This invention relates generally to methods and apparatuses for the treatment of liquids and gases using ultraviolet light. User data is spread using real or complex integer based spreading codes of length SF to SFmax chips. A third free layer, closer to the second free layer than the first free layer, has a magnetic moment oriented parallel to the magnetic moment of the second free layer. Fresh liquid to be concentrated is also introduced into the re-circulating circuit at a rate sufficient to offset the amount of liquid evaporated in the flow corridor. This invention also provides an anti-CCR5 monoclonal antibody selected from the group consisting of PA8, PA9, PA10, PA11, PA12, and PA14.