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A review on liquid sloshing hydrodynamics

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Journal of Hydrodynamics 2021年第6期33卷 1089-1104页

作者： Jin-hai Zheng Mi-An Xue peng dou Yu-meng He Key Laboratory of Coastal Disaster and Protection of Ministry of Education Hohai UniversityNanjing 210024China College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210024China

Liquid sloshing in tanks is a very complex nonlinear free surface fluid flow problem,which must be considered in most of the marine engineering problems such as naval architecture,offshore engineering and so *** liquid sloshing in large containers can damage the tank structure due to the direct liquid impacting *** also affects the capsizing process of the liquid cargo *** works on mitigating sloshing by using all kinds of the baffles were thus followed with *** layers with thinner thickness were shown to reduce the sloshing load of water in *** sloshing characteristics in tanks with different sizes were different,therefore,scaling effect of sloshing should also be *** in a tank can also be used as tuned liquid dampers(TLDs)to dampen wind,wave and flow-induced motions of floating or fixed marine *** paper present an overview on recent advances of liquid sloshing hydrodynamics including sloshing mitigation by using anti-sloshing baffle,layered fluids sloshing,scaling effect of sloshing and TLDs.

关键词： Sloshing mitigation layered fluids sloshing scaling effect of sloshing tuned liquid damper

Electrochemical preparation of the Fe-Ni36 Invar alloy from a mixed oxides precursor in molten carbonates

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International Journal of Minerals,Metallurgy and Materials 2020年第12期27卷 1695-1702页

作者： Yan-peng dou Di-yong Tang Hua-yi Yin Di-hua Wang School of Resource and Environmental Sciences Wuhan UniversityWuhan 430072China

The Fe-Ni36 alloy was prepared via the one-step electrolysis of a mixed oxides precursor in a molten Na2CO3-K2CO3 eutectic melt at 750℃,where porous Fe_(2)O_(3)-NiO pellets served as the cathode and the Ni10 Cu11 Fe alloy was an inert *** the electrolysis,Ni O was preferentially electro-reduced to Ni,then Fe_(2)O_(3)was reduced and simultaneously alloyed with nickel to form the Fe-Ni36 *** cell voltages were applied to optimize the electrolytic conditions,and a relatively low energy consumption of 2.48 k W·h·kg^(-1) for production of Fe Ni36 alloy was achieved under 1.9 V with a high current efficiency of 94.6%.The particle size of the alloy was found to be much smaller than that of the individual *** process provides a low-carbon technology for preparing the Fe-Ni36 alloy via molten carbonates electrolysis.

关键词： molten carbonates cyclic voltammetry electro-reduction inert anode Invar36 alloy

Conductance switching of a phthalocyanine molecule on an insulating surface

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Frontiers of physics 2017年第4期12卷 143-146页

作者： Kun peng dou Chao-Cheng Kaun Research Center for Applied Sciences Academia Sinica Taipei 11529 Department of Physics National Tsing-Hua University Hsinchu 30013

We study the electron transport through the double-barrier junction consmte^l o~ tne pn^nalocyamn~ molecule adsorbed on a NaCl bilayer on a metal substrate and the STM tip from first principles. The hydrogen tautomerization reaction happened in the molecule changes the spatial extensions of the molecular 7c orbitals under the tip, leading to junction conductance switching. Shifting the molecule to locate on different ions also varies the conductance. Tile transport channels of the tautomers on different adsorbed sites are identified.

关键词： first-principles calculations double-barrier junction NaC1 bilayer tautomerization,molecular electronics

Vertical Short Crack Initiation in Medium Carbon Bainitic Steel Under Mild Tractive Rolling Contact

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Journal of Iron and Steel Research International 2008年第3期15卷 37-41页

作者： dou peng SUO Shuang-fu BAI Bing-zhe YANG Zhi-gang LI You-guo Department of Precision Instruments and Mechanology Tsinghua University Beijing 100084 China Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

To improve the current grinding procedure of the back-up roll of CVC hot rolling mills so that the back-up roll service life can be extended, the crack initiation and propagation behavior of medium carbon bainitic back-up roll steel was investigated, a kind of asperity-scale, surface originated vertical short cracks occurred at 5 × 10^2 -1 × 10^4 cycles. Theoretical analysis indicated that the maximum tensile stress occurring at the back edge of the contact of asperities keeps at above 1 347. 97 MPa, and ratcheting and cyclic plastic deformation take place at such sites within 1 × 10^4 cycles. The early initiation of the vertical short cracks is caused by the asperity contact. According to the crack initiation mechanism, short crack behavior and preventive grinding strategy, steel consumption can be reduced considerably by decreasing the surface roughness and removing the asperity influenced surface thin layer at about 70%-80% of the surface distress life.

关键词： rolling contact fatigue medium carbon bainitie steel vertical short crack asperity rateheting

Model for Unidirectional Movement of Axonemal and Cytoplasmic Dynein Molecules

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Acta Biochimica et Biophysica Sinica 2006年第10期38卷 711-724页

作者： Ping XIE* Shuo-Xing dou peng-Ye WANG Laboratory of Soft Matter Physics,Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China Laboratory of Soft Matter Physics Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of SciencesBeijing 100080 China

A model for the unidirectional movement of dynein is presented based on the structuralobservations and biochemical experimental results *** this model,the binding affinity of dynein formicrotubule (MT) is independent of its nucleotide state and the change between strong and weak MT-bindingis determined naturally by the variation of relative orientation between the stalk and MT,as the stalk rotatesfollowing nucleotide-state *** the enigmatic communication from the adenosine triphosphate(ATP)-binding site in the globular domain to the far MT-binding site in the tip of the stalk,which is aprerequisite in conventional models,is not *** the present model,the previous experimentalresults such as the effect of ATP and adenosine diphosphate (ADP) bindings on dissociation of dynein fromMT,the movement of single-headed axonemal dyneins at saturating ATP concentration,the load dependenceof step-size for the movement of two-headed cytoplasmic dyneins and the dependence of stall force on ATPconcentration can be well explained.

关键词： dynein mechanism mechanochemistry molecular motor

On Sustainable Tourism of China's World-class Cul-tural and Natural Heritage Sites

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Social Sciences in China 2003年第1期24卷 160-168页

作者： Wei Xiao’an, dou Qun peng Decheng

世界级文化与自然遗产在中国旅游业发展中发挥了多方面的作用,是中国旅游经济起飞和旅游品牌塑造的最重要的资源基础。同时,发展旅游又是有效利用遗产资源、进一步挖掘遗产资源的内在价值、使遗产文化得以更为有效传播的重要途径。并且... 详细信息

世界级文化与自然遗产在中国旅游业发展中发挥了多方面的作用,是中国旅游经济起飞和旅游品牌塑造的最重要的资源基础。同时,发展旅游又是有效利用遗产资源、进一步挖掘遗产资源的内在价值、使遗产文化得以更为有效传播的重要途径。并且,发展旅游所获得的经济回报可使遗产保护获得重要的资金支持。当前,在中国遗产资源的开发与经营中,仍存在一系列突出的制度和认识问题。解决这些问题的根本出路在于根据中国现时国情,建立遗产资源的可持续旅游经营模式,从而真正实现遗产保护和发展旅游产业“双赢”的目标。

关键词：遗产资源发展旅游旅游业发展遗产保护世界级自然遗产内在价值根本出路旅游品牌遗产文化

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论周瑄璞的生命力书写

小说评论 2020年第5期 201-207页

作者：窦鹏西北大学陕西省图书馆

作为中国当代"70后女作家"的典型代表,周瑄璞自由穿行于都市生活、女性题材写作以及城乡题材的宏大叙事之间,她的《人丁》《夏日残梦》《疑似爱情》《多湾》《日近长安远》等长篇小说,以及《失语》《圆拐角》《曼琴的四月》《故障》《... 详细信息

作为中国当代"70后女作家"的典型代表,周瑄璞自由穿行于都市生活、女性题材写作以及城乡题材的宏大叙事之间,她的《人丁》《夏日残梦》《疑似爱情》《多湾》《日近长安远》等长篇小说,以及《失语》《圆拐角》《曼琴的四月》《故障》《抵达》等中短篇小说,无不呈现出作家关注女性生命体验,不断探索人性及生活哲理的主体意识。周瑄璞的小说创作洋溢着蓬勃向上的生命力,充满活色生香的生活气息,具有鲜明的个人化色彩,是中国当代文学创作领域值得引起重视的现象和风景。

关键词：当代文学创作日近长安远周瑄璞女性题材生活哲理宏大叙事女性生命体验活色生香

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中国货币政策利率传导状态的实证研究

经济体制改革 2019年第3期 135-142页

作者：窦鹏鹏中国社会科学院研究生院

本文基于1998年1月~2018年9月的月度数据,使用VAR模型研究了目前中国利率传导的状态,发现相对于货币供应,市场利率对宏观经济变量的解释力更强,利率已经是中国货币政策传导的重要渠道。同时,利率传导的敏感度与速度在货币-证券市场之间... 详细信息

本文基于1998年1月~2018年9月的月度数据,使用VAR模型研究了目前中国利率传导的状态,发现相对于货币供应,市场利率对宏观经济变量的解释力更强,利率已经是中国货币政策传导的重要渠道。同时,利率传导的敏感度与速度在货币-证券市场之间、证券-信贷市场之间都比较高,信贷市场的利率对货币市场的利率有单向影响;但是利率通过信贷市场向消费的传导存在阻滞,向产出和投资的传导效率在不断提高。

关键词：货币政策利率传导中介目标 VAR模型

基于TMS320F2812汽车动力控制系统的实现

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机械设计与制造 2008年第6期 93-95页

作者：窦鹏广西工学院电子信息与控制工程系柳州545006

首先提出了汽车动力综合控制系统的总体设计方案,给出了该控制系统的组成模块和硬件需求分析。采用TI公司的TMS320F2812作为核心CPU,实现了对控制信号、转换电路、驱动电路等的处理。通讯电路采用CAN总线的实现方式,实现了可靠、实时、... 详细信息

首先提出了汽车动力综合控制系统的总体设计方案,给出了该控制系统的组成模块和硬件需求分析。采用TI公司的TMS320F2812作为核心CPU,实现了对控制信号、转换电路、驱动电路等的处理。通讯电路采用CAN总线的实现方式,实现了可靠、实时、灵活的通讯要求。

关键词： TMS320F2812 控制系统 CAN总线硬件模块驱动电路