LTE230-Based Power Wireless Private Network Applications and Implementation on Changdao

针对山东长岛特有的复杂海岛环境、交通不便、通信网络分散等问题,提出了建设LTE230系统的发展方案。通过对LTE230系统的优势特点进行分析,着重介绍了多个智能化的应用,该系统在智能电网中发挥了不可替代的作用,其良好的覆盖效果和通信能力可满足当地的应用需求。In Shandong province, targeting Changdao's unique complex island environment, traffi c inconvenience, and the dispersion issues of communication network, the paper proposed the construction LTE230 system development program. Through the analysis of the advantages of LTE230 system characteristics, the paper emphatically introduced multiple intelligent applications. The system played an irreplaceable role in smart grid, its good coverage and communication ability met the local application demand.烟台科技项目(5206051400K9

基于LTE230潍坊电力无线专网设计与实现

本文针对潍坊通信状况复杂、经费少等现状,结合智能电网配用电通信需求,通过建设LTE230系统,列举了LTE230系统的关键技术。着重分析它在用户信息采集中的应用效果,对比传统的通信网络,具有良好的覆盖效果和传输能力,为LTE230系统的广泛应用提供了良好的示范作用。潍坊科技项目（编号：5206041400TP

Adsorption of As (V) on Ce-Mn binary oxide: Behavior and mechanism

A novel Ce-Mn binary oxide adsorbent was synthesized via oxidation and co-precipitation method. As(V) adsorption behavior on Ce-Mn bimetal oxide was systematically investigated by batch experiments. As(V) adsorption mechanism was studied using FTIR and XPS techniques. The results indicated that the introduction of manganese oxides into CeO_2 emerged a synergistic effect on As(V) adsorption,which was evidently proved by the much higher adsorption capacity of Ce-Mn bimetal oxide than that of the pure CeO_2 and MnO_2,especially at the Ce/Mn molar ratio of 3 ∶ 1. The adsorption of As(V) was relatively fast and over 90.8% of the equilibrium adsorption capacity was obtained within 4 h. Ce-Mn bimetal oxide had good performance for As(V) adsorption,especially under acidic conditions. The maximum adsorption capacity was 77.8,63.5 and 39.0 mg·g~(-1) at pH 5.0,7.0 and 9.0,respectively. Freundlich model was more suitable to describe the adsorption isotherm data. The ionic strength had little influence on the adsorption. The coexisting anions PO_4~(3-) and SiO_2-3 inhibited As(V) adsorption,whereas the cations Ca~(2+) and Mg~(2+) slightly enhanced As(V) adsorption. Mechanism investigations suggested that As(V) was probably removed from the solution by forming monodentate mononuclear and didentate dinuclear complexes on the surface of Ce-Mn bimetal oxide