Computer Science and Engineering Technology (CSET2015), Medical Science and Biological Engineering (MSBE2015)

The following sections are included:

• Editorial
• Contents

DSP (XC2267) is the main control chip which does the increment PI algorithms and realizes the voltage and current double closed-loop control. Three-phase thyristor rectifier method based on the phase self-adjusting of FPGA is proposed. A method for sweptfrequency start circuit is designed to implement the transition between the high-power and low-power. The invert system uses the compound control of improved PWM and frequency phase lock to improve the control accuracy and efficiency. Lastly, by using bench, the circuit is tested and the feasibility and effectiveness of the whole system are verified.

To research the development of hybrid powertrain and control strategy, the simulation model including its core components is established for a new type of series-parallel hybrid electric vehicle system; and the fuzzy logic control strategy is developed using the fuzzy control method, which is embedded into the vehicle model to achieve simulation analysis. The result demonstrates that the vehicle model can satisfy the requirements of speed and acceleration performance under the simulation conditions, and the fuzzy logic control strategy can allocate the power between engine and the traction motor reasonably according to the working condition , and the fuel economy is improved by 11.02% compared with the control strategy with motor assist, which proves the accuracy and efficiency of the simulation model and control strategy.

To solve the problem of low product design efficiency caused by information search difficulties under the environment of information explosion, product genes research was doneon the basis of analogy with biological genetic engineering ideas. The connotation of product genes was redefined, which is more consistent with biological genes so that it is benefit for deeper study on product genes drawing on biological genetic engineering advanced technology. Operating technologies of product genes were summarized. Based on this, a product gene based approach for conceptual design of mechanical products was presented. Take corn combine harvest stalks device as an example, the design approach was verified, and the results show that the conceptual design method based on product genes greatly improved the design efficiency and shortened the product design cycle.

To control thermal deformation of precision machine tool structure, a supply power capacity design method of Active Heat Exchanger (AHE) is provided in this paper. The supply power capacity can be adjusted through changing the inlet temperature and flow rate of coolant, some simulations have been completed, including the inlet temperature, flow rate of coolant and layout of the coolant channels. The simulating results illustrate that this method can be used to control and improve the thermal deformation of precision machine structure.

The bearing is a key part of the rotary liner hanger in the drilling engineering of ultradeep wells and complex wells. However, the load capacity and service life of bearings are always the primary bottlenecks for the development of rotary liner cementing technology. The main failure form of rotary liner hanger bearing is roller end breakage. This paper put forward the improved modification methods of tapered roller to amend the classical modification theory. The improved methods were applied to thrust tapered roller of rotary liner hanger bearing and were analyzed by FEM. The analyzing result show that the improved modification methods are effective and accurate and the improved logarithmic generatrix is the best modification scheme of hanger bearing roller. The research result can provide a practical and theoretical basis for tapered roller bearings in ultra-deep well drilling engineering.

In order to improve the operating efficiency and quality of the plug seedlings, a machine for seedling transplanting and separating with extensibility was developed. This machine is composed of end effectors and transplanting seedling mechanism. In the paper, we designed seedling transplanting and separating mechanism and analyzed the force on the machine. We adopted the upper two-dimensional X-Z mobile platform for initial position adjustment, and lower two-dimensional X-Y mobile platform for column and row adjustment. The end effectors take or put off the seedlings through cam mechanism. The simulation results of force analysis show that the maximum stress and the maximum error of ball screw are 3.40⁺⁰⁷ N/m² and 0.82mm respectively. The maximum stress and the maximum error of the finger are respectively 3.90⁺⁰⁷ N/m² and 4.1mm, which can meet the seedling transplanting and separating requirements.

Prediction of vibration in steam turbine is beneficial for predictive maintenance. Based on vibration data in a practical steam turbine shafting, this work presents prediction of vibration parameters using support vector machine (SVM). Firstly, principle of SVM in parameter prediction is introduced. Secondly, the vibration data in the steam turbine is presented and the preprocessing is applied to get the deterioration trend. Finally, the prediction of the vibration is carried out with SVM, and the accuracy of the prediction is estimated. The results show that high accuracy is obtained with the proposed model.

Virtual design is an essential part of the folding carton design in packaging combination. In order to achieve the ideal result of the design, packing box type from 2D to 3D interface changes, in the process of transformation, by correction and adjustment of design parameters. In this paper, we analyzed the combination of triangles and non-triangular packaging carton design and molding, and given the appropriate combination of shaping design examples. In view of the virtual design application in the folding cartons combination, to find the different shapes of the structure of the forming and packing assembly in stack tile forming method of virtual design. According to the influence of the packaging combination modeling show, production and cost estimates, find out the optimal design. Not only for the convenience of the designer create a more beautiful and practical folding carton packing, but also to shorten production time packaging design, to save the cost of packaging design production, to reduce unnecessary loss of time, thereby to improve the production efficiency.

The wear of agricultural machinery caused serious economic losses, environmental damage and resources consumption. The working conditions, wear sources, wear failure phenomenon and reasons, anti-wear and protective measures of agricultural machinery were studied by statistical method. The results put forward the reasonable choice method for wear-resistant materials, lubrication condition, surface treatment, anti-wear optimization structural design in the operation and maintenance of agricultural machinery. The research provides the scientific basis for solving tribological design and improving the service life of agricultural machinery.

Aiming at the nonlinear and non-stationary characteristics of rolling bearing fault vibration signals, feature correlation dimension (FCD) extraction method combining phase space reconstruction (PSR) and fractal theory is proposed. The method reconstructs high-dimension phase space from one-dimension vibration signals of different fault states of the rolling bearing so that deep data mining is achieved. Then through analysis of varying correlation dimension of phase space feature signals, FCD that corresponds to each fault state is extracted. The experiment shows that feature correlation dimension extracted by the method is effective to fault diagnosis of rolling bearing. The method can provide reliable feature information for condition monitoring and fault diagnosis of complicated rotating machinery, and has a broad application prospect.

The machining quality controlling of the aeronautical thin-walled components is a problem hard and urgent to be solved in aeronautical industries. This problem seriously hinders the development of the aviation industry. Measuring and monitoring the condition of the cutting tool is an effective way to achieve good surface roughness and dimensional accuracy of the parts, as well as providing processing parameters for self-adapting machining. This article presents a novel smart milling tool based on RFID for real-time measurement and transmission of tool condition in precision milling operations. Contactless transmission channel is modeled by the Loos equivalent model and mutual inductance model. The effects that operational frequency, coupling size and different primary and secondary compensation topologies have on system transmission performance have been analyzed and validated.

Considering of the function requirement of the lower limb rehabilitation robot to achieve corrective walking, a mode of robot was proposed and a model machine was developed. Based on the control objective of according walking training, expected hip and knee angles and the load needed in strength training, the driving force on wires produced by the robot was calculated by giving known force on wire 1 to determine the other wires. A tension sensor calibration was done on the robot. And two wire driven function experiments were done under different condition based on it. It was indicated that the control system of the model machine was able to meet the required stability and controllability, and the accuracy and response rate of the wire output force were up to the control demand of rehabilitation training. The paper has a great significance on servo control of wire-driven parallel robot.

Inspired by recent advances in deep learning, this paper reviews the deep learning methods and its applications to object recognition and tracking. First, the concept of deep learning is introduced. Then three main stream deep learning models and algorithms, in addition to some new progresses on the research frontier of deep learning algorithms in object recognition and tracking are illustrated. Finally, a discussion about the difficulties are presented. The motivation of this work is to offer help for the research community on applying the deep learning to object recognition and tracking.

Chemical tower, also known as column, is the important equipment to transfer liquid-liquid mass or gas-liquid mass. By UG secondary development, the CAM module of Bill of Materials (BOM) management for chemical tower is realized. Optimizing model must be confirmed firstly in design. It requires that objective function and constraint conditions are to be found. Constraint processing relates to algorithm's efficiency and calculate result. Based on the multi-objective function, constraint condition on NC cutting parameter optimization model in chemical tower has accomplished. It includes surface roughness of workpiece, cutter durability. Cutting power, speed, feed in maching tool are all involved too. These constraint conditions are inter-related and they interact with each other. Their relationship is nonlinearity. Constraint condition in optimization is processed by the combination of Genetic algorithm(GA) and simulated annealing algorithm. It will be theoretically and practically beneficial to construct NC mathematical model of BOM for chemical tower.

The paper proposes the RBF neural network control method of reactor temperature, according to the PWR nuclear power plant units of 900MW. Firstly, the characteristic of control system of reactor temperature is tested on the simulation platform of PWR nuclear power plant; then, depending on the data from the experiment, the system is analyzed and transfer function fitted, and the transfer function of reactor temperature comes out. Basing on the traditional PID control, the RBF neural network combines with traditional PID control to achieve composite control, which has better control effect than traditional PID and fuzzy PID control.

The main design parameters of roadheader cutting head include tooth top envelope surface, helix number and helix lift angle, circumferential angle, maximum cutting thickness, cutting angle and torsion angle. Due to more design parameters, and it interacts among these parameters, therefore, it have to be meet a certain matching relation. Considering influence of these design parameters comprehensively and finding best matching relation can obviously improve the cutting efficiency, reduce cutting specific energy, and ensure the operation reliability.

This paper serves as an overview of the ongoing research in the field of multiscale and multidisciplinary analysis of deformation and damage in the case of oligocrystalline structures. The research focuses on experimental measurement and numerical calculation of ductile failure in the X2CrNiMo18-15-3 (AISI 316L) stainless steel. An embedding numerical technique is employed where crystal plasticity theory is used to represent plastic deformation in the material and element removal technique based on Rice&Tracey damage model for ductile void growth to simulate damage initiation inside the material, which is observed in the experiments. Additionally, the crystal plasticity model is supported by a hierarchical multiscale approach connecting nano-, micro- and meso-scales.

In this paper, large span and open type office space is selected as the research object. Established the mathematical physics model of planar radiation air conditioning, gives a simulation analysis steps of asymmetric radiant heat environment, and based on CFD and coupling of the human body thermal regulation model, simulation analysis of the applicability of the indicators asymmetric radiation temperature, asymmetric, radiating surface radiation temperature field of the aspect ratio changes, the change of indoor design temperature on the influence of asymmetric radiant heat environment.

In this study, in order to make a wide range displacement amount of nanopositioning stage and precision positioning, so design a flexible nanopositioning stage structure to meet this requirement. In this study, three different shape of the spring with four different shapes of the rib to analyze various combinations of, seen from the analysis results, when spring appearance as a cross-type (S1 type), the displacement of the shape of a wave-shaped rib (R1 type) portfolio the minimum amount of errors, and successfully analyze its spring constant and the resonant modal. The results were available for follow-up production when the reference platform.

This paper presents a new autonomous cruise garbage cleaning intelligent system, it is an independent garbage cleaning robot. The system has four functions: collecting garbage, waste identification, obstacle avoidance and autonomous cruise, it can help the cleaners clean up the garbage in public places. Compared with the traditional cleaning tools, it has the characteristics of intelligence, autonomy, efficiency etc., and well meets the cleaning needs.

Small boats have, for many years, been used for showering the canopies of orchards in The Central Plains of The Kingdom of Thailand. Little is known, however, about the exact workings of their mechanisms. This study discusses some of the physical processes that govern the functions of the boat. During the showering operation, the boat moves forward by a reactive force associated with the ejection of the water showered from two nozzles. A one-fifth scale model was used to study the mechanisms of the small boat. The apparent drag coefficient of the model, determined by measuring the total drag, was found to be inversely proportional to the Froude number and effectively applicable for predicting the drag on a planned prototype.

This paper compares the experiment and simulation results of vehicular traffic merging flow and granular merging flow. The flow rate behavior and the phase diagram of the two systems are reported and compared. Although the two systems show different flow rate behavior and phase transition phenomenon, they can be optmized with similar methods.

ODS (Operating Deflection Shapes) and modal testing are used to analyze vibration frequency and working deformation of EDM machine tool spindle head for finding the weak part of the structure and the target modal through test results in actual conditions. A more accurate finite element model of the spindle head is obtained by modifying the original model based on the comparison between analysis result of the original model and the result of the real modal test. The target modal frequency of spindle head is increased by 30.93% by using optimization method, which utilizes the ISIGHT optimization software to integrate SolidWorks and ANSYS to optimize the dynamics of the weak part. The test and optimization method presented in this paper can be used to provide a convenient and effective way to improve the structural dynamics of the machine.

High speed chuck is an important part of high speed machining tooling system, the performance of which directly affects the property and processing quality of advanced computer numerical control machine tools. In this study, ansys optimization analysis module is used to optimize chuck/tool model. The results show that structural optimization improves chuck/tool contact stress distribution and decreases the concentrated stress in hydraulic chuck cavity corner transition region and contact pressure peak. In addition, it also improves the reliability and stability of high speed hydraulic chuck.

In order to get the hydraulic excavator mechanical-hydraulic coupling characteristics, the models of hydraulic and mechanical system are built in AMESim and Virtual Lab Motion. By the joint simulation interface, mechanical and hydraulic models can exchange data in time. The characteristics of excavator work device are analyzed in the aspects of cylinder movement situations and pressure changes as shown in Fig. 4 and Fig. 5. The max pressure exists in the arm cylinder and the value is 29.2MPa, which is smaller than the relief pressure. The excavator can work normally under the design load.

A medical device of micro-jet injection for drug delivery is described in this paper. The device is powered by a Lorentz force driver (or voice coil motor, VCM) and is able to perform pulsed injection through controlling the direction of the current passing through the device. The driving force and the resulting injection pressure are also controllable through the control of the current intensity of VCM. A physical model was established by combining the existing jet injection model with the relationship of the driving force obtained from a FEM analysis. The numerical calculation of the physical model reveals the relationship between the injection pressure and the current intensity of VCM under system conditions. In a variable dose situation, the relationship between the current intensity of VCM and the dose value was obtained under the condition that the maximum injection pressure is kept above a threshold value. The calculation results can be used for optimization of the device.

The paper was to study ac/dc three phase PFC rectifier for LED lamp. The performance normally of the rectifier having is current low quality and low power factor and high total harmonics distortion current. Therefore, the objectives in this a paper going to improving power factor and reduce harmonics current. In this paper to propose power factor correction (PFC) with phase-modular Y-rectifier, boost type converter circuit using by one cycle control (OCC). For high performance method and tested of the result for realize that can solve power factor and reduce harmonic current. The research papers, conclusions for study and evaluate the circuit can be operation and suitable for use with LED 50 W (LED lamp). The data collected by MATLAB Simulation are used in comparison with the experimental tester of results.

This paper introduces a design of smart car which is used for gas detection and positioning under coal mine. The smart car uses INS/WSN integrated technology based on extended Kalman filter, thus overcoming the drawbacks of INS/WSN separate navigation and improving the positioning accuracy. Both the hardware and the software of this smart car will be described. The actual simulation results show that compared with INS and WSN, the INS/WSN integrated navigation system has an obvious improvement in positioning precision. In the simulated condition, the measurement of mine gas concentration and the accurate location of the system can be achieved.

In this paper, the dynamic characteristics of a Micro-gas Turbine rotor system were studied by the CMS (component mode synthesis). Four types of analytical models were prepared to test the CMS, of which the results valid the accuracy and efficiency of proposed method. Modal analysis of the rotor system indicates that effects of stress stiffening have greater impact on dynamic frequency than spin softening and the frequency corresponding to the blade modes is reduced due to the effect of the shaft. Results indicate that component mode synthesis is more efficient in solving large scale problem.

In order to solve the problem that classical criticality analysis can't indicate randomness and fuzziness of mechanical failure, a new method of failure analysis is presented based on triangular fuzzy number. Considering influence of fault frequency, maintenance costs, maintenance time, fault effect, decision matrix is established with triangular fuzzy number. In order to reduce subjective influence of determining weights by experts directly, linear programming equations are established to obtain weights by Hausdorff distance. Finally, through establishing possibility degree matrix at different levels of risk attitude, criticality rank of each failure mode is obtained. Taking a case study of XK7132 CNC milling machines, the results show that bearing failure is the most hazardous failure mode. Compared with classical criticality analysis, method in this paper is more scientific and reasonable, and provides a theoretical basis for improving reliability of CNC milling machine.

Piezoelectric stick-slip actuator (PSSA) is well-known by its simple configuration, minute step size, high resolution and theoretically unlimited displacement, and has been used in applications where high positioning resolution with large range of movement is required. This project designs an experimental test platform of stick-slip actuator which can be used to investigate the effects of temperature and pressure to the performance of end-effector. Embedded construction is applied for temperature sensor installation, which makes it easy to get more accurate temperature of the friction plate. A non-contact, electromagnet system is introduced in pressure adjustable mechanism. By changing the voltage direction and magnitude of coil, the pressure can be adjusted.

In order to study the high speed railway vehicle carbody dynamic property and vibration control problems, 1/8 scaled carbody rig has been designed and manufactured. Firstly, the scaled test rig is built and performed an experimental modal test technology. Secondly, finite elements computational modal analysis has been carried out to determine the structural dynamics behavior of the realized model compared the field modal test results. Finally, the achieved results verify the predicted dense lying carbody eigenvalues frequencies between these two kinds of method. The accomplished experimental modal analysis provides a sophisticated basis to improve dynamic property of scaled carbody structure for vibration control. The results are shown that scaled carbody test rig design and modal analysis technology can be effectively used to predict objectively the carbody comfort and bending vibration.

Recent various crimes and lost stuff and the like are recognized as a social problem. And users may be the subject of such crimes. To address this, the demand about location information transmission is a situation that is increasing. Therefore various institutions are providing location information service using a mobile device. Also, recently much research has been in progress to provide location-based services using the beacon in the Internet of Things (IoT). In this paper, we investigated definition and technology for Seamless LBS that accuracy is higher than accuracy of GPS in mobile environment. Also, we studied the Mobius platform for interworking with things of IoT. And, we proposed a new location lookup framework that complements traditional location lookup techniques.

With the continuous expansion of university laboratory scale, the management of laboratory, especially of open laboratory, has become more onerous and complex. Considering the limitations that most laboratories can't meet the requirements of teaching program caused by slow analysis of teaching practice and information updating, this paper proposes an open laboratory management method, which can be used for rapid analysis of teaching task and timely updating of information, by means of which students can make an appointment and conduct experiment installation management independently, etc., to improve the usage rate of laboratory and equipment, and meanwhile reduce laboratory administrative personnel's workload, to increase work efficiency.

In view of the current situation of measurement system for mining, such as complicated operation, low efficiency, poor portability, poor integrated, a new simple, efficient, handheld measurement instrument of mine spatial information integration was developed. The instrument can calculate the distance by adopting the phase method and acquire the three-dimensional coordinate data by combining with the dip and the azimuth. The hardware of instrument was developed, with the functions of independent power supply, storage of measurement data, wireless communications and others so as to realize the three-dimensional handheld measurement. The measurement software of the instrument was improved, with the functions of communication interface and measured parameters configuration, real-time display of the survey coordinate, entity modeling and three-dimensional display of the space objects, and analysis and evaluation of the models. When tested in underground mine, the measurement instrument can quickly obtain three-dimensional coordinates of the unknown underground areas and realize the maximum measuring range of the instrument at 83m and maximum measuring error of the instrument at 1cm with the characteristics of simplicity, high efficiency and portability. Its effectiveness and reliability can meet the requirements of the measurement of mine spatial information integration.

The monitoring system conducts the remote sampling, data processing and mobile phone monitoring analysis on three important parameters of the water samples including the temperature, dissolved oxygen, and PH values. The STM32F103VET6 with ARM Core-M3 as the core processor is used for sampling and the collected data is sent to the remote server through ATK-SIM900A GPRS module with a 12-bit AD converter, the Android mobile phone users can download the data directly from the server. The system can realize the remote monitoring of field water quality through the Android mobile phone, providing a convenient real-time, continuous monitoring of water quality for the users.

ARINC653 system is the current mainstream operating system in avionics system. In order to ensure real-time performance in avionics systems, ARINC653 defined two-level scheduling policy. However, the essence of partition level scheduling policy is the off-line static scheduling determined at the early stage of design, which lacks of flexibility and prone to produce idle time. On this basis, an improved method of two-level scheduling based on weighted round robin is proposed in the paper, and an extended scheduling plug-in of OSATE tool is developed and applied for schedulability analysis. Experiment that adopts avionics flight planning system as an example validates the effectiveness of the proposed method in reducing idle time of processors.

This thesis introduces a computer vision system which is applied to coating production line to automatically identify the vehicle model. This system controls camera to collect pictures by receiving signals of field sensor and processes these pictures by using grey level histogram similarity comparison technique and digital template matching technique, thus obtains the fittings' model of car body loaded by the lever body and the lever body number, and finds all corresponding information entering in advance into IPC (Industrial Personal Computer). When it needs the information of vehicle body in a link of production line, IPC will input corresponding information according to the lever body number through experimental tests, both image identification methods have good effects on identification of vehicle model and lever body number.

Graphics processing unit (GPU) has broad prospects in computation and memory intensive realms due to its superior performances in calculation capability, memory bandwidth and power consumption, and has natural applications in computational intensive power system analyses. Direct current power flow (DCPF) is often used in power system analysis, such as power flow analysis, security analysis and contingency screening. DCPF is a problem of solving sparse linear systems. This paper uses Jacobi iteration method to solve DCPF. Numeric studies on a 900-bus system have shown that the GPU-accelerated algorithm, in compared with its counterpart CPU version, can achieve about 2.3 times speedup. This highly promising performance has demonstrated that carefully designed performance tuning in conjunction with GPU programing architecture is imperative for a GPU-accelerated application.

A new Enhancement Algorithm of Lunar CCD Images based on the Dark Channel Prior & Histogram technology has been proposed in the paper. The Dark Channel parts of Lunar CCD Images have been detected through the Dark Channel Prior Algorithm first, and then only Dark Channel parts of images have been enhanced by Histogram Equalization technique. After combined enhanced Dark Channel parts with the other non-Dark Channel parts, a new Histogram modification technique has been designed and implemented to reduce the blocking effect in combined images. The new algorithm has been tested and results have been compared with other enhancement algorithms based on the histogram technology on Lunar CCD Images. The testing results have shown that Lunar CCD Images enhanced by the new algorithm proposed could become clearer, and the topography in the Lunar CCD Images becomes more prominent, color softer compared with results by other tested algorithms.

Medical image registration is the key technique of multimodal medical image processing, because it directly influences the results of information fusion of multimodal signals. It is one of the most important technique in Diffusion-Tensor Imaging (DTI), since the tensor calculation depends on the registration of Diffusion-Weighted Imaging (DWI) of different gradient direction. Therefore, the evaluation of the registration performance is a very important step for evaluating the result of information fusion. But traditional subjective evaluation method varies from person to person, while some objective evaluation methods are related to different registration algorithm or software. To solve this problem, an automatic evaluation method of DWI registration is proposed in this paper. The evaluation criteria used in this method include entropy, contrast, and correlation calculated by gray level co-occurrence matrix of Fractional Anisotropy (FA) image. Two registration results obtained by rigid and affine methods, and non-registered data are used in our testing experiment. The experiment results of 5 subjects data showed that the proposed evaluation method not only can integrate whole-brain information automatically, but also can reflect the performance of different registration methods accurately.

Conventional ‘Digital Communication Principles’ experiment platform consists of discrete components, which are lack of extensibility and flexibility. Meanwhile, software platform exhibits waveforms and functions of different communication modules. However, Due to the absence of practical coherent signals, the software platform cannot satisfy the future practical needs of profound “digital communication principle” related courses. Hence, a novel “digital communication experiment” platform bearing high expansibility and flexibility compared with traditional hardware and software experiment platform is proposed, which is useful for both experimental teaching and stimulating students' interests and awareness toward digital communication. Moreover, the extended platform allows students to design extra components, which will further improve their abilities of manipulation and innovation.

In order to make patients have a better experience and better rehabilitation effect in rehabilitation training, designed a coordination speed control method and apparatus between patient and treadmill. The system adopt acceleration sensor to detect human movement trend and figure out the expected speed of the human body. Designed a PI controller with anti-windup algorithm to adjust the speed of the treadmill, so that the treadmill can follow the speed of human to change. The experimental results show that this control method can meet the running machine speed with adaptive requirements.

We used event-related potentials (ERPs) to investigate electrophysiological correlates of Uyghur morphological word processing in lexical decision paradigm. We found N400 effects for bimorphemic complex words and pseudowords in the 350-550 time windows demonstrated that subjects failed to lexical search when they processing bimorphemic pseudowords and probably reflected access and possible interaction of the stem and suffix. We also found the neurocognitive underpinning that support monomorphemic word, bimorphemic word and both pseudoword processing is also different.

Bioaugmentation technology is a promising and low-cost method of bioremediation. There are many factors affecting the efficiency of microbial bioaugmentation remediation including composition and molecular weight of oil, the physical condition and concentration of oil, and the composition, temperature, nutrient and pH of the soil. Combined with the actual research work, this study made a comprehensive analysis of the impact of the indigenous microbial concentration, soil temperature, soil humidity, and soil pH on the petroleum hydrocarbon degradation efficiency by supplying (NH₄)₂SO₄ and KH₂PO₄ as the N and P sources, respectively. This study took advantage of indoor pots simulation experiment to analyze the factors such as indigenous microbial bioaugmentation remediation. The results showed that by adding an appropriate proportion of N, P and sawdust, and at temperature of 30°C humidity of 20%, pH of 7.0, the efficiency of petroleum hydrocarbon degradation by strengthening indigenous microbial is the best.

Psoriasis is a complex disease, in which microRNAs played an important role in regulating target genes, and thus affecting gene expression and conducting cell proliferation. To analysis the regulation of microRNAs, and to illustrate the interaction of microRNAs with psoriasis related genes, we analyzed the upstream regions of the differentially expressed microRNAs relating to psoriasis. The polymerase binding site motifs were discovered by MAST using profiles of 13 polymerases in the upstream region for each microRNA, and a SVM (Support Vector Machine) was used to identify the motifs mostly related to microRNA expression level. Result shows that motif 3 and motif 6 are key to the gene expression type of psoriasis related microRNAs.

Based on the real-time quantitative polymerase chain reaction technology and Fisher discriminant analysis method, a new approach is established to rapidly discern the bean curd with blood from duck blood, pig or cattle. Through the primer design and specificity validation of duck, pig and cattle, the real-time quantitative polymerase chain reaction technology is used to identify the components of 81 samples of blood curd. The discriminant analysis model of species identification of bean curd with blood of duck, pig or cattle is established on the basis of taking two indicators, the content of iron and that of protein, as discriminant factors and using SPSS 19.0 to calculate the discriminant coefficient. The result shows that, in the case of Fisher linear discriminant analysis model, the accuracy of identifying the authenticity of bean curd with duck blood, pig blood or cattle blood is respectively 83.0%, 82.7%, 75.3%. Through the combination of iron and protein content with Fisher discriminant analysis method, the bean curd with duck blood, pig blood, or cattle blood can be identified relatively easily. This is a new and simple way of distinguishing bean curd with blood.

In order to study the influence of different walking speeds on locomotive information of healthy human lower limbs in the sagittal plane, frontal plane and transversal plane, VICON three dimensional motion capturing system was adopted to measure the movement information of seven healthy human pelvis, hip, knee and ankle, when human was walking on the treadmill at 1km/h, 2km/h, 3km/h. The pelvic, hip, knee and ankle kinematics and the relationship of joint angles of lower limbs in the sagittal plane, frontal plane and transversal plane were analyzed. The results show that for three joints of lower limb, increasing of the treadmill velocity increases the maximum angle of the flexion and variation range of joint in the sagittal plane while increasing velocity has little impact on the shapes of the curves except curves of hip joint in the transversal plane; regarding pelvic movement, increasing velocity has small effects on amplitude and shape of curves of pelvis motion; with velocity increasing, the modes of joint movement kept invariant, knee movement is stabilized and ankle movement is complicated. The results provide kinematics information for designing and controlling lower extremity rehabilitative robot.

We study an SEIRS epidemic model with an isolation and nonlinear incidence rate function. We have obtained a threshold value R₀ and shown that there is only a disease free equilibrium point when R₀ < 1 and an endemic equilibrium point if R₀ > 1. We have shown that both disease free- and endemic equilibrium point are globally stable.

A haploid clone recovered from anther cultures and 10 diploid clones prepared from seedlings of purple coneflower (Echinacea purpurea L.) were used to compare chromosome doubling colchicine treatments. It was found that, although routine methods of culturing explants directly on colchicine containing medium could induce chromosome doubling, the efficiencies were generally low. However, by first culturing explants on a colchicine-free medium, followed by culturing the explants on a colchicine medium, the number of chromosome doubled plantlets could be significantly increased. Two preculture treatments lasting two and four days, and two treatments cultured in 240 mg colchicine 1^-1 for four and eight days, were tested for haploid cells with similar results that a step of pre-culture was conducive to the obtaining of regenerated tetraploid plants. Experiments on diploid clones comparing the durations of pre-culture and the duration of 120 mg colchicine 1^-1 treatments indicated that pre-culture for four days was more effective than eight days, and treating with colchicine for 12 days was more effective than 24 days. In addition, the mechanism of pre-culture for enhancing the chromosome doubling efficiency is discussed and a potential application of the present method for more plant species is proposed.

The load acting on human spine is complex and varying in different positions of a body, and direct measurement to obtain the complete load information is not yet possible. The objective of this study was to use a simple model to deliver the realistic load for the stress analysis of the lumbar intervertebral discs in several basic body positions, including standing, sitting, and lying in a supine, prone and lateral position. The validated finite element model of lumbar spine L1-L5 was adapted. And combined with proper constraints, characterized axial force for each body position was applied to the top end of the model according to the normal standing load and the occupied percentage on the experimental data. The stresses and strains in all lumbar intervertebral discs were calculated and their variation tendency was analyzed. The results show that stress distributions in intervertebral discs were similar between standing and sitting, and stress concentration occurred at the anteroinferior and posterior part of annulus fibrosus (AF). Slightly lower stress was found in sitting than in standing. Stress level in each lumbar intervertebral disc was significantly lower in all lying positions than that in standing and sitting. Stress concentration at the AF posterior part partly disappeared for lying. Only a small difference in stress level existed between various lying positions. Moreover, stress level in nucleus pulposus and at the AF anterior part was relatively low, and stress values in intervertebral discs generally increased from L1-2 to L4-5, while stress peak and strain peak were always located at L4-5 intervertebral disc. These features are consistent with those in previous studies mostly. It suggests that our loading model is efficient, the high strain in L4-5 AF may be a reason for leading to high incidence of disk herniation, and more lying supine should be recommended to whom suffering from back problems as a physiotherapy.

Psoriasis is an inflammatory chronic disorder mediated by cells of immune systems. To know more about the pathogenesis underlying differentially expressed genes (DEGs) of psoriasis, we used all the 64102 annotated genes to assay the transcriptome of psoriatic and normal skin based upon public available RNA-Seq data. We identified 2906 DEGs (p.adj<0.05), of which 1365 were down-regulated and 1541 were up-regulated in psoriasis. Transcription-factor binding sites (TFBS) of NFKBRELA, IRF1, STAT1 showed significantly enriched among the up-regulated DEGs. We also confirmed that cytokines in immune system play an important role in psoriasis.

The scaling problem in industrial circulating cooling water is paid more and more attention. In order to obtain bipolar alternating magnetic field, this paper presents a new device model. Moreover, aiming at the air gap flux density as high as 0.1T, we study the possibility of combining permanent magnet and rotating electric machine, then compare it with the electromagnetic generator. In addition, we study on the relationship between the magnetic induction intensity with distance and properties of two permanent magnets by using ANSYS software for magnetic field analysis. In order to realize the stepless rotation speed regulation of the single-phase asynchronous motor, an electronic speed switch was adopted, thus the alternating magnetic field frequency can also be adjusted smoothly. Through three experiments under the same conditions, we found the experimental system had experimental repeatability. Then, we carried out the experiments under alternating magnetic field with different frequencies. Experimental results showed that the alternating magnetic field had stronger inhibition effect than constant magnetic field for groups with pulse frequency as 90Hz respectively, and the highest inhibition rate reaches 33%. The scale inhibition effect of 80Hz group was the same as that of the constant magnetic field group, which indicates that not all frequencies of the alternating magnetic field have high scale inhibition effect.

Toll-like receptor (TLRs) is cell surface receptor family discovered in recent years, which belongs to the first line weapon for immune system to rapidly fight against microbial infection and plays an important role in triggering natural immunity and affecting acquired immunity. High molecular weight hyaluronic acid (HMW-HA) is important component in extracellular matrix. It can be degraded into low molecular weight hyaluronic acid (LMW-HA) by reactive oxygen molecules (ROS). The later can coordinate with ROS to activate the immune system and induce inflammation reaction through toll-like receptors. Hyaluronic acid, as internal signal of tissue damage, can be recognized by TLRs and TLRs can be activated, thereby producing a series of physiological and biochemical reaction. Different kinds of TLRs can make different reactions on hyaluronic acid in segments of different sizes. Study of relationship between hyaluronic acid and toll-like receptors can provide new concept and means for physiological and pathological mechanism of immune response and inflammatory response.

In this paper, we cultivated microcystis aeruginosa to do PEF experiments. The layout of experiments was orthogonal design including four parameters, namely peak value, duration and frequency of rectangular pulse and also treatment period. After treatment, we measured the algae cell density every 24 hours till the end of 6 days' solution cultivation. Experimental data proved the feasibility of PEF's effect on the micro-algae. In addition, peak value of pulse was the major impact parameter of PEF algae sterilization, pulse duration ranked No. 2. However, treatment period and frequency played tiny influences. Finally, we did confirmatory experiments with the parameter deduced from orthogonal layout. It was also proved that the optimum electric parameter combination could be deduced for algae inactivation from experimental data as few as possible.

Sparse representation based classification (SRC) has been extensively and successfully applied to tumor classification due to its effectiveness in classification. Different from many existing SRC methods which emphasize on strong representational ability, our proposed method takes the discriminative ability into account, i.e. joint meta-sample extraction and classifier learning, which may be favor to better performance. In addition, a novel decision rule, in relation to both the minimal reconstruction residual and the minimum classification error, is presented and used during the classification stage. Experiments using several publicly available microarray gene expression data demonstrate that the proposed algorithm is efficient and achieves comparable accuracies with the state-of-the-art sparse coding techniques for tumor classification.

This study proposed a novel design of intelligent pacifier, in order to help the caretakers knowing when to feed the newborn infants or premature infants who do not have sufficient sucking ability. By adopting the inherent safety and TRIZ methods, the inherent safety analysis and design could effective prevent the injuries caused by improper feeding. Furthermore, Su-Fields Analysis was performed to identify the problems, and 76 Standard Solutions were used to find the possible design structure for systematic innovative design. The intelligent pacifier was designed with a distortion sensor to detect the changes of sucking ability and frequency of the infants. The data were transmitted via the wireless transmitter to a remote receiver, and the computing module of the intelligent pacifier would display the actual sucking force and frequency on the screen. Then, the caretakers could refer to the data and provide proper care for the infants.

In this paper, the 2CCD camera AD-080CL of the JAI company was studied, design of visible light and near infrared image fusion algorithm for the fluorescence imaging system. And use MFC application architecture built the supporting software system in VS2010 environment. The system consists of the same optical path for visible light and near infrared image, ensure the two lines of the same vision, it's convenient to set up and adjust and more practical and low cost. Image processing better fusion results achieved the purpose of the display area of fluorescent tags in visible light image, and possesses the advantages of simple rapid and suitable for engineering development. Software has achieved the basic functions such as real-time display and save the video image.

To study the genotype and antimicrobial mechanism of ESBLs among E. coli. The strains that produced the ESBLs were tested by the disk diffusion; plasmid spectrum were used to detect the genotype of E. coli. There were 53 isolates producing ESBLs. The number of natural plasmid was 4 to 5, the size is about 2.0-40kp.

The research on instantaneous center of human knee joint is one of more important research areas of knee joint biomechanics research. In this paper, NDI OPTOTRAK optical motion capturing system was adopted to measure the movement information of knee joint of one adult male. A simple and efficient method about calculating instantaneous center of human knee joint was provided. To avoid experiment error caused by improper operation, Planar fitting and cubic polynomial fitting was applied in processing data. The result provide reference for assembling and designing clinical prosthetic knee.

The way we teach and learn is at a once-a-millennium turning point. Language study is improved mostly through mastery learning both in classroom and routine life. The traditional classroom instruction is no longer as effective as before with the advancement of modern information technology. This is where the flipped classroom model could function well. Flipped classroom instruction model can both improve students' achievement and classroom performance and bring a very fundamental and significant effect: the good cultivation of critical thinking in high education classroom which is critical in bring forth both the teacher's and students' potential and creativity.

The brands preference analysis research draws lots of attention recently. It is useful for marketing, personal recommendation, etc. We utilize an effective statistical analysis method called multidimensional scaling to study the brands preference of mobile phones. The results show that there are four distinct groups of brands and one outliers brand based on our post-90s preference data. Finally, we represent the results visually.

The Chinese education status of the postgraduate degree is described in this paper. The characteristics of the professional degree postgraduate students are compared with those of the academic degree postgraduate students in detail. Finally, in order to provide reference for education of professional degree postgraduate students, the current difficulties during the education is discussed.

What is the best means for students to acquire knowledge, Practice! How to practice education of executive in the university, is the main problem to be solved in this paper, through the curriculum, students' independent experiment and classroom discussion, college students to participate in competition in science and technology and other aspects of the comprehensive. Proposed to explore practical education in colleges and universities.

With the rise of the Internet of Things (IoT) and increasing application, the IoT teaching instrument demand of colleges and universities is increasing. Traditional IoT teaching instrument integrates a lot of hardware components, not only with the high cost but also with poor portability. Besides, the update of IoT technology leads thata lot of IoT teaching instrument have been eliminated without full use. Facing these problems, we propose a new design pattern to realize the diversity, modernization and informatization of the IoT teaching instrument. The experimental instrument is small and convenient to operate, which saves cost with extendable interface. According to the analysis of the traditional teaching instrument and the experimental equipment design principle, the IoT teaching instrument based on the Android mobile phone has been designed to optimize the structure and improve performance.

The cultivation of university counselors' occupational emotion is an important part of constructing professionalism among counselors. This study will explore the generation mechanism of university counselors' occupational emotion from the perspectives of individual, university, and society on the basis of such emotion generation theories as cognitive theory of emotion and behaviorism so as to further expand the horizon of studies on occupational emotion and counselor.

Through a three-way collaboration between an Atayal community high school, a community society and the research team, this study adopted the five-stage model of ADDIE instructional design for conducting the analysis, design, development, implement and evaluation of an Atayal cultural arts and crafts program. The 21 high school seniors who participated in the program completed works of Atayal cultural arts and crafts, such as strings of millet beads, Atayal woven fabric, flip-flops, leather carving and ramie key rings. We hope this study may become a reference for the instructional designs of humanities and social sciences for other tribes.

Medical devices belong to one of national strategic emerging industries, in need of numerous professionals. Practice is explored on medical and rehabilitation engineering construction aspects. The distinctive talent training program is developed. The relevant curriculum system is established. The practical teaching system and the subject characteristic specialty laboratory are designed. The academic structure, age structure, professional structure, discipline more rational structure of the teaching staff are constructed. The new path of medical an rehabilitation engineering specialty construction is explored.

Examination is significant for education. Effective style of examination makes students learn better. We propose a new type of machine learning based gamified examination system which benefits from the intelligence of machine learning algorithm and attractiveness of gamification. The new type of examination system helps students learning happily and effectively.

In views of the crystal structure and symmetry, the key points and difficult points of crystal structure section in the curriculum of solid state physics, we use Visualize module of Materials Studio (MS) software to stimulate and analyze the typical diamond structure listed in the textbook, thus the study situation that constructivism theory advocates is established, which not only clearly shows the characteristics of atomic arrangement and lattice periodicity and symmetry, but also vividly describes some abstract conception of the related parameters about crystal structure and symmetrical characteristic. Eventually, the efficiency and quality of teaching can be improved effectively. Moreover, the application of software in teaching can enhance integration of multimedia technology and constructivism theory, and improve the development of modern education.

With the development of information technology and the popularity of internet, network aided teaching has been widely applied in colleges and universities. Moreover, audience response system, which allows instructors to ask questions and immediately obtain responses from students through response devices, has also been widely adopted in higher education. In this paper, we suggest that the conventional face to face tutoring should be combined with the audience response systems and the network aided teaching technologies, so that the teaching efficiency can be improved, the teacher-student interaction could be promoted and the performance of the student could be comprehensively evaluated.

Universities are experiencing significant growth in international students' enrollment, which makes the teaching innovations are urgently needed. Practical and systematic experiments are suitable for some traditional theory teaching courses, like data communication, control theory, communication theory, and digital communication, et. al. However, they are not suitable to the emerging enrollment of international undergraduate students, for the complex theories cannot easily absorbed or grasped by different education-background students. An android based “Radio Frequency identity” (RFID) “Objects' Searching System” (OSS) is designed to demonstrate the transmission and controlling of signals through the user-friendly Android apps, and also explain easily the information exchange and signal processing. The proposed OSS has a flexible mobile keyboard control center, which is suitable to non-native international students to operate. Also, the proposed android RFID system combines Bluetooth, serial, and SPI communications together, which are designed to promote the efficiency of finding small objects and has preliminary higher level network interfaces for the students to extend the system functions and further improve the efficiency.

The construction of a specialty determines the life of the specialty. And the quality of the computer specialty construction scheme plays an important role in the cultivation of computer specialty students. But in the course of implementation of the existing computer specialty construction scheme, we find three significant questions: the teachers are lack of practical experience; the students have no chock-a-block professional knowledge; the students are lack of practical ability and innovative consciousness. Aiming at these questions, we do some investigation and research first, and then draw up a new computer specialty construction scheme based on the perspective of oriented computing and reform the curriculum construction scheme based on working process. After the implementation of the new schemes, the problems above can be weakened. And the evaluation of students, experts, teachers, and enterprise and industry is more satisfactory.

The thermal analysis and DTA are used to study the effect of metakaolin on the hydration process and mechanism of cement. The result shows that the second exothermal peaks are in advance which means metakaolin can accelerate the hydration speed. DTA and strength result show that metakaolin can increase the strength observably, especial for 28 days strength.

The intake tower of a dam is impacted by landslide during the process of reinforcement. The inlet of culvert pipe is pulled open from the connection with the intake tower for about 30cm. Through measurement of the site of intake tower, non-destructive detection of pile foundation, and the engineering monitoring, it preliminarily analyzes the influence of the landslide on the structure of the intake tower.

Effect of frost heave on overwintering foundation pit supporting structure cause a large number of engineering accidents, the research topic is paid more and more attention by researchers. Based on the finite difference analysis software FLAC3D, earth pressure back continuous wall and the impact of Frost Heave on the forced deformation of Supporting Structures are studied by numerical simulation method; theoretical calculation value and simulation value of earth pressure back continuous wall, displacement of retaining structure before and after the frost heave and the change value of soil temperature under different time of frost heave; the influence law of frost heave deformation of foundation pit supporting structure by frost heave is revealed.

To evaluate the creep properties and viscosity of bitumen, dynamic shear rheometer (DSR), Burgers model and viscometer were used to measure these properties. Finite element analysis (FE) were used to measure the stress distribution on the stress relaxation process. Results indicated that curing time decreases with the increasing epoxy content and viscosity decreases with the increasing temperature. The viscosity parameters of low and high temperature is not consistent because of the different test methods. Burgers model showed that the viscoelastic characteristic parameters of modified asphalt are available and elastic parameters E₁ and E₂ increase when the contents of epoxy resins increased and the viscosity parameters Ƞ₁ and Ƞ₂ decrease when the contents of epoxy resins increased.

With the resource recycling concept putting forward, all kinds of industrial waste have been applied in cement industry. The relatively common steel slag and rice husk ash were selected as raw materials to study the physical properties of steel slag and rice husk ash composite cementations materials. Cubic compressive strength, water absorption and drying shrinkage performance were studied and the results showed that the high contents of composite cementations materials met the building mortar strength requirements. Meanwhile, the drying shrinkage of steel slag and rice husk ash composite cementations materials is improved. While the water absorption is higher than pure cement.

Water damage is one of the most common damages for asphalt pavement. Desulfurization residues, cement, and limestone as filler were added into asphalt mixture. In order to study the moisture resistance of asphalt pavement, the asphalt mixture Marshall Immersion test and freeze-thaw splitting test were conducted. AC-16C and AC-20C based on basalt aggregate were designed and used to materials performance test and analysis. It shows that the Marshall stability (MS) and residual stability of adding desulfurization residues are 10.65KN and 96.9%, and compared with limestone added sample, the desulfurization residues sample's value of intensity ratio of frozen and melted (TSR) has increased about 20%, respectively. Meanwhile, desulfurization residues can also improve the moisture resistance of asphalt mixture.

Cracks of concrete structure during construction are mainly caused by temperature load, but good effect of cracks prevention methods can be achieved if the timely and reasonable scheme of temperature control is selected. Research shows that the method of external heat preservation and internal cooling pipes can prevent cracks, while the type and thickness of the thermal insulating materials, cooling water temperature, cooling lasting days and cooling pipe arrangement influence the effect of temperature control by certain degree. In view of this problem, a case study is presented where the 3-D FEM including water-pipe cooling is adopted to simulate the thermal field and stress field of concrete under different combinations of measures. The result shows that good effect of temperature control and crack prevention is achieved. This research should have great reference signification to similar concrete projects in the future.

The infinite foundation radiation damping effect shall be fully taken into account for the purpose of simulating the earthquake response of arch dam more genuinely. This article studies the border element with consistent equivalent viscoelasticity as well as the method and technology for wave input on this border, realizes the seismic motion input of arch dam-foundation system with the stress time history in correspondence with the incident field at bottom border and free field at side border as border load. With some high arch dam in China as example, it analyzes dynamic response of arch dam-foundation system in three-direction earthquake action, compares it with calculation results of traditional massless foundation model and studies the impact of infinite foundation radiation damping upon arch-dam earthquake response.

Most of concrete constructions built on urban ground surface are impermeable materials, which are very bad for urban ecosystem. This paper studied evaluation methods of permeable slow-traffic system though its drainage effect, noise reduction effect and thermal island effect reduction. The results show: as for drainage effect, permeability coefficient increase with asphalt mixture void ratio; non-fines concrete combined with graded gravel penetrates the most quickly, followed by graded gravel base and cement stabilized macadam combined with graded gravel. For noise reduction effect, the acoustical absorptivity of permeable concrete increase with the void ratio rising. And for thermal island effect reduction, temperature difference between surface and middle course of permeable pavement is much larger than that of other types of pavement structures, which illustrates that permeable pavement can alleviate thermal island effect positively. The results suggest that drainage effect, noise reduction effect and heat island effect reduction can be used to evaluate permeable slow-traffic system reasonably.

Hollow shear wall generally applied to multi-story building and it can solve the problem of heavy self-weight with ordinary shear wall use in low-rise buildings. However, it is difficult to guarantee the quality of hollow shear wall at the site, so the paper presents prefabricated hollow shear wall. It has a lot of merits, such as small volume, easy to transport, convenient construction and so on. But study the seismic properties of prefabricated hollow shear wall is still very few, especially the seismic properties of post-cast strip. For the above reasons, the paper produced four specimens to simulate prefabricated hollow shear wall. Experimental results show that the prefabricated hollow shear wall has good seismic performance and the existence of post-cast strip and holes is not influenced structure seismic property. So it can be used in multi-story buildings.

During seismic action, frame columns are under reversed load. Unexpected damage of column elements may occur because of the continuous variation of axial force due to overturning moment caused by the earthquake and vertical seismic force which affect the stability of the whole structure. Therefore, the influence of the variable axial force should be considered in evaluating accurate characteristics of force and deformation of frame columns under cyclic loading. This paper presents an evaluation of hybrid simulation test method on substructure with columns under variable axial loads.

Chloride ions begin to erode concrete in early age. In this paper, the rule of diffusion coefficient and the development of effective porosity of early age concrete mixed corrosion inhibitor in different concentrations of salt solution are analyzed through coulomb electricity method and the effective porosity test. Results show that the chloride ion penetration resistance of early age concrete increase with increase of age, weaken with the increase of chloride ion concentration. Effective porosity decreases with the increase of age and the concentration of sodium chloride solution. Concrete mixed corrosion inhibitors can effectively reduce the coefficient of permeability, the early effect is better than the late.

In this paper, the chloride ion erosion resistance of early age concrete has been studied by chloride erosion experiment under dry-wet cycles including chloride ion concentration and chloride ion diffusion coefficient, through the analysis of chloride ion diffusion performance with different curing specimen. The experiment results show that the chloride ion concentrationand chloride ion diffusion coefficient increased significantly under dry-wet cycles, however, the chloride ion erosion resistance of concrete is greatly reduced, especially in the early age.

Hoek-Brown criterion is provided in FLAC3D software, but it is rarely applied. The main reasons is that the corresponding post -peak parameters are difficult to obtain. In the article aiming at Hoek-Brown criterion, evolution of different strength parameters and the corresponding stress-strain curves are studied by means of numerical analysis. Results show that the post-peak part of the stress-strain curve is much influenced by the evolution process of strength parameters and the confining pressure. The presented study may provide a heuristic method to determine the law of post-peak evolution of strength parameters of Hoek-Brown criterion.

Towards Tongtianhe Bridge located in high altitude alpine permafrost, the absence of the concrete mix data and other special circumstances, we do plenty of relevant research: concrete mix preliminary design, comparative study of the strength and frost resistance of putting two water reducer in concrete under standard conservation and outdoor conservation, and the pore structure of the incorporation of two water reducer paste are analyzed. The results shows that: the early strength type of polycarboxylic water reducer possesses good effect of low temperature, and it can better improve the internal pore structure of sample, increase frost resistance of concrete. In addition, under the special circumstances, we discuss the construction and maintenance technology of concrete in order to better serve the construction site.

The volume of Daguangbao landslide is very huge, whose accumulation has blocked the Huangdongzi valley, then produced two landslide dams. The water in upstream catchment leaks out from the deposit downstream along the original Huangdongzi valley. The seepage flow is greatly influenced by rainfall. The hydraulics method is applied to calculate the volume of seepage in five rainfall intensity; and it verifies that the seepage piping and soil flow are unlikely to happen; and then evaluates the stability of the debris flow area in downstream side. The conclusion is that part of the accumulation will in unstable state in torrential rain and earthquake condition.

During 1999 Chi-Chi earthquake in Taiwan, numerous historical wooden buildings suffered serious damage. Most of these historical wooden buildings are important cultural property in Taiwan, and their damages are related to the mud-plaster wall. For investigating the structural behavior of the mud-plaster wall, and establishing the fundamental knowledge for seismic assessment, in this study, the most important element, mud, in the mud-plaster wall is tested with different additive, under compressive load, in order to observe the properties of these specimens. The obtained failure mechanism is discussed, and the followings results are concluded.

• Specimen with cement added will have best initial elastic modulus E.
• Specimen with hemp fiber added allows higher plasticity displacement.
• Specimen with clay added will not help increase the strength.

The rheological properties and the components analyzing of styrene butadiene styrene (SBS) inhibitor modified asphalt was investigated by dynamic shear rheology (DSR) and four composition analyzer, respectively. Compared with the compositions and fundamental properties of asphalts, the results show that the addition of SBS inhibitor to asphalt results in reducing of the penetration and ductility and enhancement of the softening point. The complex shear modulus reduces slightly while the phase angle increases when the inhibitors are added. Meanwhile, the components of saturates and aromatics change slightly. With the increase of SBS inhibitor, the content of resin decreased and the content of asphaltene increased.

In order to prepare polymerizable organic tourmaline, allyl glycidyl ether (AGE) modified tourmaline powder had been investigated in details by focusing on the experimental parameters of turbidity and subsidence time in liquid paraffin. The experimental results indicated that the organic modified tourmaline have a good dispersity in organic solvent when the weight ratios of AGE to tourmaline was 0.8, weight ratios of the solvent to tourmaline was 4.0, reacted at 140°C for 6h. And the structure of organic modified tourmaline was also characterized by means of IR, XRD and SEM.

Cellulose nanocrystals were extracted from cellulose raw material through hydrothermal process, and then polyaniline layer was coated on the surface of cellulose nanocrystals via in-situ chemical oxidative polymerization of aniline monomers. The resulting nanocomposite was investigated by scanning electron microscopy, Fourier transform infrared spectrometry, thermal gravimetric analysis, and gas sensing measurement. The results show the nanocomposite with good core-shell structure exhibited high thermal stability. For ammonia gas detection, high sensitivity, relative fast response, short recovery time, and good reproducibility can be achieved for the nanocomposite.

The Fe₂O₃ nanoparticles have been prepared by the co-precipitation and followed by calcination process. The as-prepared Fe₂O₃ nanoparticles were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray analysis (EDS), and X-ray diffraction (XRD). Catalytic wet air oxidation of phenol with molecular oxygen using the Fe₂O₃ nanoparticles catalyst at different temperatures has been studied. The results showed that the catalytic activity of the Fe₂O₃ nanoparticles for phenol degradation can be increased with increasing the temperature, and the degradation of phenol catalyzed by the Fe₂O₃ nanoparticles fits the first-order kinetics.

In low oxygen partial pressure atmosphere, resistance variation of Y-Mn co-doped barium titanate (BaTiO₃) through 500°C ~ 700°C heat treatment which could be a convenient method to reduce resistance of sintered elements, was investigated. Co-effect of oxygen and spontaneous polarization during this process was discussed qualitatively to explain the different quantity variation of room temperature resistance and maximum resistance in resistance-temperature (R-T) characteristic profiles.

Mechanical alloying (MA) as a powder metallurgy method is often used to prepare materials with ultrafine grain and special structure difficultly obtained in conventional ways. In this paper, the TiH₂45Al4Sn (at. %) composite powder was mechanically milled by high energy ball milling. The crystalline grain size, morphology and phase characteristic of milled powder with different milling time were investigated by XRD, SEM and TEM. The results show that with the milling time increasing, the powder particles are refined rapidly in the initial stage and then gradually become stable. The new phase Ti₂Sn₃ is formed by mechanical alloying (MA) of TiH₂, Al, Sn powders during milling which resulted particles refinement to very small size. The homogeneous and dense Ti₂Al and Ti₂Sn₃ intermetallic compounds are obtained after vacuum hot pressing sintering, which microstructure is composed of equal axial Ti₂Al as matrix and fine Ti₂Sn₃ particles. Because of the addition of Sn, Ti-Al intermetallic compounds formation is inhibited during MA and sintering. However, Sn contributes to the formation of Ti₂Al phase which which is difficult to be obtained with the conventional method of casting and forging.

The Ga_42.5Mn₂₉Ni_28.5-xCo_x (x=0,1) samples showed higher martensitic transformation temperature of 816°C and 470°C. The decrease of transformation temperature maybe is due to substitution of Ni by Co which has a smaller ion diameter and lower valence electrons. Additionally, Co doping can significantly enhance Curie temperature and saturation magnetization of Ga_42.5Mn₂₉Ni_28.5 alloy. Also, the highest Curie temperature of 255°C is obtained in Ga_42.5Mn₂₉Ni_27.5Co₁ alloy, this is about higher 200°C than that of the Ga_42.5Mn₂₉Ni_28.5 alloy. In addition, the compressive strength and compressive strain are obviously enhanced by the addition of 1 at.% Co. It can be seen that the fracture surface of Ga_42.5Mn₂₉Ni_28.5 and Ga_42.5Mn₂₉Ni_27.5Co₁ alloy exhibit typical brittle characteristics with an intergranular pattern.

Microstructure and properties in the tempering process of high temperature deformed Nb microalloyed Steels F40 had been studied by resistance heating and die casting machine. Results showed that in the process of resistance heating, temperature in central section of samples was higher than that in the edge. Fully austenitization was obtained when samples were heated to 1250°C. In the tempering process, the resistivity firstly decreased and then increased. Microhardness had the similar trend as resistivity except it decreased finally, which contributed to changes of microstructure and precipitated phases in the tempering process.

The Sepharose CL-6B column was made to separate ricinus communis agglutinin (RCA) from the crude extract of castor beans. RCA were immobilized on activated Sepharose 4B to prepare the affinity polymer beads, which was used to capture the proteins in rabbit plasma by affinity chromatography. Results showed that two polypeptides with molecular mass about 120 and 97 KDa were captured by these affinity polymer beads. The captured polypeptides were demonstrated to contain the carbohydrate. The affinity polymer beads for separating sugary proteins from biological samples were successfully prepared.

The objective of this study was to examine the impacts on mechanical properties of zirconia ceramics after surface modification with different concentrations of nano-silica sol by sol-gel process. 40 zirconia ceramic blocks were randomly divided into 4 groups: Group A (control group): no surface treatment; Group B, C and D were respectively treated with 20%, 30%, 40% nano-silica sol via sol-gel process. The Vickers hardness, fracture toughness, flexural strength and microstructure of all samples were measured. The microstructure of cross-section of the ceramics was observed under scanning electron microscopy (SEM). There were no significantly differences on Vickers hardness, fracture toughness and flexural strength (P>0.05).The interlocking layer thickness of Group C was greater than that of Group B and Group D.30% nano-silica sol might be the optimal concentration used in the further clinical practice.

A novel kind of magnetically photocatalyst Fe₃O₄@SiO₂@BiOBr was synthesized by hydrothermal method. Fe₃O₄ nanoparticles were firstly synthesized, and then got coated by SiO₂. The as-prepared product was coated by BiOBr finally. The character of Fe₃O₄@SiO₂@BiOBr was fully analyzed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and reflectance spectroscopy (DRS). The as-prepared Fe₃O₄@SiO₂@BiOBr show good photocatalytic performance in degradation of rhodamine B under visible light irradiation. In addition, Fe₃O₄ performs good magnet, which plays an important role in Fe₃O₄@SiO₂@BiOBr samples, moreover, its nontoxicity, easy and cheap to get also give it many priority.

Synthetic porphyrins without long alkyi chains were used for forming monolayers and multilayers on substrates. The transmission electron micrographs (TEM), surface Pressure-area isotherms (Pi-A)isotherm, Spectral study and fluorescence lifetime measurement revealed the stable condensed films with measured molecular areas compatible with a vertical or tilted orientation of these molecules on the substrate, and the formation of aggregates as the main species in these films. The behavior for films of porphyrin mixed with stearic acid (SA) and arachidic acid (AA) was also studied.

Since transparent conducting oxides can be as a buttom layer of complex film electrodes, electrodeposition technique may produce ZnO films depending on variety conditions and modified surface layers of substrates in electrochemical procedures. Here we invested the structure and morphologies of top ZnO layers by using modified surfaces of the substrate in the multilayer film-“ZnO-electrodeposition /ZnO(002)-sputtering /ITO/ glass”.

The differences of two melting process, which are conventional medium frequency furnace melting and duplex melting with blast and medium frequency furnaces have been investigated. It is shown that the short-cut duplex melting process resulted in higher undercooling of the iron melt, more undercooled graphite in the microstructure, higher tensile strength and hardness worsening the machinability depending on different conditions. Modification of composition, the carbon content in this study, and enhancing inoculation can eliminate the adverse influence of changing the melting process.

This paper presents a WPF – based TFT-LCD substrate glass measurement system, which utilizes the .NET's WPF technology to integrate the CNC control, data acquisition, Matlab data processing, SQL database and Office report forms in a complete special software system.

The following sections is included:

• Author Index