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A biosorbent was prepared by treating the persimmon (Diospyros kaki Thunb.) fallen leaves with sodium hydroxide (NaOH). The NaOH concentration and stirring period for the preparation of the biosorbent were adjusted to optimise the Cd(I) adsorption capacity of the biosorbents. Removal of highly toxic Cadmium metal ions from water system using the optimal biosorbent named ‘NPFL’ was investigated using a mimic industrial column. The result showed that NPFL could remove Cd(II) in large quantities from aqueous solution with coexisting metal ions. The raw material, NPFL and Cd(II) loaded NPFL were characterized by SEM-EDS. The reusability of NPFL was also studied by batch adsorption-desorption test.

The Dongzhongla Pb-Zn deposit, a newly-discovered medium-sized deposit, is located in the north margin of the eastern Gangdese, central Lhasa block. Based on the analysis of the ore-forming geological conditions in this deposit, sulfur isotope of this deposit were analyzed, and S isotopic equilibrium temperature of mineral pairs (sphalerite and galena) were calculated. This study has shown that the sulfur isotopic equilibrium temperature of sphalerite and galena in Dongzhongla Pb-Zn deposit ranged from 185℃ to 296℃. It indicated that the equilibrium temperature decreased gradually from the skarn stage to sulfide stage. The equilibrium temperature can be used as the reference of metallogenic temperature for Dongzhongla Pb-Zn deposit. DongzhongLa deposit is the typical type of skarn Lead-zinc deposit. East of the Dongzhongla mining area is the priority exploration area.

The high salinity coking wastewater is a poor biodegradability, extremely complex composition and refractory industrial wastewater after biochemical treatment, which is difficult to achieve reuse standards by conventional processing method. A coking plant used advanced treatment (micro-electrolysis, Fenton) and desalination (electrodialysis, ultrafiltration, reverse osmosis) to treat coking wastewater after biochemical treatment. The effluent quality achieved stability and better than the required quality indicators of reclaimed water of “Code for design of industrial recirculation cooling water treatment” (GB50050-2007). The concentrated water was sent to mining company to comprehensive utilization, which achieved near zero emissions.

The feature of deception jamming for GNSS-dot networks is researched and analyzed, and it is difficult to accurately locate and correct the interference position by using the interference detection methods of the traditional WSN, a new attack detection algorithm that based on an improved angle of arrival (AOA) positioning mechanism to determine the point of disruption and interference correction is proposed. Nextly the algorithm of a single interference source localization based on the hyperbolic method by using anti-jamming principle of the GNSS is researched and given, and can locate both single and multiple interference sources. Then the indicators and methods of performance evaluation for the GNSS-dot networks are proposed. Finally, Experiment based on the algorithm is realized, and the attack detection and correction is very efficient, and interference location under ideal conditions is higher efficiency, and the strategies of anti deception jamming are also identified.

Human-water relationship evaluation method based on cloud model is put forward to cope with the vagueness in evaluation language. With the intensive study of the specialty in human-water relationship in Northwest China arid area, three dimensions related to human-water relationship, natural water cycle’s health degree (NWHD), Social water cycle’s rationality degree (SWRD) and human-to-water fitness degree (HWFD) are selected to describe the harmony degree between water system and human system. The limit of evaluation index subordinate to each dimension corresponding to every harmony level is determined, and thus we can generate a comprehensive cloud model with evaluation index harmony level. When numeric values substitute for basic evaluation indexes, combined with the weights calculated from entropy weight method and AHP method, we get the certainty distributions of dimension indexes and integration objects among each harmony level. Case shows that human-water relationship evaluation method based on cloud model can effectively solve the vagueness and uncertainty in evaluation language. The evaluation results reflect the harmony degree in Northwest China arid area precisely.

Increasing population and urbanization pose more and more threats to urban river. Integrated Water Resources Management (IWRM) is possible framework to solve water resource management problems through cross-sectional cooperation, but the vagueness in this concept make its application difficult. This paper focuses on urban river management practices in China and classified the government-guided cross-sectional urban river management projects to a special pattern of IWRM (GIWRM). It is proved to be effective in synthesizing efforts of different government departments, industry and the public and improve the urban river conditions a lot.

For the purpose of extracting the information of ice shelves, the statistical analysis of TM, ETM+ and Landsat8 OLI imagery of the typical area at the southwest corner of Wilkins Ice Shelf is conducted. Basic statistics of single bands were extracted and the correlation coefficients, joint entropy as well as the Optimum Index Factor among multiple bands were calculated. The results of experiments as well as the characteristics of spectrum characteristics of the surface features were taken into consideration comprehensively and the optional bands combinations were investigated. Results show that for TM and ETM + imagery, the combination of band 2, 3 and 4 is the optional bands combination. For L8 OLI imagery, the combination of band 3, 4 and 5 is the optional bands combination. In these two kinds of combinations, the images contain abundant information and moderate brightness. The features are more obvious to distinguish.

The developing high-power laser systems are requiring higher laser-induced damage threshold (LIDT) and fabrication efficiency of fused silica optical elements. To solve these problems, MRF polishing and HF etching have been combined utilized wiping and passivating structural defects as well as removing impurities. Furthermore, the LIDT improvement is dependent greatly on the corporation of processes. But the LIDT improving mechanism is partly ambiguous yet, that may lead to random or experimental parameter choice and ultimately generate unsatisfied results. Consequently, this paper focuses on the termination mechanism of the process. Atom Force Microscope (AFM) measurement, finite difference time-domain (FDTD) simulation and LIDT test will be utilized to analysis and validate the optimization theoretically and practically. Finally, in one side, the LIDT value of optimized-terminated sample is 16.7J/cm2, which is about the same level (even 3.7% higher) as that of the over-etched one. In another side, the etching process time could be shorted by 32% using the optimized method.

In imaging measurements on the fluid flow, the quality of particle image is essential to the outcomes of the velocity field. The method to eliminate the problems of refraction and reflection is to match the refractive indices of the working fluid and the surrounding solid wall. In this article, a comprehensive summary of the refractive index matching method was presented. Three fluid materials, two organic and one non-organic was used to conduct index matching and their effect were compared. Results show the perfect index matching is effective to improve the measurement accuracy of imaging measurements.

The technique took into account the high underground water level silty soil with stronger capillarity, subgrade soil easy water softened in Yellow River flood plain areas. It seriously affected the stability of subgrade. If lay a layer of gravel cushion in the ground, and then buried soft permeable pipes in the lower part of embankment, the permeable pipes filled with sand, the top of pipes sealed with geotextile, it would form the vertical drainage channel for the capillary water. So capillary water would along the vertical drainage channels formed by sand core soft permeable pipe and horizontal drainage channels formed by gravel cushion flowed out of the subgrade. The reliability of the method is verified by seep/w module in GEO-studio. This technique could effectively improve the strength and stability of subgrade, reduce the adverse effects of capillary water on the roadbed.

the new generation of Chinese for the new overseas Chinese children, they often lack the understanding of China, national psychological feeling weak, the so-called "banana" phenomenon. Analysis and based on the analysis of the investigation, and the new generation of Chinese American's cultural identity in the causes of this phenomenon,put forward to improve the new generation of Chinese cultural identity advice. Finally, in view of the current situation of the overseas Chinese Affairs, the new generation of Chinese culture the adaptation issues countermeasures.

ultrasound characteristics of the material microstructure nondestructive evaluation of its experimental sample TC4 titanium alloy microstructure of two-phase microstructure:. Α-phase and α + β phase. Phase material microstructure and grain area ratio directly affects the material uniformity, uniformity of material differences caused by different grain characteristics which ultrasound parameters. Flooding experiments using ultrasonic method for measuring the material longitudinal wave velocity; measuring the sound attenuation coefficient, combined with the area ratio of the sample α using multiple pulse method. Associated with the sample area ratio between the speed of sound and sound attenuation analysis of α-phase titanium alloy TC4 through the material properties of ultrasound to characterize the degree of uniformity of the material microstructure, nondestructive evaluation of materials in order to achieve the purpose of the microstructure.

Analyze the necessity of the standard management of explosive in the blasting equipment library of the coal mine, use digital monitoring technology, communications technology, software technology and sensor technology, use high-performance MCU STC12C5A60S2 and according to the instructions, control the opening and closing of the electronic lock, providing intelligent management

In the preparing process of carbon fiber, the fiber mechanical performance is affected by the pre-oxidation condition. In this paper the pre-oxidation technology condition of the original silk is researched, and the functional group in the molecule and the process of thermal gravimetric of the original silk and pre-oxidized silk are investigated by the method of infrared spectroscopy analysis and thermal gravimetric analysis. The IR analysis shows that associated hydroxyl is disappeared, Ar-H is decreased substantially, and methyl and methylene of the ring structure are changed greatly in the molecule of pre-oxidized silk. The TG analysis shows that the first weight loss temperature is increased, weight loss temperature range is moved to the higher temperature direction, the total weight loss rate is decreased, and weight loss velocity is decreased substantially. The mechanical performance of carbon fiber is affected by the pre-oxidation heating rate. When pre-oxidation heating rate is 1.5°C/min, the breaking strength of carbon fiber is 1195.84Mpa and the Young's modulus is 80Gpa.

Image edge detection is easily affected by noise. Wavelet algorithm can divide the image into low frequency and high frequency. By the processing of high frequency signal and the reconstruction of wavelet coefficients, the purpose of removing noise can be achieved. In the environment of VC++6.0, an image de-noising algorithm based on the wavelet combined with the Canny edge detection is proposed, which obtains a good result. The above algorithms are implemented based on OpenCV, which is more efficient, providing the conditions for subsequent image analysis and recognition. Experiments are carried out and the results show that the proposed algorithm is available and has a good performance.

By analysis the causal relationship of the public health emergency actions and effects, then establish a generalized model for the prevention and control of public health emergencies by Timed Influence Net (TIN), and on this basis of probability reasoning, inference result can assist analysis the pros and cons the emergency scenario. Method was applied to the example of SARS outbreak in Beijing in 2003 to show the rationality and validity of proposed method. According to the results have a study on the optimization of emergency scenario, optimized conditions comparative and analysis with the actual program. The results show that the proposed method can better support emergency scenario evaluation and optimization.

In allusion to mining design of succedent filling method on heavy-water deposit of Nanlizhuang iron ore, based on engineering geology, hydrogeological conditions of the mining area are studied. Through geological structure, strata and deposit hydrogeological condition were surveyed, analyzed source of water filling and main way of the ore deposit, and determined hydrogeology parameters of the mining area. It provided the theoretical basis for mining design and water inflow forecast, and will lay the foundation for safety production and production capacity of the mine.

Established the dynamics simulation analysis model of crane hoisting mechanism based on the theory of dynamics in Adams software, and then through the three dimensional model of lifting mechanism dynamics entities, the constraints, load, drive can be added, the motion law can be defined to simulation analysis the change of the force of wire rope, the change of displacement, velocity and acceleration of lifting weight in the lifting process. On the basis of the simulation results, it can make a great improvement for the structure of crane and provide a meaningful theoretical reference for the hoisting machinery innovation design.

In this paper, first introduce data mining knowledge then focuses on the clustering analysis algorithms, including classification clustering algorithm, and each classification typical cluster analysis algorithms, including the formal description of each algorithm as well as the advantages and disadvantages of each algorithm also has a more detailed description. Then carefully introduce data mining algorithm on the basis of cluster analysis. And using cohesion based clustering algorithm with DBSCAN algorithm and clustering in consumer spending in two-dimensional space, 2,000 data points for each area, and get a reasonable clustering results, resulting in hierarchical clustering results valuable information, so as to realize the practical application of the algorithm and clustering analysis theory combined.

Rule curves are guidelines for long term reservoir operation. An efficient optimization technique is required to find the optimal rule curves that can mitigate water shortage in long-term operation. A new functional approach was proposed to search the optimal rule curves of reservoir. The results indicated that the situations of water shortage and excess release water of using the new approach are smaller than the situations of using the existing rule curves.

Urban rivers have always been the foundation of urban development. In the industrial era, many countries, including China, have experienced the painful lessons of environmental pollution. From the human-water relationship study date back to ancient time, we know that there is urgent need for the reversal of this negative human impact. The naturalization design of urban water landscape requires (1) use the advanced science and technology in project planning, design, construction and management; (2) save the project investment, speed up the progress and guarantee the project quality; (3) suitable for bio-lived and multiplied and for the survival needs of the organism after river training. When conducting the urban river landscape design, we should plan and design carefully based on natural and ecological principles, and the aim is not only visually pleasing, but also ecologically sustainable.

In arid area, ecological remediation aims at decreasing soil erosion by foresting. Distributed SWAT model is further improved model of integrated model, capable of analyzing the relation between river runoff, sediment and land use change by human activities. In this study, distributed SWAT model is built in the Heihe River Basin to simulate watershed water and sand conditions, and natural state of river runoff and sediment without ecological remediation project is estimated. Significant differences are observed between the estimated natural state runoff and sediment and conditions after the remediation projects. This provides valuable reference for effect assessment of Heihe River Basin ecological remediation project.

The atomistic-scale cold welding processes for metallic nanowires (NWs) are studied using embedded-atom molecular dynamics (MD) simulations. The mechanical behavior and structural evolution of the FCC metallic nanowires, including Au, Ag, and Cu materials, that experienced a mechanical stretching break and solid-phase pressure welding process, were investigated. The welding temperatures (Tw) ranging from 100 to 900 K were systemically investigated on the effects of welding strength. The ratio of welding strength, Rws, defined as the ratio between the welding strength and the original yield strength of NWs, was employed to identify the welding quality. Simulation results show that the Rws of Au NWs is better than those of Ag and Cu welded at room temperature; however, for welding at high temperatures (600~900 K) the Rws value of Ag NWs is the best. The Rws values of Au NWs using cold welding show less variance than with high temperature welding, reflecting that the application of cold-welding on the Au NWs is highly feasible. The Rws values for NWs with small diameters are generally higher than those with large diameters. The breaking places of the tensile test for the post-welded NWs didnt occur at the welding region, indicating that the broken wires can be robustly reconnected through solid-phase mechanically-assisted welding methods.

Based on EDM method combined with ultrasonic field, the effects of different electric current, impulse width, and voltage on the surface morphology of nickel microspheres were studied. The preparation condition and forming mechanism of microspheres with compact and smooth surface were investigated. The result shows that removal rate and explosion force of the electrode materials play an important role in forming microspheres, and homogeneous nucleation goes against the uniformity of the surface morphologies of microspheres.

This paper proposes a Improved positioning algorithm of electrical partial discharge applied for substations. This algorithm is based on received signal strength indication, and taken practical condition of sensors into consideration by replenishing beacon nodes. Compared with traditional trilateral weighting positioning algorithm, this paper introduces indefinite amount of localization perpendicular lines and combined them with trilateral districts to calculate the weighting result, which can reduce error. This model meets the requirement of reality that the height of electrical discharge spots differentiate from the height of the plane formed by beacon nodes (signal sensors). The experimental result indicates that the revised position model proposed by this paper can effectively fit the condition of monitoring hardware. Error of this algorithm is less than that of traditional trilateral localization.

To study the influence factors of energy efficiency operation index (EEOI), an EEOI model is established by taking a 46000-ton oil tanker as an example and with the aid of software. The factors affecting EEOI are divided into determined factors and random factors according to the Monte Carlo method. The time-change curves of EEOI are obtained and further analysis of the influence of the characteristics wave height and load on EEOI is made. Results show that improving the loading rate can effectively improve the EEOI and reducing the speed can make the EEOI drop, the higher the wave is , and the less the effects are. The method has a certain reference value for making energy efficiency management scheme.

Uses 2011 years TM/ETM images classification were land uses/cover type figure, combination Great Khinggan area digital elevation model (DEM), and soil type distribution figure and research regional rainfall information, we got all factors values of space distribution in the USLE model, got soil erosion volume estimates data and soil erosion strength distribution figure based on grid cell data. Result indicate that the micro-absolute percentage of erosion throughout the study area, with increasing slope, area of erosion and erosion gradually reduce trend increases with the elevation increases, reduced erosion area after, generally good soil and water conservation in the region.

In this paper the numerical simulation is performed by using the CFD soft FLUENT. A 3D geometric model is established and whose mesh is generated. The fields of the temperature, pressure and velocity in the computational domain are simulated. And the effect of the corrugation depth on the heat transfer and flow is analyzed.

Estimating groundwater recharge and groundwater discharge are key components in determining the sustainable utilization of groundwater resources. Infiltration recharge by rainfall and irrigation water recharge are the main supply of groundwater in the study area. In this paper, based on the hydrological budget method, we analyzed, the utilization of groundwater resources, calculated, the recharge and excretion of groundwater in the study area from 1995 to 2012, and finally, pointed out the groundwater level is mainly affected by the irrigation water. Therefore, readjustment of the structure of plant is to ensure the ecological environment, utilize rationally the groundwater resources and achieve the goal of sustainable use of groundwater resources.

This paper proposed an improved ant colony optimization(ACO), to solve the economical operating dispatch of automatic generation control(AGC) units in hydropower station. The improved ant colony algorithm PSO-ACO imported particle swarm optimization is put forward. Both of the global convergence performance and the effectiveness of this algorithm is improved by using self-adaptive parameters and importing PSO to optimize the current ant paths. The mathematical description and procedure of the PSO-ACO are given with the maximum plant generating efficiency model as an example. Finally the superiority of the PSO-ACO is demonstrated by the application of AGC units on right bank of Three Gorges hydropower station. The optimal solution is more accurate and the calculation speed is higher than other methods.

EGSB anaerobic reactor is used to treat the papermaking wastewater, and this paper explore the law of its quick start, HRT and operation cost. Results showed that, during the 47 days, at the condition of inlet COD concentration 2000mg/l, HRT 8h, ascending velocity 0.8m/h, gas output 3600L/d, the COD removal rate can reach up to 65%, and the operation cost is 0.75Yuan/t.

To solve the problem of how to evaluate coal floor multi-aquifer which is under complex hydro-geological conditions, a new approach is presented, which is AHP vulnerability index method based on GIS. In the research the main controlling factors influencing coal floor water inrush and its weight factors are taken into account. The method truly reflects the nonlinear dynamical process of coal floor inrush under the influence of many factors. Applying this method to evaluate the water inrush vulnerability of No.13091 working face No. 21coal floor aquifer in L1-3limestone and Ordovician - Cambrian limestone in Pingyu 1st coal mine, the results have showed that this method is more effective comparing with other traditional water inrush coefficient methods. The problem of indicating coal floor water inrush under complex hydro-geological conditions has been solved by using this method.

There are several nondestructive testing techniques available to test the compressive strength of the concrete and the Rebound Hammer Test is among one of the fast and economical methods. Nevertheless, it is found that the prediction results from Rebound Hammer Test are not satisfying (over 20% mean absolute percentage error). In view of this, this research intends to develop a concrete compressive strength prediction model for the SilverSchmidt test hammer, using data collected from 838 lab tests. The Q-values yield from the concrete test hammer SilverSchmidt is set as the input variable and the concrete compressive strength is set as the output variable for the prediction model. For the non-linear relationships, artificial intelligence technique, Support Vector Machines (SVMs), are adopted to develop the prediction models. The results show that the mean absolute percentage errors for SVMs prediction model, 6.76%, improves a lot when comparing to SilverSchmidt predictions. It is recommended that the artificial intelligence prediction models can be applied in the SilverSchmidt tests to improve the prediction accuracy.

For accurately studying the performance of LiFePO4 battery group, this paper conducted CC and HPPC cycle charge/discharge performance tests of LiFePO4 battery, and designed an improved equivalent circuit model based on the data analysis. Compared to the traditional model, the model considered the impact of the hysteresis voltage, had more accurate corresponding relationship between SOC and balance voltage, obtained a more realistic overpotential property by contrasting different order models. Estimated model parameters, modeling in Matlab / Simulink environment and simulation in the UDDS condition, verified the accuracy and feasibility of the designed model by comparing with experimental data.

Hydrological exploration tests are designed and field data are acquired. By combination of theories and experiments, hydro geological condition and water filling factors of Mayingbao coal mine field are analyzed systematically aiming to ascertaining threatening degree of water hazard of the mine field and studying theory of mine water hazard prevention and control. According to coupling theory between GIS and AHP, models of “water abundance index” and “vulnerability index” are founded respectively. By methods of “three maps-double predictions” and “vulnerability index”, water inrush probability from roof and floor of chief exploitable coal seams in the mine field are evaluated quantitatively. Comprehensive regionalization of roof water filling probability and evaluation regionalization of floor water inrush vulnerability of the seams are formed. Based on above study, water inflow of first mining area is predicted and suggestion of water prevention and control for safety production is put forward. Nonlinear and multivariate theory in present geoscience research is improved because of the above results and the research provides necessary basic data for the mine designing, preliminary and feasibility research and subsequent safety production.

Phospholipids are one of important factors in inflammation development. To discover relationship of inflammation and phospholipids, we carried out the bioinformatics study on relationship of inflammation and phospholipids by Cytoscape software with Agilent Literature Search and ClusterONE plugins loaded. We found 7 predominant network pathway which could explain the relationship of inflammation and phospholipids. The Cytoscape software with Agilent Literature Search and ClusterONE plugins is very powerful tool for discover potential pathways to explain Pathophysiology mechanism.

The performance and emission characteristics of diesel engines are largely governed by fuel atomization and spray processes which in turn are strongly influenced by the flow dynamics inside the injector nozzle. Accurate measurement of the nozzle geometry is important for the study of the flow dynamics. Using the third-generation synchrontron radiation light source of the ShangHai Light Source (SSRF), the research team successfully captured the internal structure images of the single hole nozzle and multi-hole nozzle. According to the captured images, the researchers clearly observed the internal structure of nozzle as well as the sac region. The diameter and length of the nozzles and orifice angle were also be accurately measured.

The current paper describes a water environment monitoring system, which is focused on the online monitoring techniques of groundwater detection, data process and transmission, a local experiment equipment is also developed. Besides, an integrated study, in terms of host computer of the groundwater monitoring system, programmable logic controller (PLC) control system and sensor technology is carried out. Moreover, the secondary data process of automatic detection instrumentation and display technology is integrated, as well as the visualized data platform is primarily established. The water environment monitoring system improves the standard of monitoring indicators from the surface water environment to groundwater environment. The detection interval of the system is less than 3min, and the pollution forecast scope surpasses 16 km2. A high accuracy of the forecasting and risk analysis can be obtained.

Based on the vehicle-track coupled dynamic theory, a new method was developed to monitor the state of heavy-haul train, this method can dynamically monitor the wheel/rail dynamic safety performance of heavy-haul train in the dangerous operation condition. The results show that: wheel/rail dynamic action is obvious whether the wheel flat is new or old, and wheel flat could lead to mutational vertical force.

Carboxy methyl cellulose (CMC) wastewater contains high salinity (>10%) and chemical oxygen demand (COD) which results from organic by-products during production. It is usually necessary that the wastewater is pretreated before biochemical methods are employed. In this paper, distillation method was used to pretreat CMC wastewater and a kind of organic acid (Ethoxyacetic acid) was extracted. Effect of solution pH on the purity of ethoxyacetic acid was studied.

In this paper we propose a novel Lattice Boltzmann method (LBM) incorporated with Large Eddy Simulation (LES) to simulate diesel engine spray process. The proposed LB-LES method combines several advantages of LBM and LES including clear physical pictures, easy implementation and capacity to describe turbulence structures of high Renolds fluid, it also can settle the problem that LBM cant converge of high Renolds. Simulation result shows: (1) Strong vortex exist around the spray cone and head of the spray; (2) A high fuel density regime exits inside the head of spray, that verifies the experiment result of American APS laboratory with the application of avalanche photodiode (APD) X-ray imaging technology to spray field; (3) LB-LES method can simulate the surface undulation phenomenon of spray which is generated by the aerodynamic force in the case of high Renolds.

Chinese microblogging texts are always short and casual, which bring some troubles to the traditional sentiment classification methods based on learning. To overcome this problem, we use a rule-based approach to classify the sentiment of Chinese microblogging texts. According to the characteristics of Chinese microblogging texts, we construct a thesaurus of subjective words for it, summarize the basic semantic rules expressing emotion and propose a rule-based approach to sentiment classification of Chinese microblogging texts. Finally, we compare our approach with a SVM-based approach. Our rule-based approach achieves an accuracy of 0.865, which is better than that of SVM-based approach.

This study mostly investigated the influences of electrolytic conditions and the structure of electrospinning nanofibers electrodes on the degradation of methylene blue in details. For PAN and Fe/PAN electrodes, was prepared by electrospinning.It was found that the ESF electrodes with higher specific surface area, and higher mesopore percentage could be push the electrochemical degradation. As the same time, adjusted the initial pH, increased the current, and added to electrolyte also could improve the treatment effect of electrochemical degradation. After 90min of electrolysis, the color removal efficiency of methylene blue reached 97.6% at current with 100mA, supporting electrolyte of NaCl with 0.1mol/L and initial pH with 3~5. Under the same current conditions with the Pt-Fe/PAN anodes the color removal rate of degradation were higher efficiency than the other two anodes.

This paper studies the degradation of herbicide atrazine. It was degraded by three-dimension-electrode electrochemical oxidation, which platinum was used as cathode and anode, and activated carbon was used as packed material and adsorbent. The effect of input current, initial pH, electrolyte concentration and solution temperature on degradation efficiency of atrazine was discussed. The results showed that atrazine can be effectively degraded by three-dimension-electrode electrochemical oxidation. The optimal conditions of operation are as follows: input current is 30mA, initial pH is 4, solution temperature is 20°C, and electrolyte concentrations is 0.10mol/L. Under the optimal conditions, degradation efficiency of atrazine can reach more than 99%, and the degradation rate is highest.

The research used activated carbon fiber (ACF) as adsorbent to remove atrazine, a kind of herbicide. It set a series of static adsorption experiments under different solution temperature, pH value and initial concentration to get a optimum adsorption condition. The experiment shows that the optimum pH for the removal of atrazine is 7. The adsorption rate is highest at 20°C. The adsorption rate decreases while the initial concentration increases.

Due to the geological, hydrogeological feature along the main canal and construction characteristics of the inner drainage section engineering in the south-to-north water transfer project, pollutants might enter into the main canal with the groundwater, which may cause the main canal water quality risk. This study confirmed the rationality of the sensor research and guarantees the stability and accuracy of the groundwater detection based on the contrast of accuracy on the index of and comparison between groundwater sensor inspection and lab analysis data. For demonstration field monitoring at the same time, the running data was stable. Setting up demonstration project lays a solid foundation for building the key technology that is suitable for the water conveyance project of major water pollution control and water quality security system.

Introduction is given to the content of activated sludge model No.3 (ASM3). The simulation program which based on the integration of ASM3 and Anaerobic Digestion Model was used to simulate A2/O with AquaMats Process. The predicted results of effluent COD, NH3-N and NO3-N accorded with the actuality. The removal efficiency of TP was quite low when sludge return rate was 100%. Based on this condition, the improved scheme which adjusts sludge reflux ratio to 60% was put forward and simulated. Process was optimized depending on the simulation results and the removal efficiencies of COD, NH3-N and TP reached to 83.1%, 98.75 and 24.01%. It is verified that ASM3 can be used as the platform of activated sludge process design.

An electrokinetic and magnetic remediation system of polybrominated diphenyl ethers (PBDEs) contaminated soil was built in the laboratory. The characteristics of BDE15 migration under non-uniform electric field and uniform magnetic field were investigated. The results indicated that current and temperature in the soil reached the maximum values 100mA and 14°C respectively in 6h; the moisture content of soil near the cathode and anode was higher than in the middle position; pH values of soil increased gradually from the anode to the cathode and acid-base interface was in the soil area between 3cm from anode and 5 cm from anode; BDE15 mainly enriched in the area 5cm from the anode and reached 22.69μg·g-1.

Traditional models of power plant boiler superheater are incapable of simulating the operating conditions under large disturbances with high precision. To resolve this challenging problem, this paper presents a nonlinear lumped-parameter dynamic model of power plant boiler superheater. The present model describes the dynamic processes of the pressure-flowrate and the enthalpy-temperature channels with sufficient consideration of their coupling effect. To better capture the distributed-parameter property of superheater temperature, the multi-segment lumped-parameter modeling method is employed for modeling the enthalpy-temperature channel. Dynamic responses of the last-stage superheater of a 600 MW controlled circulation boiler to disturbances of the spray water flowrate, the superheater inlet enthalpy, and the absorbed heat flux are simulated. Simulation results show that dynamic responses of the present model are reasonable, and the model has high precision, which can meet the requirements for full scale simulation and control system simulation.

It is a problem to build Inter Satellite Links so that Region Navigation System has optimal performance. Therefore, the article puts forward an algorithm, which synthesizes the time of satellites accessed and the distance of satellites. And then it carries out a simulation in navigation system to certify the superiority of the algorithm. The experimental result shows that the ISLs can effectively improve the performance of navigation system. And comparing with the traditional Minimum Distance Algorithm, the proposed algorithm has the same effect on improving the performance of navigation system and needs fewer times of changing links.