bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultraviolet Spectrum Analysis of 1-methyl-3-butyl imidazole Tetrafluoroborate in Ethanol
Authors: Song Yang Yang , Tian Peng , Yu Lu
Published: August 2013

1-methyl-3-butyl Imidazole chloride is prepared by 1methyl imidazole and chlorinated n-butane. BMIBF4 ionic liquid is prepared by BMIC and NaBF4 in the acetone. Scanning ionic liquid in 200~400nm wavelength range, get UV-spectrum curve. The ionic liquid used in the experiment has obvious absorption in 200~400nm wavelength range, and the maximum absorption wavelength determined by ultraviolet spectrometry method is 222nm. Linear regression equation is y =0.02311x+0.02861. Correlation coefficient is 0.99925, indicating there is high related degree between the solution concentration and the absorbance value. The linear range of BMIBF4 ionic liquid in the ethanol is 1-75 mg/L. Take samples randomly and have a repeated determination 5 times, the precision is RSD=0.25%, the recovery rate is between 97.4%~102%.
Application of Composite Materials in Children's Outdoor Playground
Authors: Li Ren , Wang Kun Qian , Wang Fu Guang
Published: August 2013

This paper mainly introduces the performance characteristics of the composite materials and describes their application in children's outdoor playground, focusing on the potential applications of composite materials in the pillars, platforms, seats, carpets, safety net and other aspects of playground and looking forward to their development prospect in this field.
The Reliability Prediction of Component Cooling Water System (CCWS) Based on Copula
Authors: Guo Hai Kuan , Zhao Xin Wen , Yan Feng , Zhao Yun Fang
Published: August 2013

According to correlation between the equipment of CCWS, this paper uses Copula to describe correlation of the system, establishes the reliability prediction model of CCWS and does the quantitative calculation. Analysing the results shows that the reliability of redundancy system is much higher than that of single component, but dependent failures between the equipment decrease the reliability of system. And also shows that this model can be perfectly used in the reliability prediction of CCWS.
CLC number: TL364+.1 Document id code: A
Development of Power Supply for Inverter Electron Beam Welder Based on Zero-Voltage Switching Technology
Authors: Liu Zhi Jie , Wei Shou Qi , Zhu Si Si , Su Zhen Yuan , Li Ming , Chen Xu
Published: August 2013

In this paper, introduce the power supply for full-bridge inverter high frequency high voltage electron beam welder, applying PWM-Buck integrated circuit and zero-voltage switching technology and the control system. Getting continuously adjustable, stable over current and over voltage protection, and the regulator the accuracy requirements of output voltage from high voltage power supply, and improve the energy conversion efficiency of the system.
Research on Microelectronic Packaging Position Detection Based on Machine Vision
Authors: Li Chang You , Wang Wen Hua , Wang He Ping , Jia Ming Ming , Shang Jing Yu
Published: August 2013

A microelectronic packaging position detection method based on machine vision is proposed. Analyze the color and shape characteristics of the FC-D30 handle circuit boards, extract the R component. Complex background is removed through using image segmentation technology, this research utilizes image smoothing technology to eliminate the noise after segmentation. And use Sobel operator to do edge detection. The package position is detected by using image feature extraction techniques, and finally the position is located accurately. The experimental results show that, the average detection time of this algorithm is 180 milliseconds, the correct positioning is 99%. Microelectronic packaging position can be located fast and accurately by using machine vision technology, this mothod has a good theoretical and practical value.
Research on Application of Fuzzy PID Control in Linear Servo System
Authors: Sun Xiang Cheng , Qin Hai Chen , Chen Jian Kui
Published: August 2013

Due to the nonlinearity, time-varying and load disturbance in linear servo system, the conventional PID control is hard to get an ideal control effect, this paper deduces the mathematical model of the permanent magnet linear synchronous motor (PMLSM) direct drive system, designs a fuzzy PID controller by combining fuzzy control with conventional PID control, adjust the parameters of PID controller in real time by making use of fuzzy control's ability of adjusting online. Simulation and experimental results show that the fuzzy PID controller is superior to the conventional PID controller in responsiveness, steady performance and dynamic tracking, which can shorten the positioning time, improve the system positioning accuracy.
Small Digital Angle Sensor Based on MEMS
Authors: Liu Jiang Yi , Sun Shu Ying
Published: August 2013

One design method of small digital angle sensor based on microelectronic mechanical system (MEMS) is introduced. The angle sensor is build with the embedded microprocessor STM32F103 as the core. The acceleration value of MEMS accelerometer in X, Y, and Z-axis directions was used to calculate the angle of measured target on the horizontal direction and vertical direction, and the digital and miniaturization of digital angle sensor are realized.
Design and Electro-Thermal Analysis of a New Micro-Hotplate for Gas Sensor
Authors: Zhang Xiao Bo , Wang Guo Guang , Liu Chang Bai , Liu Li , Zhai Wei Wei , Wang Lian Yuan , Liu Zhen , Bo Xiao Qing , Chi Xiao
Published: August 2013

Electro-thermal analysis of a new micro-hotplate designed for gas sensor has been studied in this paper. Through the comparison of materials, select pt as electrodes material, Si, SiO2 as substrate materials. Then, through the optimization of substrate structure, in order to make the gas sensor obtain perfect properties of good temperature uniformity, the thickness of Si substrate, thermal insulation layers are 150, 50, 100 µm respectively. The new micro-hotplate structure is benefit for the improvement of sensitivity and overall performance of the sensor.
The Experimental Design of Fuze Electromagnetic Inductive Setting about Reliability
Authors: Li Zhi Jian , Zhao Xiao Li , Liu Qiu Sheng , Zhou Xiao Dong
Published: August 2013

There isnt an efficacious assessment method to learn reliability of fuze electromagnetic inductive setting, only through statistics the numbers of feedback information to learn reliability. The article analyzes theory of fuze electromagnetic inductive setting about circuit. For this problem, each module with the fuze setting system is separated, design out a trial experimental terrace, and build the experimental proposal with changing the environment factors, measure the change of the wave shape characteristic about each module to get the characteristic parameter of fail-safe critical state wave shape of fuze setting. Get qualitative analysis methods to assess the reliability of fuze electromagnetic inductive setting in order to analyzing the electromagnetic inductive setting the setting reliability by the way of analysis to the wave shape distortion state.
The Application of CRFSD Algorithm on Data Fusion of WSN
Authors: Chen Yang , Yong Qi Dong , Yang Shi Long , Ding Ze Zhong
Published: August 2013

The data redundancy will produce in the procedure of gather of graphics and video or the data in the WSN, and then the data fusion is needed. On the basis of the previous method of data fusion, the data method based on information support (that is CRFSD) is provided, and through the simulation experiment, which is held in the time domain, spatial domain, temporal and spatial domain, the data fusion is realized.
Based on 6LoWPAN Technology Distributed Energy Efficiency Terminal Development
Authors: Tang Li Zhi , Xu Kun Peng , Qi Xue Qing
Published: August 2013

This paper presents a 6LoWPAN-based distributed energy efficiency of the terminal design, the distributed terminal node hardware and software design are discussed in detail and discussion. Packet reception rate of the nodes in a small experimental platform, the average delay time and the average consumption of energy and other performance parameters were analyzed. Experimental data show that the terminal node can well realize the IPv6 node interconnection of distributed energy efficiency and ensure its continuity.
Application of Integrated Design of the Belt Drive System Based on the Platform of Research and Development of the VBA
Authors: Feng Xian Zhang , Cui Yan Mei , Yu Li Hong , Jiang Zhi Qiang , Cheng Jun Wei , Chen Liang Ji
Published: August 2013

In order to the integrated design of the geometric parameters and drawing the pulley parts, based on R & D platform of the VBA with the CAD software, hence after analyzing the selection belt type, determine the reference diameter of the belt pulley, choosing length and the amount of the belt, and designing and drawing the pulley parts, in which include the drawing the tooth of v belt pulley, chamfers and grooves, keyway, hatches, and part dimension, etc. Conventional belt drive system is successfully developed. The design results show that the program is running smoothly, the result is correct with the friendly interface, it can provide a convenient tool to rapidly design of project for the belt drive system.
Experimental Study of Pressure Drop after the Circle Grids Fractal Orifice
Authors: Manshoor Bukhari , Zaman Izzuddin , Khalid Amir
Published: August 2013

Flow rate measurements are among the most important operations in modern industries dealing with increasingly expensive fluids such as petroleum, biodiesel and natural gas. The accuracy of flow meters depends mainly on their position in a pipe network and their operating conditions. Another important in designing piping system is a pressure drop across the flow measurement devices. Here, we investigate the pressure drop after the circle grids fractal orifices using a digital differential pressure manometer at different stations downstream a turbulent flow pipe then a direct comparison has been made with the pressure drop measured from regular orifices with the same flow area. Our results showed that the circle grid fractal orifices have a significant effect on pressure drop downstream the flow which is to be lower than that from ordinary orifices of the same flow area. This result could be important from point of view of losses consideration with the same flow control area. The experimental results using the circle grid fractal orifices show that these types of orifices can sense the pressure drop across them accurately with minimum losses than the regular ones.
A DEA Based Model for Ranking Air Freighters Operational Efficiency
Authors: lo Storto Corrado
Published: August 2013

This paper proposes a benchmarking model useful to rank and select aircraft used in the freight industry. The decision-making problem of aircraft ranking and selection is addressed by implementing an extension of Data Envelopment Analysis (DEA), i.e. the cross-efficiency calculation. DEA efficiency is a useful indicator to evaluate the value for money of an aircraft in the freight industry and its extension - the cross-efficiency measurement makes it possible to rank aircraft according to this value for money measurements. A sample of 22 air freighters is used to analyze the model validity. DEA scores show that 4 aircraft models only are evaluated as being full 100% efficient, and some old models (i.e., DC 9-10F) are as efficient as the recent aircraft models sold in the market (A300F and A330-200F).
Structural Modal Analysis of a New Twin-Rotor Piston Engine
Authors: Xie Qiang , Pan Cun Yun , Chen Hu , Zhang Zheng Zhou , Zhang Lei
Published: August 2013

With the finite analysis software ANSYS, the key parts and the whole structure of a new twin-rotor piston engine is analyzed, and then the structural modal parameters are obtained by using finite element method in the cases of free modality. Furthermore, the natural vibration characteristics of the twin-rotor piston engine are analyzed, as well as the influence of structural parameters on vibration transfer and radiation noise. The research is expected to lay a foundation for the vibration reduction design of the twin-rotor piston engine.
Flow Visualized Observation of a Symmetrical Airfoil with Attack Angle in Fluctuating Relative Flow Velocity
Authors: Yokoi Yoshifumi , Fukuta Hiromi
Published: August 2013

In this study, a visualization experiment was performed in order to confirm the flow pattern around airfoil with relative velocity fluctuation by in-line forced oscillating in the direction of flow. An airfoil NACA0012 with attack angle of 5 degrees produce the separation in the steady state was observed by the experiments using dye streak method at Reynolds number Re=3.6x103. The investigation of the attack angle which does not separate in such low Reynolds number was performed, and it was confirmed that the separation occurs to 3 degrees. And the airfoil with attack angle of 2 degrees which does not cause separation in steady state, was forced to oscillate with two kinds of relative velocity ratio (umax/U=0.4 and 0.8, here, umax and U denote maximum moving speed of airfoil and main flow velocity, respectively.). The flow separation on the surface of airfoil with attack angle which does not produce the separation in the steady state is occurred even if the maximum moving speed of airfoil umax is in the range which does not exceed main flow velocity U.
Ergonomic and General Ground Control Station Design for Unmanned Aerial Vehicles
Authors: Liu Ai Zhi , Li Bao An , Xi An Min
Published: August 2013

In the view of the existing design for Ground Control Station(GCS) of Unmanned Aerial Vehicles(UAV) lacking of generality and ergonomics, a kind of ergonomic and general GCS is designed; the architecture of GCS system, which is general open and distributed, is constructed based on Gigabit Ethernet; a standard and general hardware platform is designed; software follows Standard Interface of STANAG 4586; the Shelter and Flight Control Console(FCC) are designed based on Ergonomics; that is an exploration for the design of GCS.
Flow Measurement Wavelet Filtering for Ultrasonic Flow Meter
Authors: Yang Yu , Wen Wen , Zong Guang Hua , Ding Feng Lin , Li Yong
Published: August 2013

This paper introduces the wavelet filtering to the digital signal processing of ultrasonic flow meter. The noise sources in ultrasonic flow meter are analyzed, and they are divided into three groups: power input, integrated circuit, and other acoustic ways. Some of the noise is not white noise, so traditional noise reduction filter is not effective. Original signal from ultrasonic flow meter is sampled, and four wavelet filters (Haar wavlet, Daubechies wavelet, Symlets wavlet, and discrete Meyer wavelet) with three threshold methods (SURE threshold, Universal threshold, and Minimax threshold) on the signal is compared through experiment. The result shows Haar wavelet with Universal threshold has the best filtering ability for ultrasonic flow meter.
Strength Analysis of Yacht Hull Building by VIMP
Authors: Sun Feng Sheng , Huang Ya Nan , Pan Wei , Liu Yu Jun
Published: August 2013

This paper describes FRP boat hull for specific construction process using the vacuum infusion process, and between the different processing sample strength are compared, and then to get the optimal construction scheme, which can be the reference to the yacht building in the future.
Similar Constructive Method for Solving the Model of the Seepage in Multilayered Reservoir
Authors: Li Wei , Huang Rong Jun , Li Shun Chu , Gui Dong Dong
Published: August 2013

A well test model analysis that based on the three outer boundary conditions (infinite boundary, closed boundary, constant value out boundary) is established for multilayered reservoir; The solutions to the distribution of reservoir pressure and the bottom-hole pressure are obtained in the Laplace space by the use of the Laplace transform; Though the analysis of solution expressions, the solutions to the reservoir model under the condition of three outer boundaries are found to have the same expression and a new method is obtained to solve the boundary value problem of such models of reservoirsimilar constructive method. The similar structural equation of the solution to the reservoir model ,which is obtained by the similar constructive method, is not only convenient for well test engineer to program the corresponding software for well test analysis but also has an important meaning to the theoretical analysis of the seepage regularity of reservoir.
Power Losses of MOSFETs in DC/DC Converters Based on Single-Ended forward Topology and Resonant Reset Technology
Authors: Xu Guo Ying , Yu Hai Sheng , Zou Hua Chang , Cheng Ming , Yang Hao
Published: August 2013

This document explains and demonstrates the composing of power losses of MOSFETs in DC/DC converters which are based on Single-ended Forward topology and Resonant Reset technology and how to calculate the losses by equations. For the purpose of validating the correctness of these equations, two different MOSFETs are chosen and uesed in the same DC/DC converter. Furthermore, some practical method is presented in choosing the most suited MOSFETs for certain DC/DC converters.
Split-Current Magnetoresistor
Authors: Phetchakul Toempong , Taisettavatkul Prateep , Yamwong Wittawat , Poyai Amporn
Published: August 2013

The split-current magnetoresistor is proposed here. The structure likes the series magnetoresistor that one end split into two symmetrical terminals, so it is the magnetoresistor with three terminals. It uses the Hall effect current mode as magnetoresistor but the output is the differential current instead of resistance. It shows good linearity and can detect the magnetic field direction. The sensitivity in the differential current of width 100 μm and length 200 μm at 1 mA is 2.788x10-6 A/T constantly while the conventional one in the differential resistance is varied with magnetic field. It is made of silicon non magnetic material so it is compatible with the modern low-voltage current-mode integrated circuit.
Research for "Network Engineering" Professional Personnel Training Mode Based on 3+1 in the Era of the Internet of Things
Authors: Wang Jun , Shao Li Hu
Published: August 2013

The internet of things on policy highlands is faced with pressure of talent shortage, but the majority of colleges and universities are facing that professional setting is not prominent characteristic. In addition, the Internet of things technology application in the coal industry is different with in business networking. The specialties reform of "Network engineering" is proposed in this paper, and is accordingly pilot. Experiment results show that, combining the school advantage discipline, the specialties reform based on original "Network engineering" is successful. It can effectively meet the professionals needs Internet of things in the coal industry. At the same time, it improves learning interests and employment prospects of student.
The Framework Design of E-Box Multimedia System
Authors: Chen Xiao Meng , Feng Wei Chang
Published: August 2013

E-Box multimedia system is developed for the rich audio and video resource on the Internet and on its server side, it can automatically search and integration of network video and audio resources, and send to the client side for the user in real-time broadcast TV viewing, full use of remote control operation, Simply its a very easy to use multimedia system. This article introduces its infrastructure, main technical ideas and you can also see some details about server side and client side.
Study on the Man-Machine Hairdryer Shape Design
Authors: Liu Yuan
Published: August 2013

with the rapid development of the society, hairdryer, as one of the necessity in life, has been unable to meet the demand for high quality and fast pace of life, all because its modeling defects and a single feature. This article aims to elaborate the creative design and humanistic embodiment of this product, mainly from the following three aspects: the taste design of man-machine hairdryer shape, reasonable combination of features, and aesthetic unity of color and texture.
An Interactive Newsvendor Model Involving Market Risk and Product Quality Risk
Authors: Huang I Ping , Chyu Chiuh Cheng
Published: August 2013

This paper presents an interactive profit sharing mechanism for a newsvendor supply chain problem considering both market demand uncertainty and product quality risk. The supplier decides wholesale price, and based on this price, the retailer responds with a market price and an order quantity that optimizes his expected total profit. It is assumed that the retailer fully understands how the market price influences the mean of the market demand distribution. The supplier earns his profit from the order quantity, but will bear the cost of defective products delivered to customers. On the other hand, the retailer bears market risks such as overage cost and shortage cost. To reduce the quality risk, the supplier will employ a Bayesian double sampling inspection plan to minimize product quality cost. An illustrative example is presented to describe the proposed model. Sensitivity analyses of the model parameters are also included.
Reconstruction of the Growth History of a Large Synthesized Diamond Crystal by Synchrotron Topography
Authors: Yu Wan Li , Jia Xiao Peng , Yuan Qing Xi
Published: August 2013

The growth history of a large diamond crystal synthesized by HPHT temperature gradient method was reconstructed by the defects features in the crystal. The crystal defects were revealed using white synchrotron radiation topography. Dislocations originated from the surfaces of the seed and extended along the directions of <100> were observed within the crystal grown at the early stage. The crystal was then grown to the [00-direction at the middle growing stage and no dislocations were generated at this stage. A lot of dislocation bundles were generated at the last growth stage of the crystal and each bundle was composed of several straight extended dislocations originated from the same point and extended radially within a sector of about thirty degrees centigrade. The origins of the dislocation bundles were distributed near the surface of the crystal. Most of the dislocation bundles were generated near the (-100), (010) and (00-1) and extended to the [-10, [01 and [00-, approximately. The generation of the dislocation bundles was caused by the rapid descent of the temperature in the last growth stage of the diamond crystal.
Workshop Layout Design Based on Genetic Algorithm
Authors: Zhang Song Yan
Published: August 2013

Genetic algorithm is a kind of global stochastic research method that simulates biological evolution process to achieve optimal results. In this paper, we use genetic algorithm in the workshop layout design. The result shows that genetic algorithms can not only get excellent near optimal solutions, but also have high computing efficiency and practicability.
Italian Energy Portfolio Analysis: An Interactive Renewable Investments Tool
Authors: Cucchiella Federica , D’Adamo Idiano , Gastaldi Massimo
Published: August 2013

The portfolio analysis is a method for the strategic selection of energy sources able to drive the sustainable evolution of the renewable energy balance. In this paper the portfolio theory is applied in the Italian electricity market for different renewable energy sources (biomass, hydro, photovoltaic and wind) with the aim to select, by diversification, optimal portfolios that minimize investment risk. This analysis can be useful for energy planners to select future green scenarios based on the increasing use of renewable energy.
Robust and Efficient Software Design, Based on Application of Decision Support System BPsim.DSS
Authors: Aksyonov Konstantin , Bykov Eugene , Aksyonova Olga
Published: August 2013

The paper focuses on development and application of a software engineering system BPsim.SD, part of decision support suite BPsim.DSS, which greatly simplifies analysts work and their interaction with software developers working on different parts of complex projects. Paper gives examples of the system deployment in production environments, both for model validation (which was successful) and for software design from scratch, which resulted in benefits from decreased costs and avoided data losses.
Spot Welding Quality Prediction Model Based on Partial Least-Squares Regression
Authors: Zhao Hui , Wu Jian Jun , Du An , Ma Rui Na , Fan Yong Zhe
Published: August 2013

The relationship between spot welding process parameters and nugget diameter was selected and synthesized by partial least squares. The partial least squares regression model of spot welding quality was established. And the nugget diameter was predicted based on the model mentioned above. The results show that this model can be used to predict the spot welding quality.
Some Cryptographic Properties of H Boolean Functions
Authors: Huang Jing Lian , Wang Zhuo , Liu Ya Jing
Published: August 2013

Using the derivative of the Boolean function and the e-derivative defined by ourselves as research tools, we go deep into the internal structure of the Boolean function values. Cryptographic properties such as algebraic immunity, correlation immune and algebraic degree of H Boolean functions with Hamming weight of with diffusibility and the relationship between these properties are studied. Then we get the results of the mathematical expression of linear annihilators, the values of algebraic degree and correlation immune order, and so on.
Application of Self-Adaptive MGM (1, n) Model in Dam Deformation Prediction
Authors: Liu He Zhi , Wang Song Lin , Liu Jing Yang , Yang Guang
Published: August 2013

Considering the characteristics of randomness and uncertainty of dam system and the lack of safety monitoring data in some projects, a grey forecasting method based on self-adaptive MGM (1, n) was proposed in this paper to predict the dam deformation. Firstly, theory of the traditional MGM (1, n) model and the parameter estimation method were introduced. On the basis of this, add these forecasted values into the original data group and eliminate the oldest information, the self-adaptive MGM (1, n) model could be established. This paper employs this improved approach in the dam deformation of an arch dam. By predicting the dam deformation in next 5 days, the validity of such method was proved. Compared with GM (1, 1) model and conventional MGM (1, n) model, the experimental results indicate that the forecasting performance is significantly superior to that of the above mentioned two methods.
The Assessment of Stress Analysis for a Notebook's Hinge Stopper Using the FEM Method
Authors: Chiu Min Chie , Yeh Long Jyi , Chiu I Lang
Published: August 2013

Computer Aided Engineering (CAE) software is a vital analytical tool which is often adopted for product design. Engineers can obtain related design information for stress, strain, displacement, fatigue, and longevity of products via a CAE simulation. In order to improve product reliability, analysis of a products structure using CAE is compulsory. The purpose of this research is to implement CAE analysis on a laptops hinge. A 3-D model of the laptops hinge was first established by Pro/Engineer software and then transferred onto ANSYS/Workbench software. Moreover, all boundary conditions, connections, materials, and mesh property were set into an ANSYS program. Subsequently, the calculation of kinetic behavior for the hinge structure and maximum stress and stress allocation were performed by the ANSYS. In order to verify the correctness of the parameter settings on ANSYS/Workbench software, a products breaking test was conducted. A comparison between the experimental data and the theoretical data of the ANSYS was also carried out. Consequently, the deviation between the analyzed data and the real testing data is within 5%. Therefore, the analytical methods established above can provide a quick and efficient design for the structural strength of a hinge stopper.
Rapid Process Design Technology Research Based on 3D Model
Authors: Miao Li Qin , Zhang Da Shun , Jiang Ji Chun , Jiang He Ping , Wang Jing , He Yi
Published: August 2013

The rapid process design technology about box parts based on 3D model was researched in this paper, in order to analyze process feature, it has broken through key technology for obtaining 3D process knowledge from the process knowledge database. The process knowledge sharing and technique process optimization were realized. It shortens the preparation cycle of process of new product development.
Compensation Algorithmic Study about Standardization Data of Borehole Inclinometer
Authors: Xue Qin
Published: August 2013

Measurement and calculation of angle is an important link in borehole inclinometer work. Although the tilt sensor adopted from volume, dropping resistance , vibration resistance and other performance indicators are good embodiment currently, Measured using instrument performance, environmental factors and technical level of operator has certain influence on the angle measurement., According to the measured data to obtain regression model of angle value through on-the-spot test to calibrate measuring angle in this paper. The value has certain measurement error, measurement error is reduced by application of actual error compensation algorithm. Theory analysis and simulation calculation shows that obtaining mean maximum is 0.13452 after compensation by this method, the results of mean maximum is 4.72104 without compensation, it shows that this method is effective.
Di(1,10-phenanthroline)-Cobalt(II) Nitrate Iodate Dihydrate, Co(C12H8N2)2NO3I(H2O)2
Authors: Liu Hai Xing , Guo Huan Mei , Xiao Jing Zhong , Zhang Qing Hua , Yu Zhang Xue , Zeng Guang , Ye Kai Qi
Published: August 2013

A novel Co complex Co (C12H8N2)2NO3I(H2O)2has been synthesized from hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Co atom is coordinated with four N atoms from two 1,10-phenanthroline and two O atoms from NO3-, presenting a distorted octahedron geometry. The crystal structure is stabilized by intermolecular O-H...O and O-H...I hydrogen bonds interaction.
Synthesis of the Novel Compounds 2-Lactosylthio-3-Alkyl/Alkoxythieno[3,2-d]Pyrimidin-4(3H)-Ones
Authors: Dai Qiu Hong , Liao Quan Bin , Huang Nian Yu , Liu Ming Guo
Published: August 2013

The title compounds 2-lactosylthio-3-alkyl/alkoxythieno [3,2-pyrimidin-4(3H)-ones 5 were synthesized after the alcoholysis reaction of protected 2-lactosylthio-3-alkyl/alkoxythieno [3,2-pyrimidin-4(3H)-ones 4 with the catalyst of ammonia water. The latters were synthesized from the materials ethyl 3-aminothiophene-2-carboxylate 1 and alkyl/arylisothiocyanates through the thiourea intermediaters 2 and heterocyclic compounds 3. Structural characterization of the target compounds were researched and their biological activity evaluation were underway in our laboratories.
A Computational Model for Predicting ADAM17 Substrate Specificity
Authors: Sen Liu , Pei Dong , Liu Song , Ma Xiao Hong
Published: August 2013

Tumor necrosis factor-alpha converting enzyme (TACE) is a membrane-anchored protein that releases the soluble forms of many proteins by a process called ectodomain shedding. TACE has been considered as a potential target in a lot of diseases in autoimmune diseases and in cancers recently. In spite a lot of protein substrates have been found these years for TACE, the substrate selection of TACE is still not known. In this paper, a TACE-peptide complex was constructed, and used for the prediction of substrate sequences and cleavage sites. The result could be useful for understanding the substrate specificity of TACE, and designing better TACE inhibitors in future.
Research on the Influencing Factors of Friction Coefficient between PTFE and Stainless-Steel of Sliding Isolation Bearings
Authors: Zeng Cong , Tao Zhong , Bai Jun Feng
Published: August 2013

The main factors that influent the friction coefficient between PTFE and stainless-steel of sliding isolation bearings (SIB) are introduced in this paper. The positive pressure, sliding velocity, air temperature and lubricant all played important roles to the friction coefficient of SIB. By means of experimental investigation, the friction coefficient of SIB is indicated, and according to the test data, estimation formula of friction coefficient is regressed. Furthermore, relationship between friction coefficient, positive pressure and the use of lubricant are preliminarily validated.
Qualitative Evaluation of Pilling
Authors: Techniková Lenka , Tunák Maroš , Janáček Jiří
Published: August 2013

This paper presents 3D reconstruction of fabric surface with the pills, detection of the pills and qualitative evaluation of pilling with the help of spatial data analysis. 3D reconstruction of fabric surface is performed with the help of gradient fields method. The surface pills are extracted from 3D image by techniques of image analysis. Consequently, the tools of spatial data analysis as K function, density and test are used for experiment of qualitative evaluation of pills distribution in the space.
The Methods Research of Advance Detection in Tunnel Geological Disasters under Complicated Geological Condition
Authors: Chen Yan , Liu Bao Xian , Shu Zhi Le , Huang Jia Zhen
Published: August 2013

With the infrastructure construction of China, more and more tunnel projects are constructed. How to finish a tunnel project efficiently and effectively has become a challenge. The advance detection in tunnel geological disasters has a very important position. This paper mainly discussed the basic principle of advance detection and compared different methods according to the advantages and disadvantages. The author also put forward some suggestions on synthesis methods.
Study for Absorption Heavy Metals by Pickled Diatomite
Authors: Luo Wen Lian
Published: August 2013

The removal of Cu2+ ions from aqueous solution was studied using pickled diatomite samples. The linear Langmuir and Freundlich adsorption equations were applied to describe the equilibrium isotherms. The pseudo-first-order and pseudo-second-order models were used to determine the kinetic data. The experimental data were well fitted by the pseudo-second-order kinetic model.
Synthesis and Structure of Titania Nanotubes For Hydrogen Generation
Authors: Wantawee Sangworn , Krongkitsiri Pacharee , Saipin Tippawan , Samran Buagun , Tipparach Udom
Published: August 2013

Titania nanotubes (TiO2NTs) working electrodes for hydrogen production by photoelectrocatalytic water splitting were synthesized by means of anodization method. The electrolytes were the mixtures of oxalic acid (H2C2O4), ammonium fluoride (NH4F), and sodium sulphate (VI) (Na2SO4) with different pHs. A constant dc power supply at 20 V was used as anodic voltage. The samples were annealed at 450 °C for 2 hrs. Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) were used to characterized TiO2NTs microstructure. TiO2NTs with diameter of 100 nm were obtained when pH 3 electrolyte consisting of 0.08 M oxalic acid, 0.5 wt% NH4F, and 1.0 wt% Na2SO4was used. Without external applied potential, the maximum photocurrent density was 2.8 mA/cm2under illumination of 100 mW/cm2. Hydrogen was generated at an overall photoconversion efficiency of 3.4 %.
Study on the Superabsorbent Hydrogels Consisting of Crosslinked Acrylic Acid and Nanosized SiO2 Sphere
Authors: Chen Yi , Peng Yue , Liu Wen Yong , Zeng Guang Sheng , Li Xiang Gang , Yan Xue Hui
Published: August 2013

A superabsorbent hydrogels were synthesized by an optimized rapid solution polymerization of concertrated partically neutralized acrylic acid in the presence of an organic crosslinker agent under normal atmospheric conditions, nanosized SiO2 spheres were added into gels to strengthen the gels and decrease the cost. The results showed that, comparing to the inorganic-free hydrogels, the addition of SiO2 spheres cause a sligtly decreased swelling ratio with a faster swelling rate. Meantime, the strength of hydrogels increases 10-20%.
Performance Analysis on Solar Assisted CO2 Vapor Compression Heat Pump Cycle with an Ejector
Authors: Zhao Jia Hua , Ning Jing Hong
Published: August 2013

The thermodynamic performances of solar assisted CO2 vapor compression heat pump cycles with an ejector are analyzed and compared with that of conventional CO2 heat pump cycle (named as A cycle). Under the given working conditions, the COP of solar assisted CO2 heat pump cycle with an ejector after compressor cycle (named as C cycle) is much higher than that of CO2 heat pump cycle with an ejector before compressor cycle (named as B cycle) and that of the A cycle because of the lower compressor power of the C cycle. The compressor volume displacement of the C cycle demanded for providing the same heat capacity of gas-cooler is the lowest among the three cycles. So the compressor size of the C cycle is very small and the cost of the C cycle is very less. In the area having rich solar energy resource, it is significant to employ the C cycle for providing space heating by optimizing design ejector and selecting compressor, thus, the performances for this C cycle can be improved greatly. In the area not having rich solar energy resource, the B cycle can be used for providing space heating; the performances can also be improved accordingly.
Visual City's Colour Design-Taking the Studying of Wuhan City Colour as an Example
Authors: Zhang Shu , Li Jun
Published: August 2013

With the rapid development of Chinas modernization construction, the planning of the citys colour landscape plays an important role in keeping urban view feature, enriching urban cultural connotation and enhancing urban quality. This paper is based on the visual, the colour and urban environment creative view. It is necessary to design urban colour plan within detailed plan because of the complexity of the colour itself. Its also essential to develop the method for urban colour landscape is an important part of city aesthetics to promote the level of urban construction. To sum up, this paper takes Wuhan city colour as an example. The building colour of Wuhan city is divided into central zone, transition zone, diffusion zone, characteristic area, form area, i.e. five regional colour partitions. It establishes the main tone of the urban design and builds 50 city building colour control area. The paper broaches control rules for the citys colour design and administration advice for the citys colour design. This study provides a systematic colour planning method which can be put into practice.
Investigation of Plasma Electrolytic Oxidation of Magnesium Alloy under Pulse Power Supply
Authors: Song Xiang Hua , Lu Jian Hong , Yin Xij Jang , Jiang Jian Ping , Lai Kuan Annie Tan
Published: August 2013

AZ31B magnesium alloys were treated by plasmaelectrolytic oxidation (PEO) technique using an environmental friendly electrolyte solution under single-polar pulse power mode to improve the coating performance. The effect of applied voltage on the coating qualities was studied. The coating surface and the cross-section morphology were characterized by scanning electron microscopy (SEM), and the corrosion resistance was tested by potentiodynamic polarization.The coating surface is porous, and the pore size in the coating layer grew with applied voltage increased. The potentiodynamic polarization tests showed that PEO coatings exhibit significantly improved corrosion resistance as compared with uncoated magnesium substrate AZ31B, decreasing the corrosion current density by three orders of magnitude. The anti-corrosion performance of the PEO coating was improved with the operation voltage increasing from 240 V to 280 V, and at voltage higher than 280 V, there is no further improvement on the coating electrochemical property. The optimal operation voltage was 280 V, which exhibits the most high corrosion resistance.
FT-IR Analysis of Molecular Structure Evolvement of Poly(Ether urethanes) in Ozone Atmosphere
Authors: Wang Hai Yan , Liu Yu Wen , Tian Ji Feng , Sun Bin , Huang Shi Jie
Published: August 2013

The failure behavior of Poly (ether urethanes) in ozone atmosphere was investigated by FTIR, UV-Vis spectra and SEM analysis. It is found that some oxygen-containing groups such as the hydroxyl group and the carbonyl group increase first and then slightly decrease with the ozone oxidation time and the carbohydryl and ether bonds decrease slowly. After oxidation by ozone, the polyurethane molecule chains break on C-O in ether and urethane groups instead of chain crosslinking. In addition, ozone oxidization increases the color difference and lowers the UV light transparence of polyurethane.
An Empirical Analysis of Risks, Involved in Marketing of Civil Engineering Products
Authors: Fiaz Muhammad , Younas Shoukat , Ullah Malik Zaka , Yang Nai Ding
Published: August 2013

This research paper is an effort to highlight prominent key risks which are involved in marketing of civil engineering products. Construction moguls hire the services of third party to market and sale the engineering products but they are not fully experts in construction affairs. A framework of marketing risks has been devised to help the third party personnel during sales of completed or under process civil projects. These risks have been evaluated by the sales managers and site engineers through survey process. Last three decades have witnessed the Chinese economy growing at very rapid rate especially for massive construction developments. Rapid developments in building designs, customers ever changing demands, state policies and geographical locations have made the marketing strategies risk prone in China. Marketing concept was introduced during 60s to get the cmpettive advanteges by business moguls. His concepts caused a paradigm shift in business concept to suggests that business should satisfy their customers needs which are the heart of business. Customers loyalty and satisfaction were put at first in priority. The results indicate that the key risks as: economic slowdown, price inflation, liquidity risks, capital risks, competition, interest rates, land acquisitions, payment risks, investors changes, inaccurate cost estimation, design variations, administrative issues, poor competency of third party, non-familiarity with construction affairs, poor safety measures, political stability, law and order situation and problems for approval and permission process cause to push construction entrepreneurs towards complex scenarios. These results have been extracted on the basis of research survey. 313 paper base and online questionnaires were sent to solicit responses from sales professionals and site engineers during survey. Overall, 113 responses were collected during research survey. Responses were scaled on 5-likert scale. Data has been analyzed using SPSS software.
Design and Construction of Plot 0 Wide-Span Cantilever Beam Support
Authors: Li Zhen , He Ning Hui
Published: August 2013

This paper represents the introduction to the selection, construction scheme and design of No. 0 support material for the main beam of Jianyi Bridge in Fengcheng City, the computational check on the bearing capacity of the support structure through MIDAS/Civil V2006 Modeling, then the bearing capacity of all the members can meet the requirements.
Brief Introduction of Structural Design for Lijiang Sports Center Stadium
Authors: Xu Wei Qiang , Song Jing Xu , Pan Wen
Published: August 2013

This paper focuses on the structural design for Lijiang Sports Center Stadium, reasonable structure partition of the stadium and the combined analysis of the lower part of reinforced concrete structure with the upper part of steel marguise. Besides, foundation design under larger eccentric loads and horizontal shear forces as well as the selection of pile foundation design are also investigated.
Preparation of ZnFe2O4 Nanometer Powders by Sol-Gel Method and Research about its Electrochemical Performance
Authors: Wu Yin Lin , Wang Qing Hui , Wang Ling , Zhao Hai Yan
Published: August 2013

The ZnFe2O4 nanometer powders were prepared by EDTA sol-gel method. The samples were characterized by DTA, FT-IR, XRD techniques. The preparation process, the best heat-treatment temperature and the electrochemical performance had been studied. The results show that the spherical nanometer powders can be obtained and the best heat-treatment temperature is 900°C. The particle size is about 10nm and Ea is 0.88 eV.
Experimental Study on the Influence of the Self-Healing Microcapsules on the Friction Noise Performance of Composite Gears Based on Properties of Mechanical Materials
Authors: Zhang Li , Ma Yan Miao
Published: August 2013

Based on the properties of mechanical materials, the friction noise experiment is conducted on the E-glass-reinforced nylon 6 composite gears in this paper. In the test, by combining the friction testing machine with the noise processing software DASP, the vibration noise signals of the composite gear samples with and without self-healing microcapsules at different friction temperatures were picked. Then the influence the self-healing microcapsules have on the friction noise performance of the composite gear material was analyzed by comparing the obtained signals. The results show that the noise of composite gears with self-healing microcapsules is lower than that of gears without self-healing microcapsules at both different temperatures and different frequencies, which means that the self-healing microcapsules reduce the friction noise of the composite gears.
The Block Spring Model for Seepage Slope Stability Analysis
Authors: Ma Jing , Chen Wen Sheng , Li Zhen
Published: August 2013

The BSM has been used in slope stability analysis, this paper gives a more reasonable model and develops a program by VC++ to study the slope stability of groundwater. A reasonable result is obtained with the proposed model.
Study on Significant Engineering Construction Projects with Building Materials Based on Social Stability Risk Assessment
Authors: Shi Qian , Liu Yang
Published: August 2013

With the rapid development of economic in China, a serious of important construction projects is put into practice. The building materials of the significant engineering construction projects get more attention, and strengthen supervision for building materials is an important element of social stability risk. Building an evaluation of social stability risk on engineering construction projects with building materials can find the hidden dangers which may affect social stability timely, so that the builders can take effective measures earlier to reduce and resolve social stability risk. This is meaningful for the smooth implementation of construction projects and keeping of social stability.
Concrete Reinforced by Glass-Fibre Mesh and Their Efficient Usage in Plated Façade Components Stiffened by Rib
Authors: Karmazínová Marcela
Published: August 2013

The paper deals with the problems of the actual behaviour of glass-fibre-concrete (GFC) facade components stiffened by the rib. The results of loading tests of GFC plated panels subjected to the load simulating the effects of the wind pressuring or sucking are especially presented in the paper. Loading tests were oriented to the investigation of the actual behaviour of GFC component in the loading progress up to the failure, in particular with the accent to monitoring the strain mechanism in the loading process and subsequent the failure mechanism at reaching the ultimate load-bearing capacity. The particular test results in the form of the objective ultimate capacities obtained as the maximal loads at the failure give the important information on the properties of the plated facade panel composed of glass-fibre-concrete produced by the “splashing” method, namely in the relation to the physical-mechanical properties of the material and to the geometrical characteristics of the panel cross-section.