MTV的时尚特点

音乐电视（MTV）这种独具特色的综合艺术形式，在中国迅速发展，已成为各家电视台重要的音乐节目之一。音乐电视作品被大众所喜爱，接受，传唱，产生一定的影响，从音乐电视的产生，音乐电视作品的创作，音乐电视节目主持人的特殊作用等方面，对音乐电视传播中的求新，求变及时尚性特点进行了探讨。     

Abnormal expression of centrosome protein (centrin) in spermatozoa of male human infertility

To study the relations between male infertility and centrosome protein (centrin) and the functions of centrin in spermatogenesis, the matured spermatozoa of 10 normal male people and 18 male infertility patients were stained by immunofluorescence labeling antibody against centrin. The results showed that two fluorescence signal dots appeared in the normal male spermatozoa and were located at the base of flagellum. They are proximal centriole and distal centriole. However, in some spermatozoa of the male infertility, centrin protein was located abnormally at the base of flagellum and its staining signals were spread, the normal proximal and distal centrioles were confused and could not be recognized separately. These results suggest that abnormality of centrosome protein may be related to male infertility. This discovery may be used as a marker of abnormal sperm and male infertility.     

Study of transmembrane La3+ movement in rat ventricular myocytes by the patch-clamp technique

We have studied transmembrane La3+ movement in rat ventricular myocytes for the first time by using the whole-cell patch-clamp recording mode. La3+ (0.01-5.0 mmol/L) could not bring out inward currents through the L-type calcium channel in rat ventricular myocytes, while it could enter the cells by the same way carried by 1μmol/L ionomycin. When the outward Na+ concentration gradient is formed, La3+ can enter the cells via Na-Ca exchange, and the exchange currentsincrease with the increase of external La3+ concentrations. But compared with Na-Ca exchange currents in the same concentration, the former is only 14%-38% of the latter. The patch-clamp experiment indicates that La3+ normally can not enter ventricular myocytes through L-type calcium channel, but it can enter the cells via Na-Ca exchange.     

基于进化算法的拟可行方向法及其收敛性

在传统优化算法中嵌入一拟步骤 ,改善了算法的收敛性质 ;并用进化算法计算拟步骤 ,提高了算法的全局搜索能力 ,又不改变原算法的收敛性 .且研究了参数变化对算法的影响 ,并对算法进行了数值实现     

股骨头缺血性坏死的研究现状

分析了股骨头缺血性坏死的发病机制、CT诊断和临床治疗 ,提高了对本病的认识     

新型负膨胀系数材料ZrW2O8的合成与特性

ZrW2 O8 是新发现的由 0 3K至分解温度 1 0 5 0K都具有各向同性的负热膨胀化合物 ,但由于其分解温度和窄的热稳定范围反应合成相当困难 .本文综述了氧化物直接合成、微波合成和溶胶 -凝胶法制备ZrW2 O8以及单晶ZrW2 O8的生长方法 ,讨论了ZrW2 O8的特性 ,介绍了其负膨胀机理和潜在的应用     

零序导纳法馈线接地保护的研究

在数字馈线保护中，利用线路故障前后零测量导纳及其电导的特点，来判断馈线是否发生故障，具有较高的保护精度和可靠性，设计了RSL数字线路保护中的馈线接地保护功能。     

桥口油田注水难原因及增注措施选择

针对油田油层本身的地质因素 ,如孔隙喉道小、地层温度高、黏土含量少以及注入水水质条件的限制 ,逐渐形成了注水井注水压力高 ,注水量小等弊病 ,分析了注入水的水质及在油层部位形成Ca CO3 与堵塞物的情况 .在 5 0 - 3井中采取高能气体压裂与 PCT复合处理措施 ,总结了各种措施的效果 .结果表明 :采用高能气体在注水层部位形成多条径向裂孔等能更好地沟通水井与地层的联系 ,如 :PCT处理液把油层的黏土缩膨、扩大空隙度和渗透率 ,在生产中均为有效 .     

无界槽形区域上Boussinesq方程的整体吸引子

该文讨论了无界域上Boussinesq方程解的渐近行为，证明了在一定条件下，Boussinesq方程整体吸引子的存在笥及其整体吸引子具有有限的Hausdorff维数。作者将主要利用加权Sobolev空间的估计技巧讨论无界域上吸收集的紧性。     

探地雷达在高等级公路质量检测和管理中的应用

利用探地雷达检测原理探测高等级公路路基、路面质量状况，能获知新修公路路面结构层的厚度、介电常数和旧公路路基、路面的病害与缺陷发育情况等详细信息，从而为公路管理部门对公路质量评定和养护决策优化提供科技的依据。