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佳能Aquilion One CT球管故障维修3例

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医疗卫生装备 2024年第8期45卷 117-120页

作者：陈望明蔺慧雨广州医科大学附属第五医院医学影像科广州510700

阐述了佳能Aquilion One CT球管的结构及工作原理,介绍了该设备在使用过程中出现的3例CT球管故障,分析了故障产生的原因,提出了故障排除方法,为医学工程人员维修类似故障提供了参考。

关键词：佳能Aquilion One CT CT球管故障维修

Characteristic analysis of clinical coronary heart disease and coronary artery disease concerning young and middle-aged male patients

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World Journal of Clinical Cases 2021年第25期9卷 7358-7364页

作者： Kai-Ge Peng hui-lin yu Department of Cardiovascular Medicine Anqing Municipal HospitalAnqing 230032Anhui ProvinceChina

BACKGROUND Coronary heart disease(CHD)is a type of coronary atherosclerotic heart *** recent years,the incidence of CHD has been increasing annually,with an increasing number of young *** CHD may cause severe myocardial ischemia or myocardial necrosis,which in turn may cause myocardial infarction and related complications that seriously affect the life and health of the *** To examine the coronary arteries and clinical features of young and middle-aged male patients with *** From February 2019 to January 2020,110 male CHD patients admitted to our hospital were selected as research subjects and were divided into two groups by age:middle-aged group(n=55)and young group(n=55).The coronary arteries and clinical features of the patients were *** There were no significant differences in dyslipidemia,stroke history,high-density lipoprotein cholesterol,or triacylglycerol(P>0.05)between the two *** the young group,age,diabetes,hypertension,smoking history,body mass index,family history of CHD,drinking history,fibrinogen,low-density lipoprotein cholesterol,total cholesterol,and single-vessel disease were higher than those in the middle-aged ***,serum uric acid,hyperuricemia,myocardial infarction,Gensini score>50,collateral circulation,multivessel disease,double vessel disease,involvement of the right coronary artery,and involvement of the left main coronary artery were lower in the young group than in the middle-aged *** middle-aged group mainly suffered from a high Gensini score,implicating multiple arteries,whereas the young group was mainly affected by single-vessel *** between-group difference was significant(P<0.05).CONCLUSION In CHD attacks,multiple coronary arteries are implicated in middle-aged male patients and single-vessel disease in young male patients.

关键词： Coronary heart disease Coronary artery disease Coronary artery features Myocardial ischemia Risk factors

APT-联合DCE-MRI术前预测成人型弥漫性胶质瘤病理分级及IDH基因突变型

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放射学实践 2024年第8期39卷 1021-1025页

作者：陈世煌黄日升林慧宇丁增兴卢丽梅福建医科大学附属泉州市第一医院影像科福建泉州362000 福建医科大学附属泉州市第一医院放疗科福建泉州362000 泉州市儿童医院影像科福建泉州362000

目的:探讨氨基质子转移(APT)成像联合DCE-MRI对成人型弥漫性胶质瘤病理分级和IDH基因型的术前预测价值。方法:将2020年10月-2023年10月在本院诊治且经病理证实的78例脑胶质瘤患者纳入本研究。患者手术前均进行APT成像和DCE-MRI检查。依... 详细信息

目的:探讨氨基质子转移(APT)成像联合DCE-MRI对成人型弥漫性胶质瘤病理分级和IDH基因型的术前预测价值。方法:将2020年10月-2023年10月在本院诊治且经病理证实的78例脑胶质瘤患者纳入本研究。患者手术前均进行APT成像和DCE-MRI检查。依据肿瘤的组织病理学分级将患者分为2组:低级别组(Ⅱ~Ⅲ级)36例,高级别组(Ⅳ级)42例;依据患者IDH基因表达情况将患者分为2组:IDH野生型组31例,IDH突变型组47例。比较高、低病理分级组及不同IDH分型组之间病灶的APT图像信号等级(分为1~5级)和DCE-MRI参数(K_(trans)、V_(e)、rCBV、V_(p)、K_(ep)和rCBF)值的差异,对组间差异有统计学意义的指标,采用ROC曲线分析其诊断效能。结果:IDH突变型和野生型组之间年龄、性别、主诉、神经系统体征差异均无统计学意义(P>0.05);高级别组和低级别组之间年龄、性别、主诉、神经系统体征差异均无统计学意义(P>0.05),但是高级别组中IDH野生型占比更高(P<0.05)。78例病灶的APT信号分级:1级有19例,2级3例,3级14例,4级6例,5级36例。高级别组APT图像上肿瘤的信号等级高于低级别组,IDH野生型组患者APT图像等级高于突变型组,差异有统计学意义(P<0.05)。DCE-MRI参数的组间比较结果显示,高级别组与低级别组之间,以及IDH突变型与IDH野生型之间,K_(trans)、V_(e)和rCBV值的差异均有统计学意义(P<0.05)。APT信号等级鉴别高、低级别胶质瘤及IDH状态的AUC分别为0.782和0.714,K_(trans)、V_(e)和rCBV鉴别高、低级别胶质瘤的AUC分别为0.982、0.793和0.898,鉴别IDH状态的AUC分别为0.963、0.803和0.873。结论:APT成像联合DCE-MRI定量参数能在术前较准确地预测成人型弥漫性胶质瘤的病理分级和IDH基因分型。

关键词：氨基质子转移成像动态对比增强磁共振成像脑肿瘤弥漫性胶质瘤肿瘤分级 IDH基因型

Risk Assessment and Ecological Effects of Transgenic Bacillus thuringiensis Crops on Non-Target Organisms

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Journal of Integrative Plant Biology 2011年第7期53卷 520-538页

作者： hui-lin yu yun-He Li Kong-Ming Wu State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of AgriculturalSciences Beijing 100193 China

The application of recombinant DNA technology has resulted in many insect-resistant varieties by genetic engineering （GE）. Crops expressing Cry toxins derived from Bacillus thuringiensis （Bt） have been planted worldwide, and are an effective tool for pest control. However, one ecological concern regarding the potential effects of insect-resistant GE plants on non-target organisms （NTOs） has been continually debated. In the present study, we briefly summarize the data regarding the development and commercial use of transgenic Bt varieties, elaborate on the procedure and methods for assessing the non-target effects of insect-resistant GE plants, and synthetically analyze the related research results, mostly those published between 2005 and 2010. A mass of laboratory and field studies have shown that the currently available Bt crops have no direct detrimental effects on NTOs due to their narrow spectrum of activity, and Bt crops are increasing the abundance of some beneficial insects and improving the natural control of specific pests. The use of Bt crops, such as Bt maize and Bt cotton, results in significant reductions of insecticide application and clear benefits on the environment and farmer health. Consequently, Bt crops can be a useful component of integrated pest management systems to protect the crop from targeted pests.

关键词： Bt crops non-target organisms risk assessment IPM.

Fabrication and Properties of DC Magnetron Sputtered Indium Tin Oxide on Flexible Plastic Substrate

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Journal of Materials Science & Technology 2009年第1期25卷 119-122页

作者： hui lin Junsheng yu Nana Wang Shuangling Lou Yadong Jiang State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Information University of Electronic Science and Technology of China （UESTC） Chengdu 610054 China

Indium tin oxide （ITO） thin films deposited on flexible polyethylene terephthalate （PET） substrates at low temperature by DC magnetron sputtering from an In-Sn （90-10 wt pct） alloy target were studied. The correla- tion between deposition conditions and ITO property was systematically investigated and characterized. These as-deposited ITO films were used as the anode contact for flexible organic light-emitting diodes （FOLEDs）. The fabricated FOLEDs with a structure of PET/ITO/NPB （50 nm）/Alq （20 nm）/Mg：Ag （100 nm） showed a maximum luminance of 2125 cd/m^2 at 13 V.

关键词： Flexible Organic light-emitting diodes Indium tin oxide DC sputtering

Low Temperature DC Sputtering Deposition on Indium-Tin Oxide Film and Its Application to Inverted Top-emitting Organic Light-emitting Diodes

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Journal of Materials Science & Technology 2008年第2期24卷 179-182页

作者： hui lin Junsheng yu Shuangling LOU Jun WANG Yadong JIANG State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Information University of Electronic Science and Technology of China （UESTC） Chengdu 610054 China

Indium tin oxide （ITO） ultrathin films were prepared on glass substrate by DC （direct current） magnetron sputtering technique with the assistance of H2O vapor to avoid potential surface damage. The film properties were characterized by X-ray diffraction （XRD） technique, four-point probe method and spectrophotometer. The results show that the deposited ITO film with introduced H2O during sputtering process was almost amorphous. The average visible light transmission of 100 nm ITO film was around 85% and square resistivity was below 80 Ω/square. The film was used as the transparent anode to fabricate an inverted top-emitting organic light-emitting diodes （IT-OLEDs） with the structure of glass substrate/Alq3 （40 nm）/NPB （15 nm）/CuPc （x nm）/ITO anode （100 nm）, where the film thickness of CuPc was optimized. It was found that the luminance of this IT-OLEDs was improved from 25 cd/m^2 to more than 527 cd/m^2 by increasing the thickness of CuPc, and luminance efficiency of 0.24 lm/W at 100 cd/m^2 was obtained, which indicated that the optimized thickness of CuPc layer was around 15 nm.

关键词： Inverted top-emitting organic light-emitting diodes Indium-tin-oxide Ultrathin film DC sputtering

Simulation of bubble breaking process in a jet mixing reactor for desulfurization of molten iron

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Journal of Iron and Steel Research International 2023年第6期30卷 1117-1127页

作者： Chao Lv Xu-xin Chen Zhao-xiang Ji Hong-liang Zhao Tao Yang lin-hui yu School of Control Engineering Northeastern University at QinhuangdaoQinhuangdao 066000HebeiChina State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650000YunnanChina School of Metallurgy and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Yingkou Dongbang Environmental Protection Technology Co. Ltd.Yingkou 115000LiaoningChina

The gas–liquid flow behavior of the stirred flow field,the different positions of a single bubble,the initial velocity,the surface tension and the agglomeration of multiple bubbles were studied by CFD numerical *** results show that the pressure distribution and velocity distribution inside the fluid during agitation indicate that the velocity difference between the liquid and the gas phase and the collision between the bubbles caused by the turbulent behavior of the liquid are the important conditions leading to the bubble *** initial bubble positions and initial bubble velocities have important effects on single bubble *** surface tension is an important condition that affects the bubble *** the surface tension coefficient is 0.7,the bubble will be stretched to the smallest degree;when the surface tension coefficient is 0.1,the bubble will be stretched to the largest degree and it will be easily broken into smaller *** multi-bubble results show the states and trajectories of coalescence between *** research results can provide data support for the engineering application of desulfurization process and theoretical guidance for the research of bubble breaking mechanism.

关键词： Desulfurization Molten iron Single bubble Bubble breakage Numerical simulation Convergence

Film thickness effect on the performance of small molecular solar cell

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Optoelectronics Letters 2008年第5期4卷 321-323页

作者： lin hui yu Jun-sheng HUANG Jiang JIANG Ya-dong State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Information University of Electronic Science and Technology of China （UESTC） Chengdu 610054 China

An efficient organic photovoltaic （OPV） cell with an indium-tin-oxide/CuPc/C60/Ag structure has been investigated by changing the film thickness of organic layers. A high olin-circuit voltage （Yoc） of 0.5 V, a short-circuit current density （Jsc） of 5.81 mA/cm^2, and a high power conversion efficiency （ηp） of 1.2% were achieved at an optimum film thickness. The results demonstrate that material thickness is an important factor to cell optimization, especially for maximizing the absorption rate as will as reducing the cell resistance. Experimental results also indicate that the power conversion efficiency increases from 1.2% to 1.54% as a BCP exciton blocking layer of 10 nm is introduced.

关键词：油膜厚度分子太阳能电池有机层 OPV电池

Simulation study on fluid flow performance of injection stirring composite process in molten iron desulfurization process

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Journal of Iron and Steel Research International 2023年第12期30卷 2403-2415页

作者： Chao Lv Xu-xin Chen Hai-wei Zhang Hong-liang Zhao lin-hui yu Wen-ming Guo School of Control Engineering Northeastern University at QinhuangdaoQinhuangdao066000HebeiChina Yingkou Dongbang Environmental Protection Technology Co. Ltd.Yingkou115000LiaoningChina School of Metallurgy and Ecological Engineering University of Science and Technology BeijingBeijing100083China XCMG Earthmoving Machinery Division Xuzhou221004JiangsuChina

The blowing and stirring composite process of molten iron desulfurization process affects the desulfurization efficiency and has obvious advantages in improving steel properties and expanding the scale of converter *** present,the injection position of the injection stirring research is fixed,and the desulfurization efficiency needs to be *** gas–liquid flow behavior of single-scale bubble model and the size and distribution of bubbles in multi-scale bubble model were studied by computational fluid dynamics numerical simulation method for the injection mixing composite process of jet inlet and stirring paddle rotating at the same *** pressure distribution and velocity distribution inside the fluid indicate that the velocity difference between the gas–liquid phases and the turbulence of the liquid are due to the collisions of bubbles,which are due to essential conditions for bubble *** injection air volumes have essential influence on the formation of single *** the injection volume reaches 2.8 m3/h,the turbulent kinetic energy is maximum,the bubble formation is rapid,and the desulfurization efficiency can be *** multi-bubble results show that the bubble diameter is mainly distributed in the range of 2–5 *** higher gas flow rate will increase the number of bubbles in the fluid and promote the bubble refinement process.

关键词： Molten iron desulfurization Spraying-Stirring-Bubble Numerical simulation