Team 10是20世纪50年代之后活跃在西方建筑界的组织,它的主张曾对西方建筑和城市思想产生过比较深远的影响,近年来也逐渐为中国设计界所关注。本文希望对Team 10活跃时期和同时期岭南建筑界的创作活动进行考察,并通过这一历史现象来探...Team 10是20世纪50年代之后活跃在西方建筑界的组织,它的主张曾对西方建筑和城市思想产生过比较深远的影响,近年来也逐渐为中国设计界所关注。本文希望对Team 10活跃时期和同时期岭南建筑界的创作活动进行考察,并通过这一历史现象来探讨不同时空上设计观念的悬隔以及对于今日建筑思想理论和设计实践的启示。展开更多
Crystallization behavior of amorphous Zr 70 Cu 20 Ni 10 alloy isothermally annealed at 380 ℃ was first investigated by employing the differential scanning calorimetry (DSC) and transmission electron microscopy (TEM)....Crystallization behavior of amorphous Zr 70 Cu 20 Ni 10 alloy isothermally annealed at 380 ℃ was first investigated by employing the differential scanning calorimetry (DSC) and transmission electron microscopy (TEM). It has been found that an exothermic peak appears in the DSC trace when the annealing time is about 17～18 min, indicating a certain phase transformation occurs in the matrix of amorphous Zr 70 Cu 20 Ni 10 alloy. Meanwhile, isothermal annealing experiments for amorphous Zr 70 Cu 20 Ni 10 alloy ranging from 360 ℃ to 400 ℃ with a temperature interval of 10 ℃ were also carried out, from which no exothermic reaction can be observed except for the case of 380 ℃. This behavior indicates that the phase transformation during isothermal annealing of amorphous Zr 70 Cu 20 Ni 10 alloy is strongly temperature and time dependent. Further investigations are required to reveal the nature of such phenomenon.展开更多
污泥预处理方法包括机械法、化学法和生物法,选择上述方法中具有代表性的超声波20 k Hz、p H 10和厌氧70℃分别预处理污泥,从有机物释放情况和经济性评价不同预处理方法.结果表明,污泥经过预处理后,液相中有机物释放量均增多,但经过p H...污泥预处理方法包括机械法、化学法和生物法,选择上述方法中具有代表性的超声波20 k Hz、p H 10和厌氧70℃分别预处理污泥,从有机物释放情况和经济性评价不同预处理方法.结果表明,污泥经过预处理后,液相中有机物释放量均增多,但经过p H 10和厌氧70℃预处理后能释放更多的有机物,反应结束时其总溶解性蛋白质和多糖由预处理前的418.9mg·L^-1(以COD计,下同)分别增加到7 516.0 mg·L^-1和7 892.5 mg·L^-1,DNA浓度由预处理前的18.1 mg·L^-1依次增加到1 343.3 mg·L^-1和1 766.1 mg·L^-1;通过流式细胞术鉴定细胞形态得出预处理结束时污泥细胞死亡率从高到低为61.6%(p H10)、59.9%(厌氧70℃)和34.5%(超声波20 k Hz),相比预处理前分别提高45.6%、43.9%和18.5%;预处理结束时污泥有机物去除率依次为19.1%(p H 10)、13.8%(厌氧70℃)和7.6%(超声波20 k Hz);单位体积污泥经p H 10预处理比超声-20kHz和厌氧70℃分别多节约28.5%和124.1%.基于本研究中污泥有机物释放量和经济性,污泥预处理方法宜选择化学法(p H 10).展开更多
文摘Crystallization behavior of amorphous Zr 70 Cu 20 Ni 10 alloy isothermally annealed at 380 ℃ was first investigated by employing the differential scanning calorimetry (DSC) and transmission electron microscopy (TEM). It has been found that an exothermic peak appears in the DSC trace when the annealing time is about 17～18 min, indicating a certain phase transformation occurs in the matrix of amorphous Zr 70 Cu 20 Ni 10 alloy. Meanwhile, isothermal annealing experiments for amorphous Zr 70 Cu 20 Ni 10 alloy ranging from 360 ℃ to 400 ℃ with a temperature interval of 10 ℃ were also carried out, from which no exothermic reaction can be observed except for the case of 380 ℃. This behavior indicates that the phase transformation during isothermal annealing of amorphous Zr 70 Cu 20 Ni 10 alloy is strongly temperature and time dependent. Further investigations are required to reveal the nature of such phenomenon.
文摘污泥预处理方法包括机械法、化学法和生物法,选择上述方法中具有代表性的超声波20 k Hz、p H 10和厌氧70℃分别预处理污泥,从有机物释放情况和经济性评价不同预处理方法.结果表明,污泥经过预处理后,液相中有机物释放量均增多,但经过p H 10和厌氧70℃预处理后能释放更多的有机物,反应结束时其总溶解性蛋白质和多糖由预处理前的418.9mg·L^-1(以COD计,下同)分别增加到7 516.0 mg·L^-1和7 892.5 mg·L^-1,DNA浓度由预处理前的18.1 mg·L^-1依次增加到1 343.3 mg·L^-1和1 766.1 mg·L^-1;通过流式细胞术鉴定细胞形态得出预处理结束时污泥细胞死亡率从高到低为61.6%(p H10)、59.9%(厌氧70℃)和34.5%(超声波20 k Hz),相比预处理前分别提高45.6%、43.9%和18.5%;预处理结束时污泥有机物去除率依次为19.1%(p H 10)、13.8%(厌氧70℃)和7.6%(超声波20 k Hz);单位体积污泥经p H 10预处理比超声-20kHz和厌氧70℃分别多节约28.5%和124.1%.基于本研究中污泥有机物释放量和经济性,污泥预处理方法宜选择化学法(p H 10).
