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Development of Bactericidal Photocatalytic Paints for Clean Interiors and Its Environmental Education (II)
Get PDF論文Photocatalytic paints for “clean interiors” have been developed to reduce the risk of infection in rooms. Six colors of photocatalytic paints were prepared using TiO₂, Fe₂O₃, and WO₃, and their photocatalytic bactericidal effects were evaluated under visible-light or ultraviolet-light irradiation. “A coloring workshop and lecture” for high school students was successfully held as a part of environmental education initiative.departmental bulletin pape
A fundamental study on the converting temporary housing to permanent residences after Nankai Trough Earthquake - A comparative study of Kochi City and Kami City -
Get PDF論文Kumamoto Prefecture’s approach to timber temporary housing was distinctive. Unlike traditional timber pile foundations, reinforced concrete foundations were utilized, which were subsequently repurposed as permanent housing, thereby challenging the conventional definition of “temporary” housing. Some of the timber temporary houses were converted into permanent residences, while others were demolished. Previous research indicates that the original land use of the site is a critical factor in determining the feasibility of conversion. This study aims to identify suitable sites for converting timber temporary housing into permanent structures following a large-scale disaster and to simulate the layout of these housing units to enhance disaster preparedness.departmental bulletin pape
The Thematic Background of Ryunosuke Akutagawa’s “OGIN”: A Girl’s Story of Renouncing Christianity for her Parent’s Soul Salvation, in Connection with Ougai Mori’s “SAIGO no IKKU”
Get PDF原著論文departmental bulletin pape
Utilizing the Subject - specific Expertise Instruction to Plan Moral Education Lessons: A Case of Combining of Music and Moral Education
Get PDF原著論文departmental bulletin pape
Studies on Carrier Transport Properties by Impedance Spectroscopy in Organic Thin-Film Solar Cells Using p-Type Semiconductor PM6
No full text有機薄膜太陽電池（OSC）は、次世代の太陽電池の有力な候補として期待されている。しかし、活性層はp型半導体とn型半導体から構成されるバルクヘテロ接合（BHJ）という複雑な構造を有しており、励起子拡散、電荷分離、キャリア再結合、さらにはp型およびn型半導体それぞれにおけるキャリア輸送など、複数の複雑な過程を経て光電変換が行われる。このような多段階のプロセスを伴うOSCにおいては、光電変換機構の解明は非常に困難である。そこで本研究では、OSCのキャリア輸送特性を評価する手法として、インピーダンス分光法を用いている。今回、活性層のp型半導体として、近年高効率OSC材料として注目されているPM6を、n型半導体としては、従来から広く用いられているPCBMまたは近年非フラーレンアクセプターとして注目されているY6を用いたOSCを作製した。これらのデバイスについて光電変換特性を評価するとともに、インピーダンス分光法を用いて内蔵電位やキャリア輸送特性を評価した。Organic thin-film solar cells (OSCs) are regarded as promising candidates for nextgeneration photovoltaic devices. However, the active layer of OSCs typically consists of a bulk heterojunction (BHJ) structure composed of p-type and n-type semiconductors, in which multiple processes—such as exciton diffusion, charge separation, carrier recombination, and carrier transport in both p-type and n-type materials—occur concurrently during photoelectric conversion. Due to these complex, multi-step mechanisms, it is extremely challenging to elucidate the detailed photovoltaic processes in OSCs. In this study, impedance spectroscopy was considered a useful technique for evaluating the charge transport properties of OSCs. Specifically, OSCs were fabricated using PM6, which has recently attracted attention as a high-performance p-type semiconductor material, in combination with either PCBM, a conventional n-type material, or Y6, a non-fullerene acceptor that has gained increasing attention in recent years. The photovoltaic performance of these devices was evaluated, and their built-in potential and charge transport characteristics were analyzed using impedance spectroscopy.論文：Paperdepartmental bulletin pape
The Disasters that Changed America, The Great Mississippi River Flood―Racial Discrimination, Economic Crisis and Migration―
Get PDF【概要】本論文は人種差別，経済危機，人口移動の観点から1927年のミシシッピ川大洪水のインパクトを明らかにする。大規模災害は被災地における人種差別を深刻化させたが，同時に災害報道を通じて，黒人の政治的影響力を高めた。また，災害の経済的被害は，被災地だけでなく，北部の金融資本に多大な影響を及ぼした。その結果，アメリカは自由放任から大規模な政府介入への転換を求めた。さらに，洪水を機に南部の黒人は北部へ移住し，人種差別は全米に拡大した。This paper examines the impact of the 1927 Mississippi River Flood from the perspectives of racial discrimination, economic crisis, and great migration. The great disaster exacerbated racial discrimination in the affected areas, but at the same time, through the newspaper’s disaster reporting, it increased the political influence of black people. Furthermore, the economic damage caused by the disaster had a significant impact not only on the affected areas but also on financial capital in the North. As a result, America sought to shift from laissez-faire to large-scale government intervention. Furthermore, the flood prompted black people in the South to migrate to the North, spreading racial discrimination throughout the United States.departmental bulletin pape