bluuebunny/crossref_metadata_2025 huggingface dataset:
Multi-Response Surface Optimisation with Different Priorities for Ramp Process Parameter Design
Authors: Inkaew Rewadee , Luangpaiboon Pongchanun
Published: July 2012

This study proposes a multi-response surface optimisation with different priorities (MRSOP) problem for determining the proper choices of a process parameter design (PPD) decision problem in a noisy environment of a ramp process in plastic injection molding. The proposed model attempts to minimise process responses of the flow mark defect and mold deposit. Firstly, Taguchi design and analysis are applied to screen out controllable design parameters significantly affecting the quality performances and the regression is then used to determine the form of the relationship between the response and design parameters. A numerical example demonstrates the feasibility of applying the proposed model to the PPD problem via two iterative methods. Its advantages are also discussed. Numerical results demonstrate that the steepest descent method is superior to the use of the linear constrained response surface optimisation method. In this study, the flow mark defect reduces from 2.63 to 1.45% and mold deposit measured by the mold cleaning frequency decreases from every 2.57 to 1.86 hours on average. All experimental data presented in this research have been normalised to disguise actual performance measures as raw data are considered to be confidential.
Research on On-Line Surface Defect Detection for Steel Strip Based on Sparse Coding
Authors: Liu Zhao , Hu Jia , Hu Li , Zhang Xiao Long , Kong Jian Yi
Published: July 2012

In the field of metallurgy, surface defects detection for steel plate based on machine vision is a new key technology. In order to improve the accuracy and speed of machine vision in real-time surface defects detection, taking into account the neurons selectivity and sparseness to visual information, we present a flexible data selection mechanism in the layer of photoreceptors and a new sparse coding model for object feature representation and object recognition. Experiments show that the new method is more effective and more effective in the process of training and classification. The key finding of this study is that, the effective sparse coding mechanism not only could have occurred in the data input stage, but also could be in a new way.
A Study of Simulation Experiment of Car Steering Stability Based on ADAMS
Authors: Wang Qiang
Published: July 2012

Build a whole car model with ADAMS/Car, a simulation analysis software of mechanical kinetics to perform simulation experiment of car steering stability. Design and carry out experiment of snaking motion and turning braking. Prove the correctness of simulation model through analysis of the findings of experiment and comparison of them with the findings of real car experiment.
Statistical Method Used for Doing Better Corneal Junction Operation
Authors: Rezaeiye Payam Porkar , Rezaeiye Pasha Porkar , Karbalayi Elahe , Gheisari Mehdi
Published: July 2012

These days to gain classification system with high accuracy that can classify complicated pattern is so useful in medicine and industry. In this article a process for getting the best classifier for lasic data is suggested. However at first it's been tried to find the best line and curve by this classifier in order to gain classifier fitting, and in the end by using the Markov method a classifier for topo graphs is gained. What are mentioned in this article are supposed to gain a strong classifier so that under Marko theory can choose eyes appropriate for corneal graft.
An Integer Programming Approach to Optimize the Plantation in Order to Reduce Global Warming
Authors: Vanlisuta C. , Prombanpong Suksan
Published: July 2012

The objective of this paper is to determine the number and species of trees to be planted in order to maximize a profit through an integer linear programming model. The mathematical model is developed in terms of the profit function. This objective function is therefore, a difference between carbon credit revenue and costs of plantation. The economical plants are only considered in the model. Consequently, fourteen different tree species are to be investigated. The objective function is subjected to several constraints i.e. planting area, carbon sequestration and so on. The planting envelope of each tree is assigned 4 by 4 meters. In this paper, the Eastern part of Thailand is considered the case study. It is found that three kinds of plants, Copper pod, Cananga, and Bullet wood are suitable for planting. A number of trees to be planted in 1600 square meter are twenty, thirty, and fifty plants respectively. The profit earned is of 12,112 $ per year in the next fifth year.
Preparation and Preliminary Characterization of Chitosan from Catharsius molossus Discards
Authors: Ma Jia Hua , Tan Cheng Jia , Deng Xia , Xin Chao
Published: July 2012

Preparation techniques of chitosan from Catharsius molossus L. processing discards were studied by orthogonal design. Preparation techniques were as follows:demineralizing: soaked for 30 min at 80 °C with 1.3 mol•L-1 HCl, then kept for 12 h under room temperature. Deproteinization and delipidation: treated for 6 h at 90 °C with 4 mol•L-1 NaOH. Decolorizing: soaked at room temperature with 3% KMnO4, then treated with 2% oxalic acid at 70 °C. Deacetylation: treated for 6 h at 110 °Cwith 14 mol•L-1 NaOH. Properties of chitosan were characterized by Fourier transform infrared spectroscopy(FTIR), X-ray diffraction (XRD), etc. It proved the technique was stable and feasible. The result also preliminarily showed that chitosan from Catharsius molossus L. was better than shrimp’s. It will be widely applicated in biomedical and other industrial areas with such exiciting properties.
Network Performance Comparison between Linear and Hybrid Topology Structure of WSN in Coal Mining Equipment
Authors: Gao Hong Liang , Wang Bing Wen , Gao Chao , Hu Xiao Ya
Published: July 2012

This paper analyzes the characteristics of current monitoring wireless sensor networks for coal mine safety and two kinds of typical system network architecture of mining working face in coal mine firstly, and then analyzes the network performance of the two kinds of network system theoretically. In order to compare the performance of WSN adopting linear topology and hybrid topology, we build the simulation model using NS2 to evaluate the performance through three indexes, i.e. total energy consumption, packet loss rate and average transmission latency. The research results show that the network adopting hybrid topology has better energy efficiency, and the network adopting linear topology has better performance in packet loss rate and average transmission latency.
ARM-Based Greenhouse Environmental Parameters Control System Design and Implementation
Authors: Xia Zhi Cheng , Wang Xiang Dong
Published: July 2012

The countries all over the world, the development of facilities agriculture that science and technology is to promote the modern facilities of the development of the agriculture basic power, biological technology, information technology, energy technology, the new material technology, high and new technology in agricultural facilities, make the comprehensive application of facilities agriculture become highly intensive industrial technology, to the large-scale, mechanization automation and information way, promoted the sustainable development of modern agriculture[1-2]. As China's economy continues to develop, more and more greenhouses, more and more popular, but the intelligence levels of high and low, in recent years learning to the advanced level , technology continues to develop [3-4]. Control over most of the greenhouse with the IPC, high cost, is not conducive to large scale, then switch to single-chip, but the structure is relatively simple external circuit design complexity, is not conducive to the latter part of the system upgrade, unable to complete the complex control and meets the requirements for low-cost agricultural facilities. Therefore, the study of advanced ARM microprocessor based greenhouse control system meets the requirements for low-cost agricultural facilities, but also well positioned to meet the functional requirements of small and medium sized greenhouse. And has a very good human-computer interaction and communication functions, is of great significance and practical value.
Effect of Production Factors on Formaldehyde Emission of MDFPs
Authors: Sun Jin , Wang Xiao Bo , Lin Rui Hang , Lin Yan , Gao Zhen Zhong
Published: July 2012

Simulation of the common application environment of furniture were carried out, effects of different processing methods, storage time and airtight time were investigated. The results showed that the longer storage time or shorter airtight time was, the lower formaldehyde emission was. While the shedding of edge banding and metal connecting parts would increase the formaldehyde emission.
Effects of Environmental Factors on Formaldehyde Emission of MDFPs
Authors: Sun Jin , Wang Xiao Bo , Lin Yan , Lin Rui Hang , Gao Zhen Zhong
Published: July 2012

The formaldehyde emission test of MDF decorated with a paper sheet impregnated thermosetting resin was done under the simulated indoor conditions. The results showed that formaldehyde emission decreases after being placed under the condition of high temperature and relative humidity. In addition, the formaldehyde emission of medium density fiberboard with paper impregnated thermosetting resins (MDFPs) increases along with the increase of furniture-bearing ratio.
Oilfield Construction 3D Characters Base Motion Library Research and Application
Authors: Liang Ji Sheng , Zhou Xi Hong , Li Bo , Hui Wang , Shang Fu Hua
Published: July 2012

Oil field simulation training can be trained for construction personnel with lifelike, safety, standardize the interactive training, is an important aspect of the construction of digital oilfield, how to improve the d characters of construction development efficiency is still action today the hotspot. This paper based on the rehabilitation medicine field of the ADL 3d characters basis for action based data, this paper analyzes oil field production more than the standard of construction work, extracting oil field production construction base motion as a major operation data, using the 3ds Max development environment role animation component calls action data joining together new action, design and realize the oilfield construction d characters base motion library. And applied to multiple oil field simulation training system for the development of construction action, verified through practice.
ADL 3D Character Animation Design Table Research and Application
Authors: Liang Ji Sheng , Zhou Xi Hong , Li Bo , Shang Fu Hua , Hui Wang
Published: July 2012

3D character animation has into every aspect of our lives, How to raise the efficiency of development is still current domestic and international research one of the hot issues. This paper, based on the rehabilitation medicine ADL standard, Puts forward 3d characters ADL action based action split standards,According to the software engineering layered development and atom model thought, Design realize the ADL 3d character animation design table, Applied to the simulation training construction of action of oil field development, Effectively improve the oil workers 3d action role construction the efficiency of the development.
Study and Application of Flow Modeling Based on UML in Upstream Production Information System (A2)
Authors: Wang Hui , Li Guo Jia , Pan Jun Hui , Shang Fu Hua , Gao Xing
Published: July 2012

The situation and needs of data flow in upstream production information system were introduced, and then UML on the basis of knowledge and VP-UML on the basic functions were discussed. An example was given about how to use VP-UML to model effectively in data flow of exploration and production.
Research of New Material Restraining Coal Spontaneous Combustion by the Way of Release Water Mist
Authors: Pan Rong Kun , Zheng Li Gang , Yu Ming Gao , Lu Chang
Published: July 2012

In order to control the coal spontaneous combustion, a new material to restrain coal spontaneous combustion was researched in this paper. Through the platform of experimental was built, and the material was released by water mist, the characteristics of new material and water mist was used, and then researched the change concentration of O2, CO and CO2 in experimental platform under this new material, the change of temperature in different parts of burning space. As the same time, we contrast studied added material or not when the coal spontaneous combustion, the data and phenomenon were analyzed in experimental and the mechanism of restraining was put. This studies show that the material has good effect with restraining when adding this material by water mist to coal spontaneous combustion.
The PLC Research in the Program Control System of Thermal Power Coal Handling
Authors: Chen Xiao Min , Liu Xi Yan
Published: July 2012

With the rapid development of Chinese economy, the thermal power requirement is increasing not only in industry but also for the civil use in recent years. In China, the main fuel of thermal power is coal. Coal handling system places the consequence in the whole generate electricity system and has significant meaning to the power plant operation. The coal handling system of the thermal power plants has many types of equipment. The environment is vile with complicated control. If we control this system through manual mode, there will appear the imponderable questions. This article through the research of the coal handling system by the management of PLC can determine the long-term safe operation and reduce a mass of human power and material resources. It has the fundamental practical meaning and research value.
Hardware Design of Intellectualized Water Meter with Six
Authors: Sha Jian Qi , Xiao Zhe , Wang Wei Lian , He Le Sheng , Shi Ji Hong
Published: July 2012

Based on the Meter Bus technology, the paper explains how to implement switching principles for the multi-term field bus in different batches and sections as well as usages for the multiple-address branching operation design in detail.
Characterization of LUSI Mud Volcano as Geopolymer Raw Material
Authors: Al Bakri A.M. Mustafa , Rafiza A.R. , Hardjito D. , Kamarudin H. , Khairul Nizar I.
Published: July 2012

The mud of mud volcano samples were collected from an eruption site named ‘LUSI’ (Lumpur “mud” –Sidoarjo), East Java, Indonesia for characterization. Analysis showed that, the major constituents of mud are SiO2 and Al2O3 which are higher than those in fly ash. The particle of mud has a flake-shaped particle and the overall particle size is dominated by particles between 2.5µm – 25.0µm. The results of XRD shows that mud of mud volcano have a characteristic of structurally disordered compounds, and a set of peaks corresponding to minor crystalline phases such as quartz, feldspars, and kaolinite. FTIR adsorption bands of the raw material of mud have the chemical bonding between bands 1-5.
Multi-Perspective Decision Making in Product Design
Authors: Rong Zhi Jun , Liu Yue , Chen Kui Sheng
Published: July 2012

Product design is a multi-perspective group decision making process which has the different viewpoints together to create the solutions among stakeholders. In product design process, every stakeholder has his/her own subjective characteristics and variable perspectives which reflect his/her understandings of design objects. The perspective relationships between stakeholders will directly influence the speed of achieving solutions, which in turn affect design time and efficiency. By analyzing the similarity relationships between the participants' perspectives, this paper constructs perspective network model and applies structure matrix to develop perspective relationships. This paper focuses on incorporating perspectives into design process and developing the approaches to make decisions support for the optimal design solutions considering stakeholders’ perspectives. Finally, an example is used to demonstrate that perspective network model can analyze the impacts of perspectives on the solution.
Evaluation of an Automatic Pointing Assistive Program in Improving Computer Target Pointing Efficiency
Authors: Shih Ching Tien , Shih Ching Hsiang , Guo Nai Ren
Published: July 2012

The latest research adopted software technology to redesign mouse drive, and proposed an Automatic Pointing Assistive Program (APAP) to evaluate whether two children with developmental disabilities and people with disabilities would be able to improve their pointing efficiency. The APAP is designed to move a cursor to a target instantaneously once the cursor nears a target (inside the activation area). However, the evaluation of latest researches focused only on people with disabilities. This work exhaustively examined the cursor-capturing functions in a target-positioning task with APAP. The APAP functions are expected to help aged users and novices in operating a mouse efficiently and easily.
Estimating Measurement Error Based on Evidence Theory
Authors: Xiao Ming Zhu
Published: July 2012

Measurement error is traditionally represented with probability distributions. Although probabilistic representations of measurement error have been successfully employed in many analyses, such representations have been criticized for requiring more refined knowledge with respect to the existing error than that is really present. As a result, this paper proposes a general framework and process for estimating the measurement error based on evidence theory. In this research cumulative belief functions (CBFs) and cumulative plausibility functions (CPFs) are used to estimate measurement error. The estimation includes two steps:(1) modeling the parameters by means of a random set, and discrediting the random set to focal elements in finite numbers; (2)summarizing the propagation error. An example is demonstrated the estimation process.
Research on Mining Machinery Personnel Tracking System
Authors: Han Ling Ling
Published: July 2012

Base on the RFID technology and CAN technology, the paper designed a underground mine personnel tracking system.[1] With the RFID technology, the personnel with the electric tags can be positioned and identified. The information collected by the writer can be transmitted to the surface with the CAN bus line, personnel’s localization are realized. In practical applications, the system runs well, which achieved good economic and social benefits.
Two Wheel Differential Robot Kinematic Analysis and Control
Authors: Wang Wei Xin , Zhang Wei
Published: July 2012

The paper analyse the two wheel differential robot motion control, and the membership function of affiliation between the amount of input and output was established.Then combine the incremental PID control algorithm with fuzzy control strategy, and it was used to the two wheel differential robot motion control model. By the MATLAB for simulation, get the control system response curve and achieve a satisfactory result.
Numerical Investigations of Solid-Liquid Two-Phase Turbulent Flows through Francis Turbine
Authors: Tang Xue Lin , Yang Shang Yu , Wang Fu Jun , Wu Yu Lin
Published: July 2012

This work is to investigate solid-liquid flows inside entire passage of a large Francis turbine unit and a modified algebraic model is proposed to take the solid-phase turbulent viscosity into consideration based on realizable turbulence model for the liquid phase and further development of the commercial CFD software. The energy conversion between the pressure and velocity, and the sedimentation distribution characteristics around all the hydraulic parts are simulated. The calculated velocity and sedimentation concentration distributions inside the runner are not uniform due to the effect of the centrifugal and Coriolis force. In addition, the calculated eccentric vortex rope in the draft tube causes vortex cavitation and vibration to the turbine unit, which leads to the eccentric sedimentation distribution. The simulation results (i.e., the mixture pressure, velocity and sedimentation distributions) are in good agreement with the natural rule, suggesting that the simulation strategies are capable to handle two-phase flows over complex geometries. The computational results can provide the useful information for hydraulic turbine designs. Future work will focus on the optimizations of hydraulic impeller designs using simulated results.
TG/DSC Comparison of Sulfur Microcapsule Prepared in Scale-Up Vs in Lab Level
Authors: Zhang Zhi Sen , Zhao Quan Jun , Xiao Hui Jin , Wang Shu Jun
Published: July 2012

Sulfur is an important raw chemical industry material which is widely used in a variety of industries. In recent years, several new natural gas purifying plants was built in Sichuan province, the availability of sulfur has considerably grown. New sulfur applications should be innovated to meet the sulfur consumption. The main use of sulfur is vulcanizing the rubber as an agent. With the increase of the vulcanizing temperature, however, the solubility of sulfur in the rubber will become bigger, the more amount of sulfur additive should be needed which results in the isolation of sulfur appearing on the rubber surface. The isolation will not only damage the appearance but also lower the surface adhesion of the rubber which can make the bondage process more difficult. For the purpose of decreasing the isolation, it is necessary to select vulcanizing agent with bigger relative molecular mass, the appropriate amount and control the positive vulcanizing strictly. The two main solutions for avoiding isolation are: (1) choosing the vulcanizing agent with bigger relative molecular mass, i.e. IS (insolvable sulfur) [1]; and (2) using the encapsulated sulfur [2]. For the reason of huge energy cost and toxicity in the IS production, the encapsulated sulfur preparation method is introduced. In this paper, a scale-up sulfur encapsulating process was planned and carried out after the lab trial was successfully finished. The TG/DSC analysis was made to investigate the thermal characteristics of the sulfur microcapsule.
Miniaturization of the Quasi-Traveling Wave Ultrasonic Linear Motor Using a Ring Type Rectangular Vibrator
Authors: Zhang Shun Xin , Li Chao Dong
Published: July 2012

Ultrasonic linear motor, Piezoelectricity, Rectangular vibrator, Traveling wave Abstract. With the aim of realizing quasi-traveling wave drive in ultrasonic linear micro motors, a novel quasi-traveling wave ultrasonic linear motor using a ring type rectangular vibrator with the sizes of 39mm×6mm×12.7mm is proposed. The quasi-traveling wave is excited and propagates along the ring type rectangular vibrator depending on the superposition of two orthogonal flexural-vibration modes with a spatial phase shift of 90 degrees. 7 piezoelectric ceramic elements are used to excite two working modes of the vibrator. The vibrator structure was designed and eigenfrequency degeneration was realized by Finite Element Analysis (FEA) method. The modal test shows that the design scheme was tenable. The excitation and propagation of quasi-traveling wave were proved by laser vibration test. The trial motor gave a maximum driving velocity of 162.5mm/s and a maximum load of 8.5N, while the excitation frequency was 66 KHz and voltage was 160Vpp.
Quality Improvement of Nonwoven Facial Mask by Using Taguchi Methodology
Authors: Su Te Li
Published: July 2012

Among facial masks, the nonwoven facial mask is most popular. So how to enhance the quality of nonwoven facial mask is important for promoting competitiveness. Therefore, the purpose of this study is to find out the optimal combination of parameters of hot wheel press. First, Taguchi methodology was used to carry out parameter design and chooses the parameters of hot wheel press that would affect the quality of nonwoven facial mask as the experimental control factors; and then selects an appropriate orthogonal array to perform the experiments. In addition, by executing with main effect analysis, it is able to decide upon the optimal combination of parameters of hot wheel press and the significant factors of the nonwoven facial mask, and then applying the confirmation test to verify the experimental reliability and reproducibility.
Usage of Indigenous Architectural Patterns for Manufacturing Industrial Housing, Case: Renovation Project of Odlajan of Tehran, Iran
Authors: Mahdavinejad Mohammadjavad , Bemanian Mohammadreza , Hajian Mina , Pilechiha Peiman
Published: July 2012

Shortage of housing and the growth of increasing demand of it are often considered as the essential problem in the developing countries. The studies indicate the issue is truly correct about Iran. The factors which always cause the problem of shortage of housing that the main and important of which in Iran are: the growth of population, need for renovation of old settings, inappropriate and imperfect current building industry and destruction by natural factors such as earthquake. All of these factors result in the considerable growth of housing demand. In this condition, mass production of housing in order to acceleration of building construction is necessitated. One of the difficulties involving mass production is not using of indigenous patterns in constructing process. The goal of this research is using of indigenous patterns in mass production and industrial housing and also replying to the question of how you can use the indigenous patterns in industrial architecture. Odlajan district of Tehran has been selected as case study. The typology of the existing housing extracted. Then selective patterns for industrial construction are offered. This research involves the simulation method in hypothesis test. Data collecting is based on librarical studies and field survey with the descriptive-analysis techniques.
Sequencing Analysis of HA-A/A-MCO Process
Authors: Zuo Ning
Published: July 2012

This study applies PCR-DGGE fingerprinting technique to analysis the bacterial community structure of phosphorous removal and denitrification system. Through strains identification, it is found that acinetobacter sp.is the base of keeping favorable phosphorus removal effect, Spirochaeta sp.undertakes the function of organic matters removal, Bacillus sp. and Lampropedia hyalina sp.can propagate largely in the germiculture area(No.1 oxic tank), and can be preyed on by highlevel microbe(such as protozoa and metazoan) in protozoa growing area(No.2oxic tank) and metazoan growimg area(No.3 oxic tank). The predation between highlevel microbe and low grade microbe can promote efficient sludge reduction of HA-A/A-MCO process.
Diode Based Trimode Multi-Threshold CMOS Technique for Ground Bounce Noise Reduction in Static CMOS Adders
Authors: Pattanaik Manisha , Raj Balwinder , Sharma Shashikant , Kumar Anjan
Published: July 2012

In this paper a high performance diode based trimode Multi-Threshold CMOS (MTCMOS) technique is introduced which minimizes standby leakage current and provides a better way to control the ground bounce noise during sleep to active mode transition using one additional mode i.e. hold mode. Analysis of trimode MTCMOS technique using low power 16-bit full adder has been done for reduction of standby leakage current and ground bounce noise. Further, to evaluate the effectiveness of diode based trimode Multi-Threshold CMOS technique, simulation has been done on low power 16-bit full adder circuit with BPTM 90nm technology at room temperature with supply voltage of 1 V. Diode based trimode Multi-Threshold CMOS technique reduces ground bounce noise by 89.36% and standby leakage current by 19.24% as compared to the standard trimode MTCMOS technique.
The Research of Distribute Temperature Monitoring System Early Warning Fire in Coal Belt Conveyor
Authors: Zhang Xi , Fan Tian Nan
Published: July 2012

The lack of mine belt conveyor fire early warning system of the original mainly manifested: Belt conveyor of coal mine special working environment is not conducive to fire warning system installation and repair detection; The roller at work does not stop rotating, Cause fire early warning system can not effectively monitor each idler roller. The author uses the DTS for belt conveyor used for reconstruction technical analysis. Specific technical reformation key issues include: Reasonable installation design makes the DTS system can be fully applied; In the roller for continuous temperature measurement of the flange joint attenuation data analysis Distributed temperature system ( DTS ) is a new high-tech products e reasons In the domestic fire warning system with application fields are currently not many .But it gradually expanded, From a single temperature detection, to the dam, tunnel fire warning. More applications are being developed as potential safety hazard in coal mines: very high places ,Need more advanced fire warning system , In the doctoral program foundation of State Education Ministry funded by Chongqing University in 1987 and the first in the country in the distributed optical fiber temperature measurement technology research, completed a feasibility study[1].Erdos Group Based on distributed optical fiber temperature monitoring system in coal mine belt conveyor fire warning system combining, obtained good results.
Reducibility of Oxide-Ion Conductors La2-XBaxMo2-YWyO9-δ
Authors: Li Dan , Li Xiang Hu
Published: July 2012

The reducibility of oxide-ion conductors La2-xBaxMo2-yWyO9-δ(x = 0, 0.06; y = 0, 0.1) were studied in the reducing atmosphere of 5%H2 + Ar by means of impedance spectroscopy measurement.. All substitutions can enhance the conductivity and improve the reducibility in the temperature range from 548 to 923 K. The double substitution of Ba and W has a better stabilizing effect than the single tungsten substitution.
Carbon Black Selective Dispersion and Electrical Properties of Epoxy Resin/Polystyrene/Carbon Black Ternary Composites
Authors: Ma Chuan Guo , Liu Ming
Published: July 2012

Carbon black (CB) selective dispersion and conductive properties of immiscible thermoplastic/thermosetting polymer blends consisting of polystyrene (PS) and epoxy resin (EP) were investigated in this paper. The results showed that CB particles are preferentially localized in EP phase in PS/EP blends. The blend with 10 pbw (parts by weight) PS presented an EP continuous phase structure, and both blends with 20 pbw and 30 pbw developed into a bi-continuous phase structure. The selective dispersion of CB particles was explained by thermodynamic parameters. The phase structures of blends have important influences on both conductive and dielectric properties. The blends with 10 pbw PS has a very low percolation threshold nearly 0.25wt%.
Preparation and Characterization of Bentonite Supported Silicotungstic Acid
Authors: Li Dan Na
Published: July 2012

In this paper, the bentonite supported silicotungstic acid with Kiggen structure was prepared by the adsorption of silicotungstic acid on the pretreated bentonite. The bentonite supported silicotungstic acid was characterized with IR、XPS and TG/DTA. The effect of acidification and loading time on the loading amount of silicotungstic acid was investigated. The results indicates that bentonite supported silicotungstic prepared with high temperature activation is stable.
Data Process for Reverse Engineering Technology
Authors: Guo Hui , Hu Yan Hui , Li Xiao Jing
Published: July 2012

Reverse engineering has become an important tool for CAD model construction from the data points, measured by a coordinate measuring machine (CMM), of an existing part. However, due to special structure and complex topology relation, obtaining full surface data of a prototype is not an easy thing and should carry out complex data process procedure to get global model. The paper presents a method for pre-processing data points for curve fitting in reverse engineering. The proposed method has been developed to process the measured data points before fitting into a B-spline form. The method is implemented and used for a practical application in reverse engineering. The result of the reconstruction proves the viability of the proposed method for integration with current commercial CAD systems.
Analysis of Steel Bar Surface Defects Based on Machine Vision
Authors: Li Wu Bin , Lu Chang Hou , Zhang Jian Chuan
Published: July 2012

In order to guarantee the steel bar quality, we describe the category of steel bar surface defects in details. Generally, there are about two main categories of steel bar surface defects which include linear and area-like defects. Secondly, the characteristics of the steel bar surface image are analyzed at large. Both of them support a foundation for the future inspection of steel bar surface quality.
The Development Mode of Mechanical and Electrical Products 3D Part Library
Authors: Du Jiang , Cao Yan
Published: July 2012

According to the requirements to reuse the design resources such as the three-dimensional parametric part models in the new products development process, the key issue to develop the 3D part library which its content can be expanded and recombined are researched based on the Part with the character of standardization and universal. The paper provid the object and the system structure of this 3D part library firstly. Then, the method to classify the Part data and the corresponding storage way are discussed according to the function of the classified Part data.Finally the method to develop management program of this 3D Part library is discussed based on the Pro/E and Access. The method provided in the paper can be a general way to develop 3D part library for different application field.
Study on Laser Ignition Characteristics of NEPE Propellant
Authors: Zhu Guo Qiang , Chen Xiong , Zhou Chang Sheng , Wu Qi Jun
Published: July 2012

The ignition process of NEPE propellant by a CO2 laser ignition system has been investigated experimentally. The effect of laser heat flux density on the ignition delay time of NEPE propellant was examined. The ignition delay time of NEPE propellant was decreased along with the increase of laser heat flux density. The effect of ignition heat flux density on ignition delay time decreases when the laser heat flux density is more than 290 W/cm2. This heat flux density value can be used as igniter design reference value. The ignition delay time increases dramatically along with the decrease of laser heat flux density when the laser heat flux density is lower.
State of the Art in Rapid Prototyping
Authors: Wang Hao , Zhang Hong Ge
Published: July 2012

Rapid prototyping has quickly grown in use and importance in industrial applications during the past decade. Rapid prototyping, though a relatively new discipline, has proven to be a valuable tool in the reduction of the time and cost associated with developing new products. This paper summaries the working principle and compares the application fields, machining cost and process parameters for four typical RP technology. The author discusses the significant performance for modern industry, analyses the merits and faults and indicates the development object for RP technology.
Mechanism for Synthesizing Barium Hexagonal Ferrite by Sol-Gel Method
Authors: Liu Yue , Wang Ting Jin , Liu Ying , Li Xiao Jie , Liu Ying
Published: July 2012

A new mechanism has been proposed for synthesizing barium ferrite by sol-gel method. The mechanism takes account of the structure of barium hexaferrite and the least structure change principle. It is useful in optimizing the synthetic conditions.
The Application Analysis of Crude Ricin in Terrorism
Authors: Wang Xin , Peng Peng , Li Shan Mao , Jiang Da Wei , Liu Guo Hong , Wang Ji Zhang , Li Wei
Published: July 2012

Ricin is a highly toxic material, which can be extracted from semenricini. Due to the extensive raw material sources and the simple extraction process, it is very possible for ricin to become one of the attack means for terrorist. Therefore, it is necessary to make analysis of its extraction method, toxicity, and the corresponding routes for harm transmission.
Applications of Neural Networks in the Hairiness of Ring Spinning Polyester/Cotton Yarn Prediction
Authors: Zhao Bo
Published: July 2012

In this paper, back-propagation (BP) neural network model is introduced and established. This work describes the application of the BP artificial neural network model for the purpose of predicting the polyester/cotton yarn hairiness. This approach has been developed and evaluated with the use of multiple sets of data, comprising of a range of processing parameters. The yarn hairiness of ring spinning is strongly related to the processing parameters. However, it is difficult to establish physical models on the relationship between the processing parameters and the yarn hairiness. Due to the artificial neural network can fully approximate any complex nonlinear system and study dynamic behavior of any serious undetermined system. It has a highly parallel calculation ability, strong robustness and fault tolerance. So using the artificial neural network to predict the polyester/cotton yarn hairiness of ring spinning is a very effective way. The experimental results and corresponding analysis show that the BP neural network model is an efficient technique for the yarn hairiness of ring spinning prediction and has wide prospect in the application of ring spinning yarn production system.
Tellurium Recovery from the Unique Tellurium Ores
Authors: Guo Ya Fei , Zhang Nan , Li Dong Chan , Tang Fa Mang , Deng Tian Long
Published: July 2012

Generally, along with the rapid economic development in our country, the requirement of mineral resource is gradually increasing. Compared with the traditional metallurgy, the biohydrometallurgy has the merit of light damage of environment, low cost, and a few investments, and then it can treat with very low-grade ores even industrial disposals. Since the discovery of scattered elemental tellurium deposit in China, the development and utilization of this unique independent tellurium ores were studied. In this paper, firstly, the progresses on tellurium recovery process from the unique tellurium ores were summarized, and then, the experimental results on bioleaching in our lab were presented.
Detection of Seam Offset Based on Molten Pool Characteristics during High-Power Fiber Laser Welding
Authors: Liang Jian Bin , Gao Xiang Dong , You De Yong , Li Zhen Shi , Ruan Wei Ping
Published: July 2012

Laser welding includes the heat conduction welding and the deep penetration welding. Deep penetration welding can not only penetrate the material completely, but also can vaporize the material. An important phenomenon during deep penetration welding is that molten pool in the weldment will appear a keyhole. The formation of the keyhole leads to a deep penetration weld with a high aspect ratio and this is the most advantageous feature of welding by high-energy-density beams. Small focus wandering off weld seam may result in lack of penetration or unacceptable welds, and largely reduce heating efficiency. In a fiber laser butt-joint welding of Type 304 austenitic stainless steel plate with a high power 6kW continuous wave fiber laser, an infrared sensitive high-speed video camera was used to capture the dynamic images of the molten pools. The configurations of molten pools were analyzed through image processing techniques such as median filtering, partial Otsu threshold segmentation and Canny edge to obtain the edge of keyholes and molten pools. The circular degree and the area of keyholes and the width and average gray of molten pools were defined as characteristic parameters to reflect the seam offset between the laser beam and the weld center. By analyzing the change of characteristic parameters during welding process, it was found that these parameters were related to the seam offset. Welding experimental results and analysis of characteristic parameters confirmed that the seam offset could be monitored and distinguished by molten pools configuration during high-power fiber laser welding.
Development of a Mechanical Processing Material Database System
Authors: Cao Yan , Zhou Ai Ling , Bai Yu
Published: July 2012

Reasonable selection of materials and their processing methods directly influences the quality and costs of products. Therefore, material information system plays an important role in material research, development, production, application and education. Due to the superiority and development speed of database technology, it has been widely applied to mechanical processing industry, providing technical support for mechanical manufacturing automation. In the paper, a mechanical processing material database system is put forward. Its key technologies and developing approach are discussed in detail. The establishment of processing data information database, which can provide reasonable or optimal technological parameters, is one of the most effective measures to enhance the competitiveness of an enterprise.
A Machine Tool Fixture Library Management System Based on Assembly Knowledge Description
Authors: Cao Yan , Yang Dan , Bai Yu
Published: July 2012

Based on Group Technology, a machine tool fixture library management system based on assembly knowledge description is put forward to maximize the reuse of fixture design knowledge and experience. According to GT classification results, fixture parts are divided into standard ones and non-standard ones. To support parametric assembly, a reuse library is used for parametric standard part design. For the non-standard parts, second development technology is used to realize their parametric design based on 3D model templates. Parametric assembly design is achieved based on assembly relation description. SolidWorks platform, VB programming language and Access database are used to develop the system that includes feature-based parameter-driven parts and assemblies for machine tool fixtures.
Influence of Preparation Conditions of the Solid Base Catalyst on the Performance of Synthesizing Polyglycerol
Authors: Qu Jia Wei , Wang Min Wei , Wang Ren Lang
Published: July 2012

Different solid base catalysts used for the polymerization of glycerol were prepared by impregnation. Catalyst type and the preparation conditions were optimized on the base of polymerization degree. Results showed: the best catalyst was KF/Al2O3, and optimal condition for catalyst preparation was as follows: loading of 40% KF, calcinations temperature 600°C. The polymerization degree of 5.92 was obtained under the following reaction condition: the amount of catalyst 11.62,reaction temperature 250°C, reaction time 4 h.
Polymorphic Changes of Calcite Carbonate Sediment in Aqueous Solution
Authors: Chen Jian Xin , Sun Quan , Liu Teng Jiao , Ulrich Joachim , Xie Lei
Published: July 2012

Calcium carbonate (CaCO3) is abundant in nature, and is also an important material applied in industry as pigment, filler material, etc. It is a challenge to control the desired CaCO3 properties for industry applications. In this study, three typical morphologies of CaCO3, calcite, aragonite and vaterite were prepared. The crystallization temperature and addition of acrylic-acrylate-sulfosalt copolymer play a significant effect on the polymorph change of CaCO3 sediment. Higher temperature promoted the formation of aragonite, while more additives tended to form the vaterite. The x-ray diffraction and scanning electron microscope analysis confirmed the formation of CaCO3 with various polymorphs.
Phosphine-Free Synthesis and Photoluminescence Properties of ZnSe:Cu/ZnSe/ZnS Core/Shell Nanocrystals
Authors: Niu Jin Zhong , Tian Gui Min , Zheng Li Li , Cheng Yong Guang , Zhu Shuang Mei , Hao Hao Shan
Published: July 2012

High quality zinc blende ZnSe nanocrystals were successfully synthesized using an environmentally friendierly phosphine-free method. Using pre-synthesized ZnSe nanocrystals as core to dope Cu2+ ions, we obtained ZnSe:Cu/ZnSe and ZnSe:Cu/ZnSe/ZnS core/shell nanocrystals. Absorption spectruscopy, photoluminescence (PL) spectruscopy, X-ray diffraction (XRD), and transmission electron microscopy (TEM) were used to characterize the structures and properties of as-synthesized three kinds of nanocrystals. The results demonstrated that nanocrystals had well dispersion and narrow size-distributions, and the PL emission peak of as-synthesized ZnSe:Cu/ZnSe/ZnS core/shell nanocrystals could be easily tuned from 480 nm to 520 nm by using different sized ZnSe cores.
Phase Equilibria of the Salt-Water System of Lithium and Borate Ions
Authors: Yang Li Juan , Shen Dong Liang , Wang Shi Qiang , Guo Ya Fei , Deng Tian Long
Published: July 2012

It is well known that the exploitation of brine resources of salt lakes is based on the relevant phase equilibrium and phase diagrams. In this paper, the progresses on the stable and metastable equilibria, thermodynamic properties and predictive solubilities of the brine system containing lithium and borate ions at present were summarized. The problems existed and the new trends in the future were also carried out.
Solid-Solid Synthesis, Characterization and Thermal Decomposition of Thiourea Complex of Antimony Trichloride
Authors: Zhong Guo Qing , Gu Mei , Jia Yu Qing
Published: July 2012

The solid complex of antimony trichloride with thiourea was synthesized by solid-solid reaction or liquid state reaction of antimony trichloride and thiourea. The formula of solid complex is all SbCl3[CS(NH2)2]3. The crystal structure of the complex belongs to monoclinic system and the lattice parameters are: a = 1.2426 nm, b = 1.6396 nm, c = 1.9254 nm and β = 96.24° for solid-solid reaction, and a = 1.2343 nm, b = 1.6585 nm, c = 1.9252 nm and β = 96.46° for liquid state reaction, respectively. The infrared spectra reveal that antimony ion in the complex is coordinated only by the sulfur atom of CS(NH2)2. The possible pyrolysis reactions in the thermal decomposition process of the complex, the experimental and calculated percentage mass loss were also given.
PH-Sensitive Nanoparticles of Derivated Dextran Grafted with 1-(3-Aminopropyl) Imidazole
Authors: Lei He , Zhang Guo Liang
Published: July 2012

Dextran catches increasing attentions as a drug carrier because of its biocompatibility, biodegradability and ease of modification. In this study, we synthesized the derivated dextran by grafting with 1-(3-aminopropyl) imidazole. The dextran-based nanoparticles with sizes of 1H NMR, SEM, AFM and Zetasizer.
Effect of Fe Content on the Structure and Properties of Sr-Fe-Co Oxides
Authors: Huang Xiang Hong , Qiao Jun , Zhang Qian Feng
Published: July 2012

SrFexCo0.5O3-δ (x=0.5, 0.75, 1.0, 1.25) powders have been synthesized by the solid state reaction process. The effect of Fe content on the microstructure and properties of the SrFexCo0.5O3-δ powders were investigated in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermo-gravimetric analysis and differential scanning calorimeters (TGA/DSC). XRD results reveal that the phases of the SrFexCo0.5Oδ powders are dependent on the content of Fe. X-ray diffraction. SEM images show that the obtained powders have similar morphology with particle structure and uniform size distribution. The phase transition from ordered brownmillerite structure to disorder perovskite structure is strongly dependent on the content of Fe by the TGA/DSC analysis of the SrFexCo0.5O3-δ powders. Phase transition temperature increases from 770°C to 800°C with the x value in the SrFexCo0.5O3-δ increasing to 1.0. But the phase of the SrFe1.25Co0.5O3-δ powder maintains unchanged behaving good phase stability and chemistry stability.
Synthesis and Structural Characterization of Multifunctional Silicone Co-Polymer
Authors: Song Mi Zhao , Zhang Hui Jun , Zhao Xin , Zhang Jing Bin
Published: July 2012

Acrylic acid (AA) and stearyl acrylate (SA) were co-polymerized with vinyl-ended polysiloxane using AIBN as the catalyst. The polymer has been characterized by FT-IR and1H-NMR techniques. The co-polymer can be used as retaining agent, which has the ability of fatliquoring and water-proofing for full chrome leather. The results were compared with non-reactive silicone treated leathers on the aspect of reactive ability with mineral-tanned leather. It was found that the synthesized co-polymer has superior permanent anti-water properties when used on full chrome leather.