The present invention relates to a process for the selective decomposition of hydrazine in a hydrazinesubstituted hydrazinewater mixture. For each voice speaker, voice data include a speaker identifier that is associated with a visual indicator displayed to indicate the voice speaker who is currently speaking. A radio-frequency current is modulated by the frequency mixing stage to generate an output mid-frequency current signal. A first monitor harness connects a lower end of the cable bundle for connection to a first associated monitor device. A suffix checker carries out a check on the suffix of the registration pattern retrieved by the prefix retriever, among the suffixes on the second list, as to whether the suffix of the registration pattern matches the suffix of the retrieval key. Also provided is a particulate comprising a matrix of polymer material and containing one or more image-forming agents and a photo-oxidizing agent useful in making dual energy imaging compositions.