bluuebunny/crossref_metadata_2025 huggingface dataset:
The Application of Adaptive Kalman Filter in Traffic Flow Forecasting
Authors: Gao Jun Wei , Leng Zi Wen , Zhang Bin , Liu Xin , Cai Guo Qiang
Published: April 2013

The urban traffic usually has the characteristics of time-variation and nonlinearity, real-time and accurate traffic flow forecasting has become an important component of the Intelligent Transportation System (ITS). The paper gives a brief introduction of the basic theory of Kalman filter, and establishes the traffic flow forecasting model on the basis of the adaptive Kalman filter, while the traditional Kalman filtering model has the shortcomings of lower forecasting accuracy and easily running into filtering divergence. The Sage&Husa adaptive filtering algorithm will appropriately estimate and correct the unknown or uncertain noise covariance, so as to improve the dynamic characteristics of the model. The simulation results demonstrate that the adaptive Kalman filtering forecasting model has stronger tracking capability and higher forecasting precision, which is applicable to the traffic flow forecasting.
Modeling and Implementation of Inter-Campuses Equipment Optimized Management Based on WebGIS
Authors: Ma Wei Feng
Published: April 2013

With the rapid expansion of the campus scale and the increasing of the geographically dispersed campus, how to adopt new theory, new method and new technology to realize the equipment optimized assignment and the information management is a new research challenge. It is the key to safeguard the national fund to use reasonably, and to speed up the development of education healthily. Through analyzing the domestic and foreign related research works, the paper proposed that it can take use of the spatial data expression and analysis with Geographic Information System (GIS) to realize the large-scale and inter-campuses equipment optimized assignment and information management. It discussed the mathematics model and the system architecture. Moreover, the paper described the key implementation technology in great detail such as spatial data mapping with MapInfo professional 9 and the development of WebGIS functions with MapXtreme. The results show that the solution is feasible and effective.
Research and Performance Analysis on Parallel Computing of Remote Sensing Image Based on MPICH
Authors: Li Jun , Ma Wei Feng
Published: April 2013

The traditional centralized single mode becomes a “bottleneck” of remote sensing image processing which cannot meet the needs of future remote sensing image processing development. Fortunately, the distributed parallel computing has provided a turning point to the quick calculation of remote sensing image. This paper presents the cluster computing environment based on the MPI, and advances a project of a parallelized design to the gray level co-occurrence matrix algorithm. Moreover, the experimental data, which is due to the parallelized algorithm running in the cluster, is recorded and analyzed in several respects such as different nodes, time, speedup, efficiency and so on. The analyzed result shows that parallel computing cluster based on MPICH can efficiently improve the speed of remote sensing image processing in the case of more complex algorithms. However, when the number of node increases, the consuming time decreases, and the efficiency will decrease at the same time. So, it is rather important to keep the balance between performance and efficiency. The nodes can not be continuously added into computing, when the consuming time can be accepted.
Simulation of Bungee Jumping System and Open Experiment Teaching Using Simulink
Authors: Yu Jun Wei , Wang Gui Cai , Jin Xiao Bo , Wang Feng
Published: April 2013

Nowadays bungee jumping is a popular extreme sport. Bungee jumping can be simulated with a continuous Simulink model. Exact measurements and calculations can be done to keep the jumper from striking the ground and to avoid other accidents. The Simulink model of bungee jumping system is built and its safety is analyzed. In this paper, an open experiment platform which has flexible selection of time, contents and evaluation methods is introduced to improve students’ ability of practice and innovation.
The Influence on Movement Comfort of Fabrics through Functional Finishing of Natural Dyes
Authors: Yi Ting Juan , Wang Wen Li , Chen Guo Hua , Zhou Yu Jun
Published: April 2013

This research work involves the dyeing of silk fabrics with cochineal inset, Safflower yellow, gardenia blue, three kinds of natural dyes. Then, UV protection performance was analyzed. The results show that the fashion color that turquosice has been acquired through changing the proportion of each natural dyestuff in combination dyeing, simultaneously there will be a certain influence on the movement comfort performance.
Effects of Sufentanil Preconditioning on Myocardial Infarction Areas and the Myocardial Enzyme in Myocardial Ischemia- Reperfusion Injury in Rats In Vivo
Authors: Gao Ming , Zhao Guo Qing , Wang Jia , Gao Da Peng
Published: April 2013

Objective.To investigate the effects of sufentanil preconditioning on Myocardial ischemia reperfusion injury in rats in vivo.Methods. To randomly divide 50 male SD rats equally into 5 groups, including ischemia-reperfusion group( Group I/R ), ischemic preconditioning group(Group IPC), high-dose sufentanil preconditioning group(Group HS, 6.0µg/kg), medium-dose sufentanil preconditioning group(Group MS,2.0µg/kg) and low-dose sufentanil preconditioning group(Group LS, 0.60µg/kg).The left anterior descending coronary arterys(LAD) of rats in five groups are ligated for 30 minutes and are re-perfused for 90 minutes. To measure the myocardial infarction size (IS/AAR%) with double-staining with Even's blue and triphenyltetrazolium chloride, and to calculate the concentration of LK, LK-MB and LDH. Result. Comparing with Group 1/R , the myocardial infarction size(IS/AAR%) in Group IPC, HS, MS and LS all reduced at different levels. Among the Group HS, MS and LS, the infarction size in Group HS reduced most significantly. Comparing with Group 1/R, the concentration of the serum myocardial enzymes in the other four groups all reduced at different levels. Conclusion. Sufentanil preconditioning can reduce myocardial infarct size, decrease the concentration of the serum myocardial enzymes. Therefore, sufentanil preconditioning has protective effects on myocardial ischemia-reperfusion injury in rats in vivo, and the effects are dose-dependent. Suffentanil is a potent kind of opioid analgesics, which is widely used in clinical anesthesia. However, further studies are needed on effects of sufentanil preconditioning on myocardial ischemia reperfusion injury. In order to protect the Myocardial ischemia patients and provide the foundations for application of sufentanil in peri-operative period, the authors investigate the effects of sufentanil preconditioning on myocardial ischemia reperfusion injury through comparison and analysis of the myocardial infarction size(IS), the concentration of the serum myocardial enzymes in the ischemia-reperfusion group(Group IPC), the ischemic preconditioning group(Group IPC) and different-dose sufentanil preconditioning group(Group HS, MS LS).
Knowledge Management and Semantic Technology in the Health Care Revolution: Health 3.0 Model
Authors: Chen Te Fu , Ko Chieh Heng , Cheng Fei Chun
Published: April 2013

Currently, the exploration, improvement, and application of knowledge management and semantic technologies to health care are in a revolution from Health 2.0 to Health 3.0. However, what accurately are knowledge management and semantic technologies and how can they improve a healthcare system? The study aims to review what constitute a Health 3.0 system, and identify key factors in the health care system. First, the study analyzes semantic web, definition of Health 2.0 and Health 3.0, new models for linked data: (1) semantic web and linked data graphs (2) semantic web and healthcare information challenges, OWL and linked knowledge, from linked data to linked knowledge, consistent knowledge representation, and Health 3.0 system. Secondly, the research analyzes two case studies of Health 3.0, and summarizes six key factors that constitute a Health 3.0 system. Finally, the study recommends the application of knowledge management and semantic technologies to Health 3.0 health care model requires the cooperation among emergency care, insurance companies, hospitals, pharmacies, government, specialists, academic researchers, and customer (patients).
Lightweight Research of Automobile Dash Panel Based on Sound-Structure Sensitivity
Authors: Zhang Lei , Hao Zhi Yong
Published: April 2013

In the research of the automobile front dash, the key of design is that acoustic need should be satisfied while losing the weight. In this paper, a structure-sound field coupling model of car body space is built. To fulfill the request, the dash panel is divided into several parts, and the sensitivity of thickness of each parts to the sound at the position of driver’s and co-pilot’s ears is calculated. Based on the sensitivity, the driver’s and the co-pilot’s parotic sound pressure is optimized while reducing the weight of front dash. The result proves that lightweight design is successful, which gives the reference to the design of the car body panels.
Co-Sorption Characteristics of Zn(II) and As(V) on Mixed Fe/Al-PILCs
Authors: Wu Su Yuan , Zheng Hong , Weidler Peter G. , Cai Peng
Published: April 2013

Co-sorption characteristics of Zn(II) and As(V) on the mixed Fe/Al-PILCs was investigated in a batch system at room temperature. The effects of relevant parameters, such as pH value of solution, adsorbent dosage, initial Zn(II) and As(V) concentrations and contact time were examined, respectively. The results show that co-sorption capacities and co-sorption rates of Zn(II) and As(V) by Fe/Al-PILC are higher and faster than those of single Zn(II) or single As(V) by Fe/Al-PILC. Co-sorption isotherm data of Zn(II) and As(V) by Fe-Al-PILC were fitted well to Langmuir isotherm and the maximum sorption capacities of Zn(II) and As(V) on mixed Fe-Al-PILCs (Q0) are 16.98 mg/g and 16.29 mg/g, respectively, which are higher than those in single system. n>1 from Freundlich isotherm indicate that the sorption of Zn(II) and As(V) by Fe-Al-PILC is favorable. E values from D-R model indicate that the type of sorption of Zn(II) and As(V) by Fe-Al-PILC is physical. The results indicate that there is significant potential for Fe/Al-PILCs as an adsorbent material for Zn(II) and As(V) removal from aqueous solutions.
The Development and Application of Smart Material Pumps
Authors: Zhao Ya Peng , Chen Ding Fang , Lu Quan Guo
Published: April 2013

This paper reviews the characteristics of smart materials, such as Piezoelectrics (PZT), shape memory alloys (SMA) and mganetostrictive materials (Terfenol-D). Since the properties of these smart materials vary greatly in terms of free strain and actuation stress, there is a need to identify the optimum smart materials for a particular application. From the review and comparison of different types of pumps (based on PZT, SMA and Terfenol-D), we recognize that these pumps have their unique advantages in specific application fields.
Corrosion Inhibition Effect of PASP and Sulfuric Acid High Cerium on Copper in Citric Acid
Authors: He Rui , Liu Zhen Fa , Gu Ning
Published: April 2013

Corrosion inhibition performances of polyaspartic acid(PASP) and Sulfuric acid high cerium to copper in Citric Acid solution was studied using electrochemical method. The results showed that PASP and Sulfuric acid high cerium mainifested very good synergy effect. When the total concentration was 0.1g/L, the inhibition efficiency reach 80.8% on the basis of 1:1.
The Levy Solution of Functionally Graded Materials Elastic Thin Plates
Authors: Zheng Feng , Wang Ming Lu
Published: April 2013

The governing equation of elastic FGM thin plates was obtained by degenerating the governing equation of viscoelastic FGM thin plates. A Levy solution of a simply supported FGM rectangular plate was gotten. Based on the Levy solution, the influence of considering and ignoring mid-plane stain, due to the inhomogeneous property of the functionally graded materials, on the static responses of the functionally graded materials thin plate is investigated.
Adsorption of Calcium Lignosulphonate Water Reducer on Alkali-Activated Slag Cement Pastes
Authors: Yang Chang Hui , Pan Qun , Zhou Huan
Published: April 2013

This paper shows how calcium lignosulphonate（CSL）water reducer affects the adsorption and rheological properties of alkali-activated slag cement (AASC) pastes activated by NaOH. It was concluded that the adsorption of water reducer on AASC pastes depended directly on the dosage of the water reducer and the retarder. Slag particles grounded with the retarder YP-3 adsorbed one and a half times of water reducer CSL as much as pure slag particles at 1% mass of the slag, and the absolute value increment of the zeta potential of the AASC suspension containing the retarder YP-3 is 14.00mV, compared with 9.25mV in the system without YP-3. Besides, the AASC pastes activated by NaOH containing the retarder YP-3 show better rheological properties and lower fluidity loss over time.
Dynamic Response Analysis of the Reinforced Concrete Column under the Effect of Explosive Impact Load
Authors: Chen Yu Feng , Yi Guang Xiang
Published: April 2013

This paper does the data simulation analysis by using the large-scale finite element nonlinear ANSYS/LS-DYNA software. It chooses the MAT111(MAT-JOHNSON-HOLMQUIST -CONCRETE）concrete materials and the MAT3 (MAT-PLASTIC-KINEMATIC) reinforcement material model in ANSYS/LS-DYNA finite element software, builds the separating RC column finite element model, dynamically simulates the hurting process of RC column under the effect of explosive impact load, and mainly does research into the damage degree of RC column under different effects of explosive load of different peak pressures.
Damping and Forced Vibration Analyses of a Piezoelectric/Elastic/Viscoelastic/Elastic/Piezoelectric Structures
Authors: Abdoun F. , Azrar L. , Daya E.M.
Published: April 2013

A mathematical model for the forced vibration of sandwich structures with a viscoelastic and piezoelectric layers is presented. The active-passive damping is realized by adding piezoelectric sensor and actuator layers to a sandwich viscoelastic structure. The mathematical formulation is developed in a general form in order to take into account for various viscoelastic models in the frequency domain. Frequency dependent Young modulus based on various Maxwells model is used for viscoelastic materials modelling. A numerical method combining the finite element and perturbation methods called asymptotic numerical method is developed for the displacement and frequency dependent problem. Resonance curves for sandwich structures are obtained for various frequency ranges, excitation amplitudes and viscoelastic models. Only some matrix inversions and a few iterations are needed for large frequency ranges.
Process Enhancement for Single Point Incremental Forming through a Remeshing Strategy
Authors: Giraud-Moreau Laurence , Zhang Jie , Cherouat Abel , Borouchaki Houman
Published: April 2013

Simulations of Single Point Incremental Forming generally require a very high computation time because the tool path is long and small elements are required everywhere on the sheet. In this paper, a remeshing method based on refinement and coarsening strategies is used with abaqus/explicit to reduce the computational time. The simulation of a semi-spherical cup with a fine mesh is considered as a reference simulation. The remeshing method allows reducing the number of elements and therefore the CPU time during the simulations. A good prediction is observed with the remeshing method.
Microstructural and Calorimetric Analysis of ZK60 Alloy Processed by ECAP
Authors: Dumitru Florina Diana , Ghiban Brandusa , Cabrera Jose María , Higuera-Cobos Oscar Fabián , Gurau Gheorghe , Ghiban Nicolae
Published: April 2013

In the last years many research efforts have been made in order to extend the application of wrought magnesium to structural components. One of the methods to improve the mechanical properties of the processed materials is through severe plastic deformation (SPD). ZK60 magnesium alloy samples were subjected to 6 passes of equal-channel angular pressing (ECAP) decreasing the temperature after the fourth pass, following an alternative route A. The structural characterization was realized by microstructural evolution using Oriented Image Microscopy (OIM) and XRD analysis. Differential Scanning Calorimetry (DSC) was used to estimate the stored energy and the recrystallization temperature after each ECAP pass.
Effect of Mesh Size and Mode Truncation on Reconstruction of Force Characteristics for Non Punctual Impacts on Composite Elastic Beams
Authors: El-Bakari Abdelali , Abdellatif Khamlichi , Dkiouak Rachid
Published: April 2013

dentifying characteristics of a force generated by non punctual impact is performed to better monitor the health of the impacted structure. This can be achieved through using an implemented structural model. For composite beams, the model can be constructed by means of the finite element method. In this work, the impact is assumed to be a uniform distributed pressure and the impact location is known. Reconstructing the force signal is performed by using regularized deconvolution techniques of the Toeplitz like equation giving the answer in terms of strains as function of the input force. Here, the generalized singular value decomposition based method is used in conjunction with truncation filtering. Quality of the reconstructed force is discussed as function of the mesh size and the mode truncation order.
Thermomechanical Fatigue Characterization of Three Dimensional Compact Tension Specimens Made from Steel
Authors: Achegaf Zineb , Abdellatif Khamlichi , Cabrera Francisco Mata
Published: April 2013

When coupling with temperature is incorporated, the problem of fatigue is formulated within the general framework of thermomechanical fatigue. Considering the special case of steel structures, in addition to variations of material and fatigue parameters with temperature, fatigue damage depends on the phasing existing between the concomitant strain and temperature cycles. In this work, the extended finite element method is used to simulate crack growth under thermomechanical fatigue coupling. Assuming large cycle duration for which temperature variations can be considered to be uniform, this approach is applied in the context of linear elastic fracture mechanics for the particular case of the three dimensional Compact-Tension specimen. The objective is to attempt understanding more closely crack growth mechanism under thermomechanical loading. Characterization of fatigue was assessed as function of phasing and strain restraint.
Free Vibration Analysis of FGM Plates under Initial Thermal Stresses
Authors: Mahi A. , Adda-Bedia E.A. , Benkhedda A.
Published: April 2013

Functionally graded materials (FGMs) are a new kind of composite materials which have a smooth variation of material properties along one or more directions. At each interface, the material is chosen according to specific applications and environment loadings. This paper presents some solutions to study the free vibration of FGM plates made of ceramic and metal. The formulation used is based on Reddys higher order shear deformation plate theory. Material properties are taken to be temperature-dependent, and vary continuously through the thickness direction according to a power law distribution (P-FGM). The plate is assumed to be initially stressed by temperature rise through the thickness. The energy functional of the system is obtained by using energy principles. Free vibration frequencies are then obtained by using a set of characteristic orthogonal polynomials and by applying Ritz method.
Reliability Analysis of Vibro-Acoustic Problem
Authors: Mansouri M. , Radi Bouchaib , El Hami A.
Published: April 2013

The comprehension of the interactions between a fluid and an elastic solid has a capital importance in several industrial applications. When a structure vibrates in the presence of a fluid, there is interaction between the natural waves of each media: the fluid flow generates a structural deformation and/or the movement of a solid causes the displacement of the fluid. These applications require an effective coupling. In addition, the dynamic analysis of the industrial systems is often expensive from the numerical point of view. For the coupling fluid-structure finite elements models, the importance of the size reduction becomes obvious because the fluid's freedom degrees will be added to those of the structure. A method of condensation will be used to reduce the matrixes size. One of the principal hypothesis in the use of component mode synthesis method is that the model is deterministic; it is to say that parameters used in the model have a defined and fixed values. Furthermore, the knowledge of variation response of a structure involving uncertain materials, geometrical parameters, boundary conditions, tolerances of manufactures and loading conditions is essential in global process of conception. In order to do that, the modal condensation method is extended to reliability analysis for the coupled fluid-structure finite elements models. A numerical vibratory study is leaded on a plate in the air and in immersion in water taking into account the acoustic aspect. The results of the reliability analysis tend to show the effectiveness of the proposed approach based on the condensation techniques.
Studies on the Bioceramic Coating on Titamium Substrate Including Silicon and Calcium by Micro-Arc Oxidation and Osteoblast’s Adhesion and Proliferation on the Coating
Authors: Li De Chao , Liu Xin , Han Lei , Li Jin Long , Cheng Su
Published: April 2013

This study used micro-arc oxidation technology for pure titanium alloy surface modification, which 400μm titanium beads were sintered into porous titanium in vacuum conditions, and produced silicon and calcium coatings. Scanning electron microscope(SEM), X-ray diffraction (XRD) and Energy dispersion spectrometer(EDS) were employed to investigate the surface morphology and phase composition of the coatings. The results are listed as follows: the main component of porous titanium MAO coating is anatase TiO2,and the coating introduced silicon and calcium element successfully. The proliferation ability of osteoblasts on the oxidized and unoxidized surface was determined by CCK-8 method, The results indicated that both the proliferation and adhesion ability of osteoblast on the oxidized surface were better than the unoxidized surface.
PCL and PCL/PLA Scaffolds for Bone Tissue Regeneration
Authors: Patrício Tatiana , Gloria Antonio , Bártolo Paulo J.
Published: April 2013

This paper investigates the use of PCL and PCL/PLA scaffolds, produced using a novel additive biomanufacturing system called BioCell Printing, for bone tissue engineering applications. Results show that the BioCell Printing system produces scaffolds with regular and reproducible architecture, presenting no toxicity and enhancing cell attachment and proliferation. It was also possible to observe that the addition of PLA to PCL scaffolds strongly improves the biomechanical performance of the constructs.
Application and Research on Luminescent Coating in Interior Design
Authors: Li Hong Cheng , Hu Wei Ping , Wang Yan Lei
Published: April 2013

As a new-type material, luminescent coating has received increasingly extensive application in modern life. The varieties of luminescent coatings gradually increase with the progress of science and technology, of which each kind of them shows its own unique property. This thesis researched on the different properties of various luminescent coatings so as to make them into rational use on the interior interface, thus achieving the more appropriate and safer use in interior design for the sake of beautification space, economizing and environmental protection.
Study on Synthesis of Cyclotriphosphazene Containing Aminopropylsilicone Functional Group as Flame Retardant
Authors: He Lan Lan , Zhang Yi , Qin Zhao Lu , Lan Yan Hua , Li Ding Hua , Yang Rong Jie
Published: April 2013

A novel non-halogen flame retardant APESP, cyclotriphosphazene containing six aminopropyltriethoxysilicone functional groups N3P3[NH(CH2)3Si(OCH2CH3)3]6, was synthesized by menas of SN2 nucleophilic substitution reaction, using hexachlorocyclotriphosphazene(HCCP) and 3-aminopropyltriethoxy-silane (KH550) as material. Firstly the industrial grade HCCP was purified through recrystallization and sublimation. Then the reaction process was investigated to prompt the yield, and the optimum reaction conditions were as follows: triethylamine as acid-binding agent, tetrahydrofuran as solvent, HCCP/KH550/triethylamine molar ratio 1:7.2:7.2, dripping time: 1 hour, temperature: 67°C and reaction time: 20h. Maximum APESP yield reached 94.3%. The chemical structure and purity was characterized by element analysis, Fourier-transformed infrared spectroscopy (FTIR), mass spectrum, gel permeation chromatography (GPC) and nuclear magnetic resonance (NMR) analysis. The results showed that the structure of synthesized product is consistent with the theoretical structure, in which the chlorine atoms were completely substituted. The charge distribution calculation of HCCP and KH550 confirmed the reaction mechanism.
A Review on the Methods of Improving Fiber Distribution of Engineered Cementitious Composites (ECC)
Authors: Niu Heng Mao , Xing Yong Ming , Zhao Yan Ru
Published: April 2013

Engineered cementitious composites(ECC) are characterized by strain hardening and tight crack width control. Good fiber distribution can maximize fiber contribution at each stage of the crack bridging process. However, poor fiber distribution can be disadvantage to fiber contribution, even influence the robustness of strain-hardening. Combined with the latest research results, this review highlights the methods of improving fiber distribution in ECC. Good fiber distribution is based on excellent matrix fluidity, which can be determined by mineral admixtures, admixture and water/binder (w/c). Fiber included surface morphology, size and content of fiber have also an effect on fiber distribution in the ECC. Additionally, slag and sand size shape of matrix components play a surprising role on fiber distribution. Based on the reviewed methods it is argued that fiber optimization and matrix components tailoring can be used to improve fiber distribution.
Research on Flotation Mechanism of Quartz Using Magnesium Ion as Activator
Authors: Yin Rui Ming , Chen Lin Zhang , Hou Qin Ling , Li Jing , Liu Tai Rong
Published: April 2013

This article studies on flotation of quartz using magnesium ion as activator in the system of dodecyl sulphate，studies of magnesium ion on ZETA potential of the quartz surface and the flotation recoveries of the quartz through flotation experiment, ZETA potential measurement and infrared spectroscopy and solution chemistry of magnesium calculation. The results show that ZETA potential of the quartz surface showed negative charge when the pH＞2，is not conducive to the adsorption of the anionic collector dodecyl sulphate. When adding magnesium ion, ZETA potential began to rise sharply, and the recovery rate of the quartz began to increase sharply at pH = 8. ZETA potential of quartz surface show positive charge, and the recovery rate of the quartz is corresponding to the maximum within pH=10-12. Combined with the solution hydrolysis of magnesium ion, it can be determined, Mg(OH)+ is the main active ingredient that activate flotation of quartz in the system of anionic collector dodecyl sulphate, and when magnesium hydroxide reaches a certain concentration, flotation of quartz began to be inhibited.
Functionally Graded Structures through Building Manufacturing
Authors: Craveiro Flávio , Bártolo Helena , Bártolo Paulo J.
Published: April 2013

The construction industry is facing an increasing pressure to optimize its performance reducing costs and minimizing its impact on the environment. The built environment is a very demanding human and dynamic environment facing rising challenges to develop more innovative and efficient solutions. New technologies, growing client expectations and a shift in design thinking are motivating radical improvements in the construction sector towards more integrated systems through computational fabrication processes. A RapidConstruction System was developed based on extrusion-based technologies to enable the construction of eco-efficient buildings with complex forms and geometries. The optimization of this new system will enable to integrate the concept of material space, material composition information of building heterogeneous components with geometry information, assigning different spatial features according to requirements. This new 3D digital processing system was used to fabricate functional graded structural components with different material compositions, so its functional requirements can vary with location. The development of this multi-material deposition system is ongoing to enable the fabrication of more efficient structures regarding thermal, acoustic and structural conditions.
Mass Customization in the Tourism Industry of China
Authors: Han Zhao , Cheng Guo Ping
Published: April 2013

Since entered 21st century, the development of great potential for mass customization production mode have been all walks of life study and practice. And our country tourism industry is still faced with rigid management mode, operation with high cost problem. This paper briefly analyzes the significance of the mass customization production mode and features, tried to put the mass customization applied in tourism industry, hope for our country tourism enterprise application mass customization production mode to provide some help.
Application of AHP in Material Selection in Slope Protection Project in Riverway
Authors: Zhao Chuan , Cheng Guo Ping
Published: April 2013

In recent years, with the development of engineering material technology and its application in project, a number of choices are available for the slope protection project in riverway. For the increasing number of applications of gabion and reno mattress in such engineering projects, as advanced flexible materials, which are also obviously competitive in protection effect and service life, they are more expensive comparing to the traditional masonry and concrete. Therefore, comprising AHP method and both the qualitative and the quantities analyses focusing on five major factors, the execution condition, construction cost, protection effect, service life and management & maintenance, this paper provides reference for decision-makers to choose the most appropriate material in the slope protection project.
Analysis of Coal Gangue Pollution Control Technology
Authors: Liu Yan Guang , Yu Li Nan , Zhou Ai Guo
Published: April 2013

In this paper, we discussed the gangue on the mining area that have bad economic and environmental impact. It has been shown that the coal gangue accumulation could seriously prevent the regional ecological and economic sustainable development. Pollution control technology is the key to solve this problem. So we analyzed it and divided it into three categories: coal gangue prophylaxis and treatment technology of pollution and geologic hazard, coal gangue hill vegetation restoration technology and coal gangue comprehensive utilization technology.
Software Implementation of the Algorithm the Statistical Straggling of the Mechanical Properties of Materials in the Design of Structures
Authors: Kashevarova Galina G. , Martirosyan Anna S.
Published: April 2013

The random character of mechanical properties of building materials reveals itself when construction structures are tested even though all prescribed technological standards and requirements are met. The paper presents software implementation of the algorithm the statistical straggling of the mechanical properties of materials in the design of structures. This algorithm is built into the software AnSysBuildingBlock (ASBB), developed by us, whose interface is presented here, and which can automatically generate the code for the settlement complex ANSYS. Consider an example in which the impact of scattering mortar mechanical properties on the stress-strained state of brick masonry and its structural destruction was investigated.
Assessment of the Corrosion Characteristics of the Carbon Steel under Different Atmospheric Environments
Authors: Jeong Young Soo , Kainuma Shigenobu , Ahn Jin Hee
Published: April 2013

Various maintenance problem has been reported according to the increase in service period of steel structures. It is difficult to examine and evaluate the corrosion problem and phenomena because of its uncertainty based on the environmental condition. Thus, the corrosion characteristics of the carbon steel were investigated to analyze the corrosion effect of carbon steel on the different atmospheric environments. The atmospheric exposure tests on uncoated carbon steel plates were conducted, to examine the corrosion phenomena and to obtain a fundamental corroded surface under different corrosion atmospheric environments. The corrosion characteristics of the carbon steel were compared depending on their different atmospheric environment and their exposure periods.
Development of Nanoemulsion Formulations of Ginger Extract
Authors: Uthumpa Chutamas , Indranupakorn Ratana , Asasutjarit Rathapon
Published: April 2013

The aim of the study was to enhance the stability of 6-gingerol, a major constituent in ginger extract, using nanoemulsion formulations. The effects of extraction techniques and solvents on the content of 6-gingerol in ginger powders were investigated. Assessments of three commonly used extraction techniques (maceration, sonication and soxhlet extraction) with two different extraction solvents (methanol and acetone) were used in this study. The highest of 6-gingerol content was obtained by using soxhlet extraction with acetone. Nanoemulsions were prepared from a mixture of oil phase (coconut oil and squalene), Cremophor® ELP, acetone and ginger extract by spontaneous emulsification method. Effect of coconut oil and squalene mass ratio on nanoemulsion formations were evaluated for the further optimization of the system, which characterized by droplet size, polydispersity index (PI), zeta potential and Oswald ripening. Stability studies at 4°C and ambient temperature for 3 months were performed. The formulation containing the mass of coconut oil to squalene ratio of 0.8:0.2 was stable and had the required droplet size (122.2+2.2 nm) in relation with PI of 0.18+0.07, zeta potential of -20.8+0.4 mV and Ostwald ripening of 0.11 nm.day-1. Negative-staining transmission electron microscopy (TEM) was used to image the emulsion droplets. Stability test under heating-cooling cycle also performed on optimized nanoemulsion. Then, the sample was analysed for 6-gingerol content. The percentage of the remaining 6-gingerol of optimized nanoemulsion was 90.89. Hence, it was concluded that the stability of 6-gingerol could be enhanced by using nanoemulsion formulation.
The Effects of Applied Stress and Test Temperature on the Environment-Induced Cracking Behavior of Carbon Steel in NH4NO3 Solution
Authors: Koide Kenichi , Iwase Akihiro , Nishimura Rokuro
Published: April 2013

The effects of applied stress and test temperature on the environment-induced cracking (EIC) behavior of carbon steel in 5 kmol/m3 NH4NO3 solution were investigated by using constant load method. The three parameters (time to failure (tf), steady state elongation rate (lss) and transition time to time to failure ratio (tss/tf)) were obtained from a corrosion elongation curve. The relationships between applied stress and the three parameters were divided into three regions; the stress-dominated, the EIC-dominated and the corrosion-dominated regions. Under an applied stress of 225 MPa (in the EIC-dominated region), the test temperature dependences of the three parameters were investigated. Although tf decreased with increasing test temperature above 323 K, it became constant independent of test temperature under 323 K. Whenever the EIC takes place, the relationship between log tf and log lss become a good straight line with a slope of -1.1 irrespective applied stress and test temperature, which means that lss becomes a parameter for predicting tf. In addition, the fracture appearance in the EIC-dominated region was intergranular. From the results obtained, the intergranular cracking of carbon steel was discussed in terms of film formation, dissolution and hydrogen permeation.
Influence of Bentonite Content on the Static Liquefaction Behavior of Sand
Authors: Tang Xiao Wei , Ma Ling , Dieudonné Simon
Published: April 2013

The landslide with static liquefaction often occurs in loose fill slopes with silty sand for the rainfall, causing lots of casualties and property loss. This study performed a series of static CU triaxial tests to investigate the influence of Bentonite content on the static liquefaction behavior of sand. The results indicate that there exists a critical value, below what increasing the Bentonite content reduces the resistance to static liquefaction. However, above the value the resistance to static liquefaction is increased with the rise of Bentonite content. This conclusion can be applied to manage the disaster triggered by the landslide with static liquefaction.
Application of the Phase Change Material in Building Energy Efficiency
Authors: Pan Ying , Zhao Xiao Dong , Zhao Xiao Feng
Published: April 2013

Phase change material possesses excellent heat storage performance that can provide some advantages to buildings. This paper introduces the properties of the phase change material , discusses the criterion of the phase change material that can be used in architecture, analysis the principles about the architectural application of phase change material, and especially discusses the ways how to use the phase-change energy storage materials for construction in building energy efficiency. Besides, this paper also analysis the future prospects and some problem still existing.
Preparation and Characterization of Organically Modified Sepiolite by Octadearyl Dimethyl Ammonium Chloride
Authors: Ma Kang , Lan Bei Chen , Guo Zhen Hua
Published: April 2013

To improve the compatibility and dispersion of the sepiolite in polymers, a surfactant of octadearyl dimethyl ammonium chloride（OTAC）was used to modify sepiolite. The experiment was used to analyze the effects of OTAC dosage, reaction temperature and reaction time on the wettability of organically-modified sepiolite. The effects on the structure performance of sepiolite were investigated by XRD, SEM and contact angle measurements. The orthogonal experimental esults show that the optimum amount of OTAC, reaction temperature and reaction time are 400 mmol/kg, 90 °C and 120 min, respectively.
Kinetic Study of Methyl Orange Adsorption from Solution by IOCZ
Authors: Li Yi Ke , Zhao Bing Lu , Xiao Wei , Han Run Ping , Li Yan Qiang
Published: April 2013

The effect of contact time and the determination of the kinetic parameters of adsorption of methyl orange (MO) from aqueous solution onto Iron-Oxide-Coated-Zeolite (IOCZ) powder are important in understanding the adsorption mechanism. The effect of contact time on adsorption quantity was studied at different initial concentration and temperature, respectively. The pseudo-second-order model was adopted to fit the experimental data using non-linear regressive analysis and it was used to predict the adsorption behavior. The results showed that the process of adsorption MO was endothermic and chemisorption. The pore diffusion was not significant.
Removing Lead Ions from Aqueous Solutions with Sulfur-Impregnated Adsorbents
Authors: Wajima Takaaki
Published: April 2013

The removal of lead ions from aqueous solutions was studied using a sulfur-impregnated adsorbent. Coal was mixed with K2S powder and then heated at 800°C for 30 min in nitrogen to produce a sulfur-impregnated adsorbent. The sulfur-impregnated adsorbent prepared had a high sulfur content and high specific surface area. The adsorbent showed a high removal ability for lead ions, and a high removal ratio for lead ions in binary Pb2+-Na+ and Pb2+-Mg2+ solutions. This characteristics were similar to unitary Pb2+ solutions. These results indicate that the sulfur-impregnated adsorbent has a high selective adsorption ability for lead ions in aqueous solutions.
Accumulation and Distribution of Soil Organic Carbon in Phragmites communis Wetlands Restored with Ecological Engineering
Authors: Wang Hui , Yang Bao Shan , Dai Shu Hua
Published: April 2013

Soil organic carbon (SOC) is vital for the global carbon cycle and balance. In order to study the factors that affect the changes of SOC at different levels (0 ~ 20 cm, 20 ~ 40 cm) in degraded areas and continuous water supply area (3 years, 5 years, 7 years), Phragmites communis wetland of the Yellow River Delta were sampled. The results showed that the upper soil layer (0-20cm) had more SOC than the lower soil layer (20-40cm) in the restored sites. The SOC increased in the 0-20cm soil layer from 7.710±0.756 g/kg to 16.96±0.213 g/kg. Soil salinity and pH value decreased with the freshwater restoration, while SOC increased with the restoration time. SOC had extremely significantly negative correlation with pH (r = -0.564, P < 0.01). The correlation analysis of soil properties showed that SOC had significantly positive correlation with total nitrogen (TN) and NH4+-N (P <0.01) and had negative correlation with C/N. It suggested that wetland restoration not only increased soil organic carbon content, but also improved the ability of nitrogen mineralization.
Implementation of Microbial Fuel Cells (MFCs)-Based Wastewater Treatment
Authors: Ahn Young Ho
Published: April 2013

This paper provides feasibility estimation for actual domestic wastewater treatment under assumptions of a flow of 10,000 m3/d (about 40,000 capita), when air cathode MFCs configurations were adopted. Temperature-phased (mesophilic-ambient) process configurations in which can achieve either better effluent quality (i.e. maximizing treatment) or high energy recoveries is schematized. The performance used in the mass balance analysis of the treatment process conducted here compared with typical values in conventional biological wastewater treatment. Various advantages of using MFCs for wastewater treatment, including energy saving, less sludge production (and perhaps the lack of a need for a secondary clarifier), and no need for sludge handling, etc., were also addressed.
A Critical Evaluation of Nuclear Power Plant Project in China
Authors: Li Han Fang , Qu Zong Qin , Gong Ai Qing , Wu Xiao Hua
Published: April 2013

The nuclear power is the clear energy and the nuclear power plant is the good power plant project, but someone disagree the project for the environment impact from the nuclear radioactivity. This paper compares the different opinions about the nuclear power project and analyzes the existing problems. The advantages of the nuclear power plant are the abundant raw material uranium, the light environment pollution, the low operation cost and the environment radioactivity risk. The disadvantages of the project are the public fear from the nuclear risk, the difficult to dispose the nuclear waste, and the difficult to dismantle the nuclear power plant. My opinion is to develop the nuclear power plant in places with poor energy resource, and develop the hydroelectric power plant in places with rich water resource, and develop the wind power plant in places with rich wind resource, and develop the heat power plant in places with rich coal, oil, natural gas or other fossil fuel resources.
Experimental Analysis for Piezoelectric Transducers Applications into Roads Pavements
Authors: Cafiso Salvatore , Cuomo M. , Di Graziano A. , Vecchio C.
Published: April 2013

The purpose of this study is to validate the use of piezoelectric transducers into the road asphalt pavement in terms of effectiveness and production of energy. FEM and laboratory test were conducted for transducers within an asphalt pavement, in order to study traffic load effects, the better suitable position, the pavement materials and environmental factors influence. The energy produced by the piezoelectric transducer within the pavement is very low if referred to a single sample as the one in the experiment and when compared to the amount which can be produced by the transducer not embedded in the pavement layers. It is necessary to highlight that higher energy production can be obtained using PZT of different size and with a network connection.
Effect of The Sigma Phase on the Mechanical Properties of a Cast Duplex Stainless Steel during the Ageing Treatment at 850°C
Authors: Liang Tian , Hu Xiao Qiang , Kang Xiu Hong , Li Dian Zhong
Published: April 2013

With about equal amount of austenite and ferrite in volume fraction, duplex stainless steel (DSS) is in advantage of mechanical properties and corrosive behaviors. Hence it is widely applied to the heavy castings for nuclear power plants inshore, such as impellers, pumps and valves. However, lots of cracks usually occur in these castings during manufacturing processes, because it is susceptible to precipitate the brittle intermetallic compound of sigma phase when the castings are exposed from 600 to 1000oC. In this work, the precipitation of sigma phase was observed by optical microscope (OM) and scanning electron microscope (SEM) in a cast DSS named as MAS/6001, which aged at 850oC from 5 to 300 minutes. The effect of sigma phase on the mechanical properties was analyzed by the tensile at room temperature and impact tests at -10°C. The results show that sigma phase in the MAS/6001 steel precipitated simultaneously with the secondary austenite, which obeyed the eutectoid reaction. The interfaces between austenite or secondary austenite and sigma phase were the locations where cracks generated from the void aggregation. Cracks are susceptible to propagate along or cross these interfaces, and to promote the sigma phase breaking-off, which severely deteriorated the mechanical properties.
The Effect of Directional Flow of Metallic Melt on the Structure of Cast Metal
Authors: Apakashev R. , Valiev N.
Published: April 2013

There was studied the effect of directional flow of metallic melt on the forming of the structure of an ingot. Authors found out the possibility of the forming of micro- and nanostructures of solid metal by treatment in a molten state without the use of alloying elements and with negligible energy consumption on the deformation.
Model and Simulation of Six-DOF Parallel Platform Based on Direct Drive Volume Control
Authors: Dai Xiao Lin , Zheng Huai
Published: April 2013

The fuel system experimental platform based on Stewart manipulator is used to test the performance and reliability of airplane’s fuel system. Synthesizing efficiency and safety, direct drive method is used as actuator of the experimental platform. Kinematic and dynamic model of the parallel manipulator platform is established. Servo motor and hydraulic cylinder of pump control are modeled for deducing the mathematical model of the experimental platform. Simulation results of the experimental platform show the platform of direct drive method can satisfy the requirements of operation. In addition, data from the simulation can be used as the basis for the design and optimization of the experimental platform for fuel system.
Review and Prospect for the Land Seismic Data Acquisition System
Authors: Yang Yang , Chen Zu Bin , Zhang Yan , Du Yu Jian
Published: April 2013

Essential characteristics of the seismic data acquisition system should make it capable of measuring high fidelity Seismic data，which can be used for geophysicists to fulfill a geological task. New developments of high technology in Micro-electronics and computer industries, including the extremely low-noise capacitive micro-accelerometer sensor, 24 bits A/D conversion, new generation wireless data transmission, etc. are introduced to the seismic data acquisition system to meet the requirement for global oil and gas exploration. New type of acquisition system faces the new exploration techniques, methods and tasks.