A method and apparatus for providing to a user personalized information from an database comprising contributor content records and contributor profile records, based upon a comparison of the user’s search query and user profile record with the contributor content records and contributor profile records. Several layers of heat exchanger tubes are provided, with radial arms mounted in between to mix and loosen the product. The detachable filling element and the radioactive source are adapted to be inserted into a vessel at least in close proximity of a neck of an aneurysm.