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Advances in Journal of Geriatric Cardiology over the course of a decade

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Journal of Geriatric Cardiology 2020年第12期17卷 733-739页

作者： Qiang WU Lai-Fu LI Yun-dai CHEN Institute of Geriatric Cardiology Chinese PLA General HospitalBeijingChina Department of Cardiology Chinese PLA General HospitalBeijingChina Journal of Geriatric Cardiology Editorial Office Chinese PLA General HospitalBeijingChina

The Journal of Geriatric Cardiology(JGC,ISSN 1671-5141/CN 11-5329/R)is a monthly,open-access,international,and peer-reviewed journal sponsored and published by the Institute of Geriatric Cardiology affiliated with Chinese PLA General *** was created in 2004 by ***-Wen WANG,and as the current editor-in-chief,***-dai CHEN has been involved in JGC for eight years and has achieved impressive advancements.

关键词： Bibliometrics Citation analysis Journal of Geriatric Cardiology Peer review Research hotspots

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废玻璃制备蓝色玻璃陶瓷及其力学性能研究

功能材料与器件学报 2024年第1期 21-26页

作者：戴予诺司伟吴骏涵大连交通大学材料科学与工程学院大连116028 大连交通大学机车车辆工程学院大连116028

使用废弃窗玻璃粉作为原料,分别加入顽辉石、钙铝黄长石及氟云母三种析晶促进剂,添加蓝色颜料后采用反应析晶烧结法分别制备蓝色透辉石玻璃陶瓷、蓝色硅灰石玻璃陶瓷与蓝色氟闪石玻璃陶瓷。研究蓝色颜料添加量对玻璃陶瓷的物相、形貌和... 详细信息

使用废弃窗玻璃粉作为原料,分别加入顽辉石、钙铝黄长石及氟云母三种析晶促进剂,添加蓝色颜料后采用反应析晶烧结法分别制备蓝色透辉石玻璃陶瓷、蓝色硅灰石玻璃陶瓷与蓝色氟闪石玻璃陶瓷。研究蓝色颜料添加量对玻璃陶瓷的物相、形貌和力学性能的影响。结果表明:制得的蓝色透辉石玻璃陶瓷的主晶相为透辉石,次晶相为霞石;蓝色硅灰石玻璃陶瓷的主晶相为硅灰石;蓝色氟闪石玻璃陶瓷的主晶相为氟闪石,次晶相为透辉石。添加适量蓝色颜料时,析出晶体与玻璃基质结合较为紧密,过量添加会降低其性能。当添加1.5 g蓝色颜料时,蓝色硅灰石玻璃陶瓷着色性最好,力学性能最佳,其断裂模数为24.48 MPa。

关键词：反应析晶烧结法蓝色透辉石硅灰石氟闪石

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绝经前后血尿酸水平变化的队列研究

中华疾病控制杂志 2024年第1期28卷 8-13,107页

作者：代巧云吴寿岭杨雪莹陈朔华曹宗富张亚亚马旭国家卫生健康委科学技术研究所人类遗传资源中心北京100081 华北理工大学附属开滦总医院心血管内科唐山063011 华北理工大学研究生院唐山063210

目的探讨绝经前后血尿酸(serum uric acid,SUA)水平变化。方法基于开滦体检队列,用线性和分段线性混合效应模型分析绝经前后SUA变化,并分析基线年龄和基线BMI分别与绝经前后时间分段的相乘交互作用。结果2006―2020年的7次体检共3747例... 详细信息

目的探讨绝经前后血尿酸(serum uric acid,SUA)水平变化。方法基于开滦体检队列,用线性和分段线性混合效应模型分析绝经前后SUA变化,并分析基线年龄和基线BMI分别与绝经前后时间分段的相乘交互作用。结果2006―2020年的7次体检共3747例女性,共21223人次体检记录被纳入分析。首次体检平均年龄为(46.19±4.11)岁,中位绝经年龄为51.00(50.00,53.00)岁。与绝经前相比,绝经后SUA水平升高10.15μmol/L。SUA从绝经前11年开始缓慢增加,平均年增长量为1.99μmol/L;绝经前5~前2年每年平均增加3.30μmol/L;SUA在绝经前后2年的平均年增长量为4.60μmol/L;随后平均年增长量下降,在绝经5年后,平均年增长量降至1.77μmol/L。基线年龄0.05)。结论绝经对SUA有不良影响,中年女性在绝经前后应关注SUA水平,采取积极防控策略。

关键词：绝经血尿酸队列研究体质指数

二甲双胍对妊娠期糖尿病患者外周血内皮祖细胞及氧化应激水平的影响

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西北药学杂志 2024年第5期39卷 185-189页

作者：代娟霞芦延峰冯昊河南科技大学第一附属医院产科洛阳471000 郑州大学第三附属医院产科郑州450052

目的探究二甲双胍对妊娠期糖尿病(gestational diabetes mellitus,GDM)患者外周血内皮祖细胞(endothelial progenitor cells,EPCs)及氧化应激水平的影响。方法选取收治的98例GDM患者,随机分为对照组(n=49)和观察组(n=49),对照组给予... 详细信息

目的探究二甲双胍对妊娠期糖尿病(gestational diabetes mellitus,GDM)患者外周血内皮祖细胞(endothelial progenitor cells,EPCs)及氧化应激水平的影响。方法选取收治的98例GDM患者,随机分为对照组(n=49)和观察组(n=49),对照组给予常规干预和门冬胰岛素治疗,观察组在对照组治疗的基础上给予二甲双胍辅助治疗。比较2组的血糖水平[空腹血糖(fasting blood-glucose,FBG)、餐后2小时血糖(2-hour postprandial blood glucose,2 hPG)和糖化血红蛋白(glycosylated hemoglobin,HbA1c)]、胰岛素抵抗和胰岛素水平[胰岛素抵抗指数(homeostasis model assessment of insulin resistance,HO-MA-IR)、空腹胰岛素(fasting insulin,FINS)和饭后1 h胰岛素(insulin 1 h after meal,1 h INS)]、外周血EPCs百分比和数量以及氧化应激水平[谷胱甘肽(glutathione,GSH)、超氧化物歧化酶(superoxide dismutase,SOD)和丙二醛(malonaldehyde,MDA)]。结果治疗后,与对照组比较,观察组的FBG、2 hPG、HbA1c、FINS、1 hINS、HO-MA-IR和MDA均明显较低(P<0.05),外周血EPCs数量和百分比、GSH和SOD均明显较高(P<0.05)。结论针对GDM患者,在常规干预和门冬胰岛素治疗的基础上给予二甲双胍辅助治疗可更好地控制血糖水平,改善胰岛素抵抗和胰岛素水平,提高外周血EPCs的增殖能力,下调机体氧化应激水平。

关键词：二甲双胍妊娠期糖尿病外周血内皮祖细胞氧化应激

Two-dimensional analytical model of double-gate tunnel FETs with interface trapped charges including effects of channel mobile charge carriers

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Journal of Semiconductors 2017年第2期38卷 51-58页

作者： Huifang Xu Yuehua dai Institute of Electrical and Electronic Engineering Anhui Science and Technology University Institute of Electronic and Information Engineering Anhui University

A two-dimensional analytical model of double-gate（DG） tunneling field-effect transistors（TFETs） with interface trapped charges is proposed in this paper. The influence of the channel mobile charges on the potential profile is also taken into account in order to improve the accuracy of the models. On the basis of potential profile,the electric field is derived and the expression for the drain current is obtained by integrating the BTBT generation rate. The model can be used to study the impact of interface trapped charges on the surface potential, the shortest tunneling length, the drain current and the threshold voltage for varying interface trapped charge densities, length of damaged region as well as the structural parameters of the DG TFET and can also be utilized to design the charge trapped memory devices based on TFET. The biggest advantage of this model is that it is more accurate,and in its expression there are no fitting parameters with small calculating amount. Very good agreements for both the potential, drain current and threshold voltage are observed between the model calculations and the simulated results.

关键词： double-gate tunnel field effect transistor(TFET) interface trapped charges analytical model

A novel ADRC-based design for a kind of flexible aerocraft

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Control Theory and Technology 2021年第1期19卷 35-48页

作者： Sheng Zhong Yi Huang Sen Chen Lin dai Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Mathematics and Information Science Shaanxi Normal UniversityXi'anShaanxi 710119China Beijing System Design Institute of Electro-Mechanic Engineering Bejing 100854China

The paper presents a novel control design,which is based on the idea of active disturbance rejection control(ADRC),for a kind of flexible aerocraft whose contolled variable cannot be measured *** the original frame of ADRC can-not be directly applied,the paper puts forward a new extended state observer(ESO)and the corresponding ADRC *** order to assign the poles of the closed loop system to ideal positions such that the vibration can be quickly suppressed,an elastic damping term is added into feedback *** advantages of the new ESO for fectively estimating both the rigid mode and elastic mode from the measurements are ***,the analysis on the *** relative stability and the steady state of the closed-loop system is ***,the efectiveness and robustness of the proposed ADRC are verified by simulations.

关键词： Attitude control for flexible aerocraft Active disturbance rejection control(ADRC) Extended state observer(ESO)

Rate-Dependent Weakening of the Shear Force for the Submerged Granular Medium Based on the Experimental Study

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Journal of Earth Science 2023年第2期34卷 347-353页

作者： Hu Zheng Guowei dai Wuwei Mao Yu Huang Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education Tongji UniversityShanghai 200092China

An experimental study is conducted to describe rate-dependent shear strength in a submerged granular medium to understand the mystery of submarine landslides with extremely small slide angles and long run-out *** experimental apparatus allows a long-span shear strain rate,■,for five orders of magnitude from 10^(-4)to 10^(1)s^(-1).It is observed that(a)submerged sand under higher shear tend to have bigger yield strength;this positive response of rate effect is significantly affected by the magnitudes of shear strain rates.(b)the residual strength of soil is clearly affected negatively by shear strain rate,decreasing as shear strain rate increases;even small variations under lower rate cause notable differences in residual strength,indicating a novel weaking *** yield strength and residual strength are corresponding to the shear state of ***,it is enough experimentally to explain that as long as the submarine mass flow speeds up,the slope sliding can be kept by only a small amount of force along the slide direction,which can be calculated as the gravity component even with a small slide angle.

关键词： rate dependent granular medium submarine landslides yield strength residual strength engineering geology

光电关联显微镜技术快速定位样品台的设计及应用

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分析测试技术与仪器 2024年第1期30卷 16-22页

作者：戴玉洁常林赵复庆中国科学院重庆绿色智能技术研究院综合分析测试中心重庆400714

光电关联显微镜技术结合了光学显微镜与电子显微分析技术,可获得样品同一位置的光学图像和高分辨电子图像,以实现更全面准确的样品表征,因而被广泛应用于材料科学、光学工程等学科.相较于传统非联用技术,光电关联显微镜技术可快速获取... 详细信息

光电关联显微镜技术结合了光学显微镜与电子显微分析技术,可获得样品同一位置的光学图像和高分辨电子图像,以实现更全面准确的样品表征,因而被广泛应用于材料科学、光学工程等学科.相较于传统非联用技术,光电关联显微镜技术可快速获取同一区域样品对应的光学图像、电子图像以及光谱信息等样品特征.为此,通过微纳加工技术制备了带有快速定位功能的光电关联显微镜样品台,结合能谱定位系统实现特定区域样品快速定位、跨尺度多维度表征,对相关科研工作具有重要意义.

关键词：光电关联显微镜技术样品台拉曼光谱原子力显微镜

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环境温度对水轮机大部件热变形的影响分析

现代制造技术与装备 2024年第8期60卷 13-15页

作者：代继江李浩亮东方电气集团东方电机有限公司德阳618000

水轮机大部件的虚拟装配技术在提高产品质量、缩短产品交付周期和降本增效等方面具有重要作用。因此,研究工装夹具、重力、操作力和温度等因素对实际装配精度的影响,通过对环境温度对水轮机大部件热变形的影响分析,明确部件随环境温度... 详细信息

水轮机大部件的虚拟装配技术在提高产品质量、缩短产品交付周期和降本增效等方面具有重要作用。因此,研究工装夹具、重力、操作力和温度等因素对实际装配精度的影响,通过对环境温度对水轮机大部件热变形的影响分析,明确部件随环境温度的变化规律,以及温度对部件热变形的影响,初步探索出一种分析部件热变形和进行热变形补偿的方法。

关键词：虚拟装配数字孪生温度热变形变形补偿