1.

論文(リポジトリ)

論文(リポジトリ)
里井, 洋一 ; Satoi, Yoichi
出版情報: 歴史と実践.  pp.1-19,  1980-11-17.  沖縄県歴史教育者協議会
URL: http://hdl.handle.net/20.500.12000/32554
2.

論文(リポジトリ)

論文(リポジトリ)
林, 大五郎 ; Hayashi, Daigoro
出版情報: 南極資料.  70  pp.15-24,  1980-09-30.  国立極地研究所 — National Institute of Polar Research
URL: http://hdl.handle.net/20.500.12000/2907
概要: Two mechanisms for the rising of plutonic rocks in terms of their origins are plausible. One is the rising resulted from the buoyancy of acid plutons, e.g. granite and migmatite which are lighter in density, being 2.67 and 2.76 respectively. The other is the rising due to the squeezing of mafic and ultramafic plutons, e.g. peridotite and gabbro which have heavier densities of 3.23 and 2.98 respectively. There has been no verification for the mechanism of squeezing so far, though the mechanism by buoyancy has already been proposed by such authors as RAMBERG (Gravity, Deformation and the Earth's Crust, Academic Press, 214p, 1967) and KIZAKI (J. Fac. Sci. Hokkaido Univ., Ser. 4, 15, 157, 1972) and others. The term squeezing signifies that when a pluton is heavier than its surrounding rocks (crust), the pluton is squeezed out by the pressure of the surrounding rocks. The rising of pluton by squeezing is demonstrated numerically by a computer simulation in the present paper.<br />深成岩の上昇に関して,それらの成因上2つの機構が考えられる.1つは酸性岩,すなわち密度2.67g/cm^3の花崗岩や2.76g/cm^3のミグマタイトなどの,浮力による上昇であり,他は,超塩基性ないし塩基性岩,すなわち密度3.23g/cm^3のカンラン岩や2.98g/cm^3のハンレイ岩などの,しぼり出しによる上昇である.浮力による上昇機構はRAMBERG(Gravity,Deformation and the Earth's Crust, Academic Press, 214p, 1967)やKIZAKI(J. Fac. Sci. Hokkaido Univ., Ser. 4, 15, 157, 1972)らによってすでに提案されているが,しぼり出し上昇の機構に関する検証はまだない.しぼり出しとは,深成岩―周囲岩体より重い―があるとき,その深成岩が周囲岩体の圧力によってしぼり出されることを意味する.本論文では,この深成岩のしぼり出しによる上昇を,数値的にシミュレートした. 続きを見る
3.

論文(リポジトリ)

論文(リポジトリ)
永井, 實 ; Nagai, Minoru
出版情報: 日本機械学会論文集. B編 = Transactions of the Japan Society of Mechanical Engineers. B.  46  pp.394-399,  1980-03-25.  日本機械学会
URL: http://hdl.handle.net/20.500.12000/362
概要: 擬似衝撃波の前後に存在する流れの非一様性を評価するために,質量流量,運動量流量およびエネルギの修正係数を導入すると,これらの係数をパラメータとして擬似衝撃波前後の圧力比,密度比などの関数が疑似衝撃波直前の主流のマッハ数の関数としてexpli citに求められることを示した.具体例として疑似襲撃波に前後の相似の速度分布が存在する場合について計算を行い,本理論が従来の実験値をかなりよく説明することを示した. 続きを見る
4.

論文(リポジトリ)

論文(リポジトリ)
永井, 實 ; 佐久川, 恵博 ; Nagai, Minoru ; Sakugawa, Keihaku
出版情報: 琉球大学工学部紀要.  pp.1-11,  1980-03.  琉球大学工学部
URL: http://hdl.handle.net/20.500.12000/12127
概要: Flat plate standing perpendicularly in the wind receives large drag because of the flow separation from the plate edge and the following large eddy region. This eddy region, called wake, is affected by the boundary condition around the plate, and then affects the drag force. In this study, the aerodynamic characteristics of the rectangular flat plate with a special opening were experimentally investigated at the various boundary conditions. The model plate was manufactured as a sliding shutter by the company O and the company K. The opening ratio of the plate is about 18 percent. According to the experiment, the drag coefficient of the specimen did not vary from the same plate but without the opening. Drag coefficient in the case of no boundary, specimen in the uniform flow, is 1.19, which is somewhat higher than the value 1.12 of the thin rectangular flat plate. The difference is seemed to be caused by the thickness and the edge shape of the plate. In the worst boundary condition, the flat plate placed on the center of the large wall, the drag coefficient reachs to 1.59, which is 34 percent larger than the value in the case of no boundary. However, if a kind of wind shutter is placed behind the model, the drag force acting to the model becomes almost negligible. Pressure oscillating phenomena are also researched, and it is tried to explain the frequency by the Kármán vortices and Helmholts resonance. 続きを見る
5.

論文(リポジトリ)

論文(リポジトリ)
金城, 松栄 ; 小田切, 忠人 ; Kinjo, Matsuei ; Kotagiri, Tadato
出版情報: 琉球大学教育学部紀要 第二部.  pp.1-9,  1980-12.  琉球大学教育学部
URL: http://hdl.handle.net/20.500.12000/12370
6.

論文(リポジトリ)

論文(リポジトリ)
崎浜, 秀栄 ; 吉田, 一晴 ; 浅野, 誠 ; 小田切, 忠人 ; 比嘉, 善一 ; Sakihama, Syuei ; Yoshida, Kazuharu ; Asano, Makoto ; Kotagiri, Tadato ; Higa, Zenichi
出版情報: 琉球大学教育学部紀要 第一部.  pp.367-386,  1980-12.  琉球大学教育学部
URL: http://hdl.handle.net/20.500.12000/12371
7.

論文(リポジトリ)

論文(リポジトリ)
田港, 朝昭 ; 小田切, 忠人 ; Taminato, Tomoaki ; Kotagiri, Tadato
出版情報: 琉球大学教育学部紀要 第一部.  pp.335-339,  1980-12.  琉球大学教育学部
URL: http://hdl.handle.net/20.500.12000/12387
8.

論文(リポジトリ)

論文(リポジトリ)
藤原, 綾子 ; Fujiwara, Ayako
出版情報: 琉球大学教育学部紀要 第二部.  pp.203-207,  1980-12.  琉球大学教育学部
URL: http://hdl.handle.net/20.500.12000/13712
概要: The author observed configuration of the surface of Ryukyu Basho (Musa liukiuensis Makino) using scanning electron micro scope (SEM). Many stripes were observed on integument of the fiber. Shape of the cross section of the fiber showed uneven and lots of small holes were observed all over the cross section. The fiber of Ryukyu Basho colored by picric acid, fuchsine and by Bokenstain respectively showed similar shade to those of silk fiber. So, the author experimented protein test. As the result, the fiber showed a positive reaction to Biuret and Xanthoprotein. Next, the author experimented solution test some reagents. The fiber of Ryukyu Basho was soluble in concentrated sulfric acid and nitric acid. Density of the fiber showed 1,17 ~ 1,35 generally. 続きを見る
9.

論文(リポジトリ)

論文(リポジトリ)
有住, 康則 ; 筑瀬, 明弘 ; 浜田, 純夫 ; 梶田, 建夫 ; Arizumi, Yasunori ; Chikuse, Akihiro ; Hamada, Sumio ; Kajita, Tateo
出版情報: 琉球大学工学部.  pp.69-88,  1980-09.  琉球大学工学部
URL: http://hdl.handle.net/20.500.12000/14690
概要: Recently the load factor method has been taking the place of the allowable stress method for composite members in the United States and European countries. It is the most important in the load factor design method to assure the mechanical behavior such as ultimate capacity of the structure. Ultimate strength is based on the properties of steel, concrete and shear connectors. In the present study some discussions on ultimate states are provided for composite beams with incomplete interaction applying elastic-plastic analysis. Some studies on the elastic analysis for incomplete composite beams have been presented in the bulletin by authors, and this is developed to inelastic analysis based on bilinear elasto-plastic properties of concrete, steel and shear connectors by means of the finite element method. An iterative initial strain method is employed in the present analytical procedure, where inelastic strains and deformations of materials are evaluated to the equivalent loads. This is also applied to analysis of cracked reinforced concrete beams. The main results of the analysis are as follows; (1) There is not much difference in the mechanical behavior of composite beams with shear connectors between spaced equally and spaced proportinally to horizontal shear. (2) Composite beams with partial interaction have an advantage of stress reduction on longitudinal reinforcing bars in negative moment regions, where it may be near the point of counterflection. This tendency becomes more apparent along with extent of the plastic range. 続きを見る
10.

論文(リポジトリ)

論文(リポジトリ)
吉田, 雅子 ; 上里, 賢一 ; Yoshida, Masako ; Uezato, Kenichi
出版情報: 琉球大学法文学部紀要.国文学論集 = Bulletin of the College of Law and Literature, University of the Ryukyus. Japanese Literature.  pp.1-22,  1980-01.  琉球大学法文学部
URL: http://hdl.handle.net/20.500.12000/15030