コイ稚魚の成長及び健康状態に及ぼすシラス及びグレープフルーツ精油の影響

東京海洋大学博士(海洋科学)東京海洋大学博士学位論文 2024年度(2025年3月) 応用生命科学 課程博士 甲716号指導教員: 舞田正志全文公表年月日: 2025-06-16doctoral thesi

An Empirical Analysis of the Linkages between Green/Blue Bonds and Social Impacts

近年、（企業や大学を含む）日本の様々な組織が、環境債（グリーンボンド）及びブルーボンドを発行し、自然資本への取り組みを加速させている。ブルーボンドは、水資源や海洋関連事業に特化した環境債を指す。本稿では、1,203社の最新の日本企業のデータに基づき、（潜在変数である）企業の「社会インパクト創出力（社会性）」と、複数の観測変数との繋がりに着目し、分析を行った。変数は、以下の通りである［環境債、CSV（共通価値の創造）事業、CE（サーキュラー・エコノミー：循環型経済社会）の取り組み、SDGs、ステークホルダー・ダイアログ（機関投資家を含む利害関係者との対話）、国際イニシアティブ（SASBスタンダード、TNFD、RE100）］。さらに、8つの産業を対象に、2種類の潜在変数（社会性と経済性）の繋がりについても、構造方程式モデリング（SEM）を用い考察を加えた。その結果、6つの産業において有意な正の相関（社会性と経済性の両立）がみられた。特に食品関連産業では、社会性と観測変数の「環境債及びブルーボンド等」との間で、有意な強い正の関連性が示された。Various Japanese organizations, including companies and universities, have begun issuing green bonds and blue bonds to accelerate their environmental initiatives. Green bonds are designed to support projects related to climate change and the environment. Similarly, the aim of blue bonds is to facilitate projects addressing problems regarding water resources and marine biodiversity. Based on an examination of 1,203 Japanese companies, this study explores the relationship between “social/economic impacts” and observed variables, such as Green/Blue Bonds, CSV (Creating Shared Value) Projects, CE (Circular Economy) Initiatives, SDGs (The Sustainable Development Goals), Multi-Stakeholder Dialogues, and Global Environmental Initiatives (The SASB Standards, TNFD, and RE100), etc. In addition, Structural Equation Modeling (SEM) was used to analyze the links between the latent variables (“Social Impact” and “Economic Performance”) in 8 industries. The findings showed that there were statistically significant correlations between the two latent variables in 6 out of 8 industries. Green/blue bonds and green loans, especially for companies in the food industry, play an important role in achieving strong social impacts.近藤久美子: 東京海洋大学海の研究戦略マネジメント機構Kumiko KONDO: Office of Management and Strategy for Marine Studies (MS-Square), Tokyo University of Marine Science and Technologydepartmental bulletin pape

Preparation, isolation and identification of novel antioxidant peptides from extruded-expanded tuna bone meal

Tuna bone, a by-product of fish processing, is rich in protein but often underutilized. This study aimed to enhance its bioavailability by preparing nanoscale tuna bone meal through extruded-expanded technology and subsequently hydrolyzing it with proteases to produce antioxidant peptides. The extruded-expanded tuna bone meal (EE-FB) exhibited a significantly reduced average particle size (296.45 nm) compared to non-extruded-expanded samples (982.85 nm). This indicates that extruded-expanded treatment has a significant effect on the particle size change of tuna bone meal, which helps to ensure sufficient contact between tuna bone meal and protease during the enzymatic hydrolysis and improve the enzymatic hydrolysis rate. Optimal enzymatic hydrolysis conditions were determined using response surface methodology: dual-enzyme (trypsin and alcalase) dosage of 4600 U·g−1, solid-liquid ratio of 1:6.90 (w/v), and hydrolysis time of 4.10 h, achieving a degree of hydrolysis (DH) of 45.06 %. The hydrolysate was fractionated by ultrafiltration, further purified by Sephadex G-15 gel chromatography, and identified six novel peptides: VQQPL, VTDLN, AGPQGP, APDPFR, GDRAFLI, and SGPAGPA by LC-ESI-MS/MS. Six novel peptides have shown the ability to scavenge free radicals (DPPH, superoxide, hydroxyl). The molecular weight of the six new peptides was <1000 Da and they exhibited antioxidant activity. This may be attributed to the hydrophobic and alkaline amino acids contained in the peptide. This study provides a rapid and efficient method for producing bioactive peptides from tuna bone, with potential applications in functional food and pharmaceutical production.公開日: 2025-06-20journal articl

Recent Achievements of the OQEANOUS Plus Program＊6 and Its Impact on Global Education at Tokyo University of Marine Science and Technology

本稿は、本学が2021年度から実施する、日中韓・ASEAN大学間の海洋分野の高度専門職業人育成を目指す学生交流事業「オケアヌスプラス」が本学のグローバル教育に与えた新たな展開について考察した。第一に、オンラインを活用した導入プログラムへの参加が、実渡航を伴う中長期留学の参加に繋がる「段階的な留学モデルコース」を確立し、学生が卒業や就職活動に支障を感じることなく、外国の大学での教育研究による単位互換・学位取得も可能とし、学生の流動性を高められた。第二に、多様なアジアの大学間で、国際的な基準に配慮した質の保証を伴う単位互換ガイドラインCTSEAAを制定した。第三に、オンラインの活用がプログラムの教育効果を高め、コミュニケーションの機会を増やす手段として有効であること、そして第四に、教職員間ネットワークの強化が事業実施の重要な基盤となることを示した。また、初めての修了生アンケート結果の分析から、オケアヌスプラスの教育効果及び課題を確認できた。引き続き、事業最終年度（2025年度）に向けて、特に、留学による学びの可視化に取り組み教育効果を検証し、本学のグローバル教育に資する成果を目指す。This report examines the impact of the OQEANOUS Plus Program (OPP), a student exchange framework with quality assurance established between seven leading marine universities in Japan, China, ROK and ASEAN, on global education initiatives at Tokyo University of Marine Science and Technology. The OPP has demonstrated significant influence in four primary areas: (1) the provision of online and hybrid short-term introductory courses has established a phased study abroad model, leading students progressively engage in longer-term on-site exchange courses enabling seamless credit transfers and double-degree opportunities, without imposing any career constraints; (2) CTSEAA was established and authorized as a fundamental guideline on credit transfers and academic record conversions, ensuring quality assurance in international student exchanges; (3) the strategic integration of online platforms has enhanced both the quality of education and cross-cultural communication opportunities; and (4) building a strong professional network among academic and administrative personnel is the key to the successful execution of the OPP. Furthermore, post-program student surveys have revealed not only positive educational outcomes but also areas that require further attention, offering valuable insights for the future evolution of the program.中馬愛: 東京海洋大学学務部国際・教学支援課Ai CHUMAN: Academic Support and International Division, Tokyo University of Marine Science and Technology (TUMSAT)八田育美: 東京海洋大学学務部国際・教学支援課Ikumi HATTA: Academic Support and International Division, Tokyo University of Marine Science and Technology (TUMSAT)加賀絵里奈: 東京海洋大学学務部国際・教学支援課Erina KAGA: Academic Support and International Division, Tokyo University of Marine Science and Technology (TUMSAT)飯野知宏: 東京海洋大学学務部教務課Tomohiro IINO: Academic Affairs Division, Tokyo University of Marine Science and Technology (TUMSAT)申蓮花: 東京海洋大学学務部国際・教学支援課Lianhua SHEN: Academic Support and International Division, Tokyo University of Marine Science and Technology (TUMSAT)小山裕子: 東京海洋大学学務部国際・教学支援課Yuko OYAMA: Academic Support and International Division, Tokyo University of Marine Science and Technology (TUMSAT)呉海云: 東京海洋大学学術研究院海洋環境科学部門Haiyun WU: Department of Ocean Sciences, Tokyo University of Marine Science and Technology (TUMSAT)廣野育生: 東京海洋大学学術研究院海洋生物資源学部門Ikuo HIRONO: Department of Marine Biosciences, Tokyo University of Marine Science and Technology (TUMSAT)舞田正志: 東京海洋大学Masashi MAITA: Tokyo University of Marine Science and Technology (TUMSAT)departmental bulletin pape

Captive spawning of cone snails, Conus fulmen and Conus pulicarius (Gastropoda: Neogastropoda: Conidae)

Laboratory culture experiments have been conducted to investigate larval development in cone snails of the genus Conus, primarily focusing on Hawaiian species. As a foundation for studying the larval biology of Japanese Conus species, the present study examined captive spawning in C. fulmen and C. pulicarius. Conus fulmen was cultured in aquariums at 24, 26, and 28 °C, and C. pulicarius at 23 and 26 °C. Spawning occurred at 24 °C for C. fulmen and at 26 °C for C. pulicarius, with both species producing egg capsules containing viable eggs.公開日: 2025-06-01journal articl

2023/2024 Annual Cruise Report of the T/V Shinyo Maru Voyage : 【SY-22-12】Cruise Report

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紅藻ツノマタ類における世代間の生理生態学的比較

東京海洋大学博士(海洋科学)東京海洋大学博士学位論文 2024年度(2025年3月) 応用環境システム学 課程博士 甲733号指導教員: 神谷充伸doctoral thesi

2023/2024 Annual Cruise Report of the T/V Umitaka Maru Voyage : 【UM-22-04】 Cruise Report

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Reading the Revolution Against the Thermidorians――Memorandum on Éric Hazan's work "A History of the French Revolution"――

本稿はエリック・アザンの著作『フランス革命史』についての覚書である。アザンのこの書は、大革命時代の議員、革命家、人民、女性たちの発言を、議会の議事録、新聞、冊子から直接引用し、それらをモンタージュしたものである。しかしテルミドール9日のロベスピエールの没落前後の、現在残されている資料は、総裁政府時代に再構成されたものであることが、今日では判明している。アザンは、テルミドール派の改竄を越えて、革命家たちの直の声を聞くようにわれわれを誘う。彼らの演説は、政治的な発言においては稀に見る、詩的な強度を備えているのである。This article is a memorandum on Éric Hazan's work A History of the French Revolution. Hazan's book is a montage of direct quotes from the speeches of deputies, revolutionaries, the people, and women during the revolutionary era, taken from parliamentary records, newspapers, and pamphlets. However, it is now known that the documents concerning Robespierre's downfall around Thermidor 9 were reconstructed during the time of the Directory. Hazan invites us to listen to the direct voices of the revolutionaries, beyond the alterations made by the Thermidorians. Their speeches possess a rare poetic intensity in political discourse.小山尚之: 東京海洋大学学術研究院海洋政策文化学部門Naoyuki KOYAMA: Department of Marine Policy and Culture, Tokyo University of Marine Science and Technology (TUMSAT)departmental bulletin pape

クルマエビの筋肉白濁症に関する分子生物学的研究

東京海洋大学博士(海洋科学)東京海洋大学博士学位論文 2024年度(2025年3月) 応用生命科学 課程博士 甲720号指導教員: 廣野育生doctoral thesi