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心电编辑功能在快心率患者双源CT冠状动脉造影检查中的应用

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医学影像学杂志 2011年第12期21卷 1815-1818页

作者：谢丽响袁莹莹李绍东徐凯程广军徐州医学院附属医院影像科江苏徐州221000

目的:探讨心电编辑技术在快心率患者双源CT冠状动脉成像中的应用。方法:收集2010年9月～2010年12月在我院进行DSCT冠状动脉检查的心率≥80次/min患者76例(其中男34例,女42例),按心率快慢分5组,用绝对值进行心电编辑;节段性评价心电编辑... 详细信息

目的:探讨心电编辑技术在快心率患者双源CT冠状动脉成像中的应用。方法:收集2010年9月～2010年12月在我院进行DSCT冠状动脉检查的心率≥80次/min患者76例(其中男34例,女42例),按心率快慢分5组,用绝对值进行心电编辑;节段性评价心电编辑前后图像质量,并进行统计学分析。结果:76例患者中,心电编辑的绝对值均在收缩期,其中以280ms及230ms(或240ms)应用较多;心电编辑前后各段图像质量比较均有统计学意义。结论:在快心率患者中,利用绝对值进行心电编辑可以减轻或消除冠状动脉CTA伪影,显著提高图像质量。

关键词：体层摄影术 X线计算机冠状动脉疾病心率

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双源CT诊断冠状动脉起源异常的价值

检验医学与临床 2011年第12期8卷 1414-1415页

作者：谢丽响李绍东徐凯程广军袁莹莹徐州医学院附属医院影像科江苏徐州221000

目的探讨双源CT（DSCT）在诊断成人冠状动脉起源异常（CAOA）的价值。方法回顾性分析2009年1~12月在本院接受DSCT冠状动脉造影检查的3 269例患者资料,对患者图像行最大密度投影（MIP）、容积再现（VR）、多平面重建（MPR）和曲面重建（... 详细信息

目的探讨双源CT（DSCT）在诊断成人冠状动脉起源异常（CAOA）的价值。方法回顾性分析2009年1~12月在本院接受DSCT冠状动脉造影检查的3 269例患者资料,对患者图像行最大密度投影（MIP）、容积再现（VR）、多平面重建（MPR）和曲面重建（CPR）后处理,观察冠状动脉起源及走行。结果 3 269例患者中,共检出冠状动脉起源异常37例,检出率为1.13%,其中右冠状动脉起源异常24例（64.86%）,左冠状动脉起源异常13例（35.14%）。所有图像通过不同后处理方法均能显示异常血管的起源及走行。结论 DSCT冠状动脉CT血管造影检查能准确直观地显示冠状动脉的起源及走行,可作为冠状动脉变异的筛查方法。

关键词：冠状血管畸形 X线计算机,体层摄影

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结肠镜联合腹腔镜治疗结直肠息肉疗效观察

海南医学 2017年第1期28卷 60-62页

作者：林建园群英英钟远慎董功航高朝腾余宗洋广州医科大学附属深圳沙井医院消化内科广东深圳518104 深圳市光明新区中心医院内分泌科广东深圳518107

目的探讨结肠镜联合腹腔镜治疗结直肠息肉的安全性和临床疗效,为临床医生有效治疗结直肠息肉提供理论依据。方法选取2012年1月至2014年2月期间于广州医科大学附属深圳沙井医院就诊且活检病理结果为良性,行结肠镜无法独立切除的结直肠息... 详细信息

目的探讨结肠镜联合腹腔镜治疗结直肠息肉的安全性和临床疗效,为临床医生有效治疗结直肠息肉提供理论依据。方法选取2012年1月至2014年2月期间于广州医科大学附属深圳沙井医院就诊且活检病理结果为良性,行结肠镜无法独立切除的结直肠息肉患者80例,按随机数表法将患者分为观察组和对照组,每组40例,观察组患者行结肠镜联合腹腔镜切除术,对照组行开腹切除术。比较两组患者的手术时间、住院时间、术中出血、肠功能恢复时间等指标。同时探究息肉直径、数量与癌变的关系。结果观察组患者的手术时间、术中出血量和肠蠕动恢复时间分别为(84.7±17.2)min、(33.7±9.8)m L和(6.7±2.4)d,明显少于对照组的(107.2±22.7)min、(117.5±21.6)m L和(8.5±4.9)d,差异均具有统计学意义(P<0.05);术中出血量方面,观察组出血量明显低于对照组,差异有统计学意义(P<0.05)。经术后病理切片验证,息肉直径≥2 cm者癌变率高达47.6%,息肉直径<2 cm者癌变率仅为6.8%,两者比较差异有统计学意义(P<0.05);单发息肉癌变率为5.2%,多发息肉癌变率则高达38.1%,两者比较差异有统计学意义(P<0.05);两组患者均未出现严重并发症。结论结肠镜联合腹腔镜治疗结直肠息肉可显著缩短患者手术时间、住院时间及肠功能恢复时间。

关键词：结肠镜腹腔镜结直肠息肉联合治疗疗效

Single-Crystalline Organoiridium Complex for Gas-Triggered Chromogenic Switches and Its Applications on CO Detection and Reversible Scavenging

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Chinese Journal of Chemistry 2019年第8期37卷 763-768页

作者： Li-ying Sun yuan-yuan An Li-Li Ma ying-Feng Han Key Laboratory of Synthetic and Natural Functional Molecule Chemistry College of Chemistry and Materials ScienceNorthwest UniversityXi'anShaaxi 710127China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002China

Summary of main observation and conclusion Nonporous molecular single crystals of coordinatively unsaturated 16-electron metallacycle are found to undergo highly selective-yet reversible-binding of CO over CH4,H2,N2,CO2,various volatile organic compounds and water,through binding of the molecule to its metal *** monoxide is taken up by black crystals and subsequently liberated from the corresponding orange CO adduct by reversible metal coordination,the structural evidence obtained from in situ X-ray *** single-crystallinity of the metallacycle is retained even after several *** material,when adsorbed on silica,shows remarkable sensitivity and selectivity for CO,allowing visual CO sensing in the solid *** metallacycle offer the possibility of serving as readily regenerable scavenger for removing trace CO from gas mixtures with N2.

关键词： Gas-Triggered Chromogenic Switches Applications CO Detection Reversible Scavenging

Resistance of Cement-based Grouting Materials with Nano- SiO_(2) Emulsion to Chloride Ion Penetration

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 114-119页

作者： LI Shuiping CHENG Jian WEI Chao yuan Bin YU Chengxiao College of Architectural Science and Engineering Yangzhou UniversityYangzhou 225127China

The chloride penetration resistance of cement-based grout materials was improved by nano-silica *** of mixtures containing different nano-silica particles or emulsions were exposed in sodium chloride solutions of specific concentrations with different test *** properties of the mixes were assessed in terms of weight loss and compressive strength.X-ray diffraction(XRD)and scanning electron microscopy(SEM)of mixes were performed to analysis the phase evolution and *** results demonstrated that the introduction of nano-SiO_(2) emulsion significantly decreased the compressive strength loss and calcium hydroxide(CH)crystal content of hydration production,and then enhanced the resistance of cement-based grouting materials to chloride ion *** improvement derives from the filling and pozzolanic effects of nano-SiO_(2) particles,which were incorporated via an emulsion and attributed to a well dispersion in grouting matrix.

关键词： grouting materials nano-SiO_(2)emulsion chloride ion penetration,weight loss strength loss

Preparation of solid acid catalyst SO4^2-/TiO2/γ-Al2O3 for esterification: A study on catalytic reaction mechanism and kinetics

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Chinese Journal of Chemical Engineering 2019年第11期27卷 2696-2704页

作者： ying yuan Wenwei Jiang Jinjin Li School of Chemical Engineering Sichuan UniversityChengdu 610065China

In this work, a series of SO4^2-/TiO2/γ-Al2O3 solid acid catalysts were synthesized by impregnation method, in which nano-TiO2 was prepared by sol–gel method, and then the nano-TiO2 sol was loaded on porous γ-Al2O3 supporter through impregnation. The structure and property of catalyst were characterized by XRD, N2-BET,SEM, TEM, XPS, NH3-TPD, Pyridine-IR and FT-IR. In addition, the catalyst of chelate bidentate coordination acid center model was established. The catalytic performance test was carried out in the esterification of n-butyl alcohol with lauric acid and the catalyst showed excellent activity. The experimental results showed that the medium strength acid sites were more dominant active sites than the strong and weak acid sites for the rapid esterification reaction. Its kinetic behaviors and activation energy were studied for the esterification under the catalytic reaction condition.

关键词： Solid acid catalyst Nano-TiO2 Esterification Kinetics

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体外受精助孕患者染色体核型特点分析

宁夏医科大学学报 2012年第8期34卷 779-782页

作者：袁莹莹赵君利刘丽成洁景万红宁夏医科大学银川750004 宁夏医科大学总医院生殖医学中心银川750004 宁夏医科大学宁夏生殖与遗传重点实验室宁夏医科大学生育力保持省部共建教育部重点实验室银川750004

目的分析体外受精助孕患者染色体多态及异常检出率及主要异常核型者的临床特征。方法回顾性分析657对体外受精-胚胎移植/卵泡浆内单精子显微注射-胚胎移植(In vitro fertilization-embryo trans-fer/Intracytoplasmic sperm injection-e... 详细信息

目的分析体外受精助孕患者染色体多态及异常检出率及主要异常核型者的临床特征。方法回顾性分析657对体外受精-胚胎移植/卵泡浆内单精子显微注射-胚胎移植(In vitro fertilization-embryo trans-fer/Intracytoplasmic sperm injection-embryo transfer,IVF-ET/ICSI-ET)治疗对象的核型,分析其多态及异常核型检出率,探讨主要异常核型与生殖异常的关系及Y染色体异常与精液质量的关系。结果 IVF/ICSI助孕患者中染色体核型多态及异常者的总检出率为8.07%。其中以Y染色体异常最常见,占8.52%,其次为1、9、16号染色体变异,占1.67%。不同多态及异常核型患者的临床特征不同。Y染色体多态及异常可影响精液质量。结论 IVF/ICSI助孕者中染色体核型多态及异常者的总检出率高于我国普通人群。染色体异常是不孕不育的重要因素之一,临床应予以重视。

关键词：染色体不孕体外受精-胚胎移植卵泡浆内单精子显微注射-胚胎移植

On the horizontal distribution of algal-bloom in Chaohu Lake and its formation process

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Acta Mechanica Sinica 2014年第5期30卷 656-666页

作者： yuan-ying Chen Qing-Quan Liu Laboratory for Mechanics in Fluid Solid Coupling System Institute of Mechanics Chinese Academy of Sciences

Based on the remote sensing images of algae, the present work analyzes the horizontal distribution characteristics of algal blooms in Chaohu Lake, China, which also reveals the frequency of algal blooms under different wind directions. Further, an unstructured-grid, three-dimensional finite-volume coastal ocean model （FVCOM） is applied to investigate the wind-induced currents and the transport pro- cess to explain the reason why algal blooms occur at the detected places. We first deduce the primary distribution of biomass from overlaid satellite images, and explain the formation mechanism by analyzing the pollution sources, and simulating the flow field and transportation process under prevailing wind over Chaohu Lake. And then, we consider the adjustment action of the wind on the corresponding day and develop a two-time scale approach to describe the whole formation process of algae horizontal distribution in Chaohu Lake. That is, on the longer time scale, i.e., during bloom season, prevailing wind determines the primary distribution of biomass by inducing the characteristic flow field; on the shorter time scale, i.e., on the day when bloom occurs, the wind force adjusts the primary distribution of biomass to form the final distribution of algal bloom.

关键词： Chaohu Lake Algal bloom Horizontal distri- bution - Wind-driven current Two-time scale process

Process optimization with consideration of uncertainties——An overview

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Chinese Journal of Chemical Engineering 2018年第8期26卷 1700-1706页

作者： ying Chen Zhihong yuan Bingzhen Chen Department of Chemical Engineering Tsinghua University

Optimization under uncertainty is a challenging topic of practical importance in the Process Systems *** the solution of an optimization problem generally exhibits high sensitivity to the parameter variations, the deterministic model which neglects the parametric uncertainties is not suitable for practical applications. This paper provides an overview of the key contributions and recent advances in the field of process optimization under uncertainty over the past ten years and discusses their advantages and limitations thoroughly. The discussion is focused on three specific research areas, namely robust optimization, stochastic programming and chance constrained programming, based on which a systematic analysis of their applications, developments and future directions are presented. It shows that the more recent trend has been to integrate different optimization methods to leverage their respective superiority and compensate for their drawbacks. Moreover, data-driven optimization, which combines mathematical programming methods and machine learning algorithms, has become an emerging and competitive tool to handle optimization problems in the presence of uncertainty based on massive historical data.

关键词： Optimization under uncertainty Robust optimization Stochastic programming Chance constrained programming Data-driven optimization