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First-principles study of the relationship between the formation of single atom catalysts and lattice thermal conductivity

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Chinese Chemical Letters 2024年第6期35卷 502-506页

作者： Chaozheng He Pei Shi Donglin Pang Zhanying zhang Long Lin Yingchun Ding Department of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252059China Henan Key Laboratory of Materials on Deep-Earth Engineering School of Materials Science and EngineeringHenan Polytechnic UniversityJiaozuo 454000China School of Materials Science and Engineering Henan Polytechnic UniversityJiaozuo 454000China Department of Basic Medicine North Sichuan Medical CollegeNanchong 637000China

Single atom catalysts(SACs)have been in the forefront of catalysts research because of their high efficiency and low cost and provide new ideas for development of renewable energy conversion and storage ***,the relationship between the intrinsic properties of materials such as lattice thermal conductivity and catalysis remains to be *** this work,the lattice thermal conductivity of BN and graphene was calculated by Sheng *** addition,the adsorption properties of 3d-TM(TM=V,Cr,Mn,Fe,Co,Ni)on BN and graphene were investigated using first-principles methods,and it was found that Ni atom can form relatively stable SACs compared to other *** molecular dynamics(MD)simulation and migration barrier of Ni loaded on BN and graphene were *** study found that graphene has higher thermal conductivity and is easier to form SACs than BN,but the SACs formed on BN surface have higher thermodynamic stability.

关键词： First-principles calculation Thermal conductivity Single atom catalysts Graphene BN

Transcriptomic analysis identifies the S100 calcium-binding protein β subunit(S100B)and intercellular adhesion molecule-1(ICAM-1)as potential diagnostic biomarkers for acute cerebral infarction

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Genes & Diseases 2024年第1期11卷 46-48页

作者： Dan Cheng Yushuo Wang Jingna Li Yulan Yao Simiao zhang Yunliang Wang Department of Neurology Second Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450014China School of Medicine Medical Sciences and Nutrition University of AberdeenAberdeen AB252ZDUK Department of Neurology The 960th Hospital of PLAZiboShandong 255300China

Due to its high mortality,disability,and recurrence rates,cerebral infarction has a serious impact on the economy and is a physical and psychological burden on patients.1 There is a huge unmet medical need for biomarkers to predict acute cerebral *** have shown that the ischemic damage to neurons,myelin,and glia caused by a stroke leads to the release of the S100 calcium-binding protein beta subunit(S100B)through the blood-brain barrier into the systemic circulation,resulting in an increase in the level of S100B in the peripheral blood.

关键词： S100B cerebral infarction

Fuzzy-Inverse-Model-Based Networked Tracking Control Frameworks of Time-Varying Signals

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1708-1710页

作者： Shiwen Tong Dianwei Qian Keya Yuan Dexin Liu Yuan Li Jiancheng zhang the College of Robotics Beijing Union UniversityBeijing 100101China the School of Control and Computer Engineering North China Electric Power UniversityBeijing 102206China

Dear Editor,Tracking control in networked environment is a very challenging problem due to the contradiction of rapid response to the time-varying signal and the inevitable delay introduced by networks. This letter has proposed several fuzzy-inverse-model-based network tracking control frameworks which are helpful in handling the system with nonlinear dynamics and uncertainties.

关键词： contradiction letter inverse

Merging non-covalent and covalent crosslinking:En route to single chain nanoparticles

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Chinese Chemical Letters 2024年第6期35卷 307-311页

作者： Yifei zhang Yuncong Xue Laiwei Gao Rui Liao Feng Wang Fei Wang CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Department of Neurosurgical The First Affiliated Hospital of University of Science and Technology of ChinaDivision of Life Sciences and MedicineHefei 230026China

Single-chain nanoparticles represent an emerging class of nanomaterials designed to mimic protein's folding *** covalent crosslinking toward the formation of single-chain nanoparticles encounters complex energy landscapes,leading to the potential occurrence of misfolding *** noncovalent crosslinking can circumvent this issue,the resulting single-chain nanoparticles exhibit lower structural stability compared to their covalently crosslinked *** this study,we present a novel approach for the synthesis of single-chain nanoparticles,achieved through the combination of non-covalent and covalent intramolecular *** grafted onto the linear polymer form intrachain non-covalent stacks aided by hydrogen bonds,leading to the formation of non-covalently crosslinked single-chain *** nanoparticles undergo conversion to covalently crosslinked nanostructures through subsequent photo-irradiation using[2+2]photocycloaddition,a process facilitated by the supramolecular confinement ***,the resulting single-chain nanoparticles demonstrate both intrachain folding efficiency and substantial stability,offering significant potential for advancing applications across diverse fields.

关键词： Single chain nanoparticles Intrachain folding Supramolecular confinement Cyanostilbenes [2+2]photocycloaddition

Efficacy and safety of electroacupuncture for insomnia:A systematic review and meta-analysis

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Journal of Integrative Medicine 2024年第4期22卷 459-472页

作者： Han-yu Xu Lin-na Wu Yuan zhang Te Ba Xiao-feng Zhao Acupuncture and Moxibustion Department First Teaching Hospital of Tianjin University of Traditional Chinese MedicineTianjin 300193China National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion Tianjin 300193China

Background:Electroacupuncture is often used to treat ***:To evaluate the efficacy and safety of electroacupuncture for *** strategy:Databases including PubMed,Cochrane Library,Embase,Web of Science,Chinese Biomedical Literature Database,China National Knowledge Infrastructure,Wanfang Data and VIP Fulltext e-Journals Database were searched up to January 15,*** criteria:Randomized clinical trials were included if they compared the clinical efficacy and safety of electroacupuncture with sham acupuncture,no treatment or usual care (UC) and general *** extraction and analysis:The full texts of the studies were reviewed to remove ineligible *** extracted data included authors,publication year,diagnostic criteria,sample size,population characteristics,interventions and *** above steps were performed independently by two reviewers and the data were cross ***15.0 software was used to analyze the extracted outcome *** continuous data (Pittsburgh Sleep Quality Index[PSQI]score and Insomnia Severity Index score),weighted mean difference (WMD) was calculated and 95% confidence interval (CI) was reported when the same scale was *** dichotomous variables (clinical response rate and adverse events),a meta-analysis was performed using risk ratio (RR) as the effect ***:Thirty-one trials with 2226 subjects were *** meta-analysis suggested that electroacupuncture was more effective in improving insomnia compared with the control group (sham acupuncture,no treatment,UC and general acupuncture)(RR=1.21;95 CI:[1.16,1.27]),significantly reducing the PSQI score in insomnia patients after treatment and at follow-up (WMD=-3.23;95%CI:[-4.29,-2.17];P<0.001).There was no significant difference in the incidence of adverse events between the EA and control groups (sham acupuncture and no treatment or ***=1.48;95%CI:[0.91,2.40];P=0.117).In addition,the regression results revealed t

关键词： Electroacupuncture Insomnia Systematic review Meta-analysis

The modulatory effect of oolong tea polyphenols on intestinal flora and hypothalamus gene expression in a circadian rhythm disturbance mouse model

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Food Science and Human Wellness 2024年第2期13卷 748-764页

作者： Ruonan Yan Chi-Tang Ho Yanan Liu Shengnan Zhan Zufang Wu Xin zhang Department of Food Science and Engineering Ningbo UniversityNingbo 315211China Department of Food Science Rutgers UniversityNew BrunswickNew Jersey 08901USA

The interaction between host circadian rhythm and gut microbes through the gut-brain axis provides new clues for tea polyphenols to improve host *** present research showed that oolong tea polyphenols(OTP)improved the structural disorder of the intestinal flora caused by continuous darkness,thereby modulating the production of metabolites related to pyruvate metabolism,glycolysis/gluconeogenesis,and tryptophan metabolism to alleviate the steady-state *** fecal microbiota transplantation from the OTP group,the single-cell transcriptomic analysis revealed that OTP significantly increased the number of hypothalamus cell clusters,up-regulated the number of astrocytes and fibroblasts,and enhanced the expression of circadian rhythm genes Cry2,Per3,Bhlhe41,Nr1d1,Nr1d2,Dbp and Rorb in hypothalamic *** results confirmed that OTP can actively improve the intestinal environmental state as well as internal/peripheral circadian rhythm disorders and cognitive impairment,with potential prebiotic functional characteristics to notably contribute to host health.

关键词： Gut microbiota Circadian rhythm Oolong tea polyphenols Single-cell sequencing Metabolism

Spatiotemporal variations of parameters of internal solitary waves in the northern South China Sea

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Journal of Oceanology and Limnology 2024年第2期42卷 421-438页

作者： Yu’ang LIU Yifei JIANG Xiaojiang zhang Zhiyuan WANG Yu CAO Huizan WANG College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410000China

The dynamic parameters for internal solitary waves(ISWs)derived from the extended Korteweg-de Vries(eKdV)equation play an important role in the understanding and prediction of *** spatiotemporal variations of the dynamic parameters of the ISWs in the northern South China Sea(SCS)were studied based on the reanalysis of long-term temperature and salinity *** results for spectrum analysis show that there are definite geographical differences for the periodic variation of the parameters:in shallow water,all parameters vary with a wave period of one year,while in deep water wave components of the parameters at other frequencies *** wavelet analysis,the wavelet power spectral densities in deep water exhibited an inter-annual variation *** example,the wave component of the dispersion coefficient with a wave period of about half a year reached its power peak once every two *** on previous work,this inter-annual variation pattern was deduced to be caused by dynamic *** further work on the regulatory mechanisms,empirical orthogonal function(EOF)decomposition was *** was found that the modes of the dispersion coefficient have different geographical distributions,explaining the reason why the wave components in different frequencies appeared in different *** numerical simulation results confirm that the variations in the parameters of the ISWs derived from the eKdV equation could affect the waveforms significantly because of changes in the polarity of the ***,the periodic variations of the dynamic parameters are related to the geographical location because of dynamic processes operating.

关键词： internal solitary waves(ISWs) dynamic parameters eKdV equation spatiotemporal variation polarity empirical orthogonal function(EOF)decomposition

Deformation of Rigid Conjugate Self-dual Galois Representations

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1599-1644页

作者： Yi Feng LIU Yi Chao TIAN Liang XIAO Wei zhang Xin Wen ZHU Institute for Advanced Study in Mathematics Zhejiang UniversityHangzhou 310058P.R.China Morningside Center of Mathematics AMSSChinese Academy of SciencesBeijing 100190P.R.China New Cornerstone Lab Beijing International Center for Mathematical ResearchPeking Ui Beijing 100871P.R.China Department of Mathematics Massachusetts Institute of TechnologyCambridge MA 02139United States Department of Mathematics Stanford UniversityStanfordCA 94305United States

In this article,we study deformations of conjugate self-dual Galois *** study is ***,we prove an R=T type theorem for a conjugate self-dual Galois representation with coefficients in a finite field,satisfying a certain property called ***,we study the rigidity property for the family of residue Galois representations attached to a symmetric power of an elliptic curve,as well as to a regular algebraic conjugate self-dual cuspidal representation.

关键词： Galois deformation rigid conjugate self-dual Galois representations

Reasonable Designing of Free-standing MnO_(2)/Graphene Composite Membrane for Lithium-ion Storage

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Chemical Research in Chinese Universities 2024年第3期40卷 508-512页

作者： SHI Junye YU Chenxi ZOU Zewei ZHENG Shumin zhang Xing WANG Bao Institute of Refrigeration and Cryogenics Shanghai Jiao Tong University Shanghai 200433P.R.China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China Key Laboratory of Biopharmaceutical Preparation and Delivery Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China CAS Key Laboratory of Molecular Nanostucture and Nanotechnology Institute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China

Free-standing membranes show extraordinary promise in energy storage applications,however are usually limited by low capacity and poor rate ***,we assembled a series of free-standing MnO_(2)/GO composite membranes with ZIF67 particles embedded between two-dimensional(2D)*** particle size of ZIF67 can be adjusted to achieve tunable interlayer *** lithium storage performance of the as-obtained membranes with different interlayer spaces was systematically *** MnO_(2)/GO composite membrane embedded with ZIF67 particles with an average diameter of 30 nm(denoted as MnO_(2)/nZIF67/GO)delivers a good long cycling performance,and it retains a capacity of 340.7 mA·h·g^(−1) after 400 cycles at 0.05 A/*** MnO_(2)/GO composite membrane embedded with ZIF67 particles with an average diameter of 500 nm(denoted as MnO_(2)/mZIF67/GO)exhibits good rate *** of the size of the ZIF67 particles,the performance of the membrane containing ZIF67 is significantly better than that of the membrane without ZIF67,indicating that the ZIF67 particles can enhance the lithium storage performance of the assembled *** work provides a method to fabricate a free-standing membrane for lithium storage with tunable electrochemical performance.

关键词： Lithium-ion battery Membrane Free-standing ZIF67