emphasis in Chemical, Plasma or Micro-Propulsion (see Figure 2). This document outlines a program structure that will accommodate masters and doctoral candidates alike.