Detecting Aerosols over Land from Satellites by Measuring Far IR Radiation from the Earth-Atmospheric System

In this study, a special method is proposed for detecting aerosols over land by analyzing satellitemeasured far IR radiation at three channels, 8.7, 11.5, and 12.5 lain. Sensitivity tests revealed that the behavioral features of radiative brightness temperatures （BTs） at these three channels with increasing optical depth are different among different types of aerosols. Analyzing how BTs and their differences, xBT （BT11.5-BT12.5） and YBT （BT8.7-BT11.5）, behave with varying optical depth can help to qualitatively distinguish among aerosols and semi-quantitatively estimate their optical thicknesses. In addition, the authors found that the vertical density profile of aerosols has little impact on this method.

辨证论治应用芪苈强心胶囊对缺血性心力衰竭疗效影响的Meta分析比较

电子文献检索中国知网、万方、中国生物医学文献数据库(CBM)、维普、PubMed、Cochrane Library。检索关键词筛选符合条件的研究,根据量表评价文献质量,应用Rev Man 5.3软件进行Meta分析、亚组分析,应用Stata 12.0软件进行Meta回归,经上述方法系统性评价芪苈强心胶囊治疗缺血性心力衰竭在有无辨证用药2种情况下疗效区别。共纳入22项研究,共计1942例患者,文献质量偏低。Meta分析结果显示:与单纯使用西药常规治疗相比,西药常规治疗加用芪苈强心胶囊,能提高缺血性心力衰竭的临床疗效(RR=1.21,95%CI[1.16,1.27],P<0.00001),且辨证用药组的合并效应量大于无辨证组(P=0.03,I2=78.9%),Meta回归结果(sig=0.9,P=0.057);左室射血分数(WMD=7.28,95%CI[5.18,9.38],P<0.00001),且辨证用药组的合并效应量大于无辨证组(P=0.01,I2=83.2%),Meta回归结果(I2=81.09%,R2=29.08%,sig=0.47,P=0.029);6 min步行试验(WMD=33.20,95%CI[24.70,41.70],P<0.00001);左室舒张末期内径(WMD=-4.61,95%CI[-5.38,-3.84],P<0.00001);左室舒张末期容积(WMD=-34.43,95%CI[-38.81,-30.05],P<0.00001);左室收缩末期容积(WMD=-9.60,95%CI[-13.16,-6.05],P<0.00001);芪苈强心胶囊组描述11例不良反应,对照组描述20例不良反应,均可耐受,未发现有明显肝肾功能异常。缺血性心力衰竭患者应用芪苈强心胶囊安全有效,较单纯常规治疗可进一步提高临床疗效。结合辨证论治应用芪苈强心胶囊疗效较不辨证用药更显著,提示临床用药辨证施治疗效更佳。上述结论仍需建立在更多高质量、大样本量的文献基础上加以论证。