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不同极压抗磨剂在磨损条件下的膜特征

润滑与密封 1998年第3期23卷 21-23页

作者：徐敏空军油料研究所北京100076

本文选择了磷酸三甲酚酯(TCP)、硫代磷酸三苯酯(TPPT)和2—巯苯并噻唑(MBT)三种酯类润滑油常用的极压抗磨剂进行四球磨损试验,并用俄歇电子能谱(AFS)对磨损试验后得到的磨斑进行表面膜的表层和深层剥离分析,试验发现磨斑上的表面膜的组... 详细信息

本文选择了磷酸三甲酚酯(TCP)、硫代磷酸三苯酯(TPPT)和2—巯苯并噻唑(MBT)三种酯类润滑油常用的极压抗磨剂进行四球磨损试验,并用俄歇电子能谱(AFS)对磨损试验后得到的磨斑进行表面膜的表层和深层剥离分析,试验发现磨斑上的表面膜的组成和厚度与四球试验得到的润滑性能有良好的对应关系。

关键词： TCP 酯类油膜分析抗磨剂磨损润滑油航空

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材料表面与实用表面分析进展

材料保护 1992年第2期25卷 17-20页

作者：孟锡明魏其谋吕忠洲付君武机电部武汉材料保护研究所 430030

表面是晶态固体原子在三维空间周期排列的终止处,它不同于体内环境。具有独特的局域化电子态和振动态。材料的许多性质与表面和界面状态有着密切的联系。从原子或分子级水平来研究表面的现代表面分析技术,是由能取得纳米(nm)级表面信息... 详细信息

表面是晶态固体原子在三维空间周期排列的终止处,它不同于体内环境。具有独特的局域化电子态和振动态。材料的许多性质与表面和界面状态有着密切的联系。从原子或分子级水平来研究表面的现代表面分析技术,是由能取得纳米(nm)级表面信息的能力来表征的。文中对四种实用表面分析技术,即AES、XPS、ISS和SIMS的进展作了综合性述评。综合表现在灵敏度、分辨率、数据采集和处理以及稳定性等方面的大幅度提高。但实验室间的数据比较表明,标准方法,校正步骤和数据库的建立仍是当务之急。

关键词：材料表面分析膜分析

Choroidal Analysis of Polypoidal Choroidal Vasculopathy by Spectral Domain Optical Coherence Tomography

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Eye Science 2014年第1期29卷 20-24页

作者： Chunyi Wei Ran Liu Jiaqing Li Yu Yang Xiaoyan Ding State Key Laboratory of Ophthalmology Zhongshan Ophthalmic Center Sun Yat-sen University

Purpose: This study was designed to measure the changes in the subfoveal choroidal thickness(SFCT) and choroidal maximal vessel diameter(MVD) of the affected and unaffected fellow eyes in patients with polypoidal choroidal vasculopathy(PCV) and compare them to healthy ***: In this cross-sectional observational clinical study,SFCT and MVD were measured in both eyes of 53 patients with unilateral PCV. PCV eyes were subgrouped into group A and unaffected fellow eyes into group B. All patients were diagnosed with PCV by fundus fluorescein angiography.(FFA)and indocyanine green angiography.(ICGA). Sixty age- and gender-matched healthy subjects were enrolled in the control group(group C).Results: No statistical difference was observed among groups in age and gender. Overall, SFCT was correlated with MVD in all subjects(P <0.001; correlation coefficient: 0.759). P values were < 0.001 with a correlation coefficient of 0.686,0.801, and 0.808 in groups A, B, and C, respectively. No statistical significance was noted in SFCT among groups A(266.45±99.51 μm),B(269.57 ± 105.10 μm),and C(243.83±99.68 μm)(P =0.335). However, the MVD in group A was(202.55±72.45 μm), significantly larger than that in group C(166.45 ±56.18 μm,P =0.008), while the MVD in group B(194.75±85.27 μm) was equally significantly greater than that in group C(166.45 ± 56.18 μm)(P=0.038).Conclusion: For both PCV patients and healthy subjects,SFCT was positively correlated with MVD. No statistical significance was noted in SFCT between PCV eyes and unaffected fellow / normal eyes. However, MVD was significantly larger in the PCV affected eyes than in unaffected fellow or normal control eyes, suggesting that MVD could be considered as a sensitive indicator to evaluate choroidal perfusion in PCV patients.

关键词：血管病变脉络膜断层扫描光学相干膜分析频域肉 PCV

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肾脏内科门诊水肿患者500例病因分析

中国社区医师（医学专业） 2009年第23期11卷 74-74页

作者：安军民张莉陕西西安市第四医院肾内科 710004

目的:总结肾内科门诊水肿患者的病因特点。方法:对500例水肿患者行各种检查,监测体重变化,结合病史、症状、体征进行分析总结。结果:500例水肿患者中,其中心源性水肿48例;肾源性水肿89例;肝源性水肿28例;营养不良性水肿13例;黏液性水肿8... 详细信息

目的:总结肾内科门诊水肿患者的病因特点。方法:对500例水肿患者行各种检查,监测体重变化,结合病史、症状、体征进行分析总结。结果:500例水肿患者中,其中心源性水肿48例;肾源性水肿89例;肝源性水肿28例;营养不良性水肿13例;黏液性水肿84例;经前期紧张综合征水肿63例;药物性水肿36例;特发性水肿108例;肢体血栓形成致血栓性静脉炎水肿14例;局部炎症性水肿7例;创伤性水肿4例;过敏性水肿6例。结论:肾脏内科就诊的水肿患者前五位为特发性水肿、肾源性水肿、黏液性水肿、经前期紧张综合征水肿、心源性水肿。

关键词：水肿病因膜分析