bluuebunny/crossref_metadata_2025 huggingface dataset:
An Improved PAM Clustering Algorithm Based on Initial Clustering Centers
Authors: Zhang Li Sheng , Yang Mei Jie , Lei Da Jiang
Published: October 2011

This paper proposes a novel clustering algorithm with the steady initial center based on the PAM algorithm. As the PAM algorithm arbitrarily chooses the initial centers, this new algorithm improves the location of the initial center, which makes the initial choice much closer to the data distribution. It also overcomes the blindness of generating initial central points. The experimental results show that this algorithm is effective which performs better in classification efficiency and quality, and it also decreases the number of iterations.
Analysis and Design of a Wearable Robot for Lower-Limb Rehabilitation Training
Authors: Chu Yan , Shao Yan , Chen Liang
Published: October 2011

After studying the advantages and disadvantages of existing wearable lower limb rehabilitation training robot product performance, by establishing human movement control model and the quadratic approximation formula, we designed a kind of control high-precision of lower limb rehabilitation training robots. The robot can simulate the normal actions as sitting, standing and walking for patients to take rehabilitation training. The structure of it is simple and reliable. And it is easily to be manufactured. The robot provides an ideal device for lower limb rehabilitation training
Analysis of Control Strategy for Extended-Range Electric Vehicle
Authors: Min Hai Tao , Ye Dong Jin , Yu Yuan Bin
Published: October 2011

This paper introduced the structure of Extended-Range Electric Vehicles as well as its characteristics. Principle researches have been offered on the parameters matching of the power-train and main components. Operating modes and control strategies were discussed, especially the two control strategies of charge sustaining mode which is shown as load following strategy and engine optimal strategy, and the effects of both control strategies are simulated and analyzed. The results indicate that the load following strategy can obviously extend battery’s lifespan, but the engine optimal strategy can reduce fuel consumption and emission effectively.
Analysis of Game Theory on the Price of Supply Chain Based on Bertrand Model
Authors: Xia Lan , Song Ting Ting
Published: October 2011

As market competition intensifies, Price competition as the most common and effective way of market competition among operators is quite active. Used game theory, analysis price game and inter-enterprise competition by Bertrand model, and illustrated the importance of product differentiation and build the core competitiveness by case.
Application Framework of Manufacturing Enterprise Information System Based .NET Smart Client
Authors: Ren Dan , Ren Yuan , Fan Yang
Published: October 2011

It first reviews the characteristic of manufacturing enterprises. Then it discusses the features and advantages of .Net smart client technology. Based on analysis of the manufacturing enterprises information system requirements, a new application framework of multi-tier distributed system was proposed, the framework model and tier deployment strategy are also given. The proposed framework is easy to be deployed and expanded, it also can be intelligent installation and update, and supports occasionally connected users，and easy to be reused by information system. Next, it introduces a method of how to design and build smart client application use Microsoft Application Block; it can simplify the coding efficiently. Last, the key technologies are demonstrated.
Application of Fuzzy Neural Network in Ship Course Control
Authors: Hu Guan Shan , Zhou Ying Bing , Xiao Hai Rong
Published: October 2011

As the uncertainty of parameters and the random nature of disturbances that effect a ship’s course，one of the methods which can be used for designing a nonlinear ship course controller is the neural intelligent method. It is used here for designing a configuration of a nonlinear controller, which are then applied to ship course control. In the paper, we used fuzzy logic and neural network based on T-S model to design the controller. During the control design process, the structure of ship automatic steering and fuzzy neural network feedback controller were built. In order to enhance adaptive characteristics of the controller，the parameters of the network were optimized by a GA algorithm. The proposed course keeping method was tested in a simulation study involving a non-linear model of a ship. Simulation results show that the performance of the ship controller is valuable and easy to implement.
A High-Speed Railway Data Placement Strategy Based on Cloud Computing
Authors: Wang Han Ning , Xu Wei Xiang , Jia Chao Long
Published: October 2011

The application of high-speed railway data, which is an important component of China's transportation science data sharing, has embodied the typical characteristics of data-intensive computing. A reasonable and effective data placement strategy is needed to deploy and execute data-intensive applications in the cloud computing environment. Study results of current data placement approaches have been analyzed and compared in this paper. Combining the semi-definite programming algorithm with the dynamic interval mapping algorithm, a hierarchical structure data placement strategy is proposed. The semi-definite programming algorithm is suitable for the placement of files with various replications, ensuring that different replications of a file are placed on different storage devices. And the dynamic interval mapping algorithm could guarantee better self-adaptability of the data storage system. It has been proved both by theoretical analysis and experiment demonstration that a hierarchical data placement strategy could guarantee the self-adaptability, data reliability and high-speed data access for large-scale networks.
Distributed Coverage-Hole Repair Algorithm towards Nodes Failure in Wireless Sensor Networks
Authors: Xu Bao , Ju Yong Feng
Published: October 2011

In order to preserve the coverage and ensure the efficiency of Wireless Sensor Networks (WSNs), a distributed coverage-hole repair algorithm towards nodes failure is proposed in this paper. Every node has a energy threshold, if node’s energy is lower than its threshold, it sends a failure message to the nearest node and appoints it as the head node, the head node consideres all the neighbors of the failure node are preparatory boundary nodes at first, then judges every preparatory boundary nodes whether be a non-boundary node through the intersection angle with the failure node. In the last, the head node activates the redundant node within the sensing range of failure node which has the most boundary nodes as neighbor nodes. Analyzes and simulation on Matlab platform indicate that this algorithm has a low time complexity and the repair efficiency has a grate relation with node density and node sensing radius.
Dynamic, Customized Workflow Using BDI Agent and Semantic Web Service
Authors: Liu Chih Hao , Chen Jason Jen Yen
Published: October 2011

As the Web gradually evolves into the semantic web, the World Wide Web consortium (W3C) recommends that web ontology language (OWL) be used to encode semantic information content over the Web. Semantic web is an essential infrastructure to enhance Web to obtain better integration of information and intelligent use of web resources. Moreover, a web service is annotated by web ontology language for service (OWL-S) to form a semantic web service that, however, is a static description. The OWL-S based semantic web services thus are reactively invoked by users. How to dynamically coordinate, composite, or discover the services is an important issue.
Imprecise Ontology Merging Framework Design
Authors: Li Guan Yu , Zhao Yan , Li Hai Yan
Published: October 2011

Precision is selected unwillingly by human being when dealing with imprecise objects because of the limitation of human cognitive ability, which deviates from the substance of the processed object when it gets the feasible way of solution. Nowadays, in terms of the research in the Ontology and the Semantic Web, the time for the transformation from the “precise phase” to the “imprecise phase” is ripe. The interoperability among ontologies is seriously blocked by the heterogeneity of ontologies constructed under distributed environment. In this case, Ontology merging in the same domain is the most effective method to solve ontology heterogeneity. Firstly, the improved fuzziness and the R-improved roughness are respectively defined and verified as the more efficient measure way for the fuzziness and roughness. Secondly, a composite appraisal method of fuzzy-rough relevancy in combination of the fuzzy set theory and the rough set theory is proposed, which can serve as the basis of the inquiry and reasoning of the imprecise ontology, the transformation reference of the fuzzy roughness set or the rough fuzziness set. Lastly, by employing semantic bridge generator and conflict processor, a novel multiple-mapping-based imprecise ontology merging framework is proposed. The example verification reveals that both the imprecise ontology merging efficiency can be improved and the merging source imprecise ontologies into object imprecise ontology can be done automatically under the semantic web environment.
Research of a Driving Equipment for Aero-Engine Rotor Based on FPGA
Authors: Wen Li Min , Wen Chang Bao , Li Yan Ming
Published: October 2011

The positioning accuracy can bring a great impact on inspecting defect for Aero-engine blade. The high or low pressure rotor of engine is generally driven by manual when blade’s defect is inspected. Frequently，False detection and missed happens due to match failure between two persons. Adopting a high-resolution, high-accuracy algorithm based on FPGA to design automotive equipment for high or low rotor . The Frequency range to step motor is 1Hz / s to 65536Hz / s, resolution is 1Hz,and positioning accuracy for blade can be up to 1mm.Resolving the questions of missing detectable rates made by manual during inspection in the paper, and increasing efficiency for inspection and the reliability of the experimental result. Experiment results show that this equipment can meet the challenge of the high-accuracy regulating speed for blade’s inspection.
Research on Key Techniques of Games Based on Symbian Platform
Authors: Zhu Dong Dong , He Jia Ming , Shi Zhi Hui
Published: October 2011

With the rapid increase of mobile phone, people’s requirements of entertainment have become higher and higher, the demand for the game is the most prominent. Game development based on Symbian platform has higher efficient implementation and powerful function. There is the problem of screen flickering for most games written by beginners. By introducing the problems that encountered in the development of Sudoku game, showing new methods that how to use double buffering and direct screen access technology to solve the problem of screen flashes that exist in the game interface, as a result the fluency of the game’s interface has been greatly improved.
Research on License Plate Tracking and Detection Based on Optical Flow
Authors: Xu Hong Ke , Cai Chao , Chen Hao , Fang Jian Wu , Li Shu Guang
Published: October 2011

Aiming at regulating the toll evasion behaviors in highway weight charges and reducing charge disputes caused by jumping, this article studied the algorithm that tracks vehicle beating when it is passing the scale. Based on license plate location, vehicle movement could be characterized by tracking the plate centroid using Lucas-Kanade optical flow algorithm. The optical flow vector of the centroid was calculated frame by frame, which could be used for drawing trajectory of centroid coordinates, and calculating beating parameters. In order to expand the detection range and adaptability of the algorithm, through calculating optical flow hierarchically combined with Gaussian pyramid, then tracking centroid from high lever to low in the image pyramid, it could achieve the capture of the vehicle' fast moving. Through experiments, trajectory reflected vehicle beating information well, which provides a strong evidence means for levy problem of the highway weight charges.
Research on Vehicle Fuel Consumption Measuring System Based on Radio Frequency Communication Technology
Authors: Jiang Yin Ping , Liu Shan , Yang Yun Hua
Published: October 2011

At present, the energy crisis is increasingly serious. Energy-saving becomes a practical issues faced by all fields in the life. Considering this, the paper presents a new vehicle consumption measuring system based on intelligent handling and humane design under the promise of accurate measurement as well as low cost. In addition, the use of radio frequency communication technology makes precise measurement of instant and accumulative fuel consumption come true in any working hours. Field experiment results show that the vehicle fuel consumption measuring system has character of facilitate operation, low cost, advanced and reliable measurement method and high accuracy (within 1.5%). It can improve greatly the production efficiency of the internal combustion machine and avoid effectively the waste phenomenon, and be prone to make further application widely.
Supply Chain Flexible Production Capacity Value Analysis -Based on the View of Real Options
Authors: Yang Long Hua , Zhang Dan Ning
Published: October 2011

The flagship firm in the supply chain integrates resources through SCM (Supply chain Management), optimizing the information flow，logistics and capital flow in the supply chain to obtain long-term competitive advantage and enable firm to enhance market response and competitive capacity. It has many abilities to get economy rent through implementation of SCM, flexible production capacity is one of those abilities. Based on the view of real options, this paper regarded this ability as a call option. Construct a model to analysis the value of flexible production capacity. Calculate the option value using Monte Carlo simulation，Matlab programming. Illustrate a numerical example and make a parameter sensitivity analysis.
Target Recognition Using Infrared Polarization Imaging System
Authors: Ding Na , Gao Jiao Bo , Wang Jun
Published: October 2011

In this paper, we developed an infrared polarization imaging system. The system is composed of imaging lens, IR polarizing filter, medium wave IR detector, and image acquisition system. The design scheme of implementing target recognition with IR polarization imaging system was presented, and the IR Images with polarization information have been acquired by this system. On the basis of Stokes parameters and polarization IR images processing, the images of linear Stokes parameters (I, Q, U), the image of degree of linear polarization (P image) and the image of angle of polarization (X image) could been obtained. The image of PUX fusion image could be achieved by the pseudo color fusion. The results of actual experiment and quantitative analysis data confirm that the target in the processed images obtained from IR polarization imaging system is much clear than that in the original IR image.
Numerical Simulation for Mechanical Behavior of Carbon Black Filler Particle Reinforced Rubber Matrix Composites
Authors: Li Qing , Yang Xiao Xiang
Published: October 2011

In this paper, the micromechanical finite element method based on Representative Volume Element has been applied to study and analyze the macro mechanical properties of the carbon black filled rubber composites by using two-dimensional plane stress simulations and three-dimensional axisymmetric simulations under uniaxial compression respectively. The dependence of the macroscopic stress-strain behavior and the effective elastic modulus of the composites, on particle shape, particle area/volume fraction and particle stiffness has been investigated and discussed. Additionally, the simulation results of the two-dimensional plane stress model and the three-dimensional axisymmetric model are evaluated and compared with the experimental data, which shows that the two-dimensional plane stress simulations generate poor predictions on the mechanical behavior of the carbon black particle reinforced rubber composites, while the three-dimensional axisymmetric simulations appear to give a better prediction.
Influence of Water Pipe Cooling on Thermal Stresses in Mass Concrete
Authors: Bai Xin Li , Wu Ze Yu , Ma Wen Liang , Wang Dan Fei
Published: October 2011

Temperature field and stress field of a concrete slab in a ship lock chamber are calculated, considering the influence of layered casting. And the influence of water pipe cooling at the early period of constructing, and at the period after constructing, sunshade, pre-cooled concrete etc are taken into account. The expression of finite difference method considering the effect of water pipe cooling is deducted for temperature analysis. Thermal stress calculation results show that the water pipe cooling at the mid-late period is a comparatively effective measure to reduce tensile stress of chamber mass concrete. And an effective temperature control measure is recommended in summer casting, which is that: sunshade + pre-cooled concrete + water pipe cooling (both at early period and at mid-late period). Mid-late period water pipe cooling must last for three months. Combined with other temperature control measures such as summer cover maintenance, winter cover preservation etc, the concrete cracks can be reduced, and the occurrence of large area run through cracks can be avoided.
Nonlinear Analytical Model of RC Shear-Critical Frame Elements
Authors: Zhang Yun Peng , Diao Bo , Ye Ying Hua
Published: October 2011

The beam-column element model for the nonlinear analysis of reinforced concrete frames is derived here. The transverse strains in stirrup direction are considered in the cross-sections. Analytical shape functions are used in the element formulation to eliminate the problem of shear locking. For the accurate consideration of shear effects, the constitutive models for the reinforced concrete in 2d stress state are adopted. Gauss integration method is used to integrate the resultant forces and stiffness. The analytical results of ultimate shear loads with different shear-span ratios show good agreement with experimental data.
Seismic Performance Evaluation of a Steel-Concrete Hybrid Frame-Tube High-Rise Building Structure
Authors: Jiang Huan Jun , Fu Bo , Liu Lao Er
Published: October 2011

Due to its unique advantages, the steel-concrete hybrid structure has been widely used in tall buildings around the world. In Mainland China it has been utilized as one of the most popular structural types for super tall buildings. In this study the seismic performance of a code-exceeding tall building with the hybrid frame-tube structure to be constructed in Beijing is evaluated by numerical analysis. The analytic model of the structure is established with the aid of PERFORM-3D program, and the nonlinear time history analysis is performed by inputting four sets of earthquake ground motions. The elastic dynamic characteristics, the global displacement responses, the performance levels and the deformation demand-to-capacity ratios of structural components under different levels of earthquakes are presented. Numerical analysis results indicate that the hybrid structure has good seismic performance.
Seismic Response Reduction of Cable-Stayed Bridge with Viscous Dampers
Authors: Qiu Wen Liang , Jiang Meng , Zhang Xing Bo
Published: October 2011

For floating system cable-stayed bridge, the longitudinal displacement of girder and moments of towers are very large when strong earthquake happens. The dampers installed between girder and towers in longitudinal direction can reduce efficiently displacement of the girder and moments of the towers induced by longitudinal seismic waves. Using spatial finite element model and time history analysis method, the influences of design parameters of viscous damper on seismic responses of cable-stayed bridge are studied in detail. The results of study show that, with the damping constant increasing, the longitudinal displacement of girder and moment of tower decrease, and the forces of damper increase. With velocity exponent increasing, the longitudinal displacement of girder and moment of tower increase, and the force of damper decrease. So, when determining the design parameters of damper, the cost of dampers, difficulty of construction and seismic reduction effects should be considered together.
Evaluating Shakedown for Structures Based on the Element Bearing-Ratio
Authors: Zhang Wei , Yang Lu Feng , Fu Chuan Xiong , Wang Jian
Published: October 2011

Based on Melan’s theorem, an improved numerical solution procedure for evaluating shakedown loads by non-linear superposition method is presented, and the relationship between the classical non-linear programming formulation of shakedown problem and the numerical method is disclosed. The stress term in classical optimization problem is replaced by the element bearing-ratio (EBR) in the procedure, and series of residual EBR fields can be generated by the D-value of the elastic-plastic EBR fields and the elastic EBR fields at every incremental loading step. The shakedown load is determined by performing the incremental non-linear static analysis when the yield criterion is arrived either by the elastic-plastic EBR fields or residual EBR fields. By introducing the EBR, the proposed procedure can be easily used to those complex structures with multi-material and complicated configuration. The procedure is described in detail and some numerical results, that show the efficiency and effectiveness of the proposed method, are reported and discussed.
3-D FEM Seepage Simulation of Channel with Drain Pipes
Authors: Li Zong Kun , Huang Yu Rong , Wang Jian You , Zi Qiang
Published: October 2011

In order to simulate the seepage field with drain pipes, the air element method is used in this paper. In this method, the pipe elements are regarded as a kind of material with high permeability coefficient and an equivalent hydraulic conductivity is assigned to them. Thus these pipe elements can be included in the conventional seepage calculation as other common elements. Moreover, the difficulty of giving water head boundary to the inner surface of pipes directly is avoided. According to the seepage calculation of the channel with large number of drain pipes in Huangyou part of the middle line in South-to-North water transfer project, the results show that, with drainage-piping, the pore water pressure in channel foundation is reduced significantly.
Numerical Analysis for Unsaturated Water Movement in Soil of Changing Bulk Density
Authors: Cai Song Bai , Shao Ming An , Lu Dian Qing , Fu Xiao Li , Li Da Zhi
Published: October 2011

With the rapid development of computers and computing techniques, some increasingly complicated computational problems in engineering and science deserve further review and improvement. This work calculated the solution to the problem of Richards partial differential equation with its corresponding initial and boundary condition for one-dimensional unsaturated water movement in soil with changing bulk density by adopting an explicit backward difference method, an implicit forward difference method and an implicit central difference method. Therefore, a temporal-spatial distribution of water content in the process of filtration, evaporation and redistribution of water moisture within the soil column was obtained. Then the computational results were compared and verified, alternatively, by three methods, with a semi-analytical solution. This indicates the methods presented are of high validity, efficiency and accuracy. These methods were used for the first time for the modelling and prediction of the complicated water movement process in soil of changing bulk density. The computations show that the explicit method features a simpler formulation and more capability for complicated modelling, and the authors strongly recommend this method for application in time-related problems. In addition, this work innovatively developed a combination procedure of an implicit difference method and iterative solution method of a large set of linear algebraic equations. It not only avoids solving a large set of linear algebraic equations but also is able to be applied to complicated modelling of soil moisture profiles. Finally, the numerical methods and the technical skills presented in this work can be generalised for two-dimensional or three-dimensional soil moisture movement and more complicated water movement modeling.
The Coincident Relationships between the Qehan Lake Area Fluctuation and the Climate Change in the Nearly 40 Years
Authors: Chun Xi , Zhang Mei Jie , Liu Mei Ping
Published: October 2011

The objective of this study is to analyse the climate changing patterns chronologically for exposing the coincident relationships between the lake area fluctuation and the climate change in Qehan lake of Abaga county of Inner Mongolia. The results show that there’s highly interrelation between the changes of the lake area and the climatic factors here, the annual average temperature and annual evaporation are negatively interrelate to the lake area fluctuation, and the annual precipitation interrelate to it is positive. The lake area has descended about 75 km2 during the nearly past 40 years. There were about two considerable lake expansions in 1973, 1998 through the generally lake area descending process.
A Study of the Atmospheric Weighting Mean Temperature in Northwest Plateau of China
Authors: Zhang Jing Jiang , Chu Yan Li , Zhong Ji Qin
Published: October 2011

The data from 11 meteorological radiosonde stations in 5 provinces including Shanxi, Shaanxi, Ningxia, Inner Mongolia and Hebei are divided into 9 different data collections which are used to deduce the linear regression models of atmospheric weighting mean temperature (Tm) for Ground-based GPS precipitable water vapor (PWV) retrieval. These 9 models, together with Bevis model, are used to retrieve the GPS PWV at station BGTY. In comparison with the correlations between the ground-based GPS PWV and radiosonde PWV at this station, the difference between these 10 different models of Tm is analyzed. The results show that the Bevis model of Tm can be used to retrieve the GPS PWV of the regions mentioned above. At the same time, the Tm model computed from the radiosonde measurements of specific regions and seasons can provide more accurate GPS PWV than the Bevis model.
Gabbro in Wanning, Hainan Island: LA-ICP-MS Chronometry and its Geological Significance
Authors: Tang Li Mei
Published: October 2011

Gabbro is mostly the result of partly melting from mantle rock, and its formation is usually related with extension tectonic, the research work on Triassic gabbro from Hainan island has important instruction significance to its tectonic background. System chronometry and geochemistry research on hornblende gabbro in Wanning area was made in this paper, and its tectonic significance is to be discussed. The LA-ICP-MS zircon U-Pb age dating result shows that the gabbro in Wanning area was formed in 241±1.7Ma. The major and trace elements characteristic shows that the rocks belong to alkaline series, enrichment in light REE (LREE/HREE＝7.22-8.5) and LILE Rb, Th, and Sr, Ba while depleted in HFSE Nb, Ta and Zr, Hf. The Wanning gabbro exhibits a narrow range of εNd(t) values (1.59-1.76), and a broad rang 87Sr/86Sr initial ratios(0.70633-0.70964). The tectonic background of Wanning gabbro is intracontinental extensional setting, and its geochemistry characteristic declare that there was an ancient ocean basin existed, and maybe one branch of the ancient eastern Tethys ocean. The formation age and tectonic setting declare that the ancient ocean basin was disappeared at least before 241Ma.
Study on the Impact of Tongluoshan Tunnel on Groundwater Environment Based on Hydrochemical Analysis
Authors: Liu Jian , Liu Dan
Published: October 2011

This study applies gray relation analysis method to make an estimate of the range that influenced by Tongluoshan tunnel construction on groundwater environment, using hydrochemical data of groundwater sampled from tunnel and wells as well as springs. Results calculated reveal that the gray relation grades varies from 0.48 to 0.89 with an average of 0.63 to 0.76, implying that the inflow from tunnel is closely related to the groundwater system which recharges the wells and springs. And an area about 3.5 square kilometers consists of rangeⅠand rangeⅡ, distributing mainly in the carbonate aquifer field around tunnel is inferred as the zone that might be influenced by Tongluoshan tunnel construction. So the wells and springs in these ranges may disappear if a good link existing between the tunnel and aquifers that recharges the wells and springs.
Valuate of Soil Conservation of Grassland Ecosystem with GIS and Remote Sensing Technology
Authors: Wang Rui Jie , Yang Lian Wei
Published: October 2011

In this study, we use d remote sensing and GIS technology to estimate the value of soil conservation. The Revised Universal Soil Loss Equation (RUSLE) was used to estimate soil erosion quantity. The total amount of soil conservation of grassland ecosystem was 79.25×105t/a in HulunBuir in 2006, the total value was 81.58×107yuan/a, in which the economic value of soil fertility conservation, reducing abandoned farmland and reducing silt accumulation were 80.39×107yuan/a, 0.694×107yuan/a and 0.50×107yuan/a respectively. For the different grassland types, lowland meadow was maximum, next was temperate meadow-steppe. Marsh was the minimum.
The Effect of Anisotropic Surface Tension on Directional Solidification in the Extremely Short Wave Region
Authors: Chen Ming Wen , Wang Xin Feng , Wang Yan Lin , Wang Zi Dong
Published: October 2011

The morphologicalstability of a planar interface with the inclusion of the anisotropic surface tension is studied. The dispersion relation is obtained by means of the multi-variable expansion method. The result shows that the morphological stability of the solidification system in the extremely short wave region depends on the undercooling. As the anisotropic surface tension parameter increases the perturbation growth rate of the interface increases and the solidification system in the extremely short-wave region tends to destabilize.
Experimental Resarch of Destruction of Leukemia Tumor Cells HL60 by QDs-CdTe-Based PDT Combined with Antibiotics In Vitro
Authors: Wang Jian , Chen Li , Jiang Fei , Xiong Jian Wen
Published: October 2011

Photodynamic therapy is a kind of new method of treatment for leukemia. In this thesis, we use the quantum dots CdTe as photosensitive drugs on photodynamic therapy study of leukemia with chemotherapy, in order to explore new methods. This thesis studied the Qds-PDT treatment based on CdTe on HL60 in vitro.And it also studied the effect of the inactivated leukemia HL60 tumor cells by the three antibiotics in vitro.What’s more, based on the selected quantum dot and the PDT reaction chamber, photodynamic therapy of inactivation tumor cells HL60 is carried out by using the new photosensitizer with chemotherapy in vitro.
Identification of Self-Assembly Products of L-Valine Mediated by Phosphorus Trichloride by ESI Mass Spcetrometry
Authors: Zhao Wen Jie , Yang Liu , Lu Kui
Published: October 2011

With the assistance of phosphorus trichloride, L-Valine (L-Val) was assembled into homopeptides and homocyclopeptides which were analyzed by electrospray ionization mass spectrometry (ESI-MS). On quenching with water or various alcohols, the reaction mixtures yielded the corresponding peptides or peptide esters and cyclopeptides, respectively. The formation of the products was proved by multistage electrospray ionization mass spectrometry (ESI-MS/MS).
Study on Influence Factors of Ammonia Oxidizing Bacterias Removing Nitrogen in Wastewater
Authors: Shan Ming Jun , Li Yang , Peng Wen Xia , Liu Hong Yu , Chen Xiang Qian
Published: October 2011

The large amount of nitrogen in the water environment had casued the serious deterioration of water environmental quality. Controlling the emissions of nitrogen from producing source to reduce the emission of nitrogenous effluent was an important step for water environment regulation. In this study, laboratory experiments were conducted under anaerobic conditions to translate the ammonia nitrogen and nitrite nitrogen into nitrogen by ammonia oxidizing bacterias. The wastewater used were from a coal liquifaction company of Yunnan in China. The experimenal conditions were controlled as that temperature was 35 °C, pH was 7.9 and hydraulic retention time was 24 h. The experimental results showed the Ammonia oxidizing bacterias had powerful capacity of denitrification from wastewater and removal efficiency of nitrogen is over 90 %.
Pilot Scale Study on Biological Nutrient Removal and Membrane Fouling Alleviation in Combined Membrane Bioreactor for Municipal Wastewater Treatment
Authors: Liu Shuo , Wang Ji Fu , Wang Bao Zhen , Wang Bing , Wan Wei
Published: October 2011

To solve the problem of eutrophication in receiving water, a novel Membrane Bioreactor (MBR) with combined configuration was designed for municipal wastewater treatment and reclamation. By dividing bioreactor into three zones, the combined MBR operated under anoxic, anaerobic and aerobic conditions. It provided optimum conditions for nitrification, denitrifying and phosphate accumulating bacterial growth which resulted in high biological nutrient removal rate directly. The operational performance of combined MBR pilot plant showed that it exhibited high nutrient removal rate on Chemical oxygen demand (CODcr), total nitrogen (TN) and total phosphorus (TP). The mean value of effluent CODcr, TN and TP removal rate was 90.63%, 63.05% and 60.51% respectively during 180 days of operation. In order to obtain stable membrane flux, the combined MBR packed with fibrous bio-film carrier and added diatomite. Furthermore, it could alleviate membrane fouling effectively. As a result, the combined MBR improved effluent water quality significantly and alleviated membrane fouling remarkably.
Investigation on the Precocity of Regenerated Seedlings from Micro Tom
Authors: Xu Yan , Jin Sheng Ta , Zhao Mei Ling , Shi Wei , Liao Qian Sheng , Chen Ji Shuang
Published: October 2011

Micro Tom is a novel breed model organism of Lycopersicon esculentum Mill. It has the a short life cycle and is dwarf and miniature. Owing to these characters, the utilization of Micro Tom can decrease the period of scientific research greatly and save time and space for breeding, so its application is more and more broad. In this paper, we successfully induced the regenerated seedlings from Micro Tom to bear fruits in advance by controlling and optimizing several external conditions such as the initial height of the regenerated seedlings, the culture medium, the photoperiod and the temperatures, etc. Before maturity induction, we firstly investigated the proper methods for plantlets regeneration and got a relative complete data. In the later investigation on precocity inducing we found that the optimum inducing culture medium is MS medium supplemented with 0.1 mg/L NAA and 0.5 mg/L IBA, the proper height of seedlings is 2.0-2.5 cm, the best photoperiod is 18-20h, and the most efficient culturing temperature is 22-26°C. In this way we can get regenerated seedlings from Micro Tom in an efficient way and make them precocity in vitro.
Experimental Study of Finding Best Way of Radiation Seeds with HVEF
Authors: Hang Jue , Chen Xin , Xiong Jian Ping
Published: October 2011

Norder to find the best high-voltage electrostatic radiation seed program, to select two different kinds of cucumbers, vegetables, paddy rice seeds, each seed be divided into 5 experimental groups, and be treated by high voltage electrostatic field (HVEF) at different field strength and time, and testing and statistics of the seeds vigour at germination stage. The results indicated that the greater the radiation field to same seed, the shorter radiation time is required, and vice versa. For each species, E•t tends to a constant (the constant is different in different species). Be proved by mathematical derivation that the HVEF radiation transport essentially energy to the seed, and then will be able to find the best way for HVEF radiation seeds. CLC number: S129 Document code: A.
Optimization of Overproducing S-Adenosyl-L-Methionine Saccharomyces Cerevisiae S-W55 Mutant Utilizing Unpolished Rice from Aging Paddy by Feeding L-Methionine
Authors: Wang Wen Jun
Published: October 2011

The medium and fed-batch fermentation by Saccharomyces cerevisiae S-W55 were optimized. The unpolished rice from aging paddy was used as major nutrient source to reduce the raw material cost of SAM fermentation. The unpolished rice saccharificate (URS) and yeast extract were employed as carbon source and nitrogen source, respectively. The dosages of URS and yeast extract in the medium compositions were optimized by response surface methodology (RSM). As a result, when the fermentation was carried out under the optimal conditions for URS (51.4 g/L) and yeast extract (4.74 g/L), the SAM yield reached 2.61 g/L. Some fed-batch processes by adding L-methionine (MET) were investigated. Adding MET into the fermentation broth at one time at the time of high cell density reaching 80 g/L could get better results with the optimal SAM concentration of 5.3 g/L and biomass yield of 89.1 g/L. By feeding MET into the fermentation broth at a feeding rate of 2 g/h for 5 hours at the time of high cell density reaching 80 g/L the optimal results were reached and the maximal SAM yield and biomass density were 5.82 g/L and 90.2 g/L，respectively.
Prediction of Cotton Ring Yarn Evenness Properties from Process Parameters by Using Artificial Neural Network and Multiple Regression Analysis
Authors: Zhao Bo
Published: October 2011

The artificial neural network and multiple regression models have been developed to predict the evenness of cotton ring yarn with process parameters such as front roller speed, spindle speed, nip gauge, back draft zone time and roving twist. The efficiencies of prediction of the two models have been experimentally verified, and the predicted evennesses of cotton ring yarns from both the models have been compared statistically. An attempt has been made to study the effect of process parameters on yarn evenness. The MSE and mean absolute error of ANN modelare lower than that of multiple regression model. The results show that the performances of prediction of ANN models are more accurate than those of multiple regression models.
Research on Lightning Monitoring System of Solar Photovoltaic Power Generation System
Authors: Li Shao Bo , Luo Wei Ping
Published: October 2011

Solar power system for its stable and reliable, easy to install, operate and maintain simple, has been more and more widely used. In the large-scale use of solar power generation equipment at the same time, due to its characteristics of the reasons for the installation of equipment from lightning over-voltage and increase the probability of damage, seriously endangering the safety of solar power generation system. Study of the solar system lightning delay.
Effect of NH4+-N and NO3--N Ratio on the Growth and Quality of Bunching Onion under High Temperature Stress
Authors: Sun Guang Wen , Jiang Cai Yong , Liu Hou Cheng , Song Shi Wei , Chen Ri Yuan
Published: October 2011

The effects of different NH4+-N to NO3--N ratio (NH4+ /NO3-) (0, 1/8, 1/4 and 1/2) on growth and quality of bunching onion (Allium fistulosum L. var. caespitosum Makino) under high temperature stress (34°C/26°C, day/night) were studied in growth chamber by hydroponics. The results showed that the growth and quality of bunching onion were affected by NH4+ /NO3-. Plant weight and height, leaf number per plant were the highest in the treatment which NH4+ /NO3- was 1/8, and those in treatment without NH4+-N were higher than in other 2 treatments. With the NH4+ /NO3- increasing, nitrate concentration in bunching onion decreased. The concentration of vitamin C was the highest in the treatment which NH4+ /NO3- was 1/8, while concentration of soluble sugar, soluble protein and allicin were the highest in the treatment which NH4+ /NO3-was 1/2. Thus the growth and quality of bunching onion were better in the NH4+ /NO3- range of 1/8 to 1/4.
Study on Heat Transfer Model of 2024 Aluminum Alloy under Static Magnetic Field
Authors: Cheng Chang Gui , Yu Le , Wan Wen Cheng , Liu Zhong Tian
Published: October 2011

The paper has established a two-dimensional non-steady-state heat transfer model for 2024 aluminum alloy solidification process under the static magnetic field. According to the measured temperature and the inverse heat transfer problem, the boundary conditions of model have been determined, the results show that the solidification rate and heat flux acting on the ingot surface increase with increasing of the static magnetic filed strength; when the static magnetic filed strength become stronger, the isotherm location will move towards the liquid pool center, and the temperature gradient in the liquid metal pool will increase.
Study on the Effect of Cover Thickness on Bond Behavior between Deformed Bar and Shale Ceramsite Concrete
Authors: Yang Jian Yu , Yu Jie , Wang Yan
Published: October 2011

In this paper, the effect of cover thickness on bond behavior between deformed bar and shale ceramsite concrete was analyzed by four groups of pull-out tests which with different cover thickness. And three reinforced concrete pull-out tests used for comparative analysis were prepared at the same time. We obtained a series of experimental data and based on these data a more accurate formula was summed up. This formula has a high value in guiding the practical project to choose the cover thickness.
Nitrogen Ligands on Gas-Phase Oxidation Carbonylation of Dimethyl Carbonate
Authors: Li Rui
Published: October 2011

The effects of nitrogen ligands as pyridine, methylpyridine, 2, 2'-bipyridine and ethylenediamine on the activity and stability of the CBAC supported copper catalyst were investigated. The catalytic activities prepared by nitrogen ligand pretreatment descended compared with the unpretreated support catalysts. This probably related to the disfavored effect of the coordination on the catalysts at the gas-solid reaction manner. The catalysts made by pyridine pretreatment and pore modified supports were superior to the catalysts of unmodified CBAC. Methanol conversion, DMC selectivity and the space-time-yield of DMC of the catalysts by HCl, pyridine pretreatment and pore modification were 28.3%, 97.3% and 165.3 g/(kg•h), respectively. Activity test of 30h showed that pyridine pretreatment can prevent the loss of the active component and enhance the stability of the catalysts.
Study on Mechanical Properties and Water Permeability of Recycled Aggregate Porous Concrete
Authors: Li Chang Yong , Nie Pin , Li Feng Lan
Published: October 2011

Experiments were conducted to study the mechanical properties and water permeability of recycled aggregate porous concrete. The orthogonal test was designed considering four parameters including water to cement ratio, cement content, grain series of recycled aggregate and aggregate to cement ratio, each parameter was set at three levels. Performances of porous concrete were measured such as cubic compressive strength, flexural strength, continuous porosity and water penetration coefficient. Test results are analyzed on the basis of orthogonal test method, the optimum proportions corresponding to every test parameters are given out. The ranges of every test parameters are also proposed. It provides a reference for constructing porous concrete roads by recycled aggregate made of old concrete from dismantled buildings.
The Structure and Antibacterial Activity of Taurine and its Magnesium Complex
Authors: Wang Li Hua
Published: October 2011

The block single-crystals of taurine were obtained, and its structure was determined by single-crystal X-ray diffraction. The single-crystal X-ray analysis of taurine reveals that the crystal belongs monoclinic, space group P2(1)/c with a = 0.52824(10) nm, b = 1.1647(8) nm, c = 0.79236(13) nm, ß = 94.0850(10). The magnesium complex with taurine has been synthesized in ethanol. The antibacterial assay of the Mg (II) complex was measureed using a modified version of the 2-fold serial dilution method. The results show that the complex shows considerable antibacterial activity against escherichia coli, bacillus subtilis and staphylococcus white.
Synthesis and Luminescent Properties of Mg (II) Complex Material with Quinaldine Acid
Authors: Wang Li Hua
Published: October 2011

A new green luminescent material Mg (L)2•H2O•CH3O (L = quinaldine acid) has been synthesized by the reaction of MgCl2•6H2O with quinaldine acid. The material was determined by X-ray single-crystal diffraction methods. The single-crystal X-ray analysis of Mg (II) complex reveals that the crystal belongs triclinic, space group P-1 with a = 0.71287(2) nm, b = 0.90375(3) nm, c = 1.08457(3) nm, α = 75.677(4), ß = 74.138(4), γ = 70.160(4). The luminescent properties of Mg (II) material were studied in solid and in organic solvents, respectively. The results show that the Mg (II) material emits green fluorescence.
Cloud Computing Model and REST APIs Implementation
Authors: Jiang Nan , Hu Yan Zhong
Published: October 2011

Cloud computing exposes software as a service, platform as a resource, and infrastructure as a service. The way of Web services work naturally makes it the system interface for software communication of a cloud computing architecture. And REST(REpresentational Status Transfer) philosophy is a better way to construct Web services since it is fundamental to the Web and can make full use of the features of the Web. We implement RESTful APIs for learning resource cloud, and the benefits of an Ajax(Asynchronous JavaScript and XML) Web service client to the REST APIs are discussed.
Removal of Uranium (VI) from Aqueous Solution by Dry Chitosan Powder
Authors: Yi Zheng Ji , Li Jun Hua
Published: October 2011

This study investigated the likelihood of chitosan powder as a novel type of adsorbent, for U(VI) removal from wastewater. Batch experiments were performed to explore the effect of pH, sorption time, sorption temperature, chitosan dosage on U(VI) adsorption to chitosan powder. The results suggest that the accumulation process was highly pH dependent with pH changing from 2.0 to 7.0. An initial solution pH of 5.0 was most favorable for removal. Over the temperature range from 20 C to 70 C, 30 C was the optimum temperature for the U(VI) adsorption. The U(VI) uptake was rapid within 30 min and equilibrium was reached at 60 min. The U(VI) removal efficiency increased concomitantly with increasing chitosan dosage, while the adsorption capacity decreased. The chitosan had an observed U(VI) adsorption capacity of ca. 175 mg/g dry weight of chitosan. The present results implied that chitosan can be used as a sorbent for an effective removal of U(VI) from wastewater.
Research on Multi-Agents Based Distributed Data Integration
Authors: Liu Jie , Zhou Chuan Sheng
Published: October 2011

Today, data with hidden knowledge drives almost every activity in business and enterprises, etc. Computer technology has been successfully solved the problems with data storage, query, usability and transmission. But how to integrate all these huge distributed and heterogeneous data together for high level applications is still a critical problem. With research on the software bus and multi-agents technologies, it illustrates multi-agents based design architecture for data integration
Study on the Measurement of U-238 Neutron Yield Base on the Fission Chamber
Authors: Ai Ju Mei , Wang Qiang
Published: October 2011

This paper discusses a variety of fission neutron yield measurement method, a D-T / D-D neutron yield monitoring of U-238 fission ionization chamber measuring system, the application of spontaneous decay of U-238 α-particles for initial debugging of the system. At different voltage on the α-particle energy spectrum and α particle counts were measured, given the U-238 fission chamber curve to determine the U-238 fission chamber measurement system the best operating parameters.