The various methods and devices described herein relate to devices which, in at least certain embodiments, may include at least one mechanical switch for user to select a user profile interface setting and at least one processor for causing the device to respond to the mechanical switch. The body further includes at least one multi-strand of radiopaque material incorporated among the single strands, the multi-strand having at least two side-by-side filaments of radiopaque material that lie substantially contiguous to each other over substantially the entire length of the multi-strand. The invented facile method can be utilized in a batch process or a continuous process for effective production of 1,4-bisbenzene.