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Inhibitory effect of three biopolymer materials on scar formation following trabeculectomy

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International Journal of Ophthalmology(English edition) 2011年第4期4卷 380-383页

作者： Sha, Qian Jiao, Guang-Yu cui, Hai-bin Wang, Jie Sun, Li-bin Chen, Ming Fu, Song-bin Harbin Med Coll Harbin 150001 Heilongjiang Pr Peoples R China China Med Univ Shengjing Hosp Dept Ophthalmol Shenyang 110004 Liaoning Provin Peoples R China Eye Dis Prevent Inst Harbin 150001 Heilongjiang Pr Peoples R China Heilongjiang Prov Hosp Dept Ophthalmol Harbin 150001 Heilongjiang Pr Peoples R China

AIM: To investigate the inhibitory effects of amniotic membrane, polylactic acid membrane and chitosan membrane on scar formation following trabeculectomy. METHODS: A total of 24 New Zealand white rabbits (48 eyes) were randomly divided into 4 groups: amniotic membrane group, polylactic acid membrane group, chitosan membrane group, and control group, with 6 rabbits (12 eyes) in each group. The left eyes underwent routine trabeculectomy, and the right eyes were considered as controls. Amniotic membrane, polylactic acid membrane and chitosan membrane were respectively installed under sclera flap in three groups, but any treatment was not applied in control group. Intraocular pressure, conjunctival filtering bleb, and anterior chamber inflammation responses were monitored at day 1, 3, 7, 14, 28 and 56 post-operatively. Eyeball tissue underwent histopathological examination at day 56 post-operatively. RESULTS: Fibrocytes and inflammatory cells were reduced in amniotic membrane, polylactic acid membrane and chitosan membrane groups compared to that in control group. At day 1 post-operatively, intraocular pressure was decreased in three membrane groups compared to that in control group. At day 14 post-operatively, the intraocular pressure was decreased significantly, while it of three membrane groups was significantly lower than that of preoperative (P0.05). Filtering bleb of four groups was clearly observed at day 7 post-operatively, but there was no significant difference in pair-wise comparison. At day 28 and 56 post-operatively, filtering bleb in control group was significantly narrowed compared to that in three membrane groups (P <0.05), but there was no significant difference in pair-wise comparison of three membrane groups. CONCLUSION: All amniotic membrane, polylactic acid membrane and chitosan membrane can effectively inhibit scar formation following trabeculectomy, the effect of amnioti

关键词： amniotic membrane polylactic acid membrane chitosan membrane glaucoma filtration surgery

Characteristics for the hybrid cell Foaz obtained from the protoplast fusion between yeast and photosynthetic bacteria in soybean processing wastewater

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Journal of Environmental Sciences 1998年第3期10卷 110-116页

作者： Cheng Shu-pei cui Yi-bin Dai Le-mei The State Key Laboratory of Pollution Control and Resource Reuse Department of Environmental Science and EngineeringNanjing UniversityNanjing 210093China The Center of Analysis and Measurement Nanjing UniversityNanjing 210093China

The optimal pH and temperature, maximum specific degradation rate, half rate constant and flocculation rate for the hybrid cell Foaz were measured in the reaction for the degradation of soybean processing wastewater(SPW) in this study. The optimal pH and temperature for Foaz in SPW were the same as those of its parental strains Saccharomyces cerevisiae Y9407 and Rhodobacter sphaeroides P9479, but the flocculation rate, the maximum specific degradation rate and the half rate constant for Foaz were higher than those of its parental strains. The results suggest that the characteristics of the inter kingdom fusant Foaz constructed from the protoplast fusion between the eukaryote cell yeast S. cerevisiae and the prokaryote cell photosynthetic bacteria R. sphaeroides may favor degrading organic pollutant in SPW and removing biomass from the effluent.

关键词： Saccharomyces cerevisiae Rhodobacter sphaeroides  soybean processing wastewater.

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基于科学引文数据库的临床思维研究分析

中华医学教育杂志 2024年第5期44卷 353-359页

作者：崔斌徐博轩姚泰康张焕程化琴航天中心医院北京大学航天临床医学院影像科北京100049 北京大学医学部北京100191 全国医学教育发展中心北京大学医学教育研究所北京100191

目的检索基于科学引文数据库(Web of Science,WOS)的临床思维研究文献,描绘其外部特征并揭示其研究主题,为我国临床思维教学与评价改革提供参考。方法采用HistCite文献计量分析软件,以WOS核心合集中从数据库建立到2022年12月31日相关文... 详细信息

目的检索基于科学引文数据库(Web of Science,WOS)的临床思维研究文献,描绘其外部特征并揭示其研究主题,为我国临床思维教学与评价改革提供参考。方法采用HistCite文献计量分析软件,以WOS核心合集中从数据库建立到2022年12月31日相关文献为研究对象,以“clinical thinking”或“clinical reasoning”为检索主题词,对数据库中相关文章数量、机构分布、研究方向与前沿主题等进行分析,梳理临床思维研究总体态势。结果共检索到3094篇文献,临床思维研究的发文量可以大致划分为3个发展阶段:起步期(1966至1990年,年发文量维持在个位数)、上升期(1991至2011年,年发文量在50至100篇)、陡升期(2012年至今,2022年发文量达341篇)。发文量排在第一的机构是加拿大蒙特利尔大学,共发表80篇。高频关键词有教学(teaching)、一致性(concordance)和脚本(script)等。研究前沿主题集中于临床思维的本质,对临床思维的评估和如何开展临床思维教学这3个方面,出现对普适性指南制定的呼吁。结论临床思维研究发文量不断增长,中国发文量较低;发文机构多集中于英美两国,研究内容多集中在对临床思维综合性分析和思考,实证研究不足;逐步出现对脚本、教学和评价等专题的研究。未来我国应该重视对临床思维的理论研究,重点关注构建临床思维的教学和评价体系、新兴技术在临床思维的应用以及制定普适性的指南与规范,并提高研究的国际展示度及影响力。

关键词：临床思维文献计量学科学引文数据库

铸造ZG0Cr16Ni4Cu3Nb耐热钢显微组织与力学性能分析

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山东冶金 2024年第4期46卷 37-39页

作者：马中钢李娜崔彬李化坤逯红果山东瑞泰新材料科技有限公司山东淄博256100

研究了砂箱、单壳对铸造ZG0Cr16Ni4Cu3Nb耐热钢显微组织和力学性能的影响。研究表明:采用砂箱、单壳的方式浇注力学试棒,显微组织主要为板条状马氏体、δ-铁素体、M23C6型碳化物和NbC碳化物;不同点在于,采用砂箱的试棒,基体上存在纳米... 详细信息

研究了砂箱、单壳对铸造ZG0Cr16Ni4Cu3Nb耐热钢显微组织和力学性能的影响。研究表明:采用砂箱、单壳的方式浇注力学试棒,显微组织主要为板条状马氏体、δ-铁素体、M23C6型碳化物和NbC碳化物;不同点在于,采用砂箱的试棒,基体上存在纳米尺寸的富铜析出相。力学结果表明,采用砂箱的方式浇注试棒,力学性能优于采用单壳的方式浇注试棒。

关键词：耐热钢 δ-铁素体显微组织力学性能

陆军飞行人员领悟社会支持与疲劳、焦虑的相关性研究

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陆军军医大学学报 2024年第1期46卷 46-52页

作者：余静李森龙在云夏雨康露刘媛杨策邹龑于鑫刘致权吴方舟崔斌严军陆军军医大学(第三军医大学)大坪医院特殊环境战伤防治研究室创伤与化学中毒全国重点实验室重庆400042

目的探讨陆军飞行人员领悟社会支持与疲劳、焦虑发生的相关性,为精准干预研究奠定基础。方法于2022年7月10-13日随机抽取某部飞行人员,采用领悟社会支持、多维疲劳和焦虑量表进行问卷调查(n=88);利用座谈和个别交流方式补充了解陆军飞... 详细信息

目的探讨陆军飞行人员领悟社会支持与疲劳、焦虑发生的相关性,为精准干预研究奠定基础。方法于2022年7月10-13日随机抽取某部飞行人员,采用领悟社会支持、多维疲劳和焦虑量表进行问卷调查(n=88);利用座谈和个别交流方式补充了解陆军飞行人员领悟社会支持现状及其与疲劳、焦虑状态的关系;通过SPSS 20.0软件对该人群上述指标进行相关分析,计量资料采用描述性分析,计数资料采用频率分析,Pearson分析变量间的相关性。结果纳入分析问卷85份(每份含领悟社会支持、多维疲劳和焦虑量表)。其中男性83人(97.65%),女性2人(2.35%);飞行员80人(94.11%),领航员2人(2.35%),空中机械师3人(3.53%)。20~39岁82人(96.47%)。高社会支持(分值61~84)人数占比为68.23%(58/85),低、中焦虑度(分值0.05),焦虑与疲劳之间相关性也不显著(P>0.05)。结论陆军飞行人员领悟社会支持程度可能会引发焦虑,进而影响作业能力和健康水平;应对该人群领悟社会支持进行精准干预以完善航卫保障。

关键词：陆军航空兵飞行人员领悟社会支持疲劳焦虑

Development and validation of a model for predicting wheel wear in high-speed trains

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2017年第8期18卷 603-616页

作者： Gong-quan TAO Xing DU He-ji ZHANG Ze-feng WEN Xue-song JIN Da-bin cui State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu 610031 China Department of Mechanical Engineering Emei Campus of Southwest Jiaotong University Emei 614202 China

In this paper, we present a comprehensive model for the prediction of the evolution of high-speed train wheel profiles due to wear. The model consists of four modules： a multi-body model implemented with the commercial multi-body software SIMPACK to evaluate the dynamic response of the vehicle and track; a local contact model based on Hertzian theory and a novel method, named FaStrip （Sichani et al., 2016）, to calculate the normal and tangential forces, respectively; a wear model proposed by the University of Sheffield （known as the USFD wear function） to estimate the amount of material removed and its distribution along the wheel profile; and a smoothing and updating strategy. A simulation of the wheel wear of the high-speed train CRH3 in service on the Wuhan-Guangzhou railway line was performed. A virtual railway line based on the statistics of the line was used to represent the entire real track. The model was validated using the wheel wear data of the CRH3 operating on the Wuhan- Guangzhou line, monitored by the authors＇ research group. The results of the predictions and measurements were in good agreement.

关键词： High-speed train Wheel profile Wheel/Rail contact Wheel wear prediction

人才培养和学科发展的支撑和保障:西北大学化学国家级实验教学示范中心建设的探索与实践

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大学化学 2024年第7期39卷 140-146页

作者：李安阳宁晓辉任智卉孙伟李延崔斌西北大学化学与材料科学学院化学国家级实验教学示范中心(西北大学)西安710127

作为支撑人才培养和学科发展的重要基地,西北大学化学国家级实验教学示范中心通过构建起三层次的实验课程体系,配合以四阶段的实践教学环节,有效提升了学生的科研能力和创新思维;并且中心的大型科学仪器平台为化学及相关学科的研究提供... 详细信息

作为支撑人才培养和学科发展的重要基地,西北大学化学国家级实验教学示范中心通过构建起三层次的实验课程体系,配合以四阶段的实践教学环节,有效提升了学生的科研能力和创新思维;并且中心的大型科学仪器平台为化学及相关学科的研究提供先进的技术支持,加速了科研成果的产出,促进了学术交流与合作。同时,中心强化了实验室安全管理,为师生提供了可靠的研究与学习空间;此外,中心积极开展科普活动和对外交流,提升了公众的科学素养,展现了化学学科的社会价值。面向未来,中心将继续优化教学模式,提升科研服务水平,为培养高素质化学人才和推动化学学科的发展做出更大的贡献。

关键词：实验教学改革科学仪器运维实验室安全管理

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Analysis of retained austenite in TRIP590 steel by electron backscattered diffraction method

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Journal of Iron and Steel Research International 2020年第3期27卷 355-365页

作者： Yu-cheng Zhang Yang Meng Gui-bin cui Hui-ping Jia Xin-hua Ju Zhong-hang Jiang Ze-jun Ma Bruker(Beijing)Scientific Technology Co. Ltd.Beijing 100192.China Research Institute of Technology Shougang Group Co.Ltd.Beijing 100043China

The retained austenite content in TRIP590 steel was first measured by X-ray diffraction(XRD)***,the effect of different test parameters(indexing rate,step size,field number,etc.)on the measured results of retained austenite content in TRIP590 steel by electron backscattered diffraction(EBSD)method was *** comparing the measured results between XRD and EBSD method,the optimal test parameters for the analysis of retained austenite content using EBSD were ***,the total content of retained austenite and the retained austenite contents with different aspect ratios in TRIP590 steel were analyzed,*** results showed that the test parameters have a great influence on the measured results of retained austenite content in TRIP590 *** order to improve the test accuracy,high indexing rates,small step sizes and more field number are necessary for the analysis of retained austenite content in TRIP590 steel by EBSD method.

关键词： TRIP590 steel Retained austenite Electron backscattered diffraction Indexing rate Step size

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基于光谱成像仪的量子化能级测试与分析

物理实验 2024年第6期44卷 39-43页

作者：杨玉平王雯慧贺倩汪琛钟梓源崔彬施洪龙邹斌中央民族大学理学院北京100081

以反射式光栅和CCD为核心器件,搭建了反射式光谱成像仪,开发程序对CCD输出的光敏像元与待测光谱波长之间的关系进行快速定标和可视化处理,进而对特定气体原子或分子的量子化能级进行测试和光谱分析,并对该量子化能级测量试验仪的性能进... 详细信息

以反射式光栅和CCD为核心器件,搭建了反射式光谱成像仪,开发程序对CCD输出的光敏像元与待测光谱波长之间的关系进行快速定标和可视化处理,进而对特定气体原子或分子的量子化能级进行测试和光谱分析,并对该量子化能级测量试验仪的性能进行了评估与不确定评定.实验系统的搭建与测试,增加了学生的动手能力,加深了学生对能级的量子化、原子内部结构和运动特征等知识的深入理解.

关键词：原子发射光谱反射式光栅光谱仪量子化能级可视化