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Photochemistry to prepare platinum nanoparticles (Pt NPs) is an essential way to control Pt NPs catalyst size distribution. This article reports a series of morphologically controlled syntheses of Pt NPs loaded on modified carbon nanotube (Pt-CNTs). In the synthesis, Polyethylene glycol (PEG) participates in reactions both as a reducing agent and a stabilizer. Visible light irradiation was adopted as a kinetic controlling approach. Typical 4-nitrophenol (4-NP) reduction was adopted to probe the catalytic performances. Characterizations prove that visible light irradiation is an effective way to control the reaction process. In the optimized reaction conditions, i.e., when the ratio PEG:H2O is 1:9, and the pH is 10, the as-prepared Pt NPs are consequently in a very narrow sized distribution with an average diameter of 1.29 nm. The Pt-CNTs present a high reaction rate constant of 0.624 min-1 in the catalytic reduction of 4-NP. All the research results are beneficial for exploring more green chemistry and facile photochemical approaches in the controlled preparation of Pt nanocatalysts.

Carbon nanodots (CDs) have been synthesized by chemical oxidation of C6H12O6 in NaOH solution . The as-prepared CDs possess strong blue luminescence.KH560 serve as coupling agent to modify the quantum dots by the method of ultrasound reaction .Finally the obtained C-dots powder have been successfully grafted with quercetin,which is one kind of flavone .This process made the drug have better thermal stability.

According to the rock high-cut slope excavation engineering practice of a substation in Jiangxi, with the goals of stable and economic rational slope design, numerical simulation research of the slope ratio and unloading platform and design optimization work was carried out. The slope safety factor, displacement and plastic zone distribution changes of different slope ratio and platform setting programs were obtained. The results show that:(1) the adjustment of the slope ratio and platform can significantly affect the slope displacement and plastic zone distribution, reasonable slope ratio and platform can reduce the horizontal displacement and plastic zone of slope, increase the safety factor and stability;(2) the slope monitoring results show that numerical simulation optimization design is feasible, and the excavation slope maintain security and stability during the construction period, and economic benefit has been obtained. The research conclusions can provide technical support for the engineering design, and reference for design and research of high-cut slope excavation engineering with similar conditions in that region.

Considering the contact effect between foundation and soil, the dynamic interaction model of tower-foundation-soil coupled system is set up with visco-elastic artificial boundary as the soil boundary. The seismic time history response of a tower-foundation-soil system under three different site conditions is calculated, and compared with the results that do not consider the effect of tower-foundation-soil dynamic interaction. It shows that the displacement of tower and the axial stress of the members substantially increased on soft sites and medium soft sites while no significant change on medium hard sites and hard sites when tower-foundation-soil dynamic interaction is considered. Therefore, it is suggested that the tower-foundation-soil dynamic interaction should be considered in aseismic design of transmission tower on soft sites and medium soft sites.

Motion precision is an important evaluating index to evaluate the quality of the mechanisms. On the premise of fully studying the motion of joystick in the excavator, a new kind of joystick-control mechanism is proposed. The dynamics simulation model of the mechanism is constructed by ADAMS, so the dimension error and initial angle error of joint in the installation is analysed. Random sampling method are adopted to simulate the error of position of two key points, the simulation of transverse and longitudinal swing of is completed, and the effect on the motion precision of joystick is compared which is made by error of each direction of two key adjusting points. The motion reliability of the joystick-control mechanism is calculated, combined with the stress-strength interference theory.

The design and debugging of motor control algorithm for electric drive tracked vehicle as the research object, this paper proposed a graphical model programming method of the code directly generated based on vector control algorithm model of the permanent magnet synchronous motor created in Matlab/Simulink. After simulation analysis and verification, this paper using real time toolbox automatically generated the embedded C code and implemented a processor in the loop test. The test results show that the longest running time of the control algorithm was 7.1633μs, between code and algorithm model, had high functional equivalence .This programming method is simple and intuitive, easy debugging, stable operation, and provides an effective way for motor drive system software development of electric drive tracked vehicle.

In order to manage the power of electric drive system effectively and improve the fuel economy and working efficiency of electric drive tracked vehicle, this paper proposed a novel energy management control strategy based on the theory of threshold logic and fuzzy logic. The mathematical models of the key components of electric drive system were built in SIMULINK. To examine and analysis the efficiency of control strategy, a driver-controller based HILS (hardware-in-the-loop simulation) platform was built and the energy management control strategy was verified. The simulation results reveal that the strategy have excellent performance in energy distribution, fuel saving and working efficiency, and the proposed control strategy is simple and easy to realize in a real controller, which provides an effective method for the design and application of energy management control strategy of electric drive tracked vehicle.

nanosilica porous thermal insulating composites belong to super thermal insulations, which are prepared by dry molding technology. They have many advantages in comparison with aerogel such as easy preparation and good mechanical property. However, springback phenomenon is found in the process of molding. The springback is easy to lead to cracking of the samples, which directly affects applications of the composites. In order to solve this problem, steam curing method is introduced and the effects of steam curing medium and steam curing time on springback ratio are investigated. The results show that the springback ratio of composites is only 6.45% when water is selected as steam curing medium and the optimum steam curing time is 30 min.

According to the actual conditions of a high artificial backfill soil slope in a large thermal power plant’s in karst region with very developed caves in Guangxi Zhuang Autonomous Region, we carried out a number of slope monitoring works in order to timely and accurately getting of the stress and displacement distributions of slope retaining structure, to ensure safety of the thermal power plant, and to verify the safety and reliability of the slope design. Through a large number of monitoring data, obtained the development and change rules of the displacement, reinforcement stresses and anchors tension of the slope protection pile and retaining wall. Monitoring data shows that the design for the slope engineering has a good effect, and slope retaining structures are stable as a whole during the monitoring period. This research provides reference in design and monitoring for other projects in this area.

This paper presents a new method to locate partial discharge source of transformer single-winding with the transformer single-winding model and Matlab software simulation. This transformer single-winding model is composed of 300m long wire, which is equivalent to the parameter model composed of only capacitors and inductors through the frequency characteristic analysis of transformer winding. In the process of simulation, the bushing and neutral point current of transformer winding are measured when partial discharge occurs in different position. Then we can get position factor related to the current mean and variance measured through calculation, analysis and deduction. Accordingly the position of partial discharge can be found by corresponding relation. This simulation indicates that this method is effective and practical.

With the rapid development of electric power construction , transmission lines and the surrounding geological environment influence each other that has become increasingly serious, however, there is not formed yet a set of complete and more scientific geological environmental evaluation system in transmission lines at present. In this paper, on the basis of using the experience of other industries of geological environmental evaluation research , study and put forward the geological environmental evaluation method specifically for transmission lines. Evaluation system is established for transmission lines in planning period and construction period , and also put forward the corresponding evaluation index. The research conclusion can provides theoretical support and maintenance for transmission lines of the whole life cycle design,and it also provides reference in designing transmission lines plan and preventing, and controlling geological environmental problems of transmission lines for the decision-making department.

This paper, based on the Retinex Color Constancy Theory, proposes a novel multi-view image correction algorithm, which correction effect is very effective. Histogram equalization,retinex processing and color restoration are performed for multi-view images,and extract reflectance which describe object intrinsic properties to eliminate un-consistent light source influence.The experimental results show that corrected images not only have high color contract,also have consistent color appearance with others.

High purity AL2O3-MgO carbon-free refractories for ladle lining were investigated, this paper compared with the properties of bricks with different bond system and different production process, and study the wear mechanism, the TOC and hydrogen content change; analyzing the microstructure of residual bricks and the impact of refractories on quality of molten steel;Conclusions:The two kinds of bricks have different wear mechanism, the bricks bonded by a-bond was damaged mainly by penetration and erosion while the bricks bonded by resin was damaged by structure spalling and they have different effect on cleanness of molten steel.

In order to improve the prediction accuracy of wind power, this research is based on time series and improved BP-ANN algorithm. The basic idea is described as follows: wind speed forecasting model is established by using time series method; wind speed-wind power model is built by utilising improved BP-ANN algorithm; wind speed data from time series forecasting is used as input of neural network model, and the prediction results for wind power are obtained. In order to analyse the availability of wind power prediction model, the mean absolute error and correlation coefficient are compared to analyse the predictions results. The results show that the prediction model can effectively improve the forecasting accuracy of wind power.

In this paper, the preparation of PANI was investigated via in secondary doping in-situ chemical oxidation polymerization. We use NH2SO3H as dopant, and HP3O4, H2SO4or HCl as secondary dopant, respectively. The influencing of products conductivity was discussed about difference secondary dopant with changing concentration. The synthesized polymer composites are characterized by Fourier Transform Infrared Spectroscopy (FTIR) and four probe conductivity apparatus. The results show that in redoping process, the conductivity of PANI was 3.1746 S/cm when the concentration of HCl was 1.0 mol/L. Meanwhile, the thermal stability of PANI prepared with HP3O4or H2SO4as secondary dopant was better than HCl as secondary dopant.

Functionalized magnetic silica nanospheres were prepared by hydrolyzation of tetraethyl orthosilicate (TEOS) on Fe3O4and modification of Fe3O4/SiOx. Structure of functionalized magnetic silica nanospheres were characterized by transform infrared spectroscopy (FTIR) and differential thermal analysis (DTA). Cellulase was immobilized on functionalized magnetic silica nanospheres through cross-linking method. Saccharification rate of the immobilized cellulase is 70 % of that of free cellulase. The saccharification of the immobilized enzymes after 8 continuous uses still have 10 % of the initial saccharification rate, which demonstrate the potential of this immobilized cellulase for biofuel production.

A Homotopic BI neural network model is developed by combining the homotopy theory and the BI neural network model, to improve the defects of the steepest gradient descent algorithm itself, such as low speed converging and liable to be trapped in local minimum. The end-point carbon content and temperature of molten steel in BOF smelting process is predicted by the proposed model and the original. Result shows that the precision of new model is improved significantly. The hit rates are increased by about 5% and 10%, and the forecasting residuals have decreased 16.31% and 8.67% than the conventional ones, respectively. Also, the calculation time of the new model is 10% shorter than BI model.

To investigate the effects of grinding media size on the grinding kinetics of cassiterite-polymetallic sulfide ores, the ball grinding media with diameters of 25mm, 30mm, 35mm and 40mm were studied in a laboratory ball mill. The results showed that the coarse and fine particles obeyed the first-order grinding kinetics laws in the process of grinding and the ball grinding media with 35mm diameter had a significant advantage on grinding up the coarse particles and controlling the generation of fine particles, which could provide theoretical guidance for practical production so that the grinding effects would be improved effectively and the problem of cassiterite over-grinding would also be settled very well.

Tetrahydropalmatine in overall yield of 18% was synthesized from alkaloids in Coptids Rhizoma with the similar structure of isoquinoline by a three-step reaction of alkaloids preparation, demethylation or demethylene-dioxy, deoxidation, methylation and so on. The structure was confirmed by 1H-NMR IR and ESI-MS.

Vehicle suspension is a MIMO coupling nonlinear system; its vibration couples that of the tires. For the suspension without decoupling, the vibration attenuation is difficult to be controlled precisely. In order to attenuate the vibration of the vehicle effectively, a nonlinear half vehicle model with active suspension is established and a differential geometry approach is used to decouple the nonlinear suspension system. The decoupled system becomes independent linear subsystems, though pole assignment, the vibration attenuation of the sprung mass is achieved. The simulations show that the vertical and the pitching motion of the sprung mass are attenuated greatly, which indicates that the control algorithm is effective.

The grinding kinetics are strongly affected by the grinding media size and style, in order to improve the grinding efficiency and solve the over-grinding problem of cassiterite in the process of grinding in cassiterite-polymetallic sulfide ores plant. A unique double-sphere grinding media has been designed and the grinding kinetics of this media with different diameters for grinding products of different size fractions have been investigated in this paper.

Li2FeSiO4/C composites were prepared from silica waste by a traditional solid-state reaction method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), elementary analyzer, galvanostatic charge-discharge test and electrochemical impedance spectroscopy. XRD results reveal that Li2FeSiO4/C composites fabricated from silica waste have some impurity. SEM results indicate that the particle size of Li2FeSiO4 composites is nearly accord with the particle size of silica waste. Electrochemical measurements indicate that Li2FeSiO4/C composite prepared from silica waste have comparatively good electrochemical performance. It can deliver a specific discharge capacity of 137.6 mAh g-1 at a charge-discharge rate of 0.1 C.

In this paper, we believed that social tag is a new paradigm of resource organizing and sharing. It is a very suitable technology using in e-learning systems. We discussed with the learning process in the e-learning system based on social tags. We brought forward a new individual learning process model based on social tags. And we compared with the new learning process model and traditional process model. The new individual learning process model could improve the interaction between learners and between human and computers. The social tags could help the e-learning system build the learners preference model and knowledge model.

The core drilling method is used for testing the concrete strength of the cast-in-place piles during the construction of a power plant. The concrete strength of some cast-in-place piles is far lower than the normal expected value. The incorrect construction sequence is the main cause of the quality problem. It is inadvisable to shorten the time limit for a project while ignoring the project quality. The more time will be spent to solve the quality problem of the project after the construction is complete. The construction organization is important for the quality of the projects and the reasonable construction sequence can improve the project quality.

Using 1-methyl-3-alkylcarboxylic acid imidazolium chloride ([CMMICl) ionic liquid (IL) as synthetic environment, CMMIm-PANI and CMMIm-PANI@ATP composites were successfully prepared via in situ chemical oxidation polymerization. The chemical characterization of the material before and after ATP adding was performed by means of Fourier transform infrared spectroscopy (FTIR). The morphology of the coatings was observed employing scanning electron microscopy (SEM). The results are further indicated that PANI which coated on the surface of rodlike crystal ATP helped the formation of conductive path among ATP crystals which overlapped each other. The four probe conductivity apparatus was used to analyze the electronic properties of the composites. The conductivity of CMMIm-PANI@ATP and CMMIm-PANI are 10 S/cm and 1.8 S/cm respectively, which clearly showed that the introduction of ATP in composite makes the conductivity increased largely. In addition, thermogravimetric analysis shows that the thermal stability of CMMIm-PANI/ATP composites was enhanced and these can be attributed to the effect of coated ATP as barriers for the degradation of PANI.

The article established electrospun nanofibers as extraction medium to enrich and purify salidroside and detected the content changes by high performance liquid chromatography. 4 g polystyrene was dissolved in 20 mL butanone for spinning. The electrospun nanofibers was processed and loaded into solid extraction column. 3 mL sample was injected and eluted by 10 mL methanol at the speed of 2 mL/min, collecting the elution for the HPLC analysis. The results show that the relative content of solidroside increased from 24% to 55% and the extraction recovery was above 92%. The method is simple and convenient. It can replace traditional solid phase extraction to enrich solidroside.

This paper analyzes the transmission loss of streaming media and presents a adaptive algorithm which can Intelligently adjust itself to the size of the network packet stream when network resources are adequate for the situation,. The algorithm calculates the best data packet based on RTCP protocol by controlling the change of the server-side data packet size to dynamically adjust the sending rate, so that it can achieve the best multimedia data streams transmission in a limited time and under limited network resources to improve QoS of stream media of network.

Bag is an important stuff in daily life, which is used to carry personal necessary articles. The elderly people usually cant distinguish the articles in the bag easily due to the decrease of vision with age. Moreover, because of the poor immunity, the elderly people are easy to be infected by bacteria. The purpose of this paper is to design an elderly-specific bag which can help elderly people distinguish the articles by touch and avoid infection due to the contamination of food and drug by mixed together with money and keys etc. Questionnaires were prepared and given to 80 aged people to determine the stuffs which they usually carry in the bags. After statistical analysis, graphic symbols were designed to characterize the stuffs that the elderly people carry most often in daily life. These symbols were tested by the aged people to determine which is the most suitable to characterize the correspond stuff. After that a bag with these symbols and modular was designed.

According to the fundamental theory and rational mode of ecological campus development, Nanshan campus of Chongqing University of Education (CQUE) was planned and constructed. The landscape structure mainly bases on the framework of one center, one axis, one circle and three veins; weaved in is the network of greenery, which is consisted of the core, gallery, band, gardens and spots of planting; meanwhile, the unique history and culture of CQUE are integrated into the landscape design. Consequently it is achieved of good ecological, economic and social benefits.

Starting from terrain analysis, this paper uses GIS space analysis technology, through constructing study frame of mountain city complex terrain, to state how to conduct the effective utilization and reasonable reformation to complex terrain, and put forward the new vertical design method of mountain city complex terrain, and combined with the vertical design in new Dali Haidong District planning to prove.

The DC-bus voltage control is critical for stable operation of the three-phase four-wire Active Power Filter. DC-bus stable voltage loop and balance voltage loop are established based on the small signal model. Considering the disadvantages of the traditional PI control, second-order low-pass filter is introduced into the proposed controller. Simulation and experimental results are conducted to validate the effectiveness of the proposed strategy.

Fe3O4-coated microsilica composites were synthesized by a novel method. The struction like precursor Fe3O4 nanoparticles as the shell and microsillica as the core for the composite has been prepared by chemical reduction method. The Fe3O4-coated microsilica composite presents a saturation magnetization value of 38.03 emu/g, which is sufficient to complete magnetic separation. The synthesized magnetic composites are characterized by X-ray diffractometer (XRD), transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The results indicated that Fe3O4 nanoparticles successfully coated on microsilica.

We prepared the polyaniline@polypyrrole (PAn@PPy) conductive composite by a novel method. The struction like Pre-prepared PAn as the core and PPy as the shell for the composite has been prepared by in-situ polymerization. The PAn@PPy conductive composite presents an electrical conductivity of 12.5 S/cm, which is much higher than pure PAn. The synthesized polymer composites are characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Thermogravimetric analysis (TG). The results indicated that PPy successfully grafted on PAn and the heat resistance of nanocomposite is remarkably increased.

Three new rare earth ternary complexes (NdLL'•4H2O, EuLL'•4H2O and LaLL'•4H2O) have been prepared with rare earth nitrates, tryptophan (L) and sodium citrate (NaL'). The characteristics of the complexes were identified by elemental analysis, IR, molar conductivity solubility and TG-DTA. The results showed the complexes have constant composition of RELL'•4H2O. And all of the rare earth ternary complexes have anticoagulant action.

The specific fracture energy of alumina-spinel refractory castables was studied by the wedge-splitting method in this paper. The influence of synthetic spinel on the specific fracture energy of aluminamagnesia refractory castables was investigated. In-situ formation spinel was replaced by sintering spinel as the synthetic spinel. The experimental results indicated that the specific fracture energy and the compressive flesural mechanical properties had the same changing trend with the increase of the synthetic spinel, but the thermal shock resistance of the materials showed the opposite trend. However, the thermal shock resistance was closely associated with the specific fracture energy according to one theory raised by Hasselman.

The alumina-magnesia precast blocks developed in authors company have been successfully used in 90-ton LF refining with an average service life 80-85 heats to meet the smelting demand of low carbon steel and ultra low carbon steel. The observation of the residual blocks revealed that the section of the used blocks was divided into four layers from inside to the surface, i.e., slag layer, reaction layer, penetration layer and the original block. It has been found that there was a certain degree of structure spalling of the used blocks. The main factor of blocks damage may be due to the penetration and erosion of molten slag. The results of SEM microstructure analysis indicated that the calcium oxide (CaO) of high basicity slag easily penetrated into the blocks and formed CA6 phase, and then transformed into CA2 or C12A7 phases gradually with the decreasing content of alumina (Al2O3). It has been found that an annular distribution structure, and the silicon dioxide (SiO2) was easily lost together with slag and formed SiO2-rich part in the penetration layer due to the formation of low viscosity and low melting point phase of C2AS. A large number of-5um spinel particles (MgAl2O4) were synthesized at 1600~ 1700, which could absorb FeO, MnO and other impurities in slag to form composite spinel phase. It is believed that the high melting point phases intertwined to form a dense area which was beneficial to improve the bricks' slag resistances to penetration and corrosion

The tidal motion of the ocean water through the ambient magnetic field, generates secondary electric and magnetic field. The magnetic fields generated by the diurnal (O1) ocean flow can be clearly detected. We simulate the magnetic signals for tidal constituents –diurnal (O1) tides. The idea of exploiting tidal signals for EM studies of the Earth is not new, but so far it was used only for interpretation of inland and transoceanic magnetic field data due to O1. Emphasis in this work is made on a discussion of sea bottom electric field of the same origin.

Si and C of rice rusk were used as silica source and pore-forming agent to prepare cordierite-mullite ceramics at 1380°C for 5 h soaking. The Nd2O3 additive was added to improve the sintering properties. The bending strength, porosity, and thermal expansion coefficient were measured. The composition was characterized by X-ray diffraction (XRD). The microstructures of the sintered samples were observed by scanning electron microscopy (SEM). The cordierite-mullite ceramic doped with 2% Nd2O3 have high prorosity and low thermal expansion coefficient, its bending strength reaches 20.55 MPa. The addition of Nd2O3 decreases the mullite formation temperature to 1200 °C

Aluminium titanate-alumina (AT-A) composites were sintered from the precursor powders prepared by two different methods: a simple sol-gel based heterogeneous precipitation method and a traditional blending method. The crystalline phase, microstructure, mechanical strength, sintering properties, and thermal expansion coefficient (TEC) of the sintered AT-A composites were investigated and compared. The heterogeneous precipitation method increases the homogeneity of the precursor powders and improves the mechanical and sintering properties of the AT-A composites. The AT-A composites with a Al:Ti ratio of 2.2 achieve the optimal performance where the bending strength is high and the TEC remains low.

Through the vertical static load test of pile, studied and demonstrated the applicability of cast-in-place piles in the construction of a thermal power plant’s in Guangxi Zhuang Autonomous Region, china. By testing the internal force of pile shaft, obtained the distribution of axial force, side friction and tip resistance, and ascertained the vertical bearing capacity of punched cast-in-place piles in the engineering geological conditions of this project. This research provides the important quality control standards and design basis for the follow-up pile foundation construction of large area of this project, and also provides reference for other projects in this area.

In this work, the complex of rutin-Mn has been synthesized. On the basis of elemental, thermogravimetric analyses, IR, the general formula of this complex, Na3Mn2•L(HCO3)3•3H2O is given. The interaction of serum albumin (BSA and HSA) with this complex has been studied by fluorescence method and the binding constants K (rutin-Mn-BSA: 3.1×108, 8.7×105; rutin-Mn-HSA: 3.3×107, 2.7×105) and the number of binding sites (rutin-Mn-BSA: 1.8, 1.2; rutin-Mn-HSA: 1.6, 1.1) has been obtained.

Fe2O3/H2O2, a kind of Fenton-like agent, was used to degrade an anion surfactant, sodium dodecyl benzene sulfonate(SDBS)，in an aqueous solution. Through a number of batch degradation experiments under various conditions, it was found that the reactivity of the system increased by increasing temperature. The SDBS degradation ratio will increase by, respectively, increasing H2O2 concentration and Fe2O3 dosage at some extent, but too high H2O2 concentration or Fe2O3 dosage will decrease the degradation efficiency. pH value has some influences on the reactivity of the system; from 2 to 10, the system maintains high efficiencies all the time. It also can be seen that Fe2O3/H2O2 Fenton-like reaction almost has the same efficiency as homogeneous Fenton reaction, while the former has a widely pH range (2-10), and Fe2O3 can be separated easily and has no secondary pollutants.

The corrosion inhibition behaviour of four selected Mannich bases compounds,namely 3-((N-methyl,N-phenyl)-methyl)2,4-Acetylacetone(MPMAA),3-((N-phenyl)-methyl) 2,4-Acetylacetone (PMAA),3-((N, N-diethyl)-methyl) 2, 4-Acetylacetone(DMAA) and 3-((N, N-methyl)-methyl) 2, 4-Acetylacetone (MMAA) as corrosion inhibitors for mild steel in 1M HCl solutions. Tafel polarization methods were performed to determine the corrosion parameters and inhibition efficiencies. Experimental results showed that PMAA is an excellent inhibitor for mild steel corrosion in 1M HCl solutions; showing a maximum efficiency 92.3% at concentration of 40mg/L. Polarization studies showed that the Mannich bases compounds can be regarded as mixed-type inhibitors and the inhibition efficiency of the four inhibitors followed the order PMAA > MPMAA > DMAA > MMAA. Then scanning electron microscope (SEM)techniques were also employed to examine the mechanism of corrosion inhibition property.

Fe2O3 and Fe2O3/attapulgite(ATP) catalyst was used for Fenton reaction to degrade an anion surfactant, sodium dodecyl benzene sulfonate(SDBS)，in an aqueous solution. Comparative studies indicated that Fe2O3/ATP-catalyzed Fenton system and Fe2O3-catalyzed Fenton system have the same catalysis capability. These two systems all have a widely pH range (2-10), and the catalysts can be reused and have no secondary pollutants. It also can be seen that Fe2O3/ATP-catalyzed Fenton-like reaction has much efficiency than Fe2O3-catalyzed Fenton reaction.

In sequencing batch reactor aerobic granular sludge was cultivated, and the influence of influent C/N ratio to aerobic granular sludge was studied. The results showed that the granulation and the settling ability of the sludge were poor in high C/N, however, low C/N was beneficial to the accumulation of microorganism in reactor and MLSS could reach to as high as 8740 mg/L. Lower C/N ratio would lead to increase of particle size and disintegrate of loose structure and overgrowth on filamentous microbe, these were disadvantage of the stability of the system. It was not obvious that influent C/N ratio affected on the organic removal. The COD removal maintained at 87% after the preliminary form particles were formed in reactor. When C/N ratio was 100:15~100:35, the phosphorus removal efficiency was good. If C/N ratio was too high or too low, the formation of sludge granulation would be affected in the process. The influence of C/N ratio to ammonia nitrogen removal efficiency was obvious. While C/N ratio was 100:10, granular sludge had good simultaneous nitrification and denitrification performance, and the average removal of ammonia nitrogen attained to 91%. But low C/N ratio was able to inhibit the activity of nitrifying bacteria and denitrifying bacteria. At that time, ammonia nitrogen removal rate declined sharply in the system.

Abrasive suspension jet is a new embranchment of abrasive jet. In the cutting process of this jet, the suspension concentration is constant, so the cutting quality is more stable. In this paper, a prediction model based on a back-propagation (BP) artificial neural network is presented for predicting the cutting depth generated by abrasive suspension jet. In the application of the BP neural network, the mean error of the output in the model training is 0.01, the relatively discrepancy is below 8.70%. The modeling method based on the BP neural network is much more convenient and exact compared with traditional methods, and can always achieve a much better prediction effect. It is verified with experiments to be reasonable and feasible, and it is the better foundation for the future study of abrasive suspension jet.

The profile of a single-pass milling can be assumed as a cosine curve. Therefore, the maximal depth model for single-pass milling is established which indicates the quantitative relationship between the AWJ single-pass milling depth and the milling parameters. The depth model of milled surface, which shows the effect of water pressure, standoff distance, lateral spacing, abrasive flow rate and the properties of the material on the AWJ milling depth, is established based on the maximal depth model for single-pass milling. The derived model is assessed by AWJ milling experiments. The results show that the milling depth increases with an increase in water pressure and standoff distance, and decreases with an increase in lateral spacing and traverse speed. The theoretical milling depth predicted by the mathematical model is good agreement with the experimental result.

Nurses in Department of Emergency Medicine face the emergency of special populations; they live in special circumstances and shoulder a special mission, under the dual stress of internal and external environment source. However, whether the stressors cause stress to nurses is depending on the individual needs of the environment and the results interacting with their own resources assessment, if the assessment that the stress source exceeds the individual's response resources, the stress will be generated, which threats to the physical and mental health. This article pointed out that the stress of nurses in Department of Emergency Medicine is mainly from the patient care and nursing, most nurses are in moderate stress levels, nurses mainly use problem-directed response method, rather than emotion-directed response method. The problem-directed response method is significant negative correlation to the stress and emotion-directed response method is significant positive correlation.

Two different methods, heat fusion process and solution infusion process had been used to synthesize a kind of phase change material (PCM) for latent heat thermal energy storage (LHTES). The composite was composed by steraric acid (SA) and montmorillonite (MMT). The morphology of the SA/MMT was characterized by scanning electron microscope (SEM) and FT-IR. The thermal performance and stability of the composite was characterized by differential thermal scanners (DSC) and heating store/release experiment. The FT-IR results demonstrated the PCMs and MMT combined by only physical bonds, SEM results showed that SA was intercalated in to MMT, and heat fusion process was contribute to the combination better than the other. The heating store/release experiment indicated that the stability of M-SA/MMT is better than S-SA/MMT.

Fe2O3/attapulgite(ATP) catalyst was successfully prepared for Fenton reaction to degrade an anion surfactant, sodium dodecyl benzene sulfonate(SDBS)，in an aqueous solution. BET, SEM, FT-IR were performed to characterize Fe2O3/ ATP catalyst. Comparative studies indicated that the SDBS degradation ratios were much higher in presence of Fe2O3/ATP and H2O2 than those in presence of Fe2O3/ATP or H2O2 only, which suggested that the Fe2O3/ATP-catalyzed Fenton-like reaction governed the SDBS removal process. It also can be seen that Fe2O3/ATP-catalyzed Fenton-like reaction almost has the same efficiency as homogeneous Fenton reaction, while the former can be reused and has no secondary pollutants.