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Peripheral radial chop technique for phacoemulsification of hard cataracts

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Chinese Medical Journal 2007年第4期120卷 284-286页

作者： LI Shao-wei XIE Li-xin song Zhen-hua MENG Li JIANG Jian Shandong Eye Institute Qingdao 266071 China

Background Phacoemulsification yields successful outcomes in eyes with standard cataract. Though techniques have been improved, it is still challenging to perform phacoemulsification in cases of hard cataracts for difficulty in nuclear management and much more complications. This study aimed at describing and evaluating the efficacy and safety of a peripheral radial chop technique to remove hard cataracts. Methods In this prospective study conducted between January 2003 and January 2004, 107 consecutive eyes with hard cataract underwent modified phacoemulsification surgery with peripheral radial chop technique by the Bausch ＆ Lomb Millennium phacoemulsifler with preset parameters of power less than 30%; vaccum, 150 mmHg; and bottle height, 85 cm when a DP8145 phaco tip was used, and vaccum, 380 mmHg; bottle height, 95 cm when a DP8245 phaco tip was used. Results The mean ultrasonic power was 14.7% （range 9% to 19%）, ultrasonic time was 1.98 minutes （range 1.55 to 3.18 minutes）. At 1, 7 and 30 days postoperatively, the eyes with uncorrected visual acuity 0.5 or better accounted for 76.42%, 87.16% and 90.67% respectively. At 1 month, the endothelial cell loss rate was 9.74% （range 8% to 17%）. There were 6 cases of posterior capsule rupture in an early period of study. No serious intraoperaUve or postoperative complications were noted. Conclusions The peripheral radial chop technique was effective without serious complications in hands of an experienced surgeon.

关键词： phacoemulsification chop technique hard cataract

Effect of lithium content on electrochemical property of Li_(1+x)(Mn_(0.6)Ni_(0.2)Co_(0.2))_(1-x)O_2(0≤x≤0.3) composite cathode materials for rechargeable lithium-ion batteries

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Transactions of Nonferrous Metals Society of China 2018年第1期28卷 145-150页

作者： Cheng-chi PAN Ying-chang YANG Hong-shuai HOU Ming-jun JING Yi-rong ZHU wei-xin song Xiao-bo JI College of Chemistry and Chemical Engineering Central South University Changsha 410083 China

In order to confirm the optimal Li content of Li-rich Mn-based cathode materials(a fixed mole ratio of Mn to Ni to Co is0.6:0.2:0.2),Li1+x(Mn0.6Ni0.2Co0.2)1-xO2(x=0,0.1,0.2,0.3)composites were obtained,which had a typical layered structure with R3m and C2/m space group observed from X-ray powder diffraction(XRD).Electron microscopy micrograph(SEM)reveals that the particle sizes in the range of0.4-1.1μm increase with an increase of x ***1.2(Mn0.6Ni0.2Co0.2)0.8O2sample delivers a larger initial discharge capacity of275.7mA·h/g at the current density of20mA/g in the potential range of2.0-4.8V,while Li1.1(Mn0.6Ni0.2Co0.2)0.9O2shows a better cycle performance with a capacity retention of93.8%at0.2C after50cycles,showing better reaction kinetics of lithium ion insertion and extraction.

关键词： cathode material Li1+x(Mn0.6Ni0.2Co0.2)1-xO2 electrochemical property lithium-ion battery

Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng song Ihar Razanau Juanxiu Xiao wei Xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

嗜酸性肉芽肿性多血管炎的临床与胸部影像特征

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中国医学科学院学报 2016年第5期38卷 617-620页

作者：徐晓莉宋伟隋昕宋兰杜倩妮王晓中国医学科学院北京协和医学院北京协和医院放射科北京100730

嗜酸性肉芽肿性多血管炎(EGPA)是抗中性粒细胞胞浆抗体相关性小血管炎及高嗜酸粒细胞综合征的一种,以哮喘、浸润性坏死性血管炎、血管外肉芽肿、外周血嗜酸粒细胞增多和多器官组织嗜酸粒细胞浸润为特征。EGPA临床罕见,本文就该病的临床... 详细信息

嗜酸性肉芽肿性多血管炎(EGPA)是抗中性粒细胞胞浆抗体相关性小血管炎及高嗜酸粒细胞综合征的一种,以哮喘、浸润性坏死性血管炎、血管外肉芽肿、外周血嗜酸粒细胞增多和多器官组织嗜酸粒细胞浸润为特征。EGPA临床罕见,本文就该病的临床、病理特征及胸部影像特点进行综述。

关键词： Churg-Strauss综合征嗜酸性肉芽肿性多血管炎计算机体层摄影术病理

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手术室护理不安全因素分析与防范措施探讨

中国继续医学教育 2017年第21期9卷 256-258页

作者：魏新宋梅枣庄矿业集团滕南医院手术室山东微山277600

目的研究分析手术室护理不安全因素及相应防范措施。方法回顾性分析2015年1月—2017年1月我院手术室各项医疗护理纠纷案件,以探讨分析其中的不安全因素,及相应的防范措施。结果手术室护理不安全因素主要包括:人员因素(45%)、管理因素(21... 详细信息

目的研究分析手术室护理不安全因素及相应防范措施。方法回顾性分析2015年1月—2017年1月我院手术室各项医疗护理纠纷案件,以探讨分析其中的不安全因素,及相应的防范措施。结果手术室护理不安全因素主要包括:人员因素(45%)、管理因素(21.7%)、技术因素(18.3%)、环境因素(15%)。结论手术室护理不安全因素的防范需要从加强与患者的沟通、提高护理人员素质、合理安排人力资源、强化安全意识和法律意识、完善规章制度几个方面出发。

关键词：手术室护理不安全因素防范措施

Recent development of LiNi_xCo_yMn_zO_2:Impact of micro/nano structures for imparting improvements in lithium batteries

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Transactions of Nonferrous Metals Society of China 2013年第1期23卷 108-119页

作者：潘成迟 Craig E.BANKS 宋维鑫王驰伟陈启元纪效波中南大学化学化工学院有色金属资源化教育部重点实验室长沙410083 Faculty of Science and Engineering School of BiologyChemistry and Health ScienceDivision of Chemistry and MaterialsManchester Metropolitan UniversityChester StreetManchester M1 5GDLancsUK 天津市捷威动力工业有限公司天津300380

The recent advancement in the design,synthesis,and fabrication of micro/nano structured LiNixCoyMnzO2 with one-,two-,and three-dimensional morphologies was *** major goal is to highlight LiNixCoyMnzO2 materials,which have been utilized in lithium ion batteries with enhanced energy and power density,high energy efficiency,superior rate capability and excellent cycling stability resulting from the doping,surface coating,nanocomposites and nano-architecturing.

关键词： lithium-ion battery micro/nano structures LiNixCoyMnzO2 doping surface coating composite materials

Passive activity enhances residual control ability in patients with complete spinal cord injury

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Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He Jia Zheng Hongming Bai Jia-Sheng Rao Guiyun song wei song Xiaoguang Li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

MoS_(2)Lubricate‑Toughened MXene/ANF Composites for Multifunctional Electromagnetic Interference Shielding

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Nano-Micro Letters 2025年第2期17卷 358-371页

作者： Jiaen Wang wei Ming Longfu Chen Tianliang song Moxi Yele Hao Zhang Long Yang Gegen Sarula Benliang Liang Luting Yan Guangsheng Wang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing 100044People’s Republic of China Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China

The design and fabrication of high toughness electromagnetic interference(EMI)shielding composite films with diminished reflection are an imperative task to solve electromagnetic pollution *** MXene/ANF(aramid nanofibers)–MoS_(2)composite films with nacre-like layered structure here are fabricated after the introduction of MoS_(2)into binary MXene/ANF composite *** introduction of MoS_(2)fulfills an impressive“kill three birds with one stone”improvement effect:lubrication toughening mechanical performance,reduction in secondary reflection pollution of electromagnetic wave,and improvement in the performance of photothermal *** the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 50:50),the strain to failure and tensile strength increase from 22.1±1.7%and 105.7±6.4 MPa and to 25.8±0.7%and 167.3±9.1 MPa,*** toughness elevates from 13.0±4.1 to 26.3±0.8 MJ m^(−3)(~102.3%)*** the reflection shielding effectiveness(SE_(R))of MXene/ANF(mass ratio of 50:50)decreases~10.8%.EMI shielding effectiveness(EMI SE)elevates to 41.0 dB(8.2–12.4 GHz);After the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 60:40),the strain to failure increases from 18.3±1.9%to 28.1±0.7%(~53.5%),the SE_(R)decreases~22.2%,and the corresponding EMI SE is 43.9 *** MoS_(2)also leads to a more efficient photothermal conversion performance(~45 to~55℃).Additionally,MXene/ANF–MoS_(2)composite films exhibit excellent electric heating performance,quick temperature elevation(15 s),excellent cycle stability(2,2.5,and 3 V),and long-term stability(2520 s).Combining with excellent mechanical performance with high MXene content,electric heating performance,and photothermal conversion performance,EMI shielding ternary MXene/ANF–MoS_(2)composite films could be applied in many industrial *** work broadens how to achieve a balance between mechanical properties and versatility of composites in the case of high-function fillers.

关键词： MXene-MoS_(2) Lubrication toughening EMI shielding Photothermal conversion Electric heating performance

Precise gradient separation of nanoparticles using reduced graphene oxide-polyoxomolybdate membranes

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Science China Chemistry 2025年第01期 209-216页

作者： Yixin Yang Wanlei Zhao Ruoxuan Zheng Hongqiang Li wei Chen Yu-Fei song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Quzhou Institute for Innovation in Resource Chemical Engineering

The purification and size sieving of nanoparticles （NPs） represents a significant scientific ***,the r GO-polyoxometalates (POMs=PMo12,Mo132and Mo368) membranes were fabricated successfully via a simple and scalable POMsassisted in-situ photoreduction *** the mass ratio of r GO to PMo12was 1:30,the resultant r GO-PMo12membranes with highly ordered and uniform nanochannels of 1.0 nm can be obtained,which showed an accurate carbon quantum dots（CQDs） separation with a cut-off size approximately 1.0 *** increase of the size of the interlayered POMs from PMo12（1.0 nm）,{Mo132}（2.9 nm） to{Mo368}（3.8 nm）,the resultant r GO-PMo12,r GO-Mo132and r GO-Mo368exhibited precise gradient separation of CQDs and Au nanoparticles by size exclusion *** results pave a promising way to construct new twodimensional （2D） membranes for highly efficient size-selective separation.

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