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Dendritic spine degeneration:a primary mechanism in the aging process

Neural Regeneration Research 2025年第6期20卷 1696-1698页

作者： Gonzalo Flores Leonardo Aguilar-Hernández fernado garcía-dolores Humberto Nicolini Andrea Judith Vázquez-Hernández Hiram Tendilla-Beltrán Instituto de Fisiología Benemérita Universidad Autónoma de Puebla(BUAP)PueblaMexico Instituto de Ciencias Forenses(INCIFO) Tribunal Superior de Justicia de la Ciudad de México(TSJCDMX).Mexico CityMexico Instituto Nacional de Medicina Genómica(INMEGEN) Mexico CityMexico

Recent reports suggest that aging is not solely a physiological process in living beings;instead, it should be considered a pathological process or disease(Amorim et al., 2022). Consequently, this process involves a wide range of factors, spanning from genetic to environmental factors, and even includes the gut microbiome(GM)(Mayer et al., 2022). All these processes coincide at some point in the inflammatory process, oxidative stress, and apoptosis, at different degrees in various organs and systems that constitute a living organism(Mayer et al., 2022;AguilarHernández et al., 2023).

关键词： aging process stress

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极化合成孔径雷达海面成像模拟及分析

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光谱学与光谱分析 2011年第10期31卷 2643-2646页

作者：郭丁顾行发余涛 fernado N 李娟陈兴峰电子科技大学四川成都610054 遥感科学国家重点实验室中国科学院遥感应用研究所北京100101 那不勒斯大学意大利那波里80133

海浪极化SAR成像模拟对海面散射的研究有重要的意义。基于海浪谱理论,在考虑大、小尺度海浪影响的基础上,构建了双尺度的随机粗糙海面。根据该海面模型,利用Bragg散射模型,小扰动模型与速度聚束理论,模拟了不同状况下海浪的极化SAR图像... 详细信息

海浪极化SAR成像模拟对海面散射的研究有重要的意义。基于海浪谱理论,在考虑大、小尺度海浪影响的基础上,构建了双尺度的随机粗糙海面。根据该海面模型,利用Bragg散射模型,小扰动模型与速度聚束理论,模拟了不同状况下海浪的极化SAR图像。并针对海浪参数对极化图像的影响进行了分析,结果符合成像统计特性,得出了一些有益于海浪信息提取的结论,并可以为海洋卫星的设计与海洋研究提供一种行之有效的手段。

关键词： SAR 极化电磁散射成像模拟海洋表面

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Mixing in Shallow Waters: Measurements, Processing, and Applications

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Journal of Ocean University of China 2005年第4期4卷 293-305页

作者： Iossif Lozovatsky Elena Roget H.J.S.fernado Environmental Fluid Dynamics Program Arizona State UniversityTempe85287-6106U.S.A. P.P.Shirshov Institute of OceanologyRussian Academy of SciencesMoscow117851Russia University of Girona Girona E-17071CataloniaSpain Environmental Fluid Dynamics Program Arizona State UniversityTempe85287-6106U.S.A.

Microstructure profiling measurements taken on a shallow Black Sea shelf and in Lake Banyoles and Boadella reservoir （Both in Spain） are analyzed to investigate the influence of boundary-layer-induced turbulence of various sources on mixing in the water interior. The state of turbulence in shallow waters is examined and details of microstructure data processing and error analysis are discussed. The dependence between averaged activity parameter A6 and buoyancy Reynolds number Reb for the shelf turbulence indicates that for Reb 〈 1 the state of turbulence can be described by the fossil turbulence model, which postulates AG - Re b^1/2. For Reb 〉 1, however, the influence of Reb on Ao is weak, signifying that the buoyancy Reynolds number can no longer serve as the governing parameter for active turbulent mixing. The generation of turbulence by a one-minute long wind bursts （the Boadella reservoir） increases the averaged dissipation rate （ε） of the surface mixed layer by more than 5 times （up to 3 × 10^-6 W kg^-1）. The influence of the wind bursts was also traced below the thermocline, where turbulent patches with （ε） = （10^-7 - 10^-6） W kg^-1 were generated. It is shown that the geothermal convection in Lake Banyoles produces intermittent turbulent patches with characteristic dissipation rate （ε） = （2 × 10^-8- 3 × 10^-7） W kg^-1, which influences the overall vertical mixing in the basin.

关键词： mixing turbulence microstructure dissipation diffusivity convection shallow basins 1672-5182(2005)04-293-13

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