1 0 0 0 大阪春秋

出版者
大阪春秋社
巻号頁・発行日
1973
著者
冨江 瑛彦 久慈 千栄子 赤塚 亮 佐々木 啓一 嶋田 慶太 水谷 正義 厨川 常元
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集 (ISSN:21879761)
巻号頁・発行日
vol.83, no.856, pp.17-00169-17-00169, 2017 (Released:2017-12-25)
参考文献数
3
被引用文献数
1

Powder jet machining is one of blasting processes conducted under room temperature and atmospheric pressure. This process brings both deposition and removal process, and in this study, it refers to powder jet deposition (PJD) and abrasive jet machining (AJM). As an application of PJD, the authors have proposed an innovative dental treatment method with the hydroxyapatite (HA) fine particle. By this method, thick HA coating can be fabricated directly in the human oral cavity. In this study, the effect of the particle impact angle was investigated as a parameter that affects the machining phenomenon. The experiments showed that the machining phenomenon transited depending on the blasting angle. In the vertical blasting condition, PJD process was just observed. On the other hand, in the more acute blasting angle such as 45 deg. or 60 deg. both coating and removal process appeared at the same time and in the most acute angle of 30 deg. only removal process was detected. The TEM observations showed that the impact surface of the HA substrate deformed and the deformation depth increased as the blasting angle get more acute. The smoothed particle hydrodynamics (SPH) method was utilized for the analysis for the fracture behavior of the HA substrate. The result indicated that the decrease of the impact angle induced the increase of the strain and the temperature of the interface between the particle and the substrate. Thus it is concluded that the shear stress, which refers to the impact angle, induces the destruction of the substrate by the deformation and the brittle fracture due to the thermal stress.
著者
山口 拓夢
雑誌
学習院大学人文科学論集 (ISSN:09190791)
巻号頁・発行日
no.3, pp.1-15, 1994-09-30

In this treatise, I have made clear these two points:first, the struture of the text;second, the cultural background of the structure. I have investigated the transition of the type of the intelligence. In the Homeric age, the intelligence ca11ed METIS was highly estimated. This is the eminent character of the shamanistic culture. The word‘‘METIS”connotes the ability to cope with the flUCtUant reality. 111the age of Plato, the sophists, the rhetoricians, the doctors and the politicians had this ability. They were, however, little concerned with the ethical aspect. Plato stood against this type of i11telligence by thinking articulately through words. But the third type of the intelligence, which Plato suggested, is still insu伍cient to reach the real recognition of the world. We must once get out of the linguistic dimension.
著者
一圓 光彌
出版者
大阪府国民健康保険団体連合会
雑誌
こくほ大阪
巻号頁・発行日
vol.281, pp.2-7, 1999-03
出版者
巻号頁・発行日
vol.51 遠州金谷諏訪原城図,
著者
小河内五橋 著
出版者
有朋館
巻号頁・発行日
1907

1 0 0 0 OA [えびす之絵]

巻号頁・発行日
1800
著者
鈴木 克幸 原 康之 本間 理 髙屋 快 白幡 康弘
出版者
日本腹部救急医学会
雑誌
日本腹部救急医学会雑誌 (ISSN:13402242)
巻号頁・発行日
vol.35, no.3, pp.307-310, 2015-03-31 (Released:2015-06-11)
参考文献数
16

症例は56歳,男性。心窩部痛・嘔吐を主訴に前医を受診し,胸腹部造影CT検査所見で最大径50mmの巨大脾動脈瘤と完全内臓逆位を指摘され,手術目的に当科紹介となった。完全内臓逆位という破格があり,動脈瘤が直径50mmと大きいため開腹手術を選択した。脾動脈瘤と膵臓との癒着が高度であり,脾動脈瘤の切除は膵損傷および術後膵液漏の危険性が極めて高いと判断し,脾動脈結紮+脾臓摘出術を施行し,術後合併症なく経過した。脾動脈瘤は比較的まれな疾患であり,最大径50mm以上の報告例は極めて少ない。また,完全内臓逆位を伴う脾動脈瘤の手術例の報告はない。今回われわれは完全内臓逆位を伴う最大径50mmの脾動脈瘤に対して手術を施行したので,文献的考察を加え報告する。
著者
藤田 翔
出版者
科学基礎論学会
雑誌
科学基礎論研究 (ISSN:00227668)
巻号頁・発行日
vol.44, no.1, pp.1-14, 2017
被引用文献数
1

<p> This paper discusses a philosophical answer about the question "in relativistic cosmology, is space really expanding?" In general cosmology which is called a big-bang theory, cosmological space is said to have been expanding like a balloon gradually pumped up since a big-bang, which is shown by a co-moving coordinate of which the scale gets bigger as a proper time of observers in the earth passes. In this paper, I would like to interpret this phenomenon from a structural spacetime realism's viewpoint in which spacetime is real as different whole structures for different coordinates you arbitrarily choose depending only on a metric/gravitational field. Through my remark, I get a new conclusion of what spacetime really means,thus the role of specetime in contemporary physics. </p>