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血府逐瘀汤加减对冠心病模型大鼠主动脉形态斑块稳定性及细胞因子水平影响 被引量:4
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作者 刘晓伟 《四川中医》 2016年第4期45-48,共4页
目的:探析血府逐瘀汤加减对冠心病模型大鼠的主动脉形态、斑块稳定性以及细胞因子水平的影响。方法:40只SD大鼠,按照处理方式的不同,每组10只大鼠,随机分为:对照组、模型组、立普妥组以及血府逐瘀汤加减组。对照组使用普通饲料喂养,模... 目的:探析血府逐瘀汤加减对冠心病模型大鼠的主动脉形态、斑块稳定性以及细胞因子水平的影响。方法:40只SD大鼠,按照处理方式的不同,每组10只大鼠,随机分为:对照组、模型组、立普妥组以及血府逐瘀汤加减组。对照组使用普通饲料喂养,模型组采用高脂饲料喂养。立普妥组和血府逐瘀汤加减组在高脂饲料喂养的基础上,分别投喂立普妥和血府逐瘀汤加减。12周后,处死大鼠,对大鼠的主动脉形态和斑块稳定性进行镜下观察,并应用免疫组化方法对大鼠细胞因子相关指标进行检测分析。结果:光镜下观察病理切片标本显示,血府逐瘀汤加减组和立普妥组相比,主动脉内膜以及中膜厚度有较大减低。斑块稳定性方面,血府逐瘀汤组的结果优于立普妥组。相关细胞因子免疫组化检测指标方面,血府逐瘀汤组的免疫组化评分更理想。结论:和传统的治疗药物相比,血府逐瘀汤加减冠心病模型大鼠具有更为理想的改善其主动脉血管壁厚度、稳定粥样斑块及调节相关细胞因子的作用。 展开更多
关键词 血府逐瘀汤 冠状动脉粥样硬化 板块稳定性 细胞因子
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基于板块稳定程度的门式断裂稳压技术再生旧混凝土路面的关键技术研究
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作者 陆洲 《安徽建筑》 2013年第3期170-171,228,共3页
门式打裂稳压技术很好地解决了旧混凝土路面的再生问题,但由于现有水泥路面设计规范中的水泥路面再生处治标准比较粗略,使得该技术的应用存在技术缺陷。文章从打裂后的板块稳定性角度出发,提出了沉降量"趋于"稳定的概念,并提... 门式打裂稳压技术很好地解决了旧混凝土路面的再生问题,但由于现有水泥路面设计规范中的水泥路面再生处治标准比较粗略,使得该技术的应用存在技术缺陷。文章从打裂后的板块稳定性角度出发,提出了沉降量"趋于"稳定的概念,并提出弯沉作为稳定性控制指标之一,较好的弥补了打裂稳压技术目前的技术缺陷。 展开更多
关键词 水泥混凝土路面 打裂稳压 板块稳定性
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用甚长基线干涉测量(VLBI)数据导出的板块运动参数
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作者 孙付平 《测绘科学技术学报》 1994年第4期273-277,共5页
本文采用最近获得的VLBI基线变化率,解算了全球50个VLBI站的站速度。通过对VLBI台站构造稳定性的分析,用位于板块稳定地区台站的站速度求解了欧亚(EURA)、北美(NOAM)和太平洋(PCFC)三个主要板块之间... 本文采用最近获得的VLBI基线变化率,解算了全球50个VLBI站的站速度。通过对VLBI台站构造稳定性的分析,用位于板块稳定地区台站的站速度求解了欧亚(EURA)、北美(NOAM)和太平洋(PCFC)三个主要板块之间的相对运动欧拉矢量,这是完全基于VLBI数据导出的板块运动模型,称为VP-MM1。通过VPMM1与地学板块运动模型的比较,分析了板块运动的稳定性,得出了几点初步结论。 展开更多
关键词 VLBI 板块运动 板块运动稳定性
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Influence on the hydrodynamic performance of a variable vector propeller of different rules of pitch angle change 被引量:2
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作者 CHANG Xin ZOU Jing-xiang +1 位作者 HUANG Sheng GUO Chun-yu 《Journal of Marine Science and Application》 2007年第4期32-36,共5页
To design a more effective blade pitch adjustment mechanism,research was done on changes to the hydrodynamic characteristics of VVPs(Variable Vector Propeller) caused by different rules for changing pitch angle. A mat... To design a more effective blade pitch adjustment mechanism,research was done on changes to the hydrodynamic characteristics of VVPs(Variable Vector Propeller) caused by different rules for changing pitch angle. A mathematical method for predicting the hydrodynamic characteristics of a VVP under unsteady conditions is presented based on the panel method. Mathematical models for evaluation based on potential flow theory and the Green theorem are also presented. The hydrodynamic characteristics are numerically predicted. To avoid gaps between panels,hyperboloidal quadrilateral panels were used. The pressure Kutta condition on the trailing edge of the VVP blade was satisfied by the Newton-Raphson iterative procedure. The influence coefficients of the panels were calculated by Morino's analytical formulations to improve numerical calculation speed,and the method developed by Yanagizawa was used to eliminate the point singularity on derivation calculus while determining the velocities on propeller surfaces. The calculation results show that it's best for the hydrodynamic characteristics of the VVP that pitch angle changes follow the sine rule. 展开更多
关键词 variable vector propeller panel method UNSTEADY uneven in-flow distribution
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Stability analysis for main roof of roadway driving along next goaf 被引量:3
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作者 柏建彪 《Journal of Coal Science & Engineering(China)》 2003年第1期22-27,共6页
Focusing on the stability of surrounding rock around the roadway driving along next goaf with a narrow coal pillar, a mechanics model of the triangle block structure of main roof above the roadway is established, and ... Focusing on the stability of surrounding rock around the roadway driving along next goaf with a narrow coal pillar, a mechanics model of the triangle block structure of main roof above the roadway is established, and the sliding stability coefficient K 1 and the rotation stability coefficient K 2 are proposed to describe the stability of the triangle block structure quantitatively. The structure can keep a self stability before and after the roadway excavation, at the stage of mining induced effect, the stability of the structure is lowered, and the structure may become instability with decreasing the coal strength, increasing the mining height of working face and the mining depth. 展开更多
关键词 roadway driving along next goaf triangle block structure stability analysis
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