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Thermoelastic Structural Topology Optimization Based on Moving Morphable Components Framework

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Computer Modeling in Engineering & Sciences 2021年第9期128卷 1179-1196页

作者： Jun yan Qi Xu Zhirui Fan Zunyi Duan hongze Du Dongling Geng Department of EngineeringMechanics StateKey Laboratory of StructuralAnalysis for Industrial EquipmentInternational Research Center for Computational MechanicsDalian University of TechnologyDalian116024China Institute of Structural Health Monitoring and Control School of MechanicsCivil Engineering&ArchitectureNorthwestern Polytechnical UniversityXi’an710072China Ningbo Research Institute of Dalian University of Technology Ningbo315016China

This study investigates structural topology optimization of thermoelastic structures considering two kinds of objectives ofminimumstructural compliance and elastic strain energy with a specified available volume constraint.To explicitly express the configuration evolution in the structural topology optimization under combination of mechanical and thermal load conditions,the moving morphable components(MMC)framework is adopted.Based on the characteristics of the MMC framework,the number of design variables can be reduced substantially.Corresponding optimization formulation in the MMC topology optimization framework and numerical solution procedures are developed for several numerical examples.Different optimization results are obtained with structural compliance and elastic strain energy as objectives,respectively,for thermoelastic problems.The effectiveness of the proposed optimization formulation is validated by the numerical examples.It is revealed that for the optimization design of the thermoelastic structural strength,the objective function with the minimum structural strain energy can achieve a better performance than that from structural compliance design.

关键词： Thermoelastic structure topology optimization moving morphable components minimum structural compliance minimum strain energy

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黄连温胆汤加减治疗慢性肾衰竭的临床效果

中外医疗 2024年第6期43卷 192-194,198页

作者：陶杰徐严朱妍淮安市洪泽区中医院肾病科江苏淮安223100

目的研究黄连温胆汤加减治疗慢性肾衰竭的临床效果。方法方便选取2021年1月—2023年9月淮安市洪泽区中医院收治的76例慢性肾衰竭患者为研究对象,以随机数表法分为对照组和观察组,各38例,分别采取常规治疗和联合黄连温胆汤加减治疗方式,... 详细信息

目的研究黄连温胆汤加减治疗慢性肾衰竭的临床效果。方法方便选取2021年1月—2023年9月淮安市洪泽区中医院收治的76例慢性肾衰竭患者为研究对象,以随机数表法分为对照组和观察组,各38例,分别采取常规治疗和联合黄连温胆汤加减治疗方式,分析两组中医症状积分、肾功能指标、治疗总有效率。结果治疗后,观察组神疲乏力、食少纳呆、腰膝酸软、肢体麻木的中医症状积分分别为(2.42±0.41)分、(0.96±0.24)分、(1.02±0.27)分、(1.87±0.43)分,均低于对照组,差异有统计学意义(t=8.917、10.835、12.201、5.062,P均<0.05);治疗后,观察组24 h尿蛋白(0.88±0.14)mg/L、血肌酐(Serum Creatinine,SCr)(112.02±1.56)μmol/L、尿素氮(Blood Urea Nitrogen,BUN)水平(4.02±1.45)mmol/L,均优于对照组,差异有统计学意义(t=6.687、5.778、3.985,P均<0.05);观察组治疗总有效率(97.37%)高于对照组(78.95%),差异有统计学意义(P<0.05)。结论黄连温胆汤加减应用在慢性肾衰竭患者治疗过程中,取得显著治疗效果。

关键词：黄连温胆汤慢性肾衰竭临床效果

Self-Assembly of Luminescent Twisted Fibers Based on Achiral Quinacridone Derivatives

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Nano Research 2009年第6期2卷 493-499页

作者： Yunfeng Zhao yan Fan Xiaoyue Mu hongze Gao Jia Wang Jingying Zhang Wensheng yang Lifeng Chi Yue Wang State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Physikalisches Institut and Center for Nanotechnology(CeNTech) Universität MünsterMünster 48149Germany

It is a great challenge to spontaneously assemble achiral molecules into twisted nanostructures in the absence of chiral substances.Here we show that two achiral centrosymmetric quinacridone(QA)derivatives,N,N’-di(n-hexyl)-1,3,8,10-tetramethylquinacridone(C6TMQA)and N,N’-di(n-decyl)-1,3,8,10-tetramethylquinac ridone(C10TMQA),can be employed as building blocks to fabricate well-defi ned twisted nanostructures by controlling the solvent composition and concentration.Bowknot-like bundles with twisted fiber arms were prepared from C6TMQA,whilst uniform twisted fibers were generated from C10TMQA in ethanol/THF solution.Spectroscopic characterization and molecular simulation calculations revealed that the introduction of ethanol into the solution could induce a staggered aggregation of C6TMQA(or C10TMQA)molecules and the formation of twisted nanostructures.Such twisted materials generated from achiral organic functional molecules may be valuable in the design and fabrication of new materials for optoelectronic applications.

关键词： Twisted fi ber quinacridone self-assembly luminescence

Interconnected graphene/polymer micro-tube piping composites for liquid sensing

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Nano Research 2014年第6期7卷 869-876页

作者： Tingting yang hongze Zhang yan Wang Xiao Li Kunlin Wang Jinquan Wei Dehai Wu Zhihong Li Hongwei Zhu School of Materials Science and Engineering State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Materials Processing Technology of MOE Tsinghua University 8eijing 100084 China Center for Nano and Micro Mechanics Tsinghua University Beijing 100084 China National Key Laboratory of Science and Technology on Micro/Nano Fabrication Institute of Microelectronics Peking University Beijing 100871 China Department of Physics and Nanoscience and Nanotechnology Laboratory Institute for Advanced Study Nanchang University Nanchang 330031 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China

Detection and analysis of volatile organic compounds (VOCs) as pollutants in the atmosphere and liquids are of great significance because of the detrimental effects of VOCs. A polymer-coated graphene micro-tube piping (GMP) structure with a cross-linked and interconnected channel network was synthesized for liquid sensing. By virtue of their unique cross-linked and interconnected channel network configuration, polycrystalline conformation, and the support of a polymer layer, the resistivity of the 3D hollow micro-tubing GMPs was sensitive to strain, ensuring high sensitivity of the liquid sensor (R/R 0 of ∼4 × 103% for pure acetone and R/R 0 of ∼105% for 0.01 wt.% acetone solution). Due to the capillary force, the interfaces of the 3D structures can speed up the penetration of solvents into the polymer, thus promote distinct selectivity within seconds and significantly decrease the response time. Owing to their good selectivity, high sensitivity, rapid response and flexibility, and the ease of use of the sensors and the simplicity of the fabrication processes, the GMP/polymer composites should be a good candidate for liquid sensing.

关键词：聚合物复合材料液体传感器检测微管连接石墨挥发性有机化合物复合管

A Teosinte-derived Allele of a MYB Transcription Repressor Confers Multiple Disease Resistance in Maize.

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Molecular Plant 2021年第11期14卷 1846-1863页

作者： hongze Wang Jiabao Hou Pei Ye Long Hu Junshi Huang Zhikang Dai Bao Zhang Sha Dai Jiamin Que Haoxuan Min Gengshen Chen yanbo Wang Min Jiang yan Liang Lin Li Xuecai Zhang Zhibing Lai National Key Laboratory of Crop Genetic Improvement WuhanChina Liaoning Academy of Agricultural Sciences ShenyangChina International Maize and Wheat Improvement Center(CIMMYT) EI BatanTexcocoMexico

Natural alleles controlling multiple disease resistances (MDR) are valuable for crop breeding. However, only one MDR gene have been cloned in maize, and molecular mechanisms of MDR are not clear. By map-based cloning, we have cloned a teosinte-derived allele of a resistance gene, Mexicana lesion mimic 1 (ZmMM1), which has a lesion mimic phenotype and confers resistance to northern leaf blight (NLB), gray leaf spot (GLS) and southern corn rust (SCR). Strong MDR conferred by the teosinte allele is linked with the polymorphisms in the 3' untranslated region of the ZmMM1 gene that cause increased accumulation of ZmMM1 protein. ZmMM1 acts as a transcription repressor and negatively regulates transcription of specific target genes including ZmMM1-target gene 3 (ZmMT3), which functions as a negative regulator of plant immunity and associated cell death. The successful isolation of the ZmMM1 resistance gene will help not only in developing broad-spectrum and durable disease resistance but also in understanding the molecular mechanisms underlying MDR.

关键词： Multiple disease resistance ZmMM1 lesion mimic maize teosinte

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铜锈环棱螺形态性状对体质量的影响分析

水产科学 2024年第1期43卷 136-143页

作者：于明滕建张冲赵燕李娴季相山陈红菊山东农业大学动物科技学院山东泰安271018 山东省淡水渔业研究院山东济南250117

为探究铜锈环棱螺不同群体主要形态性状间的相关性及影响其体质量的主要因素,随机选取微山湖、东平湖、骆马湖、洪泽湖、长江江都区段和滇池的野生铜锈环棱螺,测量其壳高、壳宽、壳厚、壳口长、壳口宽及体质量,采用相关分析与通径分析方... 详细信息

为探究铜锈环棱螺不同群体主要形态性状间的相关性及影响其体质量的主要因素,随机选取微山湖、东平湖、骆马湖、洪泽湖、长江江都区段和滇池的野生铜锈环棱螺,测量其壳高、壳宽、壳厚、壳口长、壳口宽及体质量,采用相关分析与通径分析方法,并建立体质量的最优多元回归方程。试验结果显示,壳厚与体质量相关性不显著,壳高、壳宽、壳口宽和壳口长均与体质量相关性极显著。6个群体的决定系数总和分别为0.916、0.927、0.794、0.886、0.810和0.783,表明已分析出影响体质量的大部分形态性状。铜锈环棱螺体质量性状的主要影响因素在6个群体中并不相同,其中壳高或壳宽对体质量的影响作用比较大,是铜锈环棱螺体质量的主要影响因素。经多元回归方差分析和偏回归系数显著性检验,偏回归系数极显著(P<0.01)。本试验结果可为铜锈环棱螺的品种选育提供参考依据。

关键词：铜锈环棱螺形态性状体质量相关性分析通径分析

The Pollution Caused by Protection: The Unintended Consequences of the Local Governance of the Urban Drinking Water Source Protection in Tianjin, China

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Chinese Journal of Urban and Environmental Studies 2015年第3期03卷 38-57页

作者： TAN hongze LUO Jing ORDERUD Geir Inge ZHENG yan PAN Jiahua Department of Public Policy City University of Hong Kong Norwegian Institute for Urban and Regional Research Institute for Urban and Environmental Studies Chinese Academy of Social Sciences Institute of Chinese Borderland Studies Chinese Academy of Social Sciences

This paper examines how the hierarchical way of governing erodes and distorts the function of environmental policies by analyzing the unintended consequences of the governance of the urban drinking water source protection in Tianjin, a mega-city in China, as a case study. Since the1990s, Tianjin Municipal Government and Jixian Government(China) have setup a series of local measures for environmental governance to protect Yuqiao Reservoir, which is the water source of Tianjin and its surroundings. In general, the measures fall into three categories: water management, residence management, and the waste management. The governing principle is “no use, no pollution”. However, according to the field study, unintended consequences come along:some new kinds of pollution, from both household and production, occur in this area as a result of the implementation of these measures. Through the combination of functional analysis and the unintended consequences approach, three responsible factors have been found: Firstly, the absence of local residents in the whole decision-making process leads to distrust of the government, especially at the grass-roots level. Secondly, the “no use, no pollution” logic vastly reduces the reservoir’s utility and significance to the local residents, which leads to “no use, no protection”. Thirdly, the collapse of the traditional rules of mutual supervision also contributes to the deterioration. In conclusion, the typically hierarchical way of governing in this area leads to inevitable unintended consequences. This paper starts by summarizing relevant literature on local protective governance of the environment, especially in China, focusing on the consequences and their causes, in relation to research done in the area of unintended consequences of purposive social action. Then, following the empirical objects and the data collection methods,we present the case study in Yuqiao reserve, Tianjin, China, and analyze the unintended consequences. Moving to the result, the three reasons for the occurr

关键词： Urban drinking water source local environmental governance unintended consequences hierarchical governing Yuqiao Reservoir (Tianjin, China)

箱形基础在上下部共同作用下整体受力的极限分析

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土木工程学报 2006年第8期39卷 107-112页

作者：严平包红泽龚晓南浙江大学浙江杭州310027

提出箱形基础在上下部共同作用下整体受力极限分析方法,并与实际工程实测结果对照验证其合理性与可靠性。将上部结构与箱基、地基视为整体,借助于上下部同步进入极限状态的虚功率方程,从极限分析的角度对箱基在上下部共同作用下的整体... 详细信息

提出箱形基础在上下部共同作用下整体受力极限分析方法,并与实际工程实测结果对照验证其合理性与可靠性。将上部结构与箱基、地基视为整体,借助于上下部同步进入极限状态的虚功率方程,从极限分析的角度对箱基在上下部共同作用下的整体受力进行求解。根据十字机动破坏模型和双抛物线基反力破坏模式,求出相应箱基整体受力上限解。箱基整体进入极限受弯状态时,视上部结构为框架体系,计算上部结构抗弯刚度对箱基整体受力解约束效应分析。选取两个具有较完整实测结果的箱形基础工程按以上方法进行极限分析,并与实测对比。结果显示,与现行“箱筏基规范”考虑上部效应法相比,该极限分析方法计算结果更接近实测。同时,上下部共同作用整体受力极限分析方法更易于手算和电算编程,并可用于各种基反力模式。

关键词：箱形基础上下部作用极限分析

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苏北灌溉总渠灌区土壤砷污染及调查研究

污染防治技术 2011年第4期24卷 13-15页

作者：严妍洪泽县环境监测站江苏洪泽223100

在对苏北灌溉总渠沿线灌区土壤采样分析的基础上,评价该灌区砷的污染状况,探讨了土壤中As的含量、分布、成因及其与人类活动的关系。结果表明,长期利用污水灌溉,导致砷在灌区耕层产生累积,土壤受到一定程度的污染,应当引起关注。

关键词：灌区土壤砷污染调查