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一种水工钢闸门用环氧砂浆垫料

粘接 2017年第9期38卷 54-57页

作者：蔡浩浩万雄卫周志勇肖皓武大巨成结构股份有限公司湖北武汉430223 武汉大学建筑物检测与加固教育部工程研究中心湖北武汉430072

提供了一种压缩强度较高、黏度较低的水工钢闸门环氧砂浆垫料,研究了该垫料的工艺性、粘接性和耐湿热老化性。结果表明,当压缩强度达到100 MPa时,自制固化剂配方的环氧砂浆混合黏度为6 000 m Pa·s;7 d常温养护下的相对最大伸长率为0.6... 详细信息

提供了一种压缩强度较高、黏度较低的水工钢闸门环氧砂浆垫料,研究了该垫料的工艺性、粘接性和耐湿热老化性。结果表明,当压缩强度达到100 MPa时,自制固化剂配方的环氧砂浆混合黏度为6 000 m Pa·s;7 d常温养护下的相对最大伸长率为0.65%,拉伸粘接强度为3.5 MPa;90 d湿热老化剪切强度为21.9 MPa,湿热老化降低率为9.9%。

关键词：环氧砂浆高压缩强度高流动性湿热老化

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生活垃圾气化—燃烧清洁转化工艺

工业锅炉 2016年第5期 1-5页

作者：张睿智罗永浩殷仁豪上海交通大学热能工程研究所生物质能研究中心上海200240

针对生活垃圾焚烧过程中的二恶英污染问题,提出了一种新型的等离子气化—燃烧清洁转化工艺。生活垃圾由上吸式气化过程高效转化为高热值的气相产物和灰渣。气相产物通过均相转化过程完成Cl向HCl的定向转移,从源头抑制二恶英分子的生成,... 详细信息

针对生活垃圾焚烧过程中的二恶英污染问题,提出了一种新型的等离子气化—燃烧清洁转化工艺。生活垃圾由上吸式气化过程高效转化为高热值的气相产物和灰渣。气相产物通过均相转化过程完成Cl向HCl的定向转移,从源头抑制二恶英分子的生成,配合后续的分级供氧燃烧过程,实现二恶英和氮氧化物的协同控制。气化灰渣经过等离子熔融处理,形成不具污染性的玻璃体。

关键词：生活垃圾二恶英气化-燃烧工艺设计

The role of axon guidance molecules in the pathogenesis of epilepsy

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Neural Regeneration Research 2025年第5期20卷 1244-1257页

作者： Zheng Liu Chunhua Pan hao Huang Department of Neurology Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhou ProvinceChina

Current treatments for epilepsy can only manage the symptoms of the condition but cannot alter the initial onset or halt the progression of the disease. Consequently, it is crucial to identify drugs that can target novel cellular and molecular mechanisms and mechanisms of action. Increasing evidence suggests that axon guidance molecules play a role in the structural and functional modifications of neural networks and that the dysregulation of these molecules is associated with epilepsy susceptibility. In this review, we discuss the essential role of axon guidance molecules in neuronal activity in patients with epilepsy as well as the impact of these molecules on synaptic plasticity and brain tissue remodeling. Furthermore, we examine the relationship between axon guidance molecules and neuroinflammation, as well as the structural changes in specific brain regions that contribute to the development of epilepsy. Ample evidence indicates that axon guidance molecules, including semaphorins and ephrins, play a fundamental role in guiding axon growth and the establishment of synaptic connections. Deviations in their expression or function can disrupt neuronal connections, ultimately leading to epileptic seizures. The remodeling of neural networks is a significant characteristic of epilepsy, with axon guidance molecules playing a role in the dynamic reorganization of neural circuits. This, in turn, affects synapse formation and elimination. Dysregulation of these molecules can upset the delicate balance between excitation and inhibition within a neural network, thereby increasing the risk of overexcitation and the development of epilepsy. Inflammatory signals can regulate the expression and function of axon guidance molecules, thus influencing axonal growth, axon orientation, and synaptic plasticity. The dysregulation of neuroinflammation can intensify neuronal dysfunction and contribute to the occurrence of epilepsy. This review delves into the mechanisms associated with

关键词： axon guidance drug-resistant epilepsy epilepsy nerve regeneration nervous system diseases neural pathways neuroinflammatory diseases neuronal plasticity neurons synaptic remodeling

Study of engine noise based on independent component analysis

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第5期8卷 772-777页

作者： hao zhi-yong JIN Yan YANG Chen School of Mechanical and Energy Engineering Zhejiang University Hangzhou 310027 China

Independent component analysis was applied to analyze the acoustic signals from diesel engine. First the basic prin-ciple of independent component analysis (ICA) was reviewed. Diesel engine acoustic signal was decomposed into several inde-pendent components (ICs); Fourier transform and continuous wavelet transform (CWT) were applied to analyze the independent components. Different noise sources of the diesel engine were separated, based on the characteristics of different component in time-frequency domain.

关键词： Acoustic signals Independent component analysis (ICA) Wavelet transform Noise source identification

A facile enantioselective synthesis of (+)-rolipram via C-H insertion process

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合成化学 2004年第Z1期12卷 30-30页

作者： LIU Wei-jun CHEN Zhen-liang WANG Yuan-hua HU Qing-quan HUANG hao-xi CHEN zhi-yong HU Wen-hao Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China Key Laboratory for Asymmetric Synthesis and Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China

Rolipram, (±)-4-(3-cyclopentyloxyl-4-methoxylphenyl)-2-pyrrolidinone,is known as a potent and selective inhibitor of phosphodiesterase type Ⅳ(PDE Ⅳ)*** fact, although both enantiomers are active, the levorotatory isomer, for which several synthesis has been recently reported2, has proved to be the most active one. Hashimoto and Jung have repored rolipram's synthesis via intramolecular C-H insertion reaction of α -methoxylcarbonyl- α -diazoacetamide and α-phenylsulfonyl-α-diazoacetamide3,4. Based on the discovery of the excellent N-protecting group:cumyl, we have now explored a new and facile route to 1

关键词： Rolipram, enantioselective synthesis, C-H insertion, N-cumyl, chiral dirhodium(Ⅱ)carboxamide.

Degradation of refractory pollutants by hydrodynamic cavitation: Key parameters to degradation rates

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Journal of Hydrodynamics 2019年第4期31卷 848-856页

作者： zhi-yong Dong Kai Zhang Rui-hao Yao College of Civil Engineering and Architecture Zhejiang University of Technology Hangzhou 310023 China

Degradations of refractory pollutants by hydrodynamic cavitation were experimentally carried out in a self-developed hydrodynamic cavitation reactor with Venturi tubes, multi-orifice plates and their combinations. Effects of hydraulic elements of cavitation due to the Venturi tube on degradation of refractory hydrophobic pollutant were studied, and an optimal throat length corresponding to the maximum degradation rate was obtained. Effects of cavitation due to number, size and distribution of orifice for the multi-orifice plates on degradation of refractory hydrophilic pollutant were investigated, and comparisons and analyses were made. Effects of cavitation due to different combinations of the Venturi tubes with the triangular multi-orifice plates on degradation of hydrophilic and hydrophobic mixtures were studied, and an appropriate combination was determined. Also, effects of cavitation duration, pH value and initial concentration on the refractory pollutants were explored.

关键词： Hydrodynamic cavitation Venturi tube multi-orifice plate refractory pollutant combination effect

细薄星芒海绵体内微生物分布特点的透射电子显微镜观察与分析

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水产学报 2005年第1期29卷 38-42页

作者：李志勇秦恩昊蒋群黄奕何丽明上海交通大学生命科学技术学院上海交通大学生命科学技术学院上海　200240

采用透射电子显微镜对我国南海细薄星芒海绵体内微生物的分布进行了观察研究,同时结合海绵的结构特点与摄取营养的方式对分布特点进行了分析讨论。研究证明:在细薄星芒海绵体内除骨骼外的细胞间中质层、细胞内、海绵内腔等部位均分布着... 详细信息

采用透射电子显微镜对我国南海细薄星芒海绵体内微生物的分布进行了观察研究,同时结合海绵的结构特点与摄取营养的方式对分布特点进行了分析讨论。研究证明:在细薄星芒海绵体内除骨骼外的细胞间中质层、细胞内、海绵内腔等部位均分布着形态多样的微生物,其中海绵中质层是共(寄)生微生物最为丰富的地方。海绵微生物的分布特点与海绵腔状多孔的结构以及依靠过滤海水获取营养的方式有关,这对于将来揭示微生物在海绵体内的聚集机制及其与环境的关系具有重要价值。

关键词：海绵微生物透射电子显微镜

国家与社会之间——论社会中介组织对中国社会转型的影响

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天津行政学院学报 2002年第2期4卷 16-21页

作者：唐兴霖吴志军聂勇浩中山大学政治学与行政学系广州510275

中国市场经济的发展和公民社会的兴起,社会中介组织的发展是一个必然的选择。社会中介组织是政府和私营部门之外的“第三种力量”,他可以协调个人和政府之间的关系;而当前中国社会中介组织的发展却面临独立性差、功能不全、总量不足、... 详细信息

中国市场经济的发展和公民社会的兴起,社会中介组织的发展是一个必然的选择。社会中介组织是政府和私营部门之外的“第三种力量”,他可以协调个人和政府之间的关系;而当前中国社会中介组织的发展却面临独立性差、功能不全、总量不足、体制混乱等问题,因而规范政府与社会中介组织的关系,促进中介组织的发展则是当务之急。

关键词：公民社会社会中介组织社会转型

Development and preliminary results of a large-pixel two-layer LaBr_(3) Compton camera prototype

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Nuclear Science and Techniques 2023年第8期34卷 100-114页

作者： Ming-hao Dong zhi-Yang Yao yong-Shun Xiao Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Particle and Radiation Imaging(Tsinghua University) Ministry of EducationBeijing 100084China

Lanthanum bromide(LaBr_(3))crystal has a high energy resolution and time resolution and has been used in Compton cameras(CCs)over the past few ***,LaBr_(3) crystal arrays are difficult to process because LaBr_(3) is easy to crack and break;thus,few LaBr_(3)-based CC prototypes have been *** this study,we designed and fabricated a large-pixel LaBr_(3) CC prototype and evaluated its performance with regard to position,energy,and angular *** used two 10×10 LaBr_(3) crystal arrays with a pixel size of 5 mm×5 mm,silicon photomultipliers(SiPMs),and corresponding decoding circuits to construct our ***,a framework based on a Voronoi diagram and a lookup table was developed for list-mode projection data *** Carlo(MC)simulations based on Geant4 and experiments were conducted to evaluate the performance of our CC *** lateral position resolution was 5 mm,and the maximum deviation in the depth direction was 2.5 and 5 mm for the scatterer and absorber,*** corresponding measured energy resolu-tions were 7.65%and 8.44%,respectively,at 511 *** experimental results of ^(137)Cs point-like sources were consistent with the MC simulation results with regard to the spatial positions and full widths at half maximum(FWHMs).The angular resolution of the fabricated prototype was approximately 6°when a point-like ^(137)Cs source was centrally placed at a distance of 5 cm from the *** proposed and investigated a large-pixel LaBr_(3) CC for the first time and verified its feasibility for use in accurate spatial positioning of radiative sources with a high angular *** proposed CC can satisfy the requirements of radiative source imaging and positioning in the nuclear industry and medical applications.

关键词： Compton camera Large pixel Gamma camera LaBr_(3)detector Prototype evaluation