bluuebunny/crossref_metadata_2025 huggingface dataset:
First-Principle Study on the Hexagonal Phase Properties for ZnO under High-Pressure
Authors: Yang Cheng
Published: January 2015

The evolution regularity of the optical properties and electronic structure for ZnO hexagonal phase is studied under high-pressure, by using first-principles plane wave pseudo-potential method. The method is based on density functional theory (DFT) within the generalized gradient approximation (GGA) approaches. The calculation reveals that the valence band and the conduction band move to the direction of low energy and the direction of high energy by an increase of pressure, respectively, and thus the band gap is enlarged. The results of calculate also show that the energy band structure of ZnO hexagonal phase changes and the band gap is broadened with the increasing of pressure, which results in the move of the optical absorption margin and the optical absorption peak towards the aspect of the high energy.
Split Tire Tread Rubber Processing Machinery and Fixture Design Exploration
Authors: Gao Ying Jie
Published: January 2015

Tread rubber is formed with two purposes. A separate wire beneath the tread rubber powder processing to reduce tool wear Dayton speed , and the other is to reduce tire division cutting the number of large particles of plastic blocks to shorten the grinding process . Tread rubber processing is in the tread ring body segmentation . Ring with the tread surface of the body as clamping plane. Clamping the tread ring body is an elastic expansion of the clamping piece . Processing machinery designed modular form while completing the tread rubber strip on the mouth of cutting and peeling colloids . In front of the tool cutting point increase in the formation pressure roller is smooth plastic surface processing point . Limiting processing to control the separation of the tread rubber tread rubber particles.
Rational Research of Deep Concave Open-Pit Slope Angle of Lower Part
Authors: Ma Xiao Long , Zhang Guang , Ren Qing Guo , Jiang Xiu Ling
Published: January 2015

With the rapid advance of industrialization,the consumption of mineral resources is increasing.For open pit mine,many of them went into deep mining.The current,widespread adoption of open pit slope angle makes deep concave mining has a huge stripping ratio.So many mines in trouble,on the premise of guarantee the deep sunken open pit slope stability increase slope toe can bring huge economic benefits,and a lot of research work has been done.This paper describes the factors affecting the stability of open-pit mine slope,the slope rock mass stress analysis,to calculate the lower steep slope economic benefits,puts forward reasonable suggestions the future research direction of the slope stability of open-pit mine.
Calculating Stability Factor Using Linear Sliding Method is Not Suitable for all Sandy Soil Slopes
Authors: Zhu Wei Wei
Published: January 2015

To analyze the reasonable cohesion range of slope stability factor calculated using linear sliding method, different internal friction angles (20°,30°,40°) and cohesion (≤10kPa) of 36 slopes were calculated using linear sliding method, simplified Bishop method and strength reduction finite element method. The results show that, simplified Bishop method and the strength reduction finite element method are close to the stability factors; linear sliding method when cohesion is not considered is conservative, linear sliding method when cohesion is considered is partial to risk; calculating stability factor using linear sliding method is not suitable for all sandy soil slopes, only when the cohesion values not more than 1.5 kPa, the calculation results of linear sliding method are in accordance with engineering practice.
Application on Green Building Energy Design Evaluation Based on Support Vector Machine Model
Authors: Wang Yao , Yu Xiao Na , Zhang Li Feng
Published: January 2015

In this paper, combining with the characteristics of green building energy saving, constructs the evaluation index system of green building energy conservation and green building energy efficiency design based on support vector machine, to lay the theoretical foundation for the construction of green energy-saving design evaluation.
Ferulic Acid and its Oxide Enhance Performance of Soy Protein-Isolate/Chitosan Composite Films
Authors: Zhang Chao , Guo Xiao Fei , Ma Yue , Zhao Xiao Yan
Published: January 2015

The effect of FA and OFA on performances of the soybean protein-isolate/chitosan composite films was evaluated. The FA and OFA enhanced the tensile strength and thermal stability of the composite films significantly, while they reduced the water vapor permeability to 60.3 % and 72.8 % of the control respectively. Moreover, the OFA was more effective to enhance the tensile strength of the composite films than the FA.
The Implementation of a Green Roof Self-Management System
Authors: Luo Heng , Wang Ning , Ye Xiao Yan , Gao Lu , Li Jun Chen , Jing Tong
Published: January 2015

Roof greening is a promising solution for improving urban thermal environment and water quality. This paper studies the performance of a green roof with and without a self-management system, including the irrigation and shadowing subsystems, during a 3-month period via extensive experiments. Sedum plants are planted using two growing media. The first media consists of perlite and peat soil and the second media consists of average soil. Plant growth indices include vertical and horizontal growth rate as well as survival rate. Results show that a 100% survival rate can be achieved via intensive irrigation and shadowing. Meanwhile, an 8°C temperature decrease was observed during the hot season. The most suitable substrate depth is 9cm in terms of thermal effect and survival rate.
Study on Cement Concrete Pavement Treatment Methods of Common Damage Diseases
Authors: Liu Zhong Gen , Xu Fu Ming , Cao Guo Bin
Published: January 2015

This paper analyzed for common diseases treatment methods for cement pavement in Jilin province seasonal freeze-thaw area, based on the analyses, disease prevention and repair methods have been put forward for water deposit, fracture, dislocation, potholes, arch, plate corner crack and uneven settlement, the research results have certain reference meanings for cement pavement maintenance.
Preparation and Luminescent Properties of the La3+ Doped Tb3+-Hydroxyapatite
Authors: Liu Wen Bin , Adu  , Lv Yu Guang , Yu Li Li , Du Yong Xiang , Wang Wei E , Wang Chao Xing , Zheng Ji Hui , Gao Hong Bing , Zhang Li , Song Di
Published: January 2015

In this paper, a rare earth metal terbium ion as the central metal ion, a nanohydroxyapatite powder of the lanthanum doped terbium was synthesis by precipitation with hydroxyapatite as ligand. The sample was characterized by infrared spectrum, fluorescence spectrum and X ray diffraction instrument, and the thermal properties and fluorescence properties, structure of powderes were discussed. A nanohydroxyapatite powder of the lanthanum doped terbium achieves the maximum luminous intensity, when the La3+ doping concentration of Tb3+ was HAP 5% (La3+ and Tb3+ mole fraction ratio) devices. Rare earth powder of the lanthanum doped terbium hydroxyapatite has the stability chemical properties, the luminescence properties and good biological activity, the rare earth powder has good luminescent properties can be used in preparation of a good light emitting device. At the same time a nanohydroxyapatite powder of the lanthanum doped terbium has good antibacterial property, can be used as antibacterial materials.
Research on the Post-Evaluation Method for Common Highway Bridge Strengthening
Authors: Liao Jun , Wu Hao Yu , Yang Fei , Wang Chen Jie
Published: January 2015

For the common highway bridge strengthening works, this article divides the evaluation of bridge strengthening works into three categories layers - durability, safety and suitability, to evaluate the bridge strengthening from a technical level. Then analyzed separately for each category layer, select the parameter indices which have an important influence on each category layer to be the evaluation indicators. When evaluating the safety and suitability, the durability has been taken into consideration to amend their evaluation scores. On the basis of the obtained scores of the category layers, by using the Analytic Hierarchy Process method and the weighted average method, we can get the evaluate score of the members, components, parts entirety and the entirety of bridge successively. Proposed a kind of post-evaluation method applies to the common highway bridge reinforcement. This post-evaluation method provides theoretical references for the effect post-evaluation bridge reinforcement.
Research on Number of High-Pressure Grouting of Hierarchical Multiple for Slope Based on Reliability Analysis
Authors: Xie Zhen Hua , Yang Dong , Liang Sha Sha , Jia Zhi Yun
Published: January 2015

The technology of hierarchical multiple high-pressure grouting is an effective approach to manage high and steep slope of broken rock mass. The number of grouting is one of the key parameters of this technology. By the analysis of mechanics and grouting theory, the anchoring effect mainly is affected by anchor slurry vein and the contact area with rock mass. Based on the system analysis of slurry vein development for first time and many times high-pressure grouting, the process flow for hierarchical multiple high-pressure grouting is put forward. Serve the rock permeability changes before and after grouting as an indicator measuring slurry and rock surface area, the method of determining grouting number based on the reliable probability is got. Combined with the engineering example of Shouyun Iron Mine, this paper puts forward the reliability criteria of working state of hierarchical multiple high-pressure grouting. Through the probability calculation, the best number of grouting is 4 times. The tests of permeability of rock mass and drawing force verify the accuracy of this determination method.
Application of High Strength Additives in SMA Asphalt Mixture
Authors: Pan Wei , Wu Jing
Published: January 2015

At present, SMA mixture generally to the use of SBS modified asphalt, especially in the area of expressway construction in our country, but in recent years, the use of SBS modified asphalt has some problems, for example: SBS of storage stability of modified asphalt is a difficult problem, because SBS and asphalt compatibility between components of the difference, the modified agent and asphalt separation, reduces the performance of SBS modified asphalt; SBS modified asphalt in the stored procedure, the performance will decay, even if not stop stirring, decay cannot avoid, also influence the effect of the use of SBS modified asphalt.
Simulation on the Energy-Saving Design Model in Construction for Considering the Multi-Level Features
Authors: Xiang Xiao
Published: January 2015

For the drawbacks of construction design and regulation used in our country for long time, like construction rules are far behind, and the energy consumption of the construction process is higher, the energy-saving construction design model based on multi-level features is proposed. Through calculating the energy consumption with hours as units, and quantitative judgment is made, the appropriate formulas are utilized reasonably depending on the circumstances to compute energy consumption of construction, so as to obtain the energy-saving design under the corresponding conditions. This model can be adopted to calculate rational energy consumption, and circumvent, so that ultimately achieving energy saving. At the same time, the initial conditions of construction and matters requiring attention during the construction phase are integrated and discussed, as well as issues such as the weights of design value, as a whole to consider, to minimize the error between the design and construction.
Fabrication of Fe3O4 Nanoparticles Decorated Multi-Walled Carbon Nanotubes Magnetic Nanocomposite
Authors: Chen Ling Ling
Published: January 2015

In this paper, Fe3O4magnetite nanoparticles decorated multi-walled carbon nanotubes (MWCNTs-Fe3O4) nanocomposite was successfully prepared. Firstly, carboxyl-functionalized MWCNTs were obtained after acid oxidization. Then, Fe3O4 nanoparticles were attached onto the surface of MWCNTs through chemical reaction between hydroxyl groups on the surface of Fe3O4 nanoparticles and carboxyl groups on the surface of MWCNTs.
Feasibility Analysis of Radiant Floor Cooling and Heating System Applications
Authors: Du Yan
Published: January 2015

Radiant floor cooling and heating system is the new system which can shares the same tube to cooling in summer and heating in winter. It meet the requirements for human comfort , save energy, and reduce cost, so it is popular the field of building energy efficiency in recent years. This paper briefly describes the radiant floor cooling and heating field research at home and abroad and its advantages, and briefly analyses the factors of heat exchange efficiency in radiant floor cooling and heating system.
Exploration into Architectural Design under the Concept of Sustainable Development
Authors: Ding Shi Yang , Yu Hong Xia , Qing Ning
Published: January 2015

In the present situation of global warming and shortage of ecological resources, the human living environment is further deteriorating. In order to cope with the ecological changes on the planet, the idea of sustainable development has been promoted. The building industry, a major consumer of resources, must achieve sustainable development. The paper expounds on the sustainable development ideas in architectural design, and presents a preliminary discussion on the situation of sustainable technology development in the current architectural design from 3 aspects, namely natural lighting, passive envelop enclosure, and solar energy technology, combined with analysis of relevant cases.
The Optimization Research of Concrete Mixing Station Location
Authors: Lu Mei , Li Mao Feng , Li Xue
Published: January 2015

Concrete mixing station location occupies a very important position in the supply chain of the commercial concrete, location not only affects the cost, but the level of quality of concrete delivery service. In view of the traditonal location model only pursuing the cost minimization and neglecting serive level, the reliability is introduced into location model as a standard of concrete delivery service, to establish a multi-objective model which uses the cost minimization and reliability maximization as the objective function. Finally, the effectiveness of the model was confirmed by a numerical example.
Modification of PLA with Chain Extender
Authors: Elhassan Ahmed S.M. , Saeed Haroon A.M. , Eltahir Yassir A. , Xia Yu Min , Wang Yan Ping
Published: January 2015

In this study, oligomer JoncrylTM ADR was used to extend the chains and improve the mechanical properties. The chain extender multifunction epoxide was used with concentrations of 0.5 and 0.9 wt %. Pure and modified PLAs were characterized using DSC, MFI and FT-IR. The DSC results showed that Tg shifted to the high temperature and Tm increased slightly after chain extending. The MFI of the blends decreased with increasing the content of the CE which means the increase of molecular weight. The coupling between epoxy groups of CE and end groups of PLA was confirmed by FTIR tests. This coupling led to significant improvement in tensile strength and modulus.
Research on Alignment Control of Cable-Stayed Bridge during Construction
Authors: Liang Jin Jun , Zhai Ke Wei , Fan Jun , Shi Chun Le
Published: January 2015

Measured values of alignment deviate significantly from the predicted ones partially of a cable-stayed bridge before closure. The root-cause was analyzed and a correction program was proposed in this paper. Unreliable anchoring and instable deformation of hanging basket resulted from the difference between hanging basket structure and construction requirements are the main cause. It is difficult to adjust cable force under cantilever state and it is feasible to adjust cable force and height after the bridge is setup.
Application Approach and Prospects of the Foundry Waste Sand and Slag in Engineering
Authors: Zhang Tie Zhi , Wang Cheng Yong , Wu Jin
Published: January 2015

In the foundry industry, the main solid waste is the foundry waste sand, casting cupola dust and slag, which causes environmental pollution and becomes a bottleneck restricting the development of the foundry industry. The main components of the foundry waste sand and slag generated by casting are siliceous and calcareous granular materials, which meet the needs of engineering construction materials, they have a broad application prospect. In this paper, the investigation and analysis of the foundry waste sand and slag have been carried on about the research and application in the engineering construction, which provide reference and basis for the application of foundry waste sand and slag in the engineering.
Design and Implementation of Information System of 3D City of Geotechnical Engineering
Authors: Luo Qiong
Published: January 2015

To meet the demand for the geotechnical information system management, this paper has put forward a plan to develop the management information system by using GIS and commercial database management technology. It has also described and analyzed the development of the function modules of the system and designed its module structure architecture for further development of the system. The GIS and database technology may be applied in managing, analyzing and evaluating the sea-volume geotechnical information data and help realize information sharing and provide policy-making support for the city planning, construction and management.
Research on the Application of Digital Technology in the Landscape Design
Authors: Yao Cheng Li
Published: January 2015

In this paper, we describe the content and features of digital technology and give a brief introduction about the function, role and prospects of digital technology in the field of landscape architecture from data collection, data sharing, exchange of information, spatial analysis and extraction, expression landscape, landscape evaluation, plant selection, dynamic monitoring and management, remote design, and other aspects of the virtual landscape technology. In addition, we give a brief talk from the point of the function and role of application of digital technology in the field of landscape architecture. Finally, we proposed the key question of the application of digital technology in current days.
Design Light Environment Dining Space
Authors: Xing Yan Chun , Zong Yan
Published: January 2015

Light dining space environment on the quality of environmental design plays an important role in the decision, the paper mainly from three aspects of light environment design a study. Through research and analysis, combining the characteristics of dining space, the lights in the dining space to explore the role of trying to find the lights applied to the basic law of the space environment.
Structure Design and Finite Element Analysis of Liujiaba Inverted Siphon
Authors: Ji Dong Yu
Published: January 2015

This paper adopts general finite element software to carry out structure design and force analysis for Liujiaba inverted siphon engineering, researching variation law of the inverted siphon’s stress and displacement under various cases in construction process and operating process. Research results provides reliable reference for construction and operating of inverted siphon structure.
Strength and Movement of Flexible Plate Oriented Horizontal Shock Testing Platform
Authors: Yan Ming , Wen Zhao Dong , Du Jian Ye
Published: January 2015

Horizontal shock testing table can be used to evaluate shock resistance ability of warship equipments. Based on this theory, the level of flexible plate oriented shock testing platform is raised. Using the finite element method, the output waveform of the testing platform and the stress distribution of the flexible plate are analyzed in this paper. It can be concluded that flexible plate can be used to store elastic potential energy during the impact and have a certain impact on test waveforms. Theoretical maximum displacement of the platform body is 94mm, the calculated value is 89.5mm, decrease by 4. 8%; theoretical maximum speed of the platform body is 4m/s, the calculated value is 3.93m/s, reducing to1.75%; theoretical, the value of positive wave peak acceleration of platform body is 571m/s2, the calculated value is 532 m/s2, decrease by 6.8%; theoretical platform body negative wave peak acceleration values is 175m/s2, the calculated value of 183 m/s2, an increase of 4.6%. The research shows that flexible plate as a guide device can meet the impact test table for error waveform requirements..
Analysis and Improvement of Vacuum Dampening Machine
Authors: Li Zhe Kun , Yu Min , Zou Yu Sheng , Luo Yong , Liu Ge Yi
Published: January 2015

Vacuum dampening is a crucial step in the tobacco production. It needs to vacuumize the tank to a specified value, and then injects water mist to dampen the tobacco packages. This paper analyzes the control principle and technical indexes of a Vacuum Dampening Machine, and the influence dampening effects of the two systems (vacuum system and dampening system). It found that the vacuum system of Level 3 Section 4 and bottom dampening are predominant.
Application of Improved Bingham Model in Braking Large-Mass Unidirectional Impact Loading Problem
Authors: Tang Zhi Yin , Wu Gang , Lu Jun Yong , Li Yan Fei , Ma Rui Feng
Published: January 2015

Aimed at braking large-mass unidirectional impact loading problem, the impact loading characteristics has been analyzed and a mechanical model has been established. A new improved Bingham model has been proposed to solve the problem of big error in traditional Bingham model in low-velocity region. Unlike the traditional Bingham model, there are two different kinds of expression of damping force on both low-velocity and high-velocity region in the improved Bingham model. Thus, the accuracy of the model has some improvement, and it has been verified with simulation.
Yellowish-White Emission from Sol-Gel Mediated Lithium and Aluminium Co-Doped Zinc Oxide Thin Films
Authors: Tan Xiao Ling , Zhang Wei Hua , Wang Ju Wei
Published: January 2015

Li and Al codoped ZnO (LAZO) thin films have been prepared by sol-gel method. There are two emission bands were observed in the spectra of pure ZnO thin films. One band possessed a sharp peak at round 380 nm locating in the UV range; the other band consists of green luminescence. Yellowish-white emission were observed from the LAZO films, which can be fitted into three bands: a strong yellow emission, a moderate green emission and a weak violet emission centered at 598, 538, and 430 nm, respectively. The luminescence color was seen to be yellowish white due to the recombination for the dominant green and yellow emission.
A Study of Silt Erosion on Inner Buckets of Pelton Turbines
Authors: Wei Su , Song Wen Wu , Jie Fu , Yong Cao
Published: January 2015

A 3-D model of pelton turbine bucket was built to investigate the motion characteristics of sediment particles in pelton turbines and the erosion caused by the movement. With the assistance of fluid analysis software FLUENT, A continuous phase turbulence model was estimated by the Euler equation which achieved convergence and the selected coupled calculation for solid-liquid two-phase flow with DPM model was built. It can be draw from the numerical analysis that, with the same size and sediment concentration, the inner bucket wall would suffer from the greater erosion by the relatively greater flow velocity; under the same condition of flow velocity and sediment concentration, the more serious erosion was caused by the bigger sized sediments; and the greater sediment concentration led to greater erosion, given the same flow velocity and sediment size. Based on the study, it showed that the erosion of inner wall of buckets was mainly affected by sediment size and concentration, as well as flow velocity.
Design and Research of Concrete Spraying Machine
Authors: Song Hui , Chen Hui Wei , Liu Na , Cao Chuan Jian
Published: January 2015

According to the characteristics of the general tunnel structure, one type of the concrete spraying machine is designed and researched for convenient operation. Based on the work condition, the structure and dimensions of the mechanical are calculated, including the thickness and section size of each working arm. During the loading situation, the strength and stiffness of the key components are calculated by theoretical arithmetic. The concrete spraying machine structure is simulated for dynamic analysis comparison by Pro/E and Matlab software. The design method of the concrete spraying machine has certain directive significance for advanced product manufacturing.
Analysis on the Parametric Design and Static Performance of the Hyperbolic Paraboloid Shells with Rectangular Projection
Authors: Lu Xiao Yang , An Ran , Lu Shao Bo , Wang Lei , Xin Jing , Liu Feng Cheng
Published: January 2015

This paper first used parametric design language APDL to establish three kind of the single hyperbolic paraboloid shell model with rectangular projection. The parametric design of the reticulated shell structure could be realized after inputting the span (S),rise (F),the grid number of each side (Kn),the warping rate (K),which provided great convenience for optimizing the structure and force analysis.Then through contrasting three structure schemes and different warping rate,it studied how they influence the mechanical properties of structure.And at last it got some conclusions with engineering significance.
The Irradiation Crosslinking of Poly(vinylidene fluoride-​chlorotrifluoroethylene)
Authors: Chen Jian
Published: January 2015

Vinylidenefluoride (VDF) and chlorotrifluoroethylene (CTFE) copolymers were crosslinked by ultraviolet irradiation, chlorotrifluoroethylene content has a great influence on the crosslinked copolymers, high CTFE content support more joint pots, the properties of the copolymer shows higher storage modulus, the loss modulus gets smaller. The copolymer mechanical properties gets much higher.
Damping Performance of CB Filled NR/ENR, NR/BR and NR/IIR Compounds
Authors: Wang Yue Qiong , Peng Zheng , Zhong Jie Ping , Xu Kui , Yang Chang Jin , Luo Yong Yue , Li Pu Wang
Published: January 2015

Natural rubber (NR)/epoxidized natural rubber (ENR)/carbon black (CB), natural rubber/butadiene rubber (BR)/carbon black and natural rubber/isobutylene-isoprene rubber (IIR)/carbon black compounds were prepared by mechanical mixing method. The mechanical properties, dynamic mechanical properties for the compounds were investigated respectively. The temperature range of tanδ>0.3 of NR/ENR40/CB compound was wider and shifted to high temperature than NR/CB compound. Comprehensive analysis indicated that NR/BR/CB and NR/IIR/CB compounds had no better damping performance than NR/CB compounds, while NR/ENR/CB compound had better damping performance.
Numerical Simulation of Cold Swirl Field for Solid Fuel Ramjet with NACA Airfoil
Authors: Yu Jie , Chen Xiong , Li Hong Wen
Published: January 2015

In order to study the swirl flow characteristics in the solid fuel ramjet chamber, a new type of annular vane swirler with NACA airfoil is designed. The cold swirl flow field in the chamber is numerically simulated with different camber and t attack angle, while the swirl number , swirl flow field structure, total pressure recovery coefficient were studied. According to numerical simulation result, the main factors in swirl number are camber and angle of attack, the greater angle of attack, the greater the camber ,the stronger swirl will be. Results show that the total pressure loss is mainly concentrated in the inlet section, the total pressure loss cause by vane swirler is small. Radial velocity gradient exists in swirling flow, and increases with the swirl number. With the influence of centrifugal force and combustion chamber structure, the radial velocity gradient increases.
Design of the Globoidal Cam Mechanism Based on MATLAB and CATIA
Authors: Zhang Chao , Zhang Zhi Hong
Published: January 2015

Working profile of Globoidal indexing cam is a complex surface. 2D mechanical drawing is difficult to describe it clearly. With the development of computer technology, the 3D design software such as CATIA, Pro-E, Solidworks, UG/NX, the solid and surface function of them make productions more excellent. Globoidal indexing cam profile equations firstly was studied, the geometric size of the globoidal indexing cam mechanism was calculate, and then use MATLAB to calculate the globoidal indexing cam contour surface 3D coordinates of points, finally completed the three-dimensional modeling of globoidal indexing cam in CATIA.
Theoretical and Experimental Research on Matching of Cooling System Property of Househole Ice-Making Machine
Authors: Chen Hong Yan , Qu Jian , Cai Fu Yi , Wu You
Published: January 2015

View of the current ice-making machine for cooling system of the state of loosely designed in this paper under operating principle and structure and the cooling characteristics of a household ice-making machine,precise exposition of various refrigeration equipment`s design and calculation method, analysis of its selection ideas for the ice-making machine for cooling system designed to provide a important value of reference.
Determination of Competitive Adsorption Isotherm of the Etodolac Enantiomers Using Inverse Method
Authors: Qi Su , Hui Li , Yu Wei Fang
Published: January 2015

The competitive adsorption isotherm of etodolac enantiomers on a cellulose carbamates-based chiral stationary phase (Chiralcel OD) at 25°C was determined in this study by the inverse method (IM). An equilibrium dispersive (ED) model combined with bi-Langmuir adsorption model was used in predicting the elution profiles. The adsorption isotherm model with 5 parameters was determined by fitting the two overloaded band profiles. The non-dominated sorting genetic algorithm (NSGA-II) and Levenberg-Marquardt algorithm (LMA) were crucial tools and utilities in this process. Suitable model parameters have been obtained and the experimental results were in good agreement with the model predictions.
Research on Design and Construction Issues of Oxygen Pipeline in Chemical Plant
Authors: Yang Xiang Yang
Published: January 2015

When the high-pressure chemical oxygen delivery device, the slightest mistake, likely to cause explosion, so the design oxygen pipeline, it is usually as a special danger medium piping design. This paper explores the design of the petrochemical industry in oxygen pipes, installation and construction unit issues and process piping installation and construction issues, systematic analysis of the piping in the design and construction should pay attention to the problems and solutions to ensure each petrochemical industry aspects of safe operation. Standard requirements and corresponding measures in aspects of oxygen pipeline flow rate control, material selection, pipe and valve selection and pipeline construction, which should be followed to ensure the safety of oxygen pipeline, which are described in details, according to the national standard/safety technical regulation for oxygen and relative gases produced with cryogenic method. Finally, the experience of safe use of oxygen pipelines is presented.
Remote Rainfall Monitoring System Based on GPRS
Authors: Liu Wen Bo , Wang Tao , Liu Yong
Published: January 2015

Dynamically monitoring of rainfall information plays an important role in flood control. In order to change the backward state of past when forecasting rainfall only by the artificial, to improve the prediction accuracy, to measuring speed, and to expand the scope and measuring content forecast, after having got the depth understanding of technology development of the rainfall monitoring at home and abroad, a remote rainfall monitoring system which based on GPRS is designed. The system is mainly composed of three parts: rainfall data acquisition terminal, communication part and data processing platform. Through the field test, the system has the advantages of simple operation, stable and reliable work, fast and efficient, having broad application prospects.
Research on Mine Water Quality Monitoring System Based on SOPC
Authors: Wang Rui , Zhang Kai Yuan , Zhang Le
Published: January 2015

As for the severe situation of mine water hazard in our country, it is extremely urgent to find ways of preventing and managing mine water hazard. This paper proposes a design of system which adopts fluorescence detecting technology and uses SOPC as the core control module, it can quickly detect the changes of mine water hazard source.This system collects signal of fluorescence produced in laser irradiation of water, and turns it into electric signal which is later be collected by ADC and then sends the digital data into FPGA for storing and managing. SOPC is designed in QuartusIIsoftware, and program code is designed in NiosIIsoftware, which will finally be downloaded into FPGA. A test of data collecting, handling and storing is carried out in the lab to verify the feasibility of the system. The results show that the system can efficiently detect the changes of mine water hazard source.
The Design and Implementation of the Rice Lesion Identification System
Authors: Qiao Sai
Published: January 2015

This paper proposes a kind of design and implementation method for rice lesion identification system, which includes the hardware structure and lesion recognition application software. This system applies DSP as the core, image coding chip of TVP5147, external cameras, together with the application software to identify the rice lesion. The experiments illustrate the system has better performance.
Characterization Method of Radar for Air Surveillance Coverage
Authors: Wu Wen Quan , Tian Shu Sen , Liu Tao
Published: January 2015

Aiming at the radar vertical detection coverage limitation given by manufacturing factories, this paper put forwards a new characterization method of radar’s air surveillance coverage: it is the projection distance of furthest detection point for different RCS targets at different altitudes, which can directly show radar’s quick response to the attack action launched by fighter. Then this paper gives the calculating method of coverage characterization method, and calculates radar detection coverage of typical medium-low altitude search. The result shows that the detection ability to penetration fighter is weak for high altitude and below 300m altitude, especially for the high altitude penetration stealth fighter.
Aerocraft Real-Time Measured Data Processing Method Based on Combined Filtering
Authors: Li Yan , Liu Hua Jun , Bian Guang Lang , Liu Miao Hui
Published: January 2015

To solve the problems that resulted from using a certain filtering method alone to process the real-time data measured on aerocraft, a new method combined filter and Savitzky-Golay smoothing filter is proposed to process the real-time measuring data, which could classify and segment the measured data of aerocraft trajectory according to its priority and time domain. It could provide useful principle and control procedure of combined filters on different conditions to improve the filter efficiency, and the combined filtering results meet the needs of aerocraft real-time data processing accuracy in different measured sections.
Design and Optimization of the Sensor Gear Set in EPS
Authors: Ma J. , Wang J.
Published: January 2015

This paper aims at improving the design of torque sensor used in the EPS system. Such design not only integrates the torque and the corner signal, but also saves space. By using Matlab interior point method, the gear system parameters are optimized andthe weight and the size of the sensor are reduced. Bench test results demonstrate that the measurement accuracy of this self-designed sensor is able to meet the demands of EPS.
Calibration Error Analysis for Six-Axis Force Sensor Used in Docking System
Authors: Lin Sheng , Zhang Ling Xuan , Shao Ji Ming , Zhang Chong Feng
Published: January 2015

The calibration error of a calibration machine will affect the precision of the six-axis force sensor directly. Aiming at the calibration machine with three force sources, calibration errors of the six-axis force sensor for docking system are analyzed to improve measurement precision. The loading position error and angle error of loading axis are researched on alternatively. The error in the calibration direction and the additional error in other directions are studied on. Analysis results will provide important reference for calibration of the six-axis force sensor.
A Research of Uranium Ion Exchanging Tower Stress Calculation under Earthquake Based on ANSYS
Authors: Li Liang , Chen Guo Zhi , Cheng He Ming
Published: January 2015

Establish the finite element calculation (solid-liquid coupling) model of uranium ion exchanging tower with ANSYS. Time-procedure analyze the pillar of uranium ion exchanging tower with seismic waves. The wave form is EI Centro seismic with M=8.0, and the time interval is 0.02 seconds, lasts 30s.It is suitable for Class 1 site soil. Simulate the stress of two important welding position of uranium ion exchanging tower under the effect of the seismic wave. Compare the simulating results with the calculating results of Anti-seismic for Petrochemical Equipment to show that model simulating is similar to that of manual. Simulating analysis has proved that the maximum stress of two welding positions of the uranium ion exchanging tower is under the ultimate strength of tower welding, so the application of uranium ion exchanging tower in seismic zone meets the requirement of anti-seismic property. And this research provides the information of main risk positions for future entity analysis.
Research on the Mechanical Reliability of the Pneumatic Pushing Rod in the Citrus Roll Peeling Mechanism
Authors: Lin Wei Guo , Zong Wang Yuan , Li Bing , Zhou Chen
Published: January 2015

The development of Chinese citrus processing industry is imminent,as an essential part of the citrus processing equipment, the citrus peeling part has great value. In peeling mechanism, for pneumatic pushing rods would do reciprocating motion for a long time, thus of great significance for the reliability design.This article focuses on the reliability design in citrus peeling parts.
The Finite Element Analysis of Tension and Compression Condition of Diesel Engine Connecting Rod
Authors: Chen Gang , Wu Lei , Wu Long , Xie Pei Qing
Published: January 2015

In this paper, through the finite element analysis software ANSYS, analysis and research on the part drawing of the diesel engine connecting rod. Using pro/e modeling, introduce it into the finite element analysis software ANSYS for the finite element static analysis of the state of load on the connecting rod. Setting correct model, partitioning appropriate mesh, and setting a reasonable process solution, it can generate visual stress nephogram to facilitate access to important data and intuitive understanding. There is a certain reference value to guide the practical production and shorten the production cycle of the product.
A Fine-Grained Access Control Approach for Parts Resource Sharing
Authors: He Li , Sun Wen Lei
Published: January 2015

To meet users’ actual demands for fine-grained access control (FGAC) to data object in web-based parts resource sharing platform, a FGAC approach for parts resource sharing is proposed to enable both the providers and administrators to manage the permissions of parts resource jointly. In this approach, all levels of detail (LODs) are introduced in the part resource information firstly. Then, a role-based access control model for parts resource sharing, called RBAC_PRS, is provided on the basic of RBAC (Role-Based Access Control) and O-RBAC (Owners-Based Access Control) models, and the permission administration policy is also formulated in condition of the separation between ownership and usufruct of parts resource. To provide the better authorization route, two middle layers: function sets and component sets, are added in permission-role assignment process, and each role’s assignment rules are explicitly specified in an XSLT style sheet. Furthermore, an XML-XSLT based approach is adopted to accomplish the diversity expression of user-accessible view based on FGAC. And it could ensure to practice the web-based knowledge sharing system safely.
Research on Green Design Overall Technology of Electromechanical Products
Authors: Lou Xi Yin
Published: January 2015

With the development of global industrial, electromechanical products enterprises create wealth for the mankind at the same time, but also consume a lot of resources, and cause serious environmental pollution. In the design stage, enterprises must consider to prevent environmental pollution, to save resources and energy. The whole life cycle of electromechanical product refers to design, manufacturing, transportation, sales, use, and recycling etc. Protection resources and environment is the whole life cycles core. Green design is from cradle to cradle. The technologies of green design are different from the traditional design which is only pay attention to function. It is not only to meet the needs of the people and solve the problem for the traditional starting point for the design, but also must to consider the use of natural resources, reduces types and quantities of pollutants, effective reuse, and reasonable cost of materials.
Development and Application of Electromagnetic Module in Multi-Fields Automatic Simulation Platform for Integrated Circuit Devices
Authors: Zhang Ruo Fan , Zhang Ke , Wang Ren Cheng , Cheng Jia , Lu Yi Jia
Published: January 2015

According to integrated circuit (IC) devices, this study proposed a integrated automatic design platform including geometric modeling, finite element simulation analysis, experimental design etc. The platform is a software system, the development of which is driven by product design of IC device chambers. As a module of the platform, the electromagnetic fields simulation part is based on secondary development of Ansys HFSS and the Python language to transfer data, build model and analyze automatically. The validity of the electromagnetic simulation module is verified by an example of PECVD SC300 chamber.
The Design of Ultrasonic Ranging System Based on Single Chip Microcontroller and VB
Authors: Zu Yi Kang , Xu Miao Jing
Published: January 2015

The single chip Microcontroller STC89C52RC was used as controller in the system, the HC-SR04 ultrasonic module was used to send and receive ultrasonic, and the single chip Microcontroller can calculate the distance of the measured object by the time difference of sending and receiving of ultrasonic. In order to improve the measurement precision, temperature compensation method was used, the temperature can be obtained by the digital temperature sensor DS18B20,the LCD1602 was used to real-time display the distance and ambient temperature, this two values were sent to PC by serial port, the Visual Basic 6.0 was used to program the monitor interface, convenient remote observation. The realization method of the system hardware and software were presented in this paper, the experimental results show that the system has the characteristics of simple structure, high measuring precision, good stability, easy operation and so on.
Intelligent Fire-Fighting Robot
Authors: Cheng He Ming , Yang Tian Cun , Li Liang
Published: January 2015

In this paper, intelligent fire-fighting robot as the research object, based on Mitsubishi FX2N series PLC, the establishment of intelligent fire-fighting robot control model and control system optimization, so that the fire-fighting robot among the various modules can be smooth and stable work together. Using L298 chip control two motors, the speed achieved by controlling the robot flexible steering, and using PLC produce different wave PWM stepless duty to ensure the smooth operation of the robot. Meanwhile, the detection of motor speed using encoder feedback to PLC will constitute a closed-loop control to achieve precise control and adjustment of robots routes. Intelligent fire-fighting robot each module to work together more quickly and safely find and reach the fire source and fight it.
Reliability Design of Control Circuit for Quartz Crystal Feeding System
Authors: Yan Tao , Jin Gui Qin , Wei Ze Ding
Published: January 2015

Quartz crystal laser marking is the last process of quartz crystal production, and quartz crystal automatic feeding system works in harsh environment, like high frequency, strong electromagnetic interference, static electricity and large power, and feeding system itself also contains many electromagnetic interference factors, To ensure the system working stably and reliably, in the design and manufacturing of control system, using high quality components, the reasonable wiring and grounding, in the aspect of electromagnetic compatibility, hardware and software anti-interference measures were taken. Through a lot of test working in the laboratory and field, and the design scheme was modified for many times, it finally makes that the feeding system is so stable in the workplace that it could meet the requirements of the customer, and it has a certain guiding significance for the design of other mechanical and electrical products production.
The Total Wave Force Sensor Design
Authors: Qiao Jun Peng , Liu Nan
Published: January 2015

This paper discusses a kind of total wave force sensor, which includes the wave total force sensor principle design,the total force sensor structure design, measuring circuit design. And analyzes the relation between strain and the structure parameters at the position of strain gauge, the coordination between measuring circuit and structure. A more reasonable wave total force sensor structure has been synthetically selected. Cooperated with reasonable strain measuring circuit, the total wave force sensor has been designed, which is used to measure 3-D wave force and has promoted the wave total force sensor innovation and development.
Study on the Causes and Prevention Measures of Shrinkage Defects of Heavy V-Belt Pulley in the Production
Authors: Jin Gui Qin , Yan Tao , Chen Cui Feng
Published: January 2015

Shrinkage cavity and shrinkage porosity, often occurring during the production of heavy v-belt pulley roughcast, may lead to the decrease of the pulley performance and further result in casting rejection. Therefore, it is necessary to study the causes and prevention measures of shrinkage defects of the casting. The material of V-belt pulley roughcast at issue is HT250 and it adopts resin sand casting process. With a large amount of practice in workshop and times of revision of the design of foundry technology, we have found that the shrinkage in the hot spot of heavy v-belt pulley roughcast can be reduced or even eliminated to fully meet the performance requirements with a moderate control of pouring temperature and speed, an optimized design of foundry technology, and a strict limitation of chemical composition. This finding will bring illumination to the production process of other heavy pulley roughcast.
Design and Implementation of Software for Quartz Crystal Feeding System
Authors: Yan Tao , Jin Gui Qin , Wei Ze Ding
Published: January 2015

The paper mainly introduced the working process of automatic feeding system for quartz crystal laser marking, elaborated the human-computer interaction and control software design and implementation. System used double CPU system to control the mechanical parts movement and to send the laser marking control signal, and to conduct the man-machine dialogue. At first, the system realized the main function such as structured programming, reasonable allocation of system resources, and the software anti-interference design. Eventually system realized the automatic feeding and laser marking of quartz crystal, and was favorable to the effective management of the equipment operation personnel, and to meet the requirements of the user.