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Corneal injury and its protection using hydro-gel patch during general anesthesia

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International Journal of Ophthalmology(English edition) 2014年第6期7卷 964-967页

作者： Ting wan Yan wang Xiu-Ming Jin Eye Center the Second Affiliated Hospital of Zhejiang University School of Medicine Zhejiang Provincial Key Lab of Ophthalmology Nursing Department the Second Affiliated Hospital of Zhejiang University School of Medicine

AIM: To evaluate corneal injury during general anesthesia and analyze the protective effect of medical hydro-gel eye patch in ***:Seventy-sixpatientswith152 eyesundergoing general anesthesia were included. None had positive corneal fluorescein staining before surgery. Both eyes of each patient were analyzed, with one randomly allocated to receive medical hydro-gel eye patch, and the other to receive common adhesive tape as a control. Corneal injuries were evaluated by scoring fluorescein staining under a hand-held slit lamp immediately after surgery in postanesthesia care unit and 24 h thereafter. Patients’ discomforts were also ***: Twelve eyes(15.8%) in the hydro-gel patch group and 30 eyes(39.5%) in the adhesive tape group showed corneal injury immediately after surgery. The eyes protected with hydro-gel patch showed statistically less corneal fluorescein staining than the control *** eyes in hydro-gel patch group and 6 eyes in adhesive tape group suffered discomfort immediately after surgery without intergroup difference and all discomforts disappeared after 24h(P =0.257). No side effect was observed in hydro-gel patch group, while 5eyes had brow avulsion and 2 got skin itching in adhesive tape ***: Corneal injury complication was morefrequent than we thought following general *** medical hydro-gel eye patch can protect the occurrence of corneal injury following general anesthesia.

关键词： general anesthesia corneal injury fluorescein staining hand-held slit lamp hydro-gel

A Class of Nonlinear Singularly Perturbed Problems for Reaction Diffusion Equations with Boundary Perturbation

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Acta Mathematicae Applicatae Sinica 2006年第1期22卷 27-32页

作者： Jia-qi Mo wan-tao Lin Department of Mathematics Huzhou Teachers College Huzhou 313000 China Division of Computational Science E-Institutes of Shanghai Universities at SJTU Shanghai 200240 China LASC Institute of Atmosheric Physics Chinese Academy of Sciences Bcijing 100029 China

A class of nonlinear singularly perturbed problems for reaction diffusion equations with boundary perturbation are considered. Under suitable conditions, the asymptotic behavior of solution for the initial boundary va... 详细信息

关键词： Nonlinear reaction diffusion singular perturbation ,boundary perturbation

Interannual Relationship between the Winter Aleutian Low and Rainfall in the Following Summer in South China

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Atmospheric and Oceanic Science Letters 2015年第5期8卷 271-276页

作者： SONG Lin-Ye DUAN wan-Suo State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

Using observations and reanalysis data, this study investigates the interannual relationship between the winter Aleutian Low(AL) and the rainfall anomalies in the following summer in South China(SC). Results show that the winter AL is significantly positively(negatively) correlated with the SC rainfall anomalies in the following July(August). Specifically, SC rainfall anomalies have a tendency to be positive(negative) in July(August) when the preceding winter AL is stronger than normal. The winter AL-related atmospheric circulation anomalies in the following summer are also examined. When the winter AL is stronger, there is a significant anticyclonic(cyclonic) circulation anomaly over the subtropical western North Pacific in the following July(August). Southerly(northerly) wind anomalies to the west of this anomalous anticyclonic(cyclonic) circulation increase(decrease) the northward moisture transportation and contribute to the positive(negative) rainfall anomalies over SC in July(August). This study indicates that the AL in the preceding winter can be used as a potential predictor of the rainfall anomalies in the following July and August over SC.

关键词： Aleutian Low South China rainfall atmospheric circ

SCR7000铜杆生产的铸轮结晶器结垢机理分析

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特种铸造及有色合金 2024年第1期44卷 99-104页

作者：梁震江郑万刘鹏明江勇陈迪望张文文武汉科技大学耐火材料与冶金国家重点实验室武汉430081 武汉科技大学钢铁冶金新工艺湖北省重点实验室武汉430081 中色大冶黄石晟祥铜业有限公司黄石435001

采用SEM、EDS及XRD分析了某SCR 7000铸轮结晶器表面结垢层,结合喷淋冷却水与高温铸轮相互作用探究了铸轮结晶器结垢机理。研究表明,铸轮结晶器内腔凹槽垢层由炭黑、Cu、Cu_(2)O和CaO等物相混合组成,是乙炔燃烧不完全形成的炭黑富集、冲... 详细信息

采用SEM、EDS及XRD分析了某SCR 7000铸轮结晶器表面结垢层,结合喷淋冷却水与高温铸轮相互作用探究了铸轮结晶器结垢机理。研究表明,铸轮结晶器内腔凹槽垢层由炭黑、Cu、Cu_(2)O和CaO等物相混合组成,是乙炔燃烧不完全形成的炭黑富集、冲渣水中CaCO_(3)浓缩析出、高温分解及Cu结晶器、铜坯的高温扩散等因素复合形成的,而铸轮结晶器底部与外侧垢层主要由CaCO_(3)组成。这是因铸机冷却水蒸发、水处理能力不足导致铸机喷淋水硬度高,在高温铸轮表面CaCO_(3)晶体过饱和析出,铸轮底部喷淋水膜中CaCO_(3)颗粒受离心力作用,加速了CaCO_(3)晶体水垢形成。铸轮结晶器各个面结垢层的物相、厚度、均匀性的差异导致了倒梯形铜坯凝固组织的异常。通过降低铸机浊环水硬度和采用净循环水冲渣的工艺措施,铸轮结垢程度与铜坯凝固组织明显改善。

关键词：铸轮结晶器铜坯凝固组织结垢机理

Research progresses of artificial nucleic acid cleavage agents

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Chinese Science Bulletin 2000年第22期45卷 2017-2028页

作者： Rong wan Gang Zhao Jing Chen Yufen Zhao Tsinghua Univ Dept Chem State Key Lab Bioorgan Phosphorus Chem Educ Minist ChinaSch Life Sci & Engn Beijing 100084 Peoples R China

Artificial nucleic acid cleavage agents have attracted close attention because they play important roles in biochemistry and molecular biology. According to the cleavage mechanism of nucleic acid, they are divided into three types, namely free radical, phosphodiester bond hydrolysis and elimination cleavage agents. In this review, a series of cleavage agents, including the site- and sequence-specific ones, are illustrated, and some suggestions for the future researches in this field are also put forward.

关键词： nucleic acid cleavage agents site-and sequence-specific cleavage agents free radical phosphodiester bond hydrolysis elimination.

膝关节前外侧旋转不稳定的诊断与治疗研究进展

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中华创伤骨科杂志 2024年第3期26卷 272-276页

作者：周毅强吴子英万方李宏陈天午戈允申厦门市中医院骨科厦门361009 复旦大学附属华山医院运动医学科上海200040

前交叉韧带、前外侧复合体和外侧半月板共同维持膝关节的前外侧旋转稳定性,控制胫骨内旋。临床上膝关节前外侧旋转不稳定并不少见,其主要损伤机制是非接触性损伤。轴移试验、胫骨内旋试验可提示前外侧旋转不稳定。X线片、CT、磁共振成... 详细信息

前交叉韧带、前外侧复合体和外侧半月板共同维持膝关节的前外侧旋转稳定性,控制胫骨内旋。临床上膝关节前外侧旋转不稳定并不少见,其主要损伤机制是非接触性损伤。轴移试验、胫骨内旋试验可提示前外侧旋转不稳定。X线片、CT、磁共振成像及超声检查可辅助诊断及鉴别诊断。对于急性前外侧旋转不稳定,良好的前交叉韧带重建技术是避免术后残留前外侧旋转不稳定的基础,前外侧韧带重建及关节外腱固定术可酌情选择;而对于慢性前外侧旋转不稳定,采用前外侧韧带重建或关节外腱固定术治疗均有效。本文对膝关节前外侧旋转不稳定的诊断与治疗研究进展进行综述,以期为临床诊治提供参考。

关键词：膝关节关节不稳定性诊断技术和方法治疗

城镇污水处理厂碳排放核算标准现状分析与比较

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给水排水 2024年第7期50卷 169-174页

作者：贺珊珊陈红芳刘海燕万年红邹磊中国市政工程中南设计研究总院有限公司武汉430010

对国家温室气体排放核算方法标准和指南进行了系统梳理,发现国家层面缺乏城镇污水处理厂碳排放核算标准。对比了现行的6项涉及城镇污水处理厂的碳排放核算标准核算边界及核算因子存在的差异。目前的标准存在核算边界不统一、核算因子差... 详细信息

对国家温室气体排放核算方法标准和指南进行了系统梳理,发现国家层面缺乏城镇污水处理厂碳排放核算标准。对比了现行的6项涉及城镇污水处理厂的碳排放核算标准核算边界及核算因子存在的差异。目前的标准存在核算边界不统一、核算因子差异大等问题,建议下一步可进行行业统一的标准、规范的编制,并进行污水处理厂直接温室气体的监测,促进行业统一标准,此外,还需加强低碳技术的研发,促进行业低碳发展。

关键词：污水处理厂碳排放核算标准

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机组运动状态识别及作业参数计算方法研究

农机化研究 2024年第5期46卷 7-12页

作者：李水晶曹露闫思梦张朋永万盈贝乔金友东北农业大学工程学院哈尔滨150030 黑龙江省主要农作物生产机械化材料化技术创新中心哈尔滨150000 哈尔滨航天恒星数据系统科技有限公司哈尔滨150010

基于农机管理信息平台所获得的农业机组位置海量数据识别机组运动状态可以科学计算机组时间利用率和作业效率,对农业机械化高质量发展具有重要意义。为此,在界定农业机组纯作业状态、转弯状态、停歇状态和转移状态基础上,依据北斗卫星... 详细信息

基于农机管理信息平台所获得的农业机组位置海量数据识别机组运动状态可以科学计算机组时间利用率和作业效率,对农业机械化高质量发展具有重要意义。为此,在界定农业机组纯作业状态、转弯状态、停歇状态和转移状态基础上,依据北斗卫星导航系统获取的农业机组位置海量数据,设计了农业机组各运动状态识别方法,建立了机组时间利用率和生产率等关键作业参数计算模型。研究结果完善了农业机组海量数据处理及应用理论与方法,可为农业机械化生产与经营组织正确评价机组运动状态和效果、有效节约机械作业成本及提升管理水平提供定量技术支撑。

关键词：农业机组海量数据运动状态作业参数识别方法

姜汁水凝胶穴位贴敷对哮喘大鼠辅助性T细胞2细胞因子的调节作用

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中华中医药杂志 2024年第6期39卷 3068-3072页

作者：杨秋红卫弯田健材高慧董国启杨华元上海中医药大学上海201203 上海市虹口区江湾医院上海200080

目的:制备Fe_(3)O_(4)/N-异丙基丙烯酰胺(PNIPAM)新型穴位敷贴剂型,检测其性能,并应用于哮喘模型的穴位贴敷疗法,探讨该疗法对哮喘大鼠辅助性T细胞2细胞因子调节作用。方法:制备Fe_(3)O_(4)/PNIPAM复合水凝胶并测定升温性能,电镜下观察... 详细信息

目的:制备Fe_(3)O_(4)/N-异丙基丙烯酰胺(PNIPAM)新型穴位敷贴剂型,检测其性能,并应用于哮喘模型的穴位贴敷疗法,探讨该疗法对哮喘大鼠辅助性T细胞2细胞因子调节作用。方法:制备Fe_(3)O_(4)/PNIPAM复合水凝胶并测定升温性能,电镜下观察内部结构,检验细胞毒性。将32只SD大鼠随机分为4组,分别为正常组、模型组、激光姜汁组、激素组,每组8只。除正常组外,其余组制备哮喘模型,激光姜汁组姜汁水凝胶贴敷大椎穴5 min并808 nm激光照射控制药物释放;激素组采用地塞米松1.2 mg/kg腹腔注射;均为隔日1次。观察大鼠一般状态;ELESA检测支气管肺泡灌洗液(BALF)中免疫球蛋白E(IgE)、白介素(IL)-4、IL-13的表达;HE染色检测肺组织病理情况。结果:2.0 Fe_(3)O_(4)/PNIPAM具有疏松孔状结构,良好的吸热升温性能,且无细胞毒性。与模型组比较,激光姜汁组可显著改善哮喘大鼠的行为学评分(P<0.01);与模型组和激素组比较,激光姜汁组显著降低BALF中IgE的含量,降低IL-4、IL-13的表达(P<0.01,P<0.05)。结论:Fe_(3)O_(4)/PNIPAM无细胞毒性,具有良好的疏松孔状结构可负载药物,具有良好的吸热升温性能可控制药物释放,可作为新型穴位贴敷制剂。姜汁水凝胶穴位贴敷疗法可通过降低BALF中IgE、IL-4、IL-13的表达缓解哮喘的发作症状。

关键词： Fe_(3)O_(4) N-异丙基丙烯酰胺水凝胶哮喘穴位贴敷制剂姜汁