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World Journal of Clinical Cases 2021年第10期9卷 2247-2258页

作者： Dong-Dong Huang Liang-Hua chen Zhe Yu quan-jun chen Jie-Nuan Lai Hai-Hong Li Gang Liu Department of Rehabilitation Medicine The Third Affiliated Hospital of Southern Medical UniversityGuangzhou 510630Guangdong ProvinceChina Department of Rehabilitation Medicine Nanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina

BACKGROUND Suspension training(SET)is a method of neuromuscular training that enables the body to carry out active training under unstable support through a suspension therapy ***,there have been few reports in the literature on the application of SET to anterior cruciate ligament reconstruction(ACLR)*** is not clear what aspects of the patient's function are improved after *** To investigate the effect of SET on the neuromuscular function,postural control,and knee kinematics of patients after ACLR *** Forty participants were randomized to an SET group or a control *** SET group subjects participated in a SET protocol over 6 *** control group subjects participated in a traditional training protocol over 6 *** muscle strength of the quadriceps and hamstrings,static and dynamic posture stability test,and relative translation of the injured knee were assessed before and after *** The relative peak torque of the quadriceps and hamstrings in both groups increased significantly(P0.05).CONCLUSION Our findings show that SET promotes great responses in quadriceps and hamstring muscle strength and balance function in ACLR patients.

关键词： Anterior cruciate ligament reconstruction Suspension training Neuromuscular function Postural control Knee kinematics Rehabilitation

Stereochemical Effects in Mass Spectrometry ( Ⅶ )——Negative Ion Fast Atom Bombardment Mass Spectro-metry of Saccharides with Areneboronic Acids as Reagents

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Chemical Research in Chinese Universities 1992年第3期8卷 231-238页

作者： YANG Hou-jun (Department of Chemistry, Tsinghua University, Beijing, 100084)chen Yao-zu (Department of Chemistry, Lanzhou University, Lanzhou, 730000)ZHAO Fan-zhi, LI Hai-quan, ZHAI Jian-jun and chen Nen-yu (Instrumental Analysis & Research Center, Lanzhou University, Lanzhou, 730000)

1-Naphthylboronic acid and 2, 4-dimethylphenylboronic acid can react stereospecif-ically with hydroxy groups of saccharides on the probe tip of a fast atom bombardment mass spectrometer to form characteristic negatively-charged boronate ions. On the basis of the relative abundances of these characteristic ions, the epimers of mono- and di-saccharides may be distinguished. This approach was proved to be a simple and effective means for identifying sugars. The collisional activation moss spectra of these characteristic ions are also discussed.

关键词： Reaction mass spectrometry Stereochemical effect Saccharides

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

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Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： Zhenyu chen Xue-jun Li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing chen Chao Wu Xiaoling Liu Biao Meng Tao chen Yu Han jun Wang Shibo Xi Yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

Utilizing engineered extracellular vesicles as delivery vectors in the management of ischemic stroke:a special outlook on mitochondrial delivery

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Neural Regeneration Research 2025年第8期20卷 2181-2198页

作者： Jiali chen Yiyang Li Xingping quan Jinfen chen Yan Han Li Yang Manfei Zhou Greta Seng Peng Mok Ruibing Wang Yonghua Zhao Institute of Chinese Medical Sciences State Key Laboratory of Quality Research in Chinese MedicineUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Pharmacy Hunan Provincial People’s Hospitalthe First Affiliated Hospital of Hunan Normal UniversityChangshaHunan ProvinceChina Department of Electrical and Computer Engineering University of MacaoTaipaMacao Special Administrative RegionChina Department of Pharmaceutical Sciences Faculty of Health SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina

Ischemic stroke is a secondary cause of mortality worldwide,imposing considerable medical and economic burdens on *** vesicles,serving as natural nanocarriers for drug delivery,exhibit excellent biocompatibility in vivo and have significant advantages in the management of ischemic ***,the uncertain distribution and rapid clearance of extracellular vesicles impede their delivery *** utilizing membrane decoration or by encapsulating therapeutic cargo within extracellular vesicles,their delivery efficacy may be greatly ***,previous studies have indicated that microvesicles,a subset of large-sized extracellular vesicles,can transport mitochondria to neighboring cells,thereby aiding in the restoration of mitochondrial function post-ischemic *** extracellular vesicles have also demonstrated the capability to transfer mitochondrial components,such as proteins or deoxyribonucleic acid,or their sub-components,for extracellular vesicle-based ischemic stroke *** this review,we undertake a comparative analysis of the isolation techniques employed for extracellular vesicles and present an overview of the current dominant extracellular vesicle modification *** the complex facets of treating ischemic stroke,we also delineate various extracellular vesicle modification approaches which are suited to different facets of the treatment ***,given the burgeoning interest in mitochondrial delivery,we delved into the feasibility and existing research findings on the transportation of mitochondrial fractions or intact mitochondria through small extracellular vesicles and microvesicles to offer a fresh perspective on ischemic stroke therapy.

关键词： delivery engineering extracellular vesicles identification ischemic stroke isolation mitochondria targeting strategy therapeutic effects

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麦草化学浆抄造轻型印刷纸的研究

中国造纸 2017年第8期36卷 30-34页

作者：张权彭建军陈雪梅陈铃华沈臻煌中国制浆造纸研究院北京100102 制浆造纸国家工程实验室北京100102

以高孔隙率合成硅酸钙为填料,以生产轻型印刷纸常用的纸浆配比为基础,逐步提高纸浆中低白度麦草化学浆的比例,考察以100%低白度麦草化学浆加填合成硅酸钙抄造轻型印刷纸的可行性。结果表明,以高孔隙率合成硅酸钙为填料、低白度麦草化学... 详细信息

以高孔隙率合成硅酸钙为填料,以生产轻型印刷纸常用的纸浆配比为基础,逐步提高纸浆中低白度麦草化学浆的比例,考察以100%低白度麦草化学浆加填合成硅酸钙抄造轻型印刷纸的可行性。结果表明,以高孔隙率合成硅酸钙为填料、低白度麦草化学浆配抄轻型纸时,随着麦草化学浆逐渐替代化学木浆和化机浆,填料留着率呈上升趋势,手抄片的不透明度、抗张强度和抗水性均逐渐提高,松厚度稍有下降,白度下降;以100%麦草化学浆加填合成硅酸钙采用动态纸页成形器抄造轻型印刷纸并压光至所要求的平滑度时,与常规浆料配比加填PCC在相同条件下抄造的轻型纸相比,松厚度从1.74 cm^3/g提高到1.88 cm^3/g,抗张指数从34.2 N·m/g提高到44.5 N·m/g,吸水值从47.0 g/m^2降低到35.9 g/m^2,不透明度基本保持不变,高达92.6%,白度从80.3%降低到71.7%,符合轻型印刷纸的白度要求。综合来看,麦草化学浆加填合成硅酸钙抄造轻型印刷纸,成纸质量较好。

关键词：低白度麦草化学浆轻型印刷纸合成硅酸钙

MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self-Powered Motion Sensing

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NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： Wang, Yu-Ze Wang, Yu-Chang Liu, Ting-Ting Zhao, quan-Liang Li, chen-Sha Cao, Mao-Sheng Beijing Inst Technol Sch Mat Sci & Engn Beijing 100081 Peoples R China Peking Univ Sch Mat Sci & Engn Beijing 100871 Peoples R China North China Univ Technol Sch Mech & Mat Engn Beijing 100144 Peoples R China Heilongjiang Univ Minist Educ Peoples Republ China Key Lab Funct Inorgan Mat Chem Harbin 150080 Peoples R China

Polymeric microwave actuators combining tissue-like softness with programmable microwave-responsive deformation hold great promise for mobile intelligent devices and bionic soft robots. However, their application is challenged by restricted electromagnetic sensitivity and intricate sensing coupling. In this study, a sensitized polymeric microwave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx (MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique space-charge polarization and interfacial polarization, resulting in significant improvements of 230% in the dielectric loss factor and 830% in the apparent efficiency of electromagnetic energy harvest. The sensitized microwave actuation demonstrates as the shortened response time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (up to 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combines driving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of similar to 3 mV) during actuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approach for developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

Observation of topological charge transformations in acoustic vortex using passive periodic systems

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 140-147页

作者： Di-Chao chen Xie Liu Changqing Xu Da-Jian Wu Ying cheng Xiao-jun Liu School of Physics and Technology Nanjing Normal University Key Laboratory of Modern Acoustics School of Physics Nanjing University

Vortex transmutation utilizes a periodic system, which not only enables the alteration of the topological charge(TC) of unstable input vortices but also facilitates their transformation into stable structures. This approach is crucial for investigating the characteristics of vortices in various wave systems. Here, we achieve acoustic vortex TC transmutation by employing a welldesigned dual-structured plate external system(DPES). The interactions between the acoustic vortex and the finite-order discrete rotational symmetry lead to the transformation of its topological charge when complete rotational symmetry is broken to Nthorder discrete symmetry. Our results experimentally demonstrate the acoustic vortex TC transmutation based on passive artificial structures, enabling numerous applications in particle manipulation and information multiplexing as well as advancing our understanding and control over free-space acoustic vortices.

关键词： acoustic vortex topological charge transformation artificial structure

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在体育教学中如何使学生掌握学习策略

体育学刊 2004年第4期11卷 95-96页

作者：杨国庆朱俊全陈世雄北京师范大学体育与运动学院北京100875

传统体育教学方法单一,以教师为主体,学生在学习中没有自我学习策略,学习效果和学习效率很低。而新课程标准倡导以学生为主体,让学生在学习中拥有更大的自主学习空间。探讨如何在体育教学中使学生掌握有效的学习策略。

关键词：体育教学学习策略心理学

Y、Nd复合稀土对AZ81镁合金耐蚀性的影响

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特种铸造及有色合金 2009年第4期29卷 368-371页

作者：李肖丰李全安陈君张清张兴渊河南科技大学材料科学与工程学院

利用静态质量损失法研究了Y、Nd复合稀土对AZ81镁合金在3.5%的NaCl水溶液中的腐蚀速率的影响;利用金相显微镜、扫描电子显微镜等方法研究了合金微观组织及腐蚀表面形貌。结果表明,添加2%的复合稀土时,AZ81合金的晶粒得到了细化,组织和... 详细信息

利用静态质量损失法研究了Y、Nd复合稀土对AZ81镁合金在3.5%的NaCl水溶液中的腐蚀速率的影响;利用金相显微镜、扫描电子显微镜等方法研究了合金微观组织及腐蚀表面形貌。结果表明,添加2%的复合稀土时,AZ81合金的晶粒得到了细化,组织和成分更加均匀,表面腐蚀产物颗粒最小,并且分布均匀而致密,腐蚀速率大幅度降低,耐蚀性能得到明显的改善。

关键词： Y Nd AZ81镁合金耐蚀性