bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation of Virgin Coconut Oil Nanoemulsions by Phase Inversion Temperature Method
Authors: Hasan Hafiz Mahmood , Leanpolchareanchai Jiraporn , Jintapattanakit Anchalee
Published: December 2014

Presently, the low energy emulsification method; phase inversion temperature (PIT) method offers a convenient mean of nanoemulsion formation for the incorporation of fragile substances. The aim of the current study was to prepare coconut oil nanoemulsions using cremophor RH 40 as nonionic surfactant in the light of PIT method. The suitable composition of coconut oil, cremophor RH40 and water was investigated by construction of ternary phase diagram. The PIT of system can be adjusted to 75 °C by adding NaCl at the concentration of 6%(w/w). Stable translucent nanoemulsions with particle size in range of 20-100 nm and PDI<0.2 can be formed at the constituent proportions of 5%-30%(w/w), coconut oil, 10%-80%(w/w) cremophor RH40 and 5%-85%(w/w) NaCl solution of 6%(w/w). All formulations were stable for up to 2 months when stored at 4, 30 and 40 °C and protected from light.
Calibration Methods of Silicate Analyzer
Authors: Wang Long , Xu Yu Feng
Published: December 2014

Silicate analyzer is broadly used for determination of silicate in water. It is very important to evaluate its performance and needed to be calibrated by metrology organizations. But there is no standard or regulation for silicate analyzer calibration in our country. The calibration methods of silicate analyzer was suggested on the basis of the function characteristics of the instrument. The experimental results prove that this method can evaluate the performance of silicate analyzer accurately and comprehensively.
Research and Development of Components Technology Selection Database Based on the Network
Authors: Wang Wei , Lu Wan Tian , Liu Xiao Wei , Jin Dong Dong , Wang Qing Li
Published: December 2014

Aiming at our country existing components database has some shortages, such as the data is not complete, scope of shortcoming, we develop a parts optimization library on the network based on the data of large number of parts. Firstly, expounds the overall structure of the database and research on system information technology. And then elaborate the main function modules of the system. Lastly, test the validity and practicability of the system combined with a specific example. After verification, the system can be very good to meet the needs of the enterprise to the type of resource demand.
Numerical Study of the Influence of Ambient Pressure on the Inerting Effect of an Aircraft Fuel Tank Inerting System
Authors: Liu Dong Jie
Published: December 2014

The numerical study of the influence of the ambient pressure of the fuel tank on the inerting effect of an aircraft fuel tank inerting system was carried out. The mathematical model of ullage equilibrium oxygen concentration has been established using the differential time calculation method based on the mass conservation and ideal gas state equations. The variations of ullage oxygen concentration and dissolved oxygen concentration in the fuel with time under different working conditions have been obtained. The results have shown that the as the ambient pressure of the fuel tank became lower, the speed of the decreasing of oxygen concentration of the fuel tank ullge and the dissolved oxygen concentration of the fuel was slower.
Research on Triangularization of Parametric Surface Based on Surface Curvature
Authors: Yang Wei Min
Published: December 2014

In five-axis tool path planning, interference between the cutting tool and parametric surface is very critical. One way of doing interference detection is first to discretize the surface. In this article we develop a new approach to discretize parametric surface adaptively by applying curvature sphere. Layer by layer the original surface is discretized into triangle meshes bases on the polyline between the triangulated and un-triangulated areas of the surface. Triangles generated with our method are adaptive, which means the density of the triangles changes with the local curvature value of the surface. We also develop a method to deal with triangle meshes overlapping problem. So triangle meshes generated with our algorithm is without gaps or any overlapping problem. Finally a criterion is suggested when the generation should stop. The algorithm has been tested for some parametric surfaces and the result turns out to be satisfactory.
Calculation of Elliptic Sphere Form Error Using a Differential Geometry Algorithm
Authors: Zhang Lei , Huang Chuan Hui , Liu Li Li , Lu Xing Hua , Li Jia Xin
Published: December 2014

To address the calculation of elliptic sphere form error, a differential geometry algorithm is proposed and the presented model is answered by fminsearch function in Matlab. An example shows the effectiveness of the proposed algorithm.
Passive Wireless Communication Technology Applied in Green Building
Authors: Feng Xian Jie
Published: December 2014

The passive wireless communication as a kind of advanced new technology, has been widely applied in the green energy-saving buildings. It is through the control of building system terminal equipments, data exchange mode and control layer, and update the mechanical and electrical equipment control logic, to achieve the purpose of implementation of green energy-saving renovation project. The use of this technology to radically reduce the construction cost, and not just make the energy consumption of building system control, and a substantial reduction in cable laying, metal used, battery replacement, pollutants brought about by the construction cost. Advanced passive wireless sensor, using energy collection technology, and make full use of indoor light energy in daily life, human activities of mechanical energy, etc., to achieve the purpose of automatic control of the green building system.
Preparation of B4C-CeB6 Porous Composites by Hot Pressed Sintering
Authors: Peng Ke Wu , Ma He Li , Gong Chang Wei , Wang Yan , Tan Zhao
Published: December 2014

B4C-CeB6 porous composites are prepared by hot pressed sintering between 1900°C and 2000°C, and mechanical properties and phase composition of B4C-CeB6 porous composites were tested. The results show that the porous rate of B4C-CeB6 porous composites ranges between 30%-48% at sintering temperate 1900°C-2000°C. Porous rate of B4C-CeB6 porous composites is decreased with temperature be increased. Flexibility strength of B4C-CeB6 porous composites is greatly improved compared with that of monolithic porous boron carbide. B4C react with CeO2 to completely form CeB6 in porous composites.
Study on the Heat Shrinkable Property of Opaque COC/PETG Film
Authors: Dong Xing Guang , Zhou Shen Jie
Published: December 2014

This paper has studied heat shrinkable properties of COC/PETG blending film with microvoids inside. The shrink curve, shrink force, film structure and light barrier effect were studied by use of electron stretcher, SEM, shrink force tester, ultraviolet spectrophotometer and so on. The results indicated that COC/PETG blending film with many microvoids inside can receive more than 70% shrinkage and lower shrink force by comparing transparent PETG shrink film. At the same time, COC/PETG shrink film has excellent UV-light barrier effect from 310-400nm which also has good visual light barrier effect from 400-800nm because of it 85% opacity and 25% transparency.
Syntactic Foam Prepared with Glass Hollow Spheres of Designed Size and Wall Thickness Ratio
Authors: Chen Zhuo , Huang Zhi Xiong , Jiang Bing Yan
Published: December 2014

A new type of syntactic foam fabricated with four types of hollow microspheres (HGMs) were prepared and its compressive properties were tested following ASTM D 695-96 standard. The HGMs were designed to have specific size distribution and wall thickness. The compressive strength and modulus of the new syntactic foam were compared with those prepared with single type of HGMs. With same density, the new syntactic foam have better compressive properties.
Theoretical Analysis on Thermal Shock Resistance of Refractories
Authors: Ma Tian Fei , Wang Xin Fu , Zhao Liang
Published: December 2014

So far, thermal shock theories have not been well verified in refractories. This paper compared hypothesis and failure mechanism of two typical thermal shock theories, analyzed the applications of two typical theories in refractories from working environment, failure process and microstructure differences. And thinks that the critical stress fracture theory is suitable for nearly ideal brittle refractory with ceramic bond and used in thermal shock extremely harsh environment; thermal shock damage theory suites to evaluate multiple loops thermal shock. Analyzed the factors influencing the thermal shock parameters, and discussed Ways to improve the thermal shock resistance of refractories from destructive force and resistive force of refractories. Conclusions are that choosing small swelling expansion rate and high thermal conductivity material, reducing the micro stress concentration and adding flexible phase, these three methods can be used to make refractories with good resistance to thermal shock.
Effect of Eu/Co Doping on the Resistive Switching Properties of BiFeO3 Thin Films
Authors: Zhu Yong Dan , Hu Cheng , Zuo An You
Published: December 2014

BiFeO3 and Eu/Co doped BiFeO3 thin films have been grown on Nb:SrTiO3 substrates with pulsed laser deposition using the same growth conditions. It was shown that the characteristic of resistive switching would be enhanced by Co doping. By changing the polarity of the external voltage, the BiFe0.95Co0.05O3 is witched between multilevel stable resistance states without an electroforming process. The resistance ratio is larger than two orders of magnitude and shows stable resistance states. The resistive switching is understood by the electric field-induced carrier trapping and detrapping, which changes the depletion layer thickness at the interface, oxygen vacancy and Co doping play important role in enhanced RS behavior. Keywords: Resistive switching, element doping, resistive switching mechanism.
Microstructure and Properties of Niobium Microalloyed Pipeline Steel in CSP and Steel Pipe Produced by ERW
Authors: Gao Ji Xiang , Li Lie Jun , Wei Shao Jun
Published: December 2014

Based on the basic characteristics of Compact Strip Production (CSP), this paper studies the composition design of Nb micro-alloyed pipeline steel, proposed eliminating mixed grains production control technology, also studied the microstructure and properties of steel pipe produced by Electric Resistance Welding ( ERW). Its performance meets API 5L specification and the project technology conditions, used for materiel of steel pipe for oil and gas pipeline project.
Study of Core-Shell Structure Poly(vinyl Acetate-Butyl Acrylate) Emulsion Particles Modification
Authors: Li Gang , Wang Ting , Fu Xin , Gao Tian Ming , Huang Mao Fang
Published: December 2014

Core-Shell structure Poly(vinyl acetate-butyl acrylate) emulsion is prepared by the semi-continuous emulsion polymerization. And the emulsion particles are modified by ethyleneglycol dimethacrylate crosslinker (EGDMA) to improve the properties of films in the different reaction stages. Then the emulsion particles structure is characterized by transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FT-IR). The particle size and distribution are characterized by Zata Potential- Particle analyzer, as well as analysis of the film mechanical properties and thermal performance. The results show that the emulsion particles possess a clear core-shell structure. The performance of the emulsion film show better when 1% and 0.5% EGDMA are added in the second reaction and the third reaction stage respectively under the emulsion preparation process.
Chemical Kinetic Studies on Polyurethane Formation of GAP and HTPB with IPDI by Using In Situ FT-IR Spectroscopy
Authors: Tanver Abbas , Huang Mu Hua , Luo Yun Jun , Hei Ze Huan
Published: December 2014

The high-performance solid propellants play very important role in defense industry, which required highly energetic binders with good mechanical properties. In order to get the activation parameters for energetic binders, In-Situ FT-IR spectroscopic technique is used to study the chemical kinetics of glycidyl azide polymer (GAP) and hydroxyl terminated poly butadiene (HTPB) with isophorone diisocyanate (IPDI) at various temperatures. The reaction was followed by monitoring the change in intensity of the absorption band of NCO stretching at 2257cm-1 and CO stretching at 1731cm-1. The polyurethane reaction has been found to be second order and the rate constant seems to be different between GAP/IPDI and HTPB/IPDI due to reactivity difference of OH groups. Dibutyl tin dilurate (DBTDL) was used as curing catalyst. By using Arrhenius and Eyring equations, the activation parameters were obtained at different temperatures (60, 70, 80 and 90°C). The apparent activation energy for the two systems GAP/IPDI and HTPB/IPDI were found to be 63.51 kJ mol-1 and 41.06 kJ mol-1 while the enthalpy and entropy of activation were found to be 62.35 kJ mol-1 and-36.24 kJ.mol-1K-1, 39.08 J mol-1 and-98.84 J mol-1K-1 respectively.Key words: In-Situ FT-IR; glycidyl azide polymer (GAP); hydroxyl terminated poly butadiene (HTPB); chemical kinetics; polyurethane; dibutyl tin dilurate (DBTDL).
Compressive Behavior of Steel Plate-Concrete Structures Using Cementless Concrete
Authors: Park Ho Young , Choi Byong Jeong
Published: December 2014

The domestic research of the steel plate concrete structures have been focused on the nuclear power plant structures that usually require high strength. This research tried to establish some basic design information of SC structures using cementless concrete. This paper studied on the compressive characteristics and effective length factors subjected to the concentrated compression loadings. The experimental results in average was 98% of the value calculated from the equation in KEPIC-SNG, and the experimental results was 92% of the value calculated from the equation in JEAG-4618.
Investigation on Properties and Flow Degree of Rubberized Mortar under Dynamic Load in Metro
Authors: Yu Jun , Zhu Hai Bin , Wang Ke Zhong
Published: December 2014

It is one of focus topics that metro vibration affects foundations and environments. Assumed that crumb rubber mortar can be injected into foundations to form separate vibration layerbecause crumb rubber mortar is with better ductility and properties of vibration resistance,the layer decreases the effect of transportation load on foundation. Different diameters and volumes of rubber power were joined into the mortar to form rubber mortar by experiments. Then their flow degree and strenghth were measured and compared with ordinary mortar. The result shows that the rubber with smaller diameters can improve flow properties of mortar. When the volume inserting is ten percent of total sand volume, the flow property is best. The rubber mortar with best flow property was conserved for twenty-eight days. The damp property and impact resistant were determined under metro dynamic load. The experiment found that when the volume inserting is twenty percent of total volume, the damp value was improved twenty percent with twenty-five percent of absorbing energy and better separate vibration property. Therefore, the separate vibration layer can largely reduce the effect of vibration from metro and decrease the settlement of foundations of metro.
Uniaxial Compression Creep Prediction of Asphalt Mixture Using the Eshelby Equivalent Inclusion Method
Authors: Wu Jun
Published: December 2014

Asphalt mixture was simply treated as a two-phase composite, in which coarse aggregates are embedded into asphalt mastic matrix. According to the elastic-viscoelastic correspondence principle, an elastic micromechanical method is extended for predicting viscoelastic properties of asphalt mixture, which is simply treated as elastic coarse aggregate inclusions periodically and isotropically embedded into viscoelastic asphalt mastic matrix. The Burgers model is adopted for characterizing the matrix mechanical behavior, so that the homogenized relaxation modulus of asphalt mixture in compression creep is derived. After a series of uniaxial compression creep tests are performed on asphalt mastic in different stress conditions in order to determine the matrix constitutive parameters, the presented framework is validated by comparison with the experiment, and then some predictions to uniaxial compression creep behavior of asphalt mixture in different stress conditions are given.
A Review of Numerical Models for Twin-Roll Casting
Authors: Park Jong Jin
Published: December 2014

Converting the viscosity of an incompressible nonlinear viscous fluid to the proportional constant of the flow rule of Mises material, the melt, the mushy state, and the solidified in twin-roll casting were able to be regarded as an incompressible nonlinear thermo-viscous material. Recently, this thermo-mechanical process and the shrinkage fit of a roll have been numerically modelled. Some of these models are reviewed and discussed in the present study.
Case Analysis on PTH Fracture Caused by Twin Copper
Authors: He Xiao
Published: December 2014

An actual case of PTH fracture after soldering process was studied. By means of cross section analysis using metallography microscope and SEM, together with thermal analysis results, root cause of PTH fracture was concluded that a high density of twin copper weakened the mechanical strength so seriously that PTHs could not undergo thermal stress from soldering process, and higher CTE was attributed to an accelerative factor. Moreover, it is recommended to enhance current density properly and make sure the effectiveness of electroplating additives to prevent twin copper by theoretical analysis.
Design of Welded Pipe Forming Machine Based on Siemens S7-400
Authors: Ge Xiao Zhong
Published: December 2014

The machine realized the function of positioning and calibration by using Siemens MM440 and absolute encoder. It accomplished the structured program and optimized HMI screen, the forming machine can produce all kinds of different diameter welded pipes without changing rollers.
Research on Helical Milling Specialized Tool Based on Chip-Splitting Mechanism
Authors: Chen Qing Liang , Chen Xue Mei , Duan Zuo Heng , Cun Wen Yuan
Published: December 2014

Compared with conventional push drilling, helical milling (orbital drilling) shows great advantages in aeronautical hard-machining materials hole making. However, helical milling of titanium alloy and carbon fiber reinforced plastic (CFRP) under dry cut condition still faces challenges such as burr of titanium alloy hole exit and CFRP hole delamination. In order to solve these problems, an innovative helical milling tool with distributed multi-point front cutting edge is designed based on the chip-splitting mechanism and tool movement feature. The description of cutting edge movement track and simulation of chip shape is used to analyze different functions of front and peripheral cutting edges, the chip-splitting result and the specialized tool's service life. The helical milling experiments are aimed to test the performance of the specialized tool compared with that of traditional end mill. Results show that the specialized tool can machine titanium hole free of burr and CFRP hole without delamination under dry cut condition. The specialized tool has a longer service life with its machining capacity amounting to 80 titanium holes and 65 CFRP holes..
Water Jet Technology Head Vibration due to Water Pressure Change
Authors: Bicejova Luba , Pavlenko Slavko
Published: December 2014

The following paper analyses effects of pressure values of a high pressure pump on technology head vibrations origin at hydroabrasive erosion in production process. The aim is to focus onto one of possible sources of undesirable vibrations which can be subsequently influencing the cutting surface quality.
The Analysis of the Temperature Field of EDM Surface Strengthening Titanium with Mist Medium
Authors: Cai Lan Rong , Hu Xiao Jun , Li Min
Published: December 2014

A simulation model established by finite element methods using ANSYS software shows the distribution temperature field on titanium surface during misting strengthening process. The actual strengthening experiment was conducted. The results show that the simulation calculation results are consistent with those of experiments under the same strengthening experimental conditions. The simulation model is benefit to strengthening quality forecast, parameter regulation and optimization in the EDM strengthening process.
Mechanical Property Analysis of the Boom Considering Large Deformation Effect
Authors: Li Hong Yan , Li Xiu Li
Published: December 2014

Finite element analysis on the strength and stability with the full extension job is researched for some special truck crane. The different telescopic parts are connected by the slider, which can transfer load through mutual contact and deform. Stress concentration always appear with the traditional method, so the contact algorithm is vital to the simulation. The intensity and stability of the boom is simulated with finite element analysis with the degree coupling technology, the simulation results have significance for further optimal design of the boom.
A Graphical Symbol for Machining Process Information Description Using Model-Based Definition Technology
Authors: Tian Fu Jun , Zhang Hong Qi , Chen Xing Yu , Zhou Hong Qiao , Chen Di Jiang
Published: December 2014

To realize the process information sharing and three-dimensional annotation, a standardization description model for machining process information was proposed, which including three layers, natural language description layer, object oriented language description layer and symbolic language description layer. By extension the graphical symbol of surface texture, integrated with machining allowance, surface lay and direction, surface roughness, machining method and technical parameters, equipment, fixture, cutting tools, test information, and sequence number, a graphical symbol for three-dimensional machining process information was proposed. Then formulated the annotation specification of the graphical symbol, including annotation plane, position and orientation, associativity, indication of two or more machining step, restricted area and color using. Finally, a three-dimensional machining process planning system was developed, and a part machining process annotation was taken to illustrate the validity of the graphical symbol.
Study on the Design Factors Affecting the Operating Actions that Can Be Used Easily at the Design Stage
Authors: Pan Li , Cho Heung Jae , Park Jae Il
Published: December 2014

Evaluating the assemblability at the design stage is important because of the cost competitiveness of company. However by compared results of the sequence of bottle neck process of production stage, the Lucas DFA (Design for assembly) and Boothroyd & Dewhurst DFA is not enough to evaluate the assenblability accurately. Therefore, in this paper, we proposed three design factors which is affecting assembly but not mentioned at DFA. These design factors would help the designers to evaluate assemblability and improve the productivity.
Study on Dynamic Characteristics of the Bridge Crane Hoisting Mechanism Based on State-Space Method
Authors: Liu An , He Wei , Li Zhe Kun , Cheng Li
Published: December 2014

The dynamic characteristics researches of the bridge crane hoisting mechanism were summarized. Four-freedom-degree elasticity vibration model was established according to actual working condition of bridge crane hoisting mechanism. It considered the impact of the input torque, the stiffness of wire rope and so on. The paper applied to the state-space method to solve the numerical value and simulation based on the Matlab/Simulink software. It contained the hoisting displacement and speed curve, and the bridge structure volatility curve. The simulation results show that the correctness of the model, which lay the theoretical basis for all kinds of hoisting mechanism dynamic characteristics research in dynamic problems
The Mechanical Properties Comparative Analysis for Socked and Non-Socketed Composite Pile
Authors: Chen Heng , Ma Ke Sheng
Published: December 2014

For socked and non-socketed piles in the different mechanical behavior under static and dynamic loads, the paper use ABAQUS to model, simulate the pile , the soil interlayer thickness between the bottom of the pile and bedrock are 2m, 4m under vertical load and Earthquake, cushion cap, pile and pile soil stress situation found non-socketed piles when the soil interlayer thickness within a certain range, the composite pile small subside under dynamic, static loads, the non-socketed piles can better take advantage of the pile soil has a good seismic performance in the earthquake.
Dynamics Analysis and Parameter Optimization of New Vibration Platform
Authors: Liu Yan Bin , Yin Chen Xu , Ma Jia Jia
Published: December 2014

A new type of vibration platform was presented and its dynamic characteristics was studied in this paper, A virtual prototype model of vibration platform was built by using software Soldworks and ADAMS.The flexible body model of spring was built based on ADAMS flexible module,rigid-flexible coupled dynamic of vibration platform were analyzed by using simulation, the natural frequency, model of vibration and frequency response were further analyzed. The stiffness of spring and flexible cable were optimized according to the analysis results, The post-optimality simulation results show that the stability and frequency response of vibration platform have improved.
Optimization of Sound Source Model for the Simulation of High Speed Train Interior Noise Using Finite Element Method
Authors: Wu Di , Ge Jian Min
Published: December 2014

When finite element method was adopted in acoustic analysis, area source was defaulted to be of the same amplitude and phase in its whole region. While in practical, there are differences in amplitude and phase between different parts of the area. In this paper, the area source was divided into several sub-area sources so that the source can be modeled with higher accuracy. The optimized area sources were used in simulation of interior sound field of high-speed train. Calculations prove that the simulated result has very good agreement with the measured one.
Dynamic Responses Analysis of Permeable Breakwater Subjected to Random Waves
Authors: Ping Hu
Published: December 2014

In this paper, based on the finite element method and ANSYS software, the dynamic responses of permeable breakwater under wave load response is analyzed and studied. Taking the method of combining modal analysis and power spectrum analysis research on dynamic response of breakwater in the frequency domain and the principal stress and displacement distribution of the structure in the exceedance probability of 0.7%. The results prove that the finite element method of power spectral density analysis can provide effective guidance for the actual engineering.
2-DOF Synchronous Control of 6PUS-UPU Parallel Manipulator
Authors: Zheng Kui Jing , Wang Chao , Zhou Hong
Published: December 2014

To meet the increasing demands on the control performance of parallel manipulator, servo control strategy for parallel manipulator was researched systematically. Combined 2-DOF control with Internal Model Control, the servo controller for parallel manipulator was optimized as smoothly and efficiently as possible. On the basis of the original current loop and speed loop, the position loop was redesigned to have both good position tracking characteristics and anti-disturbance capacity. The synchronous control strategy combined position signal and force signal was proposed. The actual experiments show that 2-DOF synchronous control has better stability and position tracking performance compared with the traditional PID control. The control performance of parallel manipulator is improved effectively.
Expert System Based on Fuzzy Rules for Monitoring and Diagnosis of Operation Conditions in Rotating Machines
Authors: Marçal Rui Francisco Martins , Hatakeyama Kazuo , Czelusniak Dani Juliano
Published: December 2014

This work provides a detection method for failure in rotating machines based on a change of vibration pattern and offers the diagnosis about the operation conditions using Fuzzy Logic. A mechanic structure (as an experimental prototype where faults can be inserted) called Rotating System has been used. The vibration standard of the Rotating System, called "The Spectral Signature", has been obtained. The changes in the vibration standard have been analyzed and used as parameters for detecting incipient failures, as well as their condition evolution, allowing predictive monitoring and planning of maintenance. The faults analyzed in this work are caused due to insertion of asymmetric masses for unbalancing in the axle wheel. The system for diagnosing Fuzzy System was calibrated to detect and diagnose the conditions: normal, incipient failure, maintenance, and danger, using linguistic variables. The frequency of rotation and the amplitudes of vibration of the axle wheel are considered in each situation as parameters for analysis, diagnostic, for the decision by the Expert System based on Fuzzy rules. The results confirm that the proposed method is useful for detecting incipient failures, monitoring the evolution of severity and offering grants for planning and decision making about maintenance or prevention of rotating machines.
Application of Biological Materials on Countermeasures and Development in Exercise-Induced Meniscus Injury
Authors: Xu Guo Xi
Published: December 2014

The development of biological materials provides a new method for the treatment of meniscus injury of the knee joint, and has broad application prospects. Meniscus of knee joint peripheral region blood supply, with self-repair function, non blood supply area is not self-repair function, when the damage appears select biomaterial implanted prosthetic treatment, according to the source is divided into natural scaffolds and artificial synthetic polymer scaffold materials, application compatibility, elastic, according to the toughness, strength and other properties of biological materials and human body, select the appropriate biological materials to replace therapy.
Research of Coupling Mechanism between Dynamic Damage of Fault Rock-Pillar and Gas Outburst in Front of Roadway
Authors: Wang Zhi Rong , Li Ya Kun , Han Zhong Yang
Published: December 2014

For the particularity of rock and gas outburst in layered composite rock mass, taking the large outburst accident of the 21st down slope at +0 horizon in Zhengzhou Daping coal mine for example, we study the dynamic response characteristics of layered system and the whole process of rock and gas outburst under explosion load based on secondary development of ABAQUS user subroutine, and then innovatively put forward the new pattern “structural surface damage reinforcement” and “ribbon outburst of rock and gas”. The results are well consistent with 10.20 accident, which indicate the coupling relationship between rock damage and gas outburst under complicated geological conditions: (1) The weak structural surface damages dramatically and easy to form high pressure and high gradient of gas enrichment zone near the tunnel face under conditions of gas damaging erosion and blasting vibration; (2) The gas will break through the rock impedance and flow rapidly which result in rock burst once high pressure gas along structural face breakdown the safe rock pillar between fault and tunnel face.
The Study on Temporal and Spatial Distribution of Seabed Pipeline Spilt Oil’s Floating Based on Energy Conservation
Authors: Li Yun Bin , Wei Lei , Luo Xiao Xia
Published: December 2014

In this paper, through the analysis of the Bohai seabed pipeline’s leaking characteristics in delivering, temporal and spatial distribution model of seabed pipeline spilt oil’s floating is built. The model is combined with the Bohai Sea’s hydrodynamic characteristics and the water’s condition, and assumes that spilt oil is a unit of particle. With this model, spilt oil’s floating trajectory and its characteristics can be simulated after a seabed pipeline oil spill. The time spilt oil floats to the surface and the trajectory distribution can also be calculated.
Application of PP Model in Water Quality Evaluation of Dehuixin River
Authors: Wang Yue Min , Li Sen Yan , Han Chun , Li Peng Cheng , Wang Jia Rong
Published: December 2014

This paper introduces the method of Projection Pursuit the idea, principle, modeling steps and application of the model in water quality evaluation of Dehuixin river. Use the Real-code Accelerating Genetic Algorithm to optimize the problem and then comparing the result with other results of Pollution Index Method and Fuzzy Evaluation Method. It shows that the method of Projection Pursuit can better evaluate the water quality, its result has higher objectivity and authenticity through the calculation, analysis and comparation.
Dynamic Analysis on Explosion Resistance Performance of Reinforced Concrete Wall
Authors: Li Wen Sheng , Yang Hui , Zhang Bo
Published: December 2014

Based on the finite element software ABAQUS, this paper deals with numerical simulation to dynamic response of reinforced concrete wall under blast loading. Study shows that the explosion resistance performance of the wall with four edges fixed or with two opposite edges fixed are better than that of the wall one edge fixed and another opposite edge simply supported. The greater the explosion impulse, the bigger the maximum displacement of the wall. When reinforcement ratio of the wall increases, the explosion resistance performance of the wall will be improved. At the same time, reasonable reinforcement and external conditions should be made sure. Keywords: Blast Loading, Numerical Simulation, Shear Wall, Dynamic Response
Research on Rib Stiffener Distribution and Ultimate Strength of Steel Tubular Tower’s K-Joint
Authors: Hu Xiao Guang , Yang Jing Bo , Li Mao Hua
Published: December 2014

The method of calculating K-joint’s ultimate strength given by “Code for design of steel structures” GB 50017-2003 requires that, the angle θ between K-joint’s chord and brace is no less than 30°. While, due to the request of electric gap or transmission line corridor, the angle of steel tubular tower’ K-joint in power transmission line have to be designed less than 30° sometimes. In order to solve the engineer problem, rib stiffener were usually added to K-joint structure. 3 kinds of new rib stiffener to directly-welded K-joint of steel tubular tower were designed, and numerical simulation was made to study the structures’ performance under load and ultimate bearing capacity. With new-designed rib stiffener, K-joint’s stress distribution in weld jointing area, where usually bear stress badly, is improved obviously. Stress concentration is eliminated, and maximum stress is lowered. It is suggested that, in the case of exceeding code’s suggest range, k-joint structure must be reinforced to increase intensity, and the 3 format of rib stiffeners can improve the structure’s stress distribution and ensure the security of the structure.
Increase Water Resistance Decorative Coatings on the Basis of Calcareous Dry Building Mixtures
Authors: Loganina Valentina Ivanovna , Makarova L.V. , Tarasov Roman V. , Sergeeva K.A.
Published: December 2014

Data about regularities of influence of filler, based on the calcium hydrosilicate, on properties of limy dry construction mixes and coverings in their basis are given. Higher water resistance of limy coverings with application of containing silicate filler is established.The conducted researches established efficiency of application in a compounding of limy dry construction mixes (DCM) the nanostructuring additives based on aluminosilicates [1, 2]. For regulation of structure and properties of limy dry construction mixes (DCM), intended for restoration of historical building, and also finishing of again constructed facilities, we offered to enter into their compounding an additive based on the synthesized hydrosilicates (HSC) [3, 4].Hydrosilicates of calcium (HSC) are received by synthesis from liquid sodium glass in the presence of calcium chloride CaCl2 with the subsequent drying of sediment at a temperature 105-300°C and its crushing. Studying of material composition of the filler, made by methods of the X-ray phase analysis (RFA) and infrared (IK) spectroscopy, and also structure on the electronic scanning microscope of PhenomTM G2 pro showed the existence in synthesizable material the calcium silicates of various basicity.The conducted researches show that the filler based on HSC possesses hydraulic activity. The activity of filler, defined according to a technique [5], makes 195-250 mg/g depending on the synthesis mode.At developing of compounding of DCM the modifying additives: softeners, redispersion powders were applied. As the plasticizing additives the Kratasol, Hidetal P-4, S-3, SP-3, MelmentR F15G and MelfluxR 1641F were entered into a compounding. Additives of “Kratasol” series represent salts of naphthalenesulfoacids with the high maintenance of high-molecular fractions, an additive Hidetal of P-4 – hyper softener based on polikarboxylate.
Study on Optimizing the Queuing Theory Based on Car Diagnosis
Authors: Zhang Chuan Long , Mao Jian Lin , Fu Li Xia , Xiang Feng Hong
Published: December 2014

The queuing problem of car condition diagnosis is belonged to a kind of queue theory. For solving the unreasonable issue of service window configuration while the customer flow is changing with time goes on. Author proposes the dynamic service window configuration algorithm (DSWCA) based on the varying customer flow. Making full use of service windows based on the classification of customer and some reserved windows. The simulation result shows that this algorithm can increase service time and effective throughout, besides the system cost is decreased as well.
Research on the Steering Character for Kiloton all Terrain Crane
Authors: Liu Zhong Ying
Published: December 2014

Based on the two degree of freedom model of kiloton all-terrain crane, he effects of relationship of deflection angle on turning radius were investigated in multi-axle steering system. MATLAB/Simulink was used to analyze the relationship of every axle in multi-axle steering and optimize the minimum turning radius. The studies show that the kiloton all-terrain crane adapted all-wheel steering driving at 5speed , and the front wheel angle was 32.3°, as compared to the rolling radius before optimization, the turning radius in all wheel turnaround reduced by 33%, which improved the vehicle capacity through the complex curve and increased the vehicle steering flexibility.
Controllable Preparation of Zinc Phosphate Materials with Different Morphologies and Particle Size
Authors: Wang Jiang Jie , Yang Xiao Hong , Wang Jing , Tong Qin , Liu Jin Ku
Published: December 2014

Zinc phosphate materials which have different morphologies, particle size and good crystalline were prepared via an effective template method. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FT-IR). The control mechanism of the zinc phosphate was investigated. Some practical experimental conclusions could be obtained, which were expected to have potential values in synthesis of functional materials.
Applied Engine Electronic Control Technology in Situation and Analysis of Experimental Teaching System
Authors: Sun Jian Min , Yang Yun , Gao Ling Hua , Shao Shu Yu
Published: December 2014

This paper analyzes different levels of demand of the teaching equipment in engine electronic control technology experiment, and the current situation in China . And designed a comprehensive experimental teaching system of vehicle simulation engine electronic control technology. This system has the function of experimental feature, performance test and simulationexperimental with engine electronic control system principles. The experimental teaching system is a close combination between theory and practical teaching, which has a good practical value and extensive use in market. It will be the development direction of domestic engine teachingequipment.
Analysis of Plastic Zone at a Crack Tip for I, II and III Mode Fracture with MY Criterion
Authors: Guan Miao , Zhong Zhao Zhun
Published: December 2014

The plastic zones for I, II, III mode crack under small scale yielding are analyzed by MY criterion, and the analytical solutions of the sizes of the plastic zones for plain stress and plain strain states are first obtained. The solutions for I and II mode crack show that the two solutions are functions of the yield stress, stress strength factor and polar angle, while the solution for III mode crack just depends on the yield stress and stress strength factor. Comparison of the plastic zone with those based on Tresca and Mises criteria shows that Tresca criterion predicts the maximum, the result by MY yield criterion lies between them, and is very close to that by Mises criterion. Besides, the relationship of plastic zone between plain stress and plain strain are also discussed.
Preference Selection Index Method for Machine Selection in a Flexible Manufacturing Cell
Authors: Jian Shao Yong , Tao Si Jun , Huang Xin Ren
Published: December 2014

The selection of a desirable machine is an important concern for the manufacturing firm. The selection process contains some critical selection attributes and the task of this process is to choose the desirable machine from a number of candidate machines. Then the machine selection problem is actually a multi-attribute decision making problem. This paper will develop a preference selection index method to solve the problem of machine selection in a flexible manufacturing cell. A case study is used to demonstrate that the proposed method is effective and feasible.
Segmentation and Localization of Microscopic Cell Image
Authors: Zhong Zhao Zhun , Qi Peng Jie , Guan Miao , Song Bin Na
Published: December 2014

The segmentation and localization of the microscopic cell image is studied based on digital image processing. Firstly, the microscopic cell image is preprocessed by means of Median filter to eliminate the noises. Then, according to the comparison experiments, Prewitt operator is selected for the segmentation of the microscopic cell. Finally, localization of the microscopic cell after segmentation is accomplished by the projection method and experiment results verify the effectiveness of the proposed methods.
Network Security Separated Card Based on Physical Isolation Technology Optimization
Authors: Zhao Dong Ming , Zhu Kai Feng
Published: December 2014

With the rapid development of network technology, computer networks and the Internet have become an important force in promoting social development, many enterprises and government agencies have been or are preparing to build its own internal network as the center of the entire information system, through a variety of methods accessed internal network to the Internet, thereby greatly enhanced their information acquisition and processing capabilities. Isolated net gap is an enterprise-level physical isolation technology; its generation is to solve the problems that exist in network security.
Predictive Runtime Verification of Java Programs
Authors: Yu Kang , Chen Zhen Bang , Dong Wei
Published: December 2014

For some key fields like energy, traffic, etc., the system software has high reliability demands, so that monitors not only need to pay attention on the current action of the system, but also the prediction of future software behavior to avoid disaster. However once been deployed, the only determinate characteristic can be used to predict is just the static software information. In this paper, we construct the method for getting the monitor which can predict the future event at runtime, and experiment to study the effect on the origin program. The results demonstrate that the predictive monitor is generally helpful.
The Design and Application of Wireless Network Based on Digital Campus
Authors: Hu Shi Yang , Zhang Sheng Cheng , Qin De Ze
Published: December 2014

With the rapid development of society, universities also develop its digital, intelligent business, which gradually increases the network data transmission needs. Wireless networks are an important part of the campus network, it is very important to build the campus wireless network as a supplement to a campus network. This design introduces a wireless network technology, and uses He Zhou College West Campus as a platform to design the campus wireless LAN-building program. The wired network and wireless network combine to provide better conditions for the campus information technology.
Study on the Hydrolysis of PET Catalyzed by Carbonates under Microwave Irradiation
Authors: Liu Zhi De , Zhang Xin , Wang Mi Mi , Zhang Dong
Published: December 2014

A study for optimizing the experimental conditions for the hydrolysis of polyethylene terephthalate (PET) catalyzed by carbonates was performed. The main influence factors of PET microwave hydrolytic reaction, such as the reaction temperature, time and catalyst dosage, were confirmed and these effects on the catalysis of PET microwave hydrolysis were studied in detail. The results showed that the sequence of influence factors was reaction temperature>reaction time> catalyst dosage. The optimal experimental conditions under the catalyst of basic zinc carbonate were that the catalyst dosage, 0.75%; the reaction time, 210 min; the reaction temperature, 200°C.
Network Technology Based Intercollegiate Cooperation for Effective Learning
Authors: Ma Wen Hui
Published: December 2014

This paper discusses the way to realize the intercollegiate cooperation under the network environment. The ultimate aim is to promote students' effective learning ability. Analysis of the characteristics of effective learning under the network environment puts forward the experience, from the value of the income oriented learning early design participatory learning activities, into the earning guidance for effective learning strategies. And finally verify the effectiveness of these strategies can improve the learning under Internet environment, and promoting teachers' educational technology ability promotion.
Design and Development of Intelligent Logistics System Based on Data Mining and Association Rules Technology
Authors: Wang Guang Jiang , Jin Shi Guo
Published: December 2014

Intelligent logistics is the use of integrated intelligent technology, which makes the logistics system to mimic human intelligence with the thought, perception, learning, inference and solve some problems of logistics in their ability. Association rule mining is usually more applicable and recorded in the index of discrete values. This paper analyzes theory and algorithm research of association rules data mining and presents design and development of intelligent logistics system based on data mining and association rules technology.
The Facile Preparation and the Performance of Killing Oncomelania Snails of Zinc Oxide Nanoparticles
Authors: Ge Jun Yan , Yang Xiao Hong , Yang Ye , Feng Hao Hao , Hu Xing Yu , Wang Xu Yuan
Published: December 2014

The controlled synthesis of the pill shape ZnO nanoparticles with average particle size of about 75nm, which using cetyltrimethylammo-nium bromide (CTAB) as the morphology control agent and under facile conditions. The morphologies, structures and optical property of the product were characterized by SEM, XRD and FT-IR, etc. The ZnO nanoparticles were explored to kill snails the first time so that the prevention and cure of schistosomiasis from the source. The experiments demonstrated that the ZnO nanoparticles had an effective performance to kill oncomelania snails. The decreased glycogen content of snails was speculated on the main reason of their death. When the concentration of ZnO nanoparticles aqueous solution was 80 mg/L, the mortality rate could reach 96%.