Different Forms of Theophylline. There are many different theophylline products available, and most are not equivalent to each other. There are short-acting and long-acting tablets and capsules, as well as a theophylline elixir. An injectable form of the medication is also available.Along with many different generic theophylline products, the following brand-name theophylline medications are also available:ifferent Forms of Theophylline. There are many different theophylline products available, and most are not equivalent to each other. There are short-acting and long-acting tablets and capsules, as well as a theophylline elixir. An injectable form of the medication is also available.
Unlike other ring systems that were given proper names, Greek letters were primarily used to name the rings of Uranus, particularly the main rings. 1  Îµ ring (epsilon) â Is the brightest and the densest of the 13 rings of Uranus.
Uranusâ rings werenât discovered until 1977, because they are made out of material that is extremely dark. Half way through Uranusâ orbit (every 42 years), the angle between Uranus and Earth lines up in such a way so as to allow us to see Uranusâ rings edge-on from Earth. Figure 1: This infrared image of the dark side of the rings was taken by the Keck Observatory in 2007.