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Molecular recognition of cyclophanes in water

Chinese Chemical Letters 2024年第5期35卷 32-44页

作者： Fang-Yuan Chen Wen-chao geng Kang Cai Dong-Sheng Guo College of Chemistry State Key Laboratory of Elemento-Organic ChemistryKey Laboratory of Functional Polymer Materials(Ministry of Education)Frontiers Science Center for New Organic MatterCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Nankai UniversityTianjin 300071China College of Chemistry Nankai UniversityTianjin 300071China

Molecular recognition in water,the biological solvent,always receives significant research focus in supramolecular chemistry.The mechanisms of molecular recognition in water is key to comprehending biological processes at the molecular level.Over the past five decades,supramolecular chemists have developed a vast array of synthetic receptors with highly diverse structures and recognition properties.Among them,cyclophanes represent an important family of macrocyclic receptors that have been extensively explored.The aromatic moieties in cyclophanes not only facilitate chemical modifications to impart water solubility but also enable forming hydrophobic cavities for guest inclusion in aqueous environments.Pioneered by Koga et al.,who reported the first inclusion complex of cyclophanes in water and solid state,numerous water-soluble cyclophanes,including derivatives of blue box,calixarenes,resorcinarenes,pillararenes,octopusarenes,biphenarenes,coronarenes,and naphthotubes,etc.,have been synthesized and subjected to investigation of the recognition capabilities in aqueous solutions.This review provides an overview of cyclophane receptors designed to bind organic guests in water.We categorize them into two classes based on the modifications made to their hydrophobic cavities:those with“exo-functionalized hydrophobic cavities”and those with“endo-functionalized hydrophobic cavities”.We introduce their distinctive features and discuss strategies to enhance recognition affinity and selectivity.This review aims to inspire the development of novel synthetic receptors with intriguing properties and foster practical applications of cyclophanes.

关键词： Biomimetic receptor Cyclophane Molecular recognition Hydrophobic effect High-affinity Macrocycles

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Review on recent advances of inorganic electrode materials for potassium-ion batteries

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Tungsten 2024年第1期6卷 174-195页

作者： Jian-Zhen Xiong Ze-Cheng Yang Xin-Liang Guo Xi-Ying Wang chao geng Zong-Fu Sun An-Yong Xiao Quan-chao Zhuang Ya-Xin Chen Zhi-Cheng Ju School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China

Rechargeable potassium-ion batteries(PIBs)have great potential in the application of electrochemical energy storage devices due to the low cost,the abundant resources and the low standard reduction potential of potassium.As electrode materials are the key factors to determine the electrochemical performance of devices,relevant research is being carried out to build high-performance PIBs.In recent years,significant progress has been made in the study of the design of inorganic electrode materials.Herein,we review the cathode materials(Prussian blue and its analogues,layered oxides and poly anionic compounds)and the anode materials(antimony-based,selenium-based and bismuth-based compounds).On the basis of previous work,the structural design principles for improving the performance of electrode materials are reasonably summarized.At the same time,the problems that need to be solved in the preparation of electrode materials and the direction of future research and improvement are pointed out.

关键词： Inorganic electrode materials Potassium-ion batteries Cathode materials Anode materials

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唐宋墓葬中的猫及相关问题

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河北大学学报（哲学社会科学版） 2024年第1期49卷 78-88页

作者：耿超河北大学宋史研究中心河北保定071002

唐宋时期,墓葬中不只发现作为宠物殉葬的猫骨、猫瓷塑,而且砖雕与壁画中还出现了大量的猫形象,这是墓葬习俗变化的结果,也表明养猫已成为一种别具意趣的生活文化。猫对人类的吸引力,不仅是由于捕鼠的实用价值,猫的外表、天性以及与人类... 详细信息

唐宋时期,墓葬中不只发现作为宠物殉葬的猫骨、猫瓷塑,而且砖雕与壁画中还出现了大量的猫形象,这是墓葬习俗变化的结果,也表明养猫已成为一种别具意趣的生活文化。猫对人类的吸引力,不仅是由于捕鼠的实用价值,猫的外表、天性以及与人类情感交流互动的能力,促使它们融入了人类的生活,改变了人类的生活方式。此时期,猫的捕鼠护书功能以及文人对猫特定的情感想象结合在一起,塑造出一种雅的生活情境,猫也成为士大夫交往的媒介。猫作为宠物走入人类家庭与此时期物质文明与精神文明的高度发展有关。

关键词：唐宋时期墓葬猫日常生活

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Tomato mottle mosaic virus: Characterization, resistance gene effectiveness, and quintuplex RT-PCR detection system

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Journal of Integrative Agriculture 2022年第9期21卷 2641-2651页

作者： Carlos Kwesi TETTEY YAN Zhi-yong MA Hua-yu ZHAO Mei-sheng geng chao TIAN Yan-ping LI Xiang-dong Shandong Provincial Key Laboratory of Agricultural Microbiology College of Plant ProtectionShandong Agricultural University Tai'an 271018P.R.China

Tomato mottle mosaic virus(ToMMV), an economically important species of the genus Tobamovirus, causes significant loss in yield and quality of tomato fruits. Here, we identified the Shandong isolate of ToMMV(ToMMV-SD) collected from symptomatic tomato fruits in Weifang, Shandong Province of China. ToMMV-SD caused symptoms such as severe mosaic, mottling, and necrosis of tomato leaves, yellow spot and necrotic lesions on tomato fruits. The obtained full genome of ToMMV-SD was 6 399 nucleotides(accession number MW373515) and had the highest identity of 99.5% with that of isolate SC13-051 from the United States of America at the genomic level. The infectious clone of ToMMV-SD was constructed and induced clear mosaic and necrotic symptoms onto Nicotiana benthamiana leaves. Several commercial tomato cultivars, harboring Tm-2~2 resistance gene, and pepper cultivars, containing L resistance gene, were susceptible to ToMMV-SD. Plants of Solanum melongena(eggplant) and Brassica pekinensis(napa cabbage) showed mottling symptoms, while N. tabacum cv. Zhongyan 100 displayed latent infection. ToMMV-SD did not infect plants of N. tabacum cv. Xanthi NN, Brassica rapa ssp. chinensis(bok choy), Raphanus sativus(radish), Vigna unguiculata cv. Yuanzhong 28-2(cowpea), or Tm-2~2 transgenic N. benthamiana. A quintuplex RT-PCR system differentiated ToMMV from tomato mosaic virus, tomato brown rugose fruit virus, tobacco mosaic virus, and tomato spotted wilt virus, with the threshold amount of 0.02 pg. These results highlight the threat posed by ToMMV to tomato and pepper cultivation and offer an efficient detection system for the simultaneous detection of four tobamoviruses and tomato spotted wilt virus infecting tomato plants in the field.

关键词： host range multiplex RT-PCR resistance genes symptom Tobamovirus tomato mottle mosaic virus

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抗干扰的多智能体系统固定时间分布式优化算法

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控制与决策 2024年第2期39卷 527-535页

作者：耿超武永宝孙佳刘剑薛磊东南大学苏州联合研究生院江苏苏州215123 东南大学自动化学院南京210096

针对一阶多智能体系统提出一种抗干扰的分布式控制算法,在固定时间内解决具有状态约束和外部扰动存在情况下的多智能体系统凸优化问题.该算法分为两部分:第1部分使得每个智能体在任意初始条件下都能在固定时间内收敛到一致;第2部分在满... 详细信息

针对一阶多智能体系统提出一种抗干扰的分布式控制算法,在固定时间内解决具有状态约束和外部扰动存在情况下的多智能体系统凸优化问题.该算法分为两部分:第1部分使得每个智能体在任意初始条件下都能在固定时间内收敛到一致;第2部分在满足状态约束条件的同时,使所有局部目标函数的总和在固定时间内取得最小值.该算法能够在外部有界扰动存在的情况下抑制干扰信号,获得最优解,且收敛时间不受初始状态和外部扰动的影响,可以根据任务需求离线地预分配任务建立时间.利用凸优化和固定时间李雅普诺夫稳定性理论证明算法在有界扰动存在时的固定时间收敛性,最后通过智能电网中经济调度问题的实例验证算法的有效性和优越性.

关键词：固定时间收敛分布式控制多智能体系统抗干扰状态约束凸优化

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Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin,SW China

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Petroleum Exploration and Development 2023年第2期50卷 388-403页

作者： WANG Dong LIU Hong TANG Song BAI Jinhao ZHOU Gang LI Zhengyong LIANG Feng TAN Xiucheng geng chao YANG Ying State Key Laboratory of Oil and Gas Reservoir Geology and Exploration Southwest Petroleum UniversityChengdu 610500China Sichuan Natural Gas Geology Key Laboratory Southwest Petroleum UniversityChengdu 610500China Southwest Petroleum University Division of Key Laboratory of Carbonate ReservoirsCNPCChengdu 610500China Central Sichuan Oil and Gas District PetroChina Southwest Oilfield CompanySuining 629000 Research Institute of Petroleum Exploration and Development PetroChina Southwest Oilfield CompanyChengdu 610041China Gas Production Administrative Department of Northern Central Sichuan Gas District PetroChina Southwest Oilfield CompanySuining 629000China Southern Sichuan Gas District PetroChina Southwest Oilfield CompanyLuzhou 646000China

Based on the comprehensive analysis of core, thin section, logging and seismic data, this study carried out the identification and comparison of Permian Changxing Formation sequences, clarified the typical sedimentary architectures of intra-platform shoal, investigated the vertical and horizontal development and distribution of intra-platform shoal in each sequence, and thus established the sedimentary evolution model of shoal body. The study results are reflected in four aspects.First, there are two complete third-order sequences(SQ1 and SQ2) in Changxing Formation in central Sichuan Basin. SQ1 is generally thick in the north and thin in the south, and SQ2 shows a thickness differentiation trend of “two thicknesses and three thinnesses”. Second, the Changxing Formation in central Sichuan Basin mainly develops intra-platform shoal, inter-shoal sea and intra-platform depression subfacies. In the vertical direction, the intra-platform shoal mainly presents two typical sedimentary sequences: stable superposed and high-frequency interbedded. Third, the stable superimposed sedimentary sequence is developed in the shoal belt at the edge of intra-platform depression, which is composed of two shoal-forming periods and located in the highstand systems tracts(HSTs) of SQ1 and SQ2. The high-frequency interbedded sedimentary sequence is developed in the southern shoal belt of intra-platform depression, which is composed of four shoal-forming periods and mainly located in the HST of SQ2. Fourth, during the SQ1 deposition, the intra-platform shoal was mainly developed at the edge of the intra-platform depression on the north side of the study area, and the inter-shoal sea subfacies was mainly developed on the south side. During the SQ2 deposition, the intra-platform shoal was widely developed in the area, forming two nearly parallel intra-platform shoal belts. The study results provide direction and ideas for exploration of Changxing Formation intra-platform shoal reservoirs in central Sichuan Basin.

关键词： Sichuan Basin Permian Changxing Formation intra-platform shoal sequence stratigraphic framework typical sedimentary sequence sedimentary evolution model

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SIRT1 Mediates Sestrin1-Induced Improvement in Hepatic Insulin Resistance

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Biomedical and Environmental Sciences 2022年第1期35卷 79-83页

作者： geng chao XUE Yuan YANG Jia Hui GAO Ming Yue ZHAO Wei LI Chun Mei XIE Xiang Hong ZHANG Wei Hong ZHANG Hua Bing FANG Fu De YAO Hong LIU Xiao Jun State Key Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences&School of Basic Medicine Peking Union Medical CollegeBeijing 100005China Department of Microbiology and Immunology Shanxi Medical UniversityTaiyuan 030001ShanxiChina Department of Biochemistry and Molecular Biology School of Basic MedicineAnhui Medical UniversityHefei 230032AnhuiChina

Mitochondria are important intracellular organelles that carry out oxidative phosphorylation,synthesize ATP,and provide energy for cell activities.Mitochondrial dysfunction can affect the normal function of the entire cell and is thought to be a major risk factor in the onset and progression of some diseases associated with chronic inflammation and insulin resistance[1].

关键词： SIRT1 inflammation Hepatic

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Simulation of the characteristics of low-energy proton induced single event upset

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Science China(Physics,Mechanics & Astronomy) 2014年第10期57卷 1902-1906页

作者： geng chao XI Kai LIU TianQi LIU Jie Institute of Modern Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

Monte Carlo simulation results are reported on the single event upset(SEU) triggered by the direct ionization effect of low-energy proton. The SEU cross-sections on the 45 nm static random access memory(SRAM) were compared with previous research work, which not only validated the simulation approach used herein, but also exposed the existence of saturated cross-section and the multiple bit upsets(MBUs) when the incident energy was less than 1 MeV. Additionally, it was observed that the saturated cross-section and MBUs are involved with energy loss and critical charge. The amount of deposited charge and the distribution with respect to the critical charge as the supplemental evidence are discussed.

关键词：单粒子翻转低能量质子模拟静态随机存取存储器特性 MBUS 横截面

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Diffusion mechanism simulation of cloud manufacturing complex network based on cooperative game theory

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Journal of Systems Engineering and Electronics 2018年第2期29卷 321-335页

作者： geng chao QU Shiyou XIAO Yingying WANG Mei SHI Guoqiang LIN Tingyu XUE Junjie JIA Zhengxuan Economics and Management School Harbin Institute of Technology at Weihai Beijing Complex Product Advanced Manufacturing Engineering Research Center Beijing Simulation Center State Key Laboratory of Intelligent Manufacturing System Technology Beijing Institute of Electronic System Engineering Science and Technology on Space System Simulation Laboratory Beijing Simulation Center

Cloud manufacturing is a specific implementation form of the "Internet + manufacturing" strategy. Why and how to develop cloud manufacturing platform(CMP), however, remains the key concern of both platform operators and users. A microscopic model is proposed to investigate advantages and diffusion forces of CMP through exploration of its diffusion process and mechanism. Specifically, a three-stage basic evolution process of CMP is innovatively proposed. Then, based on this basic process, a more complex CMP evolution model has been established in virtue of complex network theory, with five diffusion forces identified. Thereafter, simulations on CMP diffusion have been conducted. The results indicate that, CMP possesses better resource utilization,user satisfaction, and enterprise utility. Results of simulation on impacts of different diffusion forces show that both the time required for CMP to reach an equilibrium state and the final network size are affected simultaneously by the five diffusion forces. All these analyses indicate that CMP could create an open online cooperation environment and turns out to be an effective implementation of the "Internet + manufacturing" strategy.

关键词： complex network cloud manufacturing innovation diffusion network effect Gale-Shapley algorithm cooperative game theory

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Single-Machine Preemptive Scheduling with Release Dates Involving the Total Weighted Late Work Criterion

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Journal of the Operations Research Society of China 2023年第3期11卷 693-706页

作者： Zhi-chao geng Yuan Zhang School of Mathematics and Statistics Zhengzhou UniversityZhengzhouHenan450001China

This paper investigates the preemptive scheduling with release dates on a single machine to minimize the total weighted late work.We firstly present an O(nlogn)-time algorithm for the single-agent problem with disagreeable weights and due dates.And then,we extendedly study the two-agent Pareto-scheduling problem with jobs having a common due date to minimize each agent's total weighted late work,and give a polynomial-time algorithm that is based on the parameters analysis to generate the Pareto frontier.

关键词： Preemptive scheduling Total weighted late work Two agent Pareto frontier

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