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Publication Open Access The potential of copper alloy as alternative material for post and core applications.(2014-09) Somchai Urapepon; สมชาย อุรพีพล; Usanee Peungpaiboon; อุษณีย์ ปึงไพบูลย์; Somchai Urapepon; สมชาย อุรพีพล; Mahidol University. Faculty of Dentistry. Department of ProsthodonticsObjective: The purpose of this study was to investigate the use of copper alloy for dental application. Materials and methods: Three types of copper alloy used in Thailand were selected (Cu-Al, Cu-Al-Ni and Cu-Zn). Ingots of these three alloys...-Zn alloys were not significantly different (48.6, 52.1, and 53.3 percent, respectively). The proof stress of Cu-Al and Cu-Al-Ni alloys (88.5 and 72.1 MPa, respectively) were not significantly different, while that of Cu-Zn alloy (38.9 MPaPublication Metadata only Performance investigation of sodium cobalt oxide/Cu-Zn alloy thermoelectric module(2015-06-26) Chutima Oopathum; Kanchit Kamlangkla; Aphichard Phongphala; Siwaporn Meejoo Smith; Mahidol University; Rajamangala University of Technology system© 2015 AENSI Publisher All rights reserved. This work focuses on performance investigation of a low cost thermoelectric module fabricated from p-type sodium cobalt oxide and n-type Cu-Zn alloy. The waste heat conversion measurements indicatedPublication Metadata only New Initiation System for Resin Polymerization using Metal Particles and 4-META(2000-01-01) Yukio Miyagawa; Somchai Urapepon; Hideo Ogura; Narimichi Honda; Nippon Dental University; Mahidol University; Sun Medical Co., Ltd.and the monomer were analyzed to see if the setting was caused by the polymerization. The effects of 4-META and BPO concentrations on the setting time were also studied using the metal particles that induced the setting very effectively. As-received Cu, Zn, Mo, Sn..., Co, and In particles could initiate the polymerization of the monomer in combination with BPO and 4-META when they were moistened with water. All the three kinds of silver alloy particles examined also could initiate the polymerization, although pure