bluuebunny/crossref_metadata_2025 huggingface dataset:
Construction of Genome Library for the Toxic Gene of Alexandium minutum
Authors: Wang Li , Li Jia Yuan , Xu Qi , Zhong Qing Ping , Liao Zhen Lin
Published: September 2013

Genome library of toxic Alexandium minutum were constructed. A 1014bp DNA reconstruction fragment was obtained and PCR method testified that this fragment had strong amplification signal in toxic strains while no signal in non-toxic strains. The external sequence of the DNA fragment was analyzed by inverse PCR method, and a 240bp nucleotide sequence which translated into proteins aminophenol was Methionine Aminopeptidase (MAP). The sequence of aminophenol was BLAST in NCBI, and found that it had 97% similarity with Alexandium fundyense. This sequence was exact uniform with the reported sequence in the coding region, but there were three bases mutated in non-coding region behind stop codon. Probably, in the course of growth metabolism of Alexandium minutum, MAP executed different physiological functions and controlled the production of the toxin. In the meantime, map gene induced encoding products of the related poisonous gene, and enabled it has active expressions to starting toxin synthesis.
Novel Structures and Properties of Ni Nanowires
Authors: Wang Fan , Zhao Xing Yu , Cui Lei
Published: September 2013

Atomic structures and properties of Ni nanowires are studied by using the generalized simulated annealing method with SuttonChen potential. Amorphous-like, helical, face-centered cubic and defect structures are found for different wire lengths. And from the analyses of the binding energy and angular correlation function (ACF), it is found that the helical structure of the Ni nanowires is the most stable form. With the compression and extension, the nanowires could transform from fcc [11 structure to fcc [110] one.
Study on Influence of Thermal Conductivity of Building Material on People's Physiology and Psychology
Authors: Zhao Ameng , Cui Guang Cheng , Ding Yong Zhuo , Yu Ting , Xu Jing Chao
Published: September 2013

This study was conducted to discover the relations between thermal property of building materials and people's physiology and psychology. Heart rate variability of electrocardiogram ( ECG ) and alpha, beta, theta waves of electroencephalogram ( EEG) were examined in ten adult healthy volunteers. And also a combined analysis on inner correlations among physical parameters of material, human physiological indexes and subjective rating was proceeded. Physiological experiment research was carried out in environmental science laboratory. Environmental stimuli derived mainly from the building material to be tested. The results suggest that the density and coefficient of thermal conductivity are decisive effect factors on the physiological changing degree of human.
Prediction of Soil-Cement Mechanical Properties Using EC2 Approach
Authors: Tinoco Joaquim , Correia António Gomes
Published: September 2013

For a better design of Jet Grouting (JG) and Cutter Soil Mixing (CSM) technologies, a set of laboratory formulations are usually prepared aiming to give a first idea of the mechanical behavior of the final mixture. However, these formulations can represent an important cost to the project. Therefore, aiming to reduce such cost, in the present work the analytical expressions proposed by Eurocode 2 for strength and stiffness prediction of concrete were adapted to soil-cement laboratory formulations for JG and CSM projects. It is shown that these expressions can be successful applied in mechanical properties prediction over time of soft soil stabilized with cement for a wide range of cement content, water cement ratios and soil types.
Action Mechanism of the Improvement of Printability for Eucalypt Bleached Kraft Pulp Pretreated by Cellulase
Authors: Tang Wan You , Chen Li , Zhang Zheng Jian
Published: September 2013

Enzymatic refining of eucalypt bleached kraft pulp with the cellulase NOV476 was studied. The effects of this cellulase on the physical properties of pulp, fiber morphology and fiber appearance of the eucalypt bleached kraft pulp in different application conditions were discussed. The results show that, with the increase in the amount of enzyme, tensile strength index, burst index and TEA index of paper are increased and then decreased; elongation and tear index of paper have been declining, Zeeil tensile strength index has been an upward trend. Without beating the pulp sample, gradually increases as the amount of enzyme, the average fiber length and the average fiber width are gradually reduced, while mean kink index substantially constant. Number of vessels in fiber overall reduced tendency reaches a minimum in the amount of enzyme 0.5μ/g, the phenomenon is most obvious. In the same conditions of beating time, gradually increases as the amount of enzyme, the average fiber length is gradually reduced, an average fiber width is gradually increased, the mean kink index reaches a maximum in the amount of enzyme is 0.5μ/g. Number of vessels in fiber overall reduced trend.
Effects of Mg2+ Doping on Performance of Anode Material Li4Ti5O12
Authors: Wang Neng Wei , Huang Zai Chun , Cui Xu Mei , Wu Zhao Yu
Published: September 2013

Anode material Li4Ti5O12 was prepared by the method of solid-state reaction at high temperature. In the experiment, it was utilized by undoping and a small amount of Mg2+ doping with raw material respectively. The morphology of powder was observed by scanning electron microscopy (SEM), the phase analysis was done by X-ray diffraction analysis (XRD), and the charging and discharging tests with constant current were also carried out at room temperature. The results showed that little effect was on the particle size by a small amount of Mg2+ doping, the change of the structure of the powder material was not caused, but the conductivity of Li4Ti5O12 anode material was increased, the capacity and stability of the charging and discharging cycles were raised. It fully proved that Mg2+ doping was relatively effective. Keywords: Li-ion battery;lithium titanate (Li4Ti5O12); doping;charging and discharging.
Experimental Research on Failure Modes of Specimen Containing Non-Coplanar Joints
Authors: Cao Ping , Fan Wen Cheng , Zhang Ke
Published: September 2013

To study the failure mechanism and failure mode of jointed rock under compressive-shear, many rock-like material specimens containing non-coplanar joints were made and a series of experiments were carried out. In the experiments, mica sheets were used as joint fillings, cement mortar was selected as rock-like material. Joints were made by inserting the mica sheet in cement mortar before initial setting. Mica sheets were left down as joint fillings. The results of experiments show that the dip angles of major joint have important influence on the failure mode of specimens. And the emerging position of wing cracks which exist in the prophase of specimens failure process changes with the dip angle. The shear strength of specimens has an important relationship with the dip angle of major joints. The smallest shear strength happens in the specimen with a joint angle of 15°, while the biggest value happens in 60°.
Hot-Pressing Process of the the API Adhesivepressed Veneer Straw Composite Panels
Authors: Zhang Shi Cheng , Pang Jiu Yin , Gao Zhen Guo
Published: September 2013

Using veneer and Straw shavings two kinds of raw materials to manufacture composite way veneer straw composite panels, Discussion the straw coverings density, hot-pressing process and other factors on the performance of the board, and a simple analysis of the economic benefits of such a plate. The results show that: The production veneer straw composite panels optimum process is pressing temperature 160°C, hot pressing time 1min/ mm, straw sizing quantity is 12%, API adhesive formulations：API adhesive formulations: Ratio of main agent PVA: SBR for 7:3, Crosslinking agent amount (P - MDI) 30% , density of not less than0.85g/cm³. The board each performance index of the optimal, fully able to meet the requirements of national standard, adopt the process sheet belongs to no aldehyde board.
Effect of Gallium Doping on the Properties of GZO Target
Authors: Liu Cun Qi , Cai Xue Xian , Zhang Zhong Jian , Gao Ling , Xiao Chao , Shang Fu Liang , Yang Hai Tao
Published: September 2013

The main purpose of this paper was to analyze how the doping content of Ga2O3 effect the Gallium doped zinc oxide (GZO) targets. GZO targets were prepared by air sintering. The density, sheet resistance, bending strength and Vickers hardness were measured. The morphologies and microstructures were characterized by XRD and SEM. The results showed that GZO target with Ga2O3 content of 1wt% showed the best properties which corresponded to the highest relative density and bending strength of 99.2 % and 91.79MPa respectively, and the lowest sheet resistance of 7.36Ω/. While the Ga2O3 content was higher (2 wt% or 3 wt %), the second phase came out.
Model Analysis of Pressure Fluctuation in the Pressurized Submerged Combustion
Authors: Gong Xiao Long , Feng Qing , Liu Zhong Liang , Tang Wen Ju
Published: September 2013

In this work, we will propose some improvements and innovations for Submerged Combustion, namely a Pressurized Submerged Combustion Technology. This paper introduces the Pressurized Submerged Combustion and some basic theoretical research.To understand better gas pressure fluctuations and their influence in flame stability, a mathematical model is developed in this paper, and its particular solution is elucidated. The results show that, the variations of pressure are influenced by bubbling which is a self-excited oscillation phenomenon. Increasing the damping of liquid motion is very helpful for stabilizing pressure fluctuations. The model can be used for guidance and optimization design of Pressurized Submerged Combustion equipments.
Triaxial Test on the Construction-Aid Soil Stabilizer in Stabilizing Fine-Grained Soil
Authors: Shi Bao Hua , Song Ying , Ren Wei , Xu Wei , Zong Liang Yu
Published: September 2013

Based on the airport pavement construction features and utilization requirements, we stabilize the fine-grained soil in Jining district of Shandong province by using the construction-aid (con-aid) soil stabilizer.We test the stress-strain curve and Mohr failure envelope of the triaxial shear of the fine-grained soil before and after being stabilized under various confining pressure by using the unconsolidated-undrained (UU) triaxial test method. We also analyze the change rules of the cohesive force Cu and internal friction angle φu to evaluate the effect of stabilizing fine-grained soil by using the con-aid soil stabilizer. In addition, we discuss the feasibility of applying the stabilizer in constructing the airport pavement and roads.
Application of Thermoregulation Materials in Clothing Materials
Authors: Zhang Miao , Wang Xue
Published: September 2013

This article records the application of various types of temperature control fiber in modern clothing, which makes peoples life more comfortable.
A Optimized Model for Runway Takeoff Scheduling
Authors: Lu Jing , He Yuan Qing , Xia Gui Shu
Published: September 2013

Runway operations planning as the main runway operation tactical planning tool, its performance affects a variety of operational activites safety and efficiency of airport and terminal area. In order to reduce the take-off delay, this paper proposed a runway scheduling model based on multi-objective for airplane takeoff scheduling optimization. The experiment shows that compared with the algorithm of first come first serve, the new model has better runway throughout, less delay and less cost.
Study and Application of Traffic Flow Forecast Based on PSO-WLSSVM
Authors: Xu Fei , Shi Yao Zhong , Wang Ke
Published: September 2013

With wavelet function introduced to improve least square support vector machine kernel function and the wavelet least square support vector machine (WLSSVM) improved using particle swarm optimization (PSO), PSO-WLSSVM for traffic flow prediction is proposed. PSO-WLSSVM inherits good time and frequency domain distinguishing ability from wavelet transform, and the nonlinear learning performance from LSSVM; PSO is used to conduct global optimum search of super parameters so that the blindness of human selection could be avoid. Thus the accuracy of model predictions is improved. The simulation result shows that the forecasted traffic flow of PSO-WLSSVM are in good agreement with the measured value, and the forecasting precision of PSO-WLSSVM than the traditional LSSVM, thus indicating that the PSO-WLSSVM is feasible and precise and can be well applied to the forecast of traffic flow.
Automatic Waring System of Tunnel Monitoring and Application
Authors: Wu Sheng Lin , Deng Hong Liang , Chen Kai Jiang , Zhu Ming Yan , Huang Dong Hui , Fu Si Yuan
Published: September 2013

Tunnel monitoring and measurement is a very important part of the tunnel construction's safety,monitoring technology and information management technology is directly related to the tunnel construction's safety and quality, Although domestic and foreign scholars have done a lot of research on tunnel monitoring measurement technology and information management technology,because of the characteristics of invisibility, uncertainty and variability in tunneling, the level of the monitoring technology and information management are far from construction's requirements.This paper based on ACCESS and GTS, researching and developing automatic warning system of tunnel monitoring,and realizing the information management and early warning forecast of tunnel monitoring measurement data. Engineering practice shows that the system can processing and analyzingthe data fast, convenient and real-time , realize automatic early warning forecast, and provide reliable basis for information construction management of tunneling
Molecular Simulation of the Adsorption of Cold Start Hydrocarbons Emission from Diesel Engines in Zeolite
Authors: Deng Yuan Wang , Han Wei , Yin Liang
Published: September 2013

A better understanding of the adsorption behaviors of hydrocarbons on adsorbent would help trap the hydrocarbons emitted from diesel engines during cold start period more efficiently. In this paper, the adsorption behaviors of hydrocarbons in LTA zeolite was studied using Grand Canonical Monte Carlo (GCMC) simulation. The adsorption isotherms and mass clouds are obtained for both pure component and binary mixtures under certain temperatures. The adsorption isotherms reveal that the average loading of ethylene and propylene has the similar trend. Both of them increase with the increase of pressure and decrease significantly with the increase of temperature. The binary mixtures show competitive adsorption behavior. Propylene is adsorbed much more strongly than ethylene in LTA zeolite. The obtained mass clouds show that propylene distributes in both the α cage and β cage of the LTA zeolite, while ethylene distributes mainly in the β cage of the LTA zeolite.
Abnormal Events Detection in Traffic Data
Authors: Hu Xiao Bing
Published: September 2013

Detecting abnormal events such as crash is a practical problem that is important to Intelligent Transportation System. By taking advantage of the data recorded by the remote sensors which are deployed along the road, we can perform data mining techniques to see whether there are abnormal events happening on the road. This paper aims at proposing an abnormal-events-detecting method based on the traffic data, which first utilizes outlier detection to generate a fuzzy result set from source data, and then through the time series mining techniques to filter that to obtain an accurate experimental one. Experiment with real-world data shows that our method works satisfactorily in detecting abnormalities such crash, stall and hazard on the road.
Reliabiliy of Road Network Layout and Optimization Methods Based on the Connectivity
Authors: Sun Xiao Nian , Chen Shuo , Mai Yuan Yuan , Wang Xian Guang
Published: September 2013

This paper conducts an in-depth research on applications reliability in highway network planning and optimization of construction sequence. It introduces the concept of reliability to the layout of the importance of the road network node and establishes a fairly comprehensive theoretical method of highway network planning based on the reliability from the aspects of the road network layout, evaluation, and construction sequence arrangements. Case study illustrates the proposed layout optimization method has achieved satisfactory results in the road network reliability analysis, displaying strong practical promotional value.
High Temperature CO2 Capture by Regenerable Calcium Aluminates Carbonates Sorbents
Authors: Yu Ching Tsung , Cheng Han Wen , Chen Wei Chin
Published: September 2013

The calcium aluminates carbonates are prepared as mediumhigh temperature CO2 sorbents. The sorbent exhibited excellent performance with 53 wt% capacity and 99% stability in TGA test for 15 h. However, using the sorbent in a fixed-bed reactor, it was found that the stability rapidly decreased to about 35% after 10 cycles. Hence, development of regeneration methods for reusing this spent sorbents is critical to economic consideration toward CO2 capture technology. The calcium aluminates carbonates sorbent makes up layered structure including cations formation (Ca2+, Al3+) and lamella anions (CO32-, OH), which can be re-constructed under aqueous conditions. Aqueous hydrolysis provides an efficient route to reactive sorbent. The results showed that CO2 capacity could be recovered to around 50 wt% with 98% stability in TGA test for 15 h for spent sorbents. The reactive mechanism of sorbent is worthy to further discussing.
Isolated Intersection Traffic Signal Timing Problem: A Fuzzy Control Approach and a Case Study
Authors: Han Hui Shi , Yu Jian
Published: September 2013

Considering the randomness of the traffic flow, a self-adaptive control method for isolated intersection signal timing is proposed, which imitates the traffic polices signal controlling behaviors. Firstly, we define the concepts of Busy Level (for the phase that has got the right of way) and Urgent Level (for the other phases that have not got the right of way). Based on the definitions, the signal control method is put forward, which can be summarized in brief that when Urgent Level is greater than Busy Level, the phase with the highest Urgent Level gains the right of way. Then, based on the fuzzy control theory, we elaborate the fuzzy modeling process of Busy Level and Urgent Level and put forward an optimization method of the membership function using the traversing method. The proposed method is a breakthrough comparing with the old methods that optimize the circle time, the split or the amount of the green time extension. The method has the charactaristics of no fixed circle time, no fixed phase sequence and is more effective to suit the fluctuant traffic flow. At last, the computational results of an simulation demostrates that the proposed method is far more effective than the pretimed signal timing methods.
Research of Effect on the Levee by Drawdown of Caisson Foundation of the North Anchorage of Maanshan Yangtze River Bridge
Authors: Liu Yi , Yang Yan Hua , Ji Fu Quan
Published: September 2013

On account of the north anchorage of Maanshan Yangtze River bridge, the drawdown of caisson foundation may bring about new seepage field of the ground, which make soil consolidate. This paper build two-dimensional plane strain finite-element models of open caisson and the Yangtze River levee, which aim to analyze the effect on the Yangtze River levee by drawdown of the open caisson foundation. Through the seepage analysis of the open caisson foundation and the stability analysis of the slope, this paper obtain the settlement and coefficients of stability against sliding of the Yangtze River levee.
Application Effect Analysis of Magnetic Gradients Data Continuation from Undulate Surface to Plane
Authors: Li Hai Xia , Yu Hai Long , Zhang Xiao Ling
Published: September 2013

Application effect of magnetic gradients data continuation from undulate surface to plane has been analyzed by model test. The gradient data of before and after the processing was used for the analytic signal and the Euler deconvolution method calculation respectively, comparing the calculated results show that the maxima of analytic signal calculated by gradients anomaly on undulate surface deviate obviously from the center location of the prism magnetic source, and the position of prism boundaries are not clear. However, the analytic signal calculated by gradients anomaly after continuation from undulate surface to plane can be successfully used to estimate the center and boundaries position of prism. The solutions of Euler deconvolution method calculated by gradients anomaly on undulate surface are dispersive, the solutions calculated by gradients anomaly after continuation from undulate surface to plane are relatively clustering, and can outline clearly the positions of prism corners. The results demonstrate that continuation from undulate surface to plane processing of gradients anomaly can improve the application effect of analytic signal and Euler deconvolution technique.
Research on the Modal Damping Ratio for Stay Cable with Viscoselasticity Damper in Cable-Stayed Bridges
Authors: Chen Shui Sheng , Wang De Shan
Published: September 2013

Taking the bending stiffness, cable static sag and cable inclined angle into consideration, equations of space free vibration of the cable-damper system are derived in this paper. Joining the variable separation strategy and center difference method, the partial differential equations are discretized in space and a set of complex eigenvalue equations, which are solved by state space method, are derived, and both the maximum modal damping ration and the optimal damper parameter are obtained. Several typical stay cables are investigated for both the in-plane and out-of-plane modes under different cable parameters and damper parameters. The results demonstrate that modal damping ratio for the first in-plane mode is significantly affected by the cable static sag only, but those for the other modes affected by cable sag are slight, and cable static sag do not affect the optimal damper parameter for all modes, however the bending stiffness will changes both the maximum modal damping ratios and the optimal damper parameters. Some valuable suggestions are proposed for the optimal damper design.
Comprehensive Evaluation on Energy-saving Window Material Based on Weighted TOPSIS
Authors: Liu Jun , Zuo Zong Zhe , Liu Ning , Chen Chen
Published: September 2013

This paper analyzes factors that affect the goodness of windows, establish a comprehensive evaluation attribute system, which includes five aspects: economical, energy-saving, environmental, healthy and comfort, safety. Puts forward a new weighting method by combining entropy weight and gray relational analysis, which considers both quantitative and qualitative analysis; and then, establishes a model of weighted TOPSIS to rank objectives being evaluated.Case study shown that this method is effective and reasonable in energy-saving window material comprehensive evaluation, provides support for multi-attribute decision making.
Methodology for Evaluation of Lighting Standards at an Expressway Tunnel Threshold Zone
Authors: Hu Jiang Bi , Li Ran , Tsai James
Published: September 2013

It is obvious that luminance reduction coefficient standards do not satisfy a driver’s comfort and safety in an expressway tunnel threshold zone. In fact, the standards may impair a driver's vision and increase the probability of accidents. Smaller luminance reduction coefficients are economical but unsafe. The threshold zone lighting of existing and newly designed tunnels needs to be analyzed to prevent safety luminance problems. This paper provides a method, CRP, to evaluate drivers’ safety and comfort caused by tunnel luminance reduction coefficients, based on analyzing drivers' visual demands. It consists of field experiments to examine CRP and luminance reduction coefficient under different operating speeds in expressway tunnel threshold zones. A regression model is developed according to the comfort and safety threshold; this was based on changing the driver's rate of pupil adjustment by 20%, by which we can obtain the comfort and safety luminance reduction coefficient. The expressway tunnel threshold zone luminance reduction coefficient standard of 0.031 was determined at a speed of 60km/h. This is higher than the Chinese standard.
The Solution of Directed D-Axis Current for the Bearingless Induction Motors
Authors: Yu Yan Jun , Liu Xian Xing
Published: September 2013

The control of nonlinear decoupling between the electromagnetic torque and radial levitation force is the key of the stable suspend operation of bearingless induction motor. An optimized algorithm for stator flux oriented control with direct solution of d-axis current is proposed. This method overcomes the problems that the conventional stator flux oriented control which must work with decouple regulator and is influenced by time-delay of decouple regulator. The control of suspend model imports the feedback control of unilateral magnetic-force to reduce the errors about the delay and interference of system. The simulation results show that the motor has excellent dynamic performance and stability.
The Current Situation Analysis of Parking in Baotou Urban Center District and Countermeasures
Authors: Yu Jing Fei , Wang Nan Nan , Zhang Xin Jie
Published: September 2013

For parking problems of Baotou: shortage of parking spaces, the unreasonable parking layout, parking difficulty, random parking, and the paper describes the existence reason of parking problems in Baotou urban center district through the current situation analysis of the parking in Baotou urban center district. On this basis, the paper discusses several countermeasures to solve the parking problems of the central district.
A New Method on Calculation of Vessels Stopping Distance and Crash Stopping Distance
Authors: Ming Li , Liu Jing Xian , Yang Song
Published: September 2013

There are many factors affecting vessels stopping distance and crash stopping distance, and it is very complicated to calculate them accurately. At present there are several calculation methods about them, but all these methods have large error. Based on the research of the existing calculation methods, this paper simplifies vessel resistance and calculates vessels stopping distance and crash stopping distance accurately by means of physical and mathematical methods.
Research on Utilization Characteristic and Management Issue of Asphalt Pavement of Airfield Runway on Highway
Authors: Huang Wei Ye , Shi Bao Hua , Zhang Ya Men , Huang Bi Bin , Zhou Wei
Published: September 2013

According to advantages of airfield runway on highway, at first the building effect and significance are analyzed, and then the utilization characteristic of asphalt pavement of airfield runway on highway is discussed through the aspects of transit load type, wheel imprint transversal distribution, traffic volume and service requirement, etc, in combination with practical situation of prevailing of asphalt pavement in China. In order to provide reference to management and maintenance of asphalt pavement of highway-runway, and satisfy the service requirement of vehicle and airplane, related discussion issues are proposed, such as pavement evaluation index system, performance comprehensive evaluation, residual service life prediction, evaluation system software, external quality evaluation method, etc.
Thermal Management System Analysis of Underwater Vehicle Fuel Cell Propulsion Unit
Authors: Li Hua Feng , Wang Xiao Feng , Kong Xia Ming , Lao Xing Sheng
Published: September 2013

A lumped parameter model is developed to study thermal management system performance of underwater vehicle equipping large power proton exchange membrane fuel cell propulsion unit. Fuel cell voltage current characteristic and heat release characteristic are represented by models which take effect of cooling water temperature into considered. Fuel cell stack performance models are validated against experimental data. Cooperated with experimental based models of water pump and heat exchanger, thermal management system performance is analyzed while fuel cell stack fresh cooling water outlet temperature is set to be at a certain value. The results show that inlet seawater temperature variation has little effect on opening of regulating valve, but engine power output variation results in notably regulating valve opening fluctuation. Modeling results would be employed in design of a underwater vehicle 300kW fuel cell engine system..
Tourism Highway Traffic Demand Forecasting of Tourist Attractions: A Case Study of Xingkai Lake, China
Authors: Han Juan , Hu Xiao Wei , Wang Lei
Published: September 2013

The reasonably and accurately prediction of tourism highway traffic demand of tourist attractions is a key issue in regional tourist planning and road network optimization. Based on the analysis of influence factors, this paper presented a method to calculate tourist highway traffic demand of tourist attractions through the number of visiting tourism of the tourist attraction. Then we compared the predicted value with the actual survey value, and a case study of Xingkai Lake had been analyzed and attempted to validate the establishment model. The presented tourist highway traffic demand model can provide a reference for regional tourist planning and road network optimization.
Research on Assessment of Urban Transportation Low-Carbonization Development
Authors: Hua Hong , Xiong Yu Han
Published: September 2013

Five influence factors of urban transportation low-carbonization development are analyzed which includes low-carbon transportation planning, road network construction, green travel, energy utilization and transportation management. The assessment indicator system and the assessment method of urban transportation low-carbonization development are set up. A case of assessment in Chengyang District is studied.
3D Numerical Simulation of Current and Sediment Transport in Estuary and Coast
Authors: Zhang Xin Zhou , Dou Xi Ping , Zhao Xiao Dong , Wang Xiang Ming , Gao Xiang Yu
Published: September 2013

In estuarine and coastal area, due to the colligated function of tide, runoff, wind and wave, suspended sediment profile in main flow direction varies from the inland river. Thus, combined with massive data sets from experiments in flume and observations in field, the study on the profile of concentration of suspended sediment are carried out in the thesis. Finally, 3D numerical model of turbulent sediment is established in estuarine and coastal area to carry out a simulation research on current and sediment movement in Yangtze River estuary.
Research and Development of Unmanned Aviation Vehicle System for Disaster Countermeasures
Authors: Yamamoto Ikuo , Inagawa Naohiro , Tsuji Takunori , Otawa Takenari , Takimoto Takashi , Iwasaki Masaaki , Hiratsuka Tomokazu
Published: September 2013

The authors developed low cost unmanned helicopter, real time video data transmitting system and a new type flying robots. The effectiveness is confirmed by real field experiment tests. Hazard map for disaster countermeasures is made on the basis of data obtained by the aviation vehicle system. The hazard map is delivered directly to a smart phone and a tablet PC. Therefore residents can keep track of disaster information quickly and accurately.
Determination Analysis of the Torsion Beam Suspension FEA Model and Fatigue Strain Based on Road Test
Authors: Huang Miao Hua , Luo Huan , Yi Si Wu
Published: September 2013

Accurate FEA model of torsion beam suspension and its strain histories are keys to precisely predicting its fatigue life. A strain analysis method is presented, integrating FEA and neural network analysis. The displacement and force histories of the wheel center and strain histories of multiple measurement points on the suspension are measured from road durability test. Apply transient response analysis to determine the FEA model and obtain strain histories of the measurement points. Use a neural network method to obtain accurate additional load. By comparing analysis results and test data, the accurate strain response of torsion beam suspension can be gained
Experiment and Study of Light Truck Longitudinal Braking Friction Coefficient
Authors: Zhao Gui Fan , Qing Ke , Zhang Zhen , Wang Shen Si , Xiao Hong Yuan
Published: September 2013

The driving conditions of commercial trucks are very complex, therefore, the study of trucks longitudinal braking friction coefficient is difficult. Domestic research in this area is still in blank. The factors of light trucks longitudinal braking friction coefficient are researched, with the orthogonal experiment of different factors and levels. From the orthogonal experiment, how many main factors affect the longitudinal braking friction coefficient is acquired. After that, perform the experiment of longitudinal braking friction coefficient under the condition of single factor variable , such as, vehicle speed, load. From the results, variation tendency of every single factor variable is obtained.
Safety Evaluation of Freeway Alignment Case Analysis
Authors: Hu Jiang Bi , Chang Xiang Zheng , Cao Jian Ping
Published: September 2013

Variation of driver workload degree on freeway was analyzed in order to research safe and comfort of alignment and provide a new technical support for humanization road design. A total of 12 healthy adult drivers heart rate variability index and operating speed are tested on 77 sections of one mountainous freeway. According to the change law of different drivers workload degree on different alignment conditions,4 sections cant meet the expectations of the truck drivers safe and comfort. In addition, accident data is used to verify the dangerous sections. Research results can be applied to design road alignment that meets the driving expectations of different drivers.
Design of Freeway Traffic Block Multi-Dimensional Data Warehouse
Authors: He Lin , Chen Yan , Liu Lan Ying , Men Ning
Published: September 2013

Through analysis of large sample data of freeway traffic block event, the data source of freeway traffic block is found out and summarized. Based on that, this paper propose a national level, distributed, freeway traffic block multidimensional data warehouse (FTBMDW) , and present the concept model , logical model and physical models of the data warehouse. The purpose of the FTBMDW is to support inter-provincial and inter-regional freeway traffic block analysis with reliable data.
Study on Key Factors in Piston Transient Temperature Field
Authors: Liu You , Liu Jing Jing , Chen Xiao
Published: September 2013

By means of ANSYS, piston finite element model is constructed to attain transient numerical simulation and explore the characteristics of surface temperature. On the basis of experimental design, the correlation is analyzed between major boundary conditions and temperature of feature points, thus revealing the corresponding correlation of quantity. Transient calculation method is proved to be scientific and paves way to defining boundary conditions. And furthermore there forms a theoretical foundation for positioning test point in piston temperature field.
Study on Slag Corrosion of the Magnesia Lining during Ferrovanadium Smelting Process
Authors: Li Long , Ge Wen Sun , Chen Yong , Sun Zhao Hui
Published: September 2013

The V2O3 is used as raw material to smelt FeV80 alloy by means of electric aluminothermic process in the vanadium products factory of PanGang, resulting in serious corrosion of magnesia lining. In order to analyze the above issues, some lining samples were taken from the locations where the refractory contacts with molten slag after furnace cooling, and processed to conduct SEM analysis. The research results showed that the slag corrosion of magnesia lining proceeds mainly in form of dissolution, The solubility of MgO in molten slag increases from 3.3% to 41% with the increase of smelting temperature from 1900°C to 2200°C based on the phase diagram analysis. The corrosion rate of magnesia lining at temperature 2000°C, 2100°C, 2200°C are about 13, 22 and 33 times than that at temperature 1900°C, respectively. Therefore，to control the ferrovanadium processing temperature below 2000°C is conducive to prolong the service time of magnesia lining.
Multi-Objective Optimization and Parameter Tuning for Turbine PID Controller
Authors: Lin Yuan Sheng , Li Yong , Song Fei Fei , Teng Da Wei
Published: September 2013

The tuning of PID controller parameters is the most important task in PID design process. A new tuning method is presented for PID parameters, based on multi-objective optimization technique and multi-attribute decision making method. Three performances of a PID controller, i.e. the accurate set point tracking, disturbance attenuation and robust stability are studied simultaneously. These specifications are usually competitive and any acceptable solution requires a tradeoff among them. A hybrid approaches is proposed. In the first stage, a Non-dominated Sorting Genetic Algorithm II (NSGA II) is employed to approximate the set of Pareto solution through an evolutionary optimization process. In the subsequent stage, a multi-attribute decision making (MADM) approach is adopted to rank these solutions from best to worst and to determine the best solution in a deterministic environment with a single decision maker. The ranking of Pareto solution is based on entropy weight and TOPSIS method. A turbine PID design example is conducted to illustrate the analysis process in present study. The effectiveness of this universal framework is supported by the simulation results.
The Method of Selecting the Key Freight Transport Industries Based on Weaver-Thomas Index
Authors: Xu Xue Zhen , Liu Shi Duo
Published: September 2013

Regional freight transportation demand is an important basis for transportation planning. Because of the large number of industries, the survey of related industries for regional freight transportation demand is workload and complicated. Therefore, we can grasp the formation and distribution of regional freight transportation demand by analyzing the industries that can generate larger number of transportation demand.
The Major Problems Needed to be Resolved in the Development of Electric Vehicles at the Present Stage in China
Authors: Yang Yan Ping , Chen Yi Song , Wang Xiu Jie , Yin Ren Shu
Published: September 2013

In this paper, on the basis of extensive investigation of development status of electric vehicles in China, several major problems needed to be resolved have been pointed out and analyzed according to the current market and technical condition.
Chitosan/Cellulose Microfiltration Membranes for Endotoxin Removal
Authors: Wang Nan Nan , Wang Shi Jiang , Shen Tie Wei , Cao Yue Qiang , Ding Guan Gen , Wu Yi Min , Du Run Hong
Published: September 2013

The aim of this study is the removal of endotoxin from water using a positively charged microfiltration membrane. The membrane was prepared by crosslinking a chitosan (CS) coating layer with glutaraldehyde vapor on a cellulose (CA) microporous substrate. The positively charged CS/CA membrane showed promising removal efficiency of endotoxin at a high water flux.
Isolation and Identification of Thermophilic Protease Bacterium 0701 and its Protease Characterization
Authors: Liu Ying , An Jun Ying , Hu Xu Qiong , Xu Chun Hou
Published: September 2013

Soil was collected from Huguangyan of Zhanjiang city and regarded as separate material, It was screened thermophilic protease-producing bacteria though dilution flat, transparent circle and Folin method. Strain 0701 isolated was identificated by its morphological features, physiological and biochemical characteristics and 16s rRNA. This experiment also researched on the genetic stability of enzyme producing, and different temperature, pH influence on proteases activity. 25 high temperature-tolerance protease producing strains were isolated, which accounted for 28.1 % of all the isolated strains. Among them, strain 0701 proteases activity was 247 U/mL and it was far higher than that of proteases for other strains and the most optimum reaction temperature and pH of the proteases were 70oC and pH 7.0, respectively, and retained high enzyme activity within 50-80 oC, pH6.5-9.0. The strain 0703 still had the ability to produce protease after consecutive 4 generation, and was identified as Bacillus subtilis by morphological, physiological-biochemical characteristics and 16s rRNA.
The Relationship between the Micromeritic Properties of Mixture and Raw Materials: Microcrystalline Cellulose and Herba sarcandrae Extract
Authors: Liao Zheng Gen , Ming Liang Shan , Zhang Jing , Zhang Nan , Zhong Shao Jin , Wang Jie , Liang Xin Li , Zhao Guo Wei
Published: September 2013

Microcrystalline Cellulose andHerba Sarcandraewere used to study the properties and relationship of powders before and after blending. The theoretical values of the physical quantities of the binary mixture were calculated based on the random mixing theory, The measured values of particle size specific surface area, pore volume and angle of repose of binary mixture had larger values than that of theoretical calculations. Whereas, tapped density and bulk density had a smaller value. The results suggested that the mixing behavior was not a complete random, arbitrary or simple superposition of the operation for coarse and sticky particles. The mixing process would create novel particles and physical quantities of novel particles exist regular changes.
Separation and Determination of Active Components in Evodiae fructus  and its Pharmaceutical Preparations by Non-Aqueous Micellar Electrokinetic Chromatography
Authors: Zhao Wen Yan , Wu Yu Jiao , Wang Guo Yan , Chen An Jia
Published: September 2013

In this paper, an easy, economical and effective nonaqueous micellar electrokinetic capillary chromatography (NAMECC) method for the simultaneous determination of two bioactive components (evodiamine and rutaecarpine) in Evodiae Fructus and its pharmaceutical preparations was developed for the first time. After optimization of the separation conditions and concentration conditions, the two alkaloids can be separated by using a fused-silica capillary column (57 × 75 μm I.D.) with a running buffer of 140 mM sodium cholate (SC) in methanol and detected with a diode-array detector (228nm). The second-order derivative electropherograms were applied for resolving overlapping peaks in complicated preparations. Regression equations revealed good linear relationships (correlation coefficients 0.9969-0.9999) between peak heights in second-order derivative electropherograms and concentrations of the two analytes. The relative standard deviations (RSD) of the migration times and the peak height of the two constituents were less than 0.49% and 1.6%. The recoveries of two constituents ranged from 93.5 to 105.6%. The results indicated that baseline separation of the analytes was hard to be achieved in real samples sometimes and second-order derivative electropherograms was applicable for the resolving and analysis of overlapping peaks.
Antioxidative Activities of the Hydrolyzed Sasanquasaponins from the Defatted Seeds of Camellia oleifera Abel
Authors: Ye Yong , Xing Hai Ting , Chen Xue Lan
Published: September 2013

The purpose of this research is to isolate sasanquasaponin and its hydrolyzed products from the defatted seeds of C. oleifera and evaluate their antioxidative effects in vitro and in vivo. Their structures were analyzed by UV, MS, 1H NMR and 13C NMR spectra. Free radical scavenging activities in vitro were determined by DPPH and ABTS; antioxidative activities in vivo were assessed by MDA, SOD and GSH-Px levels in serum and brain tissue of mice after intragastric administration of the products at 50, 200 mg/kg/d for 30 days. Acid hydrolyzed product and sapogenin had stronger antioxidative activities than the sasanquasaponin. They eliminated DPPH and ABTS radicals, significantly (p<0.01) improved SOD and GSH-Px activity in blood, and decreased MDA content in brain, but sasanquasaponin and alkaline hydrolyzed product had no significant change (p>0.05). On the basis of molecular structure in sasanquasaponin, hydroxyl and tigloyl groups are helpful to free radical scavenging activity; smaller molecules and hydrophobic property are beneficial to their absorption and antioxidative effects in vivo. Acid hydrolyzed product and sapogenin are more valuable to protect body against damage from free radicals.
Surface-Enhanced Raman Spectroscopic Study of Calf Thymus DNA on Two Different Silver Colloids
Authors: Liao Yu Bo , Lai Zhao Sheng , Meng Yao Yong , Zhang Ping Li
Published: September 2013

Two different silver colloids were produced by the reduction of AgNO3using sodium citrate (SCAg colloid) or hydroxylamine hydrochloride (HHAg colloid) as reductant. A comparative study was made on SERS spectra (λexc=514.5 nm) of the calf thymus DNA on the two silver colloids in solution of 0.06mol/L NaCl, pH7.0. With the SCAg colloid, the bands at 732, 915, 1340, and 1448 cm-1for adenine, and 800, 1180, 1590, 1625 and 1651 cm-1for thymidine are dramatically enhanced. It shows that the DNA molecules can be oriented relatively perpendicularly to the SCAg colloidal surface via the N6H2, N7 of adenine and C2=O of thymine residues. While with the HHAg colloid, most of the in-plane modes of the bases are poorly enhanced, except for some weak bands or shoulders assigned to cytosine and guanine. Thus the DNA molecules is supposed to be adsorbed on the HHAg colloid surface in a tilted mode.
Microwave-Assisted Parallel Synthesis and Antioxidant Activity of Aryloxy-Acetyl Ferrocenes Derivatives
Authors: Wang Wen Bin , Liu Dan , Pi Dan Wei , Liao Quan Bin , Liu Ming Guo
Published: September 2013

Seven novel aryloxy-acetyl ferrocene derivatives were parallel synthesized under microwave irradiation conditions from chloroacetyl ferrocenes and substituted phenols with the aim of obtaining potential antioxidant agents. The target compounds were identified by IR, 1H NMR, MS and elemental analysis, and their antioxidant assays indicated that all the aryloxy-acetyl ferrocenes had certain effect on eliminating 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. Their antioxidation activity significantly improved when rising the temperature until the temperature was 35°C. The structure-activity relationship analysis showed the electron-donating substituted aryloxyl group could strengthen the radical scavenging abilities, while the electron-withdrawing effects would block antioxidant abilities.
Synthesis and Anti-Inflammatory Activity of 3-Aryloxylindolizine Derivatives via Sonogashira Coupling/5-endo-trig Cycloisomerization Domino Strategy
Authors: Wei Yong , Cao Cheng Qiao , Chen Jian Feng , Zou Kun , Deng Zhang Shuang , Huang Nian Yu
Published: September 2013

With the aim of obtaining potential IL-6 inhibitor for the treatment of rheumatoid arthritis, four 3-aryloxylindolizine derivatives were synthesized from the 2-bromopyridine and aryl propargyl ether through the Sonogashira coupling/5-endo-trigcycloisomerization domino strategy. These compounds were characterized by NMR, IR, EI-MS and elemental analysis. Their biological activities were evaluated by the bacterial lipopolysaccharide (LPS) stimulation of mouse cells on the RAW264.7 inflammation model. All the compounds revealed good anti-inflammatory activities with the inhibitions of 71~82% against IL-6 at 100 μM. The bioactive 3-aryloxylindolizines might be used as potential anti-inflammatory drugs.
Synthesis, Structure and Gastric H+/K+-ATPase Inhibitory Activities of Bisabolonalone Hydrazone Carboxamides
Authors: Jin Lei , Chen Lei , Luo Hua Jun , Guo Zhi Yong , Huang Nian Yu , Deng Wei Qiao
Published: September 2013

Five novel bisabolonalone hydrazone carboxamides were synthesized as potential anti-ulcer agents. Their structures were characterized by NMR, IR and ESI-MS. All of the compounds possessed the better H+/K+-ATPase inhibitory activity than the commercial omeprazole with the IC50 of 18~68 μM in vitro. These compounds could be potentially use for the treatment of ulcer related diseases.