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腹腔镜辅助腹横肌平面阻滞在腹股沟疝修补术后镇痛中的应用

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中华疝和腹壁外科杂志（电子版） 2024年第1期18卷 102-105页

作者：马自达孟岩郭宏坤孙少川孙中伟济南市中心医院胃肠外科 250013 济南市中心医院手术麻醉科 250013 山东第一医科大学研究生部济南250117

目的观察腹腔镜辅助腹横肌平面阻滞用于腹股沟疝术后镇痛的效果。方法选取2022年1—8月济南市中心医院胃肠外科腹股沟疝患者90例,采用随机数字法随机将患者分成对照组和试验组,各45例。2组均行腹腔镜经腹腹膜前修补术。试验组术中加行... 详细信息

目的观察腹腔镜辅助腹横肌平面阻滞用于腹股沟疝术后镇痛的效果。方法选取2022年1—8月济南市中心医院胃肠外科腹股沟疝患者90例,采用随机数字法随机将患者分成对照组和试验组,各45例。2组均行腹腔镜经腹腹膜前修补术。试验组术中加行患侧腹横肌平面罗哌卡因阻滞。记录术后4、6、12、24、48、72 h的疼痛视觉模拟评分(VAS)和腹横肌平面阻滞相关不良反应发生情况。结果试验组在术后4、6、12 h的VAS评分均较对照组显著降低[2(1,2)vs 3(2,3)、2(2,2)vs 3(3,4)、3(2,3)vs 4(3,4),P均0.05)。2组不良反应发生率比较,差异无统计学意义(P>0.05)。结论腹腔镜辅助腹横肌平面阻滞用于腹股沟疝术后镇痛效果好,且安全性高。

关键词：腹横肌平面阻滞疝,腹股沟术后镇痛

Anti-aggregation growth and hierarchical porous carbon encapsulation enables the C@VO_(2) cathode with superior storage capability for aqueous zinc-ion batteries

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Journal of Energy Chemistry 2022年第4期31卷 645-654页

作者： Ming Yang Yanyi Wang zhongwei sun Hongwei Mi Shichang sun Dingtao Ma Peixin Zhang College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongChina College of Materials Science and Engineering Xi’an University of Architecture and TechnologyXi’an 710055ShaanxiChina Shenzhen Hello Tech Energy Co. Ltd.Shenzhen 518100GuangdongChina Guangdong Engineering Technology Research Center for Distributed and Intelligent Small Solar Energy Storage Shenzhen 518100GuangdongChina

Self-aggregation and sluggish transport kinetics of cathode materials would usually lead to the poor electrochemical performance for aqueous zinc-ion batteries(AZIBs).In this work,we report the construction of C@VO_(2) composite via anti-aggregation growth and hierarchical porous carbon *** of the morphology of composite and pore structure of carbon layer can be regulated by tuning the adding amount of *** acting as cathode applied for AZIBs,the C@VO_(2)-3:3 composite can deliver a high capacity of 281 m Ah g^(-1) at 0.2 A g^(-1).Moreover,such cathode also exhibits a remarkably rate capability and cyclic stability,which can release a specific capacity of 195 m Ah g^(-1) at 5 A g^(-1) with the capacity retention of 95.4%after 1000 *** that,the evolution including the crystal structure,valence state and transport kinetics upon cycling were also deeply *** conclusion,benefited from the synergistic effect of anti-aggregation morphology and hierarchical porous carbon encapsulation,the building of such C@VO_(2) composite can be highly expected to enhance the ion accessible site,boost the transport kinetics and thus performing a superior storage *** design concept can be applied for other kinds of electrode materials and accelerating the development of highperformance AZIBs.

关键词： Aqueous zinc-ion batteries Anti-aggregation Hierarchical porous carbon encapsulation C@VO_(2)composite Storage mechanism

微塑料对四角蛤蜊滤食、呼吸和免疫指标的影响

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海洋科学 2024年第6期48卷 33-42页

作者：唐瑞锴杨光孙中伟唐佳伟王鑫马晓娜冯志华江苏海洋大学江苏省海洋生物资源与环境重点实验室江苏连云港222005 江苏海洋大学江苏省海洋生物技术重点实验室江苏连云港222005 江苏海洋大学江苏省海洋生物产业技术协同创新中心江苏连云港222005

为探讨微塑料对四角蛤蜊生理行为和免疫系统的影响,研究了不同浓度(1×10^(4)粒/L和1×10^(6)粒/L)和不同粒径(1μm和80 nm)的聚苯乙烯(PS)暴露对四角蛤蜊滤食率、呼吸率、丙二醛(MDA)浓度和过氧化氢酶(CAT)､超氧化物歧化酶(SOD)､酸性... 详细信息

为探讨微塑料对四角蛤蜊生理行为和免疫系统的影响,研究了不同浓度(1×10^(4)粒/L和1×10^(6)粒/L)和不同粒径(1μm和80 nm)的聚苯乙烯(PS)暴露对四角蛤蜊滤食率、呼吸率、丙二醛(MDA)浓度和过氧化氢酶(CAT)､超氧化物歧化酶(SOD)､酸性磷酸酶(ACP)、碱性磷酸酶(AKP)活性的影响。结果表明,仅1μm低浓度组对四角蛤蜊滤食率有显著影响;在高浓度、大粒径微塑料暴露下的四角蛤蜊呼吸率显著上升;SOD和CAT活性均在实验初期显著上升,实验后期呈下降趋势;ACP的活性在实验前期显著上升,在后期逐渐下降至与对照组无显著差异;AKP活性在3d后发生显著性变化,且低浓度组活性高于高浓度组;MDA浓度显著上升,并呈现出高浓度组大于低浓度组、小粒径组大于大粒径组的规律。不同浓度、粒径、暴露时间会对各项指标产生影响,四角蛤蜊鳃中MDA的浓度可作为未来评估海洋微塑料污染的可靠指标。

关键词：微塑料四角蛤蜊滤食率呼吸率免疫系统

PERFORMANCE IMPROVEMENT OF CENTRIFUGAL FAN BY MEANS OF NUMERICAL SIMULATION

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Chinese Journal of Mechanical Engineering 2006年第1期19卷 55-58页

作者： ZHANG Bo HUANG Shujuan sun zhongwei HUI Shien LIU Jiayu QI Chunsong Institute of Energy and Power Engineering Xi＇ an Jiaotong University Xi＇ an 710049 China Thermal Power Research Institute State Power Corporation of China Xi＇ an 710032 China

Numerical simulation is used to investigate the flow field in a model centrifugal fan for steam power stations in order to improve the performance. During testing the model fan, it is found that the efficiency is only 62.5% with inlet box, without it the efficiency is 83%. In addition, the strong vibration of test rig is observed with inlet box. It would be highly desirable if the aerodynamics of the fan could be studied. Therefore, numerical simulation is carried out to investigate the internal flow characteristics of a model fan with inlet box. The results from CFD analysis show that the whole region of the inlet box is occupied by a spiral vortex rotating inversely as the rotor＇s direction, which significantly affect the most flow＇region inside the fan. For this reason, a dummy plate is arranged in the inlet box to impede the generation of the spiral vortex, the results from CFD after the reform demonstrate that the modification is quiet effective, the former large spiral vertex has been destroyed effectively, the large one is superseded in favor of two small vortexes. However, two small vortexes have little effect on the inner flow of the rotor and the following parts. Finally, the efficiency of the model fan is improved by the test and the strong vibration of the test rig disappears. This type of modification has been used in steam power stations, the fan efficiency raises to 84% successfully.

关键词： Numerical simulation Centrifugal fan Vortex Performance improvement

An Anonymous Authentication Scheme for Vehicle-to-Grid Networks

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International Journal of Communications, Network and System Sciences 2017年第8期10卷 316-323页

作者： zhongwei sun School of Electrical and Electronic Engineering North China Electric Power University Beijing China

Vehicle to grid technology allows bidirectional energy exchange between electric vehicles and the power grid for achieving many known benefits. However, V2G networks suffer from certain security threats, such as EV’s privacy and authentication problem. In this paper, we propose an anonymous group authentication scheme for V2G communications. This scheme realizes dynamic joining and revocation of EVs, and greatly reduces the overhead of EV revocation. Through the theoretical analysis, this scheme can ensure identity privacy of EV user and security of data transmission in the process of charging and discharging.

关键词： Electric Vehicles Vehicle to Grid Group Signature Anonymity Authentication

Security and Privacy-Preserving Metering Service in the Smart Grid

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International Journal of Communications, Network and System Sciences 2017年第8期10卷 307-315页

作者： zhongwei sun Chuqi Song School of Electrical and Electronic Engineering North China Electric Power University Beijing China

The deployment of smart metering provides an immense amount of data for power grid operators and energy providers. By using this data, a more efficient and flexible power grid can be realized. However, this data also raises privacy concerns since it contains very sensitive information about customers. In this paper, we present a security and privacy-preserving metering scheme for the community customers, by utilizing the password authenticated key exchange (PAKE) protocol and Elliptic Curve Cryptosystem (ECC). The proposed scheme will protect the community network from possible malicious behavior, and security analysis is also given in the paper.

关键词： Community Password Authentication Elliptic Curve Cryptography (ECC) Privacy

Study on Apoptosis-Inducing Effect of XIAP Antisense Oligonucleotides on Glioblastoma Cells in Vitro

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Chinese Journal of Clinical Oncology 2009年第2期6卷 142-146页

作者： zhongwei Zhao Zhengchun sun Yunhan Zhang Ming Zhang Xudong Ma Department of Neurosurgery ZhengzhouNo. 1 People's Hospital Zhengzhou 450052Henan Province. China

OBJECTIVE To investigate the apoptosis-inducing effect of XIAP antisense oligonucleotides on glioblastoma cells in vitro. METHODS There were 4 groups in our experiment. Group A, as a cell control group, had normal cell culture and no treatment applied. Group B, as a blank control group, had normal cell culture and no liposome control of ASODN. Group C was N-ODN. Group D was the ASODN group. RT-PCR and Western blot assay were conducted to detect the expression of XIAP in all A-172 ceil groups after treatment with XIAP antisense oligonucleotides （ASODN）. MTT assay and flow-cytometry （FCM） detection were used to detect the ability of cell anchoring growth and apoptotic rates of all groups. The processing time was 72 h. RESULTS The expression of XIAP in the A-172 cells was greatly down-regulated, after treated with XIAP-ASODN. Among different concentrations of ASODN, the 300nM was the most optimal one. The down-regulation of XIAP obviously inhibited the succinate dehydrogenase （SDH） activity of the A-172 cells and the increased apoptotic rate of A-172 cells （87.45%） was significantly higher than that of the A-172 in the control groups. There was a statistically significant difference between the treatment and control groups （P 〈 0.01）. CONCLUSION The XIAP-ASODN can effectively regulate the expression of the XIAP down, as a result, inhibit the growth of the glioblastoma cells （A-172） and obviously increase the apoptotic rate of the A-172 cells. The results killing role of XIAP-ASODN to the of the study manifest an overt glioblastoma cells.

关键词： antisense oligonucleotides glioblastoma apoptosis.

A first-in-man study of the bioheart sirolimus-eluting bioresorbable vascular scaffold in patients with coronary artery disease:one-year clinical and imaging outcomes

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中国循环杂志 2018年第S1期33卷 136-137页

作者： Changdong Guan Lijian Gao zhongwei sun Shubin Qiao Haibo Liu Fenghuan Hu Yongjian Wu Bo Xu Department of Cardiology National Center for Cardiovascular Dsi eases and Fuwai HospitalCAMS and PUMCBeijingChina

Background Current studies,including randomized trials and meta-analyses evaluating clinical Results of bioresorbable scaffold(BRS),have raised concerns about the first-generation device with thicker struts and limited expansion *** BRS with thinner struts and improved deliverability are expected to enhance safety and efficacy ***(Bio-Heart,Shanghai,China)BRS is constructed from a PLLA backbone coated with a PDLLA layer eluting *** Results have proved preliminary safety and effectiveness of the Bioheart BRS in patients with single de novo coronary artery *** sought to report serial intracoronary imaging findings at 1 year.

关键词： bioresorbable scaffold Bioheart PDLLA

Situational latent class model of activity-travel decisions under travel information provision and uncertainty

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西部人居环境学刊 2016年第S1期 44-52页

作者： zhongwei sun Theo Arentze Harry Timmermans College of Architecture and Urban Planning Chongqing University Eindhoven University of Technology

Travel information may result in activity-travel rescheduling decisions,which goes beyond simple route/link choices,and involves multiple uncertain events that may appear at different points in time and *** observed heterogeneity in travelers,daily activity decisions towards risk can be modeled as an outcome of heterogeneity in personal traits on the one hand;they can be modeled as the outcome of the differences in travel situations on the *** paper develops a decision model that focuses on situational heterogeneous behavior *** this model,travelers make their travel decisions using different decision heuristics based on different travel situations they *** risk attitxude heuristics are employed,namely,risk aversive,risk neutral and risk *** events and decision under uncertainty are represented by a decision tree *** model is empirically estimated by using a customized EM *** results of the model estimation suggest that the individuals show a tendency of adapting their risk attitudes to certain activity situations,and the situation-dependent model is nearly as good as individual model.

关键词： Uncertainty Activity-travel rescheduling Decision styles Risk attitudes Situational model