Photothermal effect for Fe3O4 nanoparticles contained in micelles induced by near-infrared light

Near infrared (NIR) light induced photothermal effect for Fe₃O₄ nanoparticles, contained in Pluronic F127 micelles, has been studied and it exhibits high photothermal converting efficiency. Heat is found to be rapidly generated in micelles containing Fe₃O₄ nanoparticles by NIR laser irradiation. Upon irradiation at 808 nm light and with mass concentration of Fe₃O₄ nanoparticles in 4 g/L, the micelle temperature increase is higher than 34°C for 10min irradiation. The maximum temperature of micelles containing Fe₃O₄ nanoparticles in 4 g/L reaches 62°C.     

南疆铁路盐渍土路基高压喷射注浆法应用研究

分析了高压喷射注浆法在盐渍土路基中的应用,总结了其施工材料、施工配比以及施工流程.根据处理后沉降观测资料分析可知,高压喷射注浆法对处理盐渍土路基病害是可行的.     

青藏铁路不冻泉特大桥桩基施工措施与经验总结

主要介绍青藏铁路不冻泉特大桥桩基施工的机具选择、施工措施与施工方法,在此基础上对冻土地区桥梁桩基的施工进行了经验总结。     

南疆铁路库喀段盐渍土病害形成机理分析

南疆地区盐渍土对南疆铁路行车安全影响较大。。论文研究指出南疆地区盐渍土的形成主要是受南疆地区气候条件、地貌条件、水文地质条件和地层岩性条件控制。而盐渍土的迁移和聚集则主要与地下水、地表水、植物生长和人类活动等积盐作用有关。