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Effects of different frequencies of repetitive transcranial magnetic stimulation on the recovery of upper limb motor dysfunction in patients with subacute cerebral infarction

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Neural Regeneration Research 2016年第10期11卷 1584-1590页

作者： Jiang Li Xiang-min Meng ru-yi Li ru Zhang Zheng Zhang yi-feng Du Shandong Provincial Hospital of Shandong University Jinan Shandong Province China Affiliated Hospital of Qingdao University Qingdao Shandong Province China

Studies have confirmed that low-frequency repetitive transcranial magnetic stimulation can decrease the activity of cortical neurons, and high-frequency repetitive transcranial magnetic stimulation can increase the excitability of cortical neurons. However, there are few studies concerning the use of different frequencies of repetitive transcranial magnetic stimulation on the recovery of upper-limb motor function after cerebral infarction. We hypothesized that different frequencies of repetitive transcranial magnetic stimulation in patients with cerebral infarction would produce different effects on the recovery of upper-limb motor function. This study enrolled 127 patients with upper-limb dysfunction during the subacute phase of cerebral infarction. These patients were randomly assigned to three groups. The low-frequency group comprised 42 patients who were treated with 1 Hz repetitive transcranial magnetic stimulation on the contralateral hemisphere primary motor cortex （M1）. The high-frequency group comprised 43 patients who were treated with 10 Hz repetitive transcranial magnetic stimulation on ipsilateral M1. Finally, the sham group comprised 42 patients who were treated with 10 Hz of false stimulation on ipsilateral M1. A total of 135 seconds of stimulation was applied in the sham group and high-frequency group. At 2 weeks after treatment, cortical latency of motor-evoked potentials and central motor conduction time were significantly lower compared with before treatment. Moreover, motor function scores were significantly improved. The above indices for the low- and high-frequency groups were significantly different compared with the sham group. However, there was no significant difference between the low- and high-frequency groups. The results show that low- and high-frequency repetitive transcranial magnetic stimulation can similarly improve upper-limb motor function in patients with cerebral infarction.

关键词： nerve regeneration brain injury repetitive transcranial magnetic stimulation cerebral infarction low-frequency stimulation high-frequency stimulation upper-limb motor function cerebral cortex stroke rehabilitation motor-evoked potential central motor conductiontime primary motor cortex neuroplasticity neural reorganization neural regeneration

基于石墨烯电极TCNQ分子结热/电输运性质理论研究

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原子与分子物理学报 2025年第3期42卷 135-140页

作者：刘仪伟邱乙峰张蓓新疆大学物理科学与技术学院乌鲁木齐830046

本文采用密度泛函理论和非格林平衡函数,对基于石墨烯电极的7,7,8,8-四氰基苯醌二甲烷(Tetracyanoquinodimethane,TCNQ)分子结热/电输运性质进行系统研究.研究结果表明:随着中心TCNQ分子个数的增加,声子透射系数明显降低,即声子透射行... 详细信息

本文采用密度泛函理论和非格林平衡函数,对基于石墨烯电极的7,7,8,8-四氰基苯醌二甲烷(Tetracyanoquinodimethane,TCNQ)分子结热/电输运性质进行系统研究.研究结果表明:随着中心TCNQ分子个数的增加,声子透射系数明显降低,即声子透射行为受到极大抑制.与此同时,电子透射系数也有一定程度的减小.在热/电参数的协同作用下,伴随分子数量的增加分子结热电转换性能呈上升趋势,1TCNQ热电优值(ZT)为0.016,而2TCNQ则上升了1个数量级,ZT值达到0.11.最后,我们对分子结依赖于分子结构个数的自旋输运性质进行研究,发现TCNQ分子结具有显著的自旋过滤效应,其过滤能力随着TCNQ分子数量的增加而增加.该工作可为实验制备分子热电器件提供理论依据和数据支持.

关键词：锯齿状石墨烯纳米带 TCNQ分子自旋输运性质自旋过滤效应

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Regulating Ni site in NiV LDH for efficient electrocatalytic production of formate and hydrogen by glycerol electrolysis

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Rare Metals 2022年第5期41卷 1583-1594页

作者： Lin Dong Guan-ru Chang yi feng Xian-Zhi Yao Xin-Yao Yu Key Laboratory of Structure and Functional Regulation of Hybrid Materials Institutes of Physical Science and Information TechnologyAnhui UniversityMinistry of Education.Hefei 230601China School of Chemistry and Chemical Engineering Huangshan UniversityHuangshan 245041China Department of Polymer Materials and Engineering Academy of Chemical EngineeringHebei University of TechnologyTianjin 300130China Ningbo Research Institute of Ecological and Environmental Sciences Ningbo 315000China Energy Materials and Devices Key Laboratory of Anhui Province for Photoelectric Conversion Anhui UniversityHefei 230601China

Energy-saving glycerol electrolysis with lower potential than water spitting endows a promising way for the concurrent production of value-added formate and high-purity hydrogen. However, there is still lack of efficient electrocatalysts at both anode and cathode for glycerol electrolysis. Herein, we report the activation of Ni site in NiV layered double hydroxide(LDH) by electrochemical and N_(2)/H_(2) plasma regulations for boosting the activity of glycerol oxidation reaction(GOR) and hydrogen evolution reaction(HER), respectively. Specifically, boosted GOR performance with a low overpotential(1.23 V at 10 mA·cm^(-2)) and a high Faradic efficiency(94%) is demonstrated by electrochemically regulated NiV LDH(ENiV LDH) with elevated valence state of Ni site. In situ Raman spectrum reveals the generation of Ni(Ⅲ) species by electrochemical regulation, and the highly active Ni(Ⅲ)can be regenerated with the process of electrochemical oxidation. Additionally, the possible reaction pathway is speculated based on the in situ Fourier transform infrared spectroscopy(FTIR) and high-performance liquid chromatography results. The plasma-regulated NiV LDH(PNiV LDH) with lower valence state of Ni site exhibits outstanding HER activity, displaying a low overpotential of 45 m V to deliver 10 mA·cm^(-2).When employing E-NiV LDH and P-NiV LDH as anode and cathode electrocatalyst, respectively, the assembled electrolyzer merely needs 1.25 V to achieve 10 m A·cm^(-2) for simultaneous production of formate and hydrogen, demonstrating remarkable 320 mV of lower potential than water electrolysis.

关键词： Glycerol electrolysis Glycerol oxidation reaction Hydrogen evolution reaction NiV LDH Formate

ru doping triggering reconstruction of cobalt phosphide for coupling glycerol electrooxidation with seawater electrolysis

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Journal of Energy Chemistry 2025年第1期100卷 317-326页

作者： Binglu Deng Jie Shen Jinxing Lu Chuqiang Huang Zhuoyuan Chen feng Peng Yunpeng Liu School of Materials Science and Hydrogen Energy Foshan University School of Chemistry and Chemical Engineering Guangzhou University Guangdong Key Laboratory for Hydrogen Energy Technologies

Seawater electrolysis is a promising approach for sustainable energy without relying on precious ***,the large-scale seawater electrolysis is hindered by low catalytic efficiency and severe anode corrosion caused by the harmful *** contrast to the oxygen evolution reaction （OER）and chlorin ion oxidation reaction （ClOR）,glycerol oxidation reaction （GOR） is more thermodynamically and kinetically favorable ***,a ru doping cobalt phosphide （ru-CoP2） is proposed as a robust bifunctional electrocatalyst for seawater electrolysis and GOR,for the concurrent productions of hydrogen and value-added *** in situ and ex situ characterization analyses demonstrated that ru doping featured in the dynamic reconstruction process from ru-CoP2to ru-CoOOH,accounting for the superior GOR *** coupling GOR with hydrogen evolution was realized by employing ru-CoP2as both anode and cathode,requiring only a low voltage of 1.43 V at 100 mA cm-2,which was 250 m V lower than that in alkaline *** work guides the design of bifunctional electrocatalysts for energy-efficient seawater electrolysis coupled with biomass resource upcycling.

关键词： Glycerol electrooxidation Hydrogen evolution ru doping Cobalt phosphide Bifunctional electrocatalysts

Hollow carbon spheres and their noble metal-free hybrids in catalysis

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Frontiers of Chemical Science and Engineering 2021年第6期15卷 1380-1407页

作者： Xiang-Hui Yu Jin-Long yi ru-Liang Zhang feng-Yun Wang Lei Liu School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao266590China College of Physics and State Key Laboratory of Bio Fibers and Eco Textiles Qingdao UniversityQingdao 266071China

Hollow carbon spheres have garnered great interest owing to their high surface area,large surface-tovolume ratio and reduced transmission ***,we overview hollow carbon sphere-based materials and their noble metal-free hybrids in ***,we summarize the key fabrication techniques for various kinds of hollow carbon spheres,with a particular emphasis on controlling pore structure and surface morphology,and then heterogeneous doping as well as their metal-free/containing hybrids are presented;next,possible applications for non-noble metal/hollow carbon sphere hybrids in the area of energy-related catalysis,including oxygen reduction reaction,hydrogen evolution reaction,oxygen evolution reaction,water splitting,rechargeable Zn-air batteries and pollutant degradation are discussed;finally,we introduce the various challenges and opportunities offered by hollow carbon spheres from the perspective of synthesis and catalysis.

关键词： hollow carbon spheres functionalization noble metal-free catalysis

Effect of vegetation on soil bacteria and their potential functions for ecological restoration in the Hulun Buir Sandy Land,China

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Journal of Arid Land 2020年第3期12卷 473-494页

作者： YAN ru feng Wei Yanchi Research Station School of Soil and Water ConservationBeijing Forestry UniversityBeijing 100083China Engineering Research Center of Forestry Ecological Engineering of the Ministry of Education Beijing Forestry UniversityBeijing 100083China

To date,much of research on revegetation has focused on soil microorganisms due to their contributions in the formation of soil and soil remediation ***,little is known about the soil bacteria and their functions respond to the diverse vegetational types in the process of vegetation *** of dominated vegetation,i.e.,Artemisia halodendron Turcz Ex Bess,Caragana microphylla Lam.,Hedysarum fruticosum *** Pinus sylvestris *** bacterial community structures and their potential functions in the Hulun Buir Sandy Land,China were determined using high-throughput 16S rRNA gene sequencing and phylogenetic investigation of communities by reconstruction of unobserved states(PICruSt)in *** the dominant phyla of soil bacterial community among different types of vegetation,including Proteobacteria,Actinobacteria,Acidobacteria,Bacteroidetes and Firmicutes,were similar,the relative abundance of these dominant groups significantly differed,indicating that different types of vegetation might result in variations in the composition of soil bacterial *** addition,functional genes of bacterial populations were similar among different types of vegetation,whereas its relative abundance was significantly *** carbon fixation genes showed a high relative abundance in ***,*** carbon decomposition genes in ***,suggesting the variations in carbon cycling potential of different types of *** of assimilatory nitrate reduction genes was the highest in ***,*** nitrate reduction and nitrate reductase genes in ***,indicating higher nitrogen gasification loss and lower nitrogen utilization gene functions in *** structures and functional genes of soil bacterial community showed marked sensitivities to different plant species,presenting the potentials for regulating soil carbon and nitrogen cycling.

关键词： bacterial taxonomic composition functional gene vegetational type soil carbon and nitrogen 16S rRNA

植物源外泌体样纳米囊泡刺激成骨细胞、抑制破骨细胞并促进成骨

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中国组织工程研究 2025年第31期29卷 6765-6771页

作者：药文鑫王毅蔡林冯晓波武汉大学中南医院疼痛科湖北省武汉市430071 武汉大学中南医院脊柱与骨肿瘤科湖北省武汉市430071

背景:骨质疏松症易引发病理性骨折且严重影响患者的生活质量,植物源外泌体样纳米囊泡在调节骨质疏松症骨平衡方面发挥着重要作用。目的:综述不同植物源外泌体样纳米囊泡在骨质疏松症治疗中的研究现状与展望。方法:通过计算机在PubMed、W... 详细信息

背景:骨质疏松症易引发病理性骨折且严重影响患者的生活质量,植物源外泌体样纳米囊泡在调节骨质疏松症骨平衡方面发挥着重要作用。目的:综述不同植物源外泌体样纳米囊泡在骨质疏松症治疗中的研究现状与展望。方法:通过计算机在PubMed、Web of Science、中国知网中检索1995年1月至2024年3月发表的相关文献,以“osteoporosis,plant-derived exosome-like nanovesicles,exosomes,osteoblasts,osteoclasts”为英文检索词,以“骨质疏松症,植物源外泌体样纳米囊泡,外泌体,成骨细胞,破骨细胞”为中文检索词,最终纳入53篇文献进行分析。结果与结论:植物源外泌体样纳米囊泡具有生物相容性、低毒性和天然靶向性等优点,这些特性不仅确保了其在体内的稳定存在与有效作用,还避免了不必要的免疫反应,为长期治疗策略的设计奠定了基础。植物源外泌体样纳米囊泡可以通过刺激成骨细胞增殖、抑制破骨细胞分化以及促进成骨-抑制破骨双重作用抗骨质疏松症;此外,部分植物源外泌体样纳米囊泡因具有骨靶向性,未来或将成为新型示踪靶标和治疗方案广泛应用于骨质疏松症治疗过程中。

关键词：骨质疏松症植物源性外泌体样纳米囊泡外泌体成骨细胞破骨细胞工程化外泌体

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Copper-coated Porous Polyimide as Ultralight and Safe Current Collectors for Advanced LIBs

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Chinese Journal of Polymer Science 2024年第4期42卷 521-531页

作者： Cun-Sheng Liu Jun-Qi Hu Ting-Ting Mao Song-yi Liao ru-Ming feng yi-Dong Liu Yong-Gang Min School of Materials and Energy Guangdong University of TechnologyGuangzhou510006China College of Chemistry and Chemical Engineering Zhongkai University of Agriculture and EngineeringGuangzhou510225China Shanwei Branch of Advanced Energy Science and Technology Guangdong Laboratory Shanwei516600China

Metallic copper is widely used as current collector(CC) for graphite anode of lithium-ion batteries(LIBs) due to its high electrical conductivity and electrochemical stability. However, the large volume density of commercial copper foil(~8.9 g·cm^(-3)) limits the increase of energy density of battery. Here, copper-coated porous polyimide(Cu@PPI) was prepared by vacuum evaporation as collector for the graphite anode. The sandwich structure connects the copper metal on both sides of the collector with excellent electrical conductivity. Compared to commercial Cu foil, Cu@PPI has lighter mass(≤3.9 mg for disc of 12 mm diameter versus 9.9 mg of ~10 μm Cu foil) and lower volume density(≤3.3 g·cm^(-3)). In addition, the porous structure allows of better adhesion of reactive substances and electrochemical properties than pure Cu foils. It is estimated that the energy density of Cu@PPI should be much higher than that of Cu foil. This strategy should be applicable for other current collectors.

关键词： Copper-coated Vacuum evaporation Porous polyimide(PPI) Current collector(CC) LIBs

Observation of Two-Level Critical State in the Superconducting FeTe Thin Films

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Chinese Physics Letters 2019年第7期36卷 94-97页

作者： Hao ru yi-Shi Lin yin-Cong Chen Yang feng yi-Hua Wang Department of Physics and State Key Laboratory of Surface Physics Fudan University

FeTe, a non-superconducting parent compound in the iron-chalcogenide family, becomes superconducting after annealing in oxygen. Under the presence of magnetism, spin-orbit coupling, inhomogeneity and lattice distortion,the nature of its superconductivity is not well understood. Here we combine the mutual inductance technique with magneto transport to study the magnetization and superconductivity of FeTe thin films. It is found that the films with the highest TC show non-saturating superfluid density and a strong magnetic hysteresis distinct from that in a homogeneous superconductor. Such a hysteresis can be well explained by a two-level critical state model and suggests the importance of granularity to superconductivity in this compound.

关键词： a non-superconducting iron-chalcogenide superconductivity in this compound