bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis Method Based on Cloud Model for Comprehensive Indices for Natural Zoning for Highways
Authors: Li Chao , Wang Yu Lan
Published: July 2014

Zoning indices are important reference for highway zoning. Therefore, the analysis and calculation method of zoning indices is the key to objectivity and scientific of the highway natural regionalization. In the analysis and calculation process of comprehensive index, strong fuzziness and randomness of factors description is the main obstacle to achieve reasonable conversion between qualitative and quantitative. At the same time, the weight determination of each factor mainly relies on the subjective experience, is lack of objective and quantitative analysis method. In previous study on Natural Zoning for Highways in China, zoning indices were not comprehensive ones, but usually single physical geographical element. This paper combined the cloud model and Delphi theory to put forward the comprehensive zoning index analysis method. Highway Engineering Difficulty Index (HEDI) was analyzed with this method and got the weights of the factors to calibrate the analysis model to calculate HEDI of China. The map of HEDI reflects the influence degree of surface configuration on highway engineering in different regions of China correctly. Analysis result shows that the method improves the quantization degree of comprehensive zoning indices analysis, realizes the optimal utilization of the fundamental spatial data.
A Solar-Powered In-Vehicle Semiconductor Refrigeration System
Authors: Liu Yi Tao , Zhu Chang Ping , Zhao Jun Yang , Sun Hao Bo , Wang Bin , Tang Yi Bin , Chen Bing Yan , Chen Jin , Qian Rong , Jiang Deng Feng
Published: July 2014

A solar-powered in-vehicle semiconductor refrigeration system by remote control is put forward. With the solar power as the source of energy, the in-vehicle refrigeration system uses the safe and pollution-free semiconductor refrigeration method, and adopts the GSM technology to make the remote control via the short message of the mobile phone, so as to achieve the cooling effect without starting the engine of the car. Through the model experiment, the working current and power consumption as well as the refrigeration temperature control effect of the system were analyzed, and verified the feasibility of the system. Being energy saving and environmental friendly, this design has a high application potential.
Suggestions on Comprehensive Metro and Real Estate Development Applied in China: A Case Study of the MTR
Authors: Li Lin , Rong Chao He , Zhu Hong Feng
Published: July 2014

This article generalizes the current condition of the MTR, introducing the “rail transit plus comprehensive land use” mode in detail. By analyzing this mode applied in Hong Kong, three feasible factors to the success of this mode in Hong Kong are found. According to the annual report of MTR, this mode brings great profit to MTR and has become the learning example to the rest of the world. In China, Shenzhen Metro Group co., Ltd, Hangzhou Metro Group co., Ltd and Beijing Subway are now learning this mode to alleviate the financial burden of government as well as to enlarging the metro by using their profit. In order to realize win-win situation, several suggestions should be put forward.
Research on Economic Benefit Evaluation of Transportation Enterprise Based on Extension Matter-Element Model
Authors: Zhang Xin Jie
Published: July 2014

According to the operation status of the transportation enterprise in our country, choose financial benefit, asset operational condition, debt paying ability and development ability as a benefit evaluation system. In order to achieve the goal of comprehensive evaluation, the Extension Matter-element Model is applied to the benefit evaluation field. And correlation function is used to represent the benefit of transportation enterprise.Through the comprehensive level evaluation of transportation enterprise benefit, we analyze the reasons for the poor financial results of enterprise and corresponding improving measures are put forward according to the results of the evaluation.
Design of a Warning System for Pedestrians and Non-Motorized Vehicles
Authors: Gao Chang An , Xie Yu Ting , Ouyang Dong Dong , Li Huan Huan , Wang Gao Shen
Published: July 2014

This article aims at to invent a warning system which can be used to improve the widely spread phenomenon of pedestrians and non-motorized vehicles’ traffic violation in our country. We collected data by making researches at the cross between the North and South terminal coach station of Jinan. Analysis of psychological knowledge causes pedestrian and non-motorized vehicle traffic violation are expounded in detail.
Research on the Calculation Model of Signal Intersection Delay
Authors: Yan Zhen Ying , Song Zhi Hui , Lv Shuang Chun
Published: July 2014

The researched object of this paper is the main intersections in Hohhot. The HCM model is chosen to estimate the delay of signal intersection after comparing the advantages and disadvantages of various delay models. Use the spotting sample method to collect field data, then compare the results with the results caculated by the HCM model, and modify the model by using the least squares method. So the delay calculation model consistent with intersection in Hohhot can be built, and it can provide a theoretical basis for the analysis and evaluation of intersections and road system in Hohhot .
Nanomaterials for Hydrogen Storage
Authors: Kan Hong Min , Sun Miao , Zhang Ning , Wang Xiao Yang , Long Hai Bo
Published: July 2014

The nanocrystalline materials for hydrogen storage offer a breakthrough in prospects for practical applications. Their excellent properties are from the combined engineering of many factors: alloy composition, surface properties, microstructure, grain size and others. Nanoengineering can speed up the kinetics, lower the enthalpy of formation and reduce the temperature of releasing hydrogen. The main focus is on the nanostructured metal hydrides, preparing nanograined materials and the effects of nanomaterials on the hydrogen storage properties in this review.
The Effects of Noise Pollution Produced by Road Traffic of Naples Beltway on Residential Real Estate Values
Authors: del Giudice Vincenzo , de Paola Pierfrancesco
Published: July 2014

Noise pollution generated by road traffic represents a damage factor for property values when sound pressure levels exceeds normal tolerability limit.
In fact, noise emissions over the normal tolerability limit cause a real estate values reduction and lower marketability in terms of willingness to pay by traders.
In this study the effects of noise pollution produced by road traffic of Naples Beltway on residential real estate values​​ for a central urban area have been evaluated.
These economic effects were evaluated using an econometric analysis of property prices (Land Price Analysis) based on a hedonic price function built through a semiparametric additive model (Penalized SplineSemiparametric Method) and applied to a sample of defined residential real estate market of Naples.
In line with indications provided by wide literature examined, for increase of an sound level unit (expressed in dB) it was verified that average depreciation percentage for real estate values ranges from 0,30% (diurnal emissions) to 0,33% (nocturnal emissions).
Exploration of Traffic Facilities Engineering Design for Tide Lanes
Authors: Qu Liang Peng , Wang Jian Jun , Huang Xin Ting
Published: July 2014

In allusion to the issue that lack in design guidelines of tide lane for traffic engineering facilities, based on the investigation of domestic designs, this paper concludes the lessons of experience from current projects, points out the design principle of tide lane in traffic engineering facilities from the perspective of functional demand, and discusses the design and setting of facilities in detail, which provides the references for the design of tide lane in the traffic engineering facilities.
Improvement Design about Anti-Dazzling of Mid-Barriers on Multilane Highway in Urban Fringes of China
Authors: Yu Jin Lin , Xu Liang Jie , Zhang Mei Yi
Published: July 2014

Most multilane highways in urban fringes of China separate vehicles from the other direction by the use of mid-barriers, which failed to prevent from dazzling at night .This research proposes the design methods of anti-dazzling on the mid-barriers with the basic principle of anti-dazzling. The multilane highway with 4 lanes which sets mid-barriers in urban fringes is used as a case of application, three schemes are set to compare their advantages and disadvantages by analyzing the shielding area and the bending moment of wind load, the result shows the anti-dazzling improvement of Scheme 1 increases 108%, Scheme 2 increases 102%,while the bending moment of wind load of Scheme 1 increases 59.6%, Scheme 2 increases 66.4%. So, the recommended design is Scheme 1.
Research on Urban Traffic Sustainable Development of Huhhot
Authors: Wang Zheng Yu , Li Cheng Bing , Zou Xiang Li , Guo Rui Xue
Published: July 2014

In recent years, the urban transportation, as a long-term project for urban traffic development, have been raised to strategic height. On the basis of sustainable development theories and foothold on Huhhot’s urban traffic condition, we deeply analyses it’s traffic characteristics, existing problems and developmental superiority in this paper. By exerting the requirement of urban transportation and combining it with Huhhot’s geographic characteristics, economic level, resource storage and management mechanism, we put forward some advices that aimed to solve the problems during it’s transportation development.
Research on the Application of BIM Technology in Indemnificatory Houses Planning and Design
Authors: Han Rui , Mo Wei , Jin Ri Xue
Published: July 2014

Building quality indemnificatory houses is an important issue to improve people's livelihood, is an important guarantee for promoting social harmony and stability. In order to adapt to the new situation, making indemnificatory houses becoming more humanized design, scientification and efficiency. Better optimizing the design by BIM (Building Information Modeling) technology, controlling construction costs, improving the efficiency of building maintenance, this move conforms to ecological architecture policy, the development strategy of energy conservation, which advocated by the government. In this study we plan to research the whole building life cycle with BIM technology. We will analysis the supply and demand data collected from housing applicants, optimize the site planning and house graphic design, till draw the construction plans. We will make full use of BIM technology advanced functions, such as collaborative production network, building performance analysis, collision detection and visualization equipment interior configuration options .we look forward to establish a new model for indemnificatory houses design, and provide a more suitable living space for housing applicants, optimize spatial pattern of urban and rural, optimize management pattern, improve the city's overall carrying capacity.
A Class of Linear Integral Equation in Engineering
Authors: Zhao Li Mian , Huang Ji Ting
Published: July 2014

In this paper, we discuss a class of linear integral equation with piecewise continuous function. Firstly, we change the integral equation to a differential equation with the initial condition. Secondly, the differential equation is solved by the constant variation formula and integration by parts. Explicit solution of the integral equation is given clearly.
The Comprehensive Risk Evaluation for Combined Cycle Gas Turbine Included Wind Power System
Authors: Liu Ji Chun , Wu Yun Xia , Yu Xi , Liao Jin Bo , Liu Tong , Wang Shu Xiang , Deng Chuang
Published: July 2014

In the coordination development course between wind power and power grid, because of flexible operation ability, the combined cycle gas turbine (CCGT) can strength the inherent unit commitment performance such as reserve security and ramp limit with the result of improving the power grids wind power absorption capacity. Thus, CCGT included wind power system is one way of sustainable development for civil energy and environment. Because the price of gas is much more expensive than that of coal, taking aspects of economy, technique and environment into account, this paper sets up comprehensive risk evaluation for combined cycle gas turbine involved wind power system, which includes index such as system operation cost, environmental benefit, unit capacity utilization rate, heavy ramping rate lasting time, wind power utilization rate, et al. The exact index calculation method is focused on. The case study shows that the large volume of wind power could spoil the trend of system evaluation index and introducing CCGT could enhance the economy and reliability of power system and thus has superior practical value for grid-source coordination with large volume of wind power injection and refined management of generation schedule.
Study on the Fitting Methods of the Polyworks Software
Authors: Xiao Wu Hua , Li Ming
Published: July 2014

Standard is the root of the measurement, But a complete set of measurement specifications has not appeared in the applications of non-contact measuring technology at present.This article talks about the study of the two fitting methods of the Polyworks software, and puts forward when the Polyworks software deals with the circle, slot etc. features,we should choose the fitting method of minimal, and verifys the feasibility of the method through the relevant experiments.
The Stability Analysis for a Kind of Functional Differential Equations
Authors: Li Yan Ling , Hua Man
Published: July 2014

In this paper, we employ iterative analysis method to obtain both the existence and the stability of first order functional differential equations with impulses for periodic boundary value problem. Some new results are obtained.
Analysis on Light Environment and Efficient Creation in College Student Dormitory of Chongqing
Authors: Liu Meng , Li Zi Qiao , Ruan Li Yang , Yang Run Mu , Wu Jun Ya
Published: July 2014

This paper aims to probe into the feasibility and applying strategy of the energy-efficiency optimization of college dormitory lighting system in Chongqing. It takes a college dormitory located in chongqing as an instance, through questionnaire and field investigation, the conclusion indicated that the indoor illumination during the daytime cannot meet the relevant national standards. And over 80 percent of the students are unsatisfied with the indoor lighting. The research on the optimization program of Photoconductive lighting system and energy efficiency lamp system demonstrate these two programs can save 5.7 tons of standard coal per year and 1.67 respectively. Then model the photoconductive lighting system. Finally it takes the Photoconductive lighting system and energy efficiency lighting systems promoted and compared in college dormitory of Chongqing to draw a conclusion that the annual savings of the system are approximately 21.8-22.4 million kwh electricity which equals to 8.72-8.94 one thousand tons of standard coal. This quantity is equivalent to a half of the electricity consumption of Chongqing Dadukou 2012 January-April.
Application of BIM Technology on Energy Efficiency Building Design
Authors: Zhang Mei
Published: July 2014

According to the current application situation and domestic energy of our current building energy efficiency design analysis software, in view of the current traditional energy-saving design method can't meet the need of practical problems, put forward the BIM (building information modeling) analysis technology and building energy consumption are combined, anew design method for energy saving building. Application of BIM technology to create virtual building model contains all the information architecture, the virtual building model into the building energy analysis software, identification, automatic conversion and analyzing a large number of construction data information includes in the model, which is convenient to get the building energy consumption analysis.
Research and Analysis on the Heating Energy Consumption of Urban Residents in Hot Summer and Cold Winter Area of China
Authors: Li Jie , Qu Wan Ying , Wang Fang , Li Wan Zhen
Published: July 2014

The paper analyzes the energy-saving mode in hot summer and cold winter area through simulating and comparing the unique climate conditions and energy-using mode in this region, which are different from the northern heating areas. In hot summer and cold summer areas, the current per unit area value of heating electricity is low in urban residences, but it is based on the low heating temperature value and intermittent heating approach, and the energy consumption grows with the development of economy and the improvement of people's living standard. According to the regional climate characteristics and living mode, the decentralized efficient heating modes based on various pumps should be developed instead of central heating or central heating and cooling system.
Analysis on Determining Factors of Regional Construction Land Carbon Emissions
Authors: Lu Na , Sun Yong
Published: July 2014

It's important to discuss how to reduce construction land carbon emissions which is helpful for realizing low-carbon and efficient utilization of land. First, this paper chose three representative regions on construction land carbon intensity, namely Beijing, Hubei province and Guizhou province; second, based on LMDI method, it analyzed the contribution of different industrial carbon intensity effect and industrial structure effect to construction land carbon intensity in different regions between 2002 and 2008, the results show proposing the second industrials energy efficiency (65.11%) was crucial for Beijing, different industries's energy efficiency (110.5%) was important for Hubei, energy efficiency and industrial structure optimizing were crucial equally for Guizhou; finally it proposed different regions should find carbon reduction ways to local conditions.
Hangzhou Housing Demand Forecasting Model Based on BP Neural Network of Genetic Algorithm Optimization
Authors: Mao Yi Hua , Zhang Meng Bo , Yao Ning Bo
Published: July 2014

Hangzhou, the capital of Zhejiang province and a famous scenic tourist city in China, goes at the forefront of the country for its high real estate prices, which hold a very important position of orientation to pricing in the real estate markets of the Yangtze River Delta region and of the whole country as well. The price trend of Hangzhou's real estate is even related to the sustainable development of the city. This paper uses the macro data on the housing market in Hangzhou during 1999-2012 to establish a forecasting model which is based on BP neural network of genetic algorithm optimization. With MATLAB software exploited for programming and simulation, the prediction made by the model about the housing demand in Hangzhou and the subsequent re-examination show that the model has high precision. But due to the impact of the national macro-control policies on housing market, the predictive value of some years may fluctuate to a certain extent.
Practical Seawater Source Heat Pump Projects in China
Authors: Wu Jun Hua , Li Hai Shan
Published: July 2014

In China, it covers a sea area of about 4.73 million square kilometers, with a mainland coastline of about 18 thousand kilometers. Seawater is ideal as a heat source or sink of heat pump for heating or cooling and seawater source heat pump (SWHP) technology is a promising way to utilize ocean thermal energy. At present, SWHP has been well used in China. The article presents the application of SWHP in some cities, such as Dalian, Tianjin and Qingdao etc. Summary of these successful practical experiences of SWHP aims at informing the design for other similar projects.
Energy Saving Renovation of Existing Buildings on Campus Sunshade Design
Authors: Liao Yu Hang , Pan Lie , Xiong Minghui
Published: July 2014

The energy saving renovation of existing buildings on campus sunshade design are analyzed from the aspects of shading on campus.in view of existing residential buildings in the reality, puts forward the corresponding the possibility of shading design method, and the study of different building parts for sunshade measures, so as to achieve the effect of shading design and value.
Energy-Saving Design Research of Entrance Space for Commercial Building in Cold Region
Authors: Qi Shao Dong , Zhou Chun Yan
Published: July 2014

All of public buildings, commercial building is a special type of energy consumption larger, especially the energy consumption of air conditioning. This paper illustrates entrance space of commercial building in cold region of China as the research project, studying its energy-saving design. Aiming at the problems existing in the present designs, this paper puts forward some targeted solution measures: adopt reasonable entry form, increase thermal damping space, expand the entrance area and make full use of solar energy. These measures can reduce the heat loss of the entrance space, improve thermal comfortableness, and achieve the goal of energy saving.
Research on Environment Dependence of Thermal Conductivity of Expanded Polystyrene Foam Board
Authors: Sun Li Xin , Dong Hong , Yang Jing Fen
Published: July 2014

Thermal conductivity of expanded polystyrene foam board (EPS) is affected by the environment when used as insulation material in the building. In order to simulate the impact on EPS in the building and test the thermal conductivity of EPS in different conditions, we conducted a simulation study, including temperature and humidity simulation tests, freeze-thaw tests and mechanical tests. This study of EPS in different environmental conditions established a good foundation for further research on environment dependence of thermal conductivity in national codes.
Analysis of Indoor Air Quality for Residential Buildings in Lhasa, China
Authors: Zhang Ming , Yu Wei , Zeng Fan Zhi , Du Chen Qiu , Wang Xiao Fei
Published: July 2014

Adopting the methods of subjective questionnaire and objective test, the indoor air quality (IAQ) of residential buildings in Lhasa were analyzed in summer and winter, and the results were compared with that in Chongqing. Firstly, the data shows that the overall IAQ in Lhasa is better. Excepted total volatile organic compounds (TVOC), the concentration of formaldehyde, carbon dioxide (CO2), PM2.5 are low. Secondly, more than 80% residents accepted the IAQ in Lhasa, which means the satisfaction rate is high. Thirdly, the IAQ in Lhasa is better than that in Chongqing, such that the exceed-standard rate of formaldehyde is only 2.5% in Lhasa, while 85.7% in Chongqing, and residents’ satisfaction rate in Lhasa is higher. Meanwhile, there are some difference about IAQ in different seasons. The overall concentration of indoor pollutants in summer is lower than that in winter, and residents satisfaction rate on the summer IAQ is higher than winter in Lhasa. Finally, the main effect factors on IAQ were analyzed, and some suggestions to improve the IAQ of residential buildings were provided.
Numerical Research on Indoor Wind Environment of Green Building
Authors: Zhou Xiao Ping , Yan Cheng Wen , Li Wen
Published: July 2014

According to the relevant evaluation indexes in Zhejiang Province, this numerical research uses the PHOENICS software to analyze and evaluate the indoor wind environment of a public building, which declare the identification of green architecture design .The research was written in the form of a report, hoping to provide a reference for the peer.
Study on the Regeneration of Urban Historical Area from the Viewpoint of Workshops Matchmaking Local Participations
Authors: Huang Yi Chung , Chen Shih Ming
Published: July 2014

The historical area of an urban city has a long developing history and contains extensive and valuable cultural assets and associations. In response to the urban function and industrial structure change, the majority of the old and historic community development is stalled with decreasing population and increasing number of vacant and abandoned houses and lands, which seriously affecting the living environment of the remaining resident and destroys the spatial elements that are used to shape the historical streets. In recent years, the public sector and society organizations have put funds into the relevant environmental regeneration operation with more improvement mechanisms, and focus on how to promote participation and cooperation from private and local resources. However, the rational of public sectors and experts are often contained with short-term plans and emphasis on promoting regional tourism or cultural creativity, while ignoring the importance of participating opportunity of local residents and existing community resources. Most renovation of old buildings in the community are still based on the owners self-business and considerations or operation strategies, and the benefit to the surrounding public environment is limited. This research used a local house in the old community as working studios in order to observe and analyze the actual spatial resources of old communities identified by local workshop can be reactivated by regional development, and through continuous interaction with community organizations to attract stores and community residents to start caring about their surroundings and related public affairs to progressively develop a “learning exchange" between different professional groups in the community on public environment-related issues. Through such research, it helped to activate participation of local people, and to collect and compile comments on regeneration development of historical areas from the local community.
The Determination and Analysis of Volatile Organic Compounds in Public Buildings
Authors: Tan Hong Ying , Zheng De Zhong , Xie Wen Xiao , Zhang Ya
Published: July 2014

The total content of volatile organic compounds in public places has very important influence on human’s health. In this paper, the author takes indoor air, at a classroom building of a college and a big shopping mall in Qinhuangdao city, as sampling object, and using GC/FIT technology, measures the concentration of total volatile organic compounds (TVOC) and the concentration of benzene contained in indoor environment. Then, through the statistics and analysis of the tested data, taking advantage of the exposure parameter method in the EPA, the risks of environmental to our health are evaluated. The investigation results show that: (1) the contents of TVOC and benzene in the same building in heating day and that in non-heating day are slightly different. In addition, the measured value is higher in heating day; (2) the concentration of TVOC in the store is significantly higher than that in the college classroom building, but the determination values of TVOC in both two public places are lower than the national standard; (3) at some measuring points of the store, the contents of benzene are excessive; (4) through the concentration values of benzene compounds in the two types of establishments, calculates the probability values of causing cancer to the staff ,and they are beyond the value given by United States environmental protection agency (EPA) .
Application of Imitated Ecosystems in Urban Waterlogging Prevention
Authors: Wu Sheng Guang , Zhou Ming Tao , Ma Dan Dan
Published: July 2014

In the constantly advancing of urbanization, waterlogging disasters causing a serious impact on urban living, economic development, harmony and stability, etc.In order to solve these issues brought by urban waterlogging , this paper will combine the actual urban construction, accord the characteristics and causes of waterlogging, draw lessons from the water cycle model of natural ecosystems, ,and apply the imitation of ecosystems in urban waterlogging Disaster Prevention, to explore an efficient and orderly waterlogging prevention system, and strive to solve the problem fundamentally.
The Research to "Adapt to the Disasters" in the Traditional Architecture and Town
Authors: Gu Yun Li
Published: July 2014

Based on the principle of harmony between man and nature, " adapt to the disaster" emphasizes the initiative to adapt to nature, to adapt to the environment hazard, then,through transforming local environment, reduce or even avoid disaster losses, achieve the goal of lucky risk-averse.
A Primary Study about Water Quality Characteristics of Urban Constructive Sites Wastewater
Authors: Xiang Ke Jian , Xu Bing Feng
Published: July 2014

The wastewater originating from fifteen different constructive sites in Yunnan is selected as research subjects, and then detecting the possible pollution index in the wastewater. It turns out to be that unattainment rate of SS is as high as 93.5%; the average contents of COD and BOD5 are 632.52mg/L and 255.39mg/L, both of which are over the emission standards to 66.7%; production wastewater is weakly alkaline; other index is beyond the approved discharged standards slightly. The main pollution factors of urban constructive sites wastewater are SS, COD, BOD5 and pH. The secondary pollution factors are petroleum, TN, TP and animal and vegetables Oil.
Study on the Spatial Expansion Driving Force Mechanism of Carbon Source and Sink at Urban Fringe Areas
Authors: Qin Meng Lin , Ya Jing , Zhao Jing , Li Hang , Wei Xi Na
Published: July 2014

Urban fringe areas are the core carrier for the balance of carbon source and sink in urban regions and the concentration area for conversion of land used for carbon emission and sink. With the support of interpreted data of remote sensing images, through combination of the “Breakaway Point” Analysis Approach and the Index Bound Method, the paper obtains the range of fringe areas of Nanning City and discusses about the driving force mechanism of spatial expansion of lands used for carbon source and sink at the urban fringe areas. The results show that conditions of natural terrain, social and economic factors, development of communication and transportation, urban planning and control, social culture and mass psychology form the driving force mechanism of spatial expansion of lands used for carbon source and sink at urban fringe areas.
PCBs in Air from an Industrial Zone in a Coastal City-Tianjin, China
Authors: Li Zhi Yong , Zhang Yu Ling , Ni Shi Qing
Published: July 2014

The 23 air samples were collected from Tianjin Dongli industrial zone from July 2010 to May 2011 for the analysis of 84 PCB congeners to investigate the gas/particle partitioning. The total PCBs concentration ranged from 71.08 to 567.36 pg m-3 with the mean value as 307.78±137.45 pg m-3 and the seasonal trends were summer >winter >spring >autumn. Gas PCBs accounted for 77.47% of the total PCBs. The fraction of each gas PCB homolog increased with the decreasing chlorine atoms. The contribution of gas PCBs to total PCBs showed a strong seasonal variation with summer (92.44%)> autumn (85.16%) > spring (80.61%) > winter (42.70%). Tri-, tetra-, penta-PCBs and di-PCBs were the predominantly homologs in atmosphere from industrial zone in Tianjin. The natural logarithm of partial pressure of PCBs were well correlated with the inverse absolute environmental temperature (R=0.77). The steep slope of-3764 obtained from Clausius–Clapeyron plot indicated the influence of local PCBs sources.
Urban Waterlogging and Stormwater Management
Authors: Gu Lei , Gu Ning
Published: July 2014

Nowadays, the water recycling system and natural water cycle of many areas in the world were deeply influenced during the process of urbanization. How to control the negative-effect caused by the improper stormwater management and how to solve the problems of urban water logging have attracted the eyes of the world. New stormwater management offers a new way to solve the problems of urban water logging. First, this paper analysis the seriousness of the urban water logging problem. Then analysis the reason that caused urban water logging. Due to the basic reason caused urban water logging and the weakness of traditional drainage system, coming up with a new idea that using the new measure of stormwater management. This paper also lists the key point of new stormwater management and the concrete practice of measures. Finally, drawing a conclusion of this paper.
Effects of Liquid Carbon Source on the Biofilm Cultivation on Corncob Biocarriers
Authors: Liu Fang Mei , Li Guo Chao , Yang Tao , Sun De Si
Published: July 2014

In this paper, effects of carbon source on the biofilm cultivation were investigated by adding or not adding liquid carbon source with corncob used as solid carbon source and biocarriers. By adding or not adding glucose in the culture solution, effects of carbon source on the biofilm cultivation were determined by measuring COD, NO3--N, NO2--N and pH of culture solution after reaction. Results showed that adding liquid carbon source was beneficial to forming the biofilm with good denitrification performance, however, not adding carbon source could only form biofilm with bad denitrification performance and denitrification reaction only proceeded to the step of NO2--N after reaction. Results indicated that it was necessary to add liquid carbon source for the forming biofilm with good denitrification performance on the surface of corncob biocarriers.
Dual-Frequency Ultrasonic Assisted Ozonation for Degradation of Pesticide Wastewater
Authors: Wang Bin , Zhu Chang Ping , Yin Yu Zhen , Yao Cheng , Chen Bing Yan , Yin Cheng , Shan Ming Lei , Ren Qing Gong , Gao Yuan , Han Qing Bang , Tang Yi Bin , He Zhen Bing
Published: July 2014

Dual-frequency ultrasonic assisted ozonation was proposed to degrade pesticide wastewater. The frequencies of ultrasound were 28 kHz and low-MHz (208 kHz, 495 kHz, 679 kHz and 890 kHz). The influence of ultrasound frequency was investigated in this paper. The electrical conductivity of deionized water was measured under different conditions, and degradation rate of acephate solution was used to verify degradation effect of the treatment. The results implied that the 208 kHz system was suitable for ozone dissolving and 495 kHz system was suitable for acephate degradation.
Immobilization Technology and Construction of Carrier
Authors: Ji Kai , He Yan Qing
Published: July 2014

Analysls the general method of microorganism immobilization and the character of thc common used carrier;And study the removal efficiency using the immobilized microorganism grain to treat micro-polluted , analysis the influence of the carrier constrction on thc microorganism immobilization and the activity of tbe immobilized microorganism.
Double-Catalyzed Base-Acid Synthesis of Chestnut Shell Pigment Resin Cross-Linked with Formaldehyde
Authors: Zhou Mi , Su Ping , Qi Jian Hua , Hu Yong , Yao Zeng-Yu
Published: July 2014

An approach to synthesize melanin-formaldehyde resin has been developed. The pigment extracted from chestnut shells, a bio-waste from food industry, was employed as the melanin. The synthesis implemented by a double-catalyzed process, namely, base-catalysis and then acid catalysis. The process was optimized and its performance was evaluated on the basis of the cation exchange capacity of the obtained resin. The optimum reaction condition was found to be base-catalysis using NaOH at pH 11.2, 70 °C and the formaldehyde (37%, m/v) to melanin ratio of 2.33 mL/g for 4 hours and then acid-catalysis by HCl at pH 1.5 and 80 °C for 4 hours. The resin can be used as an effective and inexpensive sorbent for Cu (II) removal from aqueous solutions.
Research Progress of Ships Waste Treatment Technology
Authors: Wang Xiao Jie , Shen Qiu Hua , Ji Yun Zhe
Published: July 2014

This paper describes the types of ships waste and relevant emission requirements, analyzes currently advanced waste treatment technology at home and abroad, existing waste treatment status and developing directions in various countries, which provides theoretic and application references for China’s ships waste treatment and equipment selection.
Study on Preparation of Flocculant in Low-Temperature Wastewater
Authors: Wang Xiao Hui , Dong Li Ming , Wang Ren Li , Shi Yin
Published: July 2014

This paper mainly investigate how to use cheaply-priced, safety and sanitate of natural clay or nanosilica as coagulant and adsorbent combined with polyaluminium chloride to treat low temperature and low turbidity water .Wastewater in paper mill was used as the water samples, by measuring the absorbance and the turbidity of the water samples to determine the flocculation effect. The results showed that flocculation effect of water samples with different natural clay and nanoSiO2 combined with PAC had the same change tendency. The order of coagulation effects was bentonite > diatomite > kaolin > attapulgite. nano-SiO2 as coagulant associated with PAC could attain best coagulation effect with least amount from the analysis of absorbance or turbidity.
Research on the Theory of CHP System in Controlling Air Pollution in Northern Cities
Authors: Jing Ling , Wang Xin Xia
Published: July 2014

This paper in view of the northern city produce large amounts of carbon dioxide in winter for heating and cause increasingly serious air pollution when burns coal, puts forward supply theory of combined heat and power (CHP) systems to provide housing and shops daily hot water supply, electricity, heating, cooling energy and designed a validation to test process and verify the formula of Combined Heat and Power systems , traditional heating system and air conditioning system in carbon dioxide discharge. Demonstrate the theory basis and validation method for using new type of heating mode when heating season in north.
The Methods of Agricultural Residues Disposal and their Externalities in Xinyi, China
Authors: Xia Chun Lian
Published: July 2014

The survey shows that there are mainly three methods of agricultural residues disposal in the Xinyi region. About 6.79×105 t of agricultural residues have been generated during the summer and autumn harvest in Xinyi in 2013, and 62% of them were burned in the field, 14.8% were thrown into cannels and rivers, and 20.7% were shredded and incorporated into soil. The burning of agricultural residues results in negative externalities by bringing large amounts of pollutant emissions. In order to reduce agricultural residues burning on the farmland and encourage the incorporation of crop residues into fields, the local government should give more subsidies to make the use of shredding machine free or at least cheap enough to be accepted by farmers in the future.
Applications of GIS in Regional Planning
Authors: Gu Ning , Gu Lei
Published: July 2014

The technological advantages of GIS make it be a useful tool in city and regional planning, such as planning data analysis, spatial analysis and decision making .This paper introduced the specific use of GIS in regional planning and summarized the use of GIS in different aspect of regional planning. Forecasting the way to use GIS in G3 and G4times and the tend ,the development of GIS in the future.
Spatial Distribution and Pollution Evaluation of Heavy Metals of Surface Sediments in Nansi Lake
Authors: Li Shuang , Liu Yi Ming , Sun Yuan Yuan
Published: July 2014

The heavy metals contents of 29 samples were tested in Nansi Lake which was divided into 5 parts. The heavy metals included Hg, Cd, Cr, Pb, Ni, Cu, Zn and As. The spatial distribution of heavy metals of 5 Lakes region has been received. The pollution of heavy metals was with evaluated with Igeo and RI. The results showed that: Nasi Lake has been polluted by heavy metals in middle level, and As, Hg, Cd and Pb were more serious. The heavy metals pollution of the part in north were more serious than in south, except the As and Cd. Overall, the heavy metals pollution in the north Zhaoyang Lake was the most serious, followed by the Nanyang Lake, Weishan Lake, Dushan Lake and the south Zhaoyang Lake.
Fuzzy Evaluation Method of Sustainable Development of Mining Area
Authors: Ding Ri Jia , Yin Lu
Published: July 2014

With respect to mining area, to establish an evaluation system that aims to reflecting its actual condition and assessing its sustainable development ability has been of importance. In this paper, we discussed the meaning of sustainable development and evaluation factors, and then built a fuzzy comprehensive evaluation model to evaluate the sustainable development condition of mining area.
Thermal Desorption Experiment of Polycyclic Aromatic Hydrocarbons (PAHs) Contaminated Soil Used as Cement Raw Meal
Authors: Dai De Wei , Li Chun Ping , Tian Li Zhu
Published: July 2014

Sample polluted soil surrounding Shougang as object, TG, thermal analysis of raw soil and cement raw meal experiments were made, the results show that: the polluted soil contains a variety of PAHs of organic pollutants, the total concentration of PAHs is about 156.39ppm. PAHs contaminated soil can be divided into three stages of weight loss at 850°C: water losing stages, organic matter decomposition stages and inorganic carbonate decomposition stages. With the increase in heating temperature, removal rate of total PAHs in raw soil is high. Using polluted soil as cement siliceous raw material, except naphthalene, acenaphthene, two hydrogen acenaphthene and anthracene, other organic compounds of PAHs have residues at 300°Cand small amounts of phenanthrene have residue at 600°C, means cement raw material has certain adsorption of PAHs pollutants. Therefore, when co processing PAHs polluted soil into the cement kiln, considering should be focused the content of pollutants in flue gas volatilization and C2 raw mill especially.
Trend Analysis and Quality Assessment of Sediment in the Marine District with High Strength Exploitation
Authors: Li Ming Chang , Zhao Ying Jie
Published: July 2014

The environmental quality of sediment is very essential aspect of marine environment. In this paper, three indexes of sediment named that petroleum, Pb and Zn are selected for analyzing the trend and evaluating the environmental quality in the Caofeidian marine district, Tangshan Bay. With the six years’ field data, the research results show that the sediment quality is good and marine exploitation has certain influence on the sediment.
The Analysis of the Characteristics and the Research Status of the Recycled Concrete
Authors: Wang Bing , Liu Xiao , Yu Xiao
Published: July 2014

Every year our country will produce large amounts of waste concrete, bring negative effect to the ecological environment. How to realize the recycling of waste concrete utilization has great significance for the sustainable development of ecology, environmental protection and social. This paper introduces the characteristics of recycled concrete and domestic experts and scholars research on it, and put forward prospect of the future of recycled concrete.
Pretreatment Effect on the Stability of Coal Hexane Coal-Water Suspension
Authors: Bekturganova Neila E. , Kerimkulova Moldir Z. , Musabekov Kuanyshbek , Baibulova Laura , Orynbasarova Manara , Makanova Gulshat
Published: July 2014

Stability of coal-water suspension (WCS) is one of the main criteria for obtaining fuel efficient. In the present work we investigated the sedimentation stability of coal-water suspension of 35% (in the presence and absence of hexane) stabilized by sodium dodecyl sulfate. Found that pretreatment of coal hexane (before being crushed) and further stabilization of coal-water suspension of 35% sodium dodecyl sulfate at concentrations of 0.8-.1.0% helps to ensure a stable dispersion system.
Investigation and Analysis of the Cultural Buildings of Industry Remains in Yanbian
Authors: Wei Mo , Zheng Zheng
Published: July 2014

As the first industrial heritage general survey being on, a class of cultural buildings with high value have been discovered. Differ from the industrial buildings industry with production function, these building were used in workers` daily life. With early construction time and special shape they gathered to a unique architecture style. Along with the rough city`s fast-development today, the product of the industrial age is in a perilous state. By analyzing the form and value, I try to argue for the conservation on them from the city development perspective.
Anti-Damage Performance of Asphalt Concrete Reinforced with Different Position Grid
Authors: Sun Ya Zhen , Xin Zhao Yang , Zhang Si Bo
Published: July 2014

This paper uses Sidoroff damage model to research asphalt concrete (AC) trabecular tensile damage. Damage factor D is used to estimate the damage degree of AC. And the optimum position of grid overlay is obtained. In order to simulate the trabecula without grid and grid in different position, an AC trabecular bending test model is established in ABAQUS. From the analysis of AC damage, it can retard AC damage efficiently when grid overlay is located on the bottom of trabecula. The results of the research can offer the reference of controlling on damage cracking in the process of design and construction of asphalt pavement.
Analysis on Changdexincheng Development Driving Force Factors
Authors: Sun Rui Feng , Zhu Li
Published: July 2014

Driven by the national economic strategy, Changdexincheng will put forward a higher request to the city construction as a starting and guiding area of the "Changdongbei" economic zone, as well as analyze the driving force, dug deeper potential, summarize the main driving force factors of its development, and provide reference for development of similar cities.
Study on Durability of Granulated Crumb Rubber Asphalt Pavement Based on TPS High-Viscosity Asphalt
Authors: Yang Yong Shou , Dong Qiang
Published: July 2014

In order to improve the durability of granulated crumb rubber asphalt pavement, different amount of TPS modifier are added into granulated crumb rubber asphalt mixture to do tests of water-boiling, water immersion, immersing Marshall, cantabro immersion and some other indoor experiments. Through comparing with base asphalt and SBS modified asphalt, we found that the adhesion ability of asphalt and mineral aggregate and crumb rubber were granulated after adding TPS modifier. The water stability of granulated crumb rubber asphalt mixture is improved. The durability of granulated crumb rubber asphalt mixture has also been improved dramatically. In additions, the optimum mixing volume of TPS for granulated crumb rubber asphalt mixture is 12%; the mixing temperature of asphalt mixture is 185°C.
Moraea orthrosantha (Iridaceae: Irideae), a new species from Namaqualand, South Africa
Authors: Goldblatt Peter , Manning John C.
Published: July 2014

Background: Recent fieldwork in Namaqualand, Northern Cape Province, South Africa,indicated the existence of an undescribed member of Moraea subgenus (subg.) Umbellatae Goldblatt J.C.Manning, a small, early branching clade of the genus.Objectives: To describe the new species of Moraea subg. Umbellatae.Method: Recent collections were compared with existing material and published literature.Results: Moraea orthrosantha is described as a new species, differing from Moraea margaretae inthe well-developed nodes between the cauline leaves. Two earlier collections of the species weremisidentified as M. margaretae.Conclusion: The new species increases our understanding of the diversity of Moraea in southernAfrica and assists in conservation assessments of both M. margaretae and M. orthrosantha.
Retracted: Systems of innovation and agricultural productivity in African economies
Authors: Ayinde OE , Muchie M , Folaranmi DB
Published: July 2014

This article has been retracted by the editor of AFRREV STECH: An International Journal of Science and Technology on 06/07/2015. For further information please contact the editor: jafrrev@yahoo.com