文献一覧: 西直美 (著者)

2 0 0 0 IR 国家統合におけるイスラーム教育の役割 : タイ深南部を事例として

著者: 西直美ニシナオミ Nishi Naomi
出版者: 同志社大学
巻号頁・発行日: 2017

Thailand, as a Buddhist majority country, has been trying to accommodate its Muslim population in the southernmost provinces in the course of the history over 100 years. Along with the surge in nationalist-separatist discourse, there has been a lack of attention given to the study of Islamic reform and revival in Thailand. This paper shows more diverse and complicated situation based on the existing research through a historical analysis of Thailand's national policies and in-depth interviews conducted in one of the most conservative areas in the southernmost provinces.

2 0 0 0 OA Al-Si-Cu系合金ダイカストのさi張特性に及ぼすけい素含有量の影響

著者: 岡安光博西直美金沢憲一
出版者: 公益社団法人日本鋳造工学会
雑誌: 鋳造工学 (ISSN:13420429)
巻号頁・発行日: vol.70, no.4, pp.266-272, 1998-04-25 (Released:2011-02-01)
参考文献数: 8
被引用文献数: 4

Effects of silicon content are investigated on tensile properties and crack propagation behavior of Al-Si-Cu alloy die castings. The specimens are made by the low velocity shot die casting method. Silicon content of alloy is varied from 8.6 mass % to 15.4 mass %. The tensile strength and the elongation of hypo-eutectic Al-Si alloys are higher than those of hyper-eutectic Al-Si alloys. In the case of hypo-eutectic Al-Si-Cu alloys, a crack propagates through the eutectic phase in inter-dendrite region or α-Al dendrite. In the case of hyper-eutectic silicon alloy, the primary silicon acts as the origin of fracture because primary silicon crystallizes with facet planes. The crack mainly propagates through primary silicon grains or along eutectic silicon. Primary silicon particles tend to segregate in case of low velocity injection casting. This macro-segregation of primary silicon particles deteriorates the mechanical properties. Especially tensile strength decreases with increase of segregation.