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Applied Mathematics and Mechanics(English Edition) 2021年第3期42卷 371-386页

作者： Bing YAN Bo CHEN Fanyun LiU Jiankang wu Yongliang XiONG School of Civil Engineering and Mechanics Huazhong University of Science and TechnologyWuhan 430074China

The dielectrophoretic technology has been one of the most frequently applied microfluidic technologies to manipulate *** way of a combination of controlled electroosmotic micro-vortices and dielectrophoresis to manipulate particles of different sizes was proposed in our previous ***,the thickness of the modulating electrode is *** practice,when the thickness of the modulating electrode increases,the channel flux increases,while the ability of the vortex to capture the particles *** this study,a new method combining the field-modulating electroosmotic vortex and the insulating post is proposed to improve the manipulating capability of the field-modulated electroosmotic vortex to *** results indicate that there are three great advantages as the insulating post is placed on the channel wall on the same side of the modulating ***,the capturing ability of the vortex to particles is greater due to the reduction of channel flux and the squeezing ***,the range of regulating channel flux to achieve the optimal separation is ***,the separation efficiency improves since the perfect separation can be achieved at a higher flow ***,the effects of the location and the size of the insulating post on particle separation are analyzed in *** present work could provide the reference for the application of the dep technology.

关键词： electroosmotic vortex dielectrophoresis(dep) insulating post particle separation

Complete convergence for arrays of rowwise negatively superadditive-dependent random variables and its applications

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Applied Mathematics(A Journal of Chinese Universities) 2016年第4期31卷 439-457页

作者： wu Yi WANG Xue-jun HU Shu-he School of Mathematical Sciences Anhui University

in this paper, an exponential inequality for the maximal partial sums of negatively superadditive-dependent （NSD, in short） random variables is established. By uSing the exponen- tial inequality, we present some general results on the complete convergence for arrays of rowwise NSD random variables, which improve or generalize the corresponding ones of Wang et al. [28] and Chen et al. [2]. in addition, some sufficient conditions to prove the complete convergence are provided. As an application of the complete convergence that we established, we further investigate the complete consistency and convergence rate of the estimator in a nonparametric regression model based on NSD errors.

关键词： exponential inequality, complete convergence, negatively superadditive-dependent random vari-ables nonparametric regression model, complete consistency.

Time Optimization of Multiple Knowledge Transfers in the Big Data Environment

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Computers, Materials & Continua 2018年第3期54卷 269-285页

作者： Chuanrong wu Evgeniya Zapevalova Yingwu Chen Feng Li School of Economy and Management Changsha University of Science&TechnologyChangsha410114P.R.China College of information System and Management National University of Defense TechnologyChangsha410073China School of Computer&Communication Engineering Changsha University of Science&TechnologyChangsha410114China

in the big data environment, enterprises must constantly assimilate big dataknowledge and private knowledge by multiple knowledge transfers to maintain theircompetitive advantage. The optimal time of knowledge transfer is one of the mostimportant aspects to improve knowledge transfer efficiency. Based on the analysis of thecomplex characteristics of knowledge transfer in the big data environment, multipleknowledge transfers can be divided into two categories. One is the simultaneous transferof various types of knowledge, and the other one is multiple knowledge transfers atdifferent time points. Taking into consideration the influential factors, such as theknowledge type, knowledge structure, knowledge absorptive capacity, knowledge updaterate, discount rate, market share, profit contributions of each type of knowledge, transfercosts, product life cycle and so on, time optimization models of multiple knowledgetransfers in the big data environment are presented by maximizing the total discountedexpected profits (deps) of an enterprise. Some simulation experiments have beenperformed to verify the validity of the models, and the models can help enterprisesdetermine the optimal time of multiple knowledge transfer in the big data environment.

关键词： Big data knowledge transfer time optimization dep simulation experiment

Effects of Chip Geometries on Dielectrophoresis and Electrorotation investigation

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Chinese Journal of Mechanical Engineering 2014年第1期27卷 103-110页

作者： REN Yukun wu Hongchi FENG Guojing HOU Likai JiANG Hongyuan School of Mechatronics Engineering Harbin Institute of Technology State Key Laboratory of Fluid Power Transmission and Control Zhejiang University The First Affiliated Hospital Harbin Medical University

The electric fields employed for such work are generated using chips, such as planar linear interdigitated arrays or two parallel arrays. However, chip geometries usually affect the investigation of dielectrophoresis （dep） and electrorotation （ER） significantly, and even may misdirect the theoretical prediction. in order to understand the electrodes geometries effect and provide a suitable range of parameters, three-dimensional simulations for the dep and ER characterizations on the quadrupolar hyperbolical electrodes are carried out. influences of the electrodes gaps, cell height, work region, energized voltage and frequencies for the dep and ER manipulations are analyzed, and the analysis results show that the gaps of the electrodes and the cell height have enormous effects, but the work region is not so important. Moreover, depending on the theoretical analysis, ER experiments for polystyrene microspheres with the diameter of 20 ~m are carried out on two kinds of chips. The experimental results show that the microspheres rotate in the counter-field direction and the maximum rotation speed appears in the megahertz range. in addition, the experimental results are compared with the simulation results, showing that the three-dimensional simulations considering the chip geometries are more accurate than the two-dimensional predictions. This paper provides a new understanding for the theoretical predictions of dep and ER manipulations, which decreases the difference of the theoretical and experimental results significantly, and will be significant for the lab chip research.

关键词： dielectrophoresis electrorotation chip geometries

血清Ehrlich呈色反应用于筛诊胃癌和非癌胃疾患的临床意义

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福建医学院学报 1986年第2期 35-38页

作者：吴长珠李文展福建医学院生物化学教研室

我们曾报导采用血清Ehrlich呈色反映可作为筛诊癌瘤的一种简易方法,并发现胃癌检出阳性率最高、达78.9％,为进一步评价本法在筛诊胃癌与非癌胃疾患的临床实用意义,近年来我们又采用改良Nixon氏法测定各种胃疾患者173例,正常人21例,共19... 详细信息

我们曾报导采用血清Ehrlich呈色反映可作为筛诊癌瘤的一种简易方法,并发现胃癌检出阳性率最高、达78.9％,为进一步评价本法在筛诊胃癌与非癌胃疾患的临床实用意义,近年来我们又采用改良Nixon氏法测定各种胃疾患者173例,正常人21例,共194例血清样本,以O·D(光密度)>0.36为Ehrlich呈色反应阳性,结果表明,胃癌组与非癌胃疾患组的阳性率的差别极为显著(Pich阳性反应明显增加,因此本法可作为临床筛诊胃癌和非癌胃疾患的参考。

关键词：血清呈色反应胃癌非癌胃疾病诊断应用

肝细胞癌组织中depDC1B和KiF23的表达及其预后预测价值

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国际消化病杂志 2024年第2期44卷 119-125页

作者：王璨张雨相吴芳黄振夏湖南中医药高等专科学校附属第一医院/湖南省直中医医院检验科湖南株洲412008

目的探究肝细胞癌(HCC)组织中dep结构域蛋白1B(depDC1B)和驱动蛋白家族成员23(KiF23)的表达及其预后预测价值。方法选择2018年3月至2019年3月湖南中医药高等专科学校附属第一医院诊治的126例HCC患者作为研究对象,收集其HCC组织、癌旁组... 详细信息

目的探究肝细胞癌(HCC)组织中dep结构域蛋白1B(depDC1B)和驱动蛋白家族成员23(KiF23)的表达及其预后预测价值。方法选择2018年3月至2019年3月湖南中医药高等专科学校附属第一医院诊治的126例HCC患者作为研究对象,收集其HCC组织、癌旁组织及临床资料。采用免疫组织化学法检测组织中depDC1B和KiF23的蛋白表达情况。分析癌症基因组图谱(TCGA)数据库中HCC组织和癌旁组织中depDC1B和KiF23的mRNA表达水平差异。分析HCC组织中depDC1B和KiF23的蛋白表达与患者临床病理特征的相关性。采用Kaplan-Meier曲线(Log-rank检验)分析depDC1B和KiF23的蛋白表达与患者预后的关系。采用单因素及多因素COX比例风险模型分析HCC患者预后的危险因素。结果TCGA数据分析结果显示,HCC组织中depDC1B和KiF23的mRNA相对表达量均显著高于癌旁正常肝组织(1.861±1.271比0.314±0.116,1.652±1.089比0.218±0.157,P均depDC1B阳性表达主要位于细胞质和细胞膜,KiF23阳性表达主要位于细胞质和细胞核。HCC组织中depDC1B和KiF23的蛋白表达阳性率均显著高于癌旁组织[71.43%(90/126)比10.32%(13/126),χ^(2)=97.355,P=0.000;75.40%(95/126)比11.90%(15/126),χ^(2)=103.252;P=0.000]。HCC组织中depDC1B和KiF23的蛋白表达均与肿瘤分期、组织学分级及有无血管侵犯有关(P均depDC1B与KiF23的mRNA表达呈显著正相关(r=0.913,P=0.000),depDC1B与KiF23的蛋白表达亦呈显著正相关(Rs=0.811,P=0.000)。depDC1B阳性表达组的3年累积生存率显著低于depDC1B阴性表达组(χ^(2)=4.433,P=0.035)。KiF23阳性表达组的3年累积生存率显著低于KiF23阴性表达组(χ^(2)=6.125,P=0.013)。肿瘤分期Ⅱ~Ⅲ期、组织学分级Ⅲ级、血管侵犯、depDC1B阳性表达及KiF23阳性表达均是HCC患者预后的独立危险因素。结论HCC组织中depDC1B和KiF23的表达上调,两者均与肿瘤分期、组织学分级及有无血管侵犯有关,depDC1B、KiF23阳性表达均是HCC患者预后的独立危险因素。

关键词：肝细胞癌 dep结构域蛋白质1B 驱动蛋白家族成员23 临床意义

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玉米籽粒发育及影响因素的研究

贵州农学院学报 1991年第1期10卷 7-13页

作者：吴盛黎包林贵州农院农学系贵州农院食品科学系

玉米籽粒从受精到成熟,其长、宽、厚的变化,体积、鲜重和干重的增长曲线均表现“S”型。籽粒干重的增长可用Logistie方程拟和。玉米籽粒发育与品种、播期、温度和降雨量等关系密切。品种和播期影响籽柱灌浆速度、灌浆期长短和千粒重大... 详细信息

玉米籽粒从受精到成熟,其长、宽、厚的变化,体积、鲜重和干重的增长曲线均表现“S”型。籽粒干重的增长可用Logistie方程拟和。玉米籽粒发育与品种、播期、温度和降雨量等关系密切。品种和播期影响籽柱灌浆速度、灌浆期长短和千粒重大小。春玉米百粒干重的增长与日均温呈高度显著正相关r=0.7071068,夏玉米百粒干重增长与日均温呈高度极显著正相关r=0.7071068。降雨量与千粒重亦呈正相关。

关键词：玉米籽粒发育拟合相关分析

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基于视觉识别的机动车辆智能驾驶系统

计算机工程与应用 2004年第20期40卷 211-214页

作者：刘烽吴昌英毕文斌许家栋西北工业大学电子工程系西安710072

将机器人视觉原理运用于对机动车辆智能驾驶的研究中,通过识别高速公路车道线的变化,使得车辆能够实现自动驾驶。由CMOS图像传感器摄取道路图像,采用小波处理、线性递推估计、波门跟踪滤波和二次拟合抽取车道线信息,从而得到行驶控制误... 详细信息

将机器人视觉原理运用于对机动车辆智能驾驶的研究中,通过识别高速公路车道线的变化,使得车辆能够实现自动驾驶。由CMOS图像传感器摄取道路图像,采用小波处理、线性递推估计、波门跟踪滤波和二次拟合抽取车道线信息,从而得到行驶控制误差;控制命令通过串行232口发送到单片机上,驱动步进电机带动游戏杆转动来仿真实际的自动驾驶过程;获得了很好的实验结果。

关键词：机器人视觉图像识别自动驾驶汽车

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肾动脉栓塞术的临床应用

贵阳医学院学报 1987年第4期 337-340页

作者：吴家昌许绍雄刘子江韩希年尚国燕贵阳医学院附院放射科

应用 Seldinger 法经股动脉行选择性肾动脉栓塞术,对预防手术中大出血、完整切除病变、缩短手术时间等效果良好。

关键词：治疗性栓塞肾动脉

小麦抗感白粉病的不同品种几种脱氢酶的比较研究

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山地农业生物学报 1989年第1期15卷 93-97页

作者：靳华芬吴立沈杨贵州农学院基础生化教研室

小麦抗、感白粉病的三个品种,在不同发育时期分别测定乙醇脱氢酶、苹果酸脱氢酶、6-磷酸葡萄糖脱氢酶的酶活力及其同工酶。结果表明:不同发育时期除乙醇脱氢酶外,三种不同品种在不同发育时期均有苹果酸脱氢酶及6-磷酸萄葡糖脱氩酶存在... 详细信息

小麦抗、感白粉病的三个品种,在不同发育时期分别测定乙醇脱氢酶、苹果酸脱氢酶、6-磷酸葡萄糖脱氢酶的酶活力及其同工酶。结果表明:不同发育时期除乙醇脱氢酶外,三种不同品种在不同发育时期均有苹果酸脱氢酶及6-磷酸萄葡糖脱氩酶存在。说明三羧酸循环、磷酸戊糖途径同时运行。但是感病品种在感病期间以磷酸戊糖途径为主,其次为三羧酸循环。

关键词：小麦白粉病酶酶试验同工酶脱氢酶