Abstract: A gate driver on array (GOA) circuit and a liquid crystal display include a plurality of stages of GOA unit circuits which are cascaded. Each stage of the GOA unit circuit includes a stage transmission signal buffering module which includes N inverters sequentially connected in series, where N is odd. At least one inverter comprises a first capacitor and a second capacitor. A first constant voltage is inputted into a terminal of the first capacitor, and a second constant voltage is inputted into a terminal of the second capacitor, and another terminal of the first capacitor and another terminal of the second capacitor are electrically connected with an output terminal of an (N?1)th inverter.

Abstract: An acid resistant composite catalyst comprising dumbbell-shaped composite nanoparticles each comprising a noble metal nanoparticle epitaxially conjugated to a ferrite particle, and/or flower-shaped composite nanoparticles each comprising a noble metal nanoparticle epitaxially conjugated to at least two ferrite particles. The acid resistant composite catalyst is useful to facilitate the reduction of oxygen. The acid resistant composite catalyst can be used in a fuel cell comprising a fuel electrode, an oxygen electrode, and a polymer electrolyte membrane placed between the fuel electrode and the oxygen electrode. The oxygen electrode includes the acid resistant composite catalyst.