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Progress and challenges in dicarboxylation with CO2

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National Science Open 2023年第2期2卷 97-132页

作者： Chuan-Kun Ran Han-Zhi Xiao Li-Li Liao Tao ju Wei Zhang Da-Gang Yu Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University School of Chemistry and Chemical Engineering Chongqing University College of Chemistry and Chemical Engineering Yangzhou University

Dicarboxylic acids, which are appealing structural motifs in organic synthesis and exist widely in bioactive compounds, have been widely used as important monomers in the polymer industry to construct valuable materials. The dicarboxylation with CO2provides a convenient and potent way to furnish value-added dicarboxylic acids via the chemical fixation of two CO2molecules. Beyond any doubt, the development of dicarboxylation, especially the dicarboxylation of bulk chemicals, might represent a promising prospect in CO2capture and utilization(CCU). In this review, we critically summarized and comprehensively reviewed the advances made in the past decades in dicarboxylation with CO2under electro-, photo-and transition metal-mediated/catalytic systems. Moreover, the advantages and limitations of such dicarboxylation reactions are pointed out to unravel further development for future scientific and industrial advances in dicarboxylation with CO2to synthesize dicarboxylic acids in high selectivity and efficiency.

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Simulation and Structural Design of AMT Switch Valve’s Coil

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Simulation and Structural Design of AMT Switch Valve’s Coil

2014中国汽车工程学会年会

作者： Lu Lingya Wang Jihua Fan Rong ju Yusheng Zhang Yongming Wuxi Fuel Injection Equipment Research Institute

The effects of the position relationship between work air gap and coil,the coil wire diameter and the coil turns on the electromagnetic characteristics are analyzed by using the software Ansoft *** coil parameters are... 详细信息

ISBN: (纸本)9783662450420

关键词： coil of AMT switch valve Maxwell structural design

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台风对舟山海域上升流和叶绿素分布的影响

厦门大学学报（自然科学版） 2020年第S1期59卷 24-31页

作者：杨伟黄菊于潭上海海洋大学海洋科学学院上海201306 上海海洋大学海洋生态与环境学院上海201306 华东师范大学河口海岸学国家重点实验室上海200241

基于2015年7月和2016年7月对舟山海域的调查数据,分析该海域温度、盐度分布状况特征,探讨了该区域上升流及叶绿素的分布情况,研究了上升流生成的物理机制.结果表明:该海域2015年7月和2016年7月上升流所在区域海表温度较周围海域低,且201... 详细信息

基于2015年7月和2016年7月对舟山海域的调查数据,分析该海域温度、盐度分布状况特征,探讨了该区域上升流及叶绿素的分布情况,研究了上升流生成的物理机制.结果表明:该海域2015年7月和2016年7月上升流所在区域海表温度较周围海域低,且2016年7月海水表层与底层温度之差普遍在4℃以上,海水层化程度较2015年同期海域高.受台风过境的影响,2015年7月海表温度较低,且上升流的强度较2016年同期强,台风对上升流具有加强作用.台风过境区域的海表叶绿素质量浓度有所提高,且这一变化有时间延迟.

关键词：舟山海域台风上升流叶绿素

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何谓无知?

复旦学报（社会科学版） 2023年第6期65卷 83-91页

作者：王聚惠丽云复旦大学哲学学院上海200433

何谓无知?这是一个看似简单却不容易回答的问题。无知的标准观认为无知就是缺乏知识。标准观受到多种语言用法的支持,还能借助当代知识论对知识的系统分析刻画出不同种类的无知。但是最近知识论学界出现了一个与之不同的新观点,该观点... 详细信息

何谓无知?这是一个看似简单却不容易回答的问题。无知的标准观认为无知就是缺乏知识。标准观受到多种语言用法的支持,还能借助当代知识论对知识的系统分析刻画出不同种类的无知。但是最近知识论学界出现了一个与之不同的新观点,该观点认为无知就是缺乏真信念。新观点的支持者提出了无知归赋的论证与无知具有辩解作用的论证。本文指出,前一个论证既没有注意到无知在概念上所具有的否定性,也混淆了命题性无知与事实性无知,而后一个论证忽略了无知发挥辩解作用的前提———行动者的意图,因此支持新观点的两个论证都不成功。此外,本文回应了标准观点与预设投射规则之间的冲突,并结合“信息茧房”现象展现其更强的解释力。最终看来,相比于新观点,无知的标准观仍然是更合理的观点。

关键词：无知知识真信念道德责任信息茧房

The Occurrence of Oleananes in the Beibuwan Basin and Its Application to the Study of Maturity and Oil-Source Rock Correlation

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Acta Geologica Sinica(English Edition) 2008年第3期82卷 585-595页

作者： LI Meijun WANG Tieguan LIU ju ZHANG Meizhu LU Hong MA Qinglin GAO Lihui State Key Laboratory of Petroleum Resource and Prospecting Earth Sciences and Geoinformatics School China University of Petroleum Beijing 102249 China Southern Oil Exploration and Development Company PetroChina Guangzhou 510640 China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510240 China

The oleanane parameter, i.e., OP （oleananes/（oleananes＋C30hopanes）） in the two sedimentary columns of the Beibuwan Basin, South China Sea, can be used to delimit the top of oil generation window, with Ro （/%） of 0.53 in Well M1 and 0.55 in Wells H1/Hd1/Hd2, respectively. Comparing with vitrinite reflectance （Ro/%）, the OP features a dynamic range and can indicate the oil generation window more precisely. By using OP and other geochemical indices, the oil-source correlation is also conducted. It suggests that the oils in wells M1 and M2 are derived from the source rocks in situ. The mudstone in Huachang uplift is not the main source rocks for oils in this area, The OP is also a useful oil-source correlation parameter in some Tertiary lacustrine basins.

关键词： oleanane parameter (OP) biomarker maturity oil-source correlation Fushan Depression

Block copolymer assisted topochemical polymerization:A facile and efficient route to robust polymeric nanoporous membranes decorated with versatile amino acids

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Chinese Chemical Letters 2020年第3期31卷 885-889页

作者： Yun Liang Wanyue Ouyang Peng Wang Wanlin Zhang Shiqiang Wang Li Tian Yong ju Guangtao Li Key Lab of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing 100084China

Based on block copolymer assisted topochemical polymerization,a new strategy for facilely producing robust nanoporous membranes with controlled incorporation of functional groups onto nanopores is *** exemplified by preparing nanoporous polypyrrole decorated with amino acids,this strategy exhibits a high degree of freedom for tailoring the surface functionality in the created pores.

关键词： Block copolymer Supramolecular ensemble Topochemical polymerization Nanoporous membranes Pore functionalization

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中国区域生态用地分类的研究进展

中国土地科学 2016年第9期30卷 28-36页

作者：谭永忠赵越曹宇何巨浙江大学公共管理学院土地管理系浙江杭州310058

研究目的:总结和梳理中国区域生态用地分类的相关研究文献,分析中国区域生态用地分类的特点,提出中国区域生态用地的分类体系,为中国区域生态用地的利用和管理提供科学依据。研究方法:文献资料法、归纳分析法和比较分析法。研究结果:当... 详细信息

研究目的:总结和梳理中国区域生态用地分类的相关研究文献,分析中国区域生态用地分类的特点,提出中国区域生态用地的分类体系,为中国区域生态用地的利用和管理提供科学依据。研究方法:文献资料法、归纳分析法和比较分析法。研究结果:当前中国对生态用地的内涵缺乏统一的界定,现有的土地利用分类体系对土地的生态属性考虑不足,导致生态用地分类缺乏统一的标准以及生态用地难以得到有效保护。研究结论:(1)应从"泛生态功能论"的视角来界定区域生态用地的内涵,将耕地等以生产功能为主,同时具有较为重要的生态功能的土地纳入生态用地范畴,但应排除建设用地范围内的绿化用地;(2)基础性生态用地是维护区域生态环境安全最重要的自然本底,为了加强对基础性生态用地保护和管理的针对性,在分类体系中应突出基础性生态用地;(3)区域生态用地可采用三级分类,一级类可分为基础性生态用地、保全性生态用地和辅助性生态用地三大类;(4)为有利于对现有土地利用现状调查数据的应用,建议生态用地分类体系中三级分类的名称设置和内涵尽量与现行的《土地利用现状分类》国家标准相衔接。

关键词：土地生态区域生态用地分类生态功能

基于参数自适应优化聚类的卫星状态异常检测方法

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空间科学学报 2023年第5期43卷 927-937页

作者：赵玉炜苏举中国科学院国家空间科学中心北京100190 中国科学院大学北京100049

对卫星在轨状态进行实时监测和异常检测,有利于保障卫星安全稳定运行。为解决在利用聚类分析检测卫星异常过程中,通过网格搜索选择最佳聚类超参数时精细度差、效率低的问题,本文将聚类超参数选择转化为单目标优化问题,并基于智能优化算... 详细信息

对卫星在轨状态进行实时监测和异常检测,有利于保障卫星安全稳定运行。为解决在利用聚类分析检测卫星异常过程中,通过网格搜索选择最佳聚类超参数时精细度差、效率低的问题,本文将聚类超参数选择转化为单目标优化问题,并基于智能优化算法的启发式搜索能力,提出了超参数自适应优化的聚类算法UMOEAsII_BIRCH。为验证自适应搜索的有效性,在卫星遥测数据集和公开数据集上进行了测试。以网格搜索为基准,分别选取基于划分、基于密度和基于层次的聚类算法,对比自适应搜索和网格搜索两种方式下,异常检测的F1-score和算法执行时间。实验结果表明,自适应搜索克服了网格搜索中精细度与效率的矛盾,不受网格点的限制,异常检测效果优于基准方法,且在算法执行效率上具有显著优势。

关键词：遥测数据异常检测聚类分析进化算法网格搜索参数自适应优化

Long non-coding RNA NONMMUG014387 promotes Schwann cell proliferation after peripheral nerve injury

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Neural Regeneration Research 2017年第12期12卷 2084-2091页

作者： Bin Pan Zhong-ju Shi Jia-yin Yan Jia-he Li Shi-qing Feng Department of Orthopedics Tianjin Medical University General Hospital Tianjin China

Schwann cells play a critical role in peripheral nerve regeneration through dedifferentiation and proliferation. In a previous study, we performed microarray analysis of the sciatic nerve after injury. Accordingly, we predicted that long non-coding RNA NONMMUG014387 may promote Schwann cell proliferation after peripheral nerve injury, as bioinformatic analysis revealed that the target gene of NONMMUG014387 was collagen triple helix repeat containing 1（Cthrc1）. Cthrc1 may promote cell proliferation in a variety of cells by activating Wnt/PCP signaling. Nonetheless, bioinformatic analysis still needs to be verified by biological experiment. In this study, the candidate long non-coding RNA, NONMMUG014387, was overexpressed in mouse Schwann cells by recombinant adenovirus transfection. Plasmid p HBAd-MCMV-GFP-NONMMUG014387 and p HBAd-MCMV-GFP were transfected into Schwann cells. Schwann cells were divided into three groups： control（Schwann cells without intervention）, Ad-GFP（Schwann cells with GFP overexpression）, and Ad-NONMMUGO148387（Schwann cells with GFP and NONMMUGO148387 overexpression）. Cell Counting Kit-8 assay was used to evaluate proliferative capability of mouse Schwann cells after NONMMUG014387 overexpression. Polymerase chain reaction and western blot assay were performed to investigate target genes and downstream pathways of NONMMUG014387. Cell proliferation was significantly increased in Schwann cells overexpressing lnc RNA NONMMUG014387 compared with the other two groups. Further, compared with the control group, m RNA and protein levels of Cthrc1, Wnt5 a, ROR2, Rho A, Rac1, JNK, and ROCK were visibly up-regulated in the Ad-NONMMUGO148387 group. Our findings confirm that long non-coding RNA NONMMUG014387 can promote proliferation of Schwann cells surrounding the injury site through targeting Cthrc1 and activating the Wnt/PCP pathway.

关键词： nerve regeneration peripheral nerve injury Schwann cells long non-coding RNAs proliferation Wnt/PCP pathway Cell CountingKit-8 assay adenovirus overexpression sciatic nerve Cthrcl neural regeneration