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右美托咪定对坐骨神经联合股神经阻滞麻醉膝关节置换术患者的镇静效果

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中国医药 2016年第6期11卷 874-876页

作者：薛利军李继周高彦东高静高素琴张利佳陕西省榆林市第一医院麻醉科 719000

目的探讨右美托咪定对坐骨神经联合股神经阻滞麻醉膝关节置换术患者的镇静效果。方法选择2014年3—9月于陕西省榆林市第一医院行膝关节置换术患者80例，根据随机数字表法分为右美托咪定组和对照组，各40例。坐骨神经联合股神经阻滞麻醉... 详细信息

目的探讨右美托咪定对坐骨神经联合股神经阻滞麻醉膝关节置换术患者的镇静效果。方法选择2014年3—9月于陕西省榆林市第一医院行膝关节置换术患者80例，根据随机数字表法分为右美托咪定组和对照组，各40例。坐骨神经联合股神经阻滞麻醉后，右美托咪定组患者给予右美托咪定0．5汕g／kg（输注10min）后以0．4mg／（kg·h）维持；对照组患者静脉注射等剂量的0．9％氯化钠注射液。记录给药前（R）、给药后15min（T1）、手术开始后15min（T2）、30min（T3）、45min（T4）、术毕（T5）及术后1h（T6）患者心率、平均动脉压、脑电双频指数（BIS）值、Ramsay镇静评分及不良反应发生情况。结果T。～L时点，右美托咪定组心率和BIS值均明显低于对照组[心率：（61±7）次／min比（70±8）7次／min、（57±5）L次／min比（73±10）次／min、（55±10）次／min比（70±12）次／min、（60±6）次／min比（73±16）0；／rain、（64±16）次／min比（77±10）次／min，BIS值：（68±lo）比（93±4）、（60±16）比（92±6）、（63±11）比（93±5）、（58±10）比（92±6）、（80±6）比（94±3）]和T0时点[（76±13）次／min、（95±4）]，Ramsay镇静评分明显高于对照组[（3．0±0．5）分比（2．0±0．0）分、（4．0±0．0）分比（2．0±0．0）分、（4．0±0．0）分比（2．0±0．0）分、（4．0±0．0）分比（2．0±0．0）分、（3．0±0．0）分比（2．0±0．0）分]和Tn时点[（2．0±0．0）分]，差异均有统计学意义（均P〈0．05）。T1～T4时点，右美托咪定组和对照组患者平均动脉压均明显低于T0时点[（72±11）、（75±14）、（66±12）、（65±13）mmHg（1mmHg=0．133kPa）比（85±10）mmHg，（74±12）、（75±14）、（76±15）、（73±16）mmHg比（86±8）mmHg]，且T3、T4时点，右美托咪定组平均动脉压明显低于对照组，差异均有统计学意义（均P〈0．05）。右美托咪定组和对照组心动过缓和止血带反应发生率比较[12．5％（5／40）比0．0％（0／40），0．0％（0／40）比17．5％（7／40）]，差异均有统计学意义（均P〈0．05）。结论右美托咪定对坐骨神经联合股神经阻滞麻醉膝关节置换术患者的镇静效果确切，血流动力学稳定，不良反应少。

关键词：膝关节置换术右美托咪定坐骨神经阻滞股神经阻滞

Transient thermo-mechanical analysis for bimorph soft robot based on thermally responsive liquid crystal elastomers

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Applied Mathematics and Mechanics(English Edition) 2019年第7期40卷 943-952页

作者： Yun CUI Yafei YIN Chengjun WANG K. SIM Yuhang li Cunjiang YU jizhou SONG Institute of Solid Mechanics Beihang University Beijing 100191 China Department of Engineering Mechanics Soft Matter Research Center Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Zhejiang University Hangzhou 310027 China Materials Science and Engineering Program University of Houston Houston TX 77204 U. S.A. State Key Laboratory of Strength and Vibration of Mechanical Structures School of Aerospace Engineering Xi’an Jiaotong University Xi’an 710049 China Department of Mechanical Engineering University of Houston Houston TX 77204 U. S.A. Department of Electrical and Computer Engineering University of Houston Houston TX 77204 U. S.A. Department of Biomedical Engineering Texas Center for Superconductivity University of Houston Houston TX 77204 U. S.A.

Thermally responsive liquid crystal elastomers (LCEs) hold great promise in applications of soft robots and actuators because of the induced size and shape change with temperature. Experiments have successfully demonstrated that the LCE based bimorphs can be effective soft robots once integrated with soft sensors and thermal actuators. Here, we present an analytical transient thermo-mechanical model for a bimorph structure based soft robot, which consists of a strip of LCE and a thermal inert polymer actuated by an ultra-thin stretchable open-mesh shaped heater to mimic the unique locomotion behaviors of an inchworm. The coupled mechanical and thermal analysis based on the thermo-mechanical theory is carried out to underpin the transient bending behavior, and a systematic understanding is therefore achieved. The key analytical results reveal that the thickness and the modulus ratio of the LCE and the inert polymer layer dominate the transient bending deformation. The analytical results will not only render fundamental understanding of the actuation of bimorph structures, but also facilitate the rational design of soft robotics.

关键词： transient thermo-mechanical analysis soft robot thermal-responsive liq- uid crystal elastomer (LCE)

Bypass-Enabled Thread Compaction for Divergent Control Flow in Graphics Processing Units

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Journal of Shanghai Jiaotong university(Science) 2021年第2期26卷 245-256页

作者： li Bingchao WEI Jizeng GUO Wei SUN jizhou College of Computer Science and Technology Civil Aviation University of ChinaTianjin 300300China College of Intelligence and Computing Tianjin UniversityTianjin 300350China

Graphics processing units(GPUs)employ the single instruction multiple data(SIMD)hardware to run threads in parallel and allow each thread to maintain an arbitrary control *** running concurrently within a warp may jump to different paths after conditional *** divergent control flow makes some lanes idle and hence reduces the SIMD utilization of *** alleviate the waste of SIMD lanes,threads from multiple warps can be collected together to improve the SIMD lane utilization by compacting threads into idle ***,this mechanism induces extra barrier synchronizations since warps have to be stalled to wait for other warps for compactions,resulting in that no warps are scheduled in some *** this paper,we propose an approach to reduce the overhead of barrier synchronizat ions induced by compactions,In our approach,a compaction is bypassed by warps whose threads all jump to the same path after ***,warps waiting for a compaction can also bypass this compaction when no warps are ready for *** addition,a compaction is canceled if idle lanes can not be reduced via this *** experimental results demonstrate that our approach provides an average improvement of 21%over the baseline GPU for applications with massive divergent branches,while recovering the performance loss induced by compactions by 13%on average for applications with many non-divergent control flows.

关键词： graphics processing unit(GPU) single instruction ultiple data(SIMD) thread warps bypass

安徽蒙城西贾庄金铅锌多金属矿床成矿期次及成矿岩体年代学研究

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华东地质 2024年第3期45卷 318-331页

作者：李斌黄寄洲李仁和陈广涛张赞赞安徽省地质调查院(安徽省地质科学研究所) 安徽合肥230001 安徽省地球物理地球化学勘查技术院安徽合肥230022

西贾庄金铅锌多金属矿床是近年来在蚌埠隆起西段新发现的多金属矿床,该矿床的发现实现了皖西北深覆盖区的找矿突破。开展成矿期次及矿区成矿岩体年代学研究,对该矿床的成因、找矿方向及区域成矿规律认识具有重要意义。文章通过详细的野... 详细信息

西贾庄金铅锌多金属矿床是近年来在蚌埠隆起西段新发现的多金属矿床,该矿床的发现实现了皖西北深覆盖区的找矿突破。开展成矿期次及矿区成矿岩体年代学研究,对该矿床的成因、找矿方向及区域成矿规律认识具有重要意义。文章通过详细的野外地质调查和室内镜下鉴定,依据矿物的生成时代、交生关系及围岩蚀变与矿化之间的关系,将金铅锌多金属成矿作用划分为3个成矿期(矽卡岩期、热液期和表生期)和6个成矿阶段(早期无水简单矽卡岩阶段、晚期含水复杂矽卡岩阶段、石英硫化物阶段、早期碳酸盐阶段、晚期碳酸盐阶段和表生阶段),其中石英硫化物阶段和早期碳酸盐阶段是主要的成矿阶段。利用激光剥蚀-电感耦合等离子体质谱(LA-ICP-MS)锆石U-Pb定年方法,获得了矿区主要成矿岩体花岗闪长斑岩和石英二长斑岩的成岩年龄分别为(114.77±0.48)Ma和(113.70±0.51)Ma,表明西贾庄金铅锌多金属矿床形成于早白垩世晚期。

关键词：西贾庄金铅锌矿床成矿期次锆石U-Pb定年蚌埠隆起安徽蒙城

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Tailoring the electronic acceptor–donor heterointerface between black phosphorus and Co_(3)O_(4) for boosting oxygen bifunctional electrocatalysis

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Chinese Chemical Letters 2023年第2期34卷 284-289页

作者： Jing Zou Yilun Zou Haitao Wang Wei Wang Pingxiu Wu Arramel jizhou Jiang Xin li School of Chemistry and Environmental Engineering School of Environmental Ecology and Biological EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Tree Gorges LaboratoryWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and TechnologyYueyang 414006China Semiconductor Electronic Special Gas of Hubei Engineering Research Center Jingzhou 434000China Nano Center Indonesia Jl.PUSPIPTEK Tangerang SelatanBanten 15314Indonesia Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

Black phosphorus (BP) as an uprising two-dimensional material exhibits attractive potential in the field of electrocatalysis due to the inherent advantages of high carrier mobility and abundant lone pair ***,the exposed active electrons compel BP to be deactivated by oxidative ***,the electronic signature of acceptor-donor heterointerfacial interactions between BP and Co_(3)O_(4)is realized via wet ball *** preferential migration of active electrons from BP to Co_(3)O_(4)is achieved at the heterointerface since the Fermi level of BP is higher than that of Co_(3)O_(4).Such relative energetic consideration promotes reasonable oxygen electrocatalytic active ***,it significantly suppresses the oxidative degradation of ***,the resulting Co_(3)O_(4)/BP heterojunction possesses superior oxygen bifunctional electrocatalytic activity than its parent *** importantly,this work promotes an efficient route towards BP-based multifunctional catalysts.

关键词： Electronic acceptor-donor Black phosphorus Co_(3)O_(4) Charge transfer Oxygen bifunctional electrocatalysis

基于WEP-QTP模型的近65 a黄河源区径流演变分析

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人民黄河 2024年第2期46卷 41-48页

作者：李霞周祖昊刘佳嘉夏军强王康李佳王鹏翔尤继洲王浩贾仰文中国水利水电科学研究院流域水循环模拟与调控国家重点实验室北京100038 武汉大学水资源工程与调度全国重点实验室湖北武汉430072 水利部南水北调规划设计管理局北京100038 中国长江三峡集团有限公司科学技术研究院北京100038

为研究黄河源区径流演变规律,以WEP-QTP(The Water and Energy transfer Processes in the Qinghai⁃Tibet Plateau)模型为基础构建基于水热耦合的黄河源区冻土水文模型。采用玛曲站2019—2021年冻融期逐日土壤温度及土壤液态含水率对模... 详细信息

为研究黄河源区径流演变规律,以WEP-QTP(The Water and Energy transfer Processes in the Qinghai⁃Tibet Plateau)模型为基础构建基于水热耦合的黄河源区冻土水文模型。采用玛曲站2019—2021年冻融期逐日土壤温度及土壤液态含水率对模型进行验证,率定期及验证期决定系数(R2)均值为0.8左右,均方根误差(RMSE)均值分别为1.0℃及0.04左右;采用8个冻土监测点1971—2000年冻融期逐日冻土深度进行验证,决定系数(R2)均值为0.89,均方根误差(RMSE)均值为214.81 mm。模型模拟黄河源区1956—2020年逐月流量过程,效率系数(NSE)为0.8左右,相对误差(RE)为5%左右,表明模型能较好地模拟黄河源区径流过程。利用M-K趋势检验分析得到1956—2020年黄河源区径流呈不显著增加趋势,其变化趋势是降水与气温共同影响的结果。冻融期、非冻融期径流与全年趋势一致。降水增加、气候变暖及冻土退化使径流组分发生变化,地表径流及地下径流均呈增加趋势,但地下径流在全年及冻融期增加趋势更加显著。

关键词：径流演变冻融期非冻融期 WEP-QTP模型黄河源区

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Switchable dry adhesive based on shape memory polymer with hemispherical indenters for transfer printing

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Theoretical & Applied Mechanics Letters 2021年第6期11卷 375-379页

作者： Hongyu Luo Chenglong li Chuanqian Shi Shuang Nie jizhou Song Department of Engineering Mechanics Soft Matter Research Centerand Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceZhejiang UniversityHangzhou 310027China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China

Transfer printing based on switchable adhesive is essential for developing unconventional systems,including flexible electronics,stretchable electronics,and micro light-emitting diode(LED)*** we report a design of switchable dry adhesive based on shape memory polymer(SMP)with hemispherical indenters,which offers a continuously tunable and reversible adhesion through the combination of the preloading effect and the thermal actuation of *** and numerical studies reveal the fundamental aspects of design,fabrication,and operation of the switchable dry *** of this adhesive concept in transfer printing of flat objects(e.g.,silicon wafers),three-dimensional(3D)objects(e.g.,stainless steel balls),and rough objects(e.g.,frosted glasses)in two-dimensional(2D)or 3D layouts illustrate its unusual manipulation capabilities in heterogeneous material integration applications.

关键词： Switchable dry adhesive Shape memory polymer Transfer printing

Biofilm inhibition mechanism of BiVO4 inserted zinc matrix in marine isolated bacteria

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Journal of Materials Science & Technology 2021年第16期75卷 86-95页

作者： Xiaofan Zhai Peng Ju Fang Guan jizhou Duan Nan Wang Yimeng Zhang Ke li Baorong Hou CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of Oceanology Chinese Academy of Sciences Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology (Qingdao) Center for Ocean Mega-Science Chinese Academy of Sciences Key Laboratory of Marine Eco-Environmental Science and Technology Marine Bioresource and Environment Research Center First Institute ofOceanography Ministry of Natural Resources (MNR) Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology (Qingdao)

Biofilm plays an important role on microbial corrosion and biofouling in marine environments. Inhibiting biofilm formation on construction surfaces is of great importance. Photocatalytic material with visiblelight response, especially BiVO4, is regarded as a promising material for biofilm inhibition due to its green biocidal effect and high antibacterial efficiency. Approaches which can immobilize the photocatalytic particles onto metal surfaces with high mechanical strength are requisite. In this study, zinc matrixes were served as carriers for BiVO4particles. The BiVO4-inserted zinc matrixes were successfully obtained by ultrasound assisted electrodeposition. The insertion content of BiVO4showed positive correlation with ultrasound power. Highly enhanced biofilm inhibition properties were obtained by BiVO4inserted zinc·matrixes with an over 95 % decreased bacterial coverage. It was proved that O2-(chief) andOH(subordinate) radicals were responsible for the high biocidal performance. Possible antibacterial mechanism was proposed, indicating that the photoinduced holes would both attack zinc crystals to generate active electrons to form O2-radicals, and react with H2O to generate·OH, finally. Furthermore, corrosion resistance of the matrixes was proved to be stable due to the insertion of BiVO4. This study provides a potential application for photocatalyst in marine antifouling and anti-biocorrosion aspects.

关键词： Biofilm inhibition BiVO 4 Zinc matrix BiVO 4 -Zn composite coating Marine antifouling Corrosion resistance

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一次春季冷锋过境引起的大风天气分析

气象与环境科学 2010年第3期33卷 41-47页

作者：马月枝王新红叶东张金平孟祥翼王兵李吉洲新乡市气象局河南新乡453003 辉县市气象局河南辉县453601

利用常规探测资料、地面加密观测资料及NCEP再分析资料,对2009年4月15日新乡罕见大风天气的天气形势及物理量场特征进行了诊断分析。结果表明:西伯利亚强冷空气南下与华北低压发展共同造成的强气压梯度、高低空强的冷平流是造成此次强... 详细信息

利用常规探测资料、地面加密观测资料及NCEP再分析资料,对2009年4月15日新乡罕见大风天气的天气形势及物理量场特征进行了诊断分析。结果表明:西伯利亚强冷空气南下与华北低压发展共同造成的强气压梯度、高低空强的冷平流是造成此次强风的主要原因;地面冷锋前的上升运动与高空急流入口区次级环流上升气流的叠加,为深对流发展提供了深厚的垂直环流发展条件;高空西风急流配合适合的垂直环流,产生动量下传,是超出一般强度的冷空气大风产生的原因;ECMWF和T639数值预报产品均成功地预报出了此次强风过程。

关键词：春季大风冷空气冷平流高空急流动量下传垂直螺旋度