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Regeneration mechanisms and therapeutic strategies for neuromuscular junctions in aging and diseases

Neural Regeneration Research 2025年第1期20卷 193-194页

作者： Masashi Fujitani Abu Md Mamun Tarif yoshinori otani Department of Anatomy and Neuroscience Faculty of MedicineShimane UniversityShimaneJapan

The neuromuscular junction(NMJ)is an essential synaptic structure composed of motor neurons,skeletal muscles,and glial cells that orchestrate the critical process of muscle contraction(Li et al.,2018).The typical NMJ structure is classically described as having a“pretzel-like”shape in mice(Figure 1),whereas human NMJs have a smaller,fragmented structure throughout *** NMJs exhibit smaller or fragmented endplates,partial denervation,reduced numbers of synaptic vesicles,abnormal presynaptic mitochondria,and dysfunctional perisynaptic Schwann cells(Alhindi et al.,2022).

关键词： aging structure Figure

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Deformation behavior and acting earth pressure of three-hinge precast arch culvert in construction process

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Underground Space 2019年第3期4卷 251-260页

作者： Yasuo Sawamura Hiroyuki Ishihara yoshinori otani Kiyoshi Kishida Makoto Kimura Department of Civil and Earth Resources Engineering Kyoto UniversityJapan Hokkaido Branch Kajima CorporationJapan Hirose Hokyodo&Co. Ltd.Japan Department of Urban Management Kyoto UniversityJapan

The three-hinge precast arch culvert consists of two segmental precast units and three hinge *** harnesses the passive resistance of an embankment by permitting deflection,resulting in a mechanically stable ***,the design of the three-hinge precast arch culvert differs from that of a conventional culvert,prompting the mechanical behavior of the culvert to become an important *** this study,therefore,1/5 scale model tests were conducted on a three-hinge precast arch culvert to measure the changes in the inside width and earth pressure acting on the culvert at each step in order to investigate the culvert’s mechanical behavior at each construction ***,the deflection measurement of the culvert was obtained at the in-situ construction *** results indicate that the arch members were displaced according to the embankment depth in a similar manner to the design ***,the horizontal earth pressure,which was larger than the earth pressure at rest,acted on the culvert at the end of its construction.

关键词： Precast arch culvert Construction process Coefficient of earth pressure Inside width

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