Dilated coronary sinus in prenatal echocardiography; identification,associations and outcome

The dilated coronary sinus (DCS) has only recently been clearly visualised in the fetus due to progress in prenatal echography. This is a retrospective study of 22 fetuses presenting with DCS revealed by prenatal echography. We report the circumstances leading to the detection of a DCS and the neonatal outcome of these fetuses. The coronary sinus was defined as dilated depending on its visualisation in cross-section from the ‘4 chamber’ view, as well as a pseudo inter-atrial septal defect from a more posterior view. In each case the gestational age, circumstances of detection, associated anomalies and postnatal outcome are reported. The circumstances were: evaluation of a clearly identified DCS in four cases and during detailed fetal echocardiography because of suspected congenital heart disease in 18 cases. Five cases were associated with a cardiac anomaly, three with an extracardiac anomaly, six with both cardiac and extracardiac anomaly and eight were isolated. Postnatal outcome was related to the associated anomaly. In conclusion, it is important that the echography image be correctly interpreted, as a DCS often implies possible associated defects and therefore affects prognosis. When not associated with other anomalies this condition is not considered serious. Copyright © 2002 John Wiley & Sons, Ltd.     

"九五"期间昆明市盘龙区酸雨状况分析

本文通过对盘龙区‘‘九五"期间降水监测结果进行评价,得出昆明市中心区酸雨的变化趋势,并加以分析,提出对策建议.     

Mann-Kendall检验及其在河流悬沙浓度时间序列分析中的运用

探讨了Mann-Kendall非参数秩次相关检验在时间序列分析方面的应用,并以云南省文山州盘龙河为例,把它运用到河流悬沙浓度时间序列的趋势分析和突变分析研究中。结果表明：①M-K检验同样适用于河流悬沙浓度的趋势与突变分析;②盘龙河自20世纪60年代初至90年代末河流悬沙浓度一直表现为波动上升趋势,1999年后有下降的迹象;③盘龙河的河流悬沙浓度自20世纪60年代以来存在着两个明显的突变点,其一在1973年,其二在1999年。     

盘龙河流域空间信息分析

利用2008年SPOT卫星影像结合野外调查,运用3S技术对盘龙河流域的植被、土地利用和环境质量情况进行调查。结果表明,流域内的土地资源内部结构不合理,与自然环境不协调,其环境质量以中等偏上为主,差的质量面积较大。提出了对盘龙河流域加强法制建设,提高森林覆盖率,做好土地利用总体规划,优化农业产业结构的生态保护对策建议。     

盘龙江城区段氮磷变化及环境管理对策

盘龙江流经市区段污染严重,水质常年监测为劣Ⅴ类。经多年治理,水质有所好转。在目前污染治理的基础上,要进一步改善盘龙江水质,需要在污染治理上挖掘潜力。     

盘龙江上段截污工程社会效益和生态系统服务价值评估

通过背景资料收集、问卷调查、条件价值评估等方法,对昆明市盘龙江上段截污工程的社会效益进行了评估,估算了环境整治后盘龙江上段的生态系统服务价值。研究结果表明：昆明市盘龙江上段综合整治具有良好的社会效益,体现出较高的生态系统服务价值。