bluuebunny/crossref_metadata_2025 huggingface dataset:
Determination and Correlation of Solubilities of [HBth [CH3SO3] in Binary Solvent of Ethyl Benzoate and Alcohol
Authors: He Zhi Jian , Zhao Li , Wang Zhuo Duan , Song Hang , Bian Qing Quan
Published: September 2013

The solubility of benzothiazolium methylsulfate ([HBt [CH3SO3]) in binary solvent mixtures of ethyl benzoate and alcohol was measured by equilibrium method. It was found that the solubility of [HBt [CH3SO3] in this mixture increased with alcohol in mixture scaling up at the same temperature. When the composition of mixture was the same, the increase rate of solubility of [HBt [CH3SO3] in binary solvents was very different at various temperature range. All the solubility data were correlated with three thermodynamics models, and the average relative deviation (ARD) of the calculated value of the three models and the measured values was all less than 2.94%. The thermodynamics models revealed that the degree of association of [HBt [CH3SO3] decreased with the alcohol ratio reducing in binary solvents, the fusion enthalpy of HBt [CH3SO3] remained the same at the range from 233.1K to 293.1K. At last, it was summarized that the change rule of content of related components of [HBt [CH3SO3] + ester + alcohol ternary system at different conditions, and some properties of the system were forecasted. The research in this text was hoped to provide meaningful reference for the use and recycling of ionic liquid.
A Worst-Case Execution Time Analysis Approach Based on AOE Networks
Authors: Kong Liang Liang , Chen Lin
Published: September 2013

To overcome disadvantages of traditional worst-case execution time (WCET) analysis approaches, this paper proposes a new WCET analysis approach based on AOE networks for ARM programs. By assigning the execution times of program segments to weights of directed edges, we reformulated the analysis of the WCET of the program as finding the longest path in a weighted directed graph. An algorithm implemented in this paper is used to search the longest path in the weighted directed graph and gives the WCET estimate finally. Experimental results have shown the analysis approach proposed in this paper is an effective way to obtain the safe and tight WCET estimate for ARM programs.
Simulation Software Application in "Power System Analysis" Course Teaching
Authors: Sun Li Hua , Gao Xiao Zhi
Published: September 2013

With the development of computer simulation software, its application has become an important teaching method in Electrical Engineering and some related courses. This paper introduced some frequently-used simulation software in electric power system, such as PWS, PSASP, and MATLAB etc., and especially analyzed the application of these software in "power system analysis" course teaching.
Study of UV Curing Kinetics for Coating Containing Siloxane Modified Polyurethane-Acrylate
Authors: Qi Yu Song , Yang Jian Wen , Zeng Zhao Hua , Chen Yong Lie
Published: September 2013

The UV curing kinetics of coating containing siloxane modified polyurethane-acrylate were studied using photo-DSC (DPC). The effects of some factors such as incident light intensity, initiator concentration, reaction temperature on the curing kinetics have been analysized from DPC data. The curing kinetic parameters (kpandkt) for prepolymers have also been determinedv by combining steady state and non-steady state kinetics.
Urban Flood Control System Based on 3G-Wireless Network and GIS Technology
Authors: Zhang Gang , Shao Yang , Zhang Lei , Zhao Wei
Published: September 2013

In recent years heavy rainstorm has occurred frequently in cities of China, which threatens to the safety of people and causes the flood control situation to become more complex and grim. Flood control depends on real-time flood data, such as rainfall, river stage, and PSRP (pump station running parameters). Therefore the accuracy and stability of data acquisition and transmission are particularly important. This paper explores to make use of geographical information system technology, 3G wireless networks, and sensing technology to design and implement an urban flood control system. This system can acquire and transmit flood data and surveillance video stably and efficiently. Experiments prove that this system can decision making and greatly improve efficiency of flood control.
Analysis of Time Series Prediction in Wireless Sensor Networks' DPM
Authors: Zhao Jing , Zhang Jin , Zhou Chi Min , Wang Cheng
Published: September 2013

Because of the battery replacement confined by physical conditions, the battery energy limit of the sensor nodes becomes one of the most critical constraints in the design of the entire sensor network , which directly determines the network life. The basic idea is to close sensor nodes within the device when it is not needed, and awaken them if necessary so that the sensor can reduce overall energy consumption. This paper compares the autoregressive model and moving average model in time series analysis. Simulation results show that after dynamic power adjustment, it can reduce energy consumption, extend the entire life cycle of wireless sensor network..
Design and Implementation of Handover Procedure Related to Radio Resource Control Layer over UE in TD-LTE System
Authors: Li Xiao Wen , Meng Xiang Song , Zhang Yang
Published: September 2013

In order to guarantee the high rate, high throughput and low latency and reliable service provided by TD-LTE system under various mobility conditions, handover (HO) procedure and its performance are of high importance. Based on research on structure of TD-LTE system and RRC (Radio Resource Control) layer, this paper proposed intra-system handover procedure in RRC layer of UE side. Simulation of the proposed design and implementation on SDL (Specification and Description Language) /TTCN (Tree and Tabular Combined Notation) verified its conforming to 3GPP conformance protocol specification. Finally, proposed design was verified on the chip ARM1176JZF-S with the corresponding software.
Study on Testing of LTE Terminal Layer Two Based on TTCN-3
Authors: Chen Fa Tang , Zhu Ming , Qiu Zhi Hui
Published: September 2013

Consistency test is an important part in protocol development. This paper not only introduces standard of TTCN-3 and structure of LTE system layer 2, but also set an example of RLC layer to analyze the test model and designed a new test method through the development of TTCN-3 abstract test set. Based on the TTCN-3 test set of TTworkbench platform from Test Technology, the protocol consistency in RLC layer is verified and the effectiveness of the new method in consistency test is proved. Now the scheme has been applied in the project LTE system TTCN expanding test set instrument.
Mode Analysis of Power-Split Hybrid Electric Vehicle
Authors: Wang Qing Nian , Wang Wen , Wang Peng Yu , Li Feng
Published: September 2013

EVT transmission in Planetary Gear Hybrid Electric Vehicles makes it available that the engine works on the optimal curves; yet because of the speed limitation of motor MG1, the maximum output power of the engine is a function of vehicle speed. The maximum traction and regenerative braking power is also a function of vehicle speed. Based on this, the vehicle drive modes consist of EV mode, economy mode and power mode, and braking modes include the regenerative braking mode and electromechanical braking mode.
The Design of Gilbert-Type-Based Zero Intermediate Frequency CMOS Mixer
Authors: Li Rui Min , Gong Liang , Chen Zhong Ping , Jiang Wu Long
Published: September 2013

Based on the techniques of dynamic current injection, common source node resonance, second-order linearity performance and the application of CMOS technology, a 1.8V power supply voltage active folding Gilbert-type zero intermediate frequency mixer has been designed by using Candense design system. The result of circuit stimulation shows, single sideband noise figure is 6.109dB when the mixer locates at 1MHz, 6.71dB at 100KHz, 10.631dB at 10KHz. Frequency conversion gain is 11.389dB and input third-order intermodulation point is 4.639dBm.
The Electromagnetic Force Influencing Research of a Rectangular Cross-Sectional Rail Launcher by Armature Position
Authors: Yang Cheng Wei , Li Xiao Jiang , Wu Hao Ran
Published: September 2013

The electromagnetic force which influenced by rail launcher armature position have been researched in this paper. As an important indicator, Inductance Gradient (IG) denotes the performance of rail launch, which can make the railgun performance to achieve optimal results by better design. A rectangular cross-sectional rail launcher model was built based on the Biot-Savart law in this paper. Furthermore, the analytical expression of inductance gradient can be obtained by this model. Finally, the electromagnetic force can be calculated. Some numerical simulations are made to test the validity and capability of the proposed model.
Development of a Pulsed DC Power Supply for Generating Cold Plasma Jet
Authors: Hu Ye Lin , Du Zhi Wen , Chen Zhao Quan
Published: September 2013

This paper discusses a lithium battery-driven cold plasma jet at atmospheric pressure with a pulsed power supply of design and its simulation. H.V. DC(High voltage directed current) and pulsed discharge circuit comprise of the entire pulse power system. H.V. DC circuit using TIs TMS320F28335 chips as the core of the circuit control module, the chip improves the stability of the H.V.DC circuits. Pulsed discharge circuit design plays a crucial impact on the formation of the narrowed pulses. A new double pulsed discharge circuit is designed by the proposed program. As discharge experiment shown finally, the steep narrowed pulse of pulsed power supply can be used to stabilize the output of the pulsed front.
On the Security and Stability Analysis of Power System Based on Big Data Mode
Authors: Wei Da Qian , Wang Bo , Ji Xing Pei
Published: September 2013

The contradiction between the unbalanced geographical distribution and the electricity consumption of energy distribution determines the long-distance; high-capacity transmission will be an important feature in the future development of the electric power industry. Based on GPS technology, WAN synchronized phases measurement technology has provide real-time dynamic information to the system. However, continuous improvement of the PMU distribution and the real-time monitoring of the grid by WAMS system increasingly comprehensive, massive measurement data have been brought about. Studying the measured data from various trips; it meets the 3V (volume, variety, velocity) characteristics of big data. This paper presents big massive data processing methods to solve the problem with various angles, and its feasibility and necessity.
Temperature Compensation Technique in Cable Tension Sensor Based on Magneto-Elastic Effect
Authors: Tang De Dong , Zhu Hong Jun , Wu Ming Fang , Mou Jun Lan
Published: September 2013

Magneto-elastic cable tension sensor have a number of advantages, it will be ideal method to measure cable tension in large span cable-bridge, but the sensor is sensitive to temperature, so the temperature influence is not negligible to sensor. In this paper, the principle of cable tension sensor based on magnetic-elastic effect is introduced, the common temperature compensation technique are detail analyzed. A novel method of temperature compensation by adjusting the bias magnetic field is put forward, by theoretical analysis and experiment, indicated that it is feasible to compensated the temperature influence.
Coating Binder Migration and Affected Parameters: Influence of Coating Process
Authors: Zhen Zhao Hui , Wang Zheng Shun
Published: September 2013

The coating binder in cross-section of coating layer will be migrated, the binder concentration will be different in z-direction of coating layer, which affect some properties of coated paper. The paper studied the effects of coating progress on binder migration and affected factors. The z-direction distribution of the coating binder which was tagged with Br in coating layer and its concentration in coating surface were examined quantitatively by using SEM-EDXA and ESCA analysis. During coating process the drying rate, dwell time from coating device to dryer and coating weight affect the binder migration. The mechanism of binder migration was proposed. The results indicated that the degree of binder migration is directly proportional to the drying temperature and coating weight, but reduces with extending the dwell time.
The Design of a Low Cost CANopen Slave Node Based on STC90C514RD
Authors: Chen Zai Ping , Jia Chao Qiang
Published: September 2013

CANopen is a kind of higher layer protocol based on CAN, and it is widely used in industrial automation field, especially in distributed motion control systems. The paper presents an approach of realizing CANopen slave node. Microcontroller STC90C514RD is used as a core chip to design the control system; the design adopts CTM1050 as the CAN transceiver and uses SJA1000 as the CAN controller. And the system consists of a CANopen slave node, input module and output module. MicroCANopen, which is an open source protocol stack of CANopen, is transplanted to main controller so that the function of CANopen could be implemented. Moreover the experimental platform is built to test the design of the system. The results prove that the design is feasible and valid.
Propagation Delay Characteristics Analysis in LEO Satellite Multi-Beam Antenna Coverage
Authors: Ma Ming , Luan Xi , Li Bin , Wu Jian Jun
Published: September 2013

In this paper a calculation model of propagation delays of satellite beams is introduced for LEO multi-beam satellite communications system. Based on actual parameters and beam coverage patterns of the Iridium and Globalstar system, the maximum propagation delay differentials in several typical beams from the center to the edge of the satellites coverage are calculated. Analysis of these results can provide reference for analyzing the feasibility of LEO multi-beam satellite system compatible with uplink synchronization in LTE.
Design and Implementation of Multimedia Transmission System Based on Broadband PLC
Authors: Xie Jing Jing , Lin Da Peng , Liu Qing Yang , Long Shou Yang
Published: September 2013

In order to meet the family local area build fast video sharing and monitoring requirements, design and implement the multimedia transmission system based on broadband PLC. The system consists of a multimedia sender and a multimedia receiver, composed of the PLC module and the multimedia processing module. The PLC module achieve the data transmission in power line, multimedia processing module realize audio and video collecting, encoding, transmission, decoding and outputting function, while achieving the infrared remote control. The experimental results show that, the high performance and reliability of multimedia transmission system based on broadband power line communication, which can meet the family local area build fast video sharing and monitoring requirements.
An Application of Soft Decision for Context Recognition on Reading
Authors: Huang Yung Fa , Tsai Bang Han , Chen Ching Mu
Published: September 2013

In this paper, a context aware system is investigated for reading. The experiments are performed by two ultrasound sensors to obtain the users three scenarios of study, relax and nap. In this paper, we proposed soft decision (SD) method for three contexts to improve the accuracy rate of contexts recognition to 93% comparing with the 78% of hard decision (HD) method. In addition, to remove the external noise or interference, the moving windows (MW) are proposed to further improve the accuracy rate to 98%.
Experimental Design of Removing Sulfur Dioxide from Industrial Flue Gas with Sodium Sulfide-Containing Waste Water
Authors: Zhao Guang Yao , Zhao Feng Qing , Liu Shaoj Jie , Liu Hong Jie
Published: September 2013

The process of BaS reacting with Na2SO4 from waste water to generate BaSO4 is an ideal waste water treatment process, in spite of the shortage to generate lots of by-products, the dilute solution of Na2S. A way of using dilute Na2S solution to absorb SO2 is introduced in this paper. Some problems concerning this process were discussed.
Research on the Real-Time Infrared Tracking Athletics Image Registration Based on Computer Vision
Authors: Wang Hai
Published: September 2013

with the development of computer hardware, computer vision technology has been applied to the engineering field. Through the computer vision technology, the image track registration algorithm is conducted in-depth research, and based on the images rigid body transformation, affine, projection and linear superposition method, this paper is the reconstruction of wavelet algorithm and program. This paper uses the general image processing software MATLAB to carry on image processing for the track and field sports, and then the computer vision infrared tracking image registration is numerically simulated, we find that the standard deviation of wavelet reconstruction algorithm achieves 72.3258, which is maximum in four algorithms, entropy and joint entropy respectively reach 5.2332 and 6.2369, after pixel reaching 800, coincidence degree is still maintained at more than 90%. Through the fusion degree of image and the standard deviation of gray entropy, it can be seen that the image registration is achieved good effect.
Biotransformation of Adiponitrile to 5-cyanovaleramide by Pseudomonas Sp. SY031 Resting Cells
Authors: Chen Jing , Huang Yu Ting , Deng Shang Gui , Li Jian Rong
Published: September 2013

Resting cells ofPseudomonassp. SY031 were used for the direct transformation of adiponitrile to 5-cyanovaleramide (5-CVAM), which is an important intermediate of azafenidin, a new kind of herbicide with high efficiency, low toxicity and non-pollution. In this study, reaction conditions for this nitrile hydratase mediated conversion were optimized. It was observed that the maximum conversion of adiponitrile to 5-CVAM was in a solution containing 50 mM phosphate buffer (pH 6.4), 10 mM adiponitrile at 35 °C. 10 mM adiponitrile was completely converted into 5-CVAM and adipamide in shaking flasks with 5-CVAM as the main product (9.004 mM) and adipamide as a low yield (0.896 mM), indicating high regio-selectivity of the nitrile hydratase inPseudomonassp. SY031.
The Accuracy of Tooth Image Reconstruction from Spiral CT, Micro-CT, and Cone-Beam CT Scans
Authors: Sun Li , Guo Ya Juan , Liu Xiao Ju , Li Hong Bo , Liu Lin , Gao Yu Xuan
Published: September 2013

Objectives The aim of this study was to compare 3D accuracy of tooth image reconstruction from three kinds of CT scans using 3D superimpositional method. Methods 18 sound extracted human teeth were scanned by 3D optical system, spiral CT, micro-CT, and cone-beam CT scanner. The digital teeth images reconstructed from three kinds of CT scans were superimposed onto the standard image from optical scans respectively. Distribution patterns of shape discrepancy were presented using histogram, as well as showed in different colors on the superimposed imagines. The ratio of voluminal discrepancy versus the volume of the standard image (RVD/VS) was calculated and analyzed, using the matched-pair t-test and rank sum test. Results Compared with the standard tooth image, the average RVD/VS of digital teeth images by the micro-CT, cone-beam CT, spiral CT scans were 5.11%, 20.73%, 24.60% respectively, and there were statistically significant difference among the three kinds of CT scans (P<0.01). Significant difference were also found among the anterior teeth, bicuspids, and molars (P<0.01). Histogram gave the description about the counts and magnitude of the discrepancies. Marked by difference colors, the superimposed images could give visualized information about the magnitude and distribution patterns of discrepancies. Conclusions The digital teeth models reconstructed from the spiral CT, micro-CT, cone-beam CT images are inhomogeneous enlarged, compared with the original models. As the only realizable way to individualized FEM analysis, tooth modeling by CT scans needs more efforts and refinements to improve its accuracy.
Preparation of Polymer Brushes by Surface-Initiated ARGET ATRP
Authors: Chu Xiao Meng , Liu Shao Jie , Yang Hui Jiao , Zhao Feng Qing
Published: September 2013

This paper firstly summarized the latest research progress on the polymer brushes preparation by surface-initiated ARGET ATRP polymerization. It mainly includes the surface modifications of inorganic substrate (silicon dioxide and carbon nanotubes), and the organic substrate (cellulose and polymer microspheres). This method needs less catalyst and operates more easily, compared to the classical ATRP. Besides, it also has good polymerization controllability, and the polymer brushes have higher grafting density and molecular weight. Therefore, surface-initiated ARGET ATRP polymerization has become an effective method for modifying the surface of materials. Then, we prepared the polymer brush supported TEMPO by the surface-initiated ARGET ATRP and characterized.
Interplex for Constant Envelope in LEO Satellite Communication System
Authors: Chen Yi Jun , Wu Kang , Jiang Quan Jiang , Liu Hui Jie , Liang Xu Wen
Published: September 2013

In modern LEO satellite communication systems, numerous singnals have to be located in a same frequency band because of limited spectrum resources. Thus, a bandwidth-efficient modulation, which has constant envelope characteristics and can alleviate signal distortions when using saturated power amplifiers is necessary to combine several signals to share the frequency resource. This paper presents the analytic interplex modulation expression in LEO satellite spread spectrum communication systems, and obtains the relationship of modulation efficiency, error rate and power ratio. Lastly, the appropriate choice of power radio is obtained in the case of three signals or four signals multiplexing. The work of this paper is an important guideline for constant envelope combined methodologies in LEO satellite spread spectrum communication systems.
Feature Extraction for Electromagnetic Environment Complexity Classification Based on Non-Negative Matrix Factorization
Authors: Li Bing , Zhen Yang , Zhang Lei , Fu Zhen Hua
Published: September 2013

Assessing the complexity degree of electromagnetic environments (EME) is a typical pattern recognition problem. Feature extraction is the most significant step for EME complexity classification tasks. In his work, a novel feature extraction scheme for EME complexity classification scheme based on non-negative matrix factorization (NMF) is presented. EME signals with four complexity degree are simulated to evaluate the effectiveness of the presented method. Experimental results reveal that the NMF based features to be desirable indices for accurate complexity degree evaluation of EME.
The Development and Key Technologies of Unmanned Aerial Vehicles Mission Planning System
Authors: Zhang Hui Feng , Zhang Yan Song , Ye Wei , Zhao Liguo Lan , Zhi Huan
Published: September 2013

Mission planning system is one of the essential equipment for unmanned aerial vehicles task implementation. The development of mission planning system is necessary for the improvement of the efficiency and safety of the unmanned aerial vehicles. Comparing with foreign advanced mission planning system, this area in China is relatively undeveloped. This article focuses on the analysis of some of the key technical content of the overview of the development of the foreign mission planning, trying to provide reference to China's development of mission planning system.
Fusion and Prokaryotic Expression on the mpb83 and mpb63 Genes of Mycobacterium Bovis
Authors: Guan Jia Ning , Wang Chun Fang , Lin Jia Ming , Ma Hong Xia , Hou Shuang , Liu Xin , Gou Qiang , Jiang Xiu Yun
Published: September 2013

Based on the (Gly4Ser)3 linker, thempb83andmpb63gene were fused for raising the antigenicity of single antigen. The DNA fragments ofmpb83andmpb63were fused by splicing by overlapping extension (SOE) polymerase chain reaction (PCR) ,and the fusion gene mpb83-63 were cloned into pMD18-T vector, and then we got the recombinant plasmid pMD-83-63. pMD-83-63 and pET28a (+) were digested byBamH I andEcoR I double enzymes. The purified mpb83-63 fusion gene was subcloned into the expression vector pET28a (+),and the prokaryotic expression vector pET-83-63 was constructed. Plasmid containing pET-83-63 was transformed into competence Escherichia coli BL21(DE3).The bacterium was induced by isopropyl-β-D-thioga-lactopyranoside (IPTG) and analyzed by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE),approximately 38 kDa exogenous protein was observed on the SDS-PAGE. The protein was analyzed by using Western-blotting. The results indicated that the protein was of antigenic activity ofMycobacterium bovis. These results could serve as a basis for further studies on the usefulness of the fusion gene and its expression product in the development of DNA vaccine; living carrier vaccine; subunit vaccine and diagnostic reagents against bovine tuberculosis.
Ultrasonic Properties Effects on Gas Bubble Radial Oscillations in Liquids
Authors: Cai Jun , Chen Xiao Qian , Huang Yi Yong
Published: September 2013

A detailed analysis is provided to discuss the effects of acoustic driving frequency and amplitude on bubble radial oscillation based on a revised bubble dynamical model. Numerical study demonstrates that 3 types of bubble radial oscillation can be achieved according to different driving signal frequency; driving signal amplitude affects oscillation differently due to its value, and a certain critical value of acoustic signal amplitude was found where the oscillation is becoming chaotic.
Synthesis and Thermodynamic Properties of Magnesium Borates
Authors: Li F. , Lin Chen Xiao , Yang L.J. , Guo Ya Fei , Wang Shi Qiang , Deng Tian Long
Published: September 2013

It is well known that the magnesium borates are important materials in all fields. In this paper, the process on synthesis and thermodynamic properties of several hydrated magnesium borates including MgO·2B2O3·9H2O (hungchaoite), MgO·3B2O3·7.5H2O (mcallisterite), MgO·3B2O3·7H2O, 2MgO·3B2O3·17H2O, MgO·3B2O3·5H2O (aksaite) were summarized. The key problems existed and the new trends in the future were also carried out.
Fresh Food Quality Assurance System and Tracing Technology
Authors: Zhang Qing Ying , Liu Jing
Published: September 2013

The relation between fresh food quality control and consumers health has been stated in this article; domestic cold-chain logistic management system and the construction of food information traceable system are analyzed. The application of RFID and food tracing in the fresh food quality assurance system are discussed, and a complete set of fresh food quality assurance system has been put forward.
Comparative Research of City's Financial Sustainable Development in Shaanxi Province Based on the Factor Analysis Method
Authors: Zhou Jiong , Li Na , Li Lin
Published: September 2013

In pushing of the projects of "the Guanzhong-Tianshui Economic Zone" and "Xian-Xianyang Integration",financial development in Shaanxi has also become one of the important topics of current research.On the basis of the theory of financial sustainable development,this paper builds evaluation index system of the financial sustainable development and using empirical analysis in this paper.At the same time,its doing comparative research of financial sustainable development level of the eight major cities in Shaanxi.This papers aim is to provide some recommendations about financial policies and development strategies for the relevant departments.
Synthesis and Properties of Caprolactam-Blocked Non-Ionic Waterborne Polyurethane Crosslinker
Authors: Shen Teng Fei , Sun Ying Juan , Wu Fa Chao
Published: September 2013

A novel kind of water-borne caprolactam-blocked non-ionic polyurethane crosslinker (CL-bnp) was prepared by prepolymer mixing process, using hexamethylene diisocyanate (HDI), poly (ethylene glycol) (PEG), 1,1,1-trimethylolpropane (TMP) and caprolactam (CL). The physical properties of prepared blocked polyurethane crosslinker dispersion, such as viscosity, pH and storage stability were measured. The chemical structure and its de-blocking temperature (Tde) were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), and thermo-gravimetric analysis (TGA) techniques. The FTIR confirmed that the NCO groups of the original HDI molecule were completely blocked by this blocking agent. The thermal analysis measurements revealed that the maximum de-blocking ratio temperature of CL-bnp was around 160-170 °C
Preparation and Properties of the Novel Adsorbent Agent for Juices Clarification
Authors: Li Zeng Xin , Wang Guo Ming , Liang Qiang
Published: September 2013

A solid adsorbent was made from bentonite and chitosan which can be used to clarification of apple juices.Chitosan loading rate on bentonite was up to 31.6% at 400 °C. Effects of important variables, such as the amount of adsorbents, pH value of juice, reaction time and temperature, etc., were investigated for analyzing the clarification effects. The optimum condition is as follows: the amount of absorbents 10 g · L-1, a duration period of 4 mins at temperature 25 °C, and transmittance of more than 80%.
Thermodynamic Properties of Alkalis Borates
Authors: Zhang Si Si , Lin Chen Xiao , Guo Ya Fei , Wang Shi Qiang , Deng Tian Long
Published: September 2013

In the paper, the progresses on the thermodynamic properties of several alkalis borates including lithium borates, sodium borates, potassium borates, rubidium borates and cesium borates at present were summarized, and the new trend in the future was also pointed out.
Applied Research Development of Flotation Column in Micro-Fine Hematite Flotation
Authors: Wang Wei Zhi , Cnen Li Pingi , Yu Tian Yi
Published: September 2013

Flotation column was originated from foreign countries, firstly it was mainly used in coal classification, then it has been used in nonferrous metal classification, due to the hematite iron ore resources tend to be poor, fine and complex, flotation column has the congenital advantage of micro fine minerals, therefore, this paper is according to the beneficiation technology of fine hematite ore in domestic and foreign ,through the characteristic of flotation column which is applicable to the processing of fine mineral, have good separation effect, and high enrichment ratio , flotation column are introduced in fine particle hematite beneficiation in some applications, Flotation column has a wide range of application prospects in our country fine mineral separation.
Research on Preparation of Nano-Hydroxyapatite Biological Material
Authors: Bi Yong Guang , Xu Xu Si
Published: September 2013

In order to obtain hydroxyapatite nanoparticles smaller particle size distribution is relatively uniform, spherical shape and the particle sample, by exploring the reaction temperature, reaction time, concentration and pH on hydroxyapatite nanosize and distribution impact conditions, the results show that when the reaction temperature is 50°C; reaction time 2h; concentration 0.6mol/L; pH value of 10, the prepared nanohydroxyapatite regular shape, less agglomeration, uniform size high crystallinity. Description concentration and pH on nanoparticle size has a significant impact.
Theoretical Analysis of Axial Compression of Reinforced Concrete Short-Columns Strengthened with CFRP Sheets
Authors: Wang Xiao Chu , Nie Hong Bin , Zhang Jian Peng
Published: September 2013

CFRP cloth strengthening concrete column is divided into constrained and unconstrained District area by the reasonable arch axis theory, then we obtain the effective confinement factor of reinforced columns, base on lateral stress formula of scholar XIAO Y and concrete compressive strength model of Karbhari, V. M, derive from the increasing coefficient of carrying capacity, according to the effective confinement factor and the increasing coefficient of carrying capacity, finally we obtain the bearing capacity formula of the modified compression column strengthened with CFRP sheets.
Mechanical Properties of 35CrMoA Steel at High Strain Rate Loading
Authors: Hu Wen Jun , Huang Xi Cheng , Zhang Fang Ju , Wei Li Ming
Published: September 2013

The tensile properties of alloy steel 35CrMoA were measured by dynamic tension experimental apparatus, and the stress-strain curves of the material at strain rate range from 10-2/s to 103/s were obtained. The fracture appearance and metallurgical structure were observed for the recovered specimens. The influence of strain rates on mechanical properties and microstructure of the 35CrMoA steel was analyzed. Based on the experimental data of mechanical properties, the JC constitutive parameters were fitted for 35CrMoA.
Application of Fluorescence Material in Anti-Counterfeit Field
Authors: Huang Xiao Jun , Luo Shi Yong , Zhang Xin Lin
Published: September 2013

With the expansion of the security market, the demand of the anti-counterfeiting technology is becoming more and more big, and the requirement of the anti-counterfeiting technology is becoming more and more is also high. In this paper, a simple summary of the application of fluorescent material in the anti-counterfeiting field is finished. And analysis of the current situation and development tendency of fluorescent material at home and abroad is given in this paper.
Analyses for Statistic Distribution of the Welded Joint Fracture Toughness about X65 Pressure Pipe Steel
Authors: He Bo Lin , Yu Ying Xia , Lei Si Yong , Huo Li Xing
Published: September 2013

It is important for the design engineer to realize that scatter and variability of materials properties are inevitable and must be dealt with appropriately. On occasion, data must be subjected to statistical treatments and probabilities determined. The fracture toughness of pipe steel has great effect on the safety of welded pressure pipe. The fracture toughness test of circumferential welded joint was carried out in this paper for X65 pressure pipe steel. The fracture toughness experimental results were analyzed by using computer program developed by ourselves. The distribution of weld fracture toughness of X65 pressure pipe steel which may accord with normal distribution, lognormal distribution or weibull distribution can be determined by calculating the results only one time. The program, which plays an important role in structure reliability analysis, can be used to determine the probability statistic distribution of the mechanical properties. The calculated results indicate that the weld fracture toughness of the X65 pressure pipe steel can either accord with normal distribution, lognormal distribution or weibull distribution, but the optimum fitting distribution of the fracture toughness is weibull distribution.
Analysis on Construction Control of Continuous Rigid Frame Bridge in Winter Intermission
Authors: Yang Ya Xun , Yang Zhi Kui , Qiao Chao
Published: September 2013

Cantilever construction has been commonly used in construction of continuous rigid frame bridge and construction control plays an important role in ensuring the line-type and the forced state. Because of long construction period, it tends to construct across the winter possibly. Considering that the impact of winter intermission on construction control of pre-camber is a problem which the constructors and control staff must pay attention to, this paper takes the impact of winter intermission on construction stage into consideration. The research has guiding significance for the construction of the similar bridge to a certain degree.
Analysis of the Microstructure of High Chrome Steel for Roller under Forged Annealed State
Authors: Yang Jie , Quan Fang
Published: September 2013

Nowadays, the high chrome steel for roller is increasingly widely used in cold-rolled industry. The microstructure of rollers under forged annealed state has a significant influence on its final mechanical properties. This paper investigates the annealed microstructure of a new high chrome steel for roller, using methods of SEMDESXRD and hardness tests. The results show that the spheroidizing annealed high chromium steel is constitutive of ferrite and globular cementite, and the microstructure is relatively reasonable. But there are disadvantage characters such as small holes in the vicinity of the grain boundary, and residual lamellar pearlite exists in local area. In this paper, generation mechanisms of these characters are explained, and prevention methods are given for the weakness of the high chorme steel for roller.
Anti-Oxidation Coatings for Steel Billets at High Temperature
Authors: Xu Ying , Wang Peng , Lu Jian
Published: September 2013

A new kind of anti-oxidation coating for steel billets at high temperature was prepared. The resistance property of the coatings for oxidation was investigated. The result indicated that the coatings could decrease the oxidation loss at 1300¡æ. The anti-oxidation mechanism of the coatings on the surface of steel billets at high temperature was proposed at the same time.
The Microstructure and Magnetic Properties of TbDyHo (FeMn)1.95 Alloys
Authors: Lin Qi Feng , Zhang Hong Bo
Published: September 2013

The composition dependence of crystal structure, lattice parameter, micromorphology, Curie temperatures, magnetocrystalline anisotropy constant of Tb0.29Dy0.48Ho0.23(Fe1-XMnX)1.95(x0.3) alloys were investigated by the experiment. X-ray diffraction patterns demonstrate the Tb0.29Dy0.48Ho0.23(Fe1-XMnX)1.95(x0.3) alloys possess MgCu2-type cubic Laves structure. The lattice parameter of Tb0.29Dy0.48Ho0.23(Fe1-XMnx)1.95alloy increases with increasing of x value. The Curie temperature Tcdecreases from 375°C for x=0 to 316 °C for x=0.05, 265°C for x=0.1. The magnetocrystalline anisotropy constant K1of Tb0.29Dy0.48Ho0.23(Fe1-xMnx)1.95(x0.3) decreases slightly with the increasing of x value. The magnetostriction was examined under applied magnetic field H in the room temperature. The Tb0.29Dy0.48Ho0.23(Fe1-xMnx)1.95(x0.2) alloys have the character of giant magnetostrictive in room temperature. With the increasing of Mn concentration, the magnetostrictive of Tb0.29Dy0.48Ho0.23(Fe1-xMnx)1.95(x0.2) alloy decreased.
On Research of Basalt Fiber Used in Asphalt Concrete
Authors: Li Jian Jun , Liu Yan Chun
Published: September 2013

As a new type of green material with excellent physical and chemical properties and mechanical properties. Basalt fiber are widely used in the field of civil construction. This paper focused on the use of basalt fibers to improve the mechanism of asphalt concrete, demonstrated the prospects and market value of the basalt fiber that are widely used in asphalt concrete
Adsorption of Copper Ions and Methylene Blue on Natural Wheat Straw and Modified Wheat Straw in Single and Binary System: Column Mode
Authors: Su Yin Yin , Xiao Wei , Jiao Yu Bin , Han Run Ping , Li Yan Qiang
Published: September 2013

Adsorption of copper ion and methylene blue (MB) ion from aqueous solution was performed by natural wheat straw (NWS) and modified wheat straw (MWS) with citric acid (CA) in fixed-bed column. Adsorption behaviors of single system and binary system were compared at same experimental condition. There was higher adsorption capacity of MWS for binding Cu2+ and MB. In the binary system of Cu2+ and MB coexisted in solution, there was competitive adsorption. The adsorption quantity of Cu2+ or MB decreased with MB or Cu2+ existed. NWS and MWS can simultaneously adsorb Cu2+ and MB from mixtures.
Research on Forging Process for Fractured Connecting Rod
Authors: Feng Wei Dong , Pan Ji Hui
Published: September 2013

During forging of as-cast for fractured connecting rod, the key is to determine heating temperature and to control cooling speed after forging. They two points are correlated with each other. To assure metal fluidity in the course of striking and forging, fillet should be enlarged at transit between ribs and web. Wrought parts shall be subject to normalizing by residual heat from forging process. Its metallographic structure consists of pearlite and ferrite. Content of ferrite should not exceed 35%. In addition, it should be such that the fraction for volume of ferrite get bigger and grain should be greater and evenly distributed.
Study on the Bonding Strength of Arc Spraying Amorphous Coating
Authors: Yang Yu Fang , Zhang Jing Yao
Published: September 2013

The cored wires were fabricated using five kinds of amorphous compositions with high Fe content. The cored wires were sprayed to form coatings by high velocity arc spraying (HVAS) after optimizing technology. We studied the bonding strength of the coatings. The results are as follows: combining ways between coating and substrate are mainly mechanical combination. The average bond stress is above 30 MPa.
Effects of Attapulgite on the Isothermal Crystallization Behavior of Poly(Butylene Succinate-co-Butylene Adipate)
Authors: Qi Zhi Guo , Chen Jin Nan , Guo Bao Hua , Zhang Yu
Published: September 2013

Poly (butylene succinate-co-butylene adipate)/attapulgite nanocomposites were prepared by melt mixing in a HAAKE mixer. The crystallization kinetics of PBSA and its nanocomposites was studied under isothermal conditions by differential scanning calorimetr. The isothermal crystallization kinetics results indicated that attapulgite can induce heterogeneous nucleation, resulting in an improvement on the crystallization temperature and crystallization rate. Both the PBSA and its nanocomposites were correlated to the spherulitic growth form.
Simulation on Roadheader Rear Supporting Leg Vibration Moulding
Authors: He Tao , Yang Xia , Wang Cheng Jun
Published: September 2013

Using three-dimensional discrete element method (DEM) to simulate the vibration of the evaporated pattern casting molding process, accordingly summary the influence law of vibration direction effecting on dry sand filling. The results show that the 3DOF vibration filling effect is best, 2DOF takes second place, 1DOF is the worst. In the 2DOF vibration the YZ direction is best, XY direction worst. Meanwhile Y direction vibration works best in 1DOF vibration, second is X direction, and Z direction gets worst.
Structure Optimization Analysis and Application of Continuous Beam Based on ANSYS
Authors: You Chao , Wang Xian Shu , Zhu Yong Xiang
Published: September 2013

The displacement and the angle of the continuous beam are researched under the complex loads in this paper. Based on the analytical model suggested by the authors, the nested dynamic objective function is determined to form the optimization of beam deformation, and a program analysis of typical examples is presented. It is compared both analytical model and simulation results based on finite element software of ANSYS10.0. The results show that the analytical model suggested by the authors is correct.
GA Wavelet Transform Direction for γ-Phase Shaped Finite Element Analysis
Authors: Meng Lei
Published: September 2013

1040 °C was studied during the period imposed 137MPa tensile creep nickel-base single crystal superalloys γ/γ the evolution of two-phase approach. ANSYS finite element method is using a single crystal alloy with / without external load when the Von Mises stress in the gand γ two phase distribution. The comprehensive analysis of the formula, the coefficient values usually experience, not very accurate, this article dealing with GA coefficient. This algorithm uses orthogonal crossover to generate initial population and uses elitist-crossover to increase the good patterns of the population and uses hybrid mutation to increase the ability of local and global optimization. It has shown fascinating results when being used in the optimization of multimodal function. The results showed that: In the creep period, the corresponding cubic γ along the von Mises stress and strain energy density of the crystal face to form raft-like organizations.
Analysis of Vibration Coupling of QCM Sensor
Authors: Jiang Hai Feng , Chen Chao Jie , Li Hui Hui
Published: September 2013

The constant matrix and piezoelectric equations of quartz crystal material are introduced in this paper. Vibration characteristics of quartz crystal is analyzed under several important vibration mode and coupled modes are explained. At last, some measures to suppress the QCM vibration coupling is presented.
Research on Job Scheduling Problems with DMS for Cell Controller Based Bogie
Authors: Wang Xian Hong , Xu Wen , Feng Wei Dong
Published: September 2013

For tackling job scheduling problems encountered with discrete manufacturing system for 380km/h motor bogie, Object-oriented Petri Net based Job-Shop Cell Controller System (OPNCC) was brought forward identifying categories of all objects within cell control model, describing relationship between categories, analyzing and recognizing cell control logic through the dynamic behavior of physical objects and introducing control decision and strategy into the control logic of as designed OPN model, thereby constituting a complete object-oriented cell control model. With improved genetic algorithm, it can offer dynamic optimization to balanced production of multiple work pieces on several machine tools so that the machine tools can be utilized to a maximum extent.
Research of Loads State of the Upper Part of the Tower Crane Based on Guide Wheel Pressure of Climbing Frame
Authors: Li Bin , Tao Xin , Zhang Yan , Xu Li Ze
Published: September 2013

The force of tower crane is extremely complex when climbing, and climbing frame is the key to structure loaded by forces of climbing working condition, which supports all loads of the upper part of the tower crane when climbing. The guide wheels are arranged on climbing frame, and play the guiding role between climbing frame and tower body. The guide wheel pressure can reflect the upper horizontal loads and unbalanced moment, and climbing press reflects the upper vertical loads. This article is based on the climbing press and guide wheel pressure to analyze loads state of the upper part of the tower crane when climbing, ensure the upper load values in a safe range when the tower crane climbing.
Theoretical Calculation of the Detonation Parameters of ANPyO and Comparison between ANPyO and me (ANPyO)x on their Performance
Authors: Du Yao , Wang Yan Hong , Li Ya Jin , Zheng Zhi Hua , Wang Jian Long
Published: September 2013

The detonation parameters of 2,6-diamino-3,5-dinitro-pyridine-1-oxide (ANPyO) were calculated systematically. The explosive decomposition products were predicted by B-W rules, and the velocity of detonation was estimated by Rothsteines method and Kamlet equation respectively. By means of Cooper method, the C-J pressure was evaluated. The differences of performance and detonation parameters between ANPyO and Me (ANPyO) x were also described. It is shown that the overall performance of Me (ANPyO) x is more excellent.
Human Factors Analysis of Virtual Assembly Car Door Based on the CATIA Virtual Environment
Authors: Mu Long Tao , Cao Yan
Published: September 2013

Based on CATIA software to create a virtual car assembly line, the virtual assembly technology briefly analyzed state development, pointed out the role of actual production used virtual assembly technology, combined an instance of the car door assembly works with lots of human factors analysis. Through assembly modeling, simulation, analysis and optimization, aimed to reduce labor intensity, decline action fatigues, acquire the best assembly path to improve the productivity and quality of assembly of the car assembly quality.