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Donor site reconstruction by adjacent half-width metatarsal after full-width metatarsal transfer for metacarpal reconstruction in severe thumb hypoplasia

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Chinese Medical Journal 2023年第17期136卷 2104-2106页

作者： Fan Bai Lu liu Qipei Wei qiuya li Yunhao Xue Chen Yang Shanlin Chen Department of Hand Surgery Beijing Jishuitan HospitalBeijing 100035China

The treatment of Manske type IIIB and IV thumb hypoplasia remains controversial,and parents increasingly expect to maintain the hypoplastic thumb in preference to a five-digit hand.[1,2]There has been a recent increased number of reports regarding the reconstruction of severe thumb hypoplasia with the use of free metatarsal transfers(MTs).Tsujino et al[3]reconstructed a thumb with a nonvascularized 4th metatarsal,and filled the bone defect with an iliac *** et al[4]reported on thumb reconstruction with hemi-width MT,which reduced not only the sacrifice of the donor foot but also the strength of the reconstructed metacarpal.

关键词： thumb metatarsal width

Reversible li plating regulation on graphite anode through a barium sulfate nanofibers-based dielectric separator for fast charging and high-safety lithium-ion battery

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Journal of Energy Chemistry 2025年第2期101卷 511-523页

作者： Yaxin Zhang Long Cheng Ying-Jie Zhu Jin Wu Han-Ping Yu Sida Xie Dandan li Zhaohui Wang Heng li State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences College of Materials Science and Engineering Hunan University Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Poor li plating reversibility and high thermal runaway risks are key challenges for fast charging lithiumion batteries with graphite ***,a dielectric and fire-resistant separator based on hybrid nanofibers of barium sulfate（BS） and bacterial cellulose（BC） is developed to synchronously enhance the battery's fast charging and thermal-safety *** regulation mechanism of the dielectric BS/BC separator in enhancing the li+ion transport and li plating reversibility is revealed.（1） The Max-Wagner polarization electric field of the dielectric BS/BC separator can accelerate the desolvation of solvated li+ions,enhancing their transport kinetics.（2） Moreover,due to the charge balancing effect,the dielectric BS/BC separator homogenizes the electric field/li+ion flux at the graphite anode-separator interface,facilitating uniform li plating and suppressing li dendrite ***,the fast-charge graphite anode with the BS/BC separator shows higher Coulombic efficiency（99.0% vs.96.9%） and longer cycling lifespan（100 cycles vs.59 cycles） than that with the polypropylene（PP） separator in the constantlithiation cycling test at 2 mA *** high-loading liFePO4(15.5 mg cm-2)//graphite(7.5 mg cm-2) full cell with the BS/BC separator exhibits excellent fast charging performance,retaining 70% of its capacity after 500 cycles at a high rate of 2C,which is significantly better than that of the cell with the PP separator（retaining only 27% of its capacity after 500 cycles）.More importantly,the thermally stable BS/BC separator effectively elevates the critical temperature and reduces the heat release rate during thermal runaway,thereby significantly enhancing the battery's safety.

关键词： Fast charging Graphite anode Ion transport lithium-ion battery Separator

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银杏内酯B多晶型的制备、表征与性质研究

中国药剂学杂志（网络版） 2019年第4期17卷 100-106页

作者：李秋亚孙婷王东凯沈阳药科大学药学院辽宁沈阳110016 沈阳沃森药物研究所辽宁沈阳110016

目的研究银杏内酯B多晶型的制备、表征与性质。方法对银杏内酯B进行多晶型筛查,并制备了6种不同的晶型(A^F型),分别采用单晶X射线衍射法(SXRD)、差示扫描量热法(DSC)、热重分析法(TG)对样品进行表征分析,并进一步研究银杏内酯B不同晶型... 详细信息

目的研究银杏内酯B多晶型的制备、表征与性质。方法对银杏内酯B进行多晶型筛查,并制备了6种不同的晶型(A^F型),分别采用单晶X射线衍射法(SXRD)、差示扫描量热法(DSC)、热重分析法(TG)对样品进行表征分析,并进一步研究银杏内酯B不同晶型对谷氨酸导致的PC12细胞损伤保护作用的优劣。结果各晶型PXRD、DSC、TG图谱均存在明显的差异,可用上述方法进行鉴别。无溶剂晶型F型为稳定晶型,通过细胞实验证明了晶型F对PC12细胞的保护作用更强。结论银杏内酯B晶型F为优势用药晶型。

关键词：药剂学多晶型晶型制备表征分析银杏内酯B

Significant reduction of anisotropy in stress relaxation aging and mechanical properties improvement for 2195 Al-Cu-li alloy subjected to plastic loading

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Chinese Journal of Aeronautics 2025年第1期38卷 217-234页

作者： liwen ZHANG Heng li Tianjun BIAN Changhui WU Yanfeng YANG State Key Lab of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Xi’an Aeronautical Polytechnic Institute Xi’an 710089China Shaanxi Key Laboratory of High-Performance Precision Forming Technology and Equipment Northwestern Polytechnical UniversityXi’an 710072China

Although the plastic loading can enhance creep deformation and yield strength,the anisotropic Stress Relaxation Aging(SRA)behavior and mechanism under plastic loading remain unclear,which presents a significant challenge in accurately shaping aluminum alloy *** this study,the SRA behavior of 2195-T4 Al-Cu-li alloys were thoroughly studied under initial loading stresses within the elastic(210/250 MPa)and plastic(380/420 MPa)ranges at 180℃by stress relaxation and tensile tests as well as microstructure *** findings reveal that compared with those under elastic loadings,in-plane anisotropy(IPA)values of the stress relaxation amount,yield strength and fracture elongation under plastic loadings are reduced by 60%–80%,70%–90% and 72%–89%,***,IPA values of precipitate size in grains and PrecipitationFree Zones(PFZ)width at grain boundaries under plastic loading decrease by 31.4%and 94.4%*** results indicate plastic loading significantly weakens the anisotropic SRA behavior,owing to numerous uniformly distributed fine T1phases and small IPA values of both T1precipitates size and PFZ width in various loading *** with those of elastic loadingaged alloys,yield strength of plastic loading-aged alloys shows high strength-ductility because of the combined effect of closely dispersed fine T1precipitates,narrowed PFZ and numerous sheared and rotated T1phases at different locations during tensile *** uniformly distributed larger Kernel Average Misorientation(KAM)and Schmidt factor values of the plastic loading-aged alloy,as well as the cross-slip generated,also help to enhance the strength and ductility of the alloy.

关键词： Aluminum-lithium alloy Stress relaxation aging Precipitation-free zones In-plane anisotropy Stress relaxation

腕关节患者功能自评量表的设计及其信度与效度评价

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中华骨科杂志 2023年第5期43卷 300-307页

作者：刘路魏绮珮李秋雅白帆王志新刘畅陈山林北京积水潭医院手外科北京100035

目的设计适合中国患者使用的腕关节患者自评量表并对其信度和效度进行评价。方法参考现有国外量表和国内腕关节专家意见,建立初选条目池。11名手外科医生及10例腕关节疾病患者对条目池进行评价及取舍,构建量表的基本框架,形成初始测试... 详细信息

目的设计适合中国患者使用的腕关节患者自评量表并对其信度和效度进行评价。方法参考现有国外量表和国内腕关节专家意见,建立初选条目池。11名手外科医生及10例腕关节疾病患者对条目池进行评价及取舍,构建量表的基本框架,形成初始测试量表。采用方便取样法,抽取2015年9月至2016年11月于北京市积水潭医院手外科住院的100例腕关节疾病患者进行问卷调查。总结问卷调查结果的条目应答率、条目区分度、条目-维度归属度、变异度、反应度、条目整体归属情况、内部一致性及因子负荷共8项指标,对各条目取舍,得到腕关节患者功能自评量表。使用重测信度、Cronbach系数、专家评分、KMO值、替代性检验指数(χ2/df)、近似均方根误差(root mean square error of approximation,RMSEA)、比较拟合指数(comparative fit index,CFI)对量表的信度及效度进行评价。结果对备选条目池共40个主观条目进行取舍,形成初始测试量表,共32个条目(A1~D4),分为生理、安全、疼痛、情感与归属四个维度。92例患者完成问卷调查,全部条目的应答率>90%。条目区分度中,只有B10条目的高分组得分[(3.20±0.577)分(范围1~3分)]与低分组[(2.68±0.627)分(范围2~5分)]比较差异无统计学意义(t=5.11,P=0.340),被删除。条目-维度归属度结果中考虑删除A1、A2、A5、A6、A7、A8、A9、A10、A11、A12、B4、B6、B7、C5、D1、D2、D3,共17个条目。共11个条目的变异度<0.65:A4(0.645)、A7(0.593)、B1(0.590)、B5(0.617)、B8(0.578)、B9(0.612)、B10(0.526)、D1(0.644)、D2(0.320)、D3(0.169)、D4(0.526)。不符合反应度要求的条目为A2、A4、A6、A8、B4、B6、D1、D2、D3、C2、C3、C4、C5、C6。因子负荷<0.4的条目包括D2(-0.051)、D3(-0.127)、D4(0.267)。内部一致性不符合要求的条目为C4(0.026)、C5(0.023)、D1(0.103)、D2(0.434)、D3(0.387)、D4(0.062)。多元线性回归分析中共19个条目未被纳入最终的回归方程中。综合指标分析后删除D1、D2、D3,最终剩余有效条目29条,形成腕关节患者功能自评量表。该量表中生理、安全、疼痛、情感与归属维度重测信度分别为0.984、0.976、0.985、0.802(P<0.001),KMO值为0.894(P<0.001)。因情感与归属维度仅有1项而无法评价,生理维度的χ2/df、CFI及RMSEA分别为5.152、0.817、0.022,安全维度分别为5.378、0.795、0.023,疼痛维度分别为7.439、0.865、0.028。结论腕关节患者功能自评量表为依据中国患者的主观评价而制定的量表,共四个维度29个条目,量表具有较好的信度和效度,可以作为中国患者主观评定腕关节功能的量表。

关键词：腕关节结果可重复性诊断性自我评价

A Review on Thermal Management of li-ion Battery:from Small-Scale Battery Module to Large-Scale Electrochemical Energy Storage Power Station

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Journal of Thermal Science 2025年第1期34卷 1-23页

作者： CHEN Zhifeng JIA li YIN liaofei DANG Chao REN Honglei ZHANG Zhiqiang Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale School of MechanicalElectronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China

li-ion battery is an essential component and energy storage unit for the evolution of electric vehicles and energy storage technology in the ***,in order to cope with the temperature sensitivity of li-ion battery and maintain li-ion battery safe operation,it is of great necessary to adopt an appropriate battery thermal management system(BTMS).In this paper,the current main BTM strategies and research hotspots were discussed from two aspects:small-scale battery module and large-scale electrochemical energy storage power station(EESPS).The practical application situation,advantages and disadvantages,and the future development trend of each heat dissipation method(air,liquid,PCM,heat pipe,hybrid cooling)were described in *** them,the air cooling and liquid cooling were reviewed in-depth based on the engineering *** PCM,heat pipe and hybrid cooling were reviewed extensively based on the latest *** research provides a comprehensive understanding for the BTMS in all scales.

关键词： battery thermal management cooling methods small-scale battery module large-scale electrochemical energy storage power station

Ti^(3+)/Ti^(4+)and Co^(2+)/Co^(3+)redox couples in Ce-doped Co-Ce/TiO2 for enhancing photothermocatalytic toluene oxidation

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Journal of Environmental Sciences 2025年第3期149卷 164-176页

作者： Guanghui li Xiaolan li Xinhui Hao Qiang li Meng Zhang Hongpeng Jia Xiamen Key Laboratory of Materials for Gaseous Pollutant Control Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

Cerium and cobalt loaded Co-Ce/TiO_(2)catalyst prepared by impregnation method was investigated for photothermal catalytic toluene *** on catalyst characterizations(XPS,EPR and H2-TPR),redox cycle between Co and TiO_(2)(Co^(2+)+Ti^(4+)↔Co^(3+)+Ti^(3+))results in the formation of Co^(3+),Ti^(3+)and oxygen vacancies,which play important roles in toluene catalytic oxidation *** introduction of Ce brings in the dual redox cycles(Co^(2+)+Ti^(4+)↔Co^(3+)+Ti^(3+),Co^(2+)+Ce4+↔Co^(3+)+Ce3+),further promoting the elevation of reaction sites *** full spectrum irradiation with light intensity of 580mW/cm^(2),Co-Ce/TiO_(2)catalyst achieved 96%of toluene conversion and 73%of CO_(2)yield,obviously higher than Co/P25 and Co/TiO_(2).Co-Ce/TiO_(2)efficiently maintains 10-hour stability test under water vapor conditions and exhibits better photothermal catalytic performance than counterparts under different wavelengths *** catalytic reaction displays improved activities compared with thermal catalysis,which is attributed to the promotional effect of light including photocatalysis and light activation of reactive oxygen species.

关键词： Photothermal catalysis Redox cycle Oxygen vacancy VOCs Titanium dioxide

Holographic images of a charged black hole in Lorentz symmetry breaking massive gravity

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 59-72页

作者： Xiao-Xiong Zeng li-Fang li Pan li Bo liang Peng Xu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Mechanics Chongqing Jiaotong UniversityChongqing 400074.China Center for Gravitational Wave Experiment National Microgravity LaboratoryInstitute of MechanicsChinese Academy of SciencesBeijing 100190China Lanzhou Center of Theoretical Physics Lanzhou UniversityLanzhou 730000China

Using the AdS/CFT correspondence,this paper investigates the holographic images of a charged black hole within the context of Lorentz symmetry breaking massive *** photon rings,luminosity-deformed rings,or light points from various observational perspectives are *** also study the influences of both the chemical potential and temperature on the Einstein *** the previous work,which primarily examines the effect of chemical potential on ring radius at high temperatures and find no change in the radius with varying chemical potential,we also investigate the effect of chemical potential on the ring radius at low temperature besides at high *** findings indicate that at low temperatures,the photon ring radius decreases with increasing of chemical potential,while at high temperatures,the results are consistent with previous ***,we explore the impact of the model parameterλon the Einstein ring radius and find the the ring radius increases as the model parameterλ*** interestingly,for the large chemical potential,u=1,the temperature dependence of the photon ring radius is reversed forλ=2 andλ=***,for a small chemical potential u=0.1,the temperature dependence of the Einstein ring stays the same asλ=2 andλ=4.

关键词： AdS/CFT correspondence holographic images massive gravity black holes

Towards a blank design method for manufacturing big-tapered profiled ring disk by spinning-rolling process

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Chinese Journal of Aeronautics 2025年第1期38卷 70-86页

作者： Xuechao li lianggang GUO Xiaoqing CHEN Heng li State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Materials Science and Engineering Xinjiang UniversityUrumqi 830017China National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China CNPC Baoji Oilfield Machinery Co. LtdBaoji 721000China

The big-tapered profiled ring disk is a key component of engines for rockets and missiles.A new forming technology,as called spinning-rolling process,has been proposed previously for the high performance,high efficiency and low-cost manufacturing of the *** design is the key part of plastic forming process *** spinning-rolling process,the shape and size of the blank play a crucial role in process stability,deformation behavior and dimensional *** this work proposes a blank design method to determine the geometry structure and sizes of the *** mathematical model for calculating the blank size has been deduced based on volume conservation and neutral layer length invariance *** FE simulation and corresponding trial production of an actual big-tapered profiled ring disk show that the proposed blank design method is *** order to obtain a preferred blank,the influence rules of blank size determined by different deformation degrees(rolling ratio k)on the spinning-rolling process are revealed by comprehensive FE *** considering the process stability,circularity of the deformed ring disk and forming forces,a reasonable range of deformation degree(rolling ratio k)is recommended for the blank design of the new spinning-rolling process.

关键词： Blank design method Spinning-rolling process Big-tapered profiled ring disk Rolling ratio Intelligent FE simulation