本研究确定了某激光粉尘仪测试上海市环境大气颗粒物(PM10和PM2.5)的质量浓度转换系数K值。利用激光粉尘仪和TEOM RP 1400a型监测仪,同时对选定的环境监测站同一监测点的环境大气颗粒物(PM10和PM2.5)进行了测定,得出了该激光粉尘仪测试...本研究确定了某激光粉尘仪测试上海市环境大气颗粒物(PM10和PM2.5)的质量浓度转换系数K值。利用激光粉尘仪和TEOM RP 1400a型监测仪,同时对选定的环境监测站同一监测点的环境大气颗粒物(PM10和PM2.5)进行了测定,得出了该激光粉尘仪测试上海市环境大气颗粒物(PM10和PM2.5)的质量浓度转换系数K值呈基本正态分布,分别为0.00594和0.00158。展开更多
We compute the mass and temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient a2 〈 0 in anti-de Sitter space and perform the stability analysis of topological black holes. When k = -1...We compute the mass and temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient a2 〈 0 in anti-de Sitter space and perform the stability analysis of topological black holes. When k = -1, the third order Lovelock black holes are thermodynamically stable for the whole range r＋. When k = 1, we found that the black hole has an intermediate unstable phase for D = 7. In eight dimensional spacetimes, however, a new phase of thermodynamically unstable small black holes appears if the coefficient a is under a critical value. For D ≥ 9, black holes have similar the distributions of thermodynamically stable regions to the case where the coefficient ＆ is under a critical value for D = 8. It is worth to mention that all the thermodynamic and conserved quantities of the black holes with fiat horizon do not depend on the Loveloek coefficients and are the same as those of black holes in general gravity.展开更多
文摘本研究确定了某激光粉尘仪测试上海市环境大气颗粒物(PM10和PM2.5)的质量浓度转换系数K值。利用激光粉尘仪和TEOM RP 1400a型监测仪,同时对选定的环境监测站同一监测点的环境大气颗粒物(PM10和PM2.5)进行了测定,得出了该激光粉尘仪测试上海市环境大气颗粒物(PM10和PM2.5)的质量浓度转换系数K值呈基本正态分布,分别为0.00594和0.00158。
文摘We compute the mass and temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient a2 〈 0 in anti-de Sitter space and perform the stability analysis of topological black holes. When k = -1, the third order Lovelock black holes are thermodynamically stable for the whole range r＋. When k = 1, we found that the black hole has an intermediate unstable phase for D = 7. In eight dimensional spacetimes, however, a new phase of thermodynamically unstable small black holes appears if the coefficient a is under a critical value. For D ≥ 9, black holes have similar the distributions of thermodynamically stable regions to the case where the coefficient ＆ is under a critical value for D = 8. It is worth to mention that all the thermodynamic and conserved quantities of the black holes with fiat horizon do not depend on the Loveloek coefficients and are the same as those of black holes in general gravity.
