bluuebunny/crossref_metadata_2025 huggingface dataset:
Vibration Application Based on Machine and Control System
Authors: Long Jia
Published: October 2013

Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point.Vibration platform uses machine, control system and information technologies to optimize human performance. In order to explore the mechanical effect of vibration based on machines and control systems on human performance, twenty participants were voluntarily involved in this trial. The findings of this study indicated that automation vibration has significant difference on human performance. It has a positive effect on human body. Therefore, vibration can be used in auto regulation.
Analysis of the Complex Parts NC Cutting Parameter Selection and Optimization
Authors: Tang Bo
Published: October 2013

In the study of high speed cutting technology of complex parts, cutting methods and techniques must be closely combined with the selection of geometric parameters of cutting tool materials and cutting tool integrated. Numerical control machine tools and cutting tools without good guidance technology, cannot give full play to the advantages of NC machining. Based on this, this article mainly aimed at the complex parts NC cutting parameter selection, therefore cutting parameter optimization mathematical model is set up, and optimize it.
Automatic Maintenance and Temperature Measurement System Prestressed Concrete Box Girder in the Use of Crack Control
Authors: Zhao Li Cai
Published: October 2013

In the Xiamen-Shenzhen Railway 32 m-span prestressed concrete box girder construction process, concrete box girder cracks always confused engineering and technical personnel, is a common and more difficult to solve quality problems, for box girder concrete surface cracks issues were discussed, and put forward a repair program to be applied in construction practice.
Design and Implementation of the PTZ Control System Based on MSP430 Single Chip Micyoco (SCM)
Authors: Hong Zhai
Published: October 2013

This paper elaborates the control of environmental factors in the modern industry and agriculture, and according to the problem that the temperature and the humidity is hard to control automatically, this paper puts forward the design of the greenhouse automatic control system based on MSP430 single chip microcomputer. This design mainly introduces the overall design scheme of the automatic control system, and the use of the properties of various hardware based on MPS430, which mainly include temperature transmission sensor DS18B20 and the humidity transmission sensor CHR01. And then use the environmental control factor algorithm and numerical conversion fuzzy algorithm, so as to realize the temperature and humidity control system.
Multi-Objective Immune Genetic Algorithm and its Application in the Optimal Operation of Hydro Power Stations
Authors: Huang Xian Feng , Guan Yun Fei , Fang Guo Hua , Li Nan
Published: October 2013

The cascade development of river basin has important implication on the society, economy and ecological environment. To carry out optimal control and operation of hydro power stations can obtain a more significant overall efficiency, and provide basic support and guarantee to energy conservation and construction of ecological civilization. Taking into account the complexity and multi-objective property of operation of hydro power stations, as well as increasingly severe eco-environmental problems, this paper presents an optimal operation model of hydro power stations considering ecological environment water demand, and proposes an improved multi-objective immune genetic algorithm (MOIGA) to solve the model for better control of hydro power stations. This model is applied to the Xinan-Fuchun hydro power stations, and result shows that MOIGA is feasible for the control and optimal operation of hydro power stations.
Refined Optimization Analysis of 2G/3G Mode Switching
Authors: Zhang Yu , Wang Chun Yang
Published: October 2013

With the continuous development of the 3rd generation telecommunication, the requirement of fluent switching is taken more consideration. The paper presents the relevant parameters and the implication of 2G/3G mode switching in CS domain. Proposes the optimization analysis of the basic principle of 2G/3G mode switching in CS domain, suggests a method using neighboring CIO to refine the origin switching methods, with the analysis of typical case by using the specific implementation process of neighboring CIO, the refined method proved to be of actual value and high efficient
VoIP Data Transmission System Based on G.729A
Authors: Shen Yan Chun
Published: October 2013

It uses Windows low-level audio API to record and broadcast voice packets, encodes and decodes through G.729A, and groups by TCP/IP protocol, transmits data packets by UDP on the SOCK_DGRAM SOCKET between the client and the server, So as to achieve the function of Internet voice communication. To ensure user friendly interface, the premise here using multi-threaded programming. In addition, the system also in application-layer protocol adds the text chat function which based on TCP transmission. The essence of the design is to realize software to communicate by voice or text which based Windows operating system. The successful debugging of this software will have a positive effect on the PC to PC kind of VoIP communications system.
Spectrum Sensing Optimization Based on Multiple Antennas for Cognitive Radio Networks
Authors: Ou Yang , Wang Yi Ming
Published: October 2013

To protect the primary user and improve the credibility of spectrum sensing, a spectrum sensing optimization algorithm based on antenna selection is proposed in this paper. In the case where the channel coefficient and signal-to-noise ratio are not known, one antenna weighting and selection algorithm based on auto-correlation is proposed. This algorithm can also be used to distinguish whether it is necessary for antennas selection so as to optimize spectrum sensing performance. Based on auto-correlation ratio, selecting parts of the antennas to cooperatively sense spectrum can maximize the detection probability. Simulations are used to verify the method. The results indicate that the proposed antenna weighting and selection algorithm can be able to optimize network performance.
Data Transmission Optimization Based on Memobus RTU Communication Protocol
Authors: Dong Bing
Published: October 2013

The article introduces the constitution and message format of Memo bus RTU Communication Protocol, and provides a method for data transfer optimization through by the analysis of the communication protocol format. This method is fit on the inverter and controller which is based on the Memo bus RTU communication protocol and utilized theRS-485 port while the data being transported. By Considering this kind of inverter's distribution, this paper puts forward a method which is based on dividing by functional data block, able to sequence rankly criterion of the function data block, and able to transport date block divided by the function, thereby, this method decreases the redundancy enormously, elevates the system response speed, and solves the technical problem of controller PID output port's real time remote control to multiple inverters.
Research on MPEG Video Stream Transmission Performance Based on NS-2
Authors: Wang Ming Wei , Lin Jian Zhong , Wang Qi
Published: October 2013

Following the deployment of network multimedia applications, such as video conference, simulation research on video stream characteristic is more and more important. MPEG standard encodes the video sequences to frame I, P, and B, and has higher compression rate and bandwidth saving character. MPEG video traffic characteristic and simulation methods are researched in this paper. Network simulation version 2(NS-2) kernels is extended using C/C++ programming language. An MPEG video traffic generator modules and simulation interfaces are designed in NS-2 kernel. Simulation results show that the proposed extension method is feasible and effective.
Dual Scaled Stochastic FEM Simulation of Porous Honeycomb Material
Authors: Li Han Ling , Hou Lei , Zhao Jun Jie , Lin De Zhi , Qiu Lin
Published: October 2013

In this paper, a dual-scaled method is introduced to simulate the nonlinear property of porous honeycomb material. In microscopic scale, stochastic analysis upon a detailed representation of the hexagonal cells is applied. In macroscopic scale, coupled fluid-solid PDEs with a modified stochastic item are used to describe the rheology of non-Newtonian property of honeycomb. Semi-discrete finite element method (FEM) is applied to solve the PDEs. Comparison of stochastic dynamic system with definite dynamic system is introduced. Numerical Results of Euler explicit time scheme and Crank-Nicolson semi-implicit time scheme are presented.
Research on Wireless Sensor Networks Based on Data Acquisition Technology
Authors: Wei Ling , Guo Yan Ting
Published: October 2013

This paper focus on and study the data acquisition problems of wireless sensor, use low power MOTE node to design the hardware platform, on this foundation discuss maximum life cycle problem of the wireless sensor network data collection process, use the mathematical description of the method for solving the data flow process, present maximum production cycle analysis method in no data polymerization conditions, further, our experimental results show that our solution. The experiment shows that this scheme is more optimized and the data life cycle of the wireless network has improved greatly.
The Optimization of the Structure of Computer Network Security System
Authors: Wu Hua , Wang Hai Shun
Published: October 2013

The computer network security system is the basic condition to ensure the users to operate the computer safely. It is as well an important content of the development and research for the network system. Analyzing from the perspective of the operation effects of the traditional networking security system, there are still quite apparent shortages in the structure composition. It has not only caused the increase of the research and development costs of the system, but also has brought a great deal of inconveniences for the users to operate the system. In order to meet the requirements for high-performance system of the users, it is of great importance to carry out the optimization improvement on the structures of the computer network security system. Focusing on this point, this paper has explored on the shortages of the traditional computer network security system. In addition to this, it has brought out an effective optimization scheme for the structure.
Ant Colony Optimization Algorithm in Intrusion Detection and Positive
Authors: Zou Qian , Wang Hua Jun , Huang Wei , Pan Jin
Published: October 2013

Ant colony algorithm is an effective algorithm to solve combinatorial optimization problems, it has many good features, and there are also some disadvantages. In this paper, through research on ant colony optimization algorithm, apply it in intrusion detection. Then it gives an improved ant colony optimization algorithm. Tests show that the algorithm improves the efficiency of intrusion detection, reduces false positives of intrusion detection.
Study on Secure Coding Based Information Encryption
Authors: Xin Huang , Chen Zhen Yu , Liu Hui , Li Bo
Published: October 2013

Security is one of the major concerns in network coding. Although intrinsic confidential security is provided because different flows of information are mixed, network coding is still vulnerable to modification attack and wiretapping attack if the wire tapper knows the transmission mechanism. In this paper, a kind of encryption scheme is proposed to secure the network. This scheme has such advantages as the number of encryption is small and the wire tappers are not restricted to only part of the transmission links, but all the links are admissible. In general, the number of encryption is only 1/n of traditional encryption, in which n is the degree of one dimension of source message. Whats more, the integrity of network is also checked in every intermediate node which could make the scheme more efficient compared to the sinks detection only.
Preparation and Application of Silicon Waterproof Agent Modified by γ-Mercaptopropyltrimethoxysilane
Authors: Xie Kai Ming , Wang Bin , Zhu Chun Hua
Published: October 2013

A new type of silicon waterproof agent modified by γ-Mercaptopropyltrimethoxysilane was prepared, which can be used in the fields of textile, especially in waterproofing building. Emulsifier and formula of the ratio of the raw material as well as the time and the temperature in the emulsification process were investigated [, and optimal conditions were identified. It had some superiority such as the mature technology, the simple production process and it was friendly to the environment [.
Full-Scale Study to Treat Hydrogen Sulfide with Biofilter
Authors: Zhang Chao , Li Bo Fu , Jiang Ying He
Published: October 2013

With the development of urbanization, the odor from municipal wastewater treatment plants has disturbed the neighborhood and the control of odor has become an urgency research subject. The H2S odor was treated by the biofilter. The removal load of the biofilter, end products of H2S degradation, and operation process were studied in this paper. The results of removal H2S odor with the biofilter were as follows: When the gas flow rate was 1000m3/h (resident time 16.2s) and 1250m3/h (resident time 13.0s), and the inlet concentration of H2S ranged from 1.876 to 34.705mg/m3, the removal rate maintained above 99.92%, and the average outlet concentration was 0.001 mg/m3 which was far lower than the national level of discharge standard. The relationship between removal rate and temperature satisfied with the formula , and for H2S, θ=1.016. Furthermore, the end products of H2S degradation were only sulfate without sulfide. With the increase of sulfate, the removal of H2S was not affected. The study of operating parameters with the biofilter provided the necessary technical support for industrial design and operation control.
A Research on Synthesis of Microorganism Template Nano-Selenium Material
Authors: Zhang Ya Li , Xia Wei , Ren Ai Hua
Published: October 2013

At present there are various kinds of synthetic methods of nanomaterials including physical, chemical and composite method derived from the former two kinds. However, these preparation methods require harsh conditions and produce low yield. Besides, they cause environmental pollution easily. Therefore the microorganism template synthesis is favored highly due to its rich resources, low cost and availability, environmental friendliness and unique configuration and high morphology repeatability. In this thesis E. coli strains are successfully adopted as the template to synthesize nanoselenium material. Such inspection methods as scanning electron microscope, X-ray diffraction and ultraviolet are used for the characterization of samples. It aims to explore a new synthetic green way for nanoselenium material.
Oil-Spills Detection in MIMO-SAR Radar Images by High Order Statistics
Authors: Luo Yan Ling
Published: October 2013

MIMO radar (Multiple input multiple output radar) is a hot topic which gets lots of attention from researchers all around the world recently. It can achieve better detection performance than conventional phased radar. In this paper, the MIMO radar signal model is studied, and then the concept of MIMO radar is applied into SAR. The technique is employed to detect the oil spill in sea. At last, some conclusion is drawn. And some item for future research in presented also.
Comparison between the Generative Computer Approach and the Traditional Design Approach in the MRHC with Parallel Layout
Authors: Ding Xi Ying
Published: October 2013

This paper attempts to explore the application possibilities of a author programmed multi-agent system in a residential cluster layout in Beijing which was originally designed by the traditional approach. The author analyzed and evaluated the layouts with three environmental indices: relation with road, relation with green land, location in the building. The solution showed that the computer could generate the well performed layouts which could still be improved by the traditional approach. The cooperation of these two approaches can make the design process efficient, digital evaluated, controllable, aesthetic and creative.
Problems and Suggestions on Dike Road Designs
Authors: Wei Hao
Published: October 2013

Dike roads include water conservancy projects and highways or public works, so the industry cross exists in designs. During the process of dike road designs, there exists problems such as disjointed dike designs and road designs, the lack of adaptation classification system and design standards, inconsistent requirements of embankment compaction and subgrade compaction, the lack of a connection with the inner road network design and green landscape design and other issues. We should fully consider the differences between dike design and road design, according to the particularity of the road dike, and we have proposed several proposals, such as increasing related indicators in the early design of the dike road design, establishing the dike road classification system, uniforming embankments and subgrade compaction standards, strengthening connections with the surrounding road network design and paying attention to greening landscape designs.
The Technologies of Maintaining and Processing Treadmill's Common Faults
Authors: Liu Zhi , Liu Fei
Published: October 2013

With the increase of people's awareness in health, those busy people living in the centers of cities can only rely on a treadmill to take physical exercise in life. However, there will be a series of problems to appear in a treadmill if it is used for a too long time, so it is necessary for people to know well the structure of the treadmill and the common faults for solving these problems. In this paper, the types and structures of treadmill as well as the common faults and solutions are specifically introduced.
Exploration of Cost Control Problems in the Customized Production Process of Mechanical Products
Authors: He Long , Wang Jing Fang
Published: October 2013

This paper gives the definition of configuration rules in the customized production process of mechanical products from two different levels: the activities and parts. In this configuration, different customized production process of customized products will be generated to achieve the purpose of reusing different types of resources; finally, practical example will be given to prove this verification. Customized production is interactive and highly imitative. According to theses two advantages, this paper adopts computer technology to establish geometric model of production figures. In this way, this application can not only simultaneously meet the needs of both machinery manufacturing production and customized production, but also launch various simulation, verification, and contrast and optimization process to a variety of program. Finally, an optimal method for production is used eventually to realize the purpose of low-cost and high quality.
Research of Groundwater Heat Source Pump in the Cold Region
Authors: Zhang Qing , Zhang Yan Jun , Yu Zi Wang
Published: October 2013

A certain scale underground permafrost is chronically existing in northeast certain regions,thus forming an nature cold source and thats has a great influence on the application of groundwater source heat pump. In order to improve operational efficiency of groundwater source heat pump,the paper uses laboratory and field test and numerical simulating method to probe into influence rule of cold source on groundwater heat source pump. Author carried on thermal physical experiments and field thermal response tests of the cold source site for Jiagedaqi region. Study has shown that thermal physical parameters of sand and gravel (specific heat capacity,thermal conductivity) present discrete phenomenon with the depth in the region,thermal physical parameters of sandstone and granite have little change,thermal conductivity of granite is largest and sand and gravel is smallest and sandstone is placed in the middle,specific heat capacity has obvious fluctuation for the depth influence,specially for sand and gravel layers on the different depth. Based on geological conditions,the paper constructs numerical model and carries out numerical research,and then simulates and analyzes heat breakthrough and influence radius of pumping/injecting system of multiple well,simulating results show that influence range of cold source should be within 150m to multiple well and cold source has the greatest effect on water source heat pump less than 75m. Research results will provide theoretical basis and reference for groundwater source heat pump designing and site selection.
Integrated Water Resource Management in Yinchuan Plain
Authors: Qiao Liang , Dai Miao , Li Meng Na
Published: October 2013

Based on the analysis of the current state of water resources and utilization characters, the optimizing and allocating model of water resources in Yinchuan plain is established by multi-objective planning methodology. Systematic viewpoint runs throughout the whole modeling process. Furthermore, by employing the established model, the proper allocation of the industrial and agricultural water, the ecological environment water and integrated development of surface water and groundwater are discussed. The more reasonable water utilization structure is suggested. The water resource for agriculture is decreasing, while the water resource for people life, industry and ecologic environment are increasing. This change of water utilization is correspond to economic and social development trend.
Protective Effects of Flavonoids from Lotus Leaf against Exercise-Induced Oxidant Stress in Muscle of Mice
Authors: Zhang Lan
Published: October 2013

The main purpose of this study was to examine the effect of flavonoids from Lotus leaf (FFL) on exercise-induced oxidant stress in mice. 32 mice were randomly divided into 4 groups: control group, FLL low dose treated group, FLL middle dose treated group and FLL high dose treated group. The control group was given distilled water and the treated groups were given different doses of FLL (50, 100, 150 mg/kg) by gavage once a day for 28 days. 28 day later, mice were made to swim until being exhausted, and exhaustive swimming time, malondialdehyde (MDA) levels, superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities in muscle were measured. The data showed that that FFL increase the exhaustive swimming time and could elevate the exercise tolerance, as well as decrease the MDA levels, increase SOD and GSH-Px activities in muscle of mice. These results indicated that FFL has a protective effect against exercise-induced oxidative stress.
Synthesis and Property of Siloxane and other Modifier Modified Melamine Resin
Authors: Li Xiao Bin , Qi Lu
Published: October 2013

This work reports melamine resin was modified with siloxane, Polyvinyl alcohol (PVA) and polyethylene glycol (PEG) to improve its structure and properties, and accomplished a wide research and study on the effect of different reaction conditions, including temperature, PH and solid contents. Using infrared spectroscopy (FTIR), thermogravimetric analysis (TG) and DSC to analyzed the samples and study their composition and performance. The results showed that siloxane, Polyvinyl alcohol and polyethylene glycol (PEG) modifier can make the performance of the melamine better than unmodified ones.
Adsorption of Methylene Blue in Media Industry Pollution by GO-Coated Glass Wool/EVA/EPDM Foaming Composite
Authors: Zhang Yi Fei , Yan Yu Jing , Bian Fei , Zhang Guo
Published: October 2013

A new kind of graphite oxide (GO)-coated glass wool /EVA/EPDM foaming composite was prepared by melt blending.we choose it as absorbent, methylene blue (MB) as target pollutant to study its adsorption behavior. The foaming composite had a certain adsorption capacity of MB in the water. With the increase of proportion of GO-coated glass wool, the MB absorbencies increased.
Recycled Water Reuse and Rainwater Utilization Project of Jilin Jianzhu University
Authors: Yang Jin Gang , Wang Bo
Published: October 2013

As a heating system of energy saving, environmental protection, comfortable, safe and new-type, low-temperature radiation ground electric heating system has many advantages that other heating ways can not be on a par with such as long service life and free from maintenance within 50 years and has been gradually accepted by broad developers and residents. It has been broadly applied in heat supply in residence, industrial workshop, classrooms and hospitals; warm preservation in pipeline and warming in high tunnel and snow melting in slope road.
Study on Problems of City Drainage System
Authors: Zhang Xiao Yi
Published: October 2013

In this article, we try to find out the reasons of urban water logging . We will pay attention to the generation process, the affecting factors, and then seek the end solutions to solve the embarrassing situation.
Water Pollution Prevention Network and its Long-Term Meaning of Governance Performance
Authors: Qi Zhi Guo , Shi An Na
Published: October 2013

Water resources constraints of Chinas future sustainable development have been the most important strategic issue, so China's sustainable development strategy must be built on the basis of a clear strategy for water resources. Chinese government has begun to pay attention to the comprehensive management of water resources, especially to improve the efficiency of water use and the control of water pollution as an important and urgent task. Rivers flowing through cities are subject to serious water pollution, some even affect the drinking water which is directly related to the sustainable development of urban society and economy and people's quality of life. Urban water pollution has become an urgent problem, the Government is also aware of the urgency of water pollution, the need to develop a pollution control plan, but progress is not satisfactory.
A Study on the Performance of Natural Wind in Hybrid System in an Atrium Building
Authors: Wang Xin , Jin Shan , Ye Li Fei , Lu Ping
Published: October 2013

Hybrid ventilation is a two-mode system, including mechanical and natural ventilation, which can be used in large space to exhaust excessive heat while minimize energy consumption. One mathematical model is developed to calculate indoor vertical temperature distribution by the hybrid ventilation. Here, the mathematical model is proposed to illustrate the running operation of the hybrid ventilation, especially the control strategies of the natural ventilation in this paper. An experimental and theoretical investigation of natural ventilation in the hybrid system in an atrium building has been conducted. A simplified approach for calculating critical outer temperature and a mathematical model of the natural ventilation in the hybrid system are both proposed in this paper. We have restricted our attention to the natural wind within the upper zone of the large space, in which the effects of the outer air temperature, indoor heat, the natural air rate, and the inlet location of the natural wind are discussed by the mathematical model and experimental data.
Acoustic Insulation Property of V-Structure Glass Fabric Reinforced PVC Composites
Authors: Wang Yan , Zhu Yao Feng , Fu Ya Qin
Published: October 2013

In this paper, four models of PVC composites reinforced with glass fabric were designed based on the arrangement of the V-structure, using V-structure discontinuous glass fabric as the sandwich structure and PVC resin as matrix. The acoustic insulation properties of the composites with V-structure discontinuous glass fabric as the sandwich structure were analyzed with a two-channel acoustic analyzer. The results show that the orientation of the V-structure has a strong effect on the acoustic insulation property. In the case where the raw material, thickness and density of the V-PVC composites are almost the same, the composite with the opening of the V-structure toward the source of sound shows better acoustic insulation than that with the opening of the V-structure away from the sound source. This difference is even more pronounced with increasing layers of glass fabric.
Research on Climate Adaptability of Energy Conservation Building with Renewable Energy Sources in Hot-Summer and Cold-Winter Zone of China
Authors: Zhang Hui , Yu Zhuang
Published: October 2013

Nowadays, exploiting of renewable energy resources has become an important research field, and it has been paid great attention to all over the world. This paper takes an energy saving renovation engineering of Huazhong University of Science and Technology (HUST) in Wuhan, Hubei province, as a case, and some energy-saving technical measures were put forward, such as Active Dynamic Ventilated Envelope (ADVW), climatic adaptive windows, underground cooling and heat sources, solar building integrated system and under floor air supply system, etc. In order to realize energy saving, land saving, water saving, material saving, environmental protection and reducing pollution, this building makes the best of renewable energy resources in order to realize low energy consumption, and the technical reference was provided for promoting application of renewable energy and building energy efficiency in hot-summer and cold-winter zone of China.
A Quantitative Study on Carbon Emission Features of Residential Building in Shenyang Based on LCP Theory
Authors: Zeng Lin , Shi Tie Mao , Liu Miao , Hu Yuan Man , Gao Chang
Published: October 2013

As the largest amount of building in urban architecture, residential building brings enormous greenhouse gases emissions concerning energy and resource consumption and solid waste disposal during its construction and removal. On the basis of LCP theory, the carbon emission of a residential building in Shenyang was calculated in each stage of the life cycle. The calculation shows that the carbon emission in the use and maintenance stage accounts for 86%, the biggest proportion in its life cycle. The carbon emission of one square meter reaches 45.27kgCO2/(m2·y), higher than other cities in China. So the potential for Shenyang to save energy and reduce carbon is considerable. The low carbon objective can be achieved through reducing the use of fossil energy, improving residents energy saving awareness in the use stage and enforcing energy efficiency policies and measures. Meanwhile, from the perspective of research methodology, the carbon emission of a building is regionally featured. For instance, electric carbon emission coefficient is substantially influenced by local energy structure; the distance between building material production and transportation in different places is different; the carbon emission caused by the energy consumption during the usage of the building is closely associated with local energy saving policies and regulations.
Research on Control System of Energy-Saving Greenhouse
Authors: Li Qun
Published: October 2013

Energy-saving and environmental protection has become the theme of the 21st century. Greenhouse is an energy-intensive industries. Every year, 35% of energy consumption on agricultural production is used for greenhouse heating in the world, which accounts for 15-40% of the cost of greenhouse production. For improving energy efficiency and protecting the environment, the reasonable control of greenhouse environmental parameters is significant. The design of solar greenhouse real-time environment monitoring and automatic control system is based on 8051 single-chip in the thesis. The temperature and humidity signal are obtained from DS18B20 digital temperature sensor and IH3605 humidity sensor. When the greenhouse temperature exceeds the set temperature, the device can be started by perform timely processing, then the user can read LED digital display temperature and humidity values.
On the Eco-Building for Sustainable Development Thinking and Practising Environmental Design
Authors: Peng Hong Kun
Published: October 2013

Ignoring the coordinated development and the natural environment carrying capacity plight caught the traditional development model, emphasizing the natural environment and the economy to adapt to the pursuit of harmony between man and nature, sustainable development become a wise choice, eco-design of the built environment is a human realization important tool for sustainable development. Sustainable eco-design of the built environment and the long-term goal of the current interests combine to maintain maximum coordination with the natural environment, not only become the reality of human needs, while also considering the needs of the human potential. Ecological construction and environmental protection around the significance of in-depth discussion of the needle eco-building for sustainable development thinking and practice of environmental design, environmental design proposed ecological architecture reflects the theme of sustainable development, while recycling is designed to achieve low carbon, environmentally friendly eco-building environment design approach.
Adsorption Characteristics of Triclosan on Chitosan/Poly(vinyl alcohol) Composite Nanofibrous Membranes
Authors: Liu Si Jia , Xu Ran
Published: October 2013

Chitosan/Poly (vinyl alcohol) (CS/PVA) composite nanofibrous membranes with diameter between 150-350 nm have been fabricated by electrospinning. The effect of contact time, temperature, pH and concentration of triclosan on the adsorption capacity of the membranes were investigated. The equilibrium adsorption capacity of triclosan on CS/PVA nanofibrous membranes was 61.61 mg/g. The favorable pH for triclosan adsorption was pH 6. After five regeneration cycles, the removal rate of triclosan maintained above 67%. The adsorption of triclosan on the membranes fitted both Freundlich and Langmuir isotherm model. Its adsorption kinetics followed a pseudo-second-order model.
Analysis of Radiation Performance for a Combustion-End Radiator of a TPV System
Authors: Wang Lei , Xu Ye Xin , Yuan Rui Ming , Wu Xi , Xu Xiao Jie
Published: October 2013

In this paper, the authors analyzed effects of the factors, such as the air mass flow rate, the geometric dimensioning of the inner and outer combustion tubes and the thickness of the radiator, to the performance of the combustion-end radiator system. The result shows that optimal performance will be achieved when the combustion power is 1kW and the air mass flow rate is 5 times higher than the requirement for the complete combustion of CH4. On this basis, the effect of the geometric dimensioning to the combustion-radiator system is discussed. The performance of the combustion-radiator system is the best when the inner diameter of inner tube is 24mm, the length of the combustion tube is 40mm and the radiator thickness is 1mm. In this condition, the average temperature of the radiant surface, the radiant power density of the radiator and the combustion efficiency are 1530K, 9.41W/cm2 and 47.3%, respectively.
The Influence of Diatomite Types and Compatibilizer Content on Properties of Diatomite-Wood Flour/Polypropylene Composites
Authors: Liu Ming Li , Han Guo Zhi , Liu Yan Long , Li Chun Feng
Published: October 2013

Based on diatomite as modifier, maleic anhydride grafted polypropylene as compatibilizer, wood flour as reinforcing material, through single screw extruder, diatomite based wood plastic composite was prepared. The results show that: compared with one-grade-diatomite (OGD) and two-grade-diatomite (TGD), mechanical properties of the composites prepared by calcined diatomite (CD) are better, tensile strength and impact strength reached 46.9MPa and 20.1MPa. With respect to the diatomite types, it is more significant for the effects of MAPP mass on the mechanical properties of composites. The amount of MAPP was controlled in 4%, the mechanical properties of composites are better. The study of rheological properties showed that, the flow property of composites produced by calcined diatomite is better; the interface of the composite components is closer and more superior processability.
Experimental Study on Wettability of Coal Dust in Addition of Surfactants
Authors: Liu Yi Min , Xu Yuan Yuan , Li Shi Da , Li Jun Wei , Wei Shang Jin , Ren Tao , Hu Tang Yu , Sun Ji Liang , Shu Xin Qian
Published: October 2013

In Different surfactants in combination with some inorganic salts were used to improve wetting behaviors of coal dust in this paper. It shows that wetting capability of the coal dust could be improved by addition of surfactant. The improvement due to surfactant use is like: JFC>OP>SDBS. In the mean time, the improvement of the inorganic salts is like: Na2SiO3>Na2SO4>CaCl2>NaCl. The further investigation demonstrates that the more Na2SO4is used, the better wetting of coal dust is bility is.
The Synthesis of Starch Graft Temperature Scale Inhibitor
Authors: Liang Ling Xun
Published: October 2013

Using the self-made initiators, starch as basic material, acryl amide (AA) and 2-acryl amide-2-methyl propane sulfuric acid (AMPS) as raw material, a new starch graft of high temperature resistant scale inhibitor is synthesized. Through the indoor experiment, the optimum process conditions of polymerization reaction is confirmed: the initial monomer concentration is 30%, m (ST): m (AA+AMPS) =3:7, m (AA): m (AMPS) =7:3, the dosage of initiator is 0.1%, T=45 °C, t=5h. The graft copolymerization product is gotten with the monomer grafting rate is 96.5%, the conversion rate is 97.6%. The infrared spectroscopy and scanning electron microscopy is used to characterize and analyze the product.
Estimation of SOC Based on Subspace Model of Power Battery and Adaptive Kalman Filter Method
Authors: Zheng Min Xin , Yang Qing Sen
Published: October 2013

Subspace identification method was adopted to build a state-space model of the battery pack by directly using the acquisition data of current and voltage. The terminal voltage was split into four parts according to the relationship between the current and each element of the models output voltage. Then an equivalent circuit model composed of resistances and capacities was set up to simulate the relationship. Based on the battery model, a state space model with SOC as the state variable and voltage UCb as the output was set up. By applying a designed adaptive Kalman filter method to the model and adopting the voltage UT1 from the subspace method as the measured output, the optimum estimation of SOC can be acquired with only calculations of one dimension.
3D-ZnO Nanorods Photoelectrodes for Quantum-Dot Sensitized Solar Cells
Authors: Chen Yan Li , Fu Wu You , Lv Pin
Published: October 2013

In this study, the three dimensional ZnO (3D-ZnO) nanorods were synthesized by a simple chemical solution method, which were used as photoelectrodes, and CdS QDs were deposited on the surface of the 3D-ZnO nanorods to act a light absorber by using the successive ionic layer adsorption and reaction (SILAR) method. The photovoltaic performances of the semiconductor quantum dots sensitized solar cells based on CdS QDs/3D-ZnO photoelectrodes were investigated. A maximum 5.06 mA/cm2short circuit current density and 1.03% conversion efficiency under one sun illumination has been achieved. These results demonstrate that the CdS QDs-sensitized 3D-ZnO nanorods photoelectrode has a potential application in solar cells.
Study of Al/Organic/ITO Polymer Solar Cell on Glass Substrate
Authors: Chang Yi Tsung , Su Jen Hong , Shih Yi Ting , Shih Yen Lin
Published: October 2013

A single layer of organic solar cells with the Al/P3HT/PEDOT: PSS/ITO structure on glass substrate was investigated in this paper, and examined the performance of the polymer solar cells by changing 60, 70 and 80 nm thickness of the P3HT active layer. These devices had better absorption in the active layer and poor charges collect in the electrode with increase thickness of active layer were observed. It is found that the best properties that the single layer organic solar cell with open-circuit voltage 0.457 V, short-circuit current 1.05E-4 mA and power conversion efficiency of 3.3E-5% was achieved under illumination 100 mW/cm2 when the thickness of P3HT active layer is about 80 nm.
The Research on the Main Control Strategy in the Grid-Connected PV Systems
Authors: Hu Bo , Piao Zai Lin , Zhou Dong Sheng
Published: October 2013

The maximum power tracking and Grid-connected is the urgent need to solve the problem which exists in the grid-connected PV system. This article expounds on the maximum power point tracking and grid inverter control strategy. It puts forward the control strategy of researching maximum power point tracking, which is effective in improving solar panels convert solar energy into energy. With the development of photovoltaic technology, requirements of photovoltaic grid control strategy are getting higher and higher. This article examines adaptive disturbance observed method integrated control combined BOOST boosted circuit, in order to achieve the maximum power point tracking for photovoltaic panels .The photovoltaic inverter control structure is to meet the photovoltaic conversion efficiency and power quality of the main technical indicators. It put to use double topology and feed forward decoupling control strategy, which provides protection for the flexible grid.
The Utilization of Technology and Development Prospect of Solar Energy
Authors: Jin Yu Cheng
Published: October 2013

The solar energy as a kind of new clean energy, plays an important role in the economic development and protecting environment in China1China started later in the exploitation and utilization of solar energy, but has big solar potential. This paper gives a detailed introduction to the distribution of solar energy resources, and the industrial utilization of solar light-heat effect and light-electricity, points out the prospects of the development of solar energy industry in China.
Determination of Arsenic in Tin Smelting Slag by the Molybdoantimonyarsenate Blue Spectrophotometric Method
Authors: Feng Miao , Cui Ya Wei , Xia Ju Pei , Zhou Xing Tao
Published: October 2013

The key step is improved the national standards-the molybdoantimonyarsenate blue spectrophotometric method for the determination of arsenic content in tin smelting waste residue. The experimental results show that on the basis of GB/T 1819.5-2004, the reaction acidity instead 2.0mol/L, tartaric acid 10mL, coloration in water bath 20min, then colorimetric at wavelength of 850nm are the optimal conditions for determination. Using three samples of tin slag smelting arsenic verification of these conditions, precision and accuracy are good, the relative standard deviations are 0.91%、1.35%、1.07%, the recoveries are 100.01%、99.73%、99.98%, respectively.
Extreme Seeking for the Optimal Design of the Thermal Energy Storage Tank in a Trough Solar Collector System
Authors: Liu Guang Yu , Xu Fen , Shen Guo Qiang , Lu Ren Quan
Published: October 2013

An extreme seeking (ES) method is given for the optimal design of the thermal energy storage (TES) tank in a trough solar collector system. The energy storage tank in such a solar energy collector performs a filter which regulates the heat transfer in some applications. It is desirable that the volume of the TES tank is optimized in terms of the best performance of heat regulation. The main idea is to construct a simulation scheme that emulates repeatedly the dynamical process and varies the key parameter of the tank at all iterations. The governing algorithm is a convex optimization. A case study that incorporates the above method is examined in the city of a province in China. It is shown in the numerical results that the volume of the TES tank is key variable that influences the performance of heat transfer; the proposed ES method is effective to seek the optimal volume.
An Overview of Solar Power Generation
Authors: Yu Che Zhe , Yu Wen
Published: October 2013

This paper mainly summarizes four kinds of solar power generation. They are solar roof, photovoltaic power station in space, solar power tower and solar hot air power generation technology. And the paper also contrasts these four kind solar power generation from the viewpoints of technology, power generation efficiency and cost, which provides references for solar power design.
Study on Synthesis of PHB by Moderate Halophile and Aqueous Extraction of PHB
Authors: Chen Qing , Zhang Ling Hua
Published: October 2013

PHB (Poly-β-hydroxybutyrate) has been widely in the areas of industrial packaging, pharmacy and agriculture. Currently, its production cost, especially in extraction and purification are high. A moderate halophilic bacterium was used for PHB synthesis and an aqueous extraction method based on osmotic downshock was investigated in this paper to further improve the extraction efficiency. PHB synthesised by moderate halophile with certain NaCl concentration can be released with cell lysis by osmotic downshock. Meanwhile the high temperature, ultrasonic and SDS (Sodium dodecyl sulfate) can enhance the release. After 48 h of fermentation, the production of PHB by Halomonas salina was 6.5 g/L. The extraction rate of PHB was 24.6% with osmotic downshock and 35.4% with additional ultrasonic assistance at 65 °C. A further addition of 0.5% SDS made the extraction rate increase to 75.4%. Thereinto, the addition of 6% NaCl had significantly improved the aqueous extraction rate to 92.3%.
Straw Mixed Combustion Characteristics and Kinetic Analysis
Authors: Zhang Lin Hai , Xue Deng Qin , Zhang Jia Xi , Fu Yu , Hou Shu Lin
Published: October 2013

The mixed materials come from Beijing Daxing District, corn stalks as the main raw material, peanut shells and wheat straw as affixation. Combustion characteristics of mixed materials are studied by using Thermogravimetric analyzer and combustion dynamics studied by using Coats-Refern method to offer practical and theoretical data for crop straw combustion and Densified . Studies have shown that Combustion curve of three samples have two distinct peaks, divided into water evaporated to dryness, and the combustion of volatiles, fixed carbon combustion and burnout four basic stages and lied a larger overlapping area in the entire combustion stage, That combustion characteristics and kinetic parameters of mixed materials are influenced by adding peanut shells, and less affected on adding wheat straws.
Biodiesel Production from Waste Cooking Oil in Laboratory Scale
Authors: Blinová Lenka , Fiala Jozef , Balog Karol
Published: October 2013

Biodiesel is a product from the transesterification of alcohol and vegetable oils and animal fats. Biodiesel is a greener alternative to petroleum diesel. In this study was biodiesel produce from waste sunflower cooking oil. The quality of biodiesel which was purified for two steps was evaluated and compared with sample of biodiesel produced in company MEROCO. The transesterification of waste cooking oil was successfully but biodiesel after first purification wasnt carefully washed. We recommend using plenty of water for purification, approximately 30 % of the biodiesel volume. Washing of the biodiesel was found to be necessary for a better quality biodiesel and the effects were associated with the removal of residual by-products like excess alcohol, excess catalysts, soap and glycerine.
A Review of Biodiesel Appication on Marine Engine
Authors: Zhang De Fu , Xiao Hui Chao , Zhang Xiao Chuan
Published: October 2013

The classification and fuel properties were stated for the alternative fuels applied on the internal combustion (I.C.) engines. The studies concerning biodiesel as fuel operating on marine engine were presented in this paper. Major obstacles in biodiesel application such as biodiesel compatibility, feedstock, production cost, supply chain and nitrogen oxide emission from engines were investigated based on experimental research and practical applications onboard ship and the feasible strategy were explored.