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A series of CeO2-SiO2composite nanoparticles with different cerium and silica (Ce/Si) mole ratios were synthesized via a coprecipitation method using cerium nitrate, tetraethylorthosilicate and ammonia as raw materials. X-ray diffraction (XRD), fourier transform infrared spectrology (FT-IR), thermogravimetry-differential scanning calorimetry (TG/DSC), transmission electron microscopy (TEM) and energy dispersive analysis of X-ray (EDAX) were used to characterize the CeO2-SiO2nanoparticles. With the increase of CeO2content, the crystal of CeO2grew up gradually and the average crystallite size of the CeO2decreased. There are Ce-O-Si bonds in the CeO2-SiO2composite nanoparticles. The particle size of the CeO2-SiO2composite nanoparticles with a Ce/Si mole ratio of 1 is about 20–30 nm. The dispersion stability of the CeO2-SiO2composite nanoparticles with a Ce/Si mole ratio of 1 was studied. It was found that cationic and nonionic surfactant could obviously affect the dispersion stability of suspension, but not the anion surfactant. A suspension with CeO2-SiO2composite nanoparticles at 0.1 wt% was added in 0.1 g/L cationic surfactant CTAB, and its pH value was adjusted within the range of 10-10.5. In this condition, the stable suspension without sedimentation time was successfully obtained.

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 spatial data of mine is analyzed and processed in this study. This research mainly include: calculate 3d coordinate of points of drill hole axis, calculate 3d coordinates of drill hole axis and stratum surface, insert virtual drill hole and calculate it's ostiole 3d coordinate, divide and number stratum of study area. Finally, this research design drill hole database and realize storage and management of mine geological data. This study also researched the classification and characteristics of 3d spatial data model. Based on distribution characteristics of mine data and application purpose of 3d model, this paper choose quasi tri-prism as basic volume to build 3d geological model. The improvement of data structure and modeling algorithm of quasi tri-prism make it can better adapt to the complex geological body modeling. This research study the expansion rule of triangle, modeling algorithm of quasi tri-prism and finally design geologic body database and realize storage and management of geological modeling data.

Experiments were conducted to study the corrosion behaviors of nickel-base alloy 625 under various temperature and oxygen fluxes, since severe corrosion always happens in landfill leachate treated by supercritical water oxidation. It indicates that under the condition of various oxygen fluxes, corrosion rates of nickel-base alloy 625 have similar variation, but at different temperature, such variation of corrosion rates can not be found, which implies oxygen fluxes may have more effects on corrosion rate than temperature. Meanwhile, oxide films of nickel-base alloy 625 changed obviously from low oxygen flux to high oxygen flux. The precipitation on the surfaces of alloys are confirmed as NiCrO4, which may form by the combination of dissolved Ni2+ and CrO42-.

The thermogravimetry - differential thermal analysis (TG-DTA) and theoretical analysis method of Coats-Redfern were employed to study the pyrolysis process and kinetics characteristics of mixture containing lime-mediated sewage sludge and gas ash, then sintering cup test the different proportion of mixture ball. It was found that the pyrolysis process of mixture from indoor temperature 1200°Ccould divided into 4 the weight loss stages, which brings a large number of heat and CaO, Fe2O3. Base on the results of Coats-Redfem integration method, the pyrolysis process of mixture under air atmosphere was belongs to two-class reaction. Sintering cup test show that lime-mediated sewage sludge and gas ash replacing part of the sintering ingredients is feasible.

In this study, it explores meaning and application of mutual aid education model using multiple regression analysis of statistics. It establishes multiple linear regression models and the matrix of teaching dynamic factors. It confirms that the emotional communication strategy model of foreign language teaching in the network environment mode in the Foreign Language Teaching not only can effectively improve the overall performance and collaborative communication skills of the students but also can emphasis on the three-dimensional cooperation meaning between teaching dynamic factors.

The use of low-cost and eco-friendly adsorbents has been investigated as an ideal alternative to the currentexpensive methods of removing arsenic from wastewater. Orange peel was collected from the local fields of orangetrees and converted into a low-cost adsorbent. The effects of solution pH, contact time, and concentration of orange peel have beenstudied. The maximum adsorption capacity calculated from the Langmuirisotherm model was 43.69 mg g-1,Based on the adsorption capacity, the pretreating orange peel was shown to be promising materials for adsorption removal ofarsenics from aqueous solutions.

It is so valuable that models merging of Delaunay triangulation are used widely in many applications. This paper researches the algorithm of models merging for Delaunay triangulation. A method for obtaining merged intersection lines and a algorithm for searching fast triangles in the extent of merging intersection lines are proposed, and whole process of models merging are expatiated detailedly. The algorithm is tested in experiments, and the result of experiment shows that this algorithm is very efficient.

Three-dimensional modelling technology was applied in this paper to construct models of complex geological body based on borehole data. The 3-D model of the rock, the orebody, the stratum, the fault and so on can be used to display the spatial form of these geological bodies and their spatial relationship, and to predict the trend of the deep ones. It brings geological working a new and multi-dimensional way compared with the traditional methods of confining 3-D information into2-D plane that losing the spatial information. This paper takes a mine area of China as an example to introduce the methods and workflow of the model making and the results of modelling are expressed based on the computer visualization technology.

The relationship between the SBS modifier types and asphalt components on the effect of modified asphalt properties was discussed in this paper. Higher block ratio, higher molecular weight and star-like structure of SBS can improve modified asphalt high temperature properties. Colloid content decrease leading the processing easier, result stability decline. Our research group invented a chemical titration combined with fluorescence microscopic analysis detection method monitoring SBS modifier dosage. This method applied in highway construction site, the effect is significant.

A torsional vibration mechanical model of the transmission system of a certain cetarpillar vehicle is established using mass distribution method. The torsional vibration model, containing multi-stage simple and compound planetary gear transmissions, fixed-axis transmission and power split/converge system, is established based on Lagrange Equation. Matlab is used for presenting and writing the according program of the modal analysis of free torsional vibration. The study is focused on the torsional vibration characteristic of the system on one specific working condition and the similarity in the inherent characteristics of the system on different working conditions.

A networked structural laboratories system for evaluating the seismic performance of large-scale structure systems by seamlessly integrating geographically distributed experimental and computational substructures into a single test is described in this paper. It consists of an independent network based communication platform and various applications. The effectiveness of the proposed system is demonstrated by remote hybrid tests of a six-span bridge system at the Hunan University, Harbin Institute of Technology, Tsinghua University, China and the University of Southern California, USA. Successful application shows the system enables the shared use of testing resources by integrating single structural laboratories into a powerful and networked laboratory with advanced capability.

Based on the pseudo-dynamic testing method and substructure technique, a remote hybrid dynamic testing method for asymmetric-plan buildings considering torsional effects is described. Besides, this paper presents the method and control principle for testing substructures in a single-story frame system under loading due to eccentric lateral responses of superstructure to earthquake motion. Several validated simulation tests of an asymmetric bridge system have been conducted successfully based on the remote testing platform NetSLab and the crossed-response of torsional and translational vibration of bridge structures under three representative ground motions was studied.

Spindle-like hollow mesoporous silica nanoparticles (spindle-like HMSNs) were fabricated via the template-sacrificial technique using hematite (Fe2O3) spindles as hard template, tetraethylorthosilicate (TEOS) as precursor and cetyltrimethyl ammonium bromide (CTAB) as the pore directing agent. The Fe2O3core and CTAB were selectively removed by hydrochoric acid aqueous solution etching. Transmission electron microscopy results revealed that spindle-like HMSNs with thickness of shell range from 8 to 47 nm were prepared by changing the concentration of the reactant. This methodology provides a facile and robust route for preparation of hollow mesoporous materials.

Prefabricated light-frame bamboo trusses are widely used in light-frame construction as the main vertical load-carrying elements in roof and floor systems because of their long-span capabilities, ease of use, versatile configuration, rapid installation, and competitive cost. This paper presents experimental studies on glue-laminated bamboo trusses. Six full-scale model trusses with two types of configuration and sizes were tested to failure under gradually increased vertical load. The failure of the model trusses was caused by lateral buckling of the top chords. Tests show that the modern glue-laminated bamboo trusses have adequate stiffness and strength.

At present, there are much more researches on the ordinary concrete composite slab, and that on the lightweight aggregate concrete composite slab are relatively less. In this paper, the shear-bond behavior of lightweight aggregate concrete composite slab, with the profiled steel sheet YX-76-344-688, which is commonly used in China is studied. Base on experiments, the cracks developing process and its regularities of distribution, the bonding and slipping between profiled sheeting and concrete, the relationship of load and mid-span deflection, ultimate bearing capacity etc. are studied.

This paper discusses the feasibility of the lime-mediated sewage sludge replace the fuels and flux as metallurgy ingredients, the influence of lime-mediated sewage sludge used in metallurgy sintering process to the sinter performance. The calorific value of the sludge was 4.67MJ/kg. The X-ray diffraction (XRD) showed that the main existing form of Calcium in the lime-mediated sewage sludge is CaCO3 at 550°C, and almost is CaO at 1100°C. This provided the basis to the sludge used as sintering ingredients. Sintering cup experiment results showed that Lime dry sludge have a positive impact on sintering, the sinter quality indexes are improved. When sludge ratio is 3.00%, the vertical sintering burning rate is 21.28mm/min, the yield is 72.62%, the utilization coefficient is 1.455T/m2•h, fuel consumption from 65.65kg/T fall to 59.16kg/T, then concluded that the flux and fuel ratio replaced by lime-mediated sewage sludge were 43.3%, 13.3% respectively.

According to the requirements, the design principles of web-based learning platform were presented, taking into account teaching and learning. Many instances were introduced to the instructional design. Modular structure was applied to design the system whose model was proposed. The prototype was built by Adobe Flash Professional, a timeline-based, object-oriented authoring tool. User interactivity, loading multimedia files and switching full-screen were achieved by Scripting languages. The result shows that it is informative, user-friendly and suitable for browsing on Internet.

Na-bentonite(NB)/poly(2-acrylamido-2-methylpropanesulfonicacid)(AMPS) composite were prepared as an adsorbent for the removal of Pb (Ⅱ) from aqueous solutions. Pb (II) adsorption on the composite is a fast process and follows well the pseudo-second-order kinetics. The FTIR spectra indicate NB and poly(AMPS) are simultaneously operating, and chelation should be the dominating adsorption mechanism.

This article describes the distribution characteristics of soil microbial in different vegetable types in artificial wetland restoration. The results show that quantity of microbial had a significant increase before and after restoration. The value of Polygonum hydropiper sample was largest. The sequence of increase was Polygonum hydropiper,Phragmites communis Trin,Typha angustifolia and bare land; Referring to the change of three types of microorganisms, bacteria enhance 2.16 times largest; Meanwhile fungi go up 1.11 times least. The range of microbial diversity value before restoration is 0.2437-0.7633, and after is 0.1163-0.4069;Bacteria amount had significant correlation with TN.

This paper reports NiO/γ-Al2O3 photocatalysts have well photocatalytic degradation capacity. NiO/γ-Al2O3 catalysts were prepared by Ni(NO3)2•6H2O,γ-Al2O3 with the impregnation method, and treated by the plasma-assisted, which were characterized by XRD, FT-IR,BET and other analytical tools. The influence factors of methyl orange degradation efficiency were analyzed under the 250W high-pressure mercury lamp.

Na-bentonite/poly AMPS composite were prepared as an adsorbent for the removal of Pb (Ⅱ) from aqueous solutions. Pb (Ⅱ) adsorption experiments show the optimum pH and the bentonite content are pH 4.0 and 5g Na-bentonite /10g AMPS, respectively. Experimental data were described by Langmuir and Freundlih isotherms, and the correlation coefficient (R2) shows that the adsorption follows the Freundlich adsorption model.

It analyzes in detail the influence factor of voltage of proton exchange membrane fuel cell (PEMFC) when load changes sudden by the lumped modeling developed. The partial pressure of hydrogen and oxygen can be expressed using the ideal gas law equation, and ohmic loss, activation loss and concentration losses are accounted, it is assumed that both operating factor of hydrogen and mixture ratio of hydrogen and oxygen are constant. Based on the above, the dynamic lumped model of PEMFC is proposed. The correctness of model is verified by comparing the experiment data with simulation result of model. The research about lumped model has important significance to the research of the distributed generation network in various performances.

Combined with the field survey data, this paper firstly analyzed the production status of an engine assembly plant, identified the problems reduced production efficiency; and then proposed re-introduction of Kanban production system to help enterprises overcome the present impasse. This paper focused on describing the import plan, the overall design and executing conditions of Kanban production system，which to be a reference example for other enterprises who want to adopt Kanban production system

With the development of low carbon economy, the low carbon of logistics industry is imperative. In order to carry out the low carbon of enterprises’ economy, the low carbon concept of logistics systems are put forward during planning stage. Combined traditional SLP layout method with the low consumption, low emission and low pollution of low logistics, a SLP improvement method based on the low carbon is given in this article. By using the improvement method and combining with the actual layout of factory, the layout of factory workshop is analyzed and designed again. As a result, the logistics condition of factory is improved greatly, its comprehensive efficiency is increased, its overall material flow rate is reduced, and its energy consumption and waste disposal is significantly slow down

To kanban production system of a engine assembly shop as the empirical study, the simulation model of the Kanban production system about designing, running and optimizing are elaborated, which is on the basis of understanding basic theory of Kanban production system. More importantly, using optimization, researched further the effects of different value of safety factor and coefficient of variation of Kanban production system on the impact of the results, and determined the optimal combined scheme.

Novel bio-based composites were developed from maleate castor oil (MACO) and lignin through free radical initiated copolymerization between MACO and diluent monomer styrene(St). The morphology and structure of the composites were characterized by Fourier transform infrared spectroscope (FTIR) and scanning electron microscope (SEM). The mechanical and thermal behaviors of the composites were investigated, which showed the incorporation of a little of lignin in the castor oil based polymer can enhance the tensile properties of the matrix polymer greatly. This work provides a facile route to prepare bio-based composite materials from castor oil and lignin and can be extended to prepare other bio-based materials from reproducible resources.

To provide essential data for an efficient utilization of vitrified bottom ash slag, the thermodynamic properties of the CaO-Al2O3-SiO2-FeOx-MgO-Na2O oxide system is highly required. As one of the related oxide subsystems, the equilibrium phase relations and liquidus of CaO-SiO2-FeOx-Al2O3 system is of great significance to interpret and predict the thermodynamic properties in multi-component oxide systems. In this paper, phase diagrams for the CaO-Al2O3-FeOx and SiO2-Al2O3-FeOx systems were calculated by using CALPHAD method with FactSage program. The liquid phase area changed with changing oxygen partial pressure from 1Pa to 10-3Pa and temperature from 1673K to 1773K. The equilibrium phase relations of CaO-Al2O3-FeOx and SiO2-Al2O3-FeOx systems were discussed.

For complex pavements, there are circular, elliptic and rectangular shape vehicle loads under different conditions. Treatment way of vehicle loads is studied with conformal mapping method in this paper. Approach for transformation them to uniform circular shape is also researched. Terminal goal is enable the road engineers to accommodate changes of vehicle loads in their used way to pavement design which using static loads with uniform vertical pressure distribution without any more attached difficult.

Current logistics status of a company’s flywheel workshop has been analyzed, according to such main principles of enterprise logistics optimization as avoid roundabout and backflow of materials, minimum distance, manpower saving, using gravity, systematization and so on, it optimizes logistics of the workshop. Comparing the data of optimization before and after, it is obvious that the process routes have been improved, logistics is smooth, transportation distance has been reduced, production cycle is shorter, production efficiency of the workshop has been greatly improved and it achieved distinct improvement.

A heat transfer model of PEMFC is developed that captures dynamic behavior for control purposes in this paper. According to the law of conservation of energy, by analyzing in detail the heat source, considering the heat of electrochemistry, activation polarization heat and the heat loss of air forced convection etc., the dynamic heat model of PEMFC is established. Among all influential factors of fuel cell temperature, current density is one of the most important influence factors. Finally, by comparing the response results temperature with the current density changes between simulation and experiments, the results s are consistent. The model in this article has an important guiding significance for the design of fuel cell. For example, the working temperature of fuel cell can keep up stability by controlling cooling medium flow rate etc.

A model of PEMFC is developed that captures dynamic behavior for control purposes. It analyzes in detail the influence factor of voltage of PEMFC. The model is mathematically simple, and accounts for the essential phenomena that influence the PEMFC performance. The partial pressure of hydrogen and oxygen can be found using the laplace transform and differential form of ideal gas state equation. It is assumed that the mixture ratio of hydrogen and oxygen in the reaction are constant, the dynamic lumped model of PEMFC is proposed. The model is verified by comparing the experiment data with simulation result of model. On the basis of the dynamic model, the partial pressure and voltage are analyzed when when the load current suddenly changes.The research about lumped model has important significance to the research of the distributed generation network in various performances and has guiding meaning to the structure design of fuel cell.

It studies the balance problems of cycle time of a flywheel production line in this paper. Based on the working time measured using lean manufacturing (LP) methods, the bottleneck processes of production line are found by simulating with software Witness, which is improved by using production cycle balancing method. Comparing the relevant parameters before and after the production line balance,the improvement results of production line are significant and the production efficiency can be improved.

This paper statistically analyzes the large coal mine gas accidents in China since 2006, and points out that explosion and gas outburst are the main reasons of gas accident, and focus in the future should be put on those serious accidents caused by gas explosion. Death toll of large gas accidents in 2009 is equal to that in 2008, which illustrates the importance of safety input in order to further improve the coal mine safety situation in China. In order to raise consciousness of enterprises on safety input, this paper puts forward the idea of integrating the value of life casualties’ loss into the analysis of loss in coal mine accidents and builds an optimization model of optimization of safety input based on maximization of economic benefit and thorough analysis of safety input, economic losses caused by coal mine accidents and loss of human life. With reference to foreign practices and related research, the value of life for each person is finally set from 5 million to 30 million. Finally it is proved through case study that the consideration of value of life is vital to improve the level of safety input and reduce mortality. Since 2005, the number of deaths caused by gas accident many years occupied the first coal mine accident in major categories. Therefore, the gas accident occurred in recent year statistical analysis, to take specific measures for improving the level of China's coal mine safety is important.