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The dry-hot feedback between soil moisture and atmosphere and the accelerated global warming

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Science China Earth Sciences 2024年第3期67卷 890-891页

作者： Tianjun zhou State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Greenhouse gas (GHG) emissions have been increasing due to human activities since the Industrial Revolution, resulting in continuous warming of the global climate system and significant drought over a large parts of global land, both have shown a non-linear growth trend in recent decades(Berg et al., 2017;zhou et al., 2019;IPCC, 2021).

关键词： warming moisture drought

Inverse aerodynamic design for distributed propulsion wing with expected circulation distribution

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CHINESE JOURNAL OF AERONAUTICS 2024年第9期37卷 206-223页

作者： Sun, Pengbo zhou, zhou Li, Xu Wang, Kelei Northwestern Polytech Univ Sch Aeronaut Xian 710072 Peoples R China

Distributed Propulsion Wing (DPW) technology offers significant advantages in terms of flight energy savings, but the strong aerodynamic coupling between the propulsive internal flow and aerodynamic external flow brings significant design challenges. As the primary DPW profile design is of great significance, this paper proposes a hybrid method to solve the inverse problem mainly based on the formula relationship between the required aerodynamic loads and the profile shape, which is more direct and instructive compared with traditional parametric iterative methods. The aerodynamic characteristics are described by the circulation distribution in the Fourier series form, then the mean camber line of the profile is solved through the re-derived airfoil theory considering disk's influence. Further CFD correction methods are also proposed. To validate the effectiveness and feasibility of the proposed hybrid inverse method, several DPW profile design tests are then conducted. Finally, the relationship between 2D and realistic 3D unit shape is also researched. The results show that the proposed inverse design method has great accuracy and convergence speed in the design tests, and shows good robustness against changes of the design parameters. The 2D profile shape and the actual 3D shape of DPW unit can establish an aerodynamicpropulsion equivalent relationship based on the same internal mass fluxes. (c) 2024 Production and hosting by Elsevier Ltd. on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY-NC-ND license (http://***/ licenses/by-nc-nd/4.0/).

关键词： Inverse problem Aerodynamic load Fourier series Flux FLOW SIMULATION SHAPE DESIGN HYBRID OPTIMIZATION

Surface wave inversion with unknown number of soil layers based on a hybrid learning procedure of deep learning and genetic algorithm

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 345-358页

作者： Zan zhou Thomas Man-Hoi Lok Wan-Huan zhou Department of Civil and Environmental Engineering Faculty of Science and TechnologyUniversity of MacaoMacaoChina

Surface wave inversion is a key step in the application of surface waves to soil velocity ***,a common practice for the process of inversion is that the number of soil layers is assumed to be known before using heuristic search algorithms to compute the shear wave velocity profile or the number of soil layers is considered as an optimization ***,an improper selection of the number of layers may lead to an incorrect shear wave velocity *** this study,a deep learning and genetic algorithm hybrid learning procedure is proposed to perform the surface wave inversion without the need to assume the number of soil ***,a deep neural network is adapted to learn from a large number of synthetic dispersion curves for inferring the layer ***,the shear-wave velocity profile is determined by a genetic algorithm with the known layer *** applying this procedure to both simulated and real-world cases,the results indicate that the proposed method is reliable and efficient for surface wave inversion.

关键词： surface wave inversion analysis shear-wave velocity profile deep neural network genetic algorithm

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隧洞涌水量预测计算方法研究进展

工程地质学报 2019年第4期27卷 890-902页

作者：吴建周志芳李鸣威陈朦河海大学地球科学与工程学院

涌水灾害问题广泛存在于隧洞工程的建设之中,它直接关系到施工进度、洞室稳定性及人身安全。目前国内外学者研究出大量的隧洞涌水量预测计算方法,但不同计算方法具有不同的适用条件和优缺点,选取合理的计算方法对于计算结果的准确性至... 详细信息

涌水灾害问题广泛存在于隧洞工程的建设之中,它直接关系到施工进度、洞室稳定性及人身安全。目前国内外学者研究出大量的隧洞涌水量预测计算方法,但不同计算方法具有不同的适用条件和优缺点,选取合理的计算方法对于计算结果的准确性至关重要。本文将当前广泛应用的隧洞涌水量预测计算方法分类总结为4种:经验公式法、解析公式法、数值计算法和物理模拟法。经验公式法多来源于大量工程案例的总结,着重于相似地质条件下隧洞涌水量计算;解析公式法则基于严密的理论推导过程,计算过程快速简洁;数值计算法适用于复杂水文地质条件下涌水问题的计算;物理模拟法借助于试验的手段,直观地显现出隧洞的涌水规律。本文对现有计算方法的理论原理、适用条件和优缺点进行了详细的总结,并展望了隧洞涌水问题的未来研究方向。

关键词：隧洞涌水量预测经验公式解析公式数值计算物理模拟

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岩土体渗透性参数现场快速测试系统开发

岩石力学与工程学报 2008年第6期27卷 1292-1296页

作者：周志芳王仲夏曾新翔杨建陈卫东河海大学土木工程学院江苏南京210098 中国水电工程顾问集团公司成都勘测设计研究院四川成都610072

基于单井内水流运动的振荡原理,开发了用于岩土体渗透性参数现场快速测试的系统(HSZK–01),使现场快速、高效测试岩土体渗透性参数成为可能。概要介绍该系统的功能、构成和现场操作步骤。基于变频水头测试仪(HGW–01)得到的数据,运用VB... 详细信息

基于单井内水流运动的振荡原理,开发了用于岩土体渗透性参数现场快速测试的系统(HSZK–01),使现场快速、高效测试岩土体渗透性参数成为可能。概要介绍该系统的功能、构成和现场操作步骤。基于变频水头测试仪(HGW–01)得到的数据,运用VB语言开发了数据处理软件,实现数据处理和参数计算自动化。本测试系统不仅能快速、准确地测定岩土体渗透性参数,而且对地下水及周边环境几乎不造成任何影响。在同一试验井内分别进行振荡试验和抽水试验,采用多种方法计算参数,发现两种试验结果基本一致;计算求得的参数值在同一数量级,表明该测试系统的可靠性和计算理论的准确性。

关键词：岩土力学渗透系数现场测试仪器振荡试验

Enhanced autophagic clearance of amyloid-βvia histone deacetylase 6-mediated V-ATPase assembly and lysosomal acidification protects against Alzheimer's disease in vitro and in vivo

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Neural Regeneration Research 2025年第9期20卷 2633-2644页

作者： Zhimin Long Chuanhua Ge Yueyang Zhao Yuanjie Liu Qinghua Zeng Qing Tang zhifang Dong Guiqiong He Institute of Neuroscience School of Basic Medical SciencesChongqing Medical UniversityChongqingChina Department of Anatomy Chongqing Medical UniversityChongqingChina Department of Physiology Chongqing Medical UniversityChongqingChina Pediatric Research Institute Children’s Hospital of Chongqing Medical UniversityChongqingChina Ministry of Education Key Laboratory of Child Development and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina National Clinical Research Center for Child Health and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina

Recent studies have suggested that abnormal acidification of lysosomes induces autophagic accumulation of amyloid-βin neurons,which is a key step in senile plaque ***,resto ring normal lysosomal function and rebalancing lysosomal acidification in neurons in the brain may be a new treatment strategy for Alzheimer's *** acetylation/deacetylation plays a central role in lysosomal ***,we show that inhibiting the classic microtubule deacetylase histone deacetylase 6 with an histone deacetylase 6 shRNA or thehistone deacetylase 6 inhibitor valproic acid promoted lysosomal reacidification by modulating V-ATPase assembly in Alzheimer's *** rthermore,we found that treatment with valproic acid markedly enhanced *** clearance of amyloid-βaggregates,and ameliorated cognitive deficits in a mouse model of Alzheimer's *** findings demonstrate a previously unknown neuroprotective mechanism in Alzheimer's disease,in which histone deacetylase 6 inhibition by valproic acid increases V-ATPase assembly and lysosomal acidification.

关键词： Alzheimer's disease amyloid-β APP/PS1 mice autophagy cognitive impairment histone deacetylase 6 lysosomal acidification microtubule acetylation valproic acid V-ATPase

融合与创新:传统会计中物质流成本会计的导入研究

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河南师范大学学报（哲学社会科学版） 2016年第6期43卷 123-128页

作者：刘三红肖序周志方中南大学商学院湖南长沙410083 绍兴文理学院浙江绍兴312000

随着ISO14051的公布与执行,物质流成本会计(MFCA)已经证明其在环境管理中的重要作用,在我国企业的现有会计系统中导入MFCA显得尤为重要。MFCA和传统会计存在一定的互通性,可以从基本概念结构、信息与数据基础、核算程序与方法、信息披... 详细信息

随着ISO14051的公布与执行,物质流成本会计(MFCA)已经证明其在环境管理中的重要作用,在我国企业的现有会计系统中导入MFCA显得尤为重要。MFCA和传统会计存在一定的互通性,可以从基本概念结构、信息与数据基础、核算程序与方法、信息披露与报告以及循环反馈与优化应用模式等五个方面实现MFCA和传统会计系统的融合与互通。将MFCA顺利导入传统会计系统,可以弥补传统会计不能兼顾环境和经济效益的缺陷,使物质流转过程中的损失"可视化",更好地为企业环境管理服务。

关键词：物质流成本会计(MFCA) 传统会计循环经济企业管理

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CEO家乡认同、融资约束与企业环境违规

中南大学学报（社会科学版） 2023年第1期29卷 82-95页

作者：周志方韩尚杰史琦聂磊中南大学商学院湖南长沙410083 中南大学两型社会与生态文明协同创新中心湖南长沙410083

以2010—2019年沪深A股重污染行业上市企业为样本,以CEO家乡认同为切入点,考察了非正式制度的环境后果,实证检验了CEO家乡认同对企业环境违规的影响以及融资约束的调节作用。结果表明,CEO家乡认同减少了企业环境违规,而融资约束削弱了CE... 详细信息

以2010—2019年沪深A股重污染行业上市企业为样本,以CEO家乡认同为切入点,考察了非正式制度的环境后果,实证检验了CEO家乡认同对企业环境违规的影响以及融资约束的调节作用。结果表明,CEO家乡认同减少了企业环境违规,而融资约束削弱了CEO家乡认同对企业环境违规的影响。进一步的研究发现:当企业位于外部环境监管较弱的地区或市场竞争较激烈的行业,CEO家乡认同能够有效降低企业环境违规的发生频率;当外部环境规制较强、市场竞争程度较低时,即使面临较高的融资约束,CEO家乡认同也能够有效降低企业环境违规发生的可能性。

关键词：家乡认同社会认同环境违规融资约束

The prescribed Gauduchon scalar curvature problem in almost Hermitian geometry

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Science China Mathematics 2024年第10期67卷 2357-2372页

作者： Yuxuan Li Wubin zhou Xianchao zhou School of Mathematical Sciences Tongji UniversityShanghai 200092China Department of Applied Mathematics Zhejiang University of TechnologyHangzhou 310023China

In this paper,we consider the prescribed Gauduchon scalar curvature problem on almost Hermitian *** deducing the expression of the Gauduchon scalar curvature under the conformal variation,we reduce the problem to solving a semi-linear partial differential equation with exponential *** the super-and sub-solutions method,we show that the existence of the solution to this semi-linear equation depends on the sign of a constant associated with the Gauduchon *** the sign is negative,we give both necessary and sufficient conditions such that a prescribed function is the Gauduchon scalar curvature of a conformal Hermitian ***,this paper recovers the Chern-Yamabe problem,the Lichnerowicz-Yamabe problem,and the Bismut-Yamabe problem.

关键词： almost Hermitian manifold Gauduchon connection prescribed scalar curvature problem