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Plant vs. Animal Prototype for Designing Bio-inspired PEMFC Flow Fields: Corn Veins or Murray’s Law?

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Journal of Bionic Engineering 2022年第3期19卷 761-776页

作者： Wenxuan Fan Taotao Zhao Ke Jiang Lei Sun Saisai Jia Qianqian Wu guolong lu Zhenning Liu Key Laboratory of Bionic Engineering(Ministry of Education) College of Biological and Agricultural EngineeringJilin UniversityChangchun130022China

Designing bio-inspired flow fields holds great potential in improving the performance of Proton Exchange Membrane Fuel Cell(PEMFC).Two kinds of biological prototypes are widely used:plant prototype and animal prototype.It remains a question which one of these prototypes is more appropriate for the scenario of PEMFC.Here,a comparative study was conducted to compare bionic flow fields based on animal and plant prototypes.First,a Corn Leaf Vein Mathematical Model(CLMM)was established by extracting structural parameters from corn leaves of two growth stages.Then the obtained CLMM and well-known Murray’s law were employed to design bionic flow fields corresponding to the plant and animal prototypes,respectively,which have been subsequently compared by numerical investigations.The results demonstrate that the flow field guided by Murray’s law outperforms the counterpart based on the structural parameters of CLMM in terms of PEMFC net output power,mass transport,water management and pressure drop,suggesting that animal circulation system is more suitable to the bionic flow field design of PEMFC than plant leaf veins.The work may also offer valuable insights into the design of other flow fields related to electrochemical energy conversion.

关键词： Proton exchange membrane fuel cell Flow field Biological prototypes Corn leaf vein Murray’s law Comparative study

Preparation of biomimetic hydrophobic coatings on AZ91D magnesium alloy surface

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Science China(Technological Sciences) 2010年第11期53卷 2972-2975页

作者： LIU Yan LI Liang lu guolong YU SiRong Key Laboratory for Engineering Bionics The Ministry of EducationJilin UniversityChangchun 130022China College of Materials Science and Engineering Jilin UniversityChangchun 130022China

The hydrophobic coating has been a promising technology for improving surface performance. The surface performance of magnesium alloy has been limited in application. Furthermore, the hydrophobic of magnesium alloy is rarely investigated because magnesium alloy is an active metal alloy. In this paper, inspired by microstructure character of typical plant leaf surface such as lotus, the biomimetic hydrophobic coatings on AZ91D magnesium alloy surface were prepared by means of wet-chemical combining electroless. The samples were immersed into AgNO3 solution in wet-chemical method firstly. Then, biomimetic hydrophobic coatings were prepared by electroless after wet-method pretreatment. The microstructure was observed by SEM and the contact angles were measured by contact angle tester. The results indicated that the biomimetic hydrophobic coatings with uniform crystalline and dense structure could be obtained on AZ91D magnesium alloy surface. The results of contact angle revealed that the biomimetic nano-composite coatings were hydrophobic. The wet-chemical method treatment on the AZ91D magnesium alloy substrate provided a rough microstructure, thus improving adhesion of the coating and the substrate.

关键词： biomimetic hydrophobic coatings magnesium alloy

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《人间世》——介入社会的自由尺度

伦理学术

伦理学术 2023年第2期 63-87页

作者：卢国龙中国社会科学院世界宗教研究所

一个自然人如何介入社会,是《人间世》所要思议的问题。“间”即介入。自然人没有预设的立场,但有本我意识,所以介入社会时,既不丧失本我之自然,也不扰乱他人之自然。但社会是一个预设的环境,在这个环境中守持本我之自然,需要“心斋”修... 详细信息

一个自然人如何介入社会,是《人间世》所要思议的问题。“间”即介入。自然人没有预设的立场,但有本我意识,所以介入社会时,既不丧失本我之自然,也不扰乱他人之自然。但社会是一个预设的环境,在这个环境中守持本我之自然,需要“心斋”修养,其中就蕴含着作为另类文明的自由社会的生成机制。本文寻绎其思想理路,且略引儒家、法家为参照。

关键词：本我意识介入社会另类文明

Theoretical probe into universal tetrad effect for complexation discrepancy between lanthanide elements and organophosphoric extractant diethyl phosphoric acid

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Journal of Rare Earths 2024年第6期42卷 1142-1148,I0006页

作者： Haifeng Zheng Yanling Li Xuyi Zhang Jinglu Han Songsong Li guolong Wu Qingshi Liu Xiaojuan Liu Wuping Liao State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China University of Science and Technology of China Hefei230026China School of Chemistry and Chemical Engineering Nanchang UniversityNanchang330031China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou341000China

The deep understanding of 4f-correlated electron motion behavior is experimentally limited due to similar physicochemical properties of rare earth elements(REEs).While the solvent extraction behavior originating from the continuous occupation of 4f electrons along the lanthanide family provides a particular platform to probe the 4f electrons motion behavior and its correlations to their versatile functions.Herein,the complexation between REEs and the prototypical extractant of diethyl phosphoric acid(DEP)was substantially studied based on quantum mechanical calculation.The results firstly show that the average bond lengths between Ln and six coordinated oxygen atoms are consistent with lanthanide contraction phenomenon,and gadolinium break effect is also obviously observed.Secondly,the"tetrad effect"is figured out based on the subtle discrepancy of 4f electrons occupation,namely La-Nd,Sm-Eu,Gd-Dy and Ho-lu.Specifically,the main composition is 4f5d6p for La-Nd,while the discrepancy is due to the increasing electrons in the 5d shell,while it is 4f5d for Pm-Eu.For Gd-Dy,their 4f orbitals accept little electrons and the donating electrons flow into 6s5d subshells due to the half-filled stability and the enhancement of shielding effect.The electrons donate into 5d6p subshells due to multiply electrons occupation of 4f orbitals for Ho-lu.These detailed analyses obviously clarify the"tetrad effect"along the lanthanide family due to the different variation of 4f orbital occupation.It is expected that these microscopic understandings provide important guidance for the separation of REEs and the design of new extractants.

关键词： Theoretical calculation Rare earths 4f electron Tetrad effect Gadolinium break

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“礼失求诸野”义疏

世界宗教研究 2008年第2期 1-8页

作者：卢国龙中国社会科学院世界宗教研究所

本文认为'礼失求诸野'是儒家的一项文化开放主张,通过历史疏证,可知其适用范围很广,并由此形成中国文化发展与整合互动的机制,即以民间文化丰富经典文化,以四夷或域外文化充实中国文化,反之,经典文化则对民间和四夷文化进行整合,从而既... 详细信息

本文认为'礼失求诸野'是儒家的一项文化开放主张,通过历史疏证,可知其适用范围很广,并由此形成中国文化发展与整合互动的机制,即以民间文化丰富经典文化,以四夷或域外文化充实中国文化,反之,经典文化则对民间和四夷文化进行整合,从而既保持中国文化的主体性,又蕴含着生生不息的发展张力。

关键词：礼野儒家文化机制

兴蒙造山带中与古亚洲洋演化有关的成矿系统初步研究

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矿床地质 2022年第3期41卷 449-468页

作者：朱永峰张云迪蒋久阳陆国隆北京大学地球与空间科学学院造山带与地壳演化重点实验室北京100871

古亚洲洋演化过程中在兴蒙造山带中形成了大量金属矿床。早古生代早期,古亚洲洋向北俯冲,形成了奥陶纪多宝山-铜山斑岩Cu-Au成矿系统;早古生代晚期,古亚洲洋向南俯冲并形成了晚奥陶世白乃庙Cu-Mo-Au成矿系统和志留纪别鲁乌图海底喷流块... 详细信息

古亚洲洋演化过程中在兴蒙造山带中形成了大量金属矿床。早古生代早期,古亚洲洋向北俯冲,形成了奥陶纪多宝山-铜山斑岩Cu-Au成矿系统;早古生代晚期,古亚洲洋向南俯冲并形成了晚奥陶世白乃庙Cu-Mo-Au成矿系统和志留纪别鲁乌图海底喷流块状硫化物成矿系统。古亚洲洋在晚古生代早期向北俯冲,形成了晚泥盆世欧玉陶勒盖Cu-Au成矿系统。基本同时,古亚洲洋向南俯冲,形成了晚泥盆世哈达门沟Mo成矿系统。早石炭世,研究区构造体制从岛弧环境逐渐转变为陆内伸展环境,并在此过程中形成了豆荚状铬铁矿成矿系统和小型斑岩Mo-Cu成矿系统。

关键词：地质学古亚洲洋兴蒙造山带斑岩矿床多金属矿床成矿系统

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司马季主的人格风范与学术传承

中国道教 2010年第2期 16-24页

作者：卢国龙中国社会科学院世界宗教研究所

历史上,与委羽山相关联的知名人物很多,如果罗列出来,那一定是一份很长的名单。这些人物都有其闪光之处,若论与委羽山渊源之深、受后人钦崇之甚,大概要首推司马季主。他身上似乎具有一种很特殊的魅力,以至精神上向来以高标自持的司马迁... 详细信息

历史上,与委羽山相关联的知名人物很多,如果罗列出来,那一定是一份很长的名单。这些人物都有其闪光之处,若论与委羽山渊源之深、受后人钦崇之甚,大概要首推司马季主。他身上似乎具有一种很特殊的魅力,以至精神上向来以高标自持的司马迁、诸葛亮、道教上清派宗师杨羲、许穆等,都对他推崇备至。

关键词：学术传承人格风范马季知名人物司马迁诸葛亮上清派精神

Thoughts on a Cultural Strategy for the Problem of Religion in China Today

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Social Sciences in China 2007年第2期 180-182页

作者： lu guolong, Senior research fellow, Institute of Religion, the Chinese Academy of Social Sciences Chen Si

That religion has become an important parameter for delineating the map of political strategy is obvious in contemporary international politics. Face to face with the cultural strategic significance religion already

关键词： Thoughts on a Cultural Strategy for the Problem of Religion in China Today

新工科背景下“现代材料测试技术”课程的教学改革与创新

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当代教育理论与实践 2022年第4期14卷 35-41页

作者：卢国龙杨微王蜜刘镇宁吉林大学工程仿生教育部重点实验室吉林长春130022 长春师范大学工程学院吉林长春130032

在新工科背景下,结合材料类专业本科生“现代材料测试技术”课程特点,对目前课程教学中存在的不足进行阐述。针对如何培养学生理论应用和实践创新能力,提出融入多学科交融教学模式与思政元素、改革教学方法、重构教材内容、构建多元化... 详细信息

在新工科背景下,结合材料类专业本科生“现代材料测试技术”课程特点,对目前课程教学中存在的不足进行阐述。针对如何培养学生理论应用和实践创新能力,提出融入多学科交融教学模式与思政元素、改革教学方法、重构教材内容、构建多元化考核评价方式的改革方案。该改革方案对推进新工科建设,培养适应新时代要求的高层次创新型人才有着至关重要的意义。

关键词：新工科现代材料测试技术多学科交融教学模式教学改革