A process for the preparation of functional molecules using the thiol-ene coupling reaction and a process for the preparation of protected functional thiols, specifically thioesters is provided. The first baseband waveform is multiplied by the carrier and a first transmission data sequence to acquire a first transmission waveform. These systems take advantage of the need for higher pulse energies at lower repetition rates so that such sources can be cost effective. Embodiments can be utilized as a security barrier, preventing intrusion by trespassers, divers or various sized boats. The A-V-V timing scheme corresponding to the highest magnitude stroke volume, as indicated by the stroke volume surrogate, is identified and automatically programmed to maintain optimal A-V-V settings acutely and chronically. The conduit is installed in the groove.