bluuebunny/crossref_metadata_2025 huggingface dataset:
The Phase Transformation and Melting Behavior of Micro-Nano Iron
Authors: Liu Wei , Jin Jing , Zhao Qing Qing , Zhang Ying Wen , Liu Lei , Gao Wen Jing
Published: August 2014

In this paper the melting behavior of micro-nanoiron particle in a medium diameter of 100nm, 200nm, 300nm and 500nm was studied using a DSC (Differential Scanning Calorimetry). The results show that micro-nanoiron particle experiences three stages of phase transformation from room temperature to 1400°C, α-Fe to β-Fe, β-Fe to γ-Fe and solid to liquid. Temperatures for the former two phase transformations hardly change with diameter of iron powder while for last transformation temperature increases when the diameter raising. The melting point of 500nm iron particle is 157°C lower than the bulk iron. Melting enthalpy is no longer a constant but a number decrease with diameter decreasing.
Study on Recovery of Metals from Printed Circuit Board Using a Gas-Liquid Fluidized Bed
Authors: Han Yue Bin , Li Li De , Li Guang Ming , He Wen Zhi
Published: August 2014

Comminuting and enrichment are the key technology to recycle waste printed circuit boards (WPCBs), in this paper the mechanical separation of WPCBs, comminuting by bang comminute and enrichment by air-solid fluidized bed, was studied. Experiments were designed to examine the impact of the airflow velocity and particle diameter to the air separation process, in order to optimize the operation condition. The results illustrated that it is feasible and very effective to apply gas-solid fluidized bed to recycle WPCBs.
Leaching of Niobium from Low-Grade Refractory Ore Using H2SO4 Roast System
Authors: Wu Biao , Shang He , Gao Wen Cheng , Wen Jian Kang
Published: August 2014

A new improved method is proposed for the leaching and extraction of niobium from a low-grade refractory niobium–tantalum ore.The ore was roasted and decomposed with concenrated H2SO4 then leached with dilute sulfuric acid. The effects of various factors, such as roasting temperature and time, acid to ore mass ratios,as well as particle size, on the dissolution kinetics of niobium were comprehensively investigated. The optimal conditions were particle size-38μm, roasting temperature 300°C,reacting time 2h and acid to ore mass ratio 1:1. The roasting residue reacted for 2 h with sulfuric acid in the ore/acid weight ratio of 3:1 at 90°C, the niobium was recoveried as high as 90.3%.
The Designation of the Collector in Aluminosilicate Minerals Flotation and the Study of its Mechanism
Authors: Cao Xue Feng , Lu Jian An , Liu Run Qing
Published: August 2014

The main gangue minerals in bauxite ore are kaolinite, illite and pyrophyllite. The bauxite reverse flotation aims to float them out. In this essay, a certain type of bauxite is taken into account to design and synthesize the N-Alkyl-1,3-diaminopropane from the perspectives of solid-philic group and nonpolar group by applying the kaolinite crystal model in Curis2 software. It also studies the function mechanism of this newly developed reagent in flotation by applying flotation solution chemical calculation, ζ-potential test and infrared spectrometry test.
LuZiYuan Lead-Zinc Mine Hydrogeological Conditions and Geological Environment Evaluation
Authors: Zhou Kai Feng , Xiao Bin
Published: August 2014

Luziyuan lead zinc mine is "a major breakthrough in southwest Sanjiang metallogenic belt," the recent deposit . The deposit type belongs to the sedimentary transformation - skarn lead-zinc deposit . Since its proven lead and zinc reserves, the geology of the region hydrology work has increased , sohas also made some achievements. In this paper, according to the hydro-geological characteristics, in Luziyuan area (GE) containing water (Group) division, chemical characteristics of groundwater and the water rich coefficient method and water dynamics of pit water gushing prediction to elucidate the hydro-geological conditions of mining area, and introduces and evaluation of geological environment in mine, and puts forward the corresponding governance measures, provi-de scientific basis for safety production in mine area.
Pulverizing System Simulation Model of a 300MW Oxy-Fuel Coal Fired Boiler
Authors: Gao Jian Qiang , Wang Ning , Wang Yu Lan , Shen Liang Jie
Published: August 2014

This paper focused on researching the pulverizing system of a 300MW oxy-fuel coal fired boiler, which took dehydrated recirculation flue gas as the drying medium. According to the working principle, the paper established the simulation model, and completed dynamic simulation tests basing on the IMMS platform. The dynamic simulation tests included the disturbances of the pressure of the flue gas inlet and the opening degree of the main flue gas valve. The results demonstrate that the model is precise, stable and it possesses good dynamic characteristic.
Simulation Study on Oscillating Cavitation Nozzle for Cleaning Based on FLUENT
Authors: Yang Han , Lei Yu Yong , Tao Huan , Zhang Li , Chen Xuan
Published: August 2014

Abstract: Based on the basic theory of fluid dynamics and Fluent software, numeric simulation of self-excited oscillating cavitation jet nozzle for cleaning was carried out. The flow field characteristics within tubular organ cavitation nozzle is studied. By numerical simulation, the exit velocity, velocity vector distribution, pressure inside the nozzle as well as static pressure distribution were obtained. The simulation results show that there is a maximum speed at cylindric section inside the cavitation nozzle. When water jet getting into the cylindric section of the cavitation nozzle, there is a significant zone with high negative pressure.Also there is a obvious zone with negative pressure at the outlet end. When the pressure is below the saturation vapor pressure of the liquid, cavitation bubbles occured. Therefore the cavitating water jet was generated. The simulation results also show that there is a higher negative pressure inside the nozzle region when the nozzle inlet diameter Ds = 6 mm, the diameter of the cavity D = 3 mm, the diameter of the cylindric section d = 1.8mm, the resonator length L = 6.2 mm, spread angleα= 60 °, the length of the cylindric segment s = 6 mm, Thererfore it is beneficial effect for the cavitation generating.
Application of Artificial Wetland Technology in Rural Water Pollution Control
Authors: Zhu Huan Ying , Zhou Ming , Liu Xiao
Published: August 2014

In recent years, with the quickening pace of urbanization in our country, rural economic development and living standards have greatly improved, however, at the same time, economic development also makes the rural water environment increasingly serious. This paper briefly introduce the sources and characteristics of rural water pollution source, collection and treatment style, and according to the existing rural conditions, combined with environmental protection, mainly studied the application of ecological wetland in the rural water pollution control, and briefly describes the mechanism of artificial wetland water purification, common water purification technology and some Suggestions for rural water pollution control, hoping that it can offer some help to improve rural water environment in the future.
Modeling Energy Demand and Carbon Emissions from Transport in Shanghai
Authors: Zeng Lin Hui , Li Guang Ming , Li Song
Published: August 2014

Private vehicle traffic is among the main contributors to anthropogenic carbon emissions. Efforts have been made to control private vehicle in major cities around the world to mitigate carbon emissions from transport sector. The aim of the paper was to find policy implications for energy saving and carbon reduction in transportation in the future. Gompertz model and Spread Sheet model were applied in this paper to estimates energy consumption and carbon emissions from Shanghai’s vehicle transport in the future. Results showed that vehicle ownership of the city will reach 6.15 million in 2030. Under BAU scenario, CO2 emissions from Shanghai’s vehicle will reach 34.163 million t in 2030. While under the FEP scenario, gasoline demand will reduce by 30% compared with the baseline scenario. It shows that fuel economy policy is essential in energy saving and carbon reduction in vehicle sector.
Manganese Removal from Electrolytic Manganese Residue Using Ozone
Authors: Yang Wen Qiang , An Juan , Yuan Xiao Li , Xia Wen Tang
Published: August 2014

This paper deals with experimental investigations related to removal of manganese (II) from electrolytic manganese residues by using ozone as oxidant. Ozone was used in this study to oxidize manganese converting bivalent manganese to high valence states, the oxidized salts will precipitate as manganese oxides, that to reach the concentration of the pollutant under its limit values in water. Effects of reaction temperature, reaction contact time and initial pH value on the manganese (II) removal were investigated. The results indicated that the removal rate exceeded 99.9 percent, and the manganese (II) in solution was lower than 0.1 mg·L-1 under the conditions of reaction temperature 45 °C, reaction contact time 40 min and initial pH 12.
Study on the Application of Gob Drainage Pipe Technology in Gas Controlling at the Upper Corner of Working Face with U Type Ventilation System
Authors: Zhang Jing Gang , Mo Da Biao
Published: August 2014

This paper takes the fully mechanized face of Yuecheng mine 1302 for example, Yuecheng mine belongs to Jincheng Mining Group in Shanxi. It talks about the gas emission law and governance principles which happen in the gob with U Type ventilation. The research proves that, with laying two goaf pipelines in the ventilation roadway, one inserts into the upper corner to drainage and the other one embeds into the gob to drainage, it can effectively prevent the gas in the gob from emitting, and can eliminate the gas accumulation at the upper corner in the working face and ensure the safety of production in the working face.
Simple and Eco-Friendly Hydrothermal Synthesis of Luminescent Carbon Nanoparticles for H2O2 Detection
Authors: Wang Huan , Liu Ya Bing , Kong Ling Wei
Published: August 2014

The fluorescent carbon nanoparticles (average diameter: 10~50 nm) are prepared by using a simple and eco-friendly hydrothermal process, and show a stronge blue emission. The fluorescence of the water soluble carbon nanoparticles could be quenched effectively by H2O2 without obvious shift in maximum photoluminescence emission wavelength, which can be used for the detection of H2O2.
Simulation Analysis on Harmonics Pollution of Large-Scale Wind System Accessed to Grid
Authors: Liang Chen , Yang Mei , Zheng Wei , Zhi Yong
Published: August 2014

The harmonic sources model of wind grid accessed to power system is established by measurement and statistical methods based on the large scale wind system planning of Gansu jiuquan area. The harmonic power flow is analysed under different operation modes in power system. The harmonic pollution trend of the million kilowatt wind accessed to power system at present stage and 2015 are analysed and compared, the calculation results show that the harmonics pollution is most serious at the point which wind power accessed to the network, the harmonic pollution degree is damping along the line. The farther electrical distance from harmonic sources, the fewer harmonic, and the harmonic pollution is decreasing with the grid structure constantly reinforced. This research will provide reference data for power grid planning and wind power quality management.
Sustainable Development of Ecological Environment Dahongshan Iron of Kunming Iron and Steel
Authors: Zhou Kai Feng , Xiao Bin
Published: August 2014

Kunming Iron and Steel Dahongshan for iron ore mining in the mining area has caused the destruction of the ecological environment , in order to mine ecological environment and sustainable development can continue , but also to be able to mine the sustainable development of iron ore taken Dahongshan land reclamation , waste Stone reuse, recycling unused land measures . Explores the combination of the above measures Dahongshan Iron accompany students in other industries . And give mine ecological environment protection , the proposed recovery.
The Reliability Study and Application of Isolated Network Operation of Coal-Fired Power Plant
Authors: Chen Jin Li , Dong Jing Jing , Li Zhi Gang , Li Jing Ji
Published: August 2014

According to the features of isolated network operation of coal-fired power plants, the risk of isolated network operation was analyzed. Starting with the control mode, logic protection and operation adjustment, the control strategy of isolated network operation was developed and the reliability of the coal-fired unit was proved to be significantly improved.
Voltage Sag Frequency Assessment Considering Uncertain Influencing Factors in the Power System
Authors: Yu Xi Mu
Published: August 2014

Many uncertain factors influence the assessment of voltage sag frequency (VSF), such as system operation modes, the fault rates of components and fault locations. In existing methods these factors are considered constant resulting in reasonless results. In this study, the uncertain property of fault location, system operation mode and failure rate of component are integrated to assess the VSF for the first time. The maximum entropy principle, typical operation modes and time-varying rate are used for characterizing the uncertainty of these factors. The assessing method and approaches are presented. Three cases considered different conditions are simulated on IEEE-30 standard testing system. The proposed method compared with Monte Carlo Simulation has been shown that it is reasonable and accurate and with good academic value and practical foreground.
Object-Oriented Method of Constructing Electric Power System Domain Ontology Based on Protégé
Authors: Li Jian Xin , Ke Gang
Published: August 2014

This paper presents a method for domain ontology of constructing power system based on Protégé . This paper describes how to package Interoperability Portlet into semantic Portlet, then create semantic data association between ontology-based semantic Portlet and using semantic inference rules to realize Portlet interoperability. The main task of this paper is to construct and deploy (service release) ontology, find out the concept of the power of public information model CIM about our project, create an XML format file with tools such as Protégé . This paper will elaborate on the use of object-oriented constructed method for constructing the ontology. The construction of the ontology tree provides the foundation of Web services’ semantic annotation.
Research Review of Recycling of Nonmetal Fraction from Waste Print Circuit Boards Treatment
Authors: Han Yue Bin , Li Guang Ming , He Wen Zhi
Published: August 2014

Waste printed circuit boards (WPCBs) treatment has been a hot and difficulty topic in handling of electronic waste. Previous research efforts have been put in the methods of separation of metal and nonmetal fractions and how to recycle the metal fractions. The recycling of nonmetal fraction becomes more and more important due to its large volume and hazardous characterizations. In this paper the recycling of nonmetal fractions are summarized and future research directions are discussed, providing reference for the WPCBs recycling industry development.
Chemical Process of Carex meyeriana Mire Wetland in Wuyiling in Yichun in Northeast China
Authors: Cao Yue , Li Ji Guang , Ren Yi Bin , Liang Qiang , Wang Qiu Bin , Sun Hui , Xue Ju Kun
Published: August 2014

The content of total and soluble elements in different soil profiles of Carex meyeriana mire wetland changed in different seasons, and moved in deep horizon of soil. The correlation among each element in soil profiles was different. As far as the element content of Carex meyeriana fraction is concerned, nitrogen in laminae, phosphorus and kalium in vagina were the highest content, respectively. The accumulated quantity of elements in laminae was the highest in May and account for 22%, that of August was the lowest with 1%; the content of total kalium in May was the lowest and account for 15%, the lowest occurred in September with a percent of 5%; the content of total phosphorus in August was the highest accounting for 31%, and that of September was lowest with 2%.
Theoretical Chemical Investigation and Detonation Characterization of AAOF and ACOF
Authors: Yan Biao , Zhou Hong Yu
Published: August 2014

3-Amino-4-aminoximidofurazan (AAOF) and 3-Amino-4-chloroximidofurazan (ACOF) are important precursor of synthesizing new furazanon (furoxano) energetic compounds. The density functional theory (DFT) method of the Amsterdam density functional (ADF) was used to calculate the geometry and frequency of AAOF and ACOF. The detonation velocity (D) and pressure (P) of the two compounds were estimated using the nitrogen equivalent equation according to the experimental density. Results showed that the initial decomposition step of AAOF and ACOF is the loss of OH from N4, the changed in group have some effect on HOMO, but this have little effect on HOMO, AAOF has better thermal stability and detonation performance than ACOF.
The Catalytic Properties of Copper Catalysts Prepared by Coprecipitation Method
Authors: Li Hong Ya , Zhang Tian Tian , Yan Biao
Published: August 2014

A series of copper catalysts were prepared by coprecipitation method and used for treating the Acid Red B wastewater with catalytic wet air oxidation method. Various parameters which influence the activity the catalyst in the process were optimized. Results showed that when (NH4)2CO3 was used as precipitating agent, and the concentration was 0.8mol / L, precipitation temperature was 40 °C, calcination temperature was 600 °C, the copper catalysts prepared by direct addition method showed better activity in treating the wastewater.
The Preparation of Iron Ore Tailings Bio Ceramic Filter Material and Domestic Sewage Treatment
Authors: Zhu Xiao Li , Yu Jian Yuan , Wu Zhan Xing , Yao Lin
Published: August 2014

The experiment by iron ore tailings as the main raw material, add a small amount of fly ash, coal gangue, limestone and biological admixture, the preparation of iron ore tailings bio-ceramic filter material. The effect of the material proportion and sintering temperature and the ball size on the bio-ceramic filter material processing sewage pollutant removal efficiency was investigated. Research shows that the optimal proportion of bio-ceramic is: 86%iron ore tailings, 6% coal gangue, 4% fly ash, 3% limestone, 1% biological admixture. Under the condition of sintering temperature 1100 °C, bio-ceramic size 3 ~ 5 mm, the bio-ceramic filter material of COD removal efficiency 80% and turbidity of sewage 71% respectively. Through bio-ceramic filter material further analysis of XRD and SEM, in the sintering process of minerals such as sodium feldspar, quartz, hematite, together, make bio-ceramic has high strength. Internal porous bio-ceramic surface is rough at the same time, and the specific surface area is larger. Bio-ceramic has good adsorption performance, therefore, is helpful to remove the pollutant in the domestic sewage.
Discussion on Leakage Detecting Techniques for Natural Gas Pipeline
Authors: Shi Zhen , Yu Jian Jun
Published: August 2014

Natural gas pipeline leakage will directly threaten the safety of pipeline facilities as well as people's life and property, thus causing larger malignant accident or indirect losses. Therefore, timely and accurately found natural gas pipeline leakage, leakage position and leakage measuring tool have great significances. This paper summarizes all kinds of technical methods of natural gas pipeline leakage detection and safety warning, discusses the basic principle, scope, technical maturity, the advantages and disadvantages.
Synthesis of Novel Alkyl Phosphinate Double Salt and its Application in PA6
Authors: Chen Jia , Zhang Yuan Fang , Du Da Jiang , Liu Ji Yan
Published: August 2014

In this paper, zinc magnesium methyl cyclohexylphosphinate double salt (ZnMg (MHP)) was synthesized and used as flame retardant for PA6. The structure and the flammability of ZnMg (MHP) had been studied. The results presented that the LOI of PA6 with 20wt% filler loading improved from 21.2% to 31.4%, and the vertical burning test passed UL94 V-0 rating. TG analyses showed that ZnMg (MHP) had excellent thermal stability. DSC displayed that ZnMg (MHP) melted at 235°C. The tests of flammability revealed that ZnMg (MHP) had a strong inhibition effect on heat release rate (HRR) of the composites.
An Application of Computer Image Processing Technique to Decoration Pattern Design
Authors: Yang Xu Guang , Lin Qi Hui
Published: August 2014

The rapid development and image processing technique to the computer is updated day by day, which lead the decorating pattern design to extend into the computer aided design from the original manual drawing.Decorative pattern is more huge miscellaneous from the contents with changeful graphics form, In this kind of advanced tool, with the help of computer of decorative pattern from figure element content changes to the graphics can carry on a processing and save in the form of digital data, can also make use of the computer to carry on the conventional image to it what processing technique falls through processing,thus form decorate pattern special manifestation and characteristics of the new era.
Commonly Used Correction Model Comparison, Improvement and Precision Analysis of Radiation Remote Sensing Image
Authors: Liu Xiao Li
Published: August 2014

Remote sensing image radiation correction is a key technique for quantitative remote sensing data processing is essential, especially in the surface undulating mountains, surface radiation affected by topography, the radiation correction of remote sensing inversion error can reduce the surface information, so as to maximize the accuracy of remote sensing investigation of mountain area. In this paper, the ETM image in mountain area of Western Beijing as an example, application of cosine correction model and Sandmeier correction model of image are topographic radiation correction, and then proposed an improved Sandmeier correction model, and carries on the precision analysis from the visual effect and quantitative parameters. Experiments show that, the improved Sandmeier correction model eliminates the influence of topography, greatly improving the accuracy of remote sensing image Topographic Radiation correction.
Study on Astronaut Self-Rotation Methods in Space Flight
Authors: Ma Chao , Liu Yu Qing , Zhu Xiu Qing
Published: August 2014

Astronauts will suffer the orientation transformation problem without external force condition in spaceflight mission. Based on the establishment of human body system dynamics equation, the recommended control methods are put forward to guide the astronauts to make their orientation changed. The movement process is simulated through use of ADAMS to confirm the feasibility of method. Finally, simulated weightlessness environment is developed to demonstrate the advantages of the recommended control method compared with other control methods. The results show that using the control methods developed in this paper will make astronauts spend less time and smaller joint torques in performing body rotation about single axis in simulated weightlessness. There has certain reference significance for astronauts to conduct orientation transformation in spaceflight.
Design and Implementation of Public Bicycle Rental System Service Platform Based on IOCP and JSON
Authors: Chen Ling Ling , Huang Jun
Published: August 2014

In view of the practical application, this paper presents a communication system based on IOCP+JSON, using fewer threads to provide services for more users, can solve the user concurrency. Optimize a compression algorithm for JSON data to reduce the data repetition rate and network traffic consumption, apparently shorten the data transmission time and improve the system performance.
Research of the Intellectual Property Protection Based on the Internet Information Utilization
Authors: Zhao Li Min
Published: August 2014

The Internet has greatly expanded the scope of the use of network information resources and scale, people search and ease of access to information resources and autonomy is also greatly enhanced, but also led to information sharing network of intellectual property protection and infringement issues. This article lists the use of network information resources and violations of copyright law and civil law from the perspective of legal thinking.
Research on Physical Layer Network Coding Technology in Wireless Network
Authors: Cheng Chuan Gong
Published: August 2014

Recently, Network coding has been proved to be the breakthrough in the research field of network and communication. It is an effective technique to increase network capacity and improve the robustness and reliability of networks. In this paper, there is application of network coding in wireless network. In order to improve the reliability and the throughput of wireless network, we do extensive research on network coding incorporated with the multicast communication in WLAN, the routing optimization in multi-hop network and the retransmission efficiency for wireless broadcast system, and focus on the protocol design and the theory for the performance analysis. On the basis of introduction on basic idea and method of network coding, we proposes a new physical layer network coding scheme for two-way relay channel model based on a belief propagation approach. Then we make performance analysis through numerical simulation.
Theoretical Investigation on the Role of Amine Bases in Stabilizing the Key Intermediate of Proline Enamine Carboxylate in Proline-Catalyzed Asymmetric Reactions
Authors: Tian Chang Ke , Fu Ai Ping , Zhao Cheng Yan , Tian Feng Hui , Duan Yun Bo , Wang Zong Hua
Published: August 2014

Quantum mechanical calculations have been performed to study the equilibrium among the key intermediates (iminium ion, oxazolidione, and enamine) in the proline-catalyzed reactions under base-free and base-present conditions. The results confirmed that the tautomeric equilibrium among these species can be tuned by the basic additives. The computations satisfactorily rationalized the experimental observations and provide a clue on how to stabilize the enamine intermediates.
The Research of Public Physical Training Service System Based on Cloud Computing
Authors: Wu Hong Jiang , Zhao Hai Yan
Published: August 2014

This paper is aiming at establishing a commonality fitness service system, which can support national fitness service, rapidly make reflection and satisfy mass information storage and treatment. It can offer common service platform combined resource with space for the public.
A Localization Algorithm of Nodes Based on Hypersphere Granular Computing in Wireless Sensor Networks
Authors: He Yong
Published: August 2014

This paper proposes a node localization algorithm based on super chondritic calculation, super chondritic calculation scanning of a training set is able to complete the training process, the training has characteristics of fast, the problem of node localization for wireless sensor networks. Firstly, according to the related parameter information for the location of wireless sensor nodes, a multi input, multi output problem of training set, and then through the methods of grid division, location area, the original training set into the classification of multi input, single output training set, the super chondritic algorithm by scanning training, in order to get the relevant parameters, and the estimation of the unknown node location. Simulation results show that the proposed algorithm has better positioning accuracy.
Research on Chaotic Characteristics of Diary Return Water Time Series in Qingtongxia Irrigation Area
Authors: Zhao Xin Yu , Gao Jin Long , Gu Peng Fei , Huang Pei
Published: August 2014

For the problems that the characteristics of diary return water time series in Ningxia Qingtongxia Irrigation area ,this issue studied it by using time series analysis, phase space reconstruction and saturation correlation dimension and other methods.The research results showed that diary return water time series in Qingtongxia irrigation area is a non-white noise stationary time series, and it has the chaotic characteristics, the saturation correlation dimension of it is 1.81, the embedding dimensionality of it is 9.
The Planning Study of Disaster Comprehensive Prevention of Nanjing City
Authors: Chen Zhi Long , Wang Xing Bin , Yang Hong Yu , Yang Xiao Bin , Xie Hua
Published: August 2014

The outer space of city, construction space and underground space are city’s material spaces with disaster prevention function and are direct carriers of disasters, this paper propsoses the concepts and approaches to integrate, recombine and share city spaces based on the current situation of city’s disasters and spaces for disaster prevention, puts forward ideas and concepts including “ active disaster prevention”, “comprehensive disaster prevention”, “evacuation center” combining the latest research development of nanjing city’s comprehensive disaster prevention planning, and conducts deeper research in aspects of improving the disaster prevention function of city space and inspring planning and construction of city disaster prevention.
Software Design for Theory Analysis of Underwater Electromagnetic Field in Shallow Sea Environment
Authors: Cui Pei , Wu Liang , Jiang Kai Na
Published: August 2014

The driving sources of the marine environment underwater electromagnetic field are complicated, the environmental parameters working on field source amplitude are numerous. The paper filters out the main respective factor through comparative analysis, on the basis of which composes theoretical analysis software of electromagnetic field underwater and the main environmental factors. The result shows that it is easy to get the variations of field source amplitude and main environmental parameters by setting the main environmental parameter values and field source forms.
Aging Risk Between China and Russia Based on the Catastrophe Series
Authors: Fan Ying Bing
Published: August 2014

There are two main risks in aging society. First, macroeconomic stall caused by labor shortages. Second, the basic pension insurance fund income over expenditure, causing social instability. Now there is not research about risk assessment. Russia and China have different social system, based on catastrophe series method to create aging risk evaluation system.This paper evaluate the aging risk from the impact of the economic system and the social systems. This method combines the quantitative indicators and qualitative indicators, and it doesn’t need to determine the index weight. Finally China and Russia have been at the severe aging risk.
Facility-Optimizing Plan for Intersection System Based on Intelligence Traffic Management Technique
Authors: Huang Bao Jing , Ma Wei , Dong Hong Hui , Jia Li Min , Qin Yong , Li Hai Jian
Published: August 2014

In order to improve bandwidth utilization and reduce maintenance costs of each system equipment of fast road/highway on Beijing second ring road intersection, the article proposes a countermeasure of using integrated system equipment access method to optimize Beijing fast road/highway on intersection. Compared to the original integrated system equipment access method, this method can effectively improve the bandwidth utilization of the system equipment about 35% and save the cost about 68.1% based on maximum effective retaining the original system equipment.
Performance Evaluation of Logistics and Distribution
Authors: Yu Hang , Zhang Kai
Published: August 2014

Continuously improve and accelerate the pace of urban life people's living standards, people paid more attention to their health and diet increasingly high quality Only a scientific evaluation and analysis of its performance to be able to correctly determine the actual operating level of distribution, improve operational capacity, thereby increasing overall efficiency. From the theoretical basis of this paper, logistics and distribution of fresh produce to undertake studies to gray relational analysis of logistics indicators screening, and finally the use of performance linear weighting method to produce logistics and distribution processes were evaluated.
Research on Electronic Commerce Warehouse Logistics Management System Based on Cloud Computing
Authors: Shi Hong , Ren Peng , Zhang Xue Qin
Published: August 2014

The core of "cloud computing" is to provide professional technical service, this thesis mainly use the excellent quality service of "cloud computing" to solve the current problems existing in the electronic commerce warehouse logistics management, especially the small and medium-sized logistics warehousing enterprises is faced with lack of maintenance funds, backward technology,shortage of network maintenance talent etc..
The Empirical Research of the Relationship of Transportation Listed Company’s Capital Structure with Enterprise Value
Authors: Fu Jing Jing
Published: August 2014

At present, the research of the relationship of capital structure with enterprise value has always been a hot issue in business circles and theoretical cycle. Since the relationship of capital structure with value is different in different industries, distinguishing the industry has practical significance for deeply study. This paper has made empirical research of enterprise value and capital structure with 29 marketing enterprises in our country transportation industry as the samples. The research indicated that there is positively relationship between listed company’s capital and enterprise value in our country transportation.
2Hz-Electroacupuncture Attenuates Conditioned Cue-Evoked Heroin-Seeking Behavior and Increase CB2-Rs Expression in Relapse-Relevant Brain Regions in Heroin-Addicted Rats
Authors: Chen Lin , Ma Bao Miao , Yue Kai , Ru Qin , Tian Xiang , Xiong Qi , Liu Lu , Li Chao Ying
Published: August 2014

In order to investigate the influence of electroacupuncture on heroin seeking behavior and the expression of CB2-Rs in the relapse-relevant brain regions, heroin self-administration rat model which represents the heroin relapse behaviors was developed with progressive fixed ratio program. The model rats were randomly divided into 3 groups: control group, heroin-addicted group and 2Hz electroacupuncture group (stimulating on acupoints zusanli and sanyinjiao). The expression of CB2-Rs in the relapse-relevant brain regions were assessed with immunohistochemistry technologies. The reinstatement of heroin seeking behavior induced by conditioned cue priming showed that compared with the heroin-addicted group, active pokes in the 2Hz electroacupuncture group decreased significantly (p<0.05). Compared with the control group, the expression of CB2-Rs in prefrontal cortex (PFC) and nucleus accumbens (NAc) was significantly decreased (p<0.05) in heroin-addicted group and increaseed significantly recover (p<0.05) in the 2Hz electroacupuncture group. Our present results showed that 2Hz-electroacupuncture could attenuate the conditioned cue-evoked heroin-seeking behavior and the inhibitory effect was mediated partially by the increase CB2-Rs expression in relapse-relevant brain regions in heroin-addicted rats.
Application of AHP in Teaching Quality Evaluation for Polytechnic
Authors: Zhong Yin Zhen , Jiang Wu Xue , Gao Wei Chun
Published: August 2014

According to the status of vocational teaching quality evaluation, this paper will have an analysis of the AHP that is used to quantify the qualitative classroom teaching quality evaluation. It is applied to determine the weights of evaluation factors, to build a hierarchical model of teaching quality evaluation, to analyze implementation steps of AHP: construct hierarchical model-determine the weight of each factor-derived decision alternatives. Questionnaire analysis has proved that this method not only can be used to have a comprehensive evaluation of teaching quality but also to have an evaluation on the secondary index. The method is scientific, rational and has a high application value.
Research on College Students' Interpersonal Flat-Form under New Network Media Environment
Authors: Chen Ji Dong
Published: August 2014

Using the empirical analysis, and a study object with the Shenzhen Polytechnic colleage, we make the investigation and research on college students ' interpersonal flat-form under new network media environment through the questionnaire survey.What is more, we also have a concrete analysis for the following aspects, such as its use and cognitive from students towards the new network media.Meanwhile,we recommend university should state his significance of the new network media to the university life through systematic course or training, guiding the graduates to know and understand its essence and historical development. Last but not least, it can cultivate students’ media evaluation and application development.
The Construction of Open Course Platform of Teaching Resources Oriented to Local Colleges and Universities
Authors: Liu Hai Ying , Lu Rong Hua
Published: August 2014

Given the current situation that foreign open courses and high-quality curricula of domestic elite colleges cannot be used directly by our teachers and students, a platform for teaching resources of open course has been founded. Relying on the platform, carefully chosen domestic and foreign high-quality curricula relevant to the disciplines of our college together with our own high-quality curricula are classified and presented to our teachers and students for free, and shared conditionally by learners outside the college. After the initial commissioning, the platform has been running smoothly.
The Design and Implementation of Student Management Information System under the Campus Network Environment
Authors: Lv Yan , Li Xiang , Gao Li Na
Published: August 2014

This paper describes the design and implementation of student management information system under the campus network environment. The main purpose of developing student management information system based on campus network environment is to realize the automation of the management information of university students. From the aspects of the development background, the design goal, information share, functional design, technology characteristics, and operation of its interface to introduce the management information system of college students.
Research on the Design and Realization of Electrical Training System Based on the Virtual Reality Technology
Authors: Feng Bao Zhen
Published: August 2014

This paper is mainly about the process of design and realization of electrical training software based on the virtual reality technology. Some modern computer technique are used in this paper, such as, interface design technology, animation design and manufacture technology, 3D modeling and rendering technology, virtual reality technology, network technology, database technology and the Man-machine interface sensor and communication technology. The electrical technique skill education in occupation post analysis, training project and key information extraction, the analysis of the teaching object have been realized. The overall structure of the system design, media design, copy and script writing have been accomplished. The virtual reality simulation software for technique training introduced in this paper has the characteristics of strong professionalism, situations, procedural, interactivity and intelligence. It is more realistic, more manufacturability and more interactivity than the traditional simulation teaching software. Therefore, it can achieve better teaching training effects. Furthermore it has common hardware training equipment incomparable advantages.
Anti-Tumor Effects of a Newly Cloned Serine Protease from the Marine Annelid, Arenicola cristata
Authors: Zhao Chun Ling , Yu Wen Jing , Ju Ji Yu
Published: August 2014

We cloned a new serine protease gene from the marine annelid,Arenicola cristataby rapid amplification of cDNA ends. The full-length cDNA of 901bp contained an open reading frame of 774bp encoding 258 amino acids. Sequence analysis of the deduced amino acids indicated that this protease belonged to serine protease family and contained highly conserved sequence GDSGGP. An expression vector, harboring the mature peptide ofArenicola cristataprotease, was constructed and transformed intoE.coli. The purified recombinant protein could inhibit proliferation of cancer cells in a dose-dependant way and induce apoptosis. These results indicated that the recombinant protease ofArenicola cristata, as a new member of serine protease family, might be valuable in developing anti-tumor agents.
Biodistribution and Toxicity Study of Titanium Dioxide Nanoparticles of Different Sizes after Intravenous Injection in Mice
Authors: Fang Jie , Yuan Lu Lu , Yao Chen Jie , Wang Yan Li , Wu Ming Hong
Published: August 2014

Titanium dioxide nanoparticles (TiO2-NPs) are widely used in many fields. The bio-distribution and toxicology of different sizes (25 nm and 50 nm) of TiO2-NPsin vivois evaluated in this paper. The results of quantitative distributionin vivoshow that it is difficult for TiO2-NPs to excretion clearly from tissues and organs. At the endpoint of experiment of different groups, there are still many TiO2-NPs located in the main organs such as spleen, liver and lung after 120 days. Blood biochemical parameters keep unchanged compared with control group. However, pathological results show that lesions in spleen, liver and lung where TiO2-NPs particles are mainly accumulated and retained are getting serious with the time prolonging. The results indicate that TiO2-NPs are low toxic to mice but may have some potential effects on liver and kidney functions after exposure long time. The fundamental importance information gained from such a study will give the guidance on the application of TiO2-NPs.
Expression of a Fusion Protein of Human Proinsulin with Glutathione-S-Transferase in Escherichia coli
Authors: Di Zhi Xin , Ma Jian Zhong , Wang Yong Gang
Published: August 2014

A DNA sequence encoding for the human proinsulin was designed according to the codon bias of Escherichia coli and then chemically synthesized. The synthesized DNA fragment was subcloned into pGEX-3X for expression in E. coli BL21 (DE3) and E. coli BL21 Star (DE3), respectively. Conditions for the highest expression of the GST-proinsulin fusion proteins were optimized. These conditions are that cells of E. coli BL21 star (DE3) are incubated in 100mL of the LB medium with 2 mmol/L IPTG and 60μ?g/mL ampicillin at 26oCfor 4h. After disrupted E. coli cells with ultrasonication, inclusion bodies were precipitated from cell lysis and washed. Fusion proteins from the inclusion bodies were redissolved in 8mmol/L of urea. After dialysed in purified water, fusion proteins were analysed by SDS-PAGE. The purity of the fusion protein is about 80.5% in total. The fusion protein from SDS-PAGE was further identified by mass/mass spectrum. GST in the dyad protein is confirmed by the 9 matched sequences. However, the left part is proved a polypeptide of which is completely different from the human proinsulin.
Synthesis and Detection Experiments of a Biomolecule Detection Probe Based on Fluorescence Changes
Authors: Wang Jun , Ren Da Hai
Published: August 2014

The sensitivity of fluorescence probes built upon the resonance energy transfer is not high enough at present. We built a fluorescence probe with high sensitivity (SA-488-sub-nanogold) by means of the fluorochrome Alexa488 (SA-488) labeled by streptavidin, nanogold, and biotin-subpeptide. When the fluorescence molecule SA-488 binds with the nanogold by biotin-subpeptide, the fluorescence intensity will be suppressed because of resonance energy transfer. If there are molecules under test, the energy transfer will be blocked, by which we can get the molecule content from the fluorescence intensity. Using this probe, we acquired a lower detection limit and a higher sensitivity for biotin detection.
Determination of Rhodium in Waste Rhodium-Loaded Carbon Catalyst Samples Using Teflon Pressure Vessel-Assisted Sample Digestion and ICP-AES
Authors: Wei Xiao Juan , Pan Jian Ming
Published: August 2014

A novel method for the determination of rhodium in waste rhodium-loaded carbon catalyst samples was established by inductively coupled plasma atomic emission spectrometry after samples digested by Teflon pressure digestion vessel with aqua regia. Such experiment conditions were investigated as the influence of sample dissolution methods, digestion time, digestion temperature and interfering ions on the determination. The results indicated that the digestion effect was optimum with samples digested 8 hour at 180 °C. Al, Fe, Mg, Ca and Si in samples had no effect on the determination of rhodium. Experiment indicated rhodium concentration within the range of 0 ~ 150 mg L-1 had a linear relation with emission intensity. The recovery was 99.20% ~ 100.73 %, and the relative standard deviation was 1.8 %. A satisfactory result was obtained when applying the proposed method in the practical sample.
Determination of Multi-Class Pesticide Residues in Lettuce and Cucumber by GC-MSD and the Degradation Study on Vegetables Simultaneously
Authors: Kang Chang An , Wang Le , Li Xiu Feng , Jia Juan Juan , He Juan , Zhang Jian , Wu Zhi Qiang , Peng Gang Hua
Published: August 2014

A multi-residue method for determination of pesticide residues in vegetables, using ethyl acetate extraction and determination by means of GC–MSD, is presented. The method includes as many as 27 pesticides such as organophosphorous, organohalogen, organonitrogen and pyrethroids pesticides, which are in common use or forbidden on vegetables in China. After extraction with ethyl acetate, the extract is concentrated and evaporated to dryness and redissolved in ethyl acetate before injection on GC–MSD. The recoveries were obtained in the range 70–100% with 5 exceptions in lettuce and 7 exceptions in cucumber, relative standard deviations between 1.92% and25.39% by means of standard addition to the vegetables blank extracts. The degradation of some pesticides in the 27 was studied by the method developed, the mixture of the pesticides commercial formulations was sparged on the vegetables, then the residues of samples obtained in different time were determined by the developed method. The determination indicated that (all pesticides were used as the instruction): 1.a pesticide, used on different plants, the quantity of the pesticide on the part for people’s dietary differs greatly; 2. some pesticides, degradating slowly and with a large dose, are inappropriate used on vegetables which remain on cropland for a short time. This research does not develop models for pesticides degradation, but provides some data on the safe intervals of the pesticides and a potential method for the study of multi-class pesticides safe intervals on a plant simultaneously.
Design of a Downhole Motor Drilling Experimental System
Authors: Huang Ming Xin , Wang Li Guang , Liu Huan , Liu Bao Lin
Published: August 2014

In order to research the technology of impregnated diamond core bit and turbodrill which can be applied to the oil and geological field, this paper here designed a set of downhole motor drilling experimental system. We built a virtual prototype simulation model by using Solid Works which can help us dynamically design and optimize the key components and the overall structure of the whole system. In this paper, virtual assembly is available to assess the feasibility of the overall design. While the model simplification and the simulation check of the key components were carried out. Finally, we will be able to verify the correctness of the virtual prototype simulation analysis by setting up a physical prototype.