Rhomboid Related Proteins, involved in the EGFR signaling pathway, are provided. In one embodiment, a method of introducing a gas into a semiconductor processing chamber comprises providing a nozzle having a proximal portion connected to a chamber wall or a gas distribution ring of the semiconductor processing chamber and a distal portion oriented inwardly away from the chamber wall into an interior of the semiconductor processing chamber. In another aspect, an apparatus of a RFID wristband comprises three layers: the top layer is a wristband, the middle layer has two RFID tags, each of which comprises one RFID chip and one tag antenna; the bottom layer is made by anti-irritation materials. Activities associated with different modes may be handled differently utilizing AETs.