超高层建筑电气相关问题的探讨

通过对超高层建筑的调研,结合多部国内新出的通用规范和美国消防协会NFPA标准等,从业态、单位指标、负荷等级、应急电源、供电计量、消防报警等多方面展开分析,并对标准中的矛盾和不明确之处提出建议图示,供给同行参考和探讨。

改造项目的电气设计分析

研究了改造项目电气特点。结合改造项目分类及规范使用原则,通过案例分析,在机电改造流程、踏勘研究、业态变化、容量分析、改造方式、设备利旧、应急照明、消防报警及智能化等方面,提供了措施和经验。

The Material Source of a New Type of Copper Deposits-Evidence from Stable Isotopes

The new type of copper deposits concerned with in this paper are vein copperdeposits found in the Lanping-Simao Rift Basin, Yunnan, China. As is indicated by H,O, C, S, Pb and Sr isotopes, water and mineralisers in the ore-forming fluids were derivedfrom heated meteoric waer and mantle, respectively. The metallic elements (Cu, Ag, Pb,Zn, As, Sb, Fe, REE, etc.) are characterised by a mised source from the crust and themantle.