In a minimally invasive surgical system, an image capture unit includes a prism assembly and sensor assembly. The bracket includes a first side plate and a second side plate and defines a receiving space. The enclosure position may, for instance, comprise an area formed in the side wall of a swimming pool, such that, a lens of the enclosure sure is arranged, in use, to have the device to one side of it, and, sealed from the device on the other side of the lens, there may be water. A translator apparatus 3 performs translation of the language data received from the multilingual translation Web site apparatus 2. The release mechanism has a two-part construction, with the upper part being normally locked to the lower part and released from the lower part when changing of the safety valve is required. A process for making the composition includes mixing the insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical andor thermal treatment to adhere the rare earth compound to the polymer binder.