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Size and Dynamics of Ring Polymers under Different Topological Constraints

Chinese Journal of Polymer Science 2023年第4期41卷 516-524,I0006页

作者： jiang-yang mo Zhen-Hua Wang Yu-Yuan Lu Li-Jia An State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China University of Science and Technology of China Hefei230026China

The impact of ring polymer length N and the influence of interchain and intrachain interactions on the size and dynamic behaviors of ring polymers,including the structural relaxation time τ_(R) and self-diffusion coefficient D,remain poorly understood at present due to a lack of systematic studies with relatively large N *** work addressed this issue by applying dynamic monte Carlo simulations with independently tuned interchain and intrachain interactions to investigate the size and dynamics of the ring melts with chain lengths over a wide range of 0.2N_(e)≤N≤80N_(e)(N_(e) is the entanglement length of corresponding linear chains)under different topological constraints,including all-crossing and intercrossing *** found that it was inappropriate to treat the unknotting constraint free energy of the ring chains in the melts as the free energy contributed by the excluded volume interactions of polymers in a good *** exponents of 2.5 and 1.5 reflecting the Ndependence of τ_(R) were obtained for long ring chains in non-crossing and intra-crossing systems,respectively,suggesting that the ring chains behaved as individual clusters and exhibited Zimm-like dynamics in intra-crossing systems.A single scaling exponent of-2 reflecting the Ndependence of D was obtained for ring chains in non-crossing and intra-crossing systems,indicating that the intrachain constraints affected only the value of D,and had little influence on the scaling relationship between D and ***,the extended Stokes-Einstein relation broke down for the ring chains in the non-crossing and intra-crossing systems because the structural relaxation and translational diffusion were decoupled for the short ring systems,while both the translational diffusion and rotational relaxations,as well as diffusion at short and long time scales,were decoupled for long ring systems.

关键词： Ring polymer Topological constraint Extended Stokes-Einstein relation monte Carlo simulation

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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying mo Biao Zheng Miaomiao Han Qin Zhong Wenwen yang Peng Gao Lezhi yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

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Microglia lactylation in relation to central nervous system diseases

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Neural Regeneration Research 2025年第1期20卷 29-40页

作者： Hui yang Nan mo Le Tong Jianhong Dong Ziwei Fan Mengxian Jia Juanqing Yue Ying Wang School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of Clinical Laboratory The Fourth Clinical Medical College of Zhejiang University of Traditional Chinese Medicine(Hangzhou First People’s Hospital)HangzhouZhejiang ProvinceChina College of Medical Veterinary and Life SciencesUniversity of GlasgowGlasgowUK Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalWestlake University School of MedicineHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalWestlake University School of MedicineHangzhouZhejiang ProvinceChina

The development of neurodegenerative diseases is closely related to the disruption of central nervous system ***,as innate immune cells,play important roles in the maintenance of central nervous system homeostasis,injury response,and neurodegenerative *** has been considered a metabolic waste product,but recent studies are revealing ever more of the physiological functions of *** is an important pathway in lactate function and is involved in glycolysis-related functions,macrophage polarization,neuromodulation,and angiogenesis and has also been implicated in the development of various *** review provides an overview of the lactate metabolic and homeostatic regulatory processes involved in microglia lactylation,histone versus non-histone lactylation,and therapeutic approaches targeting ***,we summarize the current research on microglia lactylation in central nervous system diseases.A deeper understanding of the metabolic regulatory mechanisms of microglia lactylation will provide more options for the treatment of central nervous system diseases.

关键词： brain central nervous system glycolysis immune response inflammation lactate metabolism lactate lactylation microglia neurodegenerative diseases

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A kind of biomimetic control method to anthropomorphize a redundant manipulator for complex tasks

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Science China(Technological Sciences) 2020年第1期63卷 14-24页

作者： mo yang jiang ZhiHong LI Hui yang Hong HUANG Qiang School of Mechatronic Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing 100081China Key Laboratory of Biomimetic Robots and Systems Ministry of EducationBeijing 100081China Institute of Manned Spacecraft System Engineering China Academy of Space TechnologyBeijing 100080China

It is an urgent problem for robots to operate complex tasks with some unknown motion mechanisms caused by the strong coupling of force and motion. However, humans can perform complex tasks well due to their natural evolution and postnatal training. A novel biomimetic control method based on a human motion mechanism with high movement adaptability is proposed in this paper. The core is to present a novel variable-parameter compliance controller based on human operation mechanisms with an action-planning method derived from optimization by human motion, and the main contribution is to change the parameters of compliance controller according to human operating intention synchronized with humanoid motion;this change could establish a humanoid map between the force and motion for a seven degree-of-freedom redundant manipulator to deal with the unknown motion mechanism in complex tasks, so the redundant manipulator can operate complex tasks with high performance. Sufficient experiments were performed, and the results validated the effectiveness of the proposed algorithm.

关键词： redundant manipulator biomimetic control humanoid mapping complex task

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A novel space target-tracking method based on generalized Gaussian distribution for on-orbit maintenance robot in Tiangong-2 space laboratory

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Science China(Technological Sciences) 2019年第6期62卷 1045-1054页

作者： mo yang jiang ZhiHong LI Hui yang Hong HUANG Qiang School of Mechatronic Engineering Beijing Institute of Technology Beijing 100081 China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing 100081 China Key Laboratory of Biomimetic Robots and Systems Ministry of Education Beijing 100081 China Institute of Manned Spacecraft System Engineering China Academy of Space Technology Beijing 100080 China

Accurate target tracking based on visual images is the key for intelligent robots to assist or replace astronauts to work in space station. However, the special space environment such as non-uniform illumination and high-energy particle radiation is a huge challenge, which may lead to complex noise coupling in vision image. This paper proposes a novel method for accurate target tracking, the essence of which is the Retinex image enhancement algorithm in CIELAB color space(LAB-GRetinex) and the generalized maximum correntropy Kalman filter(GMCKF) which are all based on generalized Gaussian distribution. The LABGRetinex algorithm chooses the CIELAB color space, which is closer to the human vision, as the processing color space, and the generalized Gaussian distribution can estimate the light image accurately, so the influence of non-uniform illumination can be reduced effectively. Meanwhile, the GMCKF algorithm adopts the generalized correntropy criterion based on the generalized Gaussian distribution to replace the minimum mean square error(MMSE) criterion to realize the optimal filtering effect under the complex non-Gaussian noise, which can improve the target tracking accuracy. Sufficient ground simulation experiments and application experiments in the Tiangong-2 space laboratory verify the effectiveness of the proposed algorithm which can track the target accurately in the special space environment and provide the precise pose information for on-orbit robot maintenance verification. This research lays a technical foundation for the application of intelligent robot in the construction and operation on space station in the future.

关键词： space robot LAB-GRetinex GMCKF target tracking

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Scaffold-based tissue engineering strategies for soft-hard interface regeneration

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Regenerative Biomaterials 2023年第1期10卷 107-125页

作者： Yibo Li mo Zhou Wenzhuo Zheng Jianying yang Nan jiang State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseaseWest China Hospital of StomatologySichuan UniversityChengduChina Department of Outpatient nursing West China Second University Hospital&Key Laboratory of Birth Defects and Related Diseases of Women and Children(Sichuan University)Ministry of EducationSichuan UniversityChengduChina

Repairing injured tendon or ligament attachments to bones(enthesis)remains costly and *** superb surgical management,the disorganized enthesis newly formed after surgery accounts for high recurrence rates after *** engineering offers efficient alternatives to promote healing and regeneration of the specialized enthesis ***-transmitting functions thus can be restored with appropriate biomaterials and engineering ***,recent studies have focused more on microstructure especially the arrangement of fibers since Rossetti successfully demonstrated the variability of fiber underspecific external *** this review,we provide an important update on the current strategies for scaffold-based tissue engineering of enthesis when natural structure and properties are equally *** firstly described compositions,structures and features of natural enthesis with their special mechanical properties *** for growth,development and healing of enthesis widely used in popular strategies are systematically *** discuss the fabrication of engineering scaffolds from the aspects of biomaterials,techniques and design strategies and comprehensively evaluate the advantages and disadvantages of each *** last,this review pinpoints the remaining challenges and research directions to make breakthroughs in further studies.

关键词： enthesis tissue engineering interface mechanical properties biomaterials

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Engineering the interface of porous ComoO_(3)nanosheets with Co_(3)mo nanoparticles for high-performance electrochemical overall water splitting

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Journal of Materials Science & Technology 2023年第6期137卷 184-192页

作者： Haibin Ma Xuejing yang Zhili Wang Qing jiang Key Laboratory of Automobile Materials Ministry of Educationand School of Materials Science and EngineeringJilin UniversityChangchun 130022China

The design of high-performance electrocatalysts for alkaline water splitting is of significant importance for the development of a sustainable hydrogen ***,heterostructured Co_(3)mo nanoparti-cles/porous ComoO_(3)nanosheets(Co_(3)mo/ComoO_(3)NPSs)were constructed for alkaline water splitting by annealing ComoO x nanosheets under controlled *** to its interfacial electronic structure and increased electrochemical active area,Co_(3)mo/ComoO_(3)NPSs exhibit impressive hydrogen evolution reaction(HER)activity with an overpotential of 334 mV at 1000 mA cm^(-2) and a Tafel slope of 46.4 mV per decade in 1.0 M KOH,which outperforms Pt/C catalyst(621 mV and 74.7 mV per decade).Density functional theory calculations illustrate the electron transfer from Co_(3)mo to ComoO_(3)at the interfaces,where electron accumulation on ComoO_(3)favors the dissociation of H_(2)O molecule,and electron-deficient Co atoms in Co_(3)mo have optimized H∗absorption energy for *** Co_(3)mo/ComoO_(3)NPSs also exhibit higher oxygen evolution reaction activity than the RuO_(2)***,the water electrolyzer us-ing Co_(3)mo/ComoO_(3)NPSs as both cathode and anode only requires 1.59 V to deliver a current density of 100 mA cm^(-2)in 1.0 M KOH,which outperforms benchmark Pt/C||RuO_(2)electrodes couple with 1.69 V to reach the same current density,providing great potential for large-scale applications.

关键词： Interface engineering Heterostructures Interfacial electronic structure Hydrogen evolution reaction Overall water splitting

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Analysis of the Stability and Mechanical Characteristics of the Jointed Surrounding Rock and Lining Structure of a Deeply Buried Hydraulic Tunnel

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Fluid Dynamics & Materials Processing 2022年第1期18卷 29-39页

作者： Changchang Li Zuguo mo Haibo jiang Fengchun yang College of Water and Architectural Engineering Shihezi UniversityShihezi832000China College of Water Resources and Hydropower Sichuan UniversityChengdu610065China

On-site monitoring and numerical simulation have been combined to analyze the stability of the jointed surrounding rock and the stress inside the lining structure of a sample deeply buried hydraulic *** show that the deformation around the tunnel was mainly concentrated in the range 51.37 mm∼66.73 mm,the tunnel circumference was dominated by shear failure,and the maximum plastic zone was about 3.90 *** the shotcrete treatment was performed immediately after the excavation,the deformation of the surrounding rock was reduced by 58.94%∼76.31%,and the extension of the plastic zone was relatively limited,thereby leading to improvements in terms of the stability of surrounding *** the support was provided at different time points,the stress of the surrounding rock in the shallow part of the tunnel was improved *** the tunnel section with high ground stress and joint development,when 10 cm steel fiber concrete spray layer and 40 cm C25 concrete secondary lining were used,the maximum tensile stress on the lining structure was 0.89 MPa,i.e.,it was less than the tensile strength of concrete,which indicates that the internal force of the lining can meet the overall requirements.

关键词： Diversion tunnel high ground stress lining mechanical characteristics numerical simulation

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法治是中国式现代化的重要保障

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新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 7-16,F0002页

作者：莫纪宏中国社会科学院法学研究所北京100720

党的二十届三中全会审议通过的《中共中央关于进一步全面深化改革、推进中国式现代化的决定》明确提出“法治是中国式现代化的重要保障”,对法治与现代化之间的辩证关系从理论与实践相结合的角度作出系统阐述,对不断完善和健全法治在保... 详细信息

党的二十届三中全会审议通过的《中共中央关于进一步全面深化改革、推进中国式现代化的决定》明确提出“法治是中国式现代化的重要保障”,对法治与现代化之间的辩证关系从理论与实践相结合的角度作出系统阐述,对不断完善和健全法治在保障中国式现代化中的能力,推动法治与现代化同频共振、并肩前行发挥了政策引领作用。从法理层面准确认识法治对中国式现代化的保障机制和制度功能,要从历史维度、政治维度、理论维度、比较维度和实践维度“五个维度”有机统一的角度认识中国式现代化的具体特征和制度形态,针对不同层面的中国式现代化目标采取不同性质的法治应对和保障措施。法治在中国式现代化进程中,通过保障制度现代化推进中国式现代化。其中,法治自身也需要现代化。没有法治现代化就没有社会主义现代化。法治在推进中国式现代化过程中,通过不断提升自身效能和保障能力,逐步实现自身的现代化,成为中国式现代化事业的重要组成部分。

关键词：法治中国式现代化历史维度政治维度理论维度比较维度实践维度

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Co_(2)P nanorods with exposure of high-index facets for efficient photochemical reduction of CO_(2)by promoting the directional transfer of electrons

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Journal of Energy Chemistry 2022年第10期31卷 322-329,I0008页

作者： Yong Xu jiang mo Jianfei Long Lingxiao Tu Weili Dai Lixia yang Shenglian Luo Key Laboratory of jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063JiangxiChina Key Laboratory of Photochemical Conversion and Optoelectronic Materials and HKU-CAS Joint Laboratory on New Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Herein,Co_(2)P nanorods(NRs)with exposure to high-index facets(HIFs)were prepared by a special assembly-calcination method using thioacetamide(TAA)as a structure-directing *** analysis of adsorption energies of S atoms on different facets as well as the surface energies of Co_(2)P indicate that the HIFs become more stable after adsorbing S *** rich unsaturated sites on HIFs,the photochemical reduction rate of CO_(2)over Co_(2)P NRs is 14.5 mmol h^(-1)g^(-1)for the production of CO within 3 *** analysis of electron transfer,bond lengths,bond angles and adsorption energies indicate that the CO_(2)molecules are more easily adsorbed and activated on the *** free energy calculations and d band theory demonstrate that the HIFs are conducive to reducing the formation energy barriers as well as improving the stability of the intermediate^(*)COOH,then enhancing the catalytic performance of CO_(2)reduction.

关键词： Co_(2)P High-index facet CO_(2)reduction Photocatalysis Electron transfer

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