介绍了连续流双污泥亚硝化反硝化除磷系统的启动,主要研究了实验过程中COD、TP、NH4+-N在各个反应器中的浓度变化以及总去除效果,NO2--N、NO3--N的浓度变化规律,NO2--N在亚硝化池内的亚硝化率.COD在各反应池内都能被去除,TP主要在缺氧段被去除,NH4+-N主要在亚硝化段被去除,NO2--N、NO3--N的最大积累量分别为13.96、16.98 mg/L;当出水硝氮质量浓度达4.25 mg/L时,会破坏厌氧环境.

A method of patrolling transmission line by electric unpiloted aircraft was proposed in this paper,and the component parts of the system,the application and the advantage of the system were also mentioned.Finally overview of this technology was given.

在连续流双污泥亚硝化反硝化除磷系统缺氧池中取泥,筛选出5株聚磷菌,经生理生化鉴定属于4种菌属:肠杆菌属、葡萄球菌属、副球菌属和泛菌属。对4种聚磷菌分别进行厌氧释磷和缺氧吸磷试验以及PHB和异染颗粒染色。结果表明,4种聚磷菌均为亚硝化反硝化聚磷菌。葡萄球菌属、副球菌属、泛菌属和肠杆菌属的单位细胞吸磷质量依次减少。

Yongren is a county in Yunnan Province which needs to alleviate its poverty. From November 27, 2001 to Ju- ly 30, 2005, the government migrated 7561 persons of 1860 families to other places to help them get out of poverty. After migration, their living conditions have been greatly improved. However, their transitional poverty issues also have become striking. These include the poverty in economy, culture and psychology. Therefore, we need to help them solve such transitional problems in making sound policies, increasing migrants' channels of income, improving their quality, respecting their cultures and leading them to national amalgamation so that they can enjoy their stable life.

本文介绍了利用精益六西格玛提升电力系统继电保护管理的项目实施过程.在精益六西格玛项目的实施过程中,利用六西格玛分析工具研究了继电保护缺陷处理效率的影响因素,确定了继电保护备品备件管理作为改善对象.在改善行动阶段,借助供应链管理相关理论确定了备品备件储备策略,通过一系列措施的实施,取得了明显的效果.利用精益六西格玛提升管理水平的方法也值得在电力企业中推广.

The study focuses on the dissolved horizontal groove around the stone pillars higher than 5 m in Yunnan Stone Forest.The height,width,elevation,latitude and longitude of the stone pillars at different topography sites and different elevation are measured.Further on,the number of layers of the soil moisture dissolved groove and the height of each layer to ground surface are metered.The statistics shows that the grooves are divided into two kinds,water eroded and soil moisture dissolved grooves,according their formation.The length of water eroded grooves are longer,about 1.77 m in average,but the soil moisture dissolved ones are shorter,about 1.33 m in average.The depth of water eroded grooves are deeper,about 0.45 m in average,than the soil moisture dissolved ones(about 0.40 m in average).The average width of water eroded grooves is about 0.25 m,and that of soil moisture dissolved is wider,about 1.13 m.The average height of the stone pillar is 12.53 m with the height of the stone pillars being 14.0 m at the bottom of the depression,12.3 m on the slope and 11.3 m on the hill-top dividedly.There are 4.95 layers of groove in average totally,but 5.0 layers at the bottom of the depression,4.9 layers on the slope and 4.7 layers on the hill top dividedly.The height of the one to three levels' grooves to the ground is 2.00 m,4.09 m and 6.20 m dividedly.Upon inspection,there is significant difference in width between the two different genetic types of grooves.The length,width and depth of soil moisture dissolved groove decrease with elevation,but that of water eroded groove have nothing to do with elevation.There are no obvious differences in the height,number of layers and altitude in the grooves at different topography sites,proving that there was neither strong folding movement nor tilting uplift-falling movement but consistent geologic structure conditions during the formation of the stone forest that leading to uniform karstification.

As the optical fiber communication with a large capacity,high-quality transmission of information,transmission distance,stable performance,anti-electromagnetic interference,corrosion resistance,etc.,they has been widely used in recent years in the power system.Power system reliability of optical fiber transmission network is an important guarantee for electricity production safety,high efficiency and stable operation.However,in practical applications,due to the quality of fiber optic cable itself,and many other factors,fiber optic cable is easy to be damaged thus affecting the transmission quality of fiber optic cable.The traditional way of line maintenance with labor and instrument has been unable to meet the requirements of power system in the fiber optic cable transmission performance analysis and automated management and maintenance.This paper describes the use optical automatic monitoring system which combining of OTDR testing technology with GIS mapping technology combining in the OPGW cable maintenance solution in 500kV lines of Beijing EHV Company.

The reasons for the troubles in found the regenerator of a C-glass fiber furnace such as blocked gas flow, increased pressure and decreased hot efficiency were analyzed, and corresponding hot repair measures were adopted. Through the hot repair, some successful experiences have been summarized while some shortcomings found for improvement.

In this article,test about the permeability of recycled fine aggregate concrete is carried out according as the standard test method of ASTM C1202.The results show that particle-reshaped recycled fine aggregate concrete is less permeable than the simple shaped one.The penetation decreases as the replacement rate increases.the dielectric flux can decrease by 36.1% when fly ash is added to 30%.It can decease 27.6% whenever the binder material content increases 100kg/m3.The recycled fine aggregate concrete has an acceptable impermeability referring to chloride ion.

Many methods have been used in data mining, Bayesian networks become a focus currently. It is a powerful tool and can be used to do uncertain inference. When used in conjunction with statistical techniques, Bayesian networks have several advantages for data modeling.This paper mainly discusses the definition of Bayesian networks, the advantages of the methods and the algorithms of learning networks. An instance is presented to indicate the applications in data mining technology finally. Bayesian networks can mine the hidden information and inherent hypostasis, and have many advantages such as the ability of favorable forecast. The experimentation proves its practicality and availability.

The present research investigated the quality of both the simple-crushing and the particle-shaping recycled fine aggregate concrete.It put importances on the influences on the concrete by the types of the recycled fine aggregate,the replacement ratio,the volume of the fly ash and the binder.The result indicated that the quality of the simple-crushing concrete was lower than the normal concrete,and decreased with the increasing of the replacement,the quality of the particle-shaping concrete was higher than the normal concrete,and increased with the replacement.The strength of recycled fine aggregate decreased with the addition of fly ash.Furthermore,its early age strength decreased with the total binder content,and the influence on its strength by fly ash was slighter with its age.Consequently,simple-crushing recycled fine aggregate are able to make C25-C50 concrete and particle-shaping aggregated are utilized to make concrete with the strength grade between C35 and C60.

The particle shaping strengthen techniques of recycle coarse aggregate are expounded,as well as differences among the characteristics of the simple crushing recycled coarse aggregate and particle shaping recycled coarse aggregate.The percentages of recycled aggregate 0,40%,70% and 100%,the influence of different percentages coarse aggregate on the concrete workability are researched.The result shows that,on the same percentage,the quantity of water of the simply crushing recycled coarse aggregate concrete is high and its workability is poor.The quantity of water of particle shaping recycled coarse aggregate concrete is lower than the simply crushing one,and its workability is well.Along with increasing the percentages of recycled aggregate,the workability of simply crushing recycled coarse aggregate concrete are worse,the quantity of water are higher and the quantity of water of particle shaping recycled coarse aggregate concrete are increased a little,the workability is similar to the nature coarse concrete.

Through the comparison between the results of titration in standard substance and C-glass batch using bromocresol green -methyl red indicator and methyl orange indicator separately,it was demonstrated that the methyl orange indicator formerly used for determining soda ash in glass batch could be changed to bromocresol green-methyl red indicator,and this could increase the accuracy and precision of the test.