bluuebunny/crossref_metadata_2025 huggingface dataset:
New Machine for Complex Structure Decoration Materials
Authors: Luo Jian Guo , He Mao Yan
Published: June 2012

A new type of machine for complex structure decoration materials based on hybrid cubic manipulator with six degree of freedom(DOF) suggested in view of traditional serial manipulator and parallel manipulator, three dimensional translation and rotation of output shaft obtained through lineal driving. Define the description of spacial moving capability of common couples and translation base and rotation base of mechanism, based on the fact of mechanism consists of components, a new description method by topological graph theory of components relationship suggested, new description of serial mechanism and parallel mechanism and hybrid mechanism obtained with this method, description elements include component pane and constrained component pane and component relationship line and constrained component relationship line and spacial relative moving capability between adjacent components. DOF(degree of freedom) of hybrid mechanism analysised with example based on the definition of dimensionity of branch spacial moving capability and mechanism spacial moving capability, necessary and sufficient condition of nonsingularity of mechanism presented. Method of analytic geometry used to find the regular cuboid of the reachable working space shape of mechanism, the volume of the reachable working space rest with the limit of translation of couplers, its influential factors obtained, limit length of guideway etc. are the primary influential factors.
System Dynamics Based Research on Performance of Supply Chain
Authors: Ji Shou Wen , Xie Qing Xia , Fang Yuan Chen
Published: June 2012

This paper analyzes the intrinsic relationship between the supply chain structure and its key factor, and builds a system dynamics model of supply chain under the advance payment financing business. Establishing the dynamic equations and simulating with Vensim simulation software, the result has been proved that prepayments financing has a positive impact on the supply chain performance.
Research and Design Embedded Security Computer Based on TMR for Train-Ground Communication System
Authors: Zeng Xiao Qing , Zhu Jing , Xiong Tian Sheng , Shen Tuo , Wei Le Xiang
Published: June 2012

Train-Ground communication system is mainly used to complete the communication between the train and the ground, the data which is produced by security computer system is vital to safe operation. The paper focus on the reliability and security technologies of embedded computer system and evaluates the reliability of TMR (Triple Modular Redundancy), which is based on the existing research of security computer and aimed on the equipment of CBTC Train-Ground communication system. The technology of CBTC Train-Ground communication is studied and the structure of the TMR for Train-Ground communication system is designed in the paper. Furthermore, the fault - safety circuits，electromagnetic compatibility technology and rail traffic-related safety standards are analyzed. Finally, the Train-Ground infrared communication security transponder system based TMR is applied to Shanghai People's Square Line 8 subway train’s double-door control system.
Traffic Information Collection System for Congestion Identification and Relief
Authors: Jiang Tian , An Jing , Zhang Hao Zhi , Qian Zhen Guo
Published: June 2012

While research focuses on using available traffic data sources to identify and relieve traffic congestion, less work is devoted answering the question of how and where to collect traffic data, so that traffic control systems can perform in an optimal, and cost-efficient manner. In this paper, We present a framework to assess traffic detection systems, by introducing the level of detection as value to allow for an objective comparison of multiple detector placement scenarios. The framework allows the usage of the framework for network operations, as well as planning purposes. By translating traffic operation goals into data demand functions, and detector capabilities, combined with their location, into data supply functions, it is possible to optimize detector locations with well know tools from operations research. The latter one is important, since it allows for including additional boundary conditions, such as costs.
Research on Dynamic Traffic Flow Forecasting Based on Improved Particle Swarm Optimization Algorithm and Neural Network Theory
Authors: Qi Bo , Ma Chang Xi , Sun Li
Published: June 2012

Focused on urban traffic flow issue, the dynamic traffic flow forecasting model is established based on the improved particle optimization algorithm and nerve network theory. Taking the macro dynamic traffic flow as the model, the paper analyzes primarily the features of traffic flow by means of stage-distinguishing method, researches the improved particle optimization algorithm and nerve network theory further and establishes the dynamic traffic flow forecasting model. Finally, it utilizes this model to forecast the traffic flow on North Binghe Road in Lanzhou City. All the results demonstrate that this forecasting model is of higher prestige and proper availability.
Modified Monkey Algorithm and its Application to the Optimal Sensor Placement
Authors: Yi Ting Hua , Zhang Xu Dong , Li Hong Nan
Published: June 2012

Optimal sensor placement (OSP) technique plays a key role in the structural health monitoring (SHM) of large-scale structures. In this paper, an optimal sensor placement (OSP) method based on a new intelligent algorithm, i.e., monkey algorithm (MA) is proposed. Considering the limitation of MA and the characteristics of OSP, the integer encoding to solve the location of the monkeys is proposed. The diversity of the monkeys is increased by introducing the hamming distance in the initial location, in order to improve the capacity of global search, and the random disturbance mechanism of the Harmony search is introduced in the process of climbing to improve the capacity of local search. Finally, taking the Dalian World Trade Building as an example, the OSP schemes are chosen. The numerical example demonstrated the feasibility and effectiveness of the proposed method.
Signal Optimization Design of the Mid-Block Crosswalk
Authors: Chang Yu Lin , Sun Fei
Published: June 2012

This paper proposes the traffic signal optimization design for the street crosswalk between coordinated adjacent intersections. The design has taken the pedestrian waiting tolerance limit time into consideration as one of the constraint conditions to obtain the pedestrian green phase duration. If the green phase duration is not sufficient for pedestrian crossing safety, the methods of twice crossing street or two chances of crossing can be applied according to different situations. The common red time of two intersections is analyzed to build delay functions by using of motorcade dispersion and traffic flow rate relationship, and timing optimization parameter can be worked out to minimize the total vehicle delay, thus determining signal phase difference. The result shows that this design may ensure the pedestrian safety and reduce the pedestrian delay.
Prediction of Atmospheric Delay of Medium and Long Distance GPS Reference Station Network
Authors: Guo Qiu Ying , Wang Jing Wei , Han Bao Min
Published: June 2012

Integer ambiguity resolution is a prerequisite for GPS reference station network. Due to the presence of distance errors in the double-differenced data (principally atmospheric delays), the convergence time of ambiguity in medium and long distance GPS reference station network is about a dozen minutes and even dozens of minutes. And in the case of loss-of-lock, cycle-slips or new rising satellites, the integer ambiguity value have to be redetermined over and over again. But for the application of GPS network RTK, the resolution of ambiguity needs to be determined real time as possible. This paper described techniques to predict atmospheric biases using exponent model and AR model from derived the atmospheric delays by previous epochs, which is helpful for rapid solution of ambiguity and generation of error correction in the GPS reference station network. Experiment shows that the precision of predicted atmospheric delays is about 2-3 cm using temporal- and spatial-correlation exponent model and AR model in medium and long distance GPS reference station network.
Psychological Needs of the Aged and their Indoorspace Evironment Design
Authors: Dong Wen Ying , Wen Zheng Jun , Chen Zhu
Published: June 2012

Under such context of people-oriented concept and an increase in the proportion of the elderly in the population, our country has seen a mature development in the interior design industry, thus more attention has been paid to the living space of the elder group. However, the present situation of this industry shows that the design standard for old people wasn't promoted effectively. Concerning their psychological characteristics and the psychological needs of the elderly primarily, the point of this article lies in figuring out the proper design to resolve the old people’ knots, thus achieving their sense of belonging, improving the quality of life in their later years, even extending their life, to create a real home for old people.
Study on Grades of Freeway Meteorological Disasters by Risk Matrix
Authors: Zhang Hao
Published: June 2012

Meteorological disasters have a negative influence on highway safety operations. In order to efficiently enhancing emergency response capabilities for prevention of meteorological disasters and to carry out study of the ranking of risk factors about meteorological disasters, fuzzy mathematical method (expertise method) was applied to estimate the two indexes of risk factors of meteorological disasters in freeway normal operation: probability of risk factors and losses value of risk factors. Risk matrix method was used to analyze qualitatively and quantitatively the potential risk factors of meteorological disasters. By analyzing the potential risk factors of meteorological disasters in the normal operational process of a freeway in south China, it came to that risk level of typhoon was divided into four levers, dense fog and heavy rain were three, thunderstorms and heat were two. The result was consistent with the actual thing, and it provided a good analytic basis for follow-up emergency strategic planning.
Application of Parametric Modeling in Optimization Design on Aluminum Alloy Wheels
Authors: Yi Deng Li
Published: June 2012

With the development of lightweight car，the applications of aluminum alloy wheels are changed extensively. At present, there are many disadvantages in aluminum alloy wheel profession of my country such as the blindness in design, the long period, material consumption, the high cost and so on. In this paper, the CAD as well as the FEA technology is applied. The parametric three-dimensional model of aluminum alloy wheel is constructed using UG software. Taken the former's thickness and the angle between two formers as variables, the wheels with different sizes and shapes are established. Automobile aluminum alloy wheel hub is built and this is helpful to the development of CAE / CAM in the aluminum alloy wheel design.
The Application and Comparison of Two Different Optimization Algorithms in the Optimization Design of Hydrofoil
Authors: Wang Chao , Feng Feng , Chang Xin , Guo Chun Yu , Liu Yang Hao
Published: June 2012

Hydrofoil is the important part of ship design and diverse motion equipment. The optimization design of hydrofoil section on lift-to-drag radio with genetic algorithm (GA) and simulated annealing algorithm are demonstrated, and the method on the hydrofoil section design of the propeller design will be done. Objective function and fitness of every individual are provided by flow solver of panel method. The optimization method on design of hydrofoil section on lift-to-drag is successfully used. The optimization results show the combination of optimization algorithm is feasible at the optimal design of hydrofoil sections. What’s more, a comparison between two different optimization algorithms is made, a conclusion that the simulated annealing algorithm is better then the genetic algorithm is obtained.
Change of Urban Soundscape in Response to Climate Ecology
Authors: Liu Fang Fang , Huang Ling Jiang
Published: June 2012

The new technology causes new type of the soundscape urban environment. However, the present research is mainly about the physical parameter of urban sounds and the urban noise. There has been few studies regarding urban soundscape change in response of climate. This paper analyes the change of urban soundscape from the climate ecology, and the aim is to conclude the relationship between the urban soundscapes and climate, also to benefit the constructive opinion of the urban soundscape, climate and social change.
A Review of Regional Ecological Security Evaluation
Authors: Wang Lin , Pang Ya Song
Published: June 2012

This paper introducts and compares the conceptof ecological security and other related concepts (including ecilogical risk, ecosystem health, ecosystem servers and ecofogical capacity), sums up the review to assess regional ecological security theory frames (including PSR, PSIR,DSR,DPSIR and DPSER) and evaluation methods (including entropy method, principal component analysis, analytic hierarchy process, grey correlation method, fuzzy comprehensive evaluation method, artificial neural networks, matter-element analysis, ecological footprint, landscape ecological security pattern method and digital ecological security model), compares the advantages and disadvantages of various methods, and discussed regional ecological security evaluation method development direction.
Countermeasures for Public Environment Design in Cold Area
Authors: Chen Fei , Lin Jian Qun , Zhu Xun
Published: June 2012

This paper shows some countermeasures for public environment design in cold area. It analyzes influences to people’s life from concept and climate characters of cold area. These measures include layout of architectural complex, rootleness of area culture characters, and buildup of openning space energy. The purpose is to create a comfortable living environment, and to guarantee quality of urban public environment space.
Practical Research on Green Building Evaluation System in Eco-City
Authors: Ma Xiu Qin , Zhao Yan , He Si Qi
Published: June 2012

With the global crisis of resources and environment, and the ecological environment is on destruction，all countries in the world have started to develop green building evaluation system, so the concept of green building evaluation system comes into being. In this paper, according to the research on LEED and Evaluation Rulers for Green Building of China, and basing on the planning and construction status of Eco-city, it is analyzed and evaluated by applying the two green building evaluation systems. According to the research on the two green building systems and the excellent case of the Eco-city, the paper hopes that it can supply some reference values for developing green building in the developing countries.
Employing of Aquatic Plants for Urban Landscape Water Purification in Kaifeng
Authors: Zhao Li Min , Wan Hai Tao
Published: June 2012

The bioremediation technology for urban landscape waters are illustrated in this paper. The characteristics and purification performance of urban landscape waters were introduced. Based on their good effects on nitrogen and phosphorus removal, the landscape plants are recommended as species of aquatic vegetation in phytoremediation of wastewater of urban river.
Effects of Preparation Methods on Characterization and Coagulation Performances of Polyferric Sulfate (PFS)
Authors: Lu Da , Zhang Yu , Zhou Ji Ti , Chen Ming Xiang , Wang Xiao Wei
Published: June 2012

Polyferric sulfate (PFS) is classified two kinds by prepared approaches: (1) alkalization preparation of polyferric sulfate (APFS), (2) oxidation preparation of polyferric sulfate (OPFS). Different properties were discussed about OPFS and APFS, such as basicity (OH/Fe3+), zeta(ζ)-potential, pH. It is concluded that APFS and OPFS with same basicity have different structural feature although they have same compounds and bonds. By comparison with APFS, OPFS and ferric sulfate, OPFS has good charge neutralization capability and exhibits good coagulation performance in turbidity removal for synthetic wastewater. APFS have higher interparticle bridging capability for paper wastewater.
Study on the Adsorption of Methylene Blue by Starch-G-Poly(acrylic Acid)
Authors: Zhang Cai Ning , Wang Xu Man
Published: June 2012

By using grafting reaction, starch-g-poly (acrylic acid) (starch-g-PAA) hydrogel was prepared and used to adsorb methylene blue (MB). Adsorption isotherm and kinetic of the sorption process were studied. Meanwhile, various thermodynamic parameters were calculated. The absorption experimental results demonstrate that the prepared starch-g-PAA is an effective adsorbent for removal of MB from aqueous solution. The adsorption of MB by starch-g-PAA is Freundlich type. Furthermore, the adsorption kinetics analyze demonstrates that the adsorption process follows the pseudo-second-order model, and the adsorption is a multi-step process. Moreover, the calculated thermodynamic parameters indicate the spontaneous and endothermic nature of the adsorption process. The values of adsorption activation energy demonstrate that the adsorption is mainly diffusion-controlled process.
The Adsorption Performance of Furfural Residue for Menthylene Blue
Authors: Ren Guang Jun , Li Si Hao
Published: June 2012

The adsorption performance of Menthylene blue from aqueous solution by furfural residue was studied. The results show that the adsorption of Menthylene blue on furfural residue reached equilibration by 60 minutes. The removal efficiency of Menthylene blue in aqueous solution on furfural residue of Menthylene blue achieved the 95.38% in 50mL 200mg.L-1 Menthylene blue aqueous solution with adding 4g/L furfural residue. The temperature had an effect on the removing of the Menthylene blue on furfural residue, and the adsorption of furfural residue to menthylene blue was decalescence reaction. The relationship between adsorbing capacity (qe) and equilibrium mass concentration (ρe) is in accordance with the isothermal adsorption equations of Freundlich and Langmuir.
A New Kind of Catalyst for Enhancing the Conversion Rate of Fe2+ to Fe3+
Authors: Niu Xiao Qing
Published: June 2012

In poly ferric sulfate production process with pyrite cinder as the main raw material, the sodium nitrite as catalyst is too toxic to be used largely. By orthogonal experiment and single factor experiments, the best reaction conditions were studied for the sodium nitrite as the catalyst, the amount of catalyst is 0.8%, the reaction temperature is 50°C and the reaction time is 60 minutes. According these conditions, the catalyst (CH-2) was used to promote the oxidation-polymerization reaction. Results showed that the use of this non-sodium nitrite catalyst could not eliminate the product toxicity that would be caused by using sodium nitrite catalyst but also make the toxicity of PFS was eliminated and the performance was better.
Study of the Li-Insertion-Extraction Process in Li3Mn0.5Ti0.25O3
Authors: Jiang Jin He
Published: June 2012

Compound [Li3Mn0.5Ti0.25O3] was prepared by a solid state reaction crystallization method. It was an inverse spinel-type metal compound. The extraction/insertion reaction with this material was investigated by X-ray, saturation capacity of exchange, and Kd measurement. The acid treated samples had an ion exchange capacity of 9.7mmol/g for Li+.
Study on Nitrogen Removal Efficiency of Hybrid Anoxic/Aerobic Membrane Bioreactor
Authors: Su Bai Ge , Liu Zhi Qiang , Li Xiao Jing , Xu Xue , Gao Lei
Published: June 2012

Based on fillers theory and traditional A/O-MBR theory, anoxic/aerobic hybrid membrane bioreactor system (A/O-HMBR for short) was modified by adding suspended biological fillers in one of the aerobic tanks of the traditional A/O-MBR, in which the filling ratio of fillers was 8%. The thesis mainly studies the nitrogen removal effect in the A/O-HMBR system when the main influence parameters, such as influent C/N(5,7,10), aeration intensity(15m3/h,20m3/h,25m3/h) and HRT(5h,8h,11h), were changed.The experimental results show that when HRT was 8h, C/N was 7, and aeration intensity was 20m3/h, TN removal effect was best.
Preparation BiTaO4 by Precipitation Method and its Visible-Light Photocatalytic Activity
Authors: Zhang Jing Jiao , Tang Pei Song
Published: June 2012

The single phase BiTaO4was synthesized using Ta2O5and Bi(NO3)3as main raw materials by precipitation process. The products were characterized by thermogravimetry and differential thermal analysis (TG-DTA), powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-visible diffuse reflectance spectroscopy (DRS). The results show that BiTaO4was triclinic crystal with average particle size 100nm, and a band gap of about 2.77 eV. The photocatalytic experiment of BiTaO4shows the good photocatalytic activity for the decomposition of methylene blue under visible-light irradiation.
New Technologies of Purification and Utilization on Mine Water
Authors: Shao Ai Jun , Li Zhi Guang
Published: June 2012

China is a big country of coal production, in the coal mining process, the great massive mine drainage has caused not only the waste of groundwater resource, but also environmental pollution. On the other hand, mining production and life supply water is very scarce. According to the mine water features, the majority of mine drainage water belonging to the mine water containing suspended, the mine water needs to do the necessary purification then can be used. That purification mainly eliminates is the suspended. In this paper, the method of purification and the technological process about mine water are discussed. The main methods of handling are coagulation, sedimentation, filtration and disinfection. According to different characteristics of water quality, different ways of handling and technological processes have to be chosen. Finally, the purification and utilization of mine water are shown through practical examples, Pingdingshan Coal Group Company, Wannian Coal Mine of Fengfeng Group Limited Company and Tangshan Coal Mine of Kailuan Group Company, to have obvious social, economic and environmental benefits.
Study on the Preparation of Nano Fe3O4 Powder and its Properties
Authors: Liu Rui Cui , Jiang Fu Yi , Liu Zi Quan
Published: June 2012

The experiment used iron chloride, iron dichloride and other agents as the main resources to prepare the nano Fe3O4 powder by co-precipitation method. Magnets were used to test the magnetism of the prepared nano Fe3O4 powder samples. And the photo-catalytic degradation of rhodamine B solution was used as the model reaction to test the photo-catalytic activity of the prepared nano Fe3O4 powder. The results showed that the prepared nano Fe3O4 powder samples had good magnetism but low photo-catalytic activity.
Advance of Optimization Methods for Identifing Groundwater Pollution Source Porperties
Authors: Long Yu Qiao , Li Wei , Huang Ju
Published: June 2012

China has to confront the groundwater resources crisis and the deterioration of groundwater environment. Reinforcing the studies on groundwater pollution source identification (GPSI) could be an important support to contamination removing, groundwater protecting, drinking water security, and development of society and economy. Exploring the new theory and method on GPSI could push the studies on ill-posed problems, and improve the techniques of contamination remediation. GPSI has been studied for thirty years, and a brief review is given to conclude the characteristics of GPSI problems. The mathematical simulation method can be classified into four types: optimization method, analytical and regression method, direct method, and stochastic method. A specific review of optimization approaches is given in this paper. The configuration, simulation procedures, common optimization algorithms used by the optimization methods are discussed in detail. Both non-heuristic and heuristic algorithm can be used to solve the PSI problem. The heuristic algorithm is more suitable for complex numerical and field cases, but it is time-consuming. The non-heuristic algorithm, especially the algorithm combined with analytical method, is time-economical, but is not suitable for complicated numerical and field tests. Further researches may focus on more complex GPSI problems, expressing physical chemistry and biological process, improving efficiency and model uncertainty of GPSI modeling.
Performance and Mechanism of Polyferric Aluminum Chloride – Quaternary Ammonium Salt Composite Flocculants in Treating Surface Water
Authors: Sun Cui Zhen , Liu Qing Chun , Zhu Li , Liu Jing , Mu Rui Min
Published: June 2012

A new composite coagulant, polymeric ferric aluminum chloride-polydimethyl diallylammonium chloride (PFAC-PD), was prepared by combing Polymeric ferric aluminum chloride (PFAC) with polydimethyl diallylammonium chloride (PDMDAAC). The turbidity, ultraviolet absorbance at 254 nm (UV254) and specific ultraviolet absorbance (SUVA) removal and flocculating mechanisms of the new composite coagulant and the traditional coagulants (PFAC, adding PFAC before adding PDMDAAC and adding PFAC after adding PDMDAAC) were investigated in treating surface water. The results indicated that the new composite coagulants exhibited better flocculation efficiency than PFAC and successive addition of PFAC and PDMDAAC. The neutralization ability of the coagulants was in the following order: PFAC-PD > PD+PFAC > PFAC+PD > PFAC.
Study of Water Aquaculture Coleus Blumei to Improve the Landscape Water Body Quality in Eutrophic Waters
Authors: Ma Zhan Qing , Jiang Ping , Wen Shu Yao
Published: June 2012

Choose to use different size a coleus blumei，with natural palm tree hair fiber for suspend to carry a body and regulate to go together with heavy to constitute to certainly plant system, observe a coleus blumei the growth condition in water body and improvement fluid matter effect in eutrophic waters. The results showed that coleus blumei completely can give birth very well in water suspend growth；that every coleus blumei could bring about many fibrous roots which reached 0.10cm to 0.15cm in the first day and that the longest fibrous roots reached about 16.5cm to 24.0cm during 15 days. The biomass measurement discovers that the plant more big its biomass increase more big，the plant is more small it the clean increment biomass be more big.The water body clarity raises to from the 41cm to 97cm and compare to change into almost transparent clear water for the muddy lake water；and the concentrations of CODCr,TP and TN were decreases to 80.0%，88.6% and 93.8% respectively.The DO concentrations also kept in certain satisfied level for using the coleus blumei method.
Fabrication and Photocatalytic Activity of Ag/Bi2O3
Authors: Lu Yan , Zhong Jun Bo , Li Jian Zhang , Hu Wei
Published: June 2012

It has been found that the photocatalytic activity of Bi2O3toward the decolorization of Methyl Orange solution can be greatly improved by loading Ag on the surface of Bi2O3using a photodeposition method. The photocatalysts were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy and surface photovoltage spectroscopy (SPS), respectively. 0.5%Ag/Bi2O3possesses the best photocatalytic activity.
Optimization of Calcium Carbonate Precipitation for Bacillus pasteurii
Authors: Duan Tao , Zhu Wen Kun
Published: June 2012

The effects of temperature, pH, precipitation time, reactant concentration, the crystal formation additive on the yield of calcium carbonate precipitation induced by bacillus pasteurii were investigated through orthogonal test. The morphology and structure of the calcium carbonate were characterized by scanning electron microscopic (SEM), Fourier transform infrared spectroscopy (IR) and powder X-ray diffraction (XRD). The results showed that the optimum conditions of calcium carbonate precipitation induced by bacillus pasteurii were temperature of 40oC, pH of 8, precipitation time of 3 d, Ca2+ of 1.5 mol/L, and Mg2+ of 0.05 mol/L. The crystal of calcium carbonate was calcites or mixture of calcites and vaterite. Its morphology and packing density were changed by different external conditions.
Statistical Analysis of Influence Factors on Building Energy Consumption in China by Literature Overview
Authors: Qu Yan , Chen Zheng , Darkwa Jo
Published: June 2012

This paper studies the influence factors on building energy consumption in China. The data resources are extracted from 12 dissertations. By method of analysis of covariance, the effect of each influence factor on energy consumption is discussed. By method of multiple correspondence analysis, the cluster of “low energy factor” is found. By method of extended two-factor theory, the measures to reduce building energy are provided.
Observing Negative Air Ions Concentration in Beidaihe and Negative Air Ions’ Evaluation Standard
Authors: Zhuo Yu Guo , Liu Jun
Published: June 2012

The concept and occurrence mechanism of negative air ions (NAI) was introduced and its health care function was described. Through observing NAI concentration of six spots in Beidaihe in China, NAI evaluation standard which has seven grades is put up and the relationship between negative air ion quantity and human health is clarified clearly.
Characteristics of Nutrients Removal from Stored Algae Anaerobic Biogas Slurry in Artificial Aquatic Vegetable Wetlands
Authors: Zhu Guang Can , Zhao Jin Wei , Zhao Xuan Xuan , Lu Xi Wu
Published: June 2012

We constructed artificial aquatic water spinach wetland and studied its characteristics on removing nutrients from stored algae anaerobic biogas slurry. The results showed that, when the hydraulic loading was less than 0.10m3/(m2•d), the removal efficiencies of TN and TP were more than 95%, and the effluent quality met class A standard of Urban sewage treatment plant emission standards(GB18918-2002). The uptake rates of water spinach on TN and TP were 1.31 mg/(g•d) and 0.23mg/(g•d). The uptake by water spinach was the main pathway for artificial wetlands to remove nitrogen and phosphorus. The TN and TP removed by plant uptake accounted for 60% and 98% of the total removal, respectively. The nitrification potential of artificial aquatic vegetable wetland decreased gradually along the flow direction with increasing declination extent, while the denitrification potential first increased and then decreased.
Antimicrobial Additives from Endophytic Fungus Fusarium solani of Ficus carica
Authors: Zhang Hong Chi , Ma Yang Min , Liu Rui
Published: June 2012

Within our screening program for antimicrobial additives, six compounds were isolated from an endophytic fungus Fusarium solani of Ficus carica. Their structures were elucidated on the basis of spectroscopic analysis. Moreover, all of them showed potent antibacterial and antifungal activities.
Analysis on Relationship of Chlorophyll-a and Environmental Factors in Wuliangsuhai Lake
Authors: Jiang Zhong Feng , Li Chang You , Zhang Sheng
Published: June 2012

Using grey system theory to research relationships between Chlorophyll-a and environmental factors in Wuliangsuhai lake was done in the present study. The effects of physical and chemical factors on chlorophyll-a in Wuliangsuhai lake, were evaluated by using of the gray connection method, providing a row order of those effects, and creating the “advantage factors” that exhibited the greatest effects on chlorophyll-a in wuliangsuhai lake, including temperature、illumination、EC、SD.
Evolution of Heavy Metals Leachability and Speciation in Residues of Sewage Sludge Treated by Microwave assisted Pyrolysis
Authors: Fang Lin , Yuan Na Na , Wu Yi Guang , Zhao Xu Xin , Sun Hong Yuan
Published: June 2012

In this study the sewage sludge are treated by microwave assisted pyrolysis (MAP) with different microwave receptors, and then, the immobilization of heavy metals in the residues are evaluated through the toxicity characteristic leaching procedure (TCLP) and sequential extraction procedure. The volatilization of Cd, Pb and Zn could be decreased by MAPs more efficiently than the conventional pyrolysis (CP). The average leaching percentages of Cu, Zn and Pb in residues produced by MAPs are decreased 90%, 88% and 81% more than the CP process respectively, and no leaching Cd is detected. Moreover, more than 67% of Cu, Pb, Zn and 55% of Cd in residues of MAP speciated into stable phase, which is higher than the metals in the residues of CP. The effect of heavy metals stabilized in residues of MAP was determined in the order as Cd > Cu > Pb > Zn. The results suggest the immobilization of heavy metals in the residues are enhanced in the process of MAP. This novel approach should be of significance in immobilizing heavy metals in residues of sewage sludge.
Supercritical Fluid Extraction of Genistein from Extruded Soybean
Authors: Sheng Gui Hua , Zhou Quan Cheng
Published: June 2012

An optimal condition of supercritical fluid extraction (SFE) for genistein in extruded soybean was developed. Optimal conditions through quadratic orthogonal rotation design were verified. The results from SC – CO2 showed that all five experiment factors tested have significant effects on the yield of genistein. The mathematical model set had close agreements with experimental values. It was found that there were 32 optimal extract conditions under which genistein yield higher than 0.092% were gotten through simulate compute. The optimal extracting conditions were stable and recurrable. SC–CO2 had a potential in the extraction of genistein from extruded soybean products.
Study on the Influence of Phosphorus Removal Effect and Membrane Fouling by Adding Aluminum Salt to A/O-MBR
Authors: Li Xiao Jing , Liu Zhi Qiang , He Hui , Gao Lei , Xu Xue
Published: June 2012

This paper used A/O-MBR wastewater treatment system,which was the combination of membrane technology and the A/O treatment process, which took experiments on the campus sewage, the study was made on the influence of phosphorus removal effect and membrane fouling by adding aluminum salt to the system. The result implied that the phosphorus removal effect of the system was improved significantly after adding aluminum salt. Observation was also taken on when TMP reached the limit value in A/O-MBR system and Al2(SO4)3-A/O-MBR system respectively, which showed that the stable operation time of the reactor that added Al2(SO4)3 was longer.
Physicochemical Properties of Artificial Soil Composed of Sewage Sludge, Fly Ash, and Slag
Authors: Wang Kai Feng , Peng Na , Liu De Liang
Published: June 2012

The pH, electric conductivity (EC), nutrients, heavy metals, water-holding capacity and water permeability of stabilized sewage sludge were investigated by mixing municipal sewage sludge with alkaline fly ash and slag. The results indicate that the evaporation of soil moisture increases and water-holding capacity decreases in these artificial soils with an increase of slag, and the infiltration rate of artificial soils increases to improve its water permeability by adding slag to sewage sludge. The pHs of stabilized artificial soils range from 7.5 to 8.0 for a weak alkaline soil, which tend to be neutral by adding slag to sewage sludge. The ECs of stabilized artificial soils range from 2.93 to 3.71 mS•cm-1, indicating the higher salt content in these artificial soils. The nutrient contents of stabilized sewage sludge are up to a high fertilizer level and available nutrients increase with the increase of the ratio of slag to sewage sludge in these artificial soils. Cd, Ni, Pb, Cu and Zn for all artificial soil treatments are lower than control standards for pollutants in sludge and fly ash for Agricultural use.
Energy Consumption - Economic Growth Relationship and Carbon Emissions in Twelve Provinces of West of China
Authors: Bai Yong Ping , Yang Jing
Published: June 2012

This paper applies the panel unit root, heterogeneous panel cointegration and panel-based dynamic OLS to re-investigate the co-movement and relationship between energy consumption and economic growth for 12 provinces(autonomous regions, municipalities) in West of China from 1989 to 2009. The empirical results show that there is a positive long-run cointegrated relationship between real GDP per capita and energy consumption variables. Furthermore, we investigate three cross-regional groups, namely the stronger-level, medium-level and weaker-level groups, and get more important results and implications. In the long-term, a 1% increase in real GDP per capita increases the consumption of energy by different rates for three groups respectively, and subsequently it increases at different rates in three groups of the carbon emissions in West of China. The economic growth in stronger-level group is energy-dependent to a great extent, and the income elasticity of energy consumption in stronger-level group is over several times than that of the weaker-level groups. At present, West of China are subject to tremendous pressures formitigating climate change issues. It is possible that the GDP per capita elasticity of carbon emissions would be controlled in a range that orients sustainable development by the great effort.
Energy-Saving and Economic Study of Natural Ventilation in City Tunnel
Authors: Mao Jin Feng , Huang Yu Liang , Zhou Jun , Xing Zhe Li
Published: June 2012

City highway tunnel ventilation design is one of the key processes in whole tunnel design. The ventilation design has important influence in ventilation sanitation effect, equipment investment, operations energy consumption and operations cost. On the premise of safety and sanitation, if city tunnel adopts natural ventilation, this can reduce energy consumption, construction cost and operations cost. Combining practical conditions of a project, this paper evaluated three kinds of mechanical ventilation, and analyzed contrastively economic efficiency of the natural ventilation and the jet longitudinal ventilation. At last drew the conclusion that the natural ventilation can reduce the total investment by 30% and has obvious energy-saving efficiency, then put forward the pertinent suggestions to the ventilation construction of highway tunnel.
Ecological Transforming in Industrial Heritage Site: Quarry Park Proposal for Sustainable Development
Authors: Zhu Qian Yi , Zhu Yu
Published: June 2012

The thesis attempt to illustrate two things and their relationship in the city— industrial heritage and ecological urbanism— by focusing on the transformation in industrial heritage site. It starts with the definition of industrial heritage and quarry what is prepare for the later dissertation. From the theory to the case, this thesis tries to explain the questions: How the industrial element and ecological element work on the city together? Why propose in industry heritage site? Why it needs to be changed? After finding its potential and disbennifit, paper gives the answer that how to changes. Finally, the proposal in Lockport is introduced as a case for the ecological transformation strategy of industrial heritage site.
Status and Prospects Analysis of Coal Briquette Technology
Authors: Wen Wu Qi , Jin Shi Qi , Jin Shi Ping , Fang Shun Li , Zhang Xi Lai , Huang Su Yi , Shu Liang Suo , Zhang Yong Xiang
Published: June 2012

This paper analyzes the current energy structure and coal we use, based on clean coal technology in China, one of the current technology development status and prospects of coal were analyzed, and highlights China's Hunan province a coal for flue-cured tobacco production - biomass briquette mix, production test proved its superior performance, the desulfurization rate, burn rate of more than 90%, respectively, and 98%, suitable for promotion.
Atmospheric Phase Screen Simulation Using Zernike Polynomial
Authors: Yan Wei , Chen Zhi Hua , Du Tai Jiao , Wang Jian Guo
Published: June 2012

An algorithm is described which simulates atmospheric phase screen (PS) distorted by von Karman atmospheric turbulence by using Zernike expansion of randomly weighted Karhunen-Loeve function. The statistics of the PS generated by using power spectrum method which is most commonly used for generating PS poorly match up with the theoretical structure function, especially at low spatial frequency, while the algorithm described in the this paper can compensate for this shortcoming. And the accuracy of the PS is verified by comparing with the theoretical results. Furthermore, comparing with the existed methods which also use the Zernike expansion to simulate PS, algorithm presented in this paper is more accurate because the effects of the finite outer scale L0.is included
A Series Connection Scheme of Iterative Learning Control Based on Disturbance Observer
Authors: Liu Chang Rong , Xu Jin Xue
Published: June 2012

In order to reject non-repetitive disturbance and improve the performance of iterative learning control, a series connection of feedback controller and ILC system with disturbance observer is presented. The random disturbance and uncertain model in ILC are studied. The simulation experiments indicate that DOB can reject non-disturbance and decrease the affect of uncertain model in ILC. The system is verified to be effective for promoting tracking performance and rejecting the non-repetitive disturbance in ILC.
The Application of Second-Developed ADAMS on Simulation of Individual Soldier Automatic Weapon
Authors: Zhao Yan Jun , Ge Wen Qing , Xu Cheng
Published: June 2012

Based on ADAMS, The dynamics simulation software of individual soldier automatic weapon was developed. Parameter modification, remodeling, dynamics simulation, simulation replay, obtain and save of results of Individual Soldier Automatic weapon model by finely Chinese interface were completed. The software brings convenient for user,and improves design efficiency. The results show that the software is reliable.
Local Modeling Algorithm Based on Similarity of Vector
Authors: Zeng Jing , Wang Jun , Guo Jin Yu
Published: June 2012

A mutli-model modeling method based on local model is given. The modeling idea is firstly to find some data matching with the current working point from vast historical system input-output datasets, and in this paper, we give a new method of choose data information based on similarity of vector which improve the accuracy of data greatly. Secondly to choose the weight and optimum bandwidth then develop a local model using local polynomial fitting algorithm. With the change of working points, multiple local models are built. The effectiveness of the proposed method is demonstrated by simulation results.
Research and Improvement of Live-Wire Interactive Algorithm for Medical Image Segmentation
Authors: Li Ji Ying , Dang Jian Wu
Published: June 2012

Traditional Live Wire algorithm distinguished the strength edge of objectives uneasily and executive speed of algorithm is slow. For these problems, an improved Live-Wire algorithm is proposed. First it implements anisotropic diffusion filtering to images and constructs a new expense function, then combined with region growing segmentation algorithm, it implements interactive segmentation to medical images. Improved algorithm avoids the shortcomings of the traditional Live-wire algorithm which is sensitive to noise and can not effectively distinguish the edge of the strength, also reduces the time and blindness of dynamic programming to find the optimal path and improves the accuracy and implementation efficiency of the image segmentation.
A Novel Coded Excitation Sequence for Ultrasonic Life Location System
Authors: Yao Zhen Jing , Gao Tao , Yang Jing Song , Song Yan Xing
Published: June 2012

A simple and feasible modulation scheme called Continuous Pulse Sequence Width Modulation (CPSWM) is proposed to eliminate the crosstalk among multiple ultrasonic sensors in ultrasonic life location system. To improve the performance of multi-life location system (i.e. sharp autocorrelation and flat cross-correlation characteristics), both the continuous pulse sequence (CPS) width and the duration between two CPSs can be modulated using chaotic, pseudorandom or other methods. The duty cycle of each pulse is fixed to be 50%. To adapt to the intrinsic inertia property of ultrasonic transducers, only central work frequency is used in the CPSWM sequence scheme. The CPSWM scheme only uses digital signal generated by a FPGA processor, no D/A converter is used. The experimental results of ultrasonic multi-life location system consisting of two-channel SensComp 600 series electrostatic sensors with the proposed excitation sequences demonstrate that the ultrasonic multi-life location system with the proposed method can realize multi-life location simultaneously.
Safety Evaluation for the Highway Alignment with 3D Visual Simulation
Authors: Chen Xiao Jia , Luo Yi Cheng
Published: June 2012

In the current highway design, poor coordinate of the alignment has a great effect on the sight distance which would increase the danger and difficulty of driving. For this reason, safety checking for highway alignment is required by the current standard. In this paper, 3D simulation technique was used to model the real scene of driving. Based on the concept of the preview sight distance (PVSD), two typical coordinates of alignment in practice were discussed. Although the current standard requirement is met, it is demonstrated that the alignment in the location of a minor horizontal curve and combination of a tangent with a circular curve could still provide driver confusing information. Some recommendations were suggested so as to improve the highway alignment design.
Preparation and Characterization of Copolymerized Aminohexylaminomethyl/Phenylsilsesquioxane Microparticles
Authors: Wang Hao , Wang Xiu Feng , Yu Cheng Long
Published: June 2012

Poly (aminohexylaminomethyl/phenyl) silsesquioxane (PAHAMPSQ) microparticles with diameter of 350 nm were synthesized by the hydrolytic condensation of aminohexylaminomethyltriethoxysilane (AHAMTES) and phenyltriethoxysilane (PTES) in the presence of H2O by using tetraethylammonium hydroxide (TEAOH) catalysts. PAHAMPSQ containing both aminohexylaminomethyl and phenyl groups were confirmed from FT-IR, TGA. XRD patterns indicate that a certain ordered structure existed in PAHAMPSQ molecules. Contents of amino of PAHAMPSQ were determined by elemental analysis. SEM images show both granular and flake exist in PAHAMPSQ microparticles. Yield of PAHAMPSQ in different AHAMTES/PETS molar ratios was about 80%. PAHAMPSQ offers the potential utility as building blocks for divers and novel organic/inorganic materials.
Design and Simulation of a Pipeline Analog-to-Digital Converter
Authors: Chen Guo Ping , Jian Xian Zhong , Xiao Er Liang
Published: June 2012

The pipeline Analog-to-Digital Converter is highlight for its high resolution, accuracy, speed and low power consumption. In this paper, we have completed the design and simulation of a pipeline ADC with the SIMULINK toolbox of MATLAB. The model of 1.5 bit per stage was set up, and nine stages were connected to establish the system model. The system model can work correctly at 100MHz sampling frequency and reach 10 bit resolution. The simulation results can verify the correction of the pipeline ADC theory.
License Plate Image Restoration Based on Fuzzy Neural Network
Authors: Yao Li Hai , Xu Jie , Jiang Hao
Published: June 2012

Automatic license plate recognition system is an intelligent surveillance system in traffic management and toll. Various image restoration methods have been proposed, but they are deficient in function approximation. Neural network has its unique advantages for its large-scale nonlinear dynamic characteristic, parallelism calculation, high robustness, strong capacity of self-adaptive, self-organization and self-learning. A novel license plate preprocessing technique based on fuzzy neural network has been proposed here, which is verified to be effective by the experiments.