A public advertisement display is dynamically adjusted for advertising content in response to characterizing a viewing population. In addition, the invention relates to a hyperforin-containing ointment or cream and to its production and use. The method can further include simultaneously measuring a plurality of voltage signals from a plurality of measuring positions of the body during a predetermined period, and processing at least two of the plurality of voltage signals to determine a composition parameter of a body segment so as to assess or analyze composition of the body. A ring nut secures the air seal to the inner platform. The present invention further relates to a diagnostic method applied to HIV-positive individuals undergoing HAART to monitor the suppression of CCR5- or CXCR4-specific strains. The output of the high-pass filter is connected to the inputs of the two bridge output stages.