http://hdl.handle.net/11133/123 2000-03 Tue, 14 Apr 2026 15:13:37 GMT 2026-04-14T15:13:37Z http://hdl.handle.net/11133/1120 タイトル: 道路防護柵の衝撃エネルギー吸収に関する実験的研究 著者: 張, 星; 青木, 徹彦 抄録: The guard fence in the road is one of important equipment that can prevent vehicles from running outside the road when they have deviated from the normal direction. It also can enhance the security of passengers, decreasing the damage of the vehicles and goods on it. So we should ensure the guard fences designed that have enough strength to avoid rupture form the shock by high-speed vehicles and also have enough plasticity to absorb shocking energy for lightening the damage of the people and vehicle. At present, the replacing and repairing of guard fences cost a great deal of money and time and effect the daily traffic badly because it is easily damaged. The purpose of the thesis is to develop a new type of guard fence that can satisfy the request of strength and plasticity and can be replaced and repaired easier and cheaper. Thu, 30 Mar 2000 15:00:00 GMT http://hdl.handle.net/11133/1120 2000-03-30T15:00:00Z http://hdl.handle.net/11133/1121 タイトル: 1999年メキシコ・テウアカン地震におけるプエブラ市地震被害調査 著者: 正木, 和明 抄録: On June 15th, 1999 erthquke of Tehuacan of magunitude 6.7 occurred in the central region of Mexico. The epicenter was located approximately 20km SW of Tehuacan city. The earthquake caused 17 deaths and 197 casualities in villages in the state of Puebla and Oaxaca. In the city of Puebla (state capital), many historical churches and structures were damaged. The auther surveyed the damages in the Puebla city three months after the earthquake. The detail of the damages are shown in this report. Thu, 30 Mar 2000 15:00:00 GMT http://hdl.handle.net/11133/1121 2000-03-30T15:00:00Z http://hdl.handle.net/11133/1122 タイトル: 光照射型熱電子コンバータの電位分布に関する研究 著者: 五島, 敬史郎; 津田, 紀生; 山田, 諄 抄録: The thermonic converter is one of direct generation, and it has many advantages. But the high operating temperature makes shortening of emitter's life. When the thermonic converter is irradiated by a light, the higher output current is obtained at the relatively lower emitter temperature. But it has not been understood why the output of the thermonic converter increased by the light irradiation. So the distribution of electric potential between the electrodes was theoretically analyzed. The potential distribution was calculated by integrating Poisson's equation. As a result of the calculation, it was seen that the photo-ionized electric charge made the potential barrier a sharp degrease. It was able to analyze quantitatively the output increase of the light irradiated thermonic converter. Thu, 30 Mar 2000 15:00:00 GMT http://hdl.handle.net/11133/1122 2000-03-30T15:00:00Z http://hdl.handle.net/11133/1123 タイトル: 洪水流速計の実用化に関する研究 著者: 高木, 克英; 四俵, 正俊 抄録: A new type of fluid depth-velocity-meter using the principle of Henri de Pitot was examined in a river during high-water. Velocity distribution of a section just downstream of a bridge was obtained. The disturbance of flow velocity by the bridge pier was observed, as well as the river bed excavation during the flood. The difference of flow rates estimated by this measurement and by the popular method using floats was discussed. Thu, 30 Mar 2000 15:00:00 GMT http://hdl.handle.net/11133/1123 2000-03-30T15:00:00Z