An apparatus including a switch and a push-button coupled to the switch. Crystals of any compound among 3-3-amino-4–5-phenylpropionic acid, methyl 3-4–3–5-nitrophenylpropionate, and methyl 3-3-amino-4–5-phenylpropionate, and methods of producing the same are provided. When a lubricant is supplied to the sliding surface 3, a foreign substance 6 mixed in the lubricant is trapped by foreign substance discharging grooves 5 and 5\u2032 and then discharged out of the sliding bearing 1 from ends 5A and 5B open to end faces 7 and 8. The temperature control system further comprises a heat transfer unit having an inlet that is configured to receive heat transfer fluid from the heat exchanger at a bulk fluid temperature.