bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Entire Roll Type Shape Meter of Cold Rolling Strip and its Industrial Application
Authors: Yu Bing Qiang , Yang Li Po , Liu Hong Min
Published: October 2012

In order to increase shape measuring precision of cold strip, based on the shape detecting principle and the digital signal technology, a new entire roll type shape meter is developed thorough theoretical analysis and industrial adjustment to develop the shape detecting roll, the shape signal processing method, the original signal compensation mechanism and so on. The shape meter has good performance and stability, which can effectively avoid the scratch of steel strip surface, accurately detect real online strip shape and provide accurate online shape datum for shape control system. It was applied in 1250 mm cold rolling mill, the actual industrial tests prove that the shape signal was stable and reliable, met the harsh condition and the online technical requirements, and could improve shape quality significantly. And the shape close loop control of the 0.18 mm thin cold strip was successful realized.
Technology Innovation of Short Stress Path Mill and Flying Shear
Authors: Zhou Lin , Ke Zun Feng , Zhao Ying Biao , He Wei Wei , He Li Ping
Published: October 2012

In order to improve the accuracy and performance of long products, increase the metal yield, more better ensure high speed and continuous rolling, the structure and principle of short stress path mill and flying shear which are the key equipments in rolling line are emphasized in our research work. Some new technology method and rational mechanical structure are proposed and has been applied to optimize equipments. The requirements of various products and high quantity production in long milling products are ensured.
Application of Probabilistic Neural Network in the Rolling Rhythm Evaluation of Hot Strip Mill
Authors: Chen Chao Chao , He An Rui , Shao Jian , Liu Jian Hua , Zhou Jie
Published: October 2012

In this paper, the probabilistic neural network and prediction thought are combined to evaluate hot rolling rhythm. An evaluation model of hot rolling rhythm based on PNN network is established. To verify the validity of the model and predicted results, the PNN network model is applied to practical production of a hot strip mill and proves to be a model of simple structure, fast calculation, high prediction accuracy and strong generalization ability, which is able to substitute for the conventional evaluation model based on the empirical formula and empirical data.
Study on the Relationship between Chatter Mark Vibration and Rolling Skid for a Twenty-High Roll Mill Based on the Measured Torsional Strain of the Main Drive Shaft
Authors: Wu Sheng Li , Han Rui Mei , Xiao Hui Fang , Shao Yi Min , Yuan Yi Lin
Published: October 2012

The chatter mark vibration generated in the rolling process of the twenty-high roll mill not only significantly affects the mill performance, but also reduces surface quality of the strip steel. To identify the excitation source, the online monitor for the real time torsional strain of the main drive shaft is performed for a Sendzimir twenty-high roll mill. A corresponding relationship between the torsion variation of the main drive shaft and the period variation of the working roller is observed. The dynamic rolling skid model is further established and the torsion variation of the main drive shaft is simulated. The calculated results are compared with the measured torsion variation signal of the main drive shaft for without chatter mark vibration. The corresponding characteristics between the chatter mark vibration and the rolling skid is obtained. The results not only support the effective of the established model, but also reveal the relationship between the chatter mark vibration and the rolling skid, which provides for the development of monitoring method for the chatter mark vibration of the twenty-high roll mill.
Situations and Prospects of the Study on Steel Warm Rolling Technology
Authors: Peng Yan , Liu Hong Min , Li Zhi Jie , Xiao Li Zi , Ge Lei
Published: October 2012

Based on analysis of steel production logistics and energy exchange process, some aspects about the steel warm rolling technology was introduced, including the principle, technical characteristics, application prospect, challenge, especially the significance on energy conservation and environmental protection. With the conclusion indication, warm rolling technology has vast application though facing many challenges in industrial production.The research fieldof warm rolling cover the plate flatness and gauge control, microstructure and property control, integration control of whole procedure conforming to each shape, corresponding equipment improving, and so on.
Analysis of Issues and Measures on Low Carbon Development in Power Industry
Authors: Niu Dong Xiao , Li Hong Juan , Zhang Hong Yun , Wang Guan Qing
Published: October 2012

The deterioration of the environment is much more serious, which leads to low carbon development of power industry overwhelming, this paper summarizes and analyzes the problems of low carbon development in China’s electricity industry, including the higher cost of low carbon energy construction, unreasonable energy structure, backward level of technology , difficulties of new energy paralleling in power grid; On the other hand, points out some measures towards low carbon development, including determining the price policies of renewable energy, levying carbon taxes and government subsidies, strengthening the construction of western electric facilities, optimizing the power structure, developing new energy technology, applying intelligent grid as well as promoting the international exchange and cooperation. We hope that the analysis can give certain reference for the low carbon development of China’s power industry.
China's Carbon Emissions Pricing Options: Based on Black-Scholes Model Testing
Authors: Zhou Li Li
Published: October 2012

In this paper, by analyzing the cause of the weak power for China's carbon emissions, we design the trading and OTC options contracts of China's carbon emissions. By testing we found that the pricing method can indeed improve the pricing power of carbon emissions and acquire more transactions in negotiations .The policy implications of this article: Firstly, China should combine with domestic and international progress to plan the framework of China's carbon emissions trading as soon as possible. Secondly, we also launch the research of carbon emissions trading market and experimental work; the third, establishing trading center with the market-oriented to guide China's implementation of greenhouse gas emission reduction projects and to achieve Low-cost emission.
An Empirical Study on Valuing Natural Resources Economic Values Using Benefit Transfer Method
Authors: Zhao Ling , Wang Er Da
Published: October 2012

In the recent years benefit transfer method has become a hot research area in the evaluation of non-market natural resources. Amide a variety of adopted research methodologies,Meta-regression benefit transfer method has become a mostly used one.In this paper, a large dataset based on the empirical non-market valuation study results reported in the United States was analyzed. This dataset is used to estimate a meta-regression model that was used to predict the corresponding recreation resources and activities values in China. The convergent validity of the meta-analytic international benefit transfer is tested against the observed recreation activity values in China. In the process, a relative percentage error indicator, paired t-test, and the Wilcoxon Signed Rank test are used. The mean benefit transfer error is 18.74%, an acceptable value for international transfer. These results suggest that the international benefit transfer could be reliably used in valuing outdoor recreational activities in China.
Study on the Vegetation Recovering Effect of Oily Soil after Bioremediation
Authors: Sang Yu Quan , Zheng Jing Tang
Published: October 2012

The vegetation recovering effect of oily soil after bioremediation was studied and contrasted with the background of natural environment in this paper. The results indicated that the vegetation productivity of oily soil after microbial remediation can be restored to its original level, but is not enough to rely on natural recovery of vegetation. The unit productivity of oily soil only through microbial remediation was obviously lower than natural background, and the biocommunity and its vertical structure were relatively simple. But the unit productivity of oily soil after phytoremediation was nearly similar to the uncontaminated soil.
The Research of Black Sweet Corn Pigment Extraction and Stability
Authors: Yang Ping , Liang Yan
Published: October 2012

The tolerance stability of black sweet corn was investigated in this paper. The results showed its tolerance to light is weak, while it can be proved that the tolerance to heat is strong. The stability of melanin in acid, alkali, deoxidant and Na+, K+ solution is relatively good, while the stability in oxidant, Al3+, Fe3+ solution is bad.
Activity Assay of Microalgae Heterosigma akashiwo in Ballast Water by Neutral Red Staining Using the UV and UV/O3 as Inactivation Methods
Authors: Yu Hua Feng , Liu Guang Ming , Huang Hong
Published: October 2012

Neutral red is mainly used to identify and detect the activated state of cells, which accumulates in the lysosomes of uninjured cells. In this paper the influence factors on microalgae of neutral red concentration, staining time, algal cell concentration and pH were studied, which revealed the optimized conditions. The maximum staining ratio occured after 8 min staining with 0.22 g•L-1 of neutral red at pH 7.3. The algal cell concentration had no obvious effect on staining ratio. The UV and UV/O3 process were also investigated for ballast water treatment using heterosigma akashiwo as an indicator. Compared with individual unit processes using UV, the inactivation efficiency of heterosigma akashiwo by the combined UV/O3 process was enhanced. The algae after treatment was unable to re-grow and it revealed that the algal activity assays can reflect the inactivation effect more correctly than cell density, which suggest the neutral red staining method has potential for viability detection of microalgae in ship’s ballast water.
The Effect of Plant Growth Regulator for Phytoremediation
Authors: Hao Han Zhou , Shen Yu Hui , Zhong Ru Gang , Fu Zheng Yi , Liu Cheng Wu , Zhong Xue Bin
Published: October 2012

Phytoremediation is the use of vegetation for in situ treatment of contaminated soils, sediments, and water. It is best applied at sites with shallow contamination of metal pollutants. The term “assisted phytoextraction” usually refers to the process of applying a chemical additive to contaminated soil in order to increase the metal uptake by crop plants. In the process of phytoremediation, applying plant growth regulator can promote phytoextraction effects. This paper reviewed the effect of the plant growth regulator for the biological growth, plant transpiration and heavy metal stress. the increase in metal accumulation in upper parts of plant could be related to both the role of PGRs in the enhancement of plant resistance to stress (as toxic metals) and the increase in transpiration rate, i.e. flux of water-soluble soil components and contaminants by the regulation of stomatal opening.
Phytotoxicity, Adsorption, Uptake and Removal of Azo Dyes in Sunflowers
Authors: Xie Hui Cheng , Li Chong Rong , Wang Li , Li Hui
Published: October 2012

In order to explore decolorization mechanisms of sunflowers to different azo dyes, we made a mass balance on dye removal pathways. Though hydroponic experiment and desorption test, we measured and calculated the total removal ratio, the adsorption ratio and uptake ratio of dyes. Phytotoxicity of dyes to sunflowers also determined through normalized relative transpiration (NRT) and relative growth rate (RGR). The results showed that sunflowers can survive in 20, 40 and 80 mg/L Amido black (AB), Orange G (OG) and Methyl orange (MO). The average color removal ratio of AB, OG and MO in 15 days was 72.14%, 40.21% and 34.42%. The average adsorption ratio of AB, OG and MO was 3.36%, 4.74% and 22.49% respectively. The average uptake ratio of AB, OG and MO was 68.78 %, 35.46 % and 11.94 % respectively. It is concluded that the main pathway of removal of AB and OG by sunflowers is uptake and the main pathway of removal of MO by sunflowers is adsorption. The significant difference of the apparent TSCF of sunflower for AB, OG and MO showed that the removal ability of sunflower to azo dyes is related to the specific chemical and physical property of the dye.
Study on Photocatalytic Properties of Anatase Phase TiO2 Synthesized by Ultrasonic-Assisted Hydrolysis
Authors: Xia Jin , Jin Ri Ya , Guo Kai Xuan , Yang Si Jing
Published: October 2012

Titanium dioxide powders were synthesized by ultrasonic-assisted hydrolysis reaction of titanium tetra-isopropoxide at the low-temperature. The samples were characterized by Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD). The photocatalytic activity of samples were investigated by the degradation of methyl orange under UV light radiation (6W, λ= 352nm) at room temperature. The results indicated that the products were mainly composed of high homogeneity anatase phases, and the methyl orange degradation rate can reach more than 90% under ultraviolet irradiation 180min. The photocatalytic activity of the samples prepared by ultrasonic method is higher than that of the samples prepared by conventional hydrolysis method.
The Study of Bioleaching to Removal Heavy Metals in Sewage Sludge
Authors: Song Yun Peng , Zhang Jun , Li Liang
Published: October 2012

Bioleaching as an effective method is used to remove the heavy metal from sewage sludge, but the current study of this method in China is little. This article describes the main factors that affect the effect of bioleaching, including sludge solids concentration and type, substrate type and dosage, temperature, aeration rate, microbial species and inoculum, initial pH and etc.
Experiments on Restoration Effects of Melilotus Offcinalia in Various Types of Ecological Environment
Authors: Liang Shuang , Tang Jie , Lin Nian Feng , Liu Yan Yan , Lou Yun
Published: October 2012

Nowadays the global ecological and environmental problems have become increasingly prominent. Land deterioration seriously restricts the regional development of society and economy and threats to the survival of humans. We carried out a series of experiments on ecological restoration of melilotus offcinalia in various types of environment like strong saline-alkali land, barren land and mine land for the first time. The comparison of soil indexes between restoration soil and background soil shows that melilotus offcinalia can removal off salinity and base of the strong saline-alkali soil and increase the nutrient contents in various types of soil. Moreover, melilotus offcinalia can improve physical properties of soil, which will increase the land coverage and improve land productivity. Consequently, melilotus offcinalia can be promoted in stages for soil amelioration and ecological restoration in various types of ecological environment.
Cluster Analysis on an Endophytic Homoharringtonine (HHT)-Producing Fungus Strain from Cephalotaxus oliveri Mast
Authors: Dong Li Hui , Fan San Wei , Ling Qing Zhi
Published: October 2012

Homoharringtonine(HHT) is very important for leucocythemia therapy and is extracted mainly from rare or endangered plants belonging to cephalotaxus. Twenty strains with various morphological structures were isolated from Cephalotaxus oliveri Mast, in which strain of gyzy-6 could produce HHT testified by TLC and HPLC analyzing the extracts from fermentation broth and were grouped into Schizophyllum sp. based on the Neighbor-Joining approach to reveal the internal transcribed spacer (ITS) sequence.
Researches on Chitin from Pupa Skin
Authors: Wang Jian Gang , Yin Wei
Published: October 2012

The composition and structure of pupa skin were studied by means of chemical analysis and electron microscopy. The main composition and the content of chitin were determined. Therefore, the utilization value of the pupa skin was confirmed and a preliminary exploration was made on the process of extracting chitin from the pupa skin, and a property comparison was conducted between chitin from pupa skin and that from shrimp and crab.
Technical Study of Fly Ash Three-Slag Base Course Materials Modified with Washed-Out Slurry
Authors: Shen Jian Sheng , Sun Jia Ying
Published: October 2012

Based on the effects of fly ash three-slag mixture by industrial solid wastes (washed-out slurry),the paper has been approached to the modified problems of the fly ash three-slag mixture. The strength and durability tests suggest that the fly ash three-slag mixture modified with washed-out slurry have the features of high-early-strength and higher durability.
Casting Recycling of Animal Protein-Based Binder Sand
Authors: Shi Hong Yu , Liu Hui , Guo Shu Lan
Published: October 2012

This study is focusing on the protein sand binder on the performance of wet sand, and explores the protein binding mold sand reusability and reclamation. With thermal analysis and scanning electron microscopy testing, and by comparing with other traditional technologies, the experimental result shows that it is a more environmental friendly.
Fabrication of Al2O3-Glaze Composite Ceramic Coating and its Erosive Wear Behavior
Authors: Wang Li Ge , Gu Xiao Bing , Zhang Yang , Wang En Ze
Published: October 2012

Al2O3-glaze composite ceramic coating was prepared with enamel coating as transition layer and Al2O3 as hard antiwear facies on Q235A steel surface in this paper, and the effects of the particle size and volume fraction of ceramic coating on erosive wear behavior of composite coating were investigated. The results show that enamel performance of ceramic coating is better when the particle size of glaze is 16µm; the anti-wear property of composite ceramic coating is improved by adding Al2O3 particle, and the coating with 50μm particle size and 40% volume fraction particles, eroded at 45° impact angle at 15MPa pressure, is the best, which is 4.2 times than that of the enamel coating without Al2O3.
Facile Synthesis of TiO2 Microspheres with Super High Rate Performance
Authors: Wang You Rong , Chen Peng , Zhang Xian Wang , Wang Jia , Cheng Si Qing
Published: October 2012

The development of new electrode materials with high storage capacity is indispensable for improving rechargeable lithium batteries. Herein, high performance TiO2 microspheres have been fabricated by a facile solvothermal method. The obtained TiO2 microspheres were investigated by the measurements of X-ray diffraction pattern, scanning electronic microscopy, and electrochemical tests. As the rates increase from 1C to 20C, the TiO2 composites display high discharge capacities of 414.6 mAh g-1 for the ﬁrst cycle at 1 C and 244.6 mAh g-1 at 20 C over 100 cycles. CV experiments indicate that there are two peculiar pairs of cathodic/anodic peaks occurred in the range of 1.0-3.0V, which clearly demonstrates that the structure of the TiO2 microspheres here is quite different from the ordinary anatase TiO2. Excellent rate capability and cycle ability are ascribed presumablely to the unique structure.
Device and Process Study on Vacuum Multiple-Effect Membrane Distillation
Authors: Lü Shuang Jiang , Gao Qi Jun , Lü Xiao Long
Published: October 2012

Based on the high energy consumption of membrane distillation (MD) process and the excessive cooling water consumption issues, a new type of vacuum multiple-effect membrane distillation (MEMD) process was designed. The process set up a special multiple-effect evaporation zone for the first time where heat exchange and MD happened at the same time. The experiment studied the effects of the membrane area in main evaporation zone, feed fluid flow of the lumen side of membrane module and module length of multiple-effect evaporation zone on MEMD process. The equivalent flux of the system can reach the maximal value (34.8 kg•m-2•h-1) and the additional cooling water consumption is only 30.8% of traditional VMD process when the feed inlet temperature of the module and the membrane area in the main evaporation zone are 345 K and 0.10 m2, feed fluid flow is 4.0 L•h-1, and the module length is 868 mm of multiple-effect evaporation zone. The MEMD process has a wonderful industrial application prospect.
Influence of Chemical Conditioning on Electroosmotic Dewatering Behavior for Activated Sludge
Authors: Yu Xiao Yan , Zhi Su Li , Wang Run Juan , Zhang Shu Ting , Lu Xue Bin
Published: October 2012

Applying electroosmosis to sludge dewatering practically, methods for improving electroosmotic dewatering must be explored. The influence of initial pH, adding Al2 (SO4)3 dose and ash content in sludge on electroosmotic dewatering behavior was investigated. The results show that acid or alkaline environment is unfavorable for electroosmotic dewatering, especially initial pH of sludge closing to the isoelectric point, electroosmotic dewatering behaves worst. With increasing Al2(SO4)3 coagulant-aid dose, the decreasing rate of water content becomes slower gradually during electroosmotic dewatering. Besides, higher ash content in sludge has a better effect on vaccum filtration, but slightly impact on electroosmotic dewatering. When ash content increases to 69.9% from 52.4%, final water content reduces to 64.3% from 78.3% using vaccum filtration, and the decreasing amount of water content by electroosmotic dewatering ranges from 16.5% to 12.3%.
The Properties of Ultra-High Pressure Treated Chitosan Edible Films
Authors: Niu Yan Qing , Chen Shan Shan , Gao Yu Peng , Ma Zhong Su
Published: October 2012

The Ultra-High Pressure (UHP) technology has not been reported in modifying chitosan. This paper studied the properties of UHP treated chitosan edible films. The results show that the Ultra-high Pressure (UHP) treatment can increase the Tensile Strength of the chitosan films and lower the Elongation percentage, Water Vapor Permeability and Oxygen Permeability rate values. The structure of treated films is more stable and compact than control samples. In the experimental test range, the optimum condition for UHP treatment is 400 MPa.
Study of the Influence of Rear Earth Elements on Microstructure of Pearl Surface Observed by SEM
Authors: Shi Wei Lin , Jin Ye Fei , Ge Yao
Published: October 2012

We investigated the influence of rare earth element (REE) Ce on the surface microstructure of bivalves pearl in the scaled of micro and nanometer range by means of scanning electronic microscopy (SEM). And we discussed the relevant of surface microstructure and lustrous of pearls to the concentration of REE in culture water by analyzing the influence of additive REE on the surface microstructure. We found that pseudo-hexagonal relatively grow slowly when REE Ce was absent in the culturing water, and the pearls surface were mainly build up by spindly aragonite blocks. On the contrary, the pearls grow quickly when REE was added in the culturing water, and the pearls surface were chiefly composed of regular hexagonal aragonite blocks that is the most idea blocks in crystallography. The results show that an appropriate quantity of Ce will promote the development and growth of pearls, and enhanced the lustrous of pearls significantly. However, as the REE concentration is large, the blocks composed of pearls became to around, and oval dics, thus leading the roughness increasing of pearls surface and the lustrous decrease.
Study on Synthesis Technology of Glyoxylic Acid Fine Chemicals
Authors: Zhang Shu Xin
Published: October 2012

Glyoxylic acid is an important intermediate of organic chemical and it can generate dozens of fine chemical products. At present, its production process is mostly in the manufacturing of 30% to 50% solution of glyoxylic acid. Due to the presence of large amounts of water, solution of glyoxylic acid in aqueous solution is difficult to meet the needs of medicine, food and other industries which require high-purity crystal glyoxylic acid products. The experiments show that synthesis process using crystal glyoxylic acid as raw material in the manufacturing of allantoin instead of solution of glyoxylic acid is reasonable and feasible. Compared with other synthetic methods reported in the literature, this method has advantages of simple technology and high yielding. Solvent inspection results show that solvent polarity has some influence on the reaction results. That the polarity is too strong and too weak is not conducive to reaction. The mixed solution of tetrahydrofuran and ethanol is suitable reaction solvent.
Adsorption of CuCl2 on Mg-Al HTlc: Effect of EDTA and Addition Sequences
Authors: Zang Yun Bo , Wu Nai Ying
Published: October 2012

In this study, removal of copper ions from aqueous solutions by synthetic Mg-Al-HTlc was investigated as a function of contact time, EDTA and addition sequences at room temperature. It is found that HTlc could reduced copper ions concentration effectively. The kinetics closely fit pseudo-second order kinetics with necessary time 9 h to reach equilibrium. The sorption process followed langmuir model. The maximum sorption capacity calculated was found to be 39.4 mg/g. The presence of EDTA and addition sequences could affect sorption of Cu(II) onto HTlc.
Study on the Structure and Performances of Kapok Textiles
Authors: Lou Li Qin
Published: October 2012

Kapok fiber has many excellent Performances. the surface and cross section of the kapok fiber were observed. These performances of the distribution of length and fineness, moisture regain, acid and alkali properties, and dyeing property were tested and compared for the kapok fiber, colored cotton fiber and white cotton fiber. The fabrics of same weave structure paramater were developed and the warmth retention property wewe tested. The results show that the surface of the kapok fiber is smooth，Cross section of the kapok fiber is round with hollow-structure. The length and fineness of the kapok fiber was lower than white cotton fiber and colored cotton fiber. The hygroscopicity and moisture guide properties of the kapok fiber was better than white cotton fiber and colored cotton fiber, the dyeing property of the kapok fiber was worse than white cotton fiber, the kapok fiber is alkali-resistance and non acid-resistant. The fabrics of the kapok fiber has better warmth retention property.
Mechanical Properties of Soy Protein Isolate and Whey Protein Concentrate-Based Films
Authors: Gao Yu Peng , Wang Zhe , Niu Yan Qing , Ma Zhong Su
Published: October 2012

The mechanical properties difference between soy protein isolate-based film and whey protein-based film was researched. The elongation at break, tensile strength of the pure soy protein isolate film both are better than that of the pure whey protein concentrate film, which is respectively 10 times and 25 times. After compounding the property of the whey protein concentrate film ameliorates. The elongation at break, tensile strength of the whey protein concentrate film increases respectively by 9 times and 16 times after the glutin is mixed. The elongation at break, tensile strength of the whey protein concentrate film increases by 1.1 times and 12 times after the chitosan is added.
Study on the Investment Model for the Higher Colleges Environment Protection
Authors: Ma Jun Qiang , Ji Yao Wu
Published: October 2012

Environment protection is one of the core tasks of the higher colleges. Under the condition of the unchanged capital investment, how to make the capital efficiency of the environment protection maximized still has no mathematical models for references at the present time. In this article, by using the views of the system theory and the related methods of mathematics and statistics and combing the empirical data of the higher college construction
Precise Comprehension on the Influences of "Nature-Human Integration" Concept to Artistic Designing
Authors: Zhu Rui Bo , Cui Meng , Yu Jin Jun
Published: October 2012

The "Nature-human Integration" concept is the important part composed in China’s traditional culture, also is the simple world outlook and methodology. It has taken the huge and profound influence to the formation of Chinese civilization, and is the source to generate ideas for artistic designing. From the historical background of the " Nature-human Integration " concept, this paper expounds based on its artistic representations in nature, emotion, tolerance and view, and deeply elaborates on its instructive significance and positive effects in the development of modern artistic designing, pointing out that the essence of the "Nature-human Integration" concept is the lasting care to human and it stresses human must be harmonious with the natural environments: all things can be perpetuate only by endless circulation; accommodating and absorbing diverse cultures can bring permanent prosperity and luxuriance.
Study on the Economic Feasibility of Recycled Concrete
Authors: Ma Jing
Published: October 2012

By combining the current situation that China is seriously in shortage of the resources and has a very severe environmental pollution problem, the author carries out a study on the economic value of the recycled concrete, and then makes a qualitative and quantitative analysis on the economic feasibility of the recycled concrete. The analysis shows that the recycled concrete can save the aggregate resources and also can prevent the environmental pollution which is caused by the stacks of the waste concrete, and is a kind of green concrete featuring the sustainable development. Also, it is found that the economic feasibility of the recycled concrete can be embodied in the resource price, the urban garbage processing fees, and the governmental finance and taxation supports, etc. Therefore, it has been known that the production of the recycled aggregate is profitable and also is with a huge ecological benefit as well as a certain economic benefit.
Characteristics during Start-Up of Internal Circulation Reactor
Authors: Liu Qiong , Wang Jing
Published: October 2012

Lactic wastewater is a refractory high-concentration organic wastewater,and its treatment efficiency with traditional anaerobic processes is not high.The internal circulation(IC) reactor was used to treat this wastewater.It was successfully started up by taking measures including inoculating granular sludge,controlling the influent concentration,flow rate,VFA and temperature. The operation results show that IC reactor has high treatment efficiency and stable operation in treatment of lactic wastewater, and the removal rate of COD can reach 80%, thus reducing the treatment loads of subsequent aerobic processes, and ensuring that the effluent from the whole wastewater treatment system reaches second level criteria specified in the Integrated Wastewater Discharge Standard (GB8978-1996).The biogas produced in the IC reactor can be used for heating the raw wastewater.
The Construction Method and Plant Configuration of New-Style Ecological Floating Island
Authors: Cai Lu Xiang
Published: October 2012

This paper describes the basic characteristics of the ecological floating island, the improvement and innovation in the construction method of the new eco-floating island and the basic basis of the configuration and choice of plants, as well as outlooks the development trend of the island. It has some inspiration on the design and application of new eco-floating island.
The Analysis of Economic and Environmental Feedback System and Proposed Management Policies in Jiuzhaigou
Authors: Chen Qi Sheng , Ge Peng , Ren Pei Yu
Published: October 2012

Jiuzhaigou scenic spot (Jiuzhaigou) is an ecological and economic system. The constraints and feedbacks between the economic subsystem and environmental subsystem are very important to the sustainable development. To study this system, the paper creates the system dynamics model about the constraints and feedbacks between economic subsystem and environmental subsystem. The model is made of one growth positive feedback loop of tourism development and two confine positive feedback loops of space constraint and pollution constraint. Then the paper brings up sustainable development management policies in Jiuzhaigou.
Application of Projection Pursuit Dynamic Cluster Model in Eco-Environmental Quality Assessment
Authors: Zhang Xin Li
Published: October 2012

Based on projection pursuit principle, a projection pursuit dynamic cluster (PPDC) model is developed, which is used in eco-environmental quality assessment for the first time in this paper. A new projection index is constructed based on dynamic cluster in the PPDC model. There is no parameter calibration in the PPDC model, which may lead to do an objective assessment. A case study of eco-environmental quality assessment of China is given at last. The results show the PPDC model is reasonable and easy to operate in practice, which is a new method for eco-environmental quality assessment.
The Analysis of General Entropy in Harmonious Management for Nature Tourism and Eco-Environmental Protection
Authors: Jiang Xiang Yang
Published: October 2012

Reserve system is a far from equilibrium nonlinear complex systems, and paradigms that make use of linear scientific is difficult to grasp its essence. Based on the basic characteristics of nature reserve systems, utilize ultra-entropy production model, revealing the reserve system evolution, provide a scientific basis to the natural reserve tourism development and the harmony management of the ecological and environmental protection.
The Influence of Thermal Treatment Temperature on the Structure and Performance of Monocarboxyphenyl Cobalt Porphyrin Loaded on Carbon Carrier as an Electrocatalyst for Oxygen Reduction
Authors: Fa Huan Bao , Zhang Li Ping , Yin Wei , Zhou Jing Ting , Xu Nan Nan , Yao Hao Yu , Zhu Lin
Published: October 2012

The monocarboxyphenyl cobalt porphyrin (CoMCPP) was synthesized and incorporated into carbon carrier acetylene black (ACET) for proton exchange membrane fuel cell cathode oxygen reduction. The influence of different thermal treatment temperature on the catalytic performance of the composite catalysts was discussed. The synthetic compound catalyst was analyzed by XRD、IR. The electrochemical catalytic performance of catalyst, which was heat-treated under different temperature, for oxygen reduction was tested by linear sweep voltammetry (LSV). The result shows that the best thermal treatment temperature is 6000C, and its catalytic activity also shows the best, the catalytic activity site changes from CoN4 to C-N-Co.
The Evaluation and Application Study of Remote Sensing Data Quality of Environment and Disaster Monitoring
Authors: Ren Ping , Zhou Jie Ming
Published: October 2012

The existing Fengyun (FY) satellites, resource satellites and ocean satellites all can observe the earth muti-funtionally and work well in monitoring environment and disasters. However, all these satellites are insufficient for space resolution, time resolution, spectral resolution and all-weather requirements when facing complicated environmental problems and natural disasters. This paper evaluates the multi-spectral remote sensing data quality of the Environment and Disasters Monitoring Micro-satellite Constellation (HJ-1A/B)A/B satellite and extracts data characteristics to offer references for promotion and application this data.
Research on Generation and Prevention of Rural Land Turnover Risks - We Take Chongqing, China for Example
Authors: Qiu Jia Hong
Published: October 2012

The rural land turnover has begun since the late of 1980s with the large number of migrant workers go for works in cities. At the beginning, the rural land turnover is just the disorder turnover, but now it has became organized. The rural land turnover in Chongqing plays so much important role in the development of Chongqing such as promoting agriculture construction adjustment and intensive land usage, increasing farmers’ income, balancing cities and urban areas development. But there are also many risks in the period of the rural land turnover. So we must pay much attention to it and analyze it to ensure the rural land turnover processed orderly so as to protect farmers’ rights and interests and achieve the social stability.
A Brief Analysis of Competition Environment of Air Freight Market at Kunming Airport
Authors: Xia Yuan Chun
Published: October 2012

Taking the opportunity of bridgehead strategy of Chinese central government, Kunming began constructing new airport, the fourth hub airport open to ASEAN and the Eurasia continents. The new international airport is expected to come into service at the beginning of 2012. The successful construction of an airport with modern equipment, however, does not indicate a successful operation. Among questions related to this general issue, a full understanding of the competition environment at Kunming new airport is one of the significant cases for the development of air freight. This paper firstly introduces Porter Five Force model in order to reveal how the competition environment demonstrates at Kunming airport. Then statistics of air throughput in recent three years is shown to certify the conclusion from Porter Five Force model analysis and thereafter follow reasons for the status. Suggestions are posed for how to face up these competitions at the end of this paper.
Carbon Storage Capacity of some Important Vegetation in Urban Residential Area
Authors: Shi Wei Lin , Cheng Si Xian , Zhong Yu Ming
Published: October 2012

The present work focused on developing a rapid estimation of carbon storage of single tree in urban community greening that is an important carbon storage field. The carbon storage is determined by the total biomass measured by getting carbon content percentage and density values of plants. Having surveying and calculating carbon content percentage, volume density and carbon storage of four main kinds of trees in eight residential areas, the value of computing carbon content percentage, volume density are 0.5 and 0.5×103kg/m3, respectively, agreeing with their default value 0.5. The developed carbon storage formula is applicable to computing single arbor green vegetation of cities. The carbon storage biomass of Cinnamomum camphora is the largest among the four kinds of main trees (Cinnamomum camphora (L.) Presl.), acacia (Albizia julibrissin), magnolia (Magnolia Grandiflora Linn.), laurel (Osmanthus fragrans. The results show that the calculation method is applicable and can be expanded for extensive use.
Chemical Pollution and Health of Coloring Food
Authors: Tian Yun Kui , Jin Xiao Xue , Song Li Li
Published: October 2012

Food coloring pollution is most widely occurred in food safety affairs in our country. The abused food additives and illegal ingredients belong to industrial dyes or chemical bleaching agents, which have chemical pollutions to the food and affect health. This paper introduces the compositions, structures, and industrial use of these illegal ingredients and the possibly illegal ingredient-added kinds of food as well as the harms done to body health.
Analysis and Application of Oxalic Acid Modified Sodium Silicate Binder
Authors: Wang Li Ge , Zhang Fan , Zhang Yang , Zhou Long , Wang En Ze
Published: October 2012

A new type of pellet binder was prepared with oxalic acid as sodium silicate chemical modification agent in this paper, the compressive strength of which improved obviously. It improved from 0.6 KN/a to 2.4 KN/a, when the amount of oxalic acid is 8%. Meanwhile, carboxyl introduced at 390°C started carbonization decomposition, and pelletizing properties wouldn't be affected without new pellet impurity. The analysis shows that adding oxalic acid introduces carboxyl only in the binder, but doesn't generate new functional groups; Polymer layer formed by carboxyl adsorption on sodium silicate gel particle surface limits colloidal particle growing up, and plays roles of refining colloidal particle and improving the bonding strength.
Ecological Security Research of Shanghai Hangzhou Bay North Shore under the Impact of Tourism Activities
Authors: Liu Shi Dong , Wang Rui Jing , Gao Jun
Published: October 2012

The ecological security of coastal area has been a focus in the research of coastal wetlands ecosystem. However, with the development of China’s coastal tourism, the research of coastal wetlands ecological security under the impact of tourism activities seems not updated enough. Therefore, this paper selected Fengxian and Jinshan District on Shanghai Hangzhou Bay North Shore, and made tourism activities the major driving factor for ecological security of tourism environment in coastal area, thus establishing an ecological security evaluation system of costal tourism environment, based on DPSIR Model. The result showed that tourism development would enhance the ecological security level of regional tourism environment, and tourism activities would exert positive impact on regional tourism environment. The conclusions include: (1) Before 2003, the tourism environment of Fengxian District was in an insecure state, but with tourism development, in 2007, its ecological security level was largely elevated; (2) The tourism ecological security of Jinshan District was higher than that of Fengxian District, but due to industrial development and tourism downturn, ecological security witnessed a trough in 2003.
The Assessment of Island-Type Urban Ecosystem Based on the Environmental Carrying Capacity Model - A Case Study of Shanghai's ChongMing Island
Authors: Liu Shi Dong , Xue Dong Qian , Gao Jun
Published: October 2012

The island-type urban ecosystem is facing enormous pressures due to its special geographical location and spatial integrity. This paper uses Shanghai's ChongMing Island as an area of study and selects the Yangtze River tunnel-bridge, and the Shanghai World EXPO as driving factors for the urban ecosystem. This will be based on the time-spatial urban ecosystem carrying capacity assessment model in order to study the impact of human activities on the island-type environment. The paper will subsequently identify the limiting factors of the ChongMing urban ecosystem. The results show that the water ecosystem in ChongMing is presently in good condition. From 2004 to 2011, the traffic carrying capacity has apparently been alleviated. Much of the traffic onto the island has changed from ferry boat traffic to tunnel-bridge transportation. The tunnel-bridge carrying capacity has been gradually decompressed after the Shanghai World EXPO, and has basically met the needs of the people. Despite this, the influx of tourists in 2010 made urban environmental problems more prevalent, especially the treatment of solid waste, which is now the biggest obstacle to natural environmental protection on ChongMing Island.
Empirical Analysis on Public Environment Management
Authors: Li Yuan Yuan
Published: October 2012

Using China health and Nutrition Survey (2006) data and probit regression model, this paper examines how public living environment affect health, it also examines urban-rural differences and regional differences in China. Through analysis, it finds that living environment is a key health impact in China, and drinking water and toilet situation in rural and western China are closed related to health. The evidence will provide reliable information for health policy formulating.
Thorium Nuclide Extraction and Quantitative Measurements in Minerals
Authors: Liu Jin Sheng
Published: October 2012

The extraction characteristics of Thorium nuclide play a decisive role in Thorium migration in groundwater and soil. This paper takes a set of Thorium extraction experiments for some tailings dam according to the Thorium content in tailings. These experiments are to achieve the lixiviation characters of Thorium under different conditions so as to ensure the accuracy of Thorium migration in groundwater and soil parameters set. Experiments results denote that neutral conditions make the Thorium migration weak while acidic conditions enhance the speed of migration in groundwater and soil. Therefore, acidic wastewater should not directly discharge into the tailings, or migration of thorium will be greatly enhanced.
Analysis on Environmental Management and Performance of POSCO
Authors: Gu Hai Fang , Niu Lin Xia
Published: October 2012

POSCO is the world's third-largest steelmaker which had an output of 35.4 million tones of crude steel in 2010. It currently operates two integrated steel mills in South Korea and operates a joint venture with U.S. Steel in California. As POSCO’s business expanded to overseas markets, the environmental management at the POSCO family level grows more important. Its current environmental management system incorporates environmental vision, policy, organizations and accounting system. In order to fulfill corporate responsibilities for the society and environment, POSCO establishes environmental objectives each year and put them into practice. In this paper, the POSCO environmental management methods and environment management performance were summarized. The treatment methods and recycling techniques of different metallurgical waste and resources (such as wastewater, dust, slag and sludge) were reviewed in details. At last, the author put forward some expectations for the environmental development and management of the Chinese iron and steel companies.
Theories Study of Modelling Tourism Impacts on Coastal Environment
Authors: Sun Rui Hong , Gao Jun
Published: October 2012

The theories used in these articles include life cycle theory, Budowski’s “conflict-coexistence-conflict” theory, ecosystem and ecosystem modelling theory, sustainable development theory, etc. The aim of this paper was to examine this prior research, and to find the theories and disciplines used to explain the relationship and point out Network science and complex adaptive system open new paths to analyze the relationships between tourism types and their environmental impacts in coastal areas, and help tourism research transition towards a less undisciplined array of theories and models.
The Application of RS in Protecting Environment
Authors: Xiao Xiao , Zhou Zi Kang
Published: October 2012

The environment problem is becoming increasingly significant in the world. Besides, the technology of RS has been widely used in the field of regional environment monitoring and the global study of environmental problems. This paper mainly introduce the RS’s application in air pollution monitoring, water environment monitoring, ecological environmental monitoring, and the natural disasters monitoring and so on.
Adsorption Research of Tetracycline from Water by HCl-Modified Zeolite
Authors: Zou Yan Li , Huang Hong , Chu Ming , Lin Jian Wei , Yin Da Qiang , Li Ya Nan
Published: October 2012

The sorption performance of tetracycline (TC) on HCl-modified zeolite under different conditions was investigated. HCl-modified zeolite exhibited more than two times higher adsorption capacity than natural one. Adsorption kinetics and adsorption equilibrium isotherms were studied by conducting series of batch experiments. The kinetic analysis indicated that the pseudo-second-order kinetic model was well described the sorption equilibrium process of tetracycline onto natural and HCl-modified zeolites, and intra-particle diffusion was not the only rate-limiting in the sorption process. The results from sorption equilibrium studies showed that the Langmuir and Dubinin-Radushkevich (D-R) isotherm models were well fitted to experimental data, the value of E confirmed that the adsorption was controlled by physical combined with chemical adsorption mechanism. The sorption removal capacity is relatively higher at low pH. The adsorption removal rate of wastewater containing 0.1 mmol/L tetracycline was 95.5% when the dosage of treated zeolite was 0.05g.