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This paper proposes a new solution to recognize and segment adhering bars. A support vector machine (SVM) is constructed according to the feature vectors of training samples to recognize the adhesions type of bars. The geometric feature values and moment feature values based on Blob regions in the image are extracted, which are the input feature vectors of support vector machine. The trained classifier is used for identifying the adhesions type of bars in the image. Finally, classification and recognition are realized by support vector machine. The experimental result shows that the recognition accuracy based RBF kernel achieves 100%. The method is feasible and effective for the recognition and segmentation of the adhering bars.

Poly (1, 4–butanediol-citrate) elastomer (PBC) network polyester bioelastomer and high fluorescent CdTe/PBC nanocomposite bioelastomer were obtained by melting polycondensation with citric acid and monomer 1, 4-Butylene glycol as monomers. The structures and properties of the products were characterized by FTIR,DSC and fluorescent spectra, etc. It shows that the glass transition temperature of the PBC and CdTe/PBC were all lower than 0°C. Both PBC and CdTe/PBC were amorphous, transparent and highly flexible. They also have good hydrophilicity, degradation, and stability in dimensions. The biodegradation and water uptake of elastomers PBC and CdTe/PBC could be modulated by adjusting the monomers ratio and post-polymerization time. CdTe/PBC has high fluorescence and is expected to be useful in soft tissue engineering with the function of fluorescence biomarker.

Traditional reservoir scheduling guarantees efficient utilization of water resources and maximizes hydropower station operation efficiency. However it doesn’t consider the surrounding ecological environment demand. Ecological operation which is based on Traditional reservoir scheduling makes the reservoir achieve long-term, sustainable operation and reduce adverse impacts on the ecological environment. Xiangjiaba reservoir is the ties of the downstream of jinsha river and the Yangtze river which is located in jinsha river basin ecological sensitive area. So the completion of the Xiangjiaba reservoir must result in unhealthy ecological environment impact. With traditional genetic algorithm (GA) encoding complexity and being easy to fall into local convergence limitation, put forward a kind of improved convergence of genetic algorithm, the improved genetic algorithm with real number coding and fitness function which is converted into a nonlinear trigonometric function selection operator. Select the adaptive crossover probability and mutation probability adjust, in order to improve the convergence of the algorithm. RVA method is used to calculate the IHA index upper and lower threshold value and the upper and lower threshold could value as the constraint conditions of ecological scheduling objective function model. The results show that the improved genetic algorithm converge makes the global optimal solution ability stronger and faster; RVA method is suitable for the jinshajiang river and results are more comprehensive and more reasonable.

According to the characteristics of quality management and control in mold manufacturing process, this paper adopts SPC technology to solve the problem of mold production quality control. First of all, it expounded the mechanism of SPC to control the quality and take the machining process of the stamping die mold as an example, using statistical techniques to control the production process quality effectively; Secondly, by using control chart, whether the production process in a state of statistical control could be quickly determined, and the fixture loosening caused by abnormal production would be found and eliminated timely; Finally, through the process capability analysis, the level of process ability could be timely understood, and then two effective measures of improving production processes were put forward in order to reduce the feed rate and improve the process ability of workers.

In this paper, the development of Android-based student management software system to enable students to school, interaction with parents and the school has a new platform, on this basis, the promotion of the work process simple, efficient work, experience and scientific student management and quality, making schools reach new heights in the promotion of information technology.

Osteoarthritis (OA) is a degenerative joint disease that affects millions of people. Currently, there is no effective drug treatment for it. The purpose of this study is to investigate the chondroprotective effects of 5,7,3’,4’- tetramethoxyflavone in isolated cartilage chondrocytes cultured pre-treatment by IL-1β. The results showed that 5,7,3’,4’- tetramethoxyflavone could significantly down regulate the concentration of MMP-13, but up regulate the expression of TIMP-1, increase the proliferative activity of rat chondrocytes.

Modal analysis of crankshaft for two-stroke marine diesel engine is carried out on the block lanczos method. The finite element models of crankshaft is created in ANSYS. The crankshaft first 13 natural frequencies and mode shapes are shown as the result and lay the foundation for optimal design of the crankshaft and dynamic response.

The measurement of deformation of one diesel engine water cooling cylinder liner under free condition and assembly load case is carried out by V-INCOMETER testing system. The basic principles of radial deformation for this cylinder liner are obtained through the test data Fourier transformation. And the affect principles of cylinder liner original distort, which results from mechanical machining and heat treatment process, to the cylinder liner assembly deformation are carried out.

The bullwhip effect was caused by fuzzy demand among the enterprises. In order to reduce this effect, control theory was applied to solve the inventory in supply chain. Firstly, inventory control in supply chain and the bullwhip effect was researched. Secondly, a kind of proportional integral differential (PID) controller was developed for inventory control in a three-level supply chain, and the mathematical model of the PID controller for inventory control was presented. Finally, the results show that the PID controller can evidently alleviate the bullwhip effect and inventory fluctuations under the suitable combination of control gain.

Transverse and longitudinal velocity profiles on the xoy plane at z=0 and 5cm of side discharge jet under the action of crossflow and wave, velocity vectors on the xoy plane at z=0 and 5cm of side discharge jet under the action of wave and crossflow were measured by Micro ADV in this paper, respectively. Effects of wave and crossflow on velocity profiles and velocity vectors of side discharge jet were analyzed. The preliminary experimental results showed that transverse velocity profiles of side discharge jet centerline was less affected by crossflow and wave, however, effects on transverse and longitudinal velocities over the jet centerline were significant. Also, velocity vectors over of side discharge jet centerline were remarkably affected by wave and crossflow though velocity vectors on the jet centerline was less affected.

Effects of crossflow on flow field structures of central discharge were experimentally investigated in the flume. For the sake of comparing and analyzing, longitudinal velocity u, vertical velocity w and transverse velocity v in the near field of central discharge were measured by Micro ADV in stagnant and crossflow waters, respectively. Velocity vectors and velocity profiles on the planes of xoy, yoz and xoz were given. Effects of crossflow on three-dimensional flow structures of central discharge jet were analyzed. The experimental results showed that a phenomena of flow around object occurred when crossflow encountered central discharge jet, which bended jet trajectory downward. The maximum velocity of jet deviated the original location, the deviation depends on initial velocity at the discharge outlet and crossflow velocity.

Porcelain produce is a very high energy consumption process. According to total energy balance analysis, a variety of operating conditions are analyzed for effect of net energy consumption. One real porcelain plate produce process is introduced as the reference case. Operating conditions are defined in three parameters, which are air excess number, fuel distribution and solid mass ratio. A simplified model based on finite difference method (FDM) is solved to calculate axial gas and solid temperature profiles and net energy consumption. The net energy consumption in porcelain produce is calculated and discussed in quantity with three operating conditions above separately. Finally, it is concluded that net energy consumption is higher with bigger air excess number and solid mass ratio, while fuel distribution will have no influence on net energy consumption.

A simplified model is developed to predict axial gas and product temperatures along tunnel kiln with neglecting cooling zone. The plate tunnel kiln is simplified as a counter current heat exchanger. The model is solved by Finite Difference Method. Mass and energy balance equations of gas and solid in elements are derived, which consider convective and radiative heat transfer from gas to solid. Equations of elements are solved continuously from kiln ending to beginning, in which two boundary conditions are adiabatic combustion temperature and product sintering temperature in the last element. The results of a standard case and a fitting case are discussed and compared with data from an existed kiln. The standard case proves Lorenz’s Nusselt function is more accurate than infinite flat plate Nusselt function for convection description in plate tunnel kiln. The fitting case proves this simplified model is available.

The multi-body dynamics software EXCITE was used to simulate the marine diesel engine in this paper. The result shown the analysis of the crankshaft transient motion. The purpose provided a theoretical basis on the actual conditions of crankshaft vibration, deformation, stress distribution and improve the design of the crankshaft structure.

Developing the interior structures of polymer films is essential for creating novel functions of such films. This study investigates the effects of extension parameters and processing procedures on the super-structure of a polypropylene (PP) film. An biaxial extension device is also designed and fabricated to analyze the effects of annealing, extension temperature, extension rate and other parameters on the super-structures of PP films. Based on super-structure analyses, the relationships between extension parameters and film structures are determined, and an extension process that involves a second time stretching procedure is suggested. Experimental results indicate that void structures can be generated by biaxial extension at the interface between the crystalline and amorphous regions in a film. The mechanical strength of the film is also affected by stretching and become highly oriented. Although a low extension temperature can increase the number of void structures generated at a low extension ratio, structure sizes are dispersed. Additionally, voids with uniform size can be obtained when the film is stretched at a high temperature; however, it needs a high extension ratio to promote the formation of void structures. As for annealing treatment, when the annealing temperature increased, the size and quantity of the spherulites that were formed in films by annealing also increased, but these films tend to have similar sizes and numbers of void structures. Based on the experimental results, this study also describes how parameters influence the void structures of a PP film created during the extension process. Analysis results further demonstrate how extension parameters and processing procedures can be adjusted to improve the fabrication of PP films.

Currently, the research of marine natural gas engine is rare, while the combustion and emission characteristics of natural gas engine are affected greatly by the diesel ignition. This paper built a finite volume combustion model of diesel ignited natural gas engine by AVL FIRE software, and compared experimental data to prove the accuracy of the model, and numerical simulation of the combustion process that the diesel ignited natural gas was carried, analyzed the combustion and emission characteristics of natural gas engines, provided a theoretical basis for the further optimize and design of marine natural gas engine.

Taking into account the formation of thermal NO, the local balance method and Extended Zeldovich model were used in the paper to simulate the combustion and emission of a marine diesel engine with the AVL FIRE software and to verify the model. The effects of exhaust gas recirculation(EGR) ratios of 0%, 10%and 20% on combustion and emission of a diesel engine were discussed. The purpose of the paper provided a theoretical basis for the marine diesel engine upgrade of Chinese small and medium sized vessels, especially fishing vessel engine. The results show that with the increasing of EGR ratio,the cylinder pressure and combustion temperatures decreases and the peak of soot also shown a downward trend and more gentle, under the same load conditions.

Hysteresis cycle is one of the most important characteristics for magnetic materials.Preisach model is one of most used model in practice for modeling the hysteresis cycle. This paper deals with analytical modeling of hysteresis cycle using the powerful mathematical tools from LabVIEW. Preisach method is also modified by LabVIEW,this way of modeling is good for a fairly large number of entry points.

A type of composite resin substituted for cement slurry was developed for channelling and leakoff blockage in oil production and water injection wells of sandstone reservoirs in Huabei oilfields.Laboratory evaluation showed that the controlled reaction time was 3~8h at 40~110°C,the tensile strength of curing samples was 10.8 ~ 13.1 MPa, the compressive strength 13 ~ 87MPa, and the shear strength 9.2 ~ 28.9MPa.Any corrosion ratio in 10%HClNaOHNaCl was less than 1% at 100°C for 24 hours. Field application was successful and the pressure drop was less than 0.5MPa after shuting down for 30min.

Rainfall-runoff process plays an important role in hydrological cycle, and the study on the rainfall-runoff will provide foundation and basis for research on basin hydrology and flood forecasting. In this paper, the surface runoff and subsurface flow of wheat were observed in the laboratory by artificial rainfall, and analyzed the cumulated surface runoff and recession process of subsurface flow by regression analysis. In addition, the factors affected the runoff and response of soil moisture on the runoff coefficients was also discussed. Results showed that the rainfall intensity, soil coverage and slope had important influence on the surface runoff generation, and the surface runoff was observed when the total rainfall amount exceeded 32mm and 13mm for 5°and 15° slope respectively. The cumulative surface runoff could be expressed as a power function, which had higher determination coefficient R2 (0.92~0.999). The subsurface flow was only observed at the ripening period and wheat stubble treatment, and mainly affected by slope angle and initial soil moisture, whereas rainfall intensity showed little impact. The recession curve of subsurface flow can be described as a simple exponential expression or power function, which the determination coefficient was 0.88 and 0.94 by regression analysis, respectively. Moreover, there was an obvious threshold (approximately 30%) between the average initial soil moisture and runoff coefficients, which the runoff increased significantly as above the threshold.

Based on the comparison of several types of core formwork for large span hollow box girder, their structural characters, and assemble and disassemble in application is analysed to find that steel-wood core formwork is a better choice. Then the installation technique of steel-wood core formwork is discussed, including assemble, disassemble and anti-floating counter measures. The practice in some large span prestressed hollow box girder construction prove that steel-wood core formwork is a simple but effective core formwork construction technique with technological economic advantages because of its low cost, high working efficiency and better accuracy..

In this paper, we studied the large deformation and the small deformation method based on the research of the existing system of straightening theory and considered the characteristics of copper-clad steel to find a proper straightening scheme for this new composite materials. the advantages and disadvantages of the method are also compared. the straightening scheme for straightening effect and parameters is a decisive role before all kinds of straightening parameter determination. But at present, there isnt a equipment for the straightening of this new material.

Graphene nanosheets (GNSs) were prepared from flake natural graphite by oxidation, rapid expansion and ultrasonic treatment. The morphology, structure and electrochemical performance of GNSs as electrode materials for supercapacitors were systematically investigated via high-resolution transmission electron microscopy, X-ray diffraction, nitrogen adsorption and desorption isotherms and a variety of electrochemical testing techniques. The electrodes with freestanding GNSs prepared by coating method exhibited good rate capability and reversibility at high scan rates in electrochemical performances. GNS electrode with specific surface area of 243 m2 g1 maintained a stable specific capacitance of 200 F g1 under specific current of 0.1 A g1 for 500 cycles of charge/discharge.

The catalysts of Mn/TiO2, Fe/TiO2and Mn-Fe/TiO2prepared by coprecipitation method were investigated for low temperature selective catalytic reduction of NO with NH3. The catalytic activity and SO2resistance of these three catalysts were tested and the properties of the catalysts were characterized by using N2-BET, XRD, H2-TPR, NH3-TPD methods. It was found that the doping of iron reduced the catalytic activity of Mn/TiO2catalyst at low temperature and also has an adverse effect for its SO2resistance at the same time. The decrease of surface area , redox ability and surface acid sites caused by doping of iron might be the main reasons for poor performance of this catalyst.

In order to analyze the vibration performance of partially-filled liquid tank of ships, this paper takes the integration of measures including numerical simulation with finite element method and experimental verification with LMS vibration test and model analysis system of steel liquid tank under different liquid level conditions to study the fluid-structure interaction phenomenon. With the software of ADINA, the FEM model of the tank is developed and the model analysis which indicates the vibration modes and natural frequencies is completed. The simulation is compared with the experimental results which shows the natural frequency of the structure decreases with the level increases.

For take fully advantage of solar energy, the blue light conversion agent Ca0.6Sr0.4F2:Eu2+,Sm3+and the red light conversion agent CaS:Eu2+ were prepared in this paper. X-ray power diffraction (XRD) analysisconfirmed the phase formationof these light conversion agents.The luminescence intensity influencedby theconcentration of rare-earth-doped was discussed.Measuring results revealed thatthe blue and red agents canabsorb 375nm, 570nm radiations and emit 435nm, 640nmlight, respectively.The emitting spectra of them are matchedwith the absorption spectrum of chlorophyll. Light conversion film was prepared by introducing light conversion agents into polyethylene (PE). The trials of vegetables plantingin greenhouses that covered by conversion filmsindicate thatconversion films are able to enhance the availability of solar energy, and accelerate the ripening of vegetables, increase yield higher than 19.8%.

A monolithically integrated 10Gbps Vertical Cavity Surface Emitting Laser (VCSEL) current driver is implemented in SMIC 0.18μm RF CMOS technology. High current driving capability as well as agile switching speed is achieved by shunt peaking technique and cascade structure. Test result shows that the driver can drive the common anode VCSEL well working at 10Gbps, and delivers 9.7mA modulation current. With single 1.8V power supply, the core power consumption is 22.5mW and the die size is 800μm×500μm.

Additional power head with common milling machine.Two and a half axis CNC system are used for CNC grinding circular surface curve trajectory. The advantages of this processing method are: We can avoid the influence on processing of lead screw clearance because of changing the parts clamping position,effectively ensure the integrity of the great circle arc curve trajectory. Because of using digital control technology in grinding process is instantaneous automatic compensation of grinding wheel wear, the machining accuracy of parts in outline is improved, the machining error is decreased. it will effectively ensure the consistency of the large circle curve precision.This method has the effect of infer other things from one fact for CNC grinding of large circular arc curve parts. Broaden the scope of application of CNC technology and practical.

She's traditional costumes are both tangible and intangible cultural heritage, which do not only have a high aesthetic value, but also embody She's enduring beliefs and characters. However, with the economic development, social progress, especially technology updates and promotion of the traffic and media, the protective barrier of She's original cultural environment formed naturally by the geographical environment in the past have gradually disappeared. She's traditional culture, including costume culture, is rapidly weakening and lost. Based on the fieldwork of She ethnic minority areas in Zhejiang, Fujian, Jiangxi Provinces of the East China, as well as the costumes and their cultural background information, this article analyzes three aspects of She's ecological concepts shown in costumes, as "Harmony between Man and Nature" - the Understanding of Environment, "Make the best use of things" - the understanding of the finiteness of natural resources, and ¡°Survival of the Fittest¡± - the Relationship between Ecosystem and Costume. She's costumes reflect a natural living environment, as well as a mode of the production and technical status of the She people. At the meantime, they reflect the national consciousness, the religious conceptions, the social attitudes, and aesthetic tendencies state of the She people, which embody the mutual relations and interactions of natural ecosystems and human cultural ecosystem.

Based on the low-temperature and heavy oil reservoir of conventional injection well pattern separated two strains of oil degradation bacteria LC and JH which had satisfactory compatibleness with BaoLige oill field. In order to study the feasibility of enhancing oil recovery rate of the two strains, the experiment of huff and puff with 15 wells were carried out. The average concentration of bacteria increase from 4.7×102cells/ml to 8.1×106cells/ml. The average reduction of surface tension and viscosity is 33.1% and 31.9%. The accumulative total was 1163.2t. The ratio of input to output was 1:2.12. Microbial enhanced oil recovery can improve the low-temperature and heavy oil production status, which provide a effective method for the similar oil field.

The torque vibration derived from in-wheel-motor transmitted to body frame through suspension system without the absorption of mechanical transmission parts, then excited every body panel to shape the vehicle interior noise, which influenced the quality of the vehicle NVH. This paper aims to build an accurate suspension system simulation model to analyze the influence of suspension parts parameters to system vibration transmission property. Basis on a novel empirical model of rubber bushing, a multi-rigid suspension model and a multi-flexible suspension model had been established respectively. The vibration characteristics of two models were simulated, furthermore the swept-sine exciting vertical force signal on wheel contact point were input on the simulation models to find the difference between rigid and flexible model. The simulation results show that: the multi-flexible model can reflect the vibration characteristics of the suspension system more accurately in the high frequency range and so is it more applicable to the simulation analysis of vibration characteristics of in-wheel-motor electric vehicle suspension system.

Regional environmental performance assessment could measure the achievement of the environmental management effectively. It contributed to raise the level of government environmental management, and provided a basis for policy-making. On the basis of existing research, the paper adopted the PSR model and the thematic framework model to established Tianjin environmental performance assessment index system, and calculated the environmental performance level (EPI) of Tianjin from 2006 to 2010. The analysis showed that there is a substantial increase in environmental management of Tianjin on the aspects of environmental equality, efficiency of resource use, contamination control, and environmental infrastructure construction. The dominant indictors of EPI in Tianjin are urban ecosystem vitality, environmental equality, and efficiency of resource use. In order to improve the effectiveness of the EPA, the policy object system should be improved, and a complete data base should be established in the meantime of building and improving the system of regional environmental performance assessment.

Sunflower is an important oil crop, which is tolerant to water and salt stress and can be planted in vast areas of China. In our studies, four salinity levels of irrigation were used to irrigate one kind of sunflower (TO01244) under two irrigation low limits (65%FC and 75%FC). Plant growth, Soil salinity and leaf water status, yield and quality were researched. The results showed the means of plant heights under 2g/L, 3.5g/L and 5g/L irrigation water were 9.07%, 12.45% and 18.35% lower than the tap water respectively. In soil salinization the means of ECe increased by 271.13%, 173.22%, 132.98% and 4.73% respectively under irrigation water of four salinity levels. It can be found that the seed under 3.5g/L irrigation water had more linoleic acid, which is healthy to human and contribute to address the cardiovascnlar and cerebrovascular diseases as an important part of the sunflower oil. Facing the increasingly serious lack of fresh water resources, development and utilization of underground saline water would play an important role in agricultural production.

Minor structure of coal seam has a great influence on safe and economic coal mining. It has been noticed by more and more people that the application of 3D-seismic exploration technology to solve minor structures in coal mining. In this paper, geostatistics method was adopted to solve the relativity between multi-attitude and small structures, qualitative and quantitative predicate the mine small structures, which can improve the interpretation precision, and can promote the interpreter’s efficiency, then created more economic value.

This article provides an overview of building energy consumption in definition, role and significance of the database, the database development and database features, and propose a structural framework of building energy consumption database, then prospect outlook database study on building energy consumption.

Floating floor coverings are widely applied in ship structures. With regard to the laminated composite shells made up of floating floor coverings and cabin deck and based on ANSYS system, a dynamics analysis on structures of three different kinds of floating floors is performed using FEM built upon laminated shell elements. The influence of rockwool board in terms of thickness, density and elastic modulus on structure dynamic characteristics is discussed. The performances of vibration control of three different floating floor structures are compared. The FEM performs well in analyzing and calculating the vibration control characteristics of structures, the results of which offer certain reference to the design and research on cabin deck covered with floating floor coverings.

Studing the identification methods of sedimentary microfacies by the implement of self-organizing neural network model. Picking up the geometrical characteristic parameters and image characteristic parameters of the logging curves. Establishing the relationship of sedimentary microfacies patterns and well logging curves shapes by characteristic parameters. Developing the Sedimentary microfacies patterns identification system and applying it to 1000 wells of the southern area of Daqing Changyuan, the recognition rate can reach 90%, it can prove the validity of the method.

The static element in static deformation analysis was used to simulate the boundary condition of local structure when studying the modality of local structure. Using this method, the vibration modality of a beam system and the main engine lubricating oil tank were researched. The results show that the usage of static element in dynamic analysis can solve the vibration modality of local structure accurately, the difference ratio of first order frequency is less than 1/10000 in the beam model analysis, and the modal analysis of main engine lubrication oil tank has a good performance, which is a helpful base for the coupling vibration research in ship structure.

Mesh moving scheme is an important issue in many fluid-structure interaction problems. In this paper a new mesh motion technique is presented for the effective treatment of moving mesh. The entire deformation is imposed at each time step and the motion of the internal nodes is governed by a modified Laplace equation. Finite element method is adopted to solve the Laplace equation with elemental Jacobian-based stiffening technique. Nodal coordinates are updated by using the total nodal displacements and initial coordinates. The proposed scheme has been applied to several 2D and 3D test cases involving various mesh types with the mesh quality evaluated by an index called elemental aspect ratio. With these applications, it is demonstrated that the present method still preserves good mesh quality for long-term and large amplitude oscillations or deformations.

Linear expansion coefficient (CTE) is one of the important thermal parameters for materials, which has a great influence on the thermal deformation analyzing. Thermal Mechanical Analysis (TMA) is adopted to measure the CTE of pre-stretched aluminum alloy sheet 7050-T7451 in three vertical directions. The mathematical functions of CTE of aluminum alloy 7050-T7451 are established, which is with three directions and reflect the influence of the temperature. A comparison between the accurate CTE data and the CTE from reference is carried out .The reason of the CTE variation of aluminum 7050-T7451 with temperature also been explained qualitatively.

Aimed at the problem of lacking quantitative testing method for overspeed protection switch (OPS) in hoisting machinery during its regular inspection, the paper developed a testing instrument. The instrument consisted of a testing stand and a control system. The testing stand with a variable-frequency motor was used to install OPS. The control system include sensor, hardware circuit and software program, it can collect and process both speed signal and switching action signal of OPS and kept the speed value of switching action. The speed of switching action was just the quantitative testing value for OPS. By compared the testing value and the setting speed value determined by the standard, the qualification of OPS can be evaluated. Application result demonstrated that the testing instrument can test the speed value of switching action of OPS correctly. Thus, the instrument provided a quantitative method for inspectors to judge the qualification of OPS.

The chaotic dynamics of the unified chaotic system and the Rossler system with different fractional-order are studied in this paper. The research shows that the chaotic attractors can be found in the two systems while the orders of the systems are less than three. Asymptotic synchronization of response and drive systems is realized by active control through designing proper controller when system parameters are known. Theoretical analysis and simulation results demonstrate the effective of this method.

During the day, the air absorption of solar radiation is weaker than either of the temperature sensing element. At night, the infrared radiation of the air capacity and weaker than either of the temperature on the surface of the sensing element.The measured values of the components of any direct exposure to the air temperature during the day the system is higher than the actual temperature at night is lower than the actual temperature. To avoid this radiation error of temperature measurement devices to take effective radiation shielding measures. The thermometer screen is one of them, widely installed in the meteorological observation field.However, the weight of conventional thermometer screen, bulky and not suitable as a portable device and automotive equipment.Small temperature sensor anti-sunlight radiation shield is widely used in a variety of surface weather measurement occasions. This paper describes the developed by the Changchun Meteorological Instrument Research Institute, the temperature sensor anti-solar radiation shield (Model: DZQ03C-X) surface chemical composition.And detailed description of the DZQ03C-X and standard thermometer screen data of the temperature contrast in the same observation locations. Measurement of air temperatures of over 50 civil airports in China are using this DZQ03C-X temperature sensor anti-sunlight radiation shield.

A creep-fatigue life prediction model for P91 steel using Improved Elman Neural Network is founded based on the creep-fatigue experiment datas in this paper. The load keeping time is selected as the model input and the creep life or fatigue life as the output in the model. The prediction ability is validated from training the sample data. The results show the model has a very high prediction accuracy for training samples. But the model generalization ability is relatively weak, so the forecasting accuracy for test sample is lower than the training samples. Through increasing test sample number and decreasing the uncertain factors during the experiment in the follow-on working, the prediction accuracy and the model generalization ability will be increased.

The composites of ZnO/multi-wall carbon nanotubes (ZnO/MWCNTs) were efficiently synthesized via a simple hydrothermal method, and their capacitive properties were evaluated by cyclic voltammetry (CV) and galvanostatical charge/discharge tests, respectively. The resulting ZnO/ MWCNTs composite displayed net-like combined structure, in which the flower-like ZnO particles assembled by ZnO nanorods were entangled by the MWCNTs, Electrochemical investigation exhibited that the highest specific capacitance of 310 F g-1was obtained when the content of MWCNTs reached to 20%, compared to the ZnO (55 F g-1) and MWCNTs electrode (17 F g-1), showing the synergistic effect of ZnO and MWCNTs. The excellent net-like hybrid structure and the good conductivity of MWCNTs were considered to be responsible for its preferable electrochemical performances.

The magnetic field of the 168 kA aluminum reduction cell was calculated with the software ANSYS in our study. The calculated results showed that the magnetic line of the aluminum and electrolyte in cell formed a clockwise swirl. The X and Z magnetic intensity of aluminum was similar with the antisymmetric distribution and the magnetic intensity vector of aluminum reduced along the -Z axis. The X, Y and Z magnetic intensity in the electrolyte under the anode bottom was similar with the antisymmetric distribution along short axis (Y axis), long axis (X axis) and short axis (Y axis), respectively. The magnetic intensity vector of electrolyte in the gap of the anode was higher than that under the anode bottom. The X and Z magnetic intensity in the interface of melt was also similar with the antisymmetric distribution. The numerical simulations with ANSYS have the important references for project analysis and diagnose.

Shaft torsional vibration is critical to rotating machinery as internal combustion engines because it may cause disasters if we ignore its significance. This paper introduced a portable digital system we developed to derive torsional vibration signal by a Hall Effect transducer. By analyzing the signal in frequency domain, we furthered the study on the influence of torsional vibration in each order under various rotation rates to determine the torsional resonant frequency. Moreover, a comparison between several signal processing methods in frequency domain was investigated and an optimum method for the spectrum correction obtained subsequently. Experiments conducted by this portable digital system showed its good performance in shaft torsional vibration measurements, analysis and trouble diagnosis.

In order to obtain accurate load forecasting of coal-fired unit, a new algorithm based on Support Vector Machine (SVM) method is presented. This algorithm establishes a model to reflect the complicated relation between the load of coal-fired unit and the furnace flame Images. The trained SVM model is applied to a 660MW coal-fired unit to forecast the load with two groups of test samples. The results are compared with that of BP neural network model. It is shown the SVM model is more accurate than the BP NN model. The SVM method can satisfy the demand of engineering applications with the advantages of high forecasting accuracy and more generalized performance.

In order to improve the control effect of the Superheater Steam Temperature (SST) for a 300MW boiler unit, this paper presents an inverse compensation control scheme based on the expanded-structure neural network inverse models. The input and output variables of the expanded–structure neural network Inverse Dynamic Process Models （IDPMs） for the superheater system are determined from understanding of the boiler operating characteristics. Then, two neural network (NN) inverse controllers are designed with the IDPMs as on-line output compensators for the original cascade PID controllers in order to improve the control effect. Detailed simulation tests are carried out on the full-scope simulator of the given 300MW power unit. It is shown by tests that the control effects of the NN-compensated control on the SST are significantly improved compared with the case of the original cascade PID control scheme.

0.2mm thick titanium alloy sheet was butt-welded using micro impulse laser, influnce of the different processing parameter on the surface and cross-section morphology of welded joint was studied , testing the mechanical properties of joints. The result show that argon as a shielding gas, 0.2mm thick titanium alloy to the laser as heat source can be successful butt welding with process parameters of the pulse power 8.8W, pulse width 2.9ms, pulse frequency 7.0HZ, and forming a good welded appearance, the tensile strength and microhardness of welded joints was higher than the base metal. By the needle-like martensite α 'phase composition of the basket-like structure located in the center of the weld.