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Arabidopsis AT-hook Protein TEK Positively Regulates the Expression of Arabinogalactan Proteins for Nexine Formation

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Molecular Plant 2015年第2期8卷 251-260页

作者： Qi-Shi dia Jun Zhu Xiao-Feng Xu yue lou Zhan-Lin Zhang Zhi-Ping Zhang Zhong-Nan Yang College of Life and Environment Sciences Shanghai Normal University Shanghai 200234 China National Key Laboratory of Plant Molecular Genetics Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China College of Agriculture Henan University of Science and Technology Luoyang 471003 China

Nexine is a conserved layer of the pollen wall. We previously reported that the nexine layer is absent in the knockout mutant of Arabidopsis TRANSPOSABLE ELEMENT SILENCING VIA AT-HOOK （TEK） gene. In this study, we investigated the molecular regulatory functions of TEK in pollen development and identified the genes encoding Arabinogalactan proteins （AGPs） as direct targets of TEK, which are essential for nexine formation. Phenotypic similarity between tek and the TEK-SRDX transgenic lines suggest that TEK plays a role in transcriptional activation in anther development. Microarray analysis identified a total of 661 genes downregulated in tek, including four genes encoding AGPs, AGP6, AGP11, AGP23, and AGP40. Electrophoretic mobility shift assays showed that TEK could directly bind the nuclear matrix attachment region （MAR） and the promoter of AGP6. Chromatin immunoprecipitation followed by PCR analysis demonstrated that TEK is enriched in the promoters of the four AGP genes. Expression of AGP6 driven by the TEK promoter in tek partially rescued both nexine formation and plant fertility. These results indicate that TEK directly reg- ulates AGP expression in the anther to control nexine layer formation. We also proposed that glycoproteins might be essential components of the nexine laver in the oollen wall.

关键词： cell walls development pollen development nexine

Microwave Assisted Hydrothermal Way Towards Highly Crystalized N-Doped Carbon Quantum Dots and Their Oxygen Reduction Performance

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Chemical Research in Chinese Universities 2019年第2期35卷 171-178页

作者： HUANG He LIANG Chen SHA Haoyan YU Ying lou yue CHEN Cailing LI Chunguang CHEN Xiaobo SHI Zhan FENG Shouhua State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012P.R.China School of Engineering EMIT UniversityCarltonVIC 3053Australia Department of Chemical Engineering University of CaliforniaDavisCA 95616USA

We proposed a green microwave-assisted hydrothermal way to synthesize highly crystalized N-doped carbon quantum dots(N-CQDs).The N-CQDs obtained by this microwave method have good crystalline degree(ID/IG=0.6)and a high molar ratio of N/C(11.1%)comparing with those obtained from traditional top-down *** experimental results show that glycerine plays a key role ill the fonnation of highly crystalized *** as-prepared N-CQDs have good luminescent property and may be utilized as fluorescent probe to detect ions or mark *** the majority of N atoms in the N-CQDs were pyridinic type(64.8%),the as-prepared N-CQDs were used as a catalyst for the oxygen reduction reaction(ORR)electrocatalysis in the anode of the fuel cell(the onset potential is-0.121V),which was a 4e-transfer procedure and the catalyst showed good stability after 100 cycles.

关键词： Carbon-dot Nitrogen-dopping Highly-crystalized Oxygen reduction reaction(ORR)

Some special exact solutions in nonlocal Alice-Bob sine-Gordon systems

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Communications in Theoretical Physics 2023年第2期75卷 39-45页

作者： Zong-Ao Zhang Sen-yue lou School of Mathematics and Statistics Ningbo UniversityNingbo315211China School of Physical Science and Technology Ningbo UniversityNingbo315211China

Three nonlocal Alice-Bob sine-Gordon(ABSG) systems with the parity and time reversal nonlocality and/or space-time exchange nonlocality are investigated. For the common local SG equation, two types of N-soliton solutions and three types of periodic solutions are presented. The multiple solutions, breather solution, double kink solution, and periodic solutions of the ABSG systems are obtained from the symmetry reductions of a coupled local sine-Gordon system.

关键词： sine-Gordon equation parity and time reversal soliton solutions periodic solutions

Multiple Darboux–B?cklund transformations via truncated Painleve′ expansion and Lie point symmetry approach

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Chinese Physics B 2018年第6期27卷 103-108页

作者： Shuai-Jun Liu Xiao-Yan Tang Sen-yue lou Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai 200062 China Ningbo Collabrative Innovation Center of Nonlinear Harzard System of Ocean and Atmosphere and Faculty of Science Ningbo University Ningbo 315211 China

For a given truncated Painleve′ expansion of an arbitrary nonlinear Painleve′ integrable system, the residue with respect to the singularity manifold is known as a nonlocal symmetry, called the residual symmetry, which is proved to be localized to Lie point symmetries for suitable prolonged systems. Taking the Korteweg–de Vries equation as an example, the n-th binary Darboux–Ba¨cklund transformation is re-obtained by the Lie point symmetry approach accompanied by the localization of the n-fold residual symmetries.

关键词： residue symmetry multiple Darboux-Baicklund transformation Lie point symmetry approach

Smart phosphorescence from solid to water through progressive assembly strategy based on dual phosphorescent sources

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Aggregate

Aggregate 2023年第5期4卷 224-234页

作者： Qing-Qing Xia Xing-Huo Wang Jia-Lin Yu Zhong-Yuan Chen Xin-yue lou Xiaomin Liu Ming-Xue Wu Ying-Wei Yang College of Chemistry and Chemical Engineering Qingdao UniversityShandongP.R.China International Joint Research Laboratory of Nano-Macro Architecture Chemistry College of ChemistryJilin UniversityChangchunP.R.China

Developing smart room-temperature phosphorescence(RTP)materials with facile and efficient strategies have attracted increasing ***,tunable RTP materials with two phosphorescent sources and stepwise enhanced phosphorescence in water are obtained through an in-situ self-assembly strategy based on the sensitization of phosphors by trimesic acid(TMA)through simple doping and the rigidification of phosphors by hydrogen-bonded organic frameworks(HOFs).As expected,doped TMA+phosphors simultaneously promote the RTP emission of phosphors and maintain TMA ***-situ assembled HOF(MATMA)@phosphors facilitate smart RTP emission in water due to the coexistence of phosphorescent HOF(MA-TMA)host and phosphors ***,such RTP materials with good processability demonstrate the application potential in information security,benefitting from their varied afterglow lifetimes and easy luminous recognition in the *** work will inspire the design of dual phosphorescent source RTP systems and provide new strategies for the development of smart RTP materials in water.

关键词： emissive materials hydrogen-bonded organic frameworks luminescence display room-temperature phosphorescence self-assembly

Parallel Driving with Big Models and Foundation Intelligence in Cyber-hysical-ocial Spaces

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Research 2024年第2期2024卷 1-17页

作者： Xiao Wang Jun Huang Yonglin Tian Chen Sun Lie Yang Shanhe lou Chen Lv Changyin Sun Fei-yue Wang School of Artificial Intelligence Anhui UniversityHefeiChina Macao University of Science and Technology MacaoChina State Key Laboratory for Management and Control of Complex Systems Institute of AutomationChinese Academy of SciencesBeijingChina MVSLab Department of Mechanical and Mechatronics EngineeringUniversity of Waterloo200 University Ave WestWaterlooON N2L3G1Canada School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingaporeSingapore

Recent years have witnessed numerous technical breakthroughs in connected and autonomous vehicles (CAVs). On the one hand, these breakthroughs have significantly advanced the development of intelligent transportation systems (ITSs);on the other hand, these new traffic participants introduce more complex and uncertain elements to ITSs from the social space. Digital twins (DTs) provide real-time, data-driven, precise modeling for constructing the digital mapping of physical-world ITSs. Meanwhile, the metaverse integrates emerging technologies such as virtual reality/mixed reality, artificial intelligence, and DTs to model and explore how to realize improved sustainability, increased efficiency, and enhanced safety. More recently, as a leading effort toward general artificial intelligence, the concept of foundation model was proposed and has achieved significant success, showing great potential to lay the cornerstone for diverse artificial intelligence applications across different domains. In this article, we explore the big models embodied foundation intelligence for parallel driving in cyber-physical-social spaces, which integrate metaverse and DTs to construct a parallel training space for CAVs, and present a comprehensive elucidation of the crucial characteristics and operational mechanisms. Beyond providing the infrastructure and foundation intelligence of big models for parallel driving, this article also discusses future trends and potential research directions, and the ?S?goals of parallel driving.

关键词： breakthrough integrate corners

毒死蜱激活小胶质细胞对多巴胺能神经元的影响

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生物医学工程学杂志 2016年第3期33卷 506-511页

作者：楼跃李雅国浙江医院神经内科杭州310000

小胶质细胞的激活可导致神经元损伤,从而导致神经退行性疾病如帕金森病的发病。为了探讨毒死蜱(CPF)对小胶质细胞激活、炎症因子表达分泌,以及对多巴胺能神经元存活率的影响,本研究采用逆转录-聚合酶链反应(RT-PCR)、Western blot检测CP... 详细信息

小胶质细胞的激活可导致神经元损伤,从而导致神经退行性疾病如帕金森病的发病。为了探讨毒死蜱(CPF)对小胶质细胞激活、炎症因子表达分泌,以及对多巴胺能神经元存活率的影响,本研究采用逆转录-聚合酶链反应(RT-PCR)、Western blot检测CPF刺激BV-2细胞(0、1、3、6、12、24h)后BV-2细胞形态的改变及诱导型一氧化氮合成酶(iNOS)、环氧化酶2(COX-2)mRNA和蛋白表达的变化;然后将BV-2细胞分为CPF组、DMSO对照组、NS对照组,分别刺激BV-2细胞12h后,将各BV-2细胞培养液加入SH-SY5Y细胞共培养24h。采用MTT方法检测经不同处理的BV-2细胞的条件培养液对SH-SY5Y存活率的影响。发现CPF作用下,BV-2小胶质细胞激活,炎症因子iNOS mRNA、COX-2mRNA及其蛋白表达水平均升高。激活的BV-2细胞通过分泌炎症因子造成神经元损伤。总之,CPF作用下小胶质细胞激活产生炎症因子,介导对神经元的损伤,进而可能参与了帕金森病的发病过程。

关键词：毒死蜱小胶质细胞多巴胺能神经元帕金森病

High precision solutions to quantized vortices within Gross-Pitaevskii equation

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Communications in Theoretical Physics 2022年第9期74卷 23-32页

作者： Hao-Hao Peng Jian Deng Sen-yue lou Qun Wang Department of Modern Physics University of Science and Technology of ChinaHefeiAnhui 230026China Institute of Frontier and Interdisciplinary Science Key Laboratory of Particle Physics and Particle Irradiation(MOE)Shandong UniversityQingdaoShandong 266237China School of Physical Science and Technology Ningbo UniversityNingbo 315211China

The dynamics of vortices in Bose-Einstein condensates of dilute cold atoms can be well formulated by Gross-Pitaevskii *** better understand the properties of vortices,a systematic method to solve the nonlinear differential equation for the vortex to very high precision is *** two-point Padéapproximants,these solutions are presented in terms of simple rational functions,which can be used in the simulation of vortex *** precision of the solutions is sensitive to the connecting parameter and the truncation *** can be improved significantly with a reasonable extension in the order of rational *** errors of the solutions and the limitation of two-point Padéapproximants are *** investigation may shed light on the exact solution to the nonlinear vortex equation.

关键词： quantum vortex Gross-Pitaevskii equation two-point Padéapproximants

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利用相位的自旋1/2量子系统的相干控制

控制理论与应用 2008年第2期25卷 187-192页

作者：丛爽楼越升中国科学技术大学自动化系安徽合肥230027

针对两个自旋1/2粒子组成的封闭量子系统,建立了具有Ising相互作用的量子系统模型.在此基础上通过具有特定幅值及相对相位的半反直觉脉冲,制备了相应的量子相干态.并通过系统数值仿真实验,归纳出系统终态与相对相位之间的近似关系式,分... 详细信息

针对两个自旋1/2粒子组成的封闭量子系统,建立了具有Ising相互作用的量子系统模型.在此基础上通过具有特定幅值及相对相位的半反直觉脉冲,制备了相应的量子相干态.并通过系统数值仿真实验,归纳出系统终态与相对相位之间的近似关系式,分析了控制脉冲的幅值和时间延迟对制备过程的影响.利用部分绝热通道技术实现了相位相干控制.

关键词：量子相干控制半反直觉脉冲序列相干态制备相对相位