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Qi Fang:Affective interweave with patients

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Protein & Cell 2022年第11期13卷 785-789页

作者： Tanping Fu Wenli Duan mingyan chen Shuyang Zhang Peking Union Medical College Hospital Beijing 100730China

It is terribly wrong to make patients serve doctors,which means they are treated as sources of medical *** should treat patients *** educated and inarticulate patients need more help,care and ***'interest is always the priority,including,not to abuse doctors'power for personal gains,or to gain anything directly or indirectly from *** win a patient's trust,we have to understand him or her,his or her understanding about the illness."Professor Qi Fang(方圻)always repeated those views,which have profound implications(Fang,2002).

关键词： patients doctor profound

微型钢板内固定治疗掌指骨骨折的恢复效果与并发症情况评估

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中外医疗 2024年第4期43卷 50-53页

作者：郑明东陈明彦高溪源福建省东山县医院福建漳州363400

目的研究掌指骨骨折患者应用微型钢板内固定治疗的恢复效果及并发症发生情况。方法便利选取2021年1月-2023年1月福建省东山县医院收治的56例掌指骨骨折患者为研究对象,按照随机数表法分为对照组和观察组,各28例。对照组应用克氏针内固... 详细信息

目的研究掌指骨骨折患者应用微型钢板内固定治疗的恢复效果及并发症发生情况。方法便利选取2021年1月-2023年1月福建省东山县医院收治的56例掌指骨骨折患者为研究对象,按照随机数表法分为对照组和观察组,各28例。对照组应用克氏针内固定治疗,观察组应用微型钢板内固定治疗,比较两组治疗效果。结果观察组掌指关节功能恢复优良率为96.43%,高于对照组的71.43%,差异有统计学意义(χ^(2)=4.766,P<0.05)。观察组手术时间长于对照组,骨折愈合时间和功能锻炼开始时间短于对照组,差异有统计学意义(P均<0.05)。观察组疼痛程度评分低于对照组,手指总主动屈曲度和生活质量评分高于对照组,差异有统计学意义(P均<0.05)。观察组并发症发生率低于对照组,差异有统计学意义(P<0.05)。结论采取微型钢板内固定的方式治疗掌指骨骨折患者,可以显著提升恢复效果,该方法虽手术时间相对略长,但并发症更少,且疼痛症状较轻,有助于提升患者生活质量。

关键词：掌指骨骨折微型钢板内固定并发症功能恢复优良率

不同运动形式和运动量对心脏结构与功能的影响

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中国超声医学杂志 2024年第1期40卷 44-47页

作者：郑平李红梅孔娜王林杰陈明燕张忠梅中国人民解放军总医院京北医疗区中国航天员科研训练中心

目的应用超声心动图评价不同运动对35～55岁男性脑力工作者心脏结构与功能的影响。方法纳入2021年中国人民解放军总医院京北医疗区进行心脏体检的中年男性脑力工作者200例，根据近1年运动量和《体育活动等级量表(PARS-3)》分为波动量... 详细信息

目的应用超声心动图评价不同运动对35～55岁男性脑力工作者心脏结构与功能的影响。方法纳入2021年中国人民解放军总医院京北医疗区进行心脏体检的中年男性脑力工作者200例，根据近1年运动量和《体育活动等级量表(PARS-3)》分为波动量组45例、中等运动量组89例、大运动量组33例、高强度运动量组33例。进行超声心动图检查，测量心脏结构和功能等指标。结果各组静息心率、左心房前后径(LAAPD)/体表面积■、左心室心肌质量指数(LVMI)、舒张早期E峰减速时间(DT)/每搏心跳时间比较，差异有统计学意义(P<0.05)。相关性分析显示，■、LVMI、E峰/A峰、DT、DT/每搏心跳时间、静息心率与体育活动量呈显著相关(r=0.188,P=0.008;r=0.196,P=0.005;r=0.231,P=0.001;r=0.184,P=0.010;r=0.181,P=0.014;r=0.291,P<0.001;r=-0.238,P=0.001)。结论中等运动量组和大运动量组的心脏结构指标优于高强度运动量组，心肌重构发生率小，对左心室舒张功能影响亦较小，《体育活动等级量表(PARS-3)》评分20～59分的运动量最为适宜。

关键词：心脏超声脑力工作者运动量左心室左心房

A mussel-induced approach to secondary functional cross-linking 3-aminopropytriethoxysilane to modify the graphene oxide membrane for wastewater purification

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Chinese Chemical Letters 2023年第1期34卷 426-434页

作者： Wenwen Tu Yucheng Liu mingyan chen Lili Ma Lingli Li Bing Yang College of Chemistry and Chemical Engineering Southwest Petroleum UniversityChengdu 610500China Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization Southwest Petroleum UniversityChengdu 610500China

Graphene oxide(GO)with one-atom-thick exhibit remarkable molecule sieving properties,but its low permeance flux renders it difficult to be applied in practice as a high-permeance separation *** this study,we design complex membrane from covalently crosslinked GO,polydopamine(PDA),and 3-aminopropytriethoxysilane(APTES)as building blocks to fabricate the high-permeance GO-based membrane via the vacuum filtration method.A branched crosslinking product(PDA/APTES)working as a clamp grasped the hydrophilic functional groups(hydroxyl,epoxy,carboxyl)on GO for improving the GO membrane *** interlayer structure of the GO membrane was optimized according to the crosslinker concentration,reaction time,initial p H,and temperature for RGO/PDA/APTES(RGPA)in this *** the optimized reaction conditions including the crosslinker concentration of 1.4 m L/L,the temperature of 80°C,the time of 16 h,and the initial p H of 8.5 for RGPA mixture,the interlayer gallery of RGPA membrane was effectively tunes,endowing high flux ranging from 11.98 L m^(-2)h^(-1)to 1823.97 L m^(-2)h^(-1).Besides,the RGPA membrane ensured the high rejections to dye solutions such as methylene blue(MB)(>99%)and congo red(CR)(>90%).Meanwhile,the superior reusable performance of the RGPA membrane was achieved,together with the rejections for MB and CR to 96.32%and 93.1%after 4 cycles,***,the RGPA membrane possessed superior anti-fouling performances for bovine serum albumin(BSA)aqueous solution and excellent stabilities in harsh conditions(p H 3,7 and 11).Grafting the crosslinker onto GO nanosheets exhibits the distinct advantages of achieving the high flux,high rejections to dyes,and superior reusable performance of membranes,posing a great application potential for membrane separation technology in wastewater treatment.

关键词： Cross-linked graphene oxide Polydopamine APTES High flux membranes Dye separation

基于血流动力学效应优化的体外反搏闭环反馈调控研究

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北京生物医学工程 2024年第4期43卷 338-345页

作者：陈明岩刘有军许可李鲍北京工业大学环境与生命学部北京100124 北京大学第三医院北京100191

目的本文旨在实现针对不同的患者个体,以较优的血流动力学效应为目标,实现个性化的体外反搏(enhanced external counterpulsation,EECP)的闭环反馈调控数值模拟。方法通过集中参数模型模拟研究EECP反搏模式对不同的适应症的影响机制,... 详细信息

目的本文旨在实现针对不同的患者个体,以较优的血流动力学效应为目标,实现个性化的体外反搏(enhanced external counterpulsation,EECP)的闭环反馈调控数值模拟。方法通过集中参数模型模拟研究EECP反搏模式对不同的适应症的影响机制,根据PID控制系统的反馈调节原理,将其应用于体外反搏的研究中,把血液循环系统的闭环式0维集中参数模型作为被控对象,用于个性化体外反搏血流动力学仿真。结合体外反搏局部血流动力学效应评价模型为不同适应症(冠心病或脑卒中)患者设定血流动力学效应优化的个性化目标值,根据设定目标值和当前血流动力学指标之间的误差,通过设置适当的增益系数与误差进行运算来调节不同反搏模式(压力幅值或加压时长)使当前血流动力学指标达到设定目标值。结果反搏压力对于冠状动脉血流动力学指标的增加更加明显。加压时长对于脑动脉的血流动力学效应的影响最为显著。因此对于冠心病患者设定优化目标值舒张压/收缩压(D/S),通过反馈调节反搏压力使当前D/S达到设定D/S,最终使它们之间误差e的绝对值降低至0.06(均<5%),并得到此时的压力幅值。对于脑卒中患者设定目标值脑血流量(cerebral blood flow,CBF),调节系统输入加压时长减小误差,控制系统的输出当前CBF达到设定CBF,使误差e的绝对值降低至0.06(均<5%)并得到此时的加压时长。结论数值模拟中血流动力学指标达到优化目标值时应施加的压力幅值和加压时长可为临床体外反搏优化治疗提供理论依据。

关键词：体外反搏血流动力学效应优化 PID控制系统反馈调控数值模拟

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S-CO_(2)煤粉锅炉NO_(x)超低排放设计与优化

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东南大学学报（自然科学版） 2022年第1期52卷 16-24页

作者：陈明燕钟文琪陈曦东南大学能源热转换及其过程测控教育部重点实验室南京210096

为了实现超临界二氧化碳(S-CO_(2))布雷顿循环燃煤发电的NO_(x)超低排放,首先对一台1000 MW级S-CO_(2)煤粉锅炉进行了热力系统分析与燃烧数值试验,以获得尾部烟道温度分布以及炉膛出口烟气特性;在此基础上,构建了NO_(x)超低排放设计方案... 详细信息

为了实现超临界二氧化碳(S-CO_(2))布雷顿循环燃煤发电的NO_(x)超低排放,首先对一台1000 MW级S-CO_(2)煤粉锅炉进行了热力系统分析与燃烧数值试验,以获得尾部烟道温度分布以及炉膛出口烟气特性;在此基础上,构建了NO_(x)超低排放设计方案,采用数值模拟与正交试验相结合的方法研究了结构参数对脱硝性能的影响规律,并对SCR脱硝系统的内部结构进行优化.结果表明,S-CO_(2)煤粉锅炉炉膛出口温度比传统水蒸气锅炉高,需将该锅炉的空气预热器分为2级,将SCR脱硝反应器置于2级空气预热器之间,SCR脱硝反应器前端的空气预热器吸热量为215.83 MW.催化剂上游结构对催化层入口速度偏差影响最大.优化后的脱硝系统第1层催化剂入口相对标准偏差系数为10.19%.

关键词： S-CO_(2)燃煤锅炉脱硝选择性催化还原数值模拟正交试验

Determination of Salt Impurities in MDEA Solution Used in Desulfurization of Highly Sulphurous Natural Gas

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China Petroleum Processing & Petrochemical Technology 2015年第3期17卷 25-31页

作者： Liu Yucheng Zhang Bo chen mingyan Wu Danni Zhou Zheng School of Chemistry and Chemical Engineering Southwest Petroleum University Puguang Branch of Zhongyuan Oilfield Company

The foaming phenomenon of N-methyldiethanolamine(MDEA) solution used in desulfurization process occurs frequently in the natural-gas purification plant. The foaming phenomenon has a strong impact on operation of the process unit. The salt impurities are the main reason for causing the foaming of MDEA solution, so the full analysis of salt impurities is necessary. A method for comprehensive analysis of salt impurities in MDEA solution used in desulfurization process was established. Anions and non-metallic cations of MDEA solution were determined by different conditions of ion chromatograph, respectively. Metallic cations of the solution were detected by atomic absorption spectrophotometer with the N2O-C2H2 flame absorption. The analytical results of salt impurities in the desulfurization solution can provide a theoretical basis for an accurate analysis of the factors affecting the foaming of MDEA to unveil further control measures.

关键词： natural-gas purification plant MDEA solution salt impurities full analysis ion chromatograph

Ultrahigh flux of graphene oxide membrane modified with orientated growth of MOFs for rejection of dves and oil-water separation

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Chinese Chemical Letters 2020年第10期31卷 2683-2688页

作者： Meng Zhu Yucheng Liu mingyan chen Dong Gan Maoren Wang Haojie Zeng Maoqi Liao Jie chen Wenwen Tu Wen Niu College of Chemistry and Chemical Engineering Southwest Petroleum UniversityChengdu 610500China Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization Southwest Petroleum UniversityChengdu 610500 China

Metal organic frameworks(MOFs)has broad application prospect in separation,catalysis,and *** a facile green method,we successfully fabricated prGO@cHKUST-1 composite membrane with the modification of dopamine and orientated growth of ***/AI-layered double hydroxides(Mg/Al-LDHs)was used as a modulator to obtain cubic HKUST-1(cHKUST-1)with excellent morphology and special *** Electron Microscopy(SEM),X-ray diffraction(XRD),and Fourier transform infrared spectroscopy(FTIR)*** rization illustrated successful synthesis of cHKUST-1 and composite *** HKUST-1 can tune the inter-layer spacing of graphene oxide(GO)leading increase in hydrophilicity and flux of the ***,the reduction effect of PDA and intercalation effect of MOFs could change the stacked way of GO layers,forming several fuzzy pores and more active sites on membrane *** prGO@cHKUST-1 membrane has an excellent rejection for methylene blue(MB)(99.5%)and Congo red(CR)(71.2%).Moreover,the modified membra ne exhibited 10 and 5 times higher permeation flux than that of original GO membrane and prGO membrane,***,using orientated growth of MOFs to synthesize GO based composite membrane will provide useful insights in ultrahigh permeation flux membranes of dye and oil-water emulsion separation.

关键词： GO composite membrane Metal organic frameworks Mg/Al-LDHs Orientated growth Ultra-high flux

Research on motor rotation anomaly detection based on improved VMD algorithm

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Railway Sciences 2024年第1期3卷 18-31页

作者： Fuzhao chen Zhilei chen Qian chen Tianyang Gao mingyan Dai Xiang Zhang Lin Sun China Academy of Railway Sciences Corporation Limited Locomotive and Car Research InstituteBeijingChina Brake Development Department Beijing Zongheng Electro-Mechanical Technology Co.Ltd.BeijingChina Process Management Department Beijing Zongheng Electro-Mechanical Technology Co.Ltd.BeijingChina

Purpose–The electromechanical brake system is leading the latest development trend in railway braking *** tolerance stack-up generated during the assembly and production process catalyzes the slight geometric dimensioning and tolerancing between the motor stator and rotor inside the electromechanical *** tolerance leads to imprecise brake control,so it is necessary to diagnose the fault of the motor in the fully assembled electromechanical brake *** paper aims to present improved variational mode decomposition(VMD)algorithm,which endeavors to elucidate and push the boundaries of mechanical synchronicity problems within the realm of the electromechanical brake ***/methodology/approach–The VMD algorithm plays a pivotal role in the preliminary phase,employing mode decomposition techniques to decompose the motor speed ***,the error energy algorithm precision is utilized to extract abnormal features,leveraging the practical intrinsic mode functions,eliminating extraneous noise and enhancing the signal’s *** refined signal then becomes the basis for fault *** the analytical step,the cepstrum is employed to calculate the formant and envelope of the reconstructed *** scrutinizing the formant and envelope,the fault point within the electromechanical brake system is precisely identified,contributing to a sophisticated and accurate fault ***–This paper innovatively uses the VMD algorithm for the modal decomposition of electromechanical brake(EMB)motor speed signals and combines it with the error energy algorithm to achieve abnormal feature *** signal is reconstructed according to the effective intrinsic mode functions(IMFS)component of removing noise,and the formant and envelope are calculated by cepstrum to locate the fault *** show that the empirical mode decomposition(EMD)algorithm can effectively decompose the original speed *** feature extraction,si

关键词： Electromechanical brake system Railway brake system Motor fault diagnosis Variational mode decomposition Error energy Feature extraction