SEARCH Articles Figures Tables Addition reactions, gas-phase radical directive effects Direct Hydrogen Cyanide Synthesis and Water-gas Shift Reaction Direct gas displacement pumps Direct injection, gas chromatography Directive effects in gas-phase radical addition reactions Directive effects, in gas-phase radical Gas Feed Directly into the Water Flow Potential Future Solutions for PO Synthesis Direct Gas-Phase Oxidation of Propene with Oxygen (DOPO) Semiconducting direct thermoelectric gas sensors Synthesis gas formation by direct