bluuebunny/crossref_metadata_2025 huggingface dataset:
The Optimization of the Structure of Bulk Chemical Hull Based on MSC.Patran/Nastran
Authors: Wu Hao Wei , Pang Yong Jie , Li Ye
Published: September 2011

The optimization of the structure of bulk chemical hull (BCH) is derived by the finite element modeling (FEM) which is obtained by Patran and Nastran. In this paper, first of all, a new type of ship, BCH, is introduced. Then, the optimal scenario in theory is indicated by researching the transverse section of cargo holds of an ordinary BCH. And the FEM of the cargo holds of this ship is analysed, including the modeling, the load and the figures of stress and strain. The final conclusion would be obtained by comparing of the results which could verify the assumption forenamed. The simplification of the design is contributed by the new concepts and powerful capabilities of modeling of Patran and Nastran which improved the efficiency of ship designers.
Accelerated Test Method for Cement Strength Based on the Weighted Maturity Theory
Authors: Luo Qi Ling , Wang Wei Lun
Published: September 2011

In this paper, a new accelerated test method according to the influence of cement temperature and curing age is developed to detect the 28-day cement strength by using the standard test equipment based on weighted maturity theory. The results show the new method can accurately predict 28-day cement strength, which the mean of (predicted value) / (measured strength) is 0.98 and the COV. is 5.95%.
Effect of Heat-Reflective Insulation Coating on Exterior Walls of Building Energy Consumption in Summer
Authors: He Chao , Guo Wei Lin , Huang Yi Yun
Published: September 2011

To discuss the effect of energy saving of heat-reflective insulation coating on exterior walls of building, the wall temperature change of two test rooms with heat insulation or not in Hangzhou has been monitored in summer, and the heat flux data of east, south and west walls were analyzed. The results indicate that the temperature of outside wall surface with the heat reflective insulation coating is reduced effectively, and the maximum temperature change was about 9, 10°C. There is a positive proportional between the mean daily air temperature and heat gain that the heat gain increases with the mean daily air temperature. By calculating, the higher the air temperature, the more the cooling effect of coating in summer. But the higher the mean daily temperature do not mean that the more heat gain in summer. The result shows the energy saving effect of the heat insulation coating on building wall was very obvious in summer in Hangzhou.
The Experimental Investigation of Slab Participation in Flexural Behavior of Beams under Two-Way Loading
Authors: Gao Deng Li , Li Zhen Bao , Wang Guo Feng , Li Jian Cheng
Published: September 2011

The paper designed three joints namely beam-column joint of reinforced concrete frame without slab and two beam-column joints of reinforced concrete frame with slab, using different loading methods (one direction and two directions) to experiment. The paper studied failure behavior, load-carrying capacity, and slab participation in flexural behavior of beam under different loading modes. Experiment shows that for the joints with slab, flexural capacity at end of the beam under two direction loads than one direction loads lows by about 10%; under one direction load, effective flange width of slab should be taken 8 times thickness, under two direction loads, effective flange width of slab should be taken 10 times thickness.
Structural Dynamic Response Monitoring of Power Transmission Tower
Authors: Xia Kai Quan , Liu Xue Wu , Liu Yun
Published: September 2011

In order to study the dynamic response of power transmission lines under mechanical fault, the structural dynamic response monitoring indexes based on the requirement of field measurement were determined according to the structural characteristics of steel towers. The monitoring program was put forward in terms of the monitoring principle and basis of the sensors. The vibration characteristic, dynamic alignment and stress/strain are chosen to be the monitoring indexes. Considering the synchronization function of GPS system, the three monitoring indexes of the large span high voltage tower can be simultaneously monitored by using vibration sensor, GPS and strain sensor. The monitoring scheme can provide the theoretical base for the establishment of early warning system and the collection of dynamic response of steel tower during line break or tower collapse.
The Design of Crops Remote Sensing Monitoring System Based on Supermap Objects
Authors: Chang Bo Xue , Chen Yi , Huang Jing Yue
Published: September 2011

The remote sensing monitoring system, which uses GIS technique, is mainly discussed in this paper. It takes SuperMap Objects as development platform and Visual C++ as the secondary development tools, with MYSQL for the relational database, to design the main interface. This system basically complete data entry editing, mapping, information browsing query, spatial analysis and information statistic, data maintenance and output. this system will provide better digital platform for resource reasonable exploitation and scientific management．
Research on the Least Squares Method in Error Compensation on RSSI Ranging
Authors: Ling Wei Xin , Gao Jing Min , Li Chun Yun
Published: September 2011

This paper describes error compensation using least square method in wireless communications networks. The received data use the Gaussian filter to avoid interference，then use least square to compensate the error. ZigBee sensor network is constructed to verify the proposed algorithm. The experiment has been taken to test the accuracy after error compensation. The result shows the method is available for improving accuracy.
Study on Prediction of Gas Balance Schedule in Steel Plant
Authors: Lou Guo Huan , Shang Xiu Jun , Li Shu Jie
Published: September 2011

According to the demand of gas schedule management in the steel plant, Kirchhoff law in the power grid is used to build virtual network model for gas pipe network. Applying Newton-lafusen method, by solving nonlinear equations, the gas flow and pressure drop on the measurement points in the network are calculated. These data are compared with the real-time data in the database to monitor the operation status of entire network. When the production plans are changed, the schedule instruction are input to simulation calculation module. By analysing the operation status of entire network, after forecast instructions are issued, to adjust the forecast scheduling instructions.
Effect of the Randomness of the Relative Humidity on the Phenomenon of Carbonation of the Reinforced Concrete
Authors: Badaoui A. , Badaoui M. , Kharchi F.
Published: September 2011

This paper deals with shows the randomness effect of the relative humidity on the carbonation phenomenon of the reinforced concrete. This analysis concentrates on the evaluation of carbonation depth (Xc) of the reinforced concrete from a probabilistic analysis. Monte Carlo simulations are realized under the assumption that the relative humidity at the surface of the concrete is random variables with a lognormal probability distribution.
Influence of Shape of Region of Interest on the Architectural Parameters in Micro CT Image Analysis
Authors: Yan Ya Bo , Wang Jun , Qi Wei , Zhang Yang , Lei Wei
Published: September 2011

To study whether the architectural parameters are sensitive to the shape of volume of interests in micro-CT scanning, six human C5 body samples were scanned by micro-CT. Cubic and cylindrical volumes of interests were acquired as the length of cubic samples was being changed continually. The nonlinear curve fitting method was employed to explore the correlation between the parameters and the volume of interests. The selected morphological indices showed a significantly variable tendency for the lengths of cubic and cylindrical regions of interests, except the Tb.Th and BS/BV. The Dunnett-t tests were performed to compare the architectural parameters of different region of interests against that of control group. There was no significant difference observed between the architectural parameters from cubic region of interests and that from the cylindrical region of interests.
Comparison of Auto and Manual Integration for Peptidomics Data Based on High Performance Liquid Chromatography Coupled with Mass Spectrometry
Authors: Fang Hai Yan , Zhang Guo Ping , Gao Feng , Zhao Xiao Ping , Shen Peng , Wang Shu Fang
Published: September 2011

A growing number of literatures appealed the necessity to develop methods of data processing for peptidome profiling and analysis. Although some methods had been established, many of them focused on the development and application of auto integration softwares. In this work, we paid attention to comparison of auto integration by software and manual integration for peptidomics data based on high performance liquid chromatography coupled with mass spectrometry (HPLC-MS). Two data processing procedures, auto integration by XCMS and manual integration, were applied in processing of peptidomics data based on HPLC-MS from cerebral infarction and breast cancer patients blood samples, respectively. And, it was found that almost all peaks contained in chromatograms could be picked out by XCMS, but the areas of these peaks were greatly different from those given by manual integration. Furthermore, t-test (2-tailed) results of the two data processing procedures were also different and different potential biomarkers were obtained. The results of this work will provide helpful reference for data processing of peptidomics research.
Improvement of Shake Flask Fermentation Conditions for the Pseudomonas Strain N1
Authors: Zhang Wen Yi , Chen Rong , Lu Li Qiao , Xu Xia , Wu Suo Hua
Published: September 2011

To improve the yield of the Pseudomonas strain N1 in the fermentation culture medium screened from the biofilm of BAF reactor, the optimal shake flask fermentation conditions for Pseudomonas N1 were determined by single factor test and orthogonal test. The composition of optimal fermentation culture medium was as follows: nitrate of potash of 4 g/L, sodium succinate of 26.1 g/L, KH2PO4 of 4.0 g/L, MgSO4·7H2O of 1 g/L, KCl of 1 g/L. The cell concen- tration could reach 9.08 g/L under the conditions. Fermentation was performed for 36h in a 250ml shake flask containing 70mL medium at 1% inoculums volume and initial pH value 7.0. The cell concentration could reach 12.86 g/L which was 2.5 fold higher than that under the original conditions. Simultaneous nitrification and denitrification could be achieved to alleviate the pollution of nitrogen in the wastewater by adding the microbial inoculums into the common aerobic nitrifica- tion sludge.
Theoretical Study on the Transport through a Quantum Dots Array with a Side Quantum Dot
Authors: Yin Hai Tao , Liu Xiao Jie , Wan Wei Long , Yao Cheng Bao , Bai Li Na , Li Hua , Yin Yong Qi
Published: September 2011

We studied transport properties through a noninteracting quantum dots array with a side quantum dot employing the equation of motion method and Green function technique. The linear conductance has been calculated numerically. It is shown that an antiresonance always pinned at the energy level of side quantum dot. The conductance develops Fano line shape when the side quantum dot level is not aligned with that of the quantum dots in the array due to quantum interference through different channels.
GH002: A Novel and Potent Agents for Elevating HDL-Cholesterol
Authors: Lei Guo
Published: September 2011

The aim of this study was to evaluate whether the positive effect of GH002 on high-density lipoprotein (HDL) cholesterolin vitroandin vivo. In vitro assay, effects of GH002 on apolipoprotein (apo) A-I was studied using stable-transfected HepG2 cells with recombinant vector including apoA-I promoter; Effects of GH002 on apoA-I, apoA-II and apoC-III production were determined using HepG2 cells.In vivoassay, Effects of GH002 on lipid profile were investigated in hyperlipidemic rats. The results showed that GH002 can effectively activate apoA-I promoter, enhance apoA-I and apoA-II secretionin vitro, whereas reduce apoC-III production significantly. Furthermore, afterin vivostudy that the hyperlipidemic rats were treated with GH002, HDL-cholesterol levels were increased significantly (P<0.01) at 2 weeks (100 mg/kg, 28.8%) and 3 weeks (30mg/kg, 19.8% and 100mg/kg, 36.4%, respectively) compared with control group. Triglyceride levels were reduced significantly at 2 and 3 weeks (19.5%,P<0.05 and 28.1%,P<0.01 respectively). Total cholesterol levels also were reduced at 3 weeks (19.1%,P<0.05) after 100mg/kg GH002 administration, but GH002 didn’t increase the ratio of liver/body weight compared with the control group at the end of the experiments. It is therefore reasonable to assume that GH002 is an effectively HDL-cholesterol enhancer by regulating apoA-I gene expression, consequently enhancing apoA-I, apoA-II secretion and reducing apoC-III production.
Estimation of the Temperature-Dependent Thermal Conductivity of Multi-Phase Materials
Authors: Zhang Hai Feng , Li Peng Xin , He Li Qun
Published: September 2011

Two Models for Estimating the Effective Thermal Conductivity (kE) of Multi-Phase Materials Are Comparatively Investigated. the First Model Is the Effective Medium Approximation (EMA), which Is Based on the Extension of the Percolation Theory. the Second Is the Randomly Mixed Model (RMM), a Numerical Method in which All Components Are Seen as Cubech_cubecucube in Shape and Are Randomly Dispersed inside the Space. Two Models Can Be Directly Applied to Multi-Phase Media without Empirical Parameters. Compared with Experimental Data of Food Materials in the Literature, Two Models both Give Good Estimations of the Temperature-Dependent KE.
Research on Temperature Compensation for Long-Period Fiber Grating with Strain Property
Authors: Hou Zhi Wei , Wang Y. , Zhou B.
Published: September 2011

In this paper, we demonstrate an effective method to compensate the temperature effect of long period fiber grating (LPFG). First it is found that the resonant wavelength of LPFG showes a right shift when the temperature increases while it has an opposite shift when the applied strain increases. On the basis of the characteristic, plexiglass is used to compensate the shift of the resonant wavelength induced by the tempera-ture change. The temperature characteristic of compensated LPFG has been performed. And the compensa-tion experimental result shows the temperature sensitivity of the resonance wavelength of LPFG is reduced from 55.71pm/°C to 3.7pm/°C. It is found that the method to compensate temperature is effective and prac-tical.
Research on Strengthening Decomposition of Organic Nitrogen by Ammonibacteria in the Faber Cymbidium Plant Floating Island
Authors: Zhang Wen Yi , Chen Rong , Zhao Ting Ting , Fang Pei Cheng , Wu Suo Hua
Published: September 2011

Owing to the characteristics of the effluent with high concentration of ammonia nitrogen and low removal rate in the most artificial plants floating islands, two strains A1, A2 with high-efficiency ammonification screened from the laboratory were selected to use for enhancing decomposition capability of organic nitrogen in the plants floating island in order to improve nitrogen removal. The result showed that the decomposition rate of organic nitrogen by strains A1, A2 were 81.80% and 72.68% respectively, at the same time, decomposition equation was in line with zero order degradation reaction. Moreover, decomposition rates were VA1=0.8310mg/L•h and VA2=0.7619mg/L•h. The simulated ecosystem of sewage treatment was constructed by faber cymbidium (evergreen plant) plant floating island, and then the decomposition reaction of organic nitrogen met first-order kinetic equation in which k was 0.0752. If the strain was put into the previous simulated ecosystem, hydraulic retention time was shortened greatly and the degradation speed of ammonia nitrogen could be accelerated by cooperating action between amonifying bacteria and plant floating island. Furthermore, the ammonia nitrogen of the effluent could meet first discharge demand of integrated wastewater discharge standard (GB8978-1996) after 48h.
The Effect of Airflow Patterns on the Purification Efficiency of the Operating Room
Authors: Xing Jin Cheng , Wang Yun Ping , Ling Ji Hong , Li Yong Pan , Ji Yun Zhe
Published: September 2011

There are two unidirectional patterns in OR: horizontal unidirectional airflow and vertical unidirectional airflow. In order to compare their purification effect, computational fluid dynamics (CFD) was applied to simulate the two airflow patterns and the results are as following: Firstly, the number of the particles that hit the surgical key areas in the case of the horizontal unidirectional airflow is obviously less than that in the case of the vertical unidirectional airflow in the condition of the same air volume. Secondly, the number of the particles that hit the incisions will be satisfactory at a velocity of 0.25~0.3m/s in the case of the vertical unidirectional airflow while a velocity of 0.28~0.37m∕s in the case of the horizontal unidirectional airflow. Thirdly, the number of indoor residual particles in the case of the horizontal airflow is obviously less than that in the case of the vertical airflow in the case of the same air volume.
Kinetic Study on Phosphorus Adsorption, Phosphorus Desorption, Nitrification, and Denitrification by Using Mineralized Refuse
Authors: Li Ding Long , Tian Jing Si , Zhang Hou Hu , Zhang Yi Min , Gao Yue Xiang
Published: September 2011

The mineralized refuse has a well particle size distribution and is similar asirregularly polyhedron with the high contents of Fe, Al, and Ca, which might be thephosphorus pool. The absorption and desorption of phosphorus, nitrification, and denitrification in the mineralized refuse and clay has been investigated by using batch incubation, respectively. The variation of phosphorous adsorption in the mineralized refuse and clay is fitted the Langmuir isotherm equation. The maximum phosphorus adsorption capacity in the mineralized refuse calculated based on the Langmuir isotherm equation is 2914 mg kg-1. Both the maximum adsorption capacity and adsorption rate of phosphorus in the mineralized refuse are over 2.0-fold more than that of the clay. The desorption rate of phosphorus in the mineralized refuse is only about 30%. NH4+-N contents in the mineralized refuse samples fell from 129 mg N kg-1 to 83.0 mg N kg-1 within the first 24 h during the nitrification process. Accordingly, the NO3--N content in the mineralized increased from 137 mg N kg-1 to 170 mg N kg-1. While the decrease of NH4+-N contents and the increase of NO3--N contents in the clay was only 1/2 and 1/6 as large as in the mineralized refuse, respectively. During the denitrification process, the K-value of the fitted zero-order kinetics for NO3--N denitrification in the mineralized refuse was 6.5-fold higher than in the clay.
An Improved Algorithm for Medical Image Fusion Based on Pulse Coupled Neural Networks
Authors: Wang Ma Hua
Published: September 2011

For the sake of overcoming the shortage of transitional region and marginal area information loss, especially lost texture information resulting from pixel-based pulse coupled neural network (PCNN) method, a region-based algorithm, which combined redundancy, shift-invariance of stationary wavelet transform (SWT) and regional firing intensity of PCNN, was present. This would provide more and exact information for clinical diagnosis, determination of Lesion distribution, Open-MRI-Guided surgery and so on by more effectively information drawn from sub-images. Finally, experimental results, that shown the proposed algorithm outperform other methods according to objective evaluation criteria, were given.
The Spread-Mathematical Model of Special-Shaped Steel Wire during the Rolling
Authors: Wang Bo Jian , Sun Wei Ke , Wang Yong Jie
Published: September 2011

This article studied the rolling process of metal card wire, and established the spread formula of flat wire to special-shaped steel wire by rolling. The metal stress-increment in rolling deformation zone for the special-shaped steel wire was solved by the force-balance equation, and the mathematical model of rolling-piece spread was established according to the displacement increment function solved. By means of experiments to verify the mathematical model, the results show: the theoretical results of different materials through the model to calculate is closer the actual value after rolled , the error is less than 5%.
The Recombination of Equipment Maintenance Support Personnel Based on the Capability and Mission Model
Authors: Yue Qiang Bin , Zhao Xiang
Published: September 2011

For the aim of adapting to the requirement of information warfare, increasing the integrative support capability and improving agility and reliability of the equipment maintenance, this paper puts forward an equipment maintenance personnel recombination model. Firstly, the paper found out the requirements to the maintenance personnel in future battle. Secondly, it analyses the problems chiefly exist in our army maintenance support personnel. Thirdly, according to the mission needs, an equipment maintenance personnel recombination model based on capability and mission is built up. The maintenance personnel are recombined to the army-civilian equipment maintenance system. It can reduce the steps of the information flow and the possibility of information distortion, optimize the resource deployment and improve the agility, harmonious developing. It can increase the integration support capability of equipment maintenance support force and unitary high efficiency. Finally, a series of suggestions about recombination personnel training are provided.
Study of Non-Viral Gene Transfer of NB4 Cells
Authors: Chen Ying , Wang Huai Yu , Zhang Mei
Published: September 2011

Post-Transcriptional Gene Silencing and RNA interference (RNAi) are terms describing the specific suppression of genes by complementary dsRNA. High-efficiency transfection is an essential first step for achieving effective gene knockdown. Non-viral transfection include chemical-transfection and electrotransfection. For a particular cell line, select the appropriate transfection method is very important. In this study, we compared a variety of commercially available reagents and electrotransfection, approaches to define methods for efficient delivery of siRNA to NB4 cells. Fluorescently-labelled siRNA were tested. We report that different methods have different effects. The results provide guidelines for optimal siRNA-mediated knockdown in the NB4 cells.
Comparative Study on Filter Methods of Medical Ultrasound Images
Authors: Ma Run Xia , Zhang Xu Ming , Ding Ming Yue , Liu Qi
Published: September 2011

This paper presents a comparative study on six despeckling methods such as modified hybrid median filter, gabor filter, speckle reducing anisotropic diffusion, homomorphic filter, non-local mean filter and squeeze box filter. We select eight objective evaluation parameters, such as signal-to-ratio, contrast signal–to–noise ratio, figure of merit, least absolute error, peak signal-to-noise ratio, edge protection factor, quantitative parameters of despeckling, signal-to-minimum mean square error ratio, to quantify the performance of these filters. The comparative study will provide a good guidance for selecting a suitable filter in the ultrasound image processing.
A Heart Sound Acquisition and Analysis System
Authors: Liu Wu Chang , Wang Hai Bin , Liu Jin Qun , Fang Yu , Li Zhu Qin
Published: September 2011

This paper focuses on a heart sound acquisition and analysis system for in-home use of heart condition monitoring. The acquisition board is comprised of a transducer and the processing module, which is used to detect and send heart sound signal to PC via USB interface for heart sound analysis. The analysis software identifies normal and abnormal heart sounds, and provides an easy understanding graphical representation. Both normal and abnormal heart sounds are used to verify the validity of this system, and the result shows the system can discriminate normal and abnormal heart sounds. It is envisaged that the system can eventually be used for in-home use of heart condition monitoring that even inexperienced users are also able to monitor heart condition easily.
Computer-Supported Innovation for Modularized Product Design
Authors: Tsai Ming Piao , Shieh Peter Iming , Chuang Chin Hui
Published: September 2011

In the paper, a computer-supported model of the innovation design is presented, which is based on the synergy of modular function deployment (MFD), theory of inventive problem solving (TIPS, TRIZ) and case-based reasoning (CBR) to assist designer to engage in modularized product design. This approach involves gathering all relevant information about the customer voice and applying this information to drive the design of products or modules. So, it is starting from the MFD-Diagrams and continuing through the technical contradictions matrix in TRIZ during the conceptual design stage of new modules or parts. A CBR system is then adopted to quickly search some similar design cases for the references of inventive problem solving. Last, two reasoning mechanism are fabricated based on Protege and JESS expert tool, and a particular case of bicycle part design is studied through the use of knowledge-based prototype system to prove the effectiveness/efficiency of the computer-supported model. However, it will greatly enhance the competitive capability of companies trying to rapid development of the innovation design.
Agent Based Infrastructure with RFID Technology for Autonomous Shop Floor Control System
Authors: Shieh Peter Iming , Jeng Yao Chang , Tsai Ming Piao
Published: September 2011

Automatic shop floor control system in distributed computing context is one of the most important links in Computer Integrated Manufacturing (or CIM) system. For most agent-based manufacturing control systems, a real-time product data available mechanism is not considered. In this paper, an integrated approach of RFID technology and multi-agent system of shot-floor control is presented. The proposed framework uses RFID for tracking products in the system and also for attaching product manufacturing information. This shift from off-line planning systems to on-line control systems will facilitate implementations of real-time scheduling requirement in autonomous manufacturing environment.
Performance of Multisource Application Layer Multicast Routing: A Cost-Based Approach
Authors: Huang Chia Hui , Ke Kai Wei , Wu Ho Ting
Published: September 2011

In this work, a simulative study on the cost of multisource ALM routing protocols is presented. The authors discuss a multiplicative pricing model for multisource ALM based on the single-source cost model. By simulating various ALM protocols, the study discovered that a multiplicative characteristic is held between the cost of single-source and multisource ALM routing. The multiplicative pricing model makes the minimum cost of multisource ALM more clear for protocol designer and gives a intuitive way to examine the cost of a designed multisource ALM without incurring too many computation complexity.
A Kernel Canonical Correlation Analysis Based Idle-State Detection Method for SSVEP-Based Brain-Computer Interfaces
Authors: Zhang Zi Mu , Deng Zhi Dong
Published: September 2011

In this paper, we propose a kernel canonical correlation analysis (KCCA) based idle-state detection method for asynchronous steady-state visual evoked potential (SSVEP)-based brain-computer interface (BCI) systems. KCCA method can offer a flexible nonlinear solution to adequately extract nonlinear features of multi-electrode electroencephalogram signals. Based on this method, an ensemble KCCA coefficients feature model is proposed by weighting effectively multi-harmonic information and afterwards a threshold classification strategy for idle-state detection is presented. The weights of the model and optimal threshold are trained by the presented parameters learning scheme. Using our method, offline analysis was performed on 10 subjects with 8 fixed common electrodes. The results showed that the idle state could be detected with 95.9% average accuracy when SSVEP could be determined with 93.8% average accuracy. Further, the analysis verified the effectiveness and significant superiority of our method over other widely used ones.
Hospital Information System Performance Optimization
Authors: Xu Peng , Han Jun , Wang Jing Yu , Shu Chang
Published: September 2011

Study the issue of hospital information performance, improve hospital information management efficiency. For the issue of hospital information system disk competition, high-speed buffers and low hit rate shared pool, resulting in the problem of long time user waiting, low efficient system support for system throughput, optimization improvement for hospital information systems. First, to optimize the architecture of the database, and then rationally design system global area, disk I / O and connection pool etc in the memory area, finally reasonably organize the SQL statement. Apply to the optimized hospital information system into the Medical, example shows that optimized hospital information system improved system throughput, reduced the user waiting time, and greatly improved the operation efficiency of Medical College.
An Image Forensics Algorithm for Blur Detection Based on Properties of Sharp Edge Points
Authors: Wei Li Xian , Zhu Jun Jie , Yang Xiao Yuan
Published: September 2011

This paper proposes a algorithm for detecting manual blur on images, which is usually used to remove obvious traces when tamper images. The algorithm first blurs the test image and blocks the both test image and blurred image. Then extracts and compares the sharp edge points in contourlet domain of the two images, so as to detect the suspicious blurred blocks. Furthermore, differences between manual blur and defocus blur can be indicated by our proposed method, and we can find out whether the image has been manual blurred. We establish a rich set of experimental images, and test results show that the average accurate detection rate is high, and the tampered regions can be always located. Our next work is to improve the robustness of the algorithm.
Model Based Targets Matching from Image Frames
Authors: Wang Xin , Wang Jin
Published: September 2011

We present a new algorithm to locate targets by matching image frames taken from a moving platform. We have noticed that an image point is environment sensitive, but those energy changes of grouped points have their own statistical similarities in two image frames within limited time interval. This approach analyzes correspondence of energy points around every feature points between inter-frames in image sequence in order to decide those feature points. Successful results are given for a vide frames.
Image Segmentation Approaches of Based on Fractals
Authors: Chen Xiang , Wang Jian Min
Published: September 2011

Image segmentation is the key steps of image processing and analysis. In image processing process, first, we need make the image into a number of significant areas and the interested objects; this need use image segmentation technology. This paper summarizes the methods of image segmentation. Mainly the image segmentation approach of based on fractal is analyzed, and this method has received good result of image segmentation, it proved that fractals-based method of image segmentation is an effective way.
Object Tracking Using Probabilistic Principal Component Analysis Based on Particle Filtering Framework
Authors: Xiang Zhi Yan , Cao Tie Yong , Zhang Peng , Zhu Tao , Pan Jing Feng
Published: September 2011

In this paper, an object tracking approach is introduced for color video sequences. The approach presents the integration of color distributions and probabilistic principal component analysis (PPCA) into particle filtering framework. Color distributions are robust to partial occlusion, are rotation and scale invariant and are calculated efficiently. Principal Component Analysis (PCA) is used to update the eigenbasis and the mean, which can reflect the appearance changes of the tracked object. And a low dimensional subspace representation of PPCA efficiently adapts to these changes of appearance of the target object. At the same time, a forgetting factor is incorporated into the updating process, which can be used to economize on processing time and enhance the efficiency of object tracking. Computer simulation experiments demonstrate the effectiveness and the robustness of the proposed tracking algorithm when the target object undergoes pose and scale changes, defilade and complex background.
The Binocular Measuring System Research Based on OpenCV
Authors: Li De Jun , Ma Xiao Hui
Published: September 2011

Along with the economical development, the automobile enhances unceasingly in our country's inventory. The automobile profession takes the national support the pillar industry, has the very big promoter action to national economy's development. In recent years, the independent road sense's research and the application in domestic and foreign developed rapidly, was honored as the automobile profession the next technological revolution. This topic basis independent road sense's demand, studied one kind to be possible to use in independent driving the range measuring system. This system take the binocular range finder as a principle, may supply around the automobile body the object distance information, the precise periphery object distance information is the independent road sense foundation, thus this topic research results have the broad application space. Carries on regarding the binocular range finder's analysis under the OpenCV environment, OpenCV takes one kind to open the source the machine vision function storehouse, in the last few years along with the edition renewal, the function strengthened gradually, has involved machine vision nearly all domains. The research on two-sided visual in the OpenCV environment, simplified the binocular vision development step, sped up the development progress.
Effects of Yeast Extract on Poly-ε-Lysine Production in Batch Culture of Streptomyces Albulus
Authors: Chen Xiong , Wang Zhi , Wang Yong Ze , Jiang Fa Tang , Li Dong Sheng , Wang Jin Hua
Published: September 2011

Yeast extract (YE) is a sole organic nitrogen source in a commonly medium 3G for Streptomyces albulus to produce poly-ε-lysine (ε-PL). In this study, five YEs from five commercial suppliers were used to evaluate their effects on the growth of Streptomyces albulus 213 and ε-PL production. YE from bakers’ yeast with the highest total nitrogen content (TN), α-amino nitrogen content (AN) or the ratio of AN/TN produced the highest yield of ε-PL, while YE from brewers’ yeast with the highest RNA content got the most dry cell weight (DCW). However, there was little correlation between TN, AN or AN/TN in YE and the yield of ε-PL. There was also weak correlation between RNA in YE and DCW. When 60% baker YE was mixed with 40% brewer YE, the yield of ε-PL reached 1.89 g/l and increased by 16% and 37% than those of baker YE and brewer YE, respectively. Furthermore, five kinds of vitamins and nine kinds of amino acids were screened to supplement baker YE. When 6 mg/l biotin, 5mg/l pantothenic acid, 0.7 g/l L-glutamine and 0.5 g/l L-arginine were mixed with baker YE in M3G, ε-PL reached maximum production respondent to 3.05 g/l that was 61.4% higher than control.
Crystal Structure Analysis and Antinociceptive Property of Lappaconitine Hydrochloride
Authors: Sun Wen Xiu , Dong Tun Galag , Ding Chun Ming
Published: September 2011

An alkaloid compound, lappaconitine Hydrochloride, was synthesized with lappaconitine which was isolated from the root ofAconitum sinomontanum Nakaiin Gansu province in China. The structures were elucidated by IR,NMR, Anal. and X-ray diffraction analysis. Crystal data: C32H47ClN2O9,Mr= 639.17, space group monoclinic, P21; a=10.665 (7) Å, b=12.178 (7) Å and c=12.214 (7) Å; β=91.003 (10)°, Z=2, Dx= 1.338 mg/m-3,F(000)= 684,µ=0.18.00 mm-1, V=1586.1 (16) Å3; R1=0.038,wR2=0.087, Flack parameter x= -0.12 (7). RingA, B, C, D, EandFrespectively present boat, chair, envelope, boat, boat and envelope forms. The absolute configuration was determined as 1S, 4S, 5S, 7S, 8S, 9S, 10S, 11S, 13R, 14S, 16S, 17 R. And the analgesic potential has been investigated in a mouse model of acute pain. The result exhibited that the analgesic effect of the compound is worse than lappaconitine hydrobromide.
A New Fluororeceptor for Selective Detection of Zwitterionic Arginine
Authors: Zhou Xin , Wu Xue
Published: September 2011

A new fluoreceptor 1 was synthesized and its interactions with various amino acids have been investigated, it showed unique selective recognition and high affinity towards zwitterionic arginine in aqueous media.
Effects of Annealing Temperature of Indium Tin Oxide Thin Films Prepared onto Glass by Sol-Gel Spin Coating Method
Authors: Peng Yu Ming , Su Yan Kuin , Chu Cheng Jye , Yang Ru Yuan , Huang Ruei Ming
Published: September 2011

In this paper, the indium tin oxide (ITO) thin ﬁlms were prepared by a sol-gel spin coating method and then annealed under different temperatures (400, 500 and 550°C) in a mixture atmosphere of 3.75% H2 with 96.25% N2 gases. The microstructure, optical and electrical properties of the prepared films were investigated and discussed. The XRD patterns of the ITO thin films indicated the main peak of the (222) plane and showed a high degree of crystallinity with an increase of the annealing temperature. In addition, due to the pores existing in the prepared films, the optical and electrical properties of the prepared films are degraded through the sol-gel process. Thus, the best transmittance of 70.0 %in the visible wavelength region and the lowest resistivity of about 1.1×10-2 Ω-cm were obtained when the prepared film was annealed at 550°C.
The Coupling Bioreactor for Domestic Wastewater Reclamation and Sludge Reduction
Authors: Wang Chun Rong , Li Jun
Published: September 2011

Based on the theory of flow separate and multi-phase reaction principle, the coupling bioreactor for domestic wastewater reclamation and the sludge reduction was developed in this paper. The results showed that the coupling bioreactor kept stable COD removal efficiency above 85% with the COD loading rate increased from 0.49kgCOD/(m3∙d) to 1.93kgCOD/(m3∙d). Moreover, the excellent effluent quality could be obtained under the condition of Micro-aeration+ Anoxic + Aeration, and the total nitrogen(TN) removal of 86.7% was achieved at HRT of 8h and 43% volume ratio of anoxic zone, meanwhile the effluent TN concentration was lower than 15mg/L and a lower sludge production rate was obtained with mean value of 0.068MLSS/kgCOD.
Antioxidant Research of Persimmon Extraction in Ionizing Radiatio Mice
Authors: Chen Xiang Ning , Hu Wan Shan , Xie Yuan Hong , Li Yu Hua , Guo Lin Bo , Jin Wen Bin
Published: September 2011

Persimmon has good health function. To further investigate the antioxidant function in vivo, we set up a model mice with ionizing radiation. IRC mice were divided randomly into six groups, Blank control group, Model control group, VE control group, Low dosage group (G1), Middle dosage group (G2) and High dosage group (G3) respectively. Orally given persimmon extract for 35 days, mice were treated with γ-rays. Our results indicated that pervious administration of the persimmon extraction obviously increased the liver index of the mice. And pathological inspection by microscope suggested that orally given persimmon extraction obviously protected the liver cells of the mice. Further analysis demonstrated that persimmon extraction decreased the MDA content, and increased the SOD and GSH-PX activity in both the serum and the liver in the mice after the Ionizing radiation. Our results suggested the protection role of persimmon extraction by inhibiting the oxidation reaction in vivo.
Experimental Study on Matching Characteristics of Wave and Flame in Detonation
Authors: Zhang Peng Gang , He Xiao Min , Wang Qian
Published: September 2011

A series of single-shot detonation experiments was performed to understand the matching characteristics of wave and flame in DDT for H2/air mixures in a 60mm square tube that was 2m in length. The ion-probes and pressure transducers were respectively utilized to get the signal of flame and wave, and high-speed digital imaging was used to track flame propagation of DDT area. The matching rule of shock-flame was achieved by analyzing the intensity、velocity and position characteristics of wave and flame in different time along the tube. The results indicate that intensity of wave and flame is positive feedback characteristic and the velocity of wave and flame is alternant change process. The speed amplitude of flame is rapid than that of wave in deflagration phase. This result in the overdrivern detonation wave form and flame is temporarily in front of flame when flame catch up wave. Shock is in front of flame in phase which the overdrivern detonation evolve into steady detonation wave.
Lentiviral Vector-Mediated In Vitro Down-Regulation of Porcine Somatostatin Expression Using shRNA
Authors: Ding Jing Hua , Xi Qian Yun , Li Hong Yi , Shu Gang , Wang Song Bo , Zhu Xiao Tong , Gao Ping , Jiang Qing Yan , Zhang Yong Liang
Published: September 2011

Two shRNA sequences against porcine somatostatin (SST) were designed using software available on the NCBI website. The designed RNA sequences were chemically synthesized and cloned into lentiviral vectors (LV-siRNA1 and LV-siRNA2). Porcine somatostatin cDNA was amplified and cloned into pcDNA3.1 (pcDNA3.1-SST). LV-siRNA1 or LV-siRNA2 was cotransfected with pcDNA3.1-SST into NIH3T3 cells. Real-time RT-PCR for the detection of SST mRNA, revealed that LV-siRNA1 and LV-siRNA2 suppressed SST expression by 87.9% and 86.3% (P< 0.01), respectively. In addition, radioimmunoassay (RIA) for direct detection of SST indicated that the suppression ratios for LV-siRNA1 and LV-siRNA2 were 55.1% and 51.6% (P< 0.01), respectively. These data showed that the 2 shRNA sequences were effective in suppressing SST expression and may provide an approach to down-regulate bothin vitroandin vivoexpression of porcine SST.
Investigation of Heavy Metal Pollutants in a Sewage Treatment Plant of Changchun in Frozen Period
Authors: Lin Ying Zi , Cao Chang Hu , Yin Jun , Qi Hai Jun
Published: September 2011

According to the heavy metal investigation of some practical data in Changchun sewage treatment plant. For wastewater treatment plant and the commonly used treatment process wastewater process of the distribution of heavy metals are analyzed. We studied the heavy metals pollutant removal efficiency of situation with A/O process of wastewater treatment plant in frozen period. And make a comparative analysis of heavy metals pilot plant and demonstration project in water, determine target pollutants and focus on removal. Thus, under low temperature conditions so as to sewage treatment plants effectively remove heavy metal pollutants to provide theoretical guidance for the control of urban sewage treatment by-product of the deposition process to improve the quality of urban sewage treatment and provide scientific basis.
1.6 MeV Electron Irradiation on the Characteristics of CdTe Thin Film Solar Cells
Authors: Fang Ming Yue , Zhang Jing Quan , Feng Liang Huan , Wu Li Li , Li Wei , Li Bing , Zeng Guang Gen , Wang Wen Wu
Published: September 2011

The CdTe thin film solar cells with the structure of ITO/ZnO/CdS/CdTe/Au were irradiated by 1.6MeV high-energy electrons with the fluences from 5×1013/cm2 to 1×1016/cm2. The characteristics of devices before and after irradiation were studied using dark current-voltage (I-V), capacitance-voltage (C-V) and admittance spectroscopy (AS) measurements in the temperature range from 303K to 353K. The results are shown that the diode ideal factor and dark saturation current for irradiated devices first decrease and then increase significantly with fluences from 5×1013/cm2 to 1×1016/cm2, meantime the effective carrier concentration at room temperature of CdTe absorbing layer increases first and then decreases. The carrier transport mechanisms in CdTe solar cells are analyzed before and after irradiation. The non-irradiated devices and irradiated devices with fluences less than 5×1014/cm2 are dominated by the recombination current of electron-hole pairs in the depletion layer. However, it is dominated by the recombination current of tunneling at the interface after the irradiation of higher fluences. The changes of types and amount of defects caused by electron irradiation are the major reasons for the above mentioned variations.
Inhibitory Effect Study of Coptis Extract on Algae
Authors: Xu Zhi Lan , Liao Ri Hong , Meng Qing Yi , Zhao Li Xin
Published: September 2011

This paper reports the study of Coptis extract on its inhibition of Microcystis aeruginosa in the laboratory, and its influence on the growth of phytoplankton and zooplankton, and its impact on the Microcystin, in the natural water. The results show that: (1) the Coptis extract has obvious inhibitory effect on the Microcystis aeruginosa, and the effect increases with time. The inhibitory rate keeps above 85% from the 3rd day to 13th day after adding the Coptis extract; (2) In the natural water, the Coptis extract does not change the dominant species of phytoplankton and the species composition of zooplankton. 1~9 days after adding the Coptis extract, the density of phytoplankton cells and the dominant species (Cyanophyta) cells decrease, and the quantity of poor-middle nutrition species zooplankton soars to rise rapidly. (3) No variation on Microcystin-LR content in experiment area is observed one day after adding Coptis extract.
Hydrogen Production through CO2 Absorption Enhanced Diesel Steam Reforming for PEMFC Systems
Authors: Mi Wan Liang , Su Qing Quan , Cheng Qing , Gong Juan
Published: September 2011

CO2absorption enhanced diesel steam reforming was investigated for hydrogen production in this paper. The utilization of CO2absorbent in the reforming reactor sharply decreases the CO2level in the reacting gas and shifts the equilibrium towards hydrogen formation. This increases the diesel conversion and reforming rate of hydrocarbon at relatively low temperature. At the temperature of 600°C, reforming rate of hydrocarbon reached 95%, and that is 30 percent higher than that in traditional steam reforming reaction without absorbent. In an optimal temperature range of 545-625 °C, diesel conversion could reach near 100%. Hydrogen concentration reached 95% when using CO2absorbent, correspondingly concentrations of CO, CH4, and CO2decreased obviously, while hydrogen concentration was about 70% in conventional diesel steam reforming process. Further, a novel PEMFC system for hydrogen production was proposed by combining CO2absorption enhanced diesel steam reforming (AEDSR) with chemical-looping combustion (CLC) process, which could continuously produce hydrogen and regenerate absorbent at the same time, heat balance of steam reforming and CO2absorption reaction could also be obtained by adjusting the amount of reforming catalyst and CaO.
Research on Discriminating Environmental Quality Master Factors of Tianjin Sea Area
Authors: Bai Jing Feng , Yu Hang
Published: September 2011

Incremental tendency method is used to discriminate master factors of regional environmental quality. In this article, incremental tendency method has been revised. Taken Tianjin sea area as an example, the collation of environmental quality master factors in 2006 has been listed. It is advanced that environmental quality master factors of Tianjin sea area are mainly inorganic nitrogen and petroleum substances, and pollution management should also be aimed at these types of substances. Finally the meaning of new model in application has been explained. It provided practical basis for sustainable development of Tianjin sea area.