Global Existence of Smooth Solutions of Compressible Bipolar Euler-Maxwell Equations

The bipolar compressible Euler-Maxwell equations as a fluid dynamic model arising from plasma physics to describe the dynamics of the compressible electrons and ions is investigated. This work is concerned with three-dimensional Euler-Maxwell equations with smooth periodic solutions. With the help of the symmetry operator techniques and energy method, the global smooth solution with small amplitude is constructed around a constant equilibrium solution with asymptotic stability property.

宽胸气雾剂联合常规疗法治疗寒凝血瘀型冠心病稳定性心绞痛随机对照研究

目的观察宽胸气雾剂治疗寒凝血瘀型冠心病稳定性心绞痛的临床疗效。方法110例寒凝血瘀型冠心病心绞痛患者随机分为研究组和对照组各55例。其中对照组患者采用西医常规治疗,研究组在对照组基础上加用宽胸气雾剂治疗,治疗4周。比较两组治疗前后中医证候积分、心电图改善、每周心绞痛发作频次及持续时间、西雅图量表评分、血清一氧化氮(NO)、内皮素1(ET-1)、血管内皮生长因子(VEGF)水平。结果研究组中医证候疗效及心电图有效率(90.90%、69.09%)高于对照组(72.72%,49.09%,P=0.013,P=0.032)。与本组治疗前比较,两组治疗后心绞痛发作频次和持续时间及ET-1水平下降(P<0.05,P<0.01),西雅图量表评分及NO、VEGF水平增加(P<0.05,P<0.01)。与对照组同期比较,治疗组治疗后心绞痛发作频次和持续时间及ET-1水平下降(P<0.05,P<0.01),西雅图量表评分及NO、VEGF水平增加(P<0.05,P<0.01)。两组患者未见明显不良反应。结论宽胸气雾剂治疗冠心病稳定性心绞痛,可显著改善患者心电图缺血改变,减少心绞痛发作次数及持续时间,改善患者血管内皮功能。