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Interface-induced polymerization strategy for constructing titanium dioxide embedded carbon porous framework with enhanced chemical immobilization towards lithium polysulfides

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Nano Research 2024年第3期17卷 1473-1481页

作者： Yue Ouyang Xiaoxiao Li Jiexin Zhu Wei Zong Yuhang Dai Xuan Gao Wei Zhang shengyuan Yang Roohollah Bagherzadeh feili Lai Yue-E Miao Tianxi Liu state Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua University2999 North Renmin RoadShanghai 201620China The Key Laboratory of synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China Advanced Fibrous Materials LAB Institute for Advanced Textile Materials and Technologies(ATMT)School of Advanced Materials and ProcessesAmirkabir University of TechnologyTehran 15914Iran Christopher Ingold Laboratory Department of ChemistryUniversity College London20 Gordon StreetLondon WC1H 0AJUK Department of Chemistry KU LeuvenCelestijnenlaan 200FLeuven 3001Belgium

The shuttle effect induced by soluble lithium polysulfides(LiPss)is known as one of the crucial issues that limit the practical applications of lithium-sulfur(Li-s)***,a titanium dioxide nanoparticle embedded in nitrogen-doped porous carbon nanofiber(TiO_(2)@NCNF)composite is constructed via an interface-induced polymerization strategy to serve as an ideal sulfur *** the protection of the nanofiber walls,the uniformly dispersed TiO_(2) nanocrystalline can act as capturing centers to constantly immobilize LiPss towards durable sulfur ***,the mesoporous microstructure in the fibrous framework endows the TiO_(2)@NCNF host with strong physical reservation for sulfur and LiPss,sufficient pathways for electron/ion transfer,and excellent endurance for volume *** expected,the sulfur-loaded TiO_(2)@NCNF composite electrode presents a fabulous rate performance and long cycle lifespan(capacity fading rate of 0.062%per cycle over 500 cycles)at 2.0 ***,the assembled Li-s batteries harvest superb areal capacity and cycling stability even under high sulfur loading and lean electrolyte conditions.

关键词： interface-induced polymerization electrospun porous nanofibers lithium-sulfur(Li-s)batteries high sulfur loading lithium polysulfides(LiPss)immobilization

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ICU常见高危药物外渗原因分析及预防措施

中西医结合护理 2024年第7期10卷 135-139页

作者：杨非利张平刘杰中日友好医院ICU 北京100029

目的分析重症监护室(ICU)患者常见高危药物外渗发生原因,探讨应对措施。方法回顾性分析医院ICU 2022年10月—2023年11月收治的213例重症患者的临床资料,探讨住院期间发生高危药物外渗的风险问题,分析药物外渗的原因,总结临床药物外渗预... 详细信息

目的分析重症监护室(ICU)患者常见高危药物外渗发生原因,探讨应对措施。方法回顾性分析医院ICU 2022年10月—2023年11月收治的213例重症患者的临床资料,探讨住院期间发生高危药物外渗的风险问题,分析药物外渗的原因,总结临床药物外渗预防和应对措施。结果213例患者中发生高危药物外渗19例,发生率为8.92%。分析原因:9(47.37%)例由护士因素导致,5(26.32%)例由患者因素导致,3(15.79%)例由药物因素导致,2(10.53%)例由环境因素导致。结论针对ICU患者输液治疗时,护士需要熟知高危外渗药物种类,对患者的血管状况进行全面评估,以预防为主,通过实施针对性的防范措施降低药物外渗的发生风险。

关键词：重症监护室静脉输液药物外渗风险评估护理

基于等效电流密度模型的多层有限长螺线管轴线磁场分析

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计量学报 2024年第9期45卷 1378-1383页

作者：李泽松黄腓力王一民余善成金波宁波市计量测试研究院浙江宁波315048 浙江大学流体动力基础件与机电系统全国重点实验室浙江杭州310027

为了解决短杆轴向霍尔磁场探头现场校准的难题,提出了采用便携式有限长螺线管作为标准磁场发生器的方法。建立圆柱坐标系下螺线管线圈模型,并提出等效电流密度(ECD)法,结合Biot-savrt定理及磁场叠加原理,计算其轴线磁场强度,获得多层有... 详细信息

为了解决短杆轴向霍尔磁场探头现场校准的难题,提出了采用便携式有限长螺线管作为标准磁场发生器的方法。建立圆柱坐标系下螺线管线圈模型,并提出等效电流密度(ECD)法,结合Biot-savrt定理及磁场叠加原理,计算其轴线磁场强度,获得多层有限长螺线管轴线磁场的分布规律。同时,建立了多层有限长螺线管静磁场有限元模型,仿真计算获得给定激励电流条件下的空间磁场分布情况。根据理论分析结果,设计了中心磁场100 mT的螺线管试验样机,对ECD模型理论计算结果、仿真分析结果和样机测试数据进行对比。结果显示,在螺线管中心处,理论计算与仿真结果偏差在0.1%以内,试验测试结果与理论计算偏差在0.8%以内。分析结果验证了ECD法分析螺线管轴线磁场的有效性。该方法对于提高螺线管结构设计效率、优化设计参数等具有重要意义。

关键词：电磁计量螺线管轴线磁场等效电流密度 Biot-savart定律积分计算

Effect of roughness on the shear behavior of rock joints subjected to impact loading

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第2期15卷 339-349页

作者： feili Wang shuhong Wang Wei Yao Xing Li Fanzheng Meng Kaiwen Xia College of science Qingdao University of TechnologyQingdao266033China school of Resource and Civil Engineering Northeastern UniversityShenyang110819China state Key Laboratory of Hydraulic Engineering simulation and safety School of Civil EngineeringTianjin UniversityTianjin300072China Department of Civil and Mineral Engineering University of TorontoTorontoOntarioM5S 1A4Canada

The shear behavior is regarded as the dominant property of rock joints and is dramatically affected by the joint surface *** date,the effect of surface roughness on the shear behavior of rock joints under static or cyclic loading conditions has been extensively studied,but such effect under impact loading conditions keeps *** address this issue,a series of impact shear tests was performed using a novel-designed dynamic experimental system combined with the digital image correlation(DIC)*** dynamic shear strength,deformability and failure mode of the jointed specimens with various joint roughness coefficients(JRC)are comprehensively *** show that the shear strength and shear displacement characteristics of the rock joint under the impact loading keep consistent with those under static loading ***,the temporal variations of shear stress,slip displacement and normal displacement under the impact loading conditions show obviously different *** elastic rebound of the slip displacement occurs during the impact shearing and its value increases with increasing joint *** identifiable stages(*** and dilation)are observed in the normal displacement curves for the rougher rock joints,whereas the joints with small roughness only manifest normal compression ***,as the roughness increases,the maximum compression tends to decrease,while the maximum dilation gradually ***-over,the microstructural analysis based on scanning electron microscope(sEM)suggests that the roughness significantly affects the characteristics of the shear fractured zone enclosing the joint surface.

关键词： Rock joint Impact loading Joint roughness shear strength shear deformability

Non-metallic electronic regulation in CuCo oxy-/thio-spinel as advanced oxygen evolution electrocatalysts

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science China Chemistry 2021年第1期64卷 101-108页

作者： Huan Yang shuai Gao Dewei Rao Chaonan Zhang Xuecheng Zhou shaokang Yang Jingjing Ye shasha Yang feili Lai Xiaohong Yan school of Materials science and Engineering Jiangsu UniversityZhenjicmg 212013China Department of Chemistry KU LeuvenCelestijnenlaan 200FLeuven 3001Belgium

Developing cost-effective and high-performance oxygen evolution reaction(OER)electrocatalysts has become the intense research on pursuing emerging renewable energy conversion,in which exploring and investigating the intrinsic nature of efficient and stable Cu Co spinel catalysts toward OER in alkaline media is highly ***,Cu1–xCo2+xO4oxy-spinel nanoflakes are fabricated by a facile hydrothermal method with the oxidation of ammonia *** the same condition,Cu1–xCo2+xs4thio-spinel nanospheres are formed without *** OER process,the as-obtained Cu1–xCo2+xO4nanoflakes and Cu1–xCo2+xs4nanospheres possess the anodic overpotential of 267 and 297 m V in alkaline media to drive the current density of 10 m A/cm^2,respectively,outperforming the state-of-the-art noble metal catalyst of RuO2.X-ray photoelectron spectroscopy analysis exhibits the higher ratio value of Co(Ⅲ)/Co(Ⅱ)in Cu1–xCo2+xO4than that in Cu1–xCo2+xs4,suggesting that the stronglyelectronegative oxygen efficiently predominates in regulating valence states of Co active sites in spinel ***,density functional theory simulation further reveals that the increased valence state of Co could accelerate the electron exchange between catalysts and oxygen adsorbates during electrocatalysis,thus contributing to the higher OER activity of Cu1–xCo2+*** work provides deep insight regarding the significance of non-metal element(O and s)in Cu Co spinel structure catalysts,as well as presents a promising approach to exploit higher performance and grasp the mechanism of various non-noblemetal spinel catalysts for water oxidation.

关键词： copper-cobalt oxy-spinel thio-spinel oxygen evolution reaction density functional theory

Visualizing light-induced dynamic structural transformations of Au clusters-based photocatalyst via in situ TEM

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Nano Research 2021年第8期14卷 2805-2809页

作者： Bo Weng Youhong Jiang Hong-Gang Liao Maarten B.J.Roeffaers feili Lai Haowei Huang Zichao Tang state Key Laboratory for Physical Chemistry of solid surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China cMACs Department of Microbial and Molecular SystemsKU LeuvenCelestijnenlaan 200F3001 LeuvenBelgium Department of Chemistry KU LeuvenCelestijnenlaan 200F3001 LeuvenBelgium

Ultrasmall gold(Au)clusters have been regarded as one of the prototypes materials for solar energy conversion due to their unique strong molecular-like light absorption ***,the light-induced aggregation of Au clusters into nanoparticles is one of the most important factors that restricts its application in *** Au clusters aggregation has been widely demonstrated,the underlying mechanism for cluster fusion is still unclear due to the lack of experimental ***,we report the direct observation of Au clusters on TiO_(2) nanosheets aggregating when used as visible light photocatalysts for the reduction of *** in situ high-resolution transmission electron microscopy(TEM),the coexistence of two fusion mechanisms of Au clusters on TiO_(2) under ultraviolet-visible(UV-Vis)light irradiation in air is identified,i.e.,the migration and coalescence(MC)and Ostwald ripening(OR).Additionally,the correlation between the photostability of Au clusters and reaction atmospheres has been investigated,among which Au clusters have higher stability in an inert N_(2) atmosphere or vacuum than the oxidizing atmospheres(i.e.,air and O_(2)).These results indicate the inherent stability of Au cluster during photocatalysis,and instability comes from the consuming of ligand *** work not only discloses the underlying mechanism of Au cluster sintering but also provides guidelines for enhancing metal clusters-based photocatalysts stability.

关键词： photocatalysis dynamic structural transformation Au clusters in situ TEM

soluble Mouse B7-H3 Down-Regulates Dendritic Cell stimulatory Capacity to Allogenic T Cell Proliferation and Production of IL-2 and IFN-γ

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Cellular & Molecular Immunology 2006年第3期3卷 235-240页

作者： Junfa Xu Baojun Huang Ping Xiong Wei Feng Yong Xu Min Fang Fang Zheng feili Gong Department of Immunology Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China Department of Clinical Immunology Guangdong Medical College Zhanjiang Guangdong 524023 China Department of Immunology Anhui Medical University Hefei Anhui 230032 China

B7-H3 is a recently identified member of the B7 gene family. Its ubiquitous expression in both lymphoid and nonlymphoid tissues suggests that it could play an important role in the maintenance of self-tolerance. However, the exact function of B7-H3 is still elusive. The purpose of current study is to demonstrate the possible function of soluble mouse B7-H3 for prevention of DC-mediated T cell activation. For this purpose, we established a soluble mouse B7-H3 fusion protein （mB7h3-hIg） eukaryotic expression vector （pmB7h3-hIg） with a C-terminal human IgG1 Fc. A C57BL/6 （B6）-derived dendritic cell line （DC2.4 cells） was used for the establishment of stable transfectants for generation of soluble mB7h3-hIg. Ectopic mB7h3-hIg expression was confirmed by RT-PCR, Western blot and ELIsA analyses. A 49.7 kD protein was detected by Western blot from DC2.4 cells transfected with pmB7h3-hlg. It was found that soluble mB7h3-hIg expression has no effect on cell cycling and apoptosis and the expression of CD80 and CD86 of the DC2.4 cells. However, ectopic soluble mB7h3-hIg expression was found to significantly affect the allo-stimulatory capability for DC2.4 cells. DC2.4 cells expressing soluble mB7h3-hIg showed a significant reduced allo-stimulatory capability as compared with the controls determined by MLC. Further studies revealed that soluble mB7h3-hIg could also inhibit IL-2 and IFN-γ, production of allogenic T cells. These results suggested a great potential of soluble B7-H3 for treatment of graft rejection and autoimmume disease. Cellular ＆ Molecular Immunology. 2006;3（3）：235-240.

关键词： B7-H3 dendritic cell T cell proliferation IL-2 IFN-γ

Application of numerical modeling and genetic programming to estimate rock mass modulus of deformation

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International Journal of Mining science and Technology 2013年第5期23卷 733-737页

作者： Ebrahim Ghotbi Ravandi Reza Rahmannejad Amir Ehsan feili Monfared Esmaeil Ghotbi Ravandi Mineral Industries Research Center Shahid Bahonar University of Kerman Mining Engineering Department Shahid Bahonar University of Kerman Chemical Engineering Department Shahid Bahonar University of Kerman Civil Engineering Department Shahid Bahonar University of Kerman

Estimation of the rock mass modulus of deformation(Em)is one of the most important design parameters in designing many structures in and on *** parameter can be obtained by in situ tests,empirical relations between deformation modulus and rock mass classifcation,and estimating from laboratory tests *** this paper,a back analysis calculation is performed to present an equation for estimation of the rock mass modulus of deformation using genetic programming(GP)and numerical modeling.A database of 40,960 datasets,including vertical stress(rz),horizontal to vertical stresses ratio(k),Poisson’s ratio(m),radius of circular tunnel(r)and wall displacement of circular tunnel on the horizontal diameter(d)for input parameters and modulus of deformation for output,was *** selected parameters are easy to determine and rock mass modulus of deformation can be obtained from instrumentation data of any size circular *** resulting RMsE of 0.86 and correlation coeffcient of97%of the proposed equation demonstrated the capability of the computer program(CP)generated by GP.

关键词： Modulus of deformation(Em) Displacement Numerical modeling Genetic programming(GP) Back analysis

脑卒中护理门诊偏瘫患者康复需求评估量表的编制和信效度检验

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护理管理杂志 2024年第1期24卷 44-49页

作者：曾秋霞李飞丽钟华胡安梅朱利莉曾登芬重庆市中医院针灸科 400021 重庆市中医院护理部 400021 解放军总医院第四医学中心护理部北京市100048

目的编制并检验脑卒中护理门诊偏瘫患者康复需求评估量表,为有效评估患者康复需求提供适用性测评工具。方法采用文献分析、半结构访谈、专家函询、预调查形成初始量表。对重庆市3所三级甲等医院脑卒中护理门诊随访管理的430例脑卒中偏... 详细信息

目的编制并检验脑卒中护理门诊偏瘫患者康复需求评估量表,为有效评估患者康复需求提供适用性测评工具。方法采用文献分析、半结构访谈、专家函询、预调查形成初始量表。对重庆市3所三级甲等医院脑卒中护理门诊随访管理的430例脑卒中偏瘫患者开展调查,检验量表信效度,形成正式量表。结果康复需求评估量表包括5个维度31个条目,探索性因子分析提取5个公因子,累积方差贡献率为67.735%;总量表的内容效度为0.923;量表总的Cronbach'sα系数为0.960,折半信度为0.940,重测信度为0.953。结论脑卒中护理门诊偏瘫患者康复需求评估量表具有良好的信效度,可用于脑卒中护理门诊出诊护士评估偏瘫患者的康复需求。

关键词：脑卒中偏瘫护理门诊康复需求量表信度效度