A conjugated diene rubber gel comprising 80-99 weight % of conjugated diene monomer units and 20-1 weight % of aromatic vinyl monomer units and having a swelling index of 16 to 70 as measured in toluene. The light fixture mounting bracket includes at least one mounting surface configured for connection to the housing, and an enclosure connected to the at least one mounting surface. As a result, inhomogeneities in reflectivity caused by the mask itself are at least partly counteracted. Polygonal basis objects are only used to define structures in the model that experience torsion, such as certain structures in the heart that experience torsion during the cardiac cycle. The selection unit selectively transmits a first voltage or a second voltage to the driving transistor. Notably, in preferred embodiments, the method includes the magnetization of the tubular in a substantially radial direction and the stresses are applied in vectors perpendicular to the radial magnetization of the tubular.