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In situ thermoresponsive supramolecular assembly for switchable circularly polarized luminescence

Science China Chemistry 2024年第7期67卷 2362-2372页

作者： Menghan Pan Gong Zhang Haotian Ma Xiaoxiao cheng jieai Li wei Zhang State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Engineering Laboratory of Novel Functional Polymeric MaterialsSuzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China School of Chemical and Environmental Engineering Anhui Polytechnic UniversityWuhu 241000China

The dynamic regulation of circularly polarized luminescence(CPL)holds profound significance in various fields,such as highlevel information storage and encryption.Here we developed a chiral amphiphilic molecule,CPSB-GLU-PEG350(CGP),composed of aggregation-induced emission(AIE)chromophores(Z)-4-(1-cyano-2-phenylvinyl)benzoic acid(CPSB),a chiral linker Glutamic acid and polyethylene glycol(PEG)thermoresponsive segments.Within the self-assembled supramolecular system formed by CGP,we have achieved in-situ temperature-responsive chiral structures,facilitating the thermal control switch of the CPL signal.Molecular dynamics simulations demonstrate the distinct behaviors of AIE and PEG units during the temperature-variable assembly process.Furthermore,by co-assembling achiral dye molecules with CGP,we have expanded the color range of the temperature-responsive CPL assembly system in situ and confirmed the occurrence of circularly polarizedF?rster resonance energy transfer(C-FRET)phenomenon in this process,which successfully enriched the strategies for in-situ CPL control in aqueous phases.In addition,the contactless radiative energy transfer of CPL can also be realized in this system,exhibiting more flexible temperature regulation of the CPL signal.This study provides a convenient and universal strategy for the construction of dynamically smart chiroptical materials.

关键词： circularly polarized luminescence in-situ thermoresponsive supramolecular assembly energy transfer

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Trajectory planning for multi-robot coordinated towing system based on stability

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High Technology Letters 2024年第1期30卷 43-51页

作者：赵志刚 ZHAO Xiangtang wei Qizhe SU cheng MENG jiadong School of Mechanical Engineering Lanzhou Jiaotong UniversityLanzhou 730070P.R.China

Given the unconstrained characteristics of the multi-robot coordinated towing system,the rope can only provide a unidirectional constraint force to the suspended object,which leads to the weak ability of the system to resist external disturbances and makes it difficult to control the trajectory of the suspended object.Based on the kinematics and statics of the multi-robot coordinated towing system with fixed base,the dynamic model of the system is established by using the Newton-Euler equations and the Udwadia-Kalaba equations.To plan the trajectories with high stability and strong control,trajectory planning is performed by combining the dynamics and stability of the towing system.Based on the dynamic stability of the motion trajectory of the suspended object,the stability of the suspended object is effectively improved through online real-time planning and offline manual adjustment.The effectiveness of the proposed method is verified by comparing the motion stability of the suspended object before and after planning.The results provide a foundation for the motion planning and coordinated control of the towing system.

关键词： towing system unconstrained system trajectory planning dynamic stability

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Advanced Electrical Motors and Control Strategies for High-quality Servo Systems-A Comprehensive Review

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Chinese Journal of Electrical Engineering 2024年第1期10卷 63-85页

作者： Ming cheng jiawei Zhou wei Qian Bo Wang Chenchen Zhao Peng Han School of Electrical Engineering Southeast UniversityNanjing 210096China ESTUN Automation Co. Ltd.Nanjing 211106China Ansys Inc.San JoseCA 95134USA

Recent technological advancements have propelled remarkable progress in servo systems,resulting in their extensive utilization across various high-end applications.A comprehensive review of high-quality servo system technologies,focusing specifically on electrical motor topologies and control strategies is presented.In terms of motor topology,this study outlines the mainstream servo motors used across different periods,as well as the latest theories and technologies surrounding contemporary servo motors.In terms of control strategies,two well-established approaches are presented:field-oriented control and direct torque control.Additionally,it discusses advanced control strategies employed in servo systems,such as model predictive control(MPC)and fault tolerance control,among others.

关键词： Servo system servo motor control strategy magnetic field modulation

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Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi_(2)Te_(4)

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Chinese Physics B 2024年第4期33卷 160-171页

作者：卢倬成冯济 International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China

A Weyl node is characterized by its chirality and tilt.We develop a theory of how nth-order nonlinear optical conductivity behaves under transformations of anisotropic tensor and tilt, which clarifies how chirality-dependent and-independent parts of optical conductivity transform under the reversal of tilt and chirality.Built on this theory, we propose ferromagnetic Mn Bi2Te4as a magnetoelectrically regulated, terahertz optical device, by magnetoelectrically switching the chiralitydependent and-independent DC photocurrents.These results are useful for creating nonlinear optical devices based on the topological Weyl semimetals.

关键词： nonlinear optical response topological Weyl semimetals chiral anomaly

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Acetaminophen overdose-induced acute liver injury can be alleviated by static magnetic field

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Zoological Research 2024年第3期45卷 478-490页

作者： Han-Xiao Chen Xin-Yu Wang Biao Yu Chuan-Lin Feng Guo-Feng cheng Lei Zhang Jun-Jun Wang Ying Wang Ruo-Wen Guo Xin-Miao ji Wen-jing Xie wei-Li Chen Chao Song Xin Zhang CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology High Magnetic Field LaboratoryHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhui 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui 230026China Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230601China

Acetaminophen(APAP),the most frequently used mild analgesic and antipyretic drug worldwide,is implicated in causing 46%of all acute liver failures in the USA and between 40%and 70%in Europe.The predominant pharmacological intervention approved for mitigating such overdose is the antioxidant N-acetylcysteine(NAC);however,its efficacy is limited in cases of advanced liver injury or when administered at a late stage.In the current study,we discovered that treatment with a moderate intensity static magnetic field(SMF)notably reduced the mortality rate in mice subjected to high-dose APAP from 40%to 0%,proving effective at both the initial liver injury stage and the subsequent recovery stage.During the early phase of liver injury,SMF markedly reduced APAPinduced oxidative stress,free radicals,and liver damage,resulting in a reduction in multiple oxidative stress markers and an increase in the antioxidant glutathione(GSH).During the later stage of liver recovery,application of vertically downward SMF increased DNA synthesis and hepatocyte proliferation.Moreover,the combination of NAC and SMF significantly mitigated liver damage induced by high-dose APAP and increased liver recovery,even 24 h post overdose,when the effectiveness of NAC alone substantially declines.Overall,this study provides a noninvasive non-pharmaceutical tool that offers dual benefits in the injury and repair stages following APAP overdose.Of note,this tool can work as an alternative to or in combination with NAC to prevent or minimize liver damage induced by APAP,and potentially other toxic overdoses.

关键词： Acetaminophen Acute liver injury Static magnetic fields Oxidative stress DNA synthesis

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Efficacy and safety of extracorporeal shock wave therapy combined with sodium hyaluronate in treatment of knee osteoarthritis:a systematic review and Meta-analysis

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Journal of Traditional Chinese Medicine 2024年第2期44卷 243-250页

作者： ZHOU Mingwang DONG Zhuanli wei Changhao FENG Lufang WANG Xiaoping LIU Haiping ji Xing YANG Kehu LI Shenghua Department of Orthopaedics Gansu Provincial Hospital of Traditional Chinese MedicineLanzhou 730050China Department of Quality Management Lanzhou Petrochemical General HospitalLanzhou 730050China Department of Orthopaedics Lanzhou Petrochemical General HospitalLanzhou 730050China Evidence-Based Social Science Research Center School of Public HealthLanzhou UniversityLanzhou730000China Evidence-Based Medicine Center School of Basic Medical SciencesLanzhou UniversityLanzhou 730000China Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province Lanzhou 730000China Center for Translational Medicine Gansu Provincial Hospital of Traditional Chinese MedicineLanzhou 730050China Department of Orthopaedics Gansu Provincial Hospital of Traditional Chinese MedicineLanzhou 730000China

OBJECTIVE:To assess the efficacy and safety of extracorporeal shockwave therapy(ESWT)combined with sodium hyaluronate(HA)for the treatment of knee osteoarthritis(KOA).METHODS:PubM ed,Embase,the Cochrane Library,Web of Science,China National Knowledge Infrastructure,Wanfang database,China Science and Technology Journal Database,and SinoMed were searched from inception to July 2020.The quality of the randomized controlled trials was evaluated independently by two reviewers according to the criteria in the Cochrane Collaboration for Systematic Reviews.The identified articles were then screened individually using EndnoteX9 for eligibility in this Meta-analysis.The heterogeneity among the articles was evaluated using I2.RESULTS:A total of 17 studies,comprising 2000 individuals,were included in this Meta-analysis.The results showed that a significant improvement was observed in knee pain and function based on the clinical efficacy of ESWT combined with HA.Statistical analysis of clinical efficacy showed that[relative risk(RR)=1.21,95%confidence interval(CI)(1.12,1.30),P<0.01].Statistical analysis of visual analog scale showed that[standardized mean difference(SMD)=-2.84,95%CI(-4.01,-1.66),P<0.01].Western Ontario and McMaster University osteoarthritis index statistical analysis showed that[SMD=-1.57,95%CI(-2.52,-0.61),P<0.01].Lysholm score statistical analysis showed that[SMD=1.71,95%CI(0.98,2.44),P<0.01].In addition,only minor side effects,such as redness and swelling of the skin,were observed.CONCLUSIONS:Medium to low quality evidence showed that ESWT combined with HA offers an inexpensive,welltolerated,safe,and effective method to improve pain and functionality in patients with KOA.However,tightly controlled,randomized,large multicenter trials are warranted to validate the current findings.

关键词： osteoarthritis knee randomized controlled trial extracorporeal shockwave therapy hyaluronic acid Meta-analysis

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Sesamol: a novel quorum sensing inhibitor and colistin accelerator against Pseudomonas aeruginosa

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Food Science and Human Wellness 2024年

作者： Peng-cheng ji Kun-Yuan Yin Yue jiang Yu-Lu Sun Wen-Qi Luo jin-wei Zhou School of Food and Biological Engineering Xuzhou University of Technology

We assessed the quorum sensing (QS) inhibitory impact of sesamol against the foodborne bacterium Pseudomonas aeruginosa. At concentrations ranging from 50 to 200 μg/mL， sesamol significantly inhibited the production of virulence factors such as protease， elastase， pyocyanin， rhamnolipid， and chemotaxis， and improved the susceptibility of bacterial and biofilm cells to colistin. Integrated transcriptomics， metabolomics， and docking analyses indicated that exposure to sesamol destroyed the QS system and down regulated the expressions of genes encoding virulence and antioxidant enzymes. The downregulation of genes encoding antioxidant enzymes intensified oxidative stress， as demonstrated by the enhancement of reactive oxygen species (ROS) and H2O2. The enhanced oxidative stress changed the components of the cell membrane， improved its permeability， and ultimately enhanced the susceptibility of bacterial and biofilm cells to colistin. Moreover， exposure to sesamol also led to the disorder of amino acid metabolism and energy metabolism， eventually attenuating the pathogenicity of P. aeruginosa. These findings indicated that sesamol can function as a potent anti-virulence agent to defend against food spoilage caused by P. aeruginosa.

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Core competencies and perceived training needs of nurses in the background of Internet plus nursing service:a qualitative descriptive study

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Frontiers of Nursing 2024年第2期11卷 181-190页

作者： Qiang-Hui-Zi Zhang wei-wei Liu Zhen-Zhen cheng School of Nursing Capital Medical UniversityBeijing 100069China Department of Orthopedics Peking University Shougang HospitalBeijing 100043China

Background:The Internet plus nursing service program is being piloted in China,which has become a new home nursing service model led by nurses.To enable safe and effective homecare service delivery,nurses working in the program need a high level of competency.However,the content of these core competencies and the training needs of nurses for Internet plus nursing services are still unknown.Aim:To describe nurses’perceptions of core competencies and training needs to work in the Internet plus nursing service program,thereby providing a reference for the development of training programs.Methods:A qualitative descriptive study using semi-structured interviews was conducted on 15 nurses with experience of working in the Internet plus nursing service program.Interviews were audio-recorded and transcribed verbatim,and the data were analyzed using thematic analysis.Results:Core competencies involved comprehensive assessment competence,direct care practice competence,health education and consulting competence,risk estimation and response competence,and communication competence.Training needs involved complex operational items,knowledge of chronic disease management,professional communication,risk identification and response,nursing standards,norms,and procedures,and utilization of information technology.Conclusions:The training system may be developed based on nurses’core competencies and their training needs to promote professional development of the Internet plus nursing service.

关键词： core competence Internet plus nursing service nursing qualitative study training needs

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Long non-coding RNA BANCR promotes pancreatic cancer lymphangiogenesis and lymphatic metastasis by regulating the HIF-1α/VEGF-C/VEGFR-3 pathway via miR-143-5p

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Genes & Diseases 2024年第4期11卷 57-60页

作者： Shaolong Hao Yu ji weixuan Pan Hao Sun Fang Nie Jonathan Ray Warren Yuchuan Ding wei Han Department of General Surgery Beijing Luhe HospitalCapital Medical UniversityTongzhouBeijing 101149China Department of Central Laboratory Beijing Luhe HospitalCapital Medical UniversityTongzhouBeijing 101149China Department of Neurosurgery Wayne State University School of MedicineJohn D.Dingell VA Medical CenterDetroitMI 48201USA

Pancreatic cancer is one of the most aggressive malignant tumors of the digestive system.Lymph node metastasis(LNM),as the main way of invasion and metastasis,can occur in the early stage of pancreatic cancer and be considered the most important factor affecting the clinical treatment and prognosis of patients with pancreatic cancer.

关键词： metastasis cancer invasion

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Rapid detection of nanoplastic particles by a luminescent Tb-based coordination polymer

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Chinese Chemical Letters 2024年第5期35卷 529-533页

作者： Tiankai Sun Hui Min Zongsu Han Liang Wang Peng cheng wei Shi Department of Chemistry College of ChemistryNankai UniversityTianjin 300071China State Key Laboratory of Separation Membranes and Membrane Processes School of Environmental Science and EngineeringTiangong UniversityTianjin 300387China Key Laboratory of Advanced Energy Materials Chemistry(MOE) Frontiers Science Center for New Organic Matter and Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Nanoplastics(NPs)in aqueous environment have become a category of emerging pollutants on account of their potential risks to both human health and environment.The detection of NPs is a great challenge due to the lack of sensitive and selective sensing materials with fast response time and wide sensing range of particle sizes.Herein,a Tb-based coordination polymer has been synthesized for luminescent detection of nanopolystyrene with different particle sizes in aqueous solutions,showing a low limit of detection,fast response time within 10 s and high selectivity in the presence of other plastics.The“turn-on”sensing mechanism is studied in detail.This work provides a facile method for the fast detection of NPs.

关键词： Coordination polymer Nano polystyrene Luminescent detection Sensing mechanism Water safety

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