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Effect of Isobutyl-triethoxy-silane Penetrative Protective Agent on the Carbonation Resistance of Concrete

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Journal of Wuhan University of Technology(Materials Science) 2016年第1期31卷 139-145页

作者：徐强詹树林 XU Bingzheng YANG Hui qian Xiaoqian DING Xiaofu College of Civil Engineering and Architecture Zhejiang University Hangzhou 310058 China Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China Zhejiang-California International NanoSystems Institute Hangzhou 310058 China Zhejiang Heli New Building Materials Co. Ltd Jinhua 321100 China

Effect of isobutyl-triethoxy-silane penetrative protective agent on the carbonation resistance of the concrete was *** concrete specimens for the 28 d accelerated carbonation process were manufactured with w/c of 0.49 and 0.64,both in the presence and absence of silane and mineral *** penetration of isobutyl-triethoxy-silane and the carbonation of concrete were investigated by penetration depth,carbonation depth,XRD,SEM,and pore size *** results showed that concrete compactness played an important role in the silane penetration and carbonation *** depth of silane-treated concrete mainly depended on the compactness of the concrete,and could not remarkably change through the accelerated carbonation *** the accelerated carbonation process,penetrative protective agent improved the carbonation resistance of the higher compactness concretes but accelerated the carbonization process of the lower compactness *** penetrative protective agent penetrated along the external connectivity pores into concrete not filling the entire surface area,the inorganic film could not fully protect the Ca（OH）_2 phase from *** 28 d accelerated carbonation,fibrous hydration products disappeared and the surface holes *** to the formation of carbonized products,the porosity of the concrete surface decreased,especially in high-strength concrete.

关键词： carbonation resistance penetrative protective agent isobutyl-triethoxy-silane mineral admixture marine material

A physical approach of the short-term wind power prediction based on CFD pre-calculated flow fields

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Journal of Hydrodynamics 2013年第1期25卷 56-61页

作者： LI Li LIU Yong-qian YANG Yong-ping HAN shuang WANG Yi-mei State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University School of Energy and Power Engineering Shandong University

A physical approach of the wind power prediction based on the CFD pre-calculated flow fields is proposed in this paper. The flow fields are obtained based on a steady CFD model with the discrete inflow wind conditions as the boundary conditions, and a database is established containing the important parameters including the inflow wind conditions, the flow fields and the corresponding wind power for each wind turbine. The power is predicted via the database by taking the Numerical Weather Prediction （NWP） wind as the input data. In order to evaluate the approach, the short-term wind power prediction for an actual wind farm is conducted as an example during the period of the year 2010. Compared with the measured power, the predicted results enjoy a high accuracy with the annual Root Mean Square Error （RMSE） of 15.2% and the annual MAE of 10.80%. A good performance is shown in predicting the wind power＇s changing trend. This approach is independent of the historical data and can be widely used for all kinds of wind farms including the newly-built wind farms. At the same time, it does not take much computation time while it captures the local air flows more precisely by the CFD model. So it is especially practical for engineering projects.

关键词： short-term wind power prediction physical approach CFD model flow field database

Needleless Electrospinning:Reciprocation ***

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Fluid Dynamics & Materials Processing 2021年第6期17卷 1015-1019页

作者： Xiaoxia Li Manyu qian Dan Tian Jihuan He School of Textile Garment and Design Changshu Institute of TechnologySuzhouChina National Engineering Laboratory for Modern Silk College of Textile and Clothing EngineeringSoochow UniversitySuzhouChina School of Science Xi’an University of Architecture and TechnologyXi’anChina

Needleless electrospinning is a versatile method to produce *** particular,the rotary version of this technique has enjoyed widespread use because there is no need to clean the *** rotation speed is limited by the potential deviation of the jet due to the centrifugal *** limitations are due to the fast volatilization of the solvent from the opened spinning *** order to overcome these drawbacks,here a novel reciprocating system based on a moving spinning-plate is *** spinning process is implemented in a half-closed system with the spinning-plate immersed in the solution *** the immersed spinning-plate moves up from the solution tank,multiple jets are ejected from the droplets on the tips of the spinning-plate under the effect of an electric field *** morphology of the obtained nanofibers has been analyzed by scanning electron *** results indicated that the obtained fibers are uniform in structures and small in *** issues of needle clogging and intense solvent evaporation can be mitigated using this alternate approach.

关键词： Needleless electrospinning reciprocation spinning-plate nanofibers

Quality of Life in Cancer Patients with Pain in Beijing

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Chinese Journal of Cancer Research 2012年第1期24卷 60-66页

作者： Ping Yang Li-qiu Sun qian lu Dong Pang Yue Ding Department of Medical&Surgical Nursing Peking University School of NursingBeijing 100191China Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education) Department of NursingPeking University School of OncologyBeijing Cancer Hospital&InstituteBeijing 100142China

Objective： To investigate the quality of life （QOL） of cancer pain patients in Beijing, and explore the effect of cancer pain control on patients＇ QOL. Methods： Self-developed demographic questionnaire, numeric rating scale and SF-36 questionnaire were used together among 643 cancer pain patients in 28 Grade 2nd to 3rd general hospitals and 2 Grade 3rd cancer hospitals. Results： The SF-36 eight dimensions scores ranged from 31.75 to 57.22 in these cancer pain patients. The t test and Wilcoxon rank sum test were used to compare the QOL between pain controlled （PC） group and pain uncontrolled （PUC） group, and the results showed that patients in PC group had the higher O, OL scores in 6 areas of SF-36 （P〈0.05）. Binary logistic regression results found that pain management satisfaction scores （P〈0.001）, family average personal monthly income （P=0.029）, current receiving chemotherapy （P=0.009） and cancer stage （P〈0.001） were the predictors to cancer pain controlled results. Conclusion： Cancer patients with pain in Beijing had poor QOL. Pain control will improve the QOL of cancer pain patients.

关键词： Cancer patients Cancer related pain Quality of life (QOL)

Preparation of Anti-cardiac Troponin I Monoclonal Antibodies and Their Characterization with Surface Plasmon Resonance Biosensor

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Chemical Research in Chinese Universities 2003年第2期19卷 183-189页

作者： WEIJing-yan LIUXia SONGDa-qian BULi-sha HUXing MUYing KeyLaboratoryofMolcularEnzymologyandEngineeringofministryofEducation JilinUniversityChangchun130023P.R.China CollegeofChemistry JilinUniversityChangchun130023P.R.China ThethirdClinicalCollege JilinUniversityChangchun130031P.R.China

Cardiac troponin I(cTnI) was separated and purified from human left ventricular tissue by affinity chromatographic method and used to immunize Balb/c mice by intraperitoneal injection and four hybridoma cell lines, which secreted monoclonal antibody(mAb) against human cTnI, were obtained by cell fusion, identification and cloning twice. Three mAbs(9F5, 2F11, 8C12) were produced from the ascites of Balb/c mice injected intraperitoneally the hybridoma cells and characterized by means of a surface plasmon resonance(SPR) biosensor. An optimal and specific sensing membrane for troponin I was prepared with staphylococcal protein A(SPA) as the intermediate layer and mAb against human cTnI as the capture antibody. On the basis of the sensing membrane, two modes of operation of the SPR biosensor were developed, i.e ., a direct detection of antigen antibody affinity and a sandwich assay. In the sandwich assay detection mode, the mAbs competition was measured by monitoring whether the secondary antibody had been attached to the cTnI already captured by the first antibody on the sensor surface. The SPR biosensor was shown to be able to directly detect the antigen antibody affinity and the order of the affinity was found to be 9F5>2F11>8C12. In the sandwich detection mode, it was found that the different epitopes on the cTnI molecules were recognized by the three mAbs respectively, but the asymmetrical competition was shown between 2F11 and 8C12 and no competition was found between 9F5 and 2F11 or 8c12. Based on these results, a double monoclonal sandwich immunoassay for cTnI was developed by using the optimal antibody pair of 9F5 and 2F11 and the SPR biosensor with SPA substrate membrane, which showed an excellent sensitivity of 0.8 μg/L for both the buffer and the serum samples compared with the direct detection of cTnI for the buffer with the lowest detection limit of 4 μg/L and conventional ELISA with the sensitivity of 1.9 μg/L.

关键词： Troponin I Monoclonal antibodies Characterization SPR biosensor

Design of fast adaptive readout system for wire scanners

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Nuclear Science and Techniques 2018年第1期29卷 45-51页

作者： qian-shun She Yi qian Jie Kong Hai-Bo Yang Hong-Yun Zhao Jing-Zhe Zhang Xiao-Yang Niu Jun-Xia Wu Hong Su Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049China

A new wide-range fast readout system capable of adaptive identification is designed for wire scanners,which are used to measure beam profiles and *** system is capable of handling varying current signals with Gaussian distributions and current pulses up to 1000 counts/s, as well as an input current range of 1 n A–1 m A. When tested, the resolution was found to exceed 3.68% for full scale, the nonlinearity was found to be less than 0.11%, and the measurement sensibility was found to be less than 5 p A. We believe that the system will play a crucial role in improving the measurement accuracy of beam diagnosis and the efficiency of accelerator operation,as well as decreasing the time required for beam *** system was applied to the beam diagnosis of an injector II prototype for an accelerator-driven subcritical system and produced excellent measurement results. A description of the adaptive fast readout system for wire scanners is presented in this paper.

关键词： Wire scanner Weak current measurement Adaptive identification Front-end readout electronics Beam diagnosis

钆延迟强化联合纵向弛豫时间定量成像评估心肌淀粉样变性的价值

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中华危重病急救医学 2019年第12期31卷 1538-1541页

作者：崔倩于静沈文天津市第一中心医院放射科 300192

目的探讨钆延迟强化(LGE)联合纵向弛豫时间定量成像(T1 mapping)对心肌淀粉样变性的诊断价值.方法选择2018年5月至2019年3月在天津市第一中心医院通过肾活检确诊的轻链型(AL)淀粉样变性而发生急性心力衰竭(心衰)怀疑累及心脏的心肌淀粉... 详细信息

目的探讨钆延迟强化(LGE)联合纵向弛豫时间定量成像(T1 mapping)对心肌淀粉样变性的诊断价值.方法选择2018年5月至2019年3月在天津市第一中心医院通过肾活检确诊的轻链型(AL)淀粉样变性而发生急性心力衰竭(心衰)怀疑累及心脏的心肌淀粉样变性患者9例,以及同一时段检查的非梗阻性肥厚型心肌病患者14例,以同期12例健康体检者作为对照.用飞利浦Ingenia 3.0 T进行心脏检查,平扫包括电影序列、T2加权成像(T2WI)、增强前T1 mapping,增强检查包括首过灌注、延迟增强及增强后T1 mapping;对比剂用钆喷酸葡胺注射液,首过灌注0.1 mL/kg,以相同速度追加生理盐水20 mL,延迟7 min开始扫描延迟增强序列,包括4层2腔心位和4腔心位.观察LGE联合T1 mapping的心脏磁共振成像(CMRI)检查结果,包括心功能指标〔左心室舒张期末容积(LVEDV)、左心室收缩期末容积(LVESV)、左室射血分数(LVEF)、瓣膜反流〕、心脏形态学指标〔包括左室壁厚度、左心室质量(LVM)〕、心肌组织学特点及心肌标志物N末端脑钠肽前体(NT-proBNP)和伴随征像(包括心包积液、胸腔积液).结果心肌淀粉样变性患者的CMRI影像学可以表现为左心室斑片状强化、心内膜下条状强化、心内膜下弥漫强化,有时可延伸到心外膜及不典型的异常延迟强化.9例(100%)心肌淀粉样变性患者均有延迟强化,其中3例为左室壁斑片状强化,3例为左心室心内膜弥漫强化,2例为局限性心内膜下强化,1例为不典型异常延迟强化.心肌淀粉样变性组增强前T1值明显高于健康对照组和肥厚型心肌病组(ms:1497.3±22.0比1273.3±30.1、1329.3±42.6,均P0.05).有3例心肌淀粉样变性患者化疗1个周期后复查CMRI平扫的增强前T1 mapping,显示化疗后T1值与化疗前无明显差异(ms:1484.8±6.5比1497.3±22.0,P=0.11).结论一站式CMRI检查可以提高心肌淀粉样变性的诊断效力,LGE可以显示心肌瘢痕及纤维化,T1 mapping对心肌水肿及弥漫纤维化很敏感,LGE与T1 mapping联合可提高诊断准确性,对诊断和随访患者治疗很有意义.

关键词：钆延迟强化纵向弛豫时间定量成像心肌淀粉样变性急性心力衰竭

陕渝黔桂1800km超长探测剖面重力异常场特征及深部地壳结构探榷

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地球物理学报 2016年第11期59卷 4139-4152页

作者：王谦身滕吉文张永谦陈石文武皮娇龙马学英中国科学院地质与地球物理研究所北京100029 吉林大学地球探测科学与技术学院长春130026 中国地质科学院矿产资源研究所北京100037 中国地震局地球物理研究所北京100081

通过对跨越华北克拉通、秦岭造山带、扬子克拉通几大地质构造单元的,北起陕西榆林经秦岭过重庆鱼泉、贵州贵阳并向南到广西凭祥全长1810km超长重力探测剖面的数据进行处理分析和解释,构建了沿剖面的二维地壳密度结构模型,并详细分析了... 详细信息

通过对跨越华北克拉通、秦岭造山带、扬子克拉通几大地质构造单元的,北起陕西榆林经秦岭过重庆鱼泉、贵州贵阳并向南到广西凭祥全长1810km超长重力探测剖面的数据进行处理分析和解释,构建了沿剖面的二维地壳密度结构模型,并详细分析了沿剖面壳内各界面与Moho界面展布的深部结构和构造特征、构划出了该剖面的深部断裂分布,探讨了剖面辖区跨越的克拉通、造山带、接触带或耦合带等一系列的区域构造的差异,同时对其可能的地质构造含义进行初步了解释,以期能对深化认识该剖面跨越地区的地壳结构、构造单元划分及动力学等研究,提供相关重力场的依据.

关键词：陕—渝—黔—桂重力异常场地壳密度结构

Giant tumor resection under ultrasound-guided nerve block in a patient with severe asthma:A case report

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World Journal of Clinical Cases 2022年第10期10卷 3200-3205页

作者： qian Liu Qing Zhong Ni-Na Zhou Ling Ye Department of Pain Management West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Anesthesiology The People's Hospital of Jianyang CityJianyang 610041Sichuan ProvinceChina Department of Anesthesiology Zigong First People’s HospitalZigong 643000Sichuan ProvinceChina

BACKGROUND General anesthesia in critically ill patients is associated with increased risk of *** block anesthesia is an alternative,but could be challenging in cases with surgical field that involves multiple *** SUMMARY We report resection of a giant lipoma in the left shoulder and upper back under supraclavicular brachial plexus block plus T3-4 paravertebral block in an older patient with severe asthma.A 70-year-old patient presented with a slow-growing giant mass(25,15 and 5 cm in length,width and depth,respectively)that extended from the lateral side of the left scapula to the axillary midline,and from the T5 thoracic vertebra intercostal to the mid-medial section of the left upper *** had sharp intermittent pain over the mass for the past 7 *** patient also had severe bronchial asthma for the past 8 years.A pulmonary function test revealed only 20%of the predicted forced expiratory volume in 1 second(FEV1,0.49 L).After controlling asthma with glucocorticoid,the tumor was resected under ultrasound-guided supraclavicular brachial plexus block and T3-4 paravertebral *** surgery was completed without *** Ultrasound-guided regional nerve block is a viable alternative for patients with poor cardiopulmonary function undergoing shoulder,back and axillary surgery.

关键词： Ultrasound Giant tumor Brachial plexus block Paravertebral block Case report