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The ProENGINEER software is used to build a geometric model for the whole process cavity and internal structure and conduct the internal dynamic simulation of cavity with different diffusion temperatures of 1,000°C, 1,050°C, 1,100°C and 1,150°C, and different diffusion time of 5 min, 10 min, 15 min and 20 min. Analyze the process control indexes by combining with specific thermal diffusion test, and study the relationship between hydrodynamic parameters and diffusion uniformity, Comprehensively investigate the effects of the diffusion temperature and diffusion time on doping, achieving the requirements of impurity distribution in materials.

Cavitation erosion (CE) behavior of 2205 duplex stainless steel (DSS) under high pressure was investigated by using water jet apparatus, which designed according to ASTM G134-95. The effects of the nozzle diameter and target distance on mass loss were analyzed. The CE behavior of 2205 DSS was evaluated by cumulative mass loss with time, and the incubation period and the CE rate were calculated by fitting results. From the scanning electron microscope (SEM) observation, it is found that the surface of 2205 DSS was damaged slightly during the CE incubation period and eroded dramatically in the accelaration stage. The energy dispersive spectrometer (EDS) results showed that the Ni content in the erosion area appeared obviously lower in comparison with the non-erosion area. Meanwhile, the content of Ni in ferrite was also detected to be clearly lower than in austenite with electron back scattered diffraction (EBSD) and EDS mapping techniques. Therefore, it could be concluded that CE take place selectively on the 2205 DSS surface, the damages were initiated and progressed in ferrite phase prior to in austenite phase.

In this paper, A method of co-simulation is used to analysis the kinematics and dynamics property of the sewing machine mechanism, using Pro/E established the needles and pick line simplified model, and then the model is simulated in Adams, obtained the kinematics and the dynamics property,such as needle movement track and velocity and acceleration curve, and selects the line of bearing end under different drawing reaction force, torque changes curve. Taking great advantage of Pro/ E and ADAMS, the mechanism motion curves and value obtained through this method to verified the feasibility and reliability of the design.

The character of the Fly ash of Circulating Fluidized Bed Boiler (CFB Fly ash) is greatly different from that of Pulverized coal furnace for its high unburned carbon. In order to make effective use of CFB Fly ash in concrete, carbon content was decreased by simulated fluidized bed combustion in laboratory and a series of concerned experiments were carried out on CFB Fly ash. The experimental results indicate that CFB modification Fly ash is possible to be used in concrete to partially replaced cement. It is a valuable reference for CFB Fly ash technical engineers.

This paper describes the design of an embedded intelligent analyzer for vehicle fault detection based on ARM. Using high performance embedded ARM as the core, taking Linux as the operating system, and with the embedded vehicle fault diagnosis expert system, this analyzer has various bus interfaces. It can be used conveniently for detecting vehicle faults immediately.

Based on the walking mechanism and the researching method for the serial-parallel mechanism, one multi-sports mode wheel-leg mobile robot is proposed in this paper; Firstly, the serial mechanism model of one leg is constructed, and the method for constructing the kinematic model of the single leg mechanism is studied; Secondly, based on the study of the single leg mechanism, the kinematic model of the parallel mechanism of the multi-sports mode wheel-leg robot is further constructed when the robot is in the support state; Finally, based on the methods and theories discussed above, the experimental prototype mobile robot is constructed, so feasibility of the proposed method is verified.

With the market competition increasing of power enterprises, strengthen the supply chain management become more and more important. It has an important guiding significance to enhance the level and effect of supply chain management that study the issue of supply chain management and evaluation by using supply chain management maturity (SCMM). This paper makes a combination of supply chain management methods and the particularity of power enterprises, and using the theory of SCMM, to build a SCMM level evaluation system from three aspects of logistics, information flow and capital flow. On this basis, we use a method that combines set-valued statistics with triangular fuzzy number Lo evaluate. Finally, it proves that the SCMM level evaluation system is scientific and rational through examples study.

In this paper, a new multi-motion pattern bionic robot was proposed by us. Though we analyzed the robot as a hybrid series-parallel mechanism, the robot is a wheeled-legged robot, and a new methods for constructing the kinematic model of the special four-bar mechanism of the robot very quickly and efficiently was introduced. Then, the kinematic model of the parallel mechanism of the multi-motion mode bionic robot was constructed when the robot was in the stance phase.

The purpose of this work is to prepare a low-cost biosorbent,Porous Magnetic/Chitosan Resin(MCR), and determine the ability of this biosorbent to removing Ni (II) ion from aqueous medium. Both kinetics and thermodynamic parameters of the adsorption process were also estimated. The thermodynamic parameters indicated an exothermic spontaneous process and the kinetics followed the second-order adsorption process.

A high-performance microcavity sensor with a port connected with a waveguide directly is investigated numerically. With input light and output light transmitting in the same waveguide, we propose a robust coupling mechanism. For a circular microcavity with a diameter of 20μm and a refractive index of 1.45, our numerical results show that the coupled modes are excited and more than 5×104 Q-factor is calculated from the transmission spectrum. Dramatically, the spectrum shows a fano-shape resonance at specific wavelength which is useful for high-precision optical sensing on the order of 10-5.

Taking a type excavator as an example, three-dimensional model was established using CATIA software, using the ADAMS software to the dynamic simulation analysis; get the movable arm hinged point load curve. The maximum load into ANSYS finite element analysis was carried out on the derrick structure, derived from ANSYS MNF file imports ADAMS to get the coupled model and dynamics analysis, get the time-varying curve working device. Results show that the coupled model is more in line with the actual, work can be more fairly reflect device performance, can provide the basis for further optimization of the structure of excavator.

The characterization of guide way joint surface micro-topography is very important for the study of real guide way joint surface. Based on fractal theory, fractal characteristics of rough surface are investigated. The 3D surface topography of specimen which is closed to machine tool guide way both in material and processing condition is obtained by atomic force microscope (AFM). The structure function method is employed to gain fractal dimension and the analysis of fractal characteristics. The results show that meet the processing conditions, the guide way joint surface in the region which can scale show good linear relationship and has obvious fractal.

This paper presents a selective SVM ensemble based on clustering analysis to localize the faults of analogue circuits with small samples. The method overcomes disadvantages of single SVM and greatly improves the generation ability for problems with small samples. In the end of paper, simulation experiments on a CTSV filter circuit are carried out. Experimental results demonstrate that selective SVM ensemble based on clustering algorithm is a more effective method to fault diagnosis with small samples than single SVM.

An ideal anodes used for the electrochemical oxidation of organic wastewater should have excellent activity, stability and high oxygen evolution potential. In this paper the CNT (Carbon Nanotubes)-PbO2 films electrodeposited on stainless steel were prepared. X-ray diffraction (XRD) patterns and SEM images indicated that CNT particles and PbO2 were able to achieve co-deposit and the composite CNT-PbO2 films were compact. The cyclic voltammograms of the CNT-PbO2 films studied in 0.5M H2SO4 at a scan rate of 100 mV/s showed that the CNT-PbO2 film has high electrochemical stability. The results of wastewater treatment indicated that the CNT-PbO2 anodes have excellent activity in ammonia wastewater treatment.

Effects of injection molding parameters on the residual fiber length and the mechanical properties of LFRT-PP composites, which were prepared by self-designed impregnating molding, were investigated by orthogonal experimental design method. The results showed: the length of residual glass fiber increased with the length of LFRT pellets and decreased with screw speed. The former had more remarkable impact. The mechanical properties of composites were greatly affected by the temperature of barrel. The lower temperature was benefit for obtaining the higher properties. The length of residual glass fiber was not directly corresponding with the mechanical properties. To obtain the highest mechanical properties of composites, the optimal parameter levels were: the length of pellets 10mm, the temperature of barrel 220°C, the screw speed 75 rpm and the injection pressure 80 MPa.

In order to solve the problem of field fault detection for engineering vehicle, we introduce a new networked portable fault diagnostic system based on PDA. The architecture of the system is presented. The system consists of dual-tier architecture. The first tier server is based on the related technical database of engineering vehicles, and the second tier one is the technical information database downloaded from the manufactures technical resources with PDA as the terminal for maintenance technician. The system function includes information query, user interaction, data downloading and uploading as well as network communication. The software platform is composed of Microsoft SQL Server Compact (SQL CE) database, application software on PDA and computer. Meanwhile the hardware platform is mainly composed of desktop PC or dedicated server, PDA mounted with cradle, data acquisition card as well as PCMCIA network adapter and so on. Both wireless communication and USB interface are adopted in the system. It has been used in many military units. The application demonstrates that the PDA-based networked fault diagnosis system of vehicles is beneficial to data query, fault elimination and repair capability of engineering vehicles.

A 3D finite element model was established to simulate the top surface temperature evolution of Ti45Al8Nb (at.%) alloy ingot under the effect of plasma arc behavior during plasma arc cold hearth melting (PAM) process. According to the model, the top surface temperature distribution and its evolution was analyzed under different heat flux densities. Simulation results show that the position of maximum top surface temperature changes with plasma arc motion, and always located in the plasma arc heating regional center, and it increases first with time elapse and then decreases in the rest of time within one cycle. The results also show that the top surface temperature is increased with the increase in heat flux densities, but the extent is not significant, and meanwhile the temperature distribution is more non-uniform and temperature gradient is greater with the increase in heat flux densities.

The crosslinked poly(methylmethacrylate) (PMMA) heat-sensitive nanocapsules were prepared by emulsion polymerization, in which Triton X-100 was used as an emulsifier and unsaturated hyperbranched poly(amide-ester) (UHBP) as a crosslinker. The effects of three determinative process parameters on the particle size distributions, glass transition temperatures(Tgs) and heat sensitive color-developing properties of nanocapsules were investigated in detail. As a result, the mean size of nanocapsules became smaller and their particle size distribution became narrower with the increase in emulsifying rate. The Tg of nanocapsules was 123.8°C with the emulsifier content being 0.6%. The color-developing absorbency was the highest with the crosslinker content being 6.0 %.

To investigate on highways of the semiarid area in China, summarizes that Highway Greening characteristics of the Semiarid Region are, analyzes the particularity of highway greening of the semiarid area and puts forward current problems and design principles of highway landscaping and irrigation of the semiarid area. It sums up the green protection measures, irrigation measures and engineering safeguards for solutions.

This article describes an software architecture and functional design of the meteorological information system based on Web technology, which embedded a smart hydropower plant system ,introduces an actual construction of a hydroelectric power plant meteorological information system of a smart hydropower plant. At the same time, explore the prospects and development direction of the meteorological information system smart hydropower plant.

Fault model and detection in etch process is one of the key point problem in Semiconductor Wafer Fabrication System. A well developed fault modeling and detecting method in this process contributes greatly to the yield and Overall Equipment Effectiveness. The etch process has its unique characteristics like abundant variables, huge collections of data and nonlinearity in most batch processes; hence it poses difficulties to traditional modeling methods. In order to demonstrate the detail characteristic of faults in etch process, an improved fault transfer table based fault modeling method is proposed in this paper. The main idea of this method is to illustrate the indications, faults and their relationships in logical equations. The experimental results of an industrial example show that it has advantages such as simple expression and high capacity of information, and therefore is especially useful for the fault detection and diagnosis of semiconductor manufacturing.

Effects of temperature (conventional (25°С) vs. mesophilic (35°С) vs. thermophilic (55°С)) on activated sludge properties (production and composition of EPS and interaction potential) and their roles in bioflocculation and settling were studied using well-controlled sequencing batch reactors fed with a synthetic wastewater comprised of glucose and inorganic nutrients. The results show that thermophilic sludge had a poorer bioflocculation ability and settleability than that of conventional and mesophilic sludge. Analysis of extracellular polymeric substances (EPS) indicates that thermophilic sludge had a higher level of loosely bound EPS (LB-EPS) content than that of conventional and mesophilic sludge. The LB-EPS content of thermophilic sludge was ten times more than TB-EPS content of it, which coincided with higher supernatant turbidity. Therefore, the worse bioflocculation and settling ability of thermophilic sludge could be explained from the perspective of LB-EPS. Calculating the interaction energy of three kinds of sludge, the interaction barrier of thermophilic sludge disappeared which meant the attractive potential was dominant in the system. Thus, it should have led to a better flocculation, which did not agree with the actual performance. It indicates that the worse bioflocculation and settling ability of thermophilic sludge could be explained from the perspective of interaction energy.

This paper presents a 3D FEM computation model for a power transformer structure, where several conductor disks in series are used to constitute each winding, this is different from the normal cylindrical shape models. Base on such model the simulated ohmic losses in windings can be the same as that of measured. Then the stray magnetic fields in the transformer, the eddy losses in tank, the effect of magnetic shunts on tank losses are all studied, the calculated decrease of eddy losses in tank when magnetic shunts are properly used is compared with that of measured, they are coincide in some degree, which imply this model is reasonable for the simulation

A 3D model is given for a three phase three limbs transformer, based on finite element method, the magnetic fields distribution are simulated, losses in metallic structure such as clamps, flitch plates and oil tank are analysed, the influence of winding clamp’s shapes on these losses are studied.

The AB2 type hyperbranched poly(amine ester) (HBPAE) can be used as adsorbent to adsorb nitrite from aqueous solution due to a large number of terminal hydroxyl groups, where the hydrogen-bonds could formed between OH and NO2-. However, the hydrophilic properties of HBPAE limited their utility in the application because of the difficulties in removing adsorbent from nitrite solution after the adsorption was finished. The hydrophilic properties of the HBPAE were changed by means of end capping method, where the trichloroctadecylsilan (OTS) was adopted as the hydrophobic alkyl chains. The modified HBPAE by OTS can be separated from the aqueous solution. The adsorption kinetics of nitrite from aqueous solutions onto modified HBPAE was investigated to show the pseudo-first-order kinetic mechanism. The equilibrium adsorption data were found to be well fitted by Freundlich isotherm equation.

From the practical point of view, the paper researches the optimal and dynamic distribution optimization scheduling model, and explores the dynamic scheduling strategies of optimal scheduling model and GIS. At the same time, it also gives the formal distribution definition of the distribution optimization scheduling model, studies the model algorithm and analyzes performance of algorithm by means of examples. Finally, the article also designs and implements a logistics distribution allocation dispatching prototype system according to business needs of logistics distribution companies.

The exploitation of Tube Hydro-forming (THF) experimental device plays an important role on the development of THF technology. In this paper, some representative experimental devices are introduced, including device with outside pressure source and device with internal pressure source. The working principle, technical characteristics, sealing mode and pressurization way are compared and analyzed. Meanwhile, the development trend in exploitation of the test device is envisioned.

To evaluate the sustainable development level of construction in Shandong, China, the model was built by principal component analysis method. Meanwhile, Analytic Hierarchy Process (AHP) and basic rules of statistics were fully used to set up the index system. The data from 2007 to 2009 were processed by SPSS software, through calculation, the degree of sustainable development were shown intuitively.

In this article, graft copolymerization of styrene (St) onto cassava starch via potassium diperiodatonickelate (IV)–starch redox system as an initiator was investigated in an alkaline medium. The effects of reaction variables were investigated, and the grafting conditions were optimized. The equation of the polymerization rate were obtained, Rp= k•C1.02 (St)•C0.53 (Ni（IV）). The graft copolymer was characterized with Fourier-transform infrared spectra analysis (FTIR) and scanning electron microscopy (SEM). FTIR spectra indicated the presence of PSt-g-starch copolymer. SEM micrographs also showed PSt adhering on the starch.

Base on three dimension (3D) finite element method (FEM), a electromagnetic model for a power distribution transformer is established. The core loss, stray losses in structural components are simulated, the effects of magnetic shunts on tank losses are studied, then compared with experiments. The core loss, the decrease of stray losses when using magnetic shunts are in accordance with experiments. Studies indicate that tank loss is the most impartment part of stray losses in this model, magnetic shunts are effective in reducing stray losses.