Abstract: Disclosed are processes for converting an alkyne to an olefin comprising feeding a molecular-oxygen-containing gas stream into a converting zone of an alkyne converter along with an alkyn-containing feed mixture comprising hydrocarbons and molecular hydrogen to contact the converting catalyst. The converting catalyst can be regenerated online as a result.

Abstract: A cable television system (100) includes ahead end section (105) for processing information provided from subscriber equipment via a reverse path within the system (100). The reverse signal is provided from subscriber equipment in the form of a broadband RF signal, which can include voice, data, and/or video information. The broadband RF signal is provided from a plurality of subscribers to a node (200) that pulse width modulates the RF signal to generate a reverse optical signal. The pulse width modulated optical signal is then provided to the head end section (105) for processing to recover the information contained therein.

Abstract: A television interval timer generates a plurality of gating waveforms which when applied to digital circuitry, serve to gate out various portions of a television waveform determinative of a parameter to be measured. The parameter to be measured is selected by means of a selector panel which assigns a predetermined address to that parameter. The address is employed to select the proper gating waveform, the reference level at which the measurement is to be made, and the transition at the start and finish of the measurement. A counter is controlled to count a number of transitions which occur during the selected interval and which is a direct indication of the duration or timing interval associated with the parameter selected. The contents of the counter are directly displayed on a digital display to enable the user to directly view the parameter measured.