A method of separating oxygen from nitrogen involves delivering air to a first side of a membrane comprising a polymer support and a layer of zeolite nanosheet particles with thickness of 2 nm to 10 nm and mean diameter of 5 nm to 5000 nm. A display region formed on an array panel has a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively. Each of collecting electrodes excluding the collecting electrodes positioned at opposite end sides of the arrangement of the collecting electrodes further has a second joining portion having a second paste with a smaller resistivity than that of the first paste. The command conversion function means makes the cluster manager convert the command G into the commands. The cooling system has a heat exchanging interface for providing thermal contact between the processing unit and the cooling liquid for dissipating heat from the processing unit to the cooling liquid, Different embodiments of the heat exchanging system as well as means for establishing and controlling a flow of cooling liquid and a cooling strategy constitutes the invention of the cooling system. The first end of the engaging piece is received into or separated from the recess when the engaging piece slides.