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A method for 3D simulation of internal gas effects on thermal-mechanical behaviors in nuclear fuel elements

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Nuclear Science and Techniques 2011年第3期22卷 185-192页

作者： jiang yijie CUI Yi HUO Yongzhong DING Shurong Department of Mechanics and Engineering Science Fudan University Shanghai 200433 China

A new method for three-dimensional simulation of the interaction between the gas and the solid around is *** effects of the gas on the thermal-mechanical behaviors within the surrounded solid are performed by replacing the internal gas with an equivalent solid in the modeling,which can make it convenient to simulate the thermal-mechanical coupling effects in the solid research objects with gases in *** applied thermal expansion coefficient,Young's modulus and Poisson's ratio of the equivalent solid material are derived.A series of tests have been conducted;and the proposed equivalent solid method to simulate the gas effects is validated.

关键词：热机械行为气体效应三维模拟核燃料元件仿真方法热膨胀系数相互作用耦合效应

A new method to prepare calcium oxalate films for marble protection

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Science China(Technological Sciences) 2023年第8期66卷 2237-2245页

作者： HE Lu jiang yijie MA WenTing LIU Yan YANG FuWei LU RuiCong WANG Lu ZHANG Kun CHEN XinNan GAO Xiang China-Central Asia“the Belt and Road”Joint Laboratory on Human and Environment Research Key Laboratory of Cultural Heritage Research and ConservationSchool of Culture HeritageNorthwest UniversityXi’an 710127China College of Chemistry and Materials Science Northwest UniversityXi’an 710069China

Artificial calcium oxalate films have been applied to protect sculptures,monuments,and buildings made of marble due to their potential protective ***,artificially prepared calcium oxalate films are usually loose,and easy to peel off in contrast to the natural *** this paper,a new method was developed for the preparation of a compact and cohesive calcium oxalate film,using ethylene glycol as an *** morphology,elemental composition,structure,and crystal phase of the film were analyzed by SEM,EDX,IR,and XRD,and the protective effects were investigated by acid resistance test,while its adhesion to the underlying marble by the Scotch tape *** porosity,water absorption,and color of treated marble were also *** results showed that a calcium oxalate film with a compact structure,good adhesion,and a protective effect against acid rain can be successfully obtained by including ethylene glycol as an *** the new preparation method,a better bond between the stone and the film is obtained which contributes to solving the spalling problem of the artificial calcium oxalate films.

关键词： marble calcium oxalate film ethylene glycol protection

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Comparison of nitrification inhibitors for mitigating cadmium accumulation in pakchoi and their associated microbial mechanisms

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第9期25卷 773-788页

作者： Wenxin DU Qingyang ZHU Xiangting JING Weijie HU Yao ZHUANG yijie jiang Chongwei JIN State Key Laboratory of Plant Environmental Resilience Zhejiang UniversityHangzhou 310058China

The use of nitrification inhibitors has been suggested as a strategy to decrease cadmium(Cd)accumulation in ***,the most efficient nitrification inhibitor for mitigating crop Cd accumulation remains to be elucidated,and whether and how changes in soil microbial structure are involved in this process also remains *** address these questions,this study applied three commercial nitrification inhibitors,namely,dicyandiamide(DCD),3,4-dimethylpyrazole phosphate(DMPP),and nitrapyrin(NP),to *** results showed that both DCD and DMPP(but not NP)could efficiently decrease Cd concentrations in pakchoi in urea-and ammonium-fertilized *** addition,among the three tested nitrification inhibitors,DMPP was the most efficient in decreasing the Cd concentration in *** nitrification inhibitors decreased pakchoi Cd concentrations by suppressing acidification-induced Cd availability and reshaping the soil microbial structure;the most effective nitrification inhibitor was *** oxidation generates the most protons during nitrification and is inhibited by nitrification *** in environmental factors and predatory bacterial abundance caused by the nitrification inhibitors changed the soil microbial structure and increased the potential participants in plant Cd *** summary,our study identified DMPP as the most efficient nitrification inhibitor for mitigating crop Cd contamination and observed that the soil microbial structural changes caused by the nitrification inhibitors contributed to decreasing Cd concentration in pakchoi.

关键词： Cadmium(Cd) Nitrification inhibitor Soil microbial structure Safe crop production

高职院校文化品牌建设的实践与思考——以广西职业技术学院为例

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职业技术教育 2019年第11期40卷 68-71页

作者：蒋贻杰广西职业技术学院南宁530000

高职院校文化品牌建设是提升高职院校文化内涵、回归职业教育本真、塑造自身软实力的重要途径。广西职业技术学院在实践中形成的以茶为核心的'境育—课育—师育—体育'四育共生的文化品牌建设成果,为当前高职院校文化品牌建设提供了一... 详细信息

高职院校文化品牌建设是提升高职院校文化内涵、回归职业教育本真、塑造自身软实力的重要途径。广西职业技术学院在实践中形成的以茶为核心的'境育—课育—师育—体育'四育共生的文化品牌建设成果,为当前高职院校文化品牌建设提供了一定的借鉴与参考。反思这一建设成果,高职院校文化品牌建设要突出价值性、延续性、整体性与创造性的统一。

关键词：高职院校文化品牌文化育人茶文化

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中国昆虫资源研究60年进展

植物保护学报 2022年第1期49卷 76-86页

作者：姜轶杰石志辉张杰朱芬雷朝亮华中农业大学植物科学技术学院昆虫资源利用与害虫可持续治理湖北省重点实验室武汉430070 华中农业大学昆虫资源研究所武汉430070

昆虫资源多样性丰富,具有较高的研究与开发利用价值。该文对1961年至今中国近60年昆虫资源的理论形成、发展阶段、研究重点和论文发表情况进行总结和分析,归纳昆虫本体利用、行为利用和产物利用的发展状况,并对昆虫基因组学和害虫防治... 详细信息

昆虫资源多样性丰富,具有较高的研究与开发利用价值。该文对1961年至今中国近60年昆虫资源的理论形成、发展阶段、研究重点和论文发表情况进行总结和分析,归纳昆虫本体利用、行为利用和产物利用的发展状况,并对昆虫基因组学和害虫防治等方面研究进展进行概述,根据昆虫多样性下降问题对未来昆虫资源发展进行展望,以期提高人们对昆虫资源的研究与保护意识。

关键词：昆虫资源文献计量分析发展阶段特色发展