A method of manufacturing laser-welded article having an integral construction of piled workpieces, that are welded by heat generated from irradiation with laser and include thermoplastic resin, a laser-transmissible-absorptive molded workpiece including a thermoplastic resin and 0. There is a method comprising capturing an image of at least one player, and determining the gender and age of the player based on the image. The radio transceiver is configured for generating the first and second wireless telecommunications signals on substantially the same wireless band in such a way as to produce phase cancellation along a predetermined boundary. A quartz inner tube and quartz inlet pipe both include holes therethrough, but in orthogonal directions to one another, to flow a reaction gas onto the wafers loaded within the sealed processing room. The invention further relates to a polymerization reactor having a lumen defined by a reaction wall for performing said process.