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Chinese Science Bulletin 1997年第3期42卷 240-243页

作者： Zhai, JP hu, k Lu, JJ Department of Earth Sciences Nanjing University Nanjing 210093 China

THE Rushan gold deposit, being of quartz-vein type, is located in biotite monzonitic granite of kunyushan complex pluton in eastern Shandong, China, and the orebody No. 2 is the largest mono-vein deposits found in China. The gold mineralization can be divided into three stages according to crisscross relations of the various microlodes in the deposit: Ⅰ. pre-ore stage of comb-structured milky-white quartz veins; Ⅱ. main mineralization stage of multi-metal sulphides and siderite-quartz veins; Ⅲ. post-ore stage of mottled cryptocrystalline quartz veins.

关键词： granite quartz-vein type gold deposit ore-forming fluid origin of deposit.

Sensation of pleasant touch:from molecules to circuits and behaviours

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Signal Transduction and Targeted Therapy 2022年第9期7卷 3187-3189页

作者： Ruining hul Rongfeng k.hu Institute for Translational Brain Research Fudan UniversityShanghai 200032China Department of Psychology Zhongshan HospitalInstitute for Translational Brain ResearchState Key Laboratory of Medical NeurobiologyMOE Frontiers Center for Brain ScienceFudan UniversityShanghai 200032China

A recent study by Liu et *** a crucial role of the PROk2-PROkR2 signalling within the spinal circuit in pleasant touch sensation(Fig.1),providing the first evidence for the molecular and neural basis of how pleasant touch information is encoded and integrated from the skin to the spinal cord and highlighting the important role of neuropeptides in the processing of somatosensory information1(Fig.1).

关键词： sensation touch providing

FACEts of mechanical regulation in the morphogenesis of craniofacial structures

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International Journal of Oral Science 2021年第1期13卷 1-16页

作者： Wei Du Arshia Bhojwani Jimmy k.hu State key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases&Department of Cariology and Endodontics West China Hospital of StomatologySichuan UniversityChengduChina School of Dentistry University of California Los AngelesLos AngelesCAUSA Molecular Biology Institute University of California Los AngelesLos AngelesCAUSA

During embryonic development,organs undergo distinct and programmed morphological changes as they develop into their functional *** genetics and biochemical signals are well recognized regulators of morphogenesis,mechanical forces and the physical properties of tissues are now emerging as integral parts of this process as *** physical factors drive coordinated cell movements and reorganizations,shape and size changes,proliferation and differentiation,as well as gene expression changes,and ultimately sculpt any developing structure by guiding correct cellular architectures and *** this review we focus on several craniofacial structures,including the tooth,the mandible,the palate,and the *** discuss the spatiotemporal regulation of different mechanical cues at both the cellular and tissue scales during craniofacial development and examine how tissue mechanics control various aspects of cell biology and signaling to shape a developing craniofacial organ.

关键词： architectures organs morphogenesis

A MICROMECHANICAL MODEL FOR γ-TiAl BASE PST CRYSTALS

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Acta Metallurgica Sinica(English Letters) 2005年第6期18卷 686-694页

作者： J.L. Su G.k. hu School of Mechanics-Electrics Engineering Fujian Agriculture and Forestry University Fuzhou 350002 China Department of Applied Mechanics Beijing Institute of Technology Beijing 100081 China

An analytical micromechanical method is proposed to examine the dependence of plastic deformation on the microstructure for a PST crystal. The sub-domain microstructure of the γ phase and the effect of the α2 phase are taken into account by a proper micromechanical formulation, the dislocation slip and twinning deformation mechanisms are considered in the context of crystal plasticity. The model can well predict the dependence of stress-strain relations on loading angle with respect to the microstructure. The influence of the twinning and lamellar spacing on the deformation behavior and biaxial yield surfaces for PST crystals are also examined.

关键词： TiAI alloy crystal plasticity micromechanical model yield surface

A New Pregnane Glycoside from Dioscorea collettii var. hypoglauca

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Chinese Chemical Letters 1998年第8期9卷 739-742页

作者： hu, k Dong, AJ kobayashi, H Iwasaki, S Yao, XS Shenyang Pharmaceut Univ Dept Nat Prod Chem Shenyang 110015 Peoples R China NE Pharmaceut Co Inst Drug Res & Dev Shenyang 110026 Peoples R China Univ Tokyo Inst Mol & Cellular Biosci Tokyo 113 Japan

A new pregnane glycoside hypoglaucin G was isolated from Dioscorea collettii var. hypoglauca by bioactivity-guided fractionation, which showed a moderate activity of inducing morphological deformation of the Pyricularia oryzae mycelia. The structure of hypoglaucin G was established as 16 beta-(4'-methyl-5'-O-beta-D-glucopyranosyl-pentanoyloxy)-pregn-5-en-3 beta-ol-20-one 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)-]-beta-D-glucopyranoside by chemical evidence and spectral analysis, especially by 2D-NMR techniques.

关键词： hypoglaucin G Dioscorea collettii var. hypoglauca Pyricularia oryzae

Ti_2Ni HYDRIDE COMPOSITE AS HYDROGEN CATHODE FORALkALINE WATER ELECTROLYSIS

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Acta Metallurgica Sinica(English Letters) 1997年第3期10卷 184-187页

作者： W k hu H、T Yuan F.P. Wangand Y、S. Zhang (Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China) Nankai Univ Tianjin China

A new cathode with Ti2 Ni alloys and Ni/Mo electrocatalyst has been developed for alkaline water electrolysis. The characterization for hydrogen evolution reaction (HER)is carried out in a 30 wt% potassium hydroxide (kOH) solution. The cathode shows a low hydrogen overpotential(η=60 mV at 70℃ in 30 wt% kOH) and ezcellent stability under conditions of continuous electrolysis and intermittent electrolysis with power interruption .

关键词： composite hydrogen cathode hydrogen evolution reaction polarization curve

Safe formation control of multiple unmanned aerial vehicles:control design and safety-stability analysis

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Control Theory and Technology 2024年第3期22卷 442-454页

作者： Haoqi Li Jiangping hu Qingrui Zhou Bijoy k.Ghosh School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Yangtze Delta Region Institute(huzhou) University of Electronic Science and Technology of ChinaHuzhou 313000ZhejiangChina Qian Xuesen Laboratory of Space Technology China Academy of Space TechnologyBeijing 100094China Department of Mathematics and Statistics Texas Tech UniversityLubbockTX 79409-1042USA

Both safety and stability are primary performance criteria for multi-unmanned aerial vehicle(multi-UAV)systems in many coordination *** approaches often consider safety and stability *** is necessary and urgent to develop a safety-stability control strategy to merge these two performance *** this paper,a unified approach is developed to consider safety and stability for multi-UAV formation *** stability criterion is represented by a Lyapunov function and safety criterion is represented by a barrier function and then a relaxed converse control Lyapunov-barrier theorem is *** the help of a relaxed converse control Lyapunov-barrier function(RCCLBF),a distributed safety-stability formation control strategy is proposed for the multi-UAV *** transforming the solution of RCCLBF to a Lyapunovlike stabilization problem,we show that the proposed formation control strategy can drive the UAVs staying within a specified safe *** results are provided to validate the proposed safety-stability formation control strategy.

关键词： Multi-UAV system Formation control Lyapunov function Barrier function Stability with safety guarantee

青藏高原及其周边石炭纪综合地层、生物群与古地理演化

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中国科学：地球科学 2024年第4期54卷 1091-1124页

作者：胡科毅王向东王文琦宋英凡叶训焱李璐史宇坤杨孙容李莹南京大学地球科学与工程学院内生金属矿床成矿机制研究国家重点实验室关键地球物质循环前沿科学中心南京210023

石炭纪时青藏高原及其周边分处不同的古地理位置,具有不同的沉积和生物类型.系统梳理和总结青藏高原的石炭系及生物群,建立综合地层对比框架,恢复古地理,对正确理解晚古生代冈瓦纳大陆的裂解、古特提斯洋的演变都具有重要意义.青藏高原... 详细信息

石炭纪时青藏高原及其周边分处不同的古地理位置,具有不同的沉积和生物类型.系统梳理和总结青藏高原的石炭系及生物群,建立综合地层对比框架,恢复古地理,对正确理解晚古生代冈瓦纳大陆的裂解、古特提斯洋的演变都具有重要意义.青藏高原及其周边的石炭系可划分为三种类型:冈瓦纳型、基默里型和特提斯型.本文讨论的冈瓦纳型包括藏南区的北喜马拉雅分区、康马-隆子分区和札达-仲巴分区,以及印度-巴基斯坦北部,仅发育密西西比亚系,生物类群为冈瓦纳型.基默里型包括保山分区、腾冲分区、措勤-申扎分区、拉萨-察隅分区、那曲-比如分区、南羌塘分区,以及掸泰和南阿富汗-帕米尔等地区,也仅发育密西西比亚系,但生物群具有欧洲、华南、澳大利亚和北美混生型特征.特提斯型包括唐古拉山分区、可可西里-巴彦喀拉分区、昌都-横断山分区、铁克里克分区、西昆仑分区、喀喇昆仑分区、东昆仑-中秦岭分区和祁连分区,石炭系发育完整,生物群为暖水的特提斯型.冈瓦纳型和基默里型石炭系生物地层对比以牙形类为主,辅以腕足类和四射珊瑚;特提斯型密西西比亚系的生物地层以四射珊瑚和腕足类为主,宾夕法尼亚亚系以有孔虫(?)和牙形类为主,辅以四射珊瑚和腕足类.在石炭纪国际标准年代地层框架下,系统建立了青藏高原及其周边的岩石地层和生物地层划分和对比框架.将来应加强石炭纪同位素地质年代学、地球化学及古气候和古环境的研究.

关键词：青藏高原石炭纪岩石地层生物群地层对比

Evaluation of Social Environment Impact of Highway Construction Using Gray Matter-Element Information Entropy Model

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Journal of Environmental Science and Engineering 2011年第12期5卷 1688-1694页

作者： C.k. hu Changsha Vocational Technology School of Information Changsha 410116 China

Due to the importance of the social environment impact of highway construction project, an advanced evaluation is required to incorporate situations such as uncertainty, incompatibility and less information. This paper proposes a gray matter-element evaluation model based on the information entropy. The model is developed by combining both quantitative and qualitative methods, using probability theory to convert quantitative index to qualitative index, and the weight of those indexes were determined through synthesised integral weighting method, integrating matter-element theory, grey theory, and information theory. The model is then applied to evaluate the impact of the social environmental impact of highway construction project which will provide support for decision makers. Cheng-Yu highway and Shen-Da highway were selected for model application, and good results were achieved similar to the real situation.

关键词： Project evaluation social environment gray matter-element assessment.

Predicting the strut forces of the steel supporting structure of deep excavation considering various factors by machine learning methods

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Underground Space 2024年第5期18卷 114-129页

作者： Haibo hu Xunjian hu Xiaonan Gong Research Center of Coastal and Urban Geotechnical Engineering Zhejiang UniversityHangzhou 310058China

The application of steel strut force servo systems in deep excavation engineering is not widespread,and there is a notable scarcity of in-situ measured *** presents a significant research gap in the *** this,our study introduces a valuable dataset and application scenarios,serving as a reference point for future *** main objective of this study is to use machine learning(ML)methods for accurately predicting strut forces in steel supporting structures,a crucial aspect for the safety and stability of deep excavation *** employed five different ML methods:radial basis function neural network(RBFNN),back propagation neural network(BPNN),k-Nearest Neighbor(kNN),support vector machine(SVM),and random forest(RF),utilizing a dataset of 2208 measured *** points included one output parameter(strut forces)and seven input parameters(vertical position of strut,plane position of strut,time,temperature,unit weight,cohesion,and internal frictional angle).The effectiveness of these methods was assessed using root mean square error(RMSE),correlation coefficient(R),and mean absolute error(MAE).Our findings indicate that the BPNN method outperforms others,with RMSE,R,and MAE values of 72.1 kN,0.9931,and 57.4 kN,respectively,on the testing *** study underscores the potential of ML methods in precisely predicting strut forces in deep excavation engineering,contributing to enhanced safety measures and project planning.

关键词： Deep excavation Steel supporting structure Strut forces Machine learning Time Temperature