bluuebunny/crossref_metadata_2025 huggingface dataset:
The Application of Contact Theory in Finite Element Model of Human L1-L5 Lumbar Segments
Authors: Zhao Wen Zhi , Su Jin , Chen Bing Zhi , Sun Xue Gang , Li Bin , Zhang Lu
Published: June 2013

Appling the contact theory The finite element model of L1-L5 segment was established with self-compiled software and Hyper Mesh. Based on the spine CT continuous images of L1-L5 segments of the healthy volunteer, the three-dimensional finite elements model of L1-L5 vertebrae structure was constructed by the combination of self-compiled software and Hyper Mesh. endplates and joint cartilage intervertebral disc and ligament structure were also simulated. Between the high and low articular processes adopts the surface - surface contact theory to carry on processing. The three-dimensional finite element model was built structure integrity,with good geometric similarity. The results of the finite element model were matched to the results of the vitro experiment of biomechanics. The use of self-compiled software and Hyper Mesh can improve the finite element model of lumbar motion segment building speed and accuracy, the introduction of contact theory finite element model can improve the reliability and auteenticity.
Hydrodynamic and Mass-Transfer Characteristics of Annular Centrifugal Contactors on the Caprolactam Recovery from Waste Liquor
Authors: Xu Yan , Tang Kang , Bai Zhi Shan , Wang Hua Lin
Published: June 2013

Caprolactam recovery from waste water is an important and challenging problem in industry. In comparison with extraction columns widely applied in the recovery of caprolactam, annular centrifugal contactor is featured by compact structure, convenient maintenance, and high throughput and efficiency with low energy consumption, etc., which have a wide application in industry. The effects of flow ratio, radius of heavy phase weir and the rotational speeds on entrainment, separation capacity and mass transfer efficiency were studied with annular centrifugal contactors for caprolactam recovery. The results show that the caprolactam with 99.99% purity, the maximum separation capacity of 109L and the highest mass transfer efficiency of 99.8% were obtained.
Surface Corridor Requirements for Space Launches over the Black Sea
Authors: Rugescu Radu D. , Monea Vlad
Published: June 2013

Romanian space project NERVA develops the small rocket launcher for injecting nanosatellites into a very LEO. The launching area security first requires establishing a safe launch corridor on the ground. The first candidate for the experiments with the orbital rocket prototype is the western coast of the Black Sea in Romania. Optimal flight considerations immediately show that the best launch azimuth is on west-east direction, which defines a launching corridor along the Black Sea with the similar orientation. Do to the dense population of the sea shore area and to the rather agglomerated condition on the Black Sea, serious concerns arise regarding the safety measures to be solved, before any space activity above the Black Sea should begin. The main challenge is the safe prediction of the impact point of the space launcher in every moment of the atmospheric ascent, in case of unavoidable failure of the propulsion system. This task is assumed and presented as developed within a recent research activity of the NERVA team.
Advanced Application of Battery Management Systems in Medical Diagnostics
Authors: Prauzek Michal , Jirka Jakub , Stankus Martin
Published: June 2013

This paper describes design, methods and practical realization of advanced power supply with battery management in a portable medical device for diagnostic of the patient. The device can measure biosignal from the patient and it can save data in removable storage. Methods for selection of DC / DC converters and methods for increase in patient safety are described as well. The paper also proposes a complex application of battery management circuit and methods for reduction of electromagnetic interference. The device was tested in several charging cycles and the standard operation time was approached.
Global Behavior Factor of Frames with Eccentric Bracings and Relationships with the Ductility Requirements
Authors: Mechiche Mohamed Oussalem , Bouheraoua Ali , Chalah Farid , Hellal Ourida , Bali Abderrahim
Published: June 2013

During alternate loading cycles, as during earthquakes, the structure behavior becomes inelastic. This is particularly the case for steel structures. They show a better ability to absorb earthquake energy. This energy dissipating capacity is described by the q global behavior factor as used in the Eurocode 8. However, in other earthquake codes, it is expressed by R letter and in others only the X and V shapes bracing systems are taken into account in the seismic design. In this work, a method for determining the global q behavior factor is presented for eccentrically braced steel frames that are designed to resist seismic loads.
Performance Analysis of OQPSK Signals with Bi-Kappa Noise for Wireless Sensor Networks
Authors: Du Qiao Ling , Wang Zhi Rui , Pei Yu , Wang Yi Ding
Published: June 2013

This paper investigates the performance analysis of OQPSK in HF band for wireless sensor networks. An analytical model for getting symbol error rate (SER) is given in presence of Bi-Kappa noise in HF band. And the SER of OQPSK is given in AWGN and Rayleigh fading channel. Simulation results HF noise as Bi-Kappa noise should be investigated in HF band for WSN.
Classifying Mental Tasks Using Local Mean Decomposition of Electroencephalogram and Support Vector Machine
Authors: Huang Li Yu , Niu Jie , Zheng Jia Ning , Du Ying Ju
Published: June 2013

We present a new combination classification algorithm and test it on the EEG of right and left motor imagery experiment. First, the original EEGs signals are decomposed by Local Mean Decomposition (LMD) and then determine that the first three PFs include the main mental task features. After determining the optimal kernel parameters for support vector machine (SVM), the energy values of the first three PFs of the EEG signals from three electrodes were extracted as the input vectors of SVM. The outputs of SVM were the classification results for different mental task EEG signals. Result shows that mean accuracy of the proposed algorithm is 92.25%, and the best accuracy is 95.00%, which is much better than the present traditional algorithms.
MeAPO4 Berlinite as an Effective Catalyst for Mild Oxidation of Cyclohexane
Authors: Sun Da Lei , Chao Zi Sheng
Published: June 2013

Cobalt and/or manganese incorporated berlinites (CoMnAPO4) and aluminophosphate molecule sieve (CoMnAPO-5) were hydrothermally synthesized, characterized by XRD, FT-IR, XPS and SEM, and employed as catalysts in the oxidation of cyclohexane with molecular oxygen at 348 K under atmospheric pressure. It was found that the berlinite-based catalysts were more selective for the production of KA oil, stable during the reaction, but slightly less active for the conversion of cyclohexane, when compared to their molecular sieve counterparts. The CoMnAPO4exhibited a better catalytic performance, due to a synergic effect, than the CoAPO4or MnAPO4.
Grain Growth Behaviour of Superalloy U720Li under Continuous Heating Conditions
Authors: Wang Tao , Fu Shu Hong , Li Zhao , Zhang Yong , Zhao Yu Xin , Guo Ling
Published: June 2013

In the present work, experimental research on grain growth kinetic at different temperatures and times of heat treatment for superalloy U720Li has been carried out. The average grain sizes have been obtained under different heat treatment temperatures and times. The aim of the present study was to quantify the progress of grain growth and the corresponding activation energy and growth exponent. It has been found that both the activation energies for grain growth and growth exponent differ a lot between before and after the solution of the primary γ phase. The activation energies increase with the increase in holding time. Those trends might be due to the different solute drag effect and the variational lattice constant of γ phase.
Motion Analysis of Powder Particle in Plasma Jet
Authors: Han Hai Ling
Published: June 2013

In order to do research on the motion time of plasma spray gun in powder particle flame plating, the paper made an analog computation to powder particle motion process of plasma spray gun by establishing powder particle equation of motion and thermal evolution equation, after that the motion time of powder particle in electric arc was obtained. It provided advantageous theoretical basis for plasma spray gun design after confirming the computation results by making use of high-speed photography technology.
The Tensile and Surface Frictional Property of Soybean Protein Fibers
Authors: Yang Qing Bin , Kong Fan Dong
Published: June 2013

In order to understand the mechanical properties of the soybean protein fibers (simply called SPF) in different processing condition, the tensile and frictional properties of the SPF are measured with different instruments. By the analysis of the results, the following conclusions can be deduced: bleaching has an influence on decreasing tenacity at break for each test modality. Knotted and looped modalities decrease fiber tenacity remarkably in all three samples, and the same occurs with elongation at break. Looped modalities show lower tenacity and elongation at break, the lowest being the bleached fibers in looped modalities.
Test and Analysis of SPF Pure Yarn or SPF Tencel Blending Yarn Mechanics Property
Authors: Kong Fan Dong , Shang Lei , Liang Cheng Jun
Published: June 2013

The soybean protein fiber is one of the green fibers. It is blended with Tencel. The strength of the blended yarn is tested. The relation between the strength and the twist factor and the blended ratio is analyzed. The optimum blended ratio and the critical twist factor is determined.
Fast Tool Servo Driven by Electromagnetic Force Applied in Freeform Surfaces Machining
Authors: Nie Ya Hui , Fang Feng Zhou , Zhang Xiao Dong
Published: June 2013

Fast tool servo is increasing applied to manufacture optical freeform surfaces, which are adopted in aerospace, imaging, bioengineering, energy fields to improve the performance of the system, simplify the structure of the system and lower cost. The existing FTS have limited stroke and bandwidth. FTS driven by electromagnetic force is discussed. The analysis of the magnetic circuit, the requirements of the system and the corresponding design parameters are studied. The designed FTS can realize the bandwidth of 0-100kHz with a special designed driver.
The Comprehensive Fire-Fighting Technology Research of the Section Retracement in Fully Mechanized Workface
Authors: Niu Qun , Dai Lin Chao , Liu Fu Dao , Guo Yu Qiang
Published: June 2013

Spontaneous combustion of coal is one of the most serious coal mine disasters, which threat the workers' life safety. The paper introduce the comprehensive measures, such as monitor, positive draft technology, nitrogen injection, slip casting, fire preventing and extinguishing under seal, and other relevant coal spontaneous combustion forecast technique used in 1901s fully mechanized workface of FuCheng mining industry, when it has not been mined or its work face has not been removed, which realize the comprehensive treatment of coal spontaneous combustion, guarantee the safe production, and serves as a certain guidance and reference to the efficiency mining of spontaneous combustion coal seam.
The Design of an Automatic Golf Collection Robot
Authors: Lu Si Liang , Wang Xiao Xian , Zhang Shang Bin , Kong Fan Rang
Published: June 2013

This paper depicts the system design of an automatic golf collection robot. The robot is an intelligent system that consisted of three modules: the hardware module includes the mechanical structure and the electrical system; the control module processes the signals from the multiple sensors and outputs the instructions to navigate the robot; the vision module is used for recognition the golf balls from the grass background. The robot has been tested on the driving range, the basic functions of the robot have been achieved. The golf collection robot supersedes the human labor and shows a good application prospect.
New Blind Adaptive Channel Estimation Schemes Based on OFDM Systems
Authors: Chen Guo Jun , Hu Han Ying
Published: June 2013

Two new blind estimation schemes based on decorrelation LMS（DLMS）and time-domain orthogonal LMS（TDO-LMS） algorithms are proposed to solve the problem of convergence in the estimation scheme based on LMS algorithm in wireless mobile communication OFDM systems. These schemes are improved on the traditional LMS algorithm.The factor of TDO-LMS algorithm changes along with the power of signal ,and the decorrelation LMS removes the correlation of the signal.Two methods can get faster convergence and better estimation performance combining with alterable step in the channel estimation of OFDM systems.Simulation shows that the convergence of the schemes proposed is better than that in the channel estimation based on the traditional LMS algorithm obviously.
New Channel Estimation Schemes for MIMO-OFDM Systems
Authors: Chen Guo Jun , Zhou You , Hu Han Ying
Published: June 2013

Based on MIMO-OFDM systems,an adaptive modified factor EM channel estimation algorithm was proposed to improve the performance of channel estimation.Comparad to MEM,the adaptive modified factor was introduced in the algorithm,which reflected the impact of noise on signal more accurately and improved the estimation performance.The result of simulation showed that the algorithm proposed had better estimation performance.
A Design of Controller about LED Landscape Lamp
Authors: Fan Qiu Hua , Mu De Zhi , Liu Lian He
Published: June 2013

As the fourth generation light source，LED lamp has the following advantages：energy- saving,environment- protection,flexible installation,and long service life.Using programmable logic device as the controller of LED landscape lamp, the system has the advantages of simple design,convenient update,high reliability; at the same time , easy to configuration of background music without adding any hardware .
Online-Testing System of Parameters in Aeroplane Ground Power Supply Based on Labview
Authors: Wang Zhen , Si Jian Fei , Zhang Shu Hui
Published: June 2013

When aeroplane ground power supply is supplying electric power to aeroplane, due to the large difference in electricity needs of aeroplanes, there may be phenomenon of inadaptation in the electricity use mutation process. In order to test the online power supply quality of ground power supply and check the problem of mutual adaptability, this paper designed an online testing system of aeroplane ground power. The system determines the content of test with reference to national military standard on characteristics of aeroplane ground power supply, of which the hardware is embedded system formed by PC/104 architecture-based computer, high-speed parallel AD data acquisition card and so on; the software is programmed using Labview; the test algorithm is designed based on the “GJB 5189 -2003 Test Methods for Determining Parameters of the Characteristics of Aeroplane Power Supply”. The actual test on a certain type of ground power unit proved that the system is easy to operate, accurate in measurement and has good portability, meeting the design requirements and the urgent need of maintenance, thus is of high practical value and economic significance.
Simulation Research on Instantaneous Control in Battery Energy Storage System
Authors: Wang Qing Lin
Published: June 2013

The key technology in battery storage system was the control of inverter output waveform. This paper analyzed voltage and current double-closed loop SPWM inverter programs controlled by two kinds of instantaneous values, one was based on inductor-current feedback, and the other one was based on capacitor-current feedback. It made a detailed theoretical analysis to the system designed, and established mathematical model. The simulation study was conducted based on this simulation model which was established by making use of MATLAB/SIMULINK. The simulation result verified the characteristics of SPWM inverter controlled by double-loop instantaneous value based on capacitor-current feedback, that its harmonic distortion rate of output waveform was small, dynamic response speed was fast, output steady state accuracy was high, and capacity of adapting to load was strong.
Innovative Teaching Research on the Course of Intelligent Control System and Simulation
Authors: Yang Zhao Yang , Chen Jie , Wang Pan
Published: June 2013

Innovative teaching research on the teaching system of intelligent control and control systems simulation is developed: based on the principle of methodological integration, a teaching model in classroom with seminars is established; an intelligent teaching software system is developed for effectively supporting the teaching.
Decoupling Suspension Controller Based on Magnetic Flux Feedback
Authors: Zhang Wen Qing , Li Jie , Zhang Kun , Cui Peng
Published: June 2013

Based on MIMO state feedback linearization, the suspension module control system model had been established, and it completed decoupling between double suspension points. Double-suspension system model is very accuracy for investigating stability property and control algorithm of suspension control system. When magnetic flux signal is taken back to control system, suspension modules antijamming characteristics for resisting suspension load variety and external force interference has been enhanced. Some experiments had been done on CMS04 magnetic suspension vehicle in national mid-low speed maglev experiment field of Tangshan city in China. Therefore, the stable property of double-electromagnet suspension control system has been enhanced.
Uniform Blow-Up Rate for Diffusion Equation with a Weighted Localized Source
Authors: Chen Miao Chao
Published: June 2013

In this paper,we investigate the Dirichlet problem for a localized nonlinear equation with a weighted localized source term.Under certain conditions, the solutions have a global blow-up and the rate of blow-up is uniform in all compact subsets of the domain.Moreover,we obtain the blow-up rate on maximal value point under some appropriate hypotheses.
Electrochemical Synthesis of Platinum-Reduced Graphene Oxide Hybrids for Methanol Oxidation
Authors: Shi Guo Yu , Xia Jian Fei , Wang Zong Hua , Xia Yan Zhi , Zhang Fei Fei , Xia Lin Hua
Published: June 2013

Reduced graphene oxide (RGO) supported platinum electrocatalyst was successfully synthesized on the glass carbon electrode by the electrodeposition method. Cyclic voltammetry (CV) and amperometry were used to evaluate the catalytic activity of the Pt/RGO modiﬁed electrode towards methanol oxidation. The results revealed that the as-prepared catalyst exhibited high electrocatalytic ability in methanol oxidation, which could be attributed to the excellent properties of the reduced graphene oxide as supporting materials.
Efficient Dynamic Data Possession Checking in Cloud Computing
Authors: Jiao Wen Zhe , Wang Guo Qing , Ye Xiao Xue , Zhai Zheng Jun
Published: June 2013

Cloud computing has been envisioned as a next generation information technology (IT) paradigm. The risk of losing data stored with any untrustworthy service provider is the key barrier to widespread uptake of cloud computing. This paper proposes an algebraic signature based remote data possession checking (RPDP) scheme to verify the integrity of the data stored in the cloud. This scheme uses skip-list to support fully dynamic data operation, including insertion, modification and deletion. The scheme allows verification without the need for the auditor to compare against the original data, which reduces the communication complexity dramatically. The storage complexity of cloud user is reduced to several bytes information. Extensive security analysis shows that the proposed scheme is highly provably secure.
Optimal Design of Control Parameters for Extended Range Munitions Using Improved Genetic Algorithm
Authors: Chang Si Jiang , Chen Qi
Published: June 2013

To obtain the best control effect for the controller of Extended Range Munitions (ERM), an optimal method for control parameters design was proposed. The adaptive genetic algorithm (GA) with real coding and the elites to keep the tactics were combined, based on which the original GA was improved. An optimal model of pitch angle controller for a type of ERM was established and the improved GA was used as the solver. Taking the stabilization loop as an example, the Powell algorithm, the simple GA and the improved GA were used to optimization, respectively. The simulation results indicate that the improved GA is more efficient and possesses stronger capability for searching.
A De-Nosing Algorithm of Wavelet Threshold Based on Efficient Threshold Function
Authors: Ni Wei Chuan , Zhu Bai Hui , Wan Zhi Ping
Published: June 2013

Image digitization and transmission process often subject to outside interference that was easy to let the image turn into de-noising image; General de-noising was easy made the image details blurred. Against the phenomenon, this paper using "mathematical microscope" said with wavelet transform, and according to the inherent characteristics of the human eye's visual. Put a new optimize the scan mode of the wavelet coefficients, and proposes a new threshold de-noising algorithm. At last, decrease the overhead of unnecessary coding algorithm; simplified scanning path to reduce，decrease encoding time and improve de-noising ability to effect, making the algorithm de-noising while protecting image details; Tests showed that the research to achieve the purpose of the above study and stability de-noising advantage.
Simplified Calculation Methods about Bottom Surface Size of Shallow Foundation Bearing Eccentric Load
Authors: Fan Meng Hua
Published: June 2013

Direct calculating method was deduced from the requirements of pressure on foundation bottom surface to avoid loop computing and verified by an example. Worksheet of Excel was created and calculating via Goal Seek of Excel was presented, the initial width value of foundation should not less than 0.12m. The direct calculating method is very simple, convenient and rapidly. Calculating via Goal Seek of Excel is intuitive but you need to know how to use Excel. It is more simple if create another worksheet of Excel via the direct calculating method.
Characterization and Investigation of Polyamide 6 Nanotubes Prepared by a Novel Solution Wetting Method
Authors: Li Jian Jiang , Zhu Xiao Yi , Song Guo Jun
Published: June 2013

Polyamide 6 nanotubes array has been prepared using anodic aluminum oxide membrane with only 200 nm pore diameter as the template via a polymer solution wetting method. In this study, we have investigated the morphology of polymer nanotubes array with Scanning Electron Microscope. And we have also investigated the thermal properties of the Polyamide 6 nanotubes with Thermal Gravity Analysis and Differential Scanning Calorimetry, respectively. The Thermal Gravity Analysis and Differential Scanning Calorimetry results indicate that the thermal decomposition temperature of Polyamide 6 nanotubes is higher than that of bulk Polyamide 6(PA6) polymer.
Application of Intelligent Decision Support System in Enterprise Management
Authors: Tan Yong Jie
Published: June 2013

Decision-making in the process of business operations is a more complex management task and is a core part of enterprise management. With the continuous development of the social economy, the living environment of enterprises is increasingly complex and the competition among enterprises becomes increasingly fierce. Intelligent Decision Support System is a new information technology that can provide information and solutions for enterprise management, help managers quickly process information, reduce their burden of work, and enhance managers efficiency and quality of decision-making.
Optimal Pricing Problem of a Closed-Loop Supply Chain with Remanufacturing
Authors: Chang Wen Jen , Chen Kong Xiang , Lin Chun Li
Published: June 2013

Reverse logistics is an important research area of particular interest to the academic community in recent years due to the impact of economics and environmental statutes. Reverse logistics deals with the processes associated with the reverse stream from owner to re-users. It encompasses all of the logistical activities from products no longer required by users to render those products usable in a market. Remanufacturing is one of the reverse logistical processes that could save substantial production costs. This study investigated a hybrid system involving manufacturing and remanufacturing processes. A constant demand can be satisfied by differentiated brand-new and remanufactured products. The used products are returned and remanufactured. We developed a mathematic model to analyze the economic decisions in pricing brand-new and remanufactured products.
Research on Impcact of Interest Rate Marketization to SME Financing
Authors: Qin Qun Fa
Published: June 2013

Along with the reform of financial system pushing forward continuously in China, the government has been releasing regulation to interest rate, the process of interest rate marketization has been increasingly deepening. It is still a problem the small and medium-sized enterprises (SME) will face in the process of development that their financing is difficult. In the environment of interest rate marketization, the small and medium-sized enterprises should analyze that what impact will the interest rate marketization produce to themselves, improve their credit as well as business performance and strengthen financing management to realize a more rapid development.
Study of Energy-Saving Reform in Garment Production Enterprises
Authors: Kong Fan Dong , Liang Cheng Jun , Han Wei
Published: June 2013

In view of present situation of high energy consumption for apparel manufacturers, the reasons for high energy consumption were analyzed in this thesis which tries to explore effective solutions to the mentioned problems. And several different reform programs are presented after feasibility analysis, payback period method and other aspects of comprehensive analysis to identify the most suitable rehabilitation programs for garment production enterprise.
The Reliability Evaluation of Power System Based on Uncertain Linguistic Information
Authors: Gao Da Rong , Geng Yu Ru
Published: June 2013

Electric power system reliability evaluation depends on reasonable target setting and calculation. This article mainly analyses the new index of power system reliability assessment in the electricity market environment, and on the basis of this, introduces the application of uncertain linguistic information in the ceremony system reliability evaluation, representing original parameters with uncertain number, and random processing fault condition happened and transfer events and process.
Microbial Transformation of Saponins in Dioscorea zingiberensis for Diosgenin Production with Trichoderma reesei
Authors: Yu Li Dan , Zheng Tian Xiang , Zhu Yu Ling
Published: June 2013

Microbial transformation of plant tubers for diosgenin production is an attractive clean method in industry. The purpose of this study was to evaluate the quality of the product obtained this way. Changes of saponins during the hydrolysis ofDioscorea zingiberensistubers byTrichoderma reeseiwere investigated. Four main saponins were isolated from the plant herbs. Sugar chains, which connected to the C-3 hydroxyl group in saponins, were cleaved stepwisely byTrichoderma reeseifrom the terminal sugar until the aglycone was released. Diosgenin-3-O-β-D-glucose was a byproduct in this process. While, in the petrol extract of the microbial hydrolyzate, only diosgenin was detected. Melting point, IR spectra and13C NMR spectroscopy were used to estimate the quality of the product. Diosgenin obtained from bioconversion showed similar characteristic to that from acid hydrolyzation, confirming microbial transformation was an effective method for diosgenin production.
The Expression of Decoy Receptor 3 in Peripheral Blood Monocytes of Rheumatoid Arthritis Patient
Authors: Sun Ke Xin , Li Chun Hui , Li Yan , Guo Su Hong , Hou Yi Ju
Published: June 2013

To investigate DcR3 mRNA levels of peripheral blood monocytes in rheumatoid arthritis(RA)，and analyzes the correlation between the DcR3 Levels of Peripheral Blood and the Disease Activity in Rheumatoid Arthritis Patient. The expression levels of DcR3 mRNA in peripheral Blood monocytes of 82 RA patients and 53 healthy controls were detected by real-time polymerase chain reaction. The expression levels of DcR3 mRNA of active stage in RA patients were higher than that of remission stage in RA patients and healthy controls(P<0.05); The correlationships between DcR3 mRNA levels and active renal score (DAS28)show positive correlation. The expression levels of peripheral blood DcR3 does significant increase in RA active patients and it is closely related with the activity of the disease which suggesting that DcR3 migh involved in the pathological process.
Response Surface Methodology for Extraction Optimization of Phyllostachys pubescens Bamboo Shoots Protein
Authors: Lv Guo Ti , Li Ji Hua , Huang Chang Xin , Zhu Bing Qing , Huang Xiao Bing , Lin Li Jing , Xiong Shan Bai
Published: June 2013

The aim of the study was to investigate bamboo shoots protein extraction. A Box-Behnken design (BBD) was applied through the Response Surface Methodology (RSM) to determine the effects of pH, temperature and solid-liquid ratio during Phyllostachys pubescens bamboo shoots protein extraction. Regression analysis was applied on the data obtained. The more relevant variables were pH, liquid-solid ratio. The coefficient determination (R2 = 0.9258) was good for the second-order model. Maximum yield was 10.77±2.28% obtained when pH, liquid-solid ratio, temperature and extraction time were 12, 32.24, 46.12°C and 20 min, respectively. The result was help to design the process of optimal protein extraction from Phyllostachys pubescens bamboo shoots.
The Application of Neural Network in the Bionic Control System of an Artificial Heart Based on Neuroshell
Authors: Jing Teng , Wang Fang Gun , Qian Kun Xi
Published: June 2013

With the development of heart pumps, more and more commercial artificial heart have been applied to clinic use. However, most of the products produce some discomfort to human body, which coudn’t meet the physiological requirements of patients. Therefore, further improvement and enhancement for these products are needed and adopting bionic control using neural network is an effective method to improve heart pumps’ comfort. A neural network model was established in this paper according to the relationship among the pressure head, the motor power and the rotating speed using using Based on neural network software Neuroshell2. Based on the defined appropriate activation function, a lot of data were studied and trained for optimization of the neural network model and determination of weights and deviations . Finally, the bionic control system was built and the experiments of the control system were conducted. The results reveal that the error measured values and the actual values was within 5% and acceptable and that the bionic control system using neural network is proved to improve the the comfort after implantation of blood pumps.
Graphene Modified Molecular Imprinted Electrochemical Sensor for Specific Recognition of Bovine Serum Albumin
Authors: Li Feng , Xia Jian Fei , Wang Zong Hua , Xia Yan Zhi , Zhang Fei Fei , Xia Lin Hua
Published: June 2013

A simple and efficient molecularly imprinted sensor (MIPs/GR/GCE) was firstly prepared by electropolymerization of pyrrole in the presence of bovine serum albumin (BSA) in an aqueous solution based on a graphene modified glassy carbon electrode for the selective recognition of bovine serum albumin. The prepared sensor was characterized by differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS), in which [Fe(CN)6]3−/4−was used as an electrochemical active probe. The results showed a wide linear range from 1.0 × 10-3to 1.0 × 10-9g/mL. And the imprinted biosensor indicated excellent selectivity and high sensitivity.
Analysis of Agarwood Waste at Different Pre-Treatment for Silica Xerogel Production
Authors: Zainuddin Nurul Amira Shazwani , Ismail Kamariah Noor , Ku Hamid Ku Halim , Mohd Rodhi Miradatul Najwa , Mohibah Musa
Published: June 2013

Aquillaria species or agarwood has principal uses as medicine, perfume and also incense. This study was mainly on the agarwood waste; the element occurs in agarwood waste with pre-treatment was examined, and the results are compared against raw agarwood and agarwood waste ash. The objective of present work is to indicate the inorganic compound available, especially silica in agarwood waste. Series of analyses was performed to study the organic and inorganic compound found in agarwood waste, as well as to determine the silica existence. The analysis involved CHN, XRD and TGA. Further study is necessary in order to develop new substitute raw material for silica gel production by using agarwood waste.
Applying Ecological Niche Suitability Model to evaluate Land-Use Fitness
Authors: Zhao Xiao Fan
Published: June 2013

Using ecological niche model, the suitability of forest land-use in Nanfen of Benxi City, Liaoning Province was evaluated in terms of natural, economic and social factors. Results indicated there was not enough suitable area for forest land-use and one-third of current forest land-use was evaluated as unsuitable area. Ecological niche of actual resources should be improved for better eco-environment of forest land-use.
Classification and Prediction of Economic Losses - Storm Surge Disasters in Guangdong Province of China
Authors: Zhao Ling Di , Hao Qing
Published: June 2013

This paper took Guangdong province as an example, using the statistical data of twenty times storm surges from 2003 to 2010 to evaluate the disasters and predict the economic losses. We expected it to supply with sound references and proof for the decision-makers to prevent storm surges. With economic indices of direct economic losses, collapsed houses, damaged farmland area, et al., this paper used entropy method and factor analysis method to grade the storm surges into separate levels, which are the mild disaster, the moderate disaster, the serious disaster and the extra serious disaster. By BP neural networks and gray prediction method, we established the evaluation and prediction models of direct economic losses. Comparing the results of both methods, it found that neural network is more applicable and accurate to predict the economic losses of storm surges.
Review of Key Technique Research on the Field of Vegetation Restoration in Beach Wetlands
Authors: Xie Wen Xia , Xu Zhen , Zhu Kun Jie
Published: June 2013

The study wetland vegetation restoration technology system and representative beach wetland restoration projects at home and abroad are summarized. Technology system of wetland vegetation restoration mainly includes engineering technology and biological technology. Ecological restoration research of coastal wetland in China mainly concentrated in the Yellow River Delta, the southeast coastal mangrove wetlands, coastal beaches of Jiangsu and the coastal wetlands in Shanghai Fengxian District. Finally, the issues existed in current research field were pointed out. The research fields need to be strengthened for the detailed field investigation and laboratory analysis of soil, vegetation, hydrology, meteorology, etc. According to the actual situation of wetland beaches, wetland site type will be divided. Suitable salt-tolerant plant varieties should be filtered and the mudflat wetland vegetation recovery key technologies should be explored.
Effect of Zn on Microstructure and Mechanical Properties of Al-Zn-Mg-Cu-Zr Alloy by Powder Metallurgy
Authors: Wu Chuan Dong , Li Cheng Zhang , Fang Pan , Luo Guo Qiang , Shen Qiang
Published: June 2013

In this paper, full-density Al-Zn-Mg-Cu-Zr powder metallurgy (P/M) alloy is prepared by hot-press sintering in vacuum at 600°C. Experiments are conducted to evaluate the effects of Zn additive in the range of 7.2-8.4 wt.% on the microstructure and mechanical properties of Al-Zn-Mg-Cu-Zr alloys. X-ray diffraction (XRD), scanning electron microstructure (SEM) and electron probe micro-analyzer (EPMA), and mechanical properties such as tensile strength are measured. The porosity decreases gradually with increasing of Zn and it achieves 0.01% with a density of 2.95 g/cm3at 8.4% Zn. The tensile strength reaches the maximal value of 436 MPa at 8.4% Zn.
Preparation and Characterization of Novel Polyfluorenes Derivatives Containing Phenanthro[9,10-d]imidazole Group for Deep Blue-Light-Emitting Polymers
Authors: Wang Zhi Ming , Ma Ling Ling , Zhang Xiao Juan
Published: June 2013

A series of novel polyfluorenes derivatives containing different ratio of phenanthro -[9,10-imidazole (PI) group on backbone are designed, synthesized and well characterized. Comparing with the class blue polymer PF, they all exhibit deep blue emission in solution and film with high PL efficiency, and show better film forming ability because of the insert of bulky substituent on PI unit by the AFM measurement. The CV results of all compounds deliver balanced carriers injection ability, and the decreased LUMO levels and improved HOMO levels are observed, which is befit of the preparation of high performance deep blue OLED.
Synthesis of CaWO4:(Eu3+,Tb3+) Thin Films by a Two-Step Method at Room Temperature
Authors: Chen Lian Ping , Gao Yuan Hong
Published: June 2013

It is hardly possible to obtain rare earth doped CaWO4thin films directly through electrochemical techniques. A two-step method has been proposed to synthesize CaWO4:(Eu3+,Tb3+) thin films at room temperature. X-ray diffraction, energy dispersive X-ray analysis, spectrophotometer were used to characterize their phase, composition and luminescent properties. Results reveal that (Eu3+,Tb3+)-doped CaWO4films have a tetragonal phase. When the ratio of n (Eu)/n (Tb) in the solution is up to 3:1, CaWO4:(Eu3+,Tb3+) thin film will be enriched with Tb element; on the contrary, when the ratio in the solution is lower than 1:4, CaWO4:(Eu3+,Tb3+) thin film will be enriched with Eu element. Under the excitation of 242 nm, sharp emission peaks at 612, 543, 489 and 589 nm have been observed for CaWO4:(Eu3+,Tb3+) thin films.
Preparation, Characteristics and Bioactivity of Gypenosides-Loaded Microcapsules
Authors: Yu Fan
Published: June 2013

Microencapsulation has great potential extensive applications in fields of cosmetics, pesticides, pharmaceutical and medical applications, foods, biology, catalysis, carbonless copying paper and many other areas. Gypenosides (GPS) are extracted from Gynostemma pentaphyllum Makino, widely used in Southeast Asian folk medicine or food. In the current study, Gypenosides-loaded microcapsules (GPMC) were prepared by gelatin/gum. Characteristics and bioactivity of the GPMC were evaluated. An up to 80% encapsulation of GPS at pH 4.0 was achieved, with 1:2 drug to wall materials ratio and a 3% gelatin/gum arabic while stirring at 500 r/min. Microscopy revealed an average microcapsule size of 52.4 μm. Pharmacological studies showed that GPMC exhibited excellent therapeutic effects, such as expectorant activity, cough relieving and anti-inflammatory effect. The results indicate that microcapsulation is a safe and efficient delivery for GPS.
Effect of N2 Pressure on the Phase Composition and Morphology of Ti2AlN Prepared by Self-Propagating Combustion Method
Authors: Tian Jia Jin , Zhai Feng Rui , Zhang Li Li , Liu Gui Yang , Ding Zhi Mei
Published: June 2013

Ti2AlN ceramic have been prepared by self-propagating high-temperature synthesis method using Ti, Al and TiAl mixture as raw materials under different N2 pressures. X-ray diffraction (XRD) and scanning electron microscope (SEM) have been used to determine the phase composition and micro morphology of the products. XRD analysis indicates that the main phase of the products is layered ternary compound Ti2AlN, but there are TiN and AlTi3 impurities in the products. With increasing N2 pressure, the relative content of TiN increases, whereas the relative content of AlTi3 decreases. SEM imagines exhibits that layered grains of the products become larger and tighter with increasing N2 pressures.
Advances in Water Treatment Application of Sepiolite Mineral Materials
Authors: Wang Fei , Feng Lei , Tang Meng Ran , Li Ji Yuan , Tang Qing Guo
Published: June 2013

Synthetic nanomaterials have the disadvantages of large-scale investment, high energy consumption, complex production process and heavy environmental load. Mineral nanomaterials such as sepiolite group mineral nanomaterials are characterized by small size effect, quantum size effect and surface effect. Water treatment application of sepiolite group mineral nanomaterials has become an active research area and showed good development and application prospects. Based on the above reasons, this paper systematically summarizes the water treatment application of sepiolite group mineral nanomaterials, and development trend related to water treatment application of sepiolite group mineral nanomaterials were also proposed.
Microstructure of Electromagnetically Levitated Si Droplets Solidified on Copper Plate
Authors: Li Li Xin , Zhao Jun Liang , Cai Hong Xin
Published: June 2013

By combination of electromagnetic levitation and copper-plate quenching, deep undercooling and non-equilibrium solidification of Si melts were realized. Several different morphologies of Si solidified at different undercoolings were found on the quenched surfaces, including spherical non-faceted morphology, faceted dendritic morphology, octahedral morphology and other polyhedral morphology. The mixed microstructures consisting of non-faceted and faceted morphologies in one single sample provide direct evidence for the growth mode transition from a continuous form to a lateral form.
Design and Analysis of Anchorage Zone and Deviation Block of External Prestressed Concrete Bridge
Authors: Yi Bing , Li Fang Yuan
Published: June 2013

As an external prestressed concrete box girder continuous rigid-frame bridge with the longest span in China, the Xiantan Bridge was reported in this paper for its special characteristics. The key points of the end cross beam for anchorage zone and deviation block for the deviator were introduced in detail for its design. The finite element models for them with 3D FEM were created to get the stress state to ensure the safety. Taking the stress distribution results into account, the optimization design for the thickness for these key locations was reported too. The results can provide reference for the similar projects.
Ti2AlN Prepared by Self-Propagating High-Temperature Combustion Method Using TiN as Additive
Authors: Tian Jia Jin , Zhang Li Li , Bi Xiong Wei , Liu Gui Yang , Ding Zhi Mei
Published: June 2013

Ti2AlN ceramic have been prepared by self-propagating high-temperature synthesis method using Ti, Al and TiN mixture as raw materials under different N2 pressures. X-ray diffraction (XRD) and scanning electron microscope (SEM) have been used to determine the phase composition and micro morphology of the products. XRD analysis indicates that the main phase of the products is layered ternary compound Ti2AlN, but there are TiN and AlTi3 impurities in the products. With increasing N2 pressure, the relative content of TiN and AlTi3 decreases. SEM imagines exhibits that the grains of the products become larger with increasing N2 pressures.
Application of Nonlinear Differential Dynamic Model to Evaluate Long-Term Aging Behavior of SBS Modified Asphalt
Authors: Hou Yue Qin , Ji Xiao Ping , Tan Xue Zhang
Published: June 2013

In order to study the long-term aging behavior of SBS modified asphalt, a nonlinear differential dynamic model was developed and the aging tests with rolling thin film oven test (RTFOT) for SBS modified asphalt were carried out. The dynamic model was developed referring to the population developing model with two parameters, namely average aging rate and aging ratio. And the differentiation of the dynamic model was the aging rate equation with which can calculate the aging rate at any time. The aging tests with RTFOT for SBS modified asphalt at different times were carried out and the penetration, ductility at 5°C, softening point and viscosity at 135°C were measured after RTFOT. With the rest results, the two parameters of nonlinear differential dynamic model of above four indexes were determined, and further the aging rate equations were deduced. The research results show that the nonlinear differential dynamic model can exactly describe the varying behavior of penetration, ductility, softening point and viscosity of SBS modified asphalt after RTFOT aging test with different time. The aging rate reach maximum value at the beginning and becomes smaller and smaller as the time goes.
Orientation System of Best Imaging Location of Aerial Cameras Based on CCD
Authors: Zhao Mei , Zhao Ying , Sha Yu Fang , Guo Fei , Yang Ming Quan
Published: June 2013

A system for orientation the best imaging location of aerial cameras is designed, and the working principle, hardware components of the system are described. The orientation information is produced by collimator. The best imaging location is determined by size of the collecting image with area CCD camera and the data is processed by least square method. The converter controls the translation of the camera in axial direction precisely. Off-focus or not is judged based on the distance between the real image location and the best image location. Through the tests of multiple aerial cameras, the estimation of off-focus or not is similar with test flight result with the system.
Influence of Parameters of Photonic Crystal Fiber Bragg Grating on Slow Light Delay
Authors: Hou Shang Lin , Kang Shuang , Liu Yan Jun , Lei Jing Li
Published: June 2013

The influence of grating period and length of Photonic Crystal Fiber Bragg Grating on delay is investigated by using numerical simulation method and the coupled mode theory. The result shows that grating length and period has remarkable impacts on the delay. The maximum value of the delay can be obtained by parameters optimization, which is 52ps occurs at the grating length of 1.06cm.
Swept-Source OCT System Based on a Polarization-Dependent Semiconductor Optical Amplifier-Enabled Fourier Domain Mode Locked Laser
Authors: Shang Huai Ying , Huo Li , Wu Yuan Peng , Lou Cai Yun
Published: June 2013

We demonstrate a swept-source OCT system based on a polorization-dependent semiconductor optical amplifier (SOA)-enabled Fourier Domain Mode Locked laser (FDML). The broad bandwidth and high saturation power of the semiconductor optical amplifier enables single semiconductor optical amplifier operation with enough bandwidth and output power. The FDML generates ~32mW output power at 45kHz sweep rates, with a tuning range of 115 nm centered at 1326 nm. Using the SOA-enabled FDML laser, ~12.9μm axial resolution,9μm transverse spot size and 105dB sensitivity are achieved. OCT imaging of biological sample is also demonstrated.
Optimizing Design of a Single-Mode Optical Rib Waveguide
Authors: Duan Jin Yan , Wang Jian , Zhang Bing , Ren Yi Tao
Published: June 2013

The modal characteristics of the optical rib waveguides are analyzed systematically based on the effective index method (EIM) and the improved normalized eigen equations of the waveguides are obtained by defined normalized parameters, which the thickness of the outer slab and the normalized outer ridge height of the waveguides are used as parameters in the single-mode condition. The achieved expressions are simpler and easier to optimize the structure parameters in designing a single-mode rib waveguide.