A hydroponic growing system that comprises a plurality of parallel horizontal pipes, a vertical drain pipe, and a plurality of nutrient-delivering tubes. There is an accommodating space formed on a first side of the first core and there is a recess portion formed on a second side of the first core, wherein the first side is opposite to the second side. The method also includes constructing a complex database query to search the two or more database tables based on the received selection of meta data. In such methods, a suitable agent is A peptide or an antibody thereto. Holding-down clamps for the supply pipes are configured on the high-pressure supply line in such a way that the high-pressure supply line fixes the supply pipes to the engine block. , a hand holding the device, by compensating for the touch event in the detected signal that represents both events.