The Free Cesarian in the Health District of Bougouni

Purpose: The purpose of this study was to assess the impact of free caesarean section on maternal-fetal prognosis. Materials and Methods: This was a descriptive, cross-sectional, comparative analytical study of one year of non-free caesarean section and three years of free with retrospective data collection. Our study took place from January 1, 2004 to December 31, 2004 and from January 1, 2007 to December 31, 2009. Results: Caesarean section completion rates are 1.28%, 1.30%, 1.53%, 1.32% respectively in 2004, 2007, 2008, 2009. The average age was 27 years with extremes of 15 to 40 years. The peak of evacuations was recorded in 2007 with a rate of 89.4% and the peak of direct admissions in 2009 with a rate of 14.9%. An adequate means of transport was used in 77.20%. In 22.80% of cases an inadequate means was used. The indications of caesarean sections were dominated by preeclampsia 211/1045 caesarean section followed by acute fetal suffering 179/1045;86/1045;placenta previa 64/1045;presentations of the shoulder i.e. 53/1045;pre-rupture syndrome 44/1045;retro-placental hematoma 27/1045. In terms of maternal prognosis: we noted maternal deaths with a rate of 2.4%, 2.4%, 4.3%, 0.4% respectively in 2004, 2007, 2008, 2009. And stillbirth rates were 17.6%, 22.4%, 27.4%, 21.7% respectively in 2004, 2007, 2008, 2009. The average length of hospitalization was 10 days. Conclusion: Free caesarean section would be a factor in improving the maternal-fetal prognosis.

Should Search and Rescue Operations Be Free of Charge?

On April 3, 39 teachers and students from the Beijing Institute of Technology (BIT)were trapped on the MaoerMountain in Fangshan District,a suburban area in Beijing. Morethan 300 persons,

基于氯化物处理的钙钛矿自供电无电荷传输层光电探测器用于弱光检测

有机-无机卤化物钙钛矿因其可溶液加工和优异的光电特性而在光电探测器(PD)中得到了广泛应用.然而,基于钙钛矿的PD一般需要电荷传输层提供足够的分离和传输驱动力,这会增加钙钛矿PD的材料成本.本研究通过溶液法制备了基于苯基三甲基氯化铵(PTACl)处理的无电荷传输层钙钛矿自供电PD.以(CsFAMA)Pb(BrI)3作为光活性层,这种三元阳离子混合卤化物钙钛矿沉积后的垂直分布差异为电荷分离和传输提供了驱动力,PTACl处理能加强电荷分离和运输.这种PD在自供电模式下表现出优异的光电探测性能,其中光暗电流比为1.8×10^(5),响应度为198 mA W^(−1),探测率为1.48×10^(13)/1.24×10^(11) Jones(暗/噪声电流法计算).没有封装的PD在700 h的测试中也表现出良好的空气稳定性,且该PD对0.64 nW cm^(−2)的弱光仍有明显的响应,PD阵列也验证了这种弱光检测能力.本工作制备的钙钛矿自供电PD为弱光检测的发展提供了一种简单可行的途径.

Formation of free-charging industry alliance for new energy vehicles

At present, the further development of new energy vehicles industry is hindered by limited consumer's participation or capital investment. Therefore, a new multilateral model of cross-industry alliance needs to arise. The advanced charging technology of Internetdistributed mobile energy can link up with many market participants closely and form an effective and multilateral win-win cross-industry alliance. This new industry alliance can realize unexpected multiple goals, for example,(1)consumers who have purchased new energy vehicles can avail free charging;(2) potential vehicle buyers can be encouraged to use new energy vehicles;(3) the new energy vehicle manufacturers can expand their production scale;(4) the new energy vehicles sellers(4 S shop) can expand their sales volume;(5) large shopping malls can attain more income;(6) financial institutions can absorb more deposits;(7) governments can further promote low-carbon traffic. This article analyzes the cross-industry alliance and its forming mechanism.1)