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タイトル: Latest and comprehensive mitochondrial DNA haplotype data on green and hawksbill turtles collected in their habitats in Japan著者: Hamabata, Tomoko; Kameda, Kazunari; Hayashi, Ryota; Okuyama, Junichi; Kawazu, Isao; Nishizawa, Hideaki

タイトル: Unraveling fine-scale genetic structure in endangered hawksbill turtle (Eretmochelys imbricata) in Indonesia: implications for management strategies著者: Sani, Lalu M. Iqbal; Jamaludin,; Hadiko, Gunawan; Herma, Ema; Inoguchi, Emi; Jensen, Michael P.; Madden, Christine A.; Nishizawa, Hideaki; Maryani, Leni; Farajallah, Achmad; Subhan, Beginer; Bengen, Dietriech G.; Madduppa, Hawis抄録: Indonesia is an archipelagic country that provides important nesting and foraging habitats for the critically endangered hawksbill turtle (Eretmochelys imbricata). Although many studies have investigated this migratory species globally, there is a lack of information on the population structure and geographic boundary of this species in Indonesia. This study aims to investigate the genetic diversity and population structure of six nesting sites in the Java Sea region of Indonesia. The control region (d-loop) sequence (818 bp) was obtained from 152 individuals, resulting in 20 haplotypes. ...

タイトル: Overview of the population genetics and connectivity of sea turtles in the East Asia Region and their conservation implications著者: Ng, Connie Ka Yan; Ishihara, Takashi; Hamabata, Tomoko; Nishizawa, Hideaki; Liu, Min; Song, Jia-hao; Li, Tsung Hsien; Fong, Chia-Ling; Moon, Dae Yeon; Kim, Il Hun抄録: Understanding the current status and recent development of the population genetics and connectivity of sea turtles is crucial for effective conservation management of the species. Five sea turtle species, green turtle (Chelonia mydas), loggerhead turtle (Caretta caretta), hawksbill turtle (Eretmochelys imbricata), olive ridley turtle (Lepidochelys olivacea) and leatherback turtle (Dermochelys coriacea), are recorded in the East Asia Region situated in the western side of the North Pacific Ocean. We compiled information from 35 published genetic studies on the five sea turtle species, with a focus on green turtle and loggerhead turtle, which are the most studied species (in ...

タイトル: 2023年度「アクチノイドの物性化学とその応用・原子炉照射医療用RI製造に関する専門研究会」報告書著者: 山村, 朝雄; 吉永, 尚生; 鈴木, 実; 角山, 雄一; 島田, 隆; 志水, 陽一記述: 2023年度「アクチノイドの物性化学と応用・原子炉照射医療用RI製造に関する専門研究会」; 日時 : 2023年3月7日(木) 10:00 - 3月4日(金) 12:00 場所 : 第1研究棟セミナー室(I-207)（Zoomとのハイブリッドで開催）

タイトル: Meshless Non-Parametric Shape Design of Piecewise Approximately Developable Surfaces Using Discretized Local Gauss Map著者: Hayakawa, Kentaro; Ohsaki, Makoto; Zhang, Jingyao抄録: A meshless and non-parametric approach is proposed for shape design of curved surfaces consisting of approximately developable surface patches. A local Gauss map is defined at the grid point of a surface, and its developability is evaluated based on the area of the local Gauss map. An optimization problem is formulated for minimizing the sum of square areas of the local Gauss map at the grid points of the surface with specified boundary shape. Internal boundaries between the approximately developable surface patches are generated by relaxing the developability at the selected grid points. The effectiveness of the proposed method for generating various shapes of piecewise approximately developable surface is demonstrated in the numerical examples.

Title: Identification of cheese rancidity-related lipases in Aspergillus oryzae AHU 7139Authors: Chintagavongse, Napaporn; Kumura, Haruto; Hayakawa, Toru; Wakamatsu, Jun-ichi; Tamano, KoichiAbstract: The adjunct product with enzymatic activity from Aspergillus oryzae is beneficial for flavor enrichment in the ripened cheese. However, an excessive lipolytic reaction leads to the release of volatile free fatty acids. Accordingly, a strong offflavor (i.e., rancidity) has been detected when A. oryzae AHU 7139 is used. To identify the rancidity -related lipase from this strain, we evaluated the substrate specificity and lipase distribution using five mutants cultured on a whey -based solid medium under different initial pH conditions. The results showed a higher diacylglycerol lipase activity than triacylglycerol lipase activity. Moreover, an initial pH of 6.5 for the culture resulted in higher lipolytic activity than a pH of 4.0, and most of the activity was found in the extracellular frac ...

Title: Topology Optimization of a Surface Permanent Magnet Motor With High Torque DensityAuthors: Hayashi, Shogo; Yatsurugi, Manabu; Kubota, Yoshihisa; Soma, Shingo; Igarashi, HajimeAbstract: This article introduces a topology optimization method for a surface permanent magnet (SPM) motor with high torque density suitable for air mobility. The proposed method can be used to determine the material distribution and magnetization direction in PMs to maximize the torque density at a constant current. The torque performance of the optimized motor is superior to that of a conventional motor with a Halbach array, whose magnetization varies linearly along the circumferential direction. The novel optimized motor has a triangular magnetic material on the rotor surface and an air region inside the rotor.

Title: A Comprehensive Optimal Design of Inductors Using Monte Carlo Tree SearchAuthors: Yin, Shuli; Sato, Hayaho; Igarashi, HajimeAbstract: This article presents a strategy of optimizing inductors with non-linear properties, using Monte Carlo tree search (MCTS). Compared with the existing optimization tools, the proposed method can simultaneously optimize global configuration, such as material, number of turns and winding arrangement, and local geometry. It indicates that the strategy statistically provides a best solution from global and local aspects after iterations with different lengths of chromosomes, which is challenging in conventional optimization techniques. The covariance matrix adaptation evolution strategy (CMA-ES) is used to solve the parametric optimization. For validation, the optimizations on 2-D inductors are performed. The proposed method is very suitable for the optimization of devices with possibly different global configurations. The most notable originality of t ...

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Doctrine for tactical nuclear weapons outlined in training scenarios for an invasion by China