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Typical working conditions and application scenes of backup batteries for communication base station in China are analyzed in this article. And the mathematical model is established for economic analysis of the application of second-use of electric vehicle batteries in backup power for Chinese communication base station. The cost savings ratio in different remaining cycle life of second-use electric...
Recently there has been rapid development of large-span and shallow-buried highway tunnel construction and considerable risk appear, the urgent issues are that how to identify effectively risk factors which in the process of tunnel construction. With the review of disadvantages of risk recognition methods, the risk hierarchical structure for construction of the tunnel was established using the Analytic...
It was very careful that the spatial structure and form of the historical town, which the spatial structure of the environment landscape of the exterior and inner, contain order. That human is an integral part of nature is matching layout principle. The landscape space layer of the historical town is obvious, and historic time and historic space are clear. The design principle of the whole landscape...
Driven by considerable technological development such as digitalization of information and the coming together of ICT, network convergence has emerged as an important phenomenon globally. In China, recent policies about the convergence of Telecom, Broadcasting and Internet networks has produced a timeframe to speed up the three-network convergence and has shown Government's determination to remove...
This paper briefly reports the research and the applications of some newly piezoelectric ceramics (i. e. F1-PZT, F2-PZT, FD3-PZT, FD4-PZT, SF-PZT, S-PZT, and lead-free piezoelectric ceramic materials (Bi0.5Na0.5)0.94Ba0.06TiO3, etc.) of ferro/piezoelectric community by means of bettering the steps of their fabricating techniques, especially the step of grinding the superfine powder of raw materials...
The demand for effective and inexpensive sorbents is increasing in response to the widespread recognition of the deleterious health effects of heavy metals exposure through aqueous solutions. An adsorbent, bio-formulation (BF), was prepared by agricultural waste. The maximal biosorption removal of cadmium (II), lead(II), copper(II), zinc(II) on BF are 99.4, 99.8, 97.6, 98.3% at pH 8, 5, 5, 7, respectively...
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