bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of Corporate Governance on Environmental Information Disclosure-Evidence from China
Authors: Peng Ke , Xu Tong Tong , Ning Guo Fang
Published: October 2013

This study examined the impact of corporate governance on environmental information disclosure in the China context. Our data was based on Shanghai A-share companies for the period 2008 to 2011. We examined the effect of corporate governance from different aspects. We found that Outstanding shares rate, State-holding ratio, and CEO/Chairman duality negatively affect environmental disclosure index (EDI) significantly; Proportion of independent directors, supervisory board and board sizes positively affect EDI significantly. Our results indicate that in China, corporate governance does influence the extent of environmental information disclosure significantly.
Integration of Carbon Geological Storage and Geothermal Energy Development in Low-Permeability Reservoirs
Authors: Yan Shi , Wang Fu Gang , Yang Yan Lin , Feng Gua Hong
Published: October 2013

Carbon dioxide (CO2) has recently been considered as an alternative geothermal working fluid because of some favourable fluid dynamics and heat transfer properties compared to water. The concept, however, was initially proposed in the context of engineered geothermal systems (EGS). EGS has encountered considerable unfavourable conditions and socio-political issues. Consequently, use of the CO2sequestration site to recovery geothermal energy may be practical, so called CO2-plume geothermal (CPG) system. We have performed numerical simulations to study non-isothermal multiphase flow processes of CO2displacing water and behaviour of a CPG system in a low-permeability reservoir. A number of numerical simulations under various geological and pressure/temperature conditions are performed. The objective of this research is to (1) investigate the heat extraction efficiency using supercritical CO2in comparison with water, (2) evaluate favourable and unfavourable conditions for heat extraction.
Study on the Application Results of "Dry Cleaning" Mode in Port Dust Control
Authors: Shang Jin Rui
Published: October 2013

The article mainly proposed and introduced a new model in port dust control — Dry Cleaning Mode.In Lanshan Port, for example, based on Dry Cleaning Mode connotation, the basic structure of the model were described from the technical and managerial aspects, and its operation mechanism was explained. Practice has proved that the application effect of Dry Cleaning Mode is very significant in port dust control.
Effects of Cr3+ on COD Changes of SBR Activated Sludge System with Different Chromium Loads and Different Initial SVIs
Authors: Dong Guo Ri , Liu Jian She
Published: October 2013

Aiming at the toxic effect of Cr3+ on the activated sludge in sequencing batch reactor (SBR) process system, the article researched the toxic effect of Cr3+ on activated sludge and sewage processing in SBR process system through detecting the COD changes of SBR activated sludge with different chromium loads and different initial SVIs. The results show that when chromium load level is lower than 12.5mgCr3+/g mlvss, Cr3+ can promote activated sludge to adsorb organic substance COD. The effect is affected by the initial SVI which exerts impact on the toxic effect of chromium load on activated sludge within the tolerance range. When it is within the non-tolerance range, the final effluent COD of the system increase apparently. In the process, COD change curve is rather gentle; and the time of arriving at a rather low COD is relatively delayed. The system tolerance of chrome toxicity with a low initial SVI is comparatively strong.
Thoughts on the Protection of Ecological Environment of Tourism
Authors: Gu Ming Chong , Liu Hong
Published: October 2013

In recent years, tourism has developed rapidly in our countryhe partys eighteenth congress pay more attention to the environmental pollution problems and the "Twelfth Five-Year Plan" put environmental governance as an important goal, the protection of tourism ecological environment has been more and more attention. China's tourism ecological protection is still in its infancy, this paper uses qualitative analysis method; analyze the domestic tourism development at facing ecological environment problems, and put forward tourism environment protection countermeasures for corresponding problems.
Research on the Low-Carbon Evolutionary Model of Chinese Traditional Industrial Clusters Based on Evolutionary Games Theory under Low-Carbon Constraints
Authors: Fan Ru Guo , Zhang Hong Juan
Published: October 2013

The low-carbon evolution of traditional industry cluster is the key to a low-carbon economy, and also a frontier of industry cluster theory research. The paper uses evolutionary game theory to construct a low-carbon evolutionary model of Chinese traditional industrial clusters, which considers uncertain factors such as political, economic, cultural, etc. Through the analysis of the cluster low-carbon evolutionary paths and stable equilibrium strategies, the model reflects the inherent law of clusters low-carbon evolution. Finally, the paper gives advices to promote industrial cluster agents to adopt the low-carbon cooperation strategy.
Study on Cognition, Attitude and Behavioral Path of Energy Saving and Carbon Reduction: Using University Students in Taiwan as Examples
Authors: Lin Wen Chin , Chen Tsair Rong
Published: October 2013

By questionnaire survey, this study probes into university studentscurrent cognition and attitude toward energy saving and carbon reduction and conducts path analysis. The research tool is self-designed questionnaire on cognition and attitude toward energy saving and carbon reduction. First, 9 experts and scholars are invited to test content validity of questionnaires and conduct questionnaire pretest. The researcher revises the questionnaire, practices questionnaire survey, analyzes data and selects 685 university students by stratified cluster sampling. There are 617 valid questionnaires. Data obtained are analyzed by descriptive statistics, independent sample t test, One-way ANOVA and structural equation model.
Relationships between Carbon Emissions and Economic Growth, Foreign Direct Investment and Export in China
Authors: Wang Di , Sun Guo Zhong
Published: October 2013

China's CO2 emissions from 1990 to 2010 were calculated as well as two economical models were established, and the relationship between carbon dioxide emissions, economic growth, foreign direct investment (FDI) and export trade was analyzed. The result shows that the relations between China's carbon emissions and GDP showing the "N" type. Economic growth and export trade had significantly promoted China's carbon emissions, while the relations between FDI and China's carbon emissions are not significant. During the past years, exports have played an important role in promoting china's economic development. However, the main exporting industries are energy and emission intensive, which reveals disadvantage for carbon reduction. To reverse the negative impact of the export to china's carbon dioxide emissions, export structure should be optimized, and the outdated technology, equipment and products should be eliminated, while energy-conservative and environmental friendly industries should be promoted.
Research on Context about Ecological Environment and Green Concept of Advertisement Design
Authors: Li Peng
Published: October 2013

This article aims to analyze cases about pollution of ecological environment and global warming in that designers must take full account of the relationship between human and natural environment. Green design means creating products with arts beauty through men’s artistic design, which would not result in waste of resources and break the ecological balance.
Decision-Making and Control System of Diesel Particulate Filter Regeneration
Authors: Fu Jun , Chen Wei , Tang Yuan
Published: October 2013

The decision-making and control system of a burner-type diesel particulate filter (DPF) regeneration was designed. Through the online simulation and the application research, it showed that the regeneration system had good response performances on prediction, decision-making, support and control. The DPF regeneration could be rapidly completed in 5-10 minutes and the regeneration efficiency be more than 87%, and the peak temperature and its maximum average grads were in the safe range. The system can realize the efficient, reliable and safe regeneration.
A Decomposition Algorithm for Byproduct Gases Scheduling in Iron and Steel Enterprises
Authors: Shi Can Tao , Liu Zi Sheng , Liu Yu Zhuo , Zhou Yong Liang
Published: October 2013

Concentrating on byproduct gas system with multiple pipeline networks, this paper established a mathematical model for byproduct gas scheduling (BGS) problem in iron and steel enterprises with consideration of supply priorities of consumption units. A decomposition algorithm is employed to transform the original model into an integer programming and a linear programming. The genetic algorithm is introduced as the solution mainframe to solve the integer programming problem and the linear programming problem iteratively. The result of practical-data-based experiment indicates that the proposed model and algorithm are feasible and effective.
The Discussion on Synthesis Process of Biurea by Hydrochloric Acid
Authors: Qi Meng Meng , Guo Ran , Su Meng , Cheng Xiao Xue , Zhang Ling
Published: October 2013

By Series of comparative experiments, Factors of influencing the yield of biurea which is prepared from the condensation reaction between hydrazine hydrate and urea are studied, such as pH value, ratio of urea to hydrazine hydrate, temperature of reaction solution, reaction time and acid addition order. Under the optimum process conditions, the yield of biurea can reach over 97%, the biurea produced by hydrochloric acid method avoids large amounts of complex salt wastewater in condensation reaction of sulfuric acid method, and make the production process of biurea tends to be more environmentally friendly.
Study on the Effect of the Use of FGD Gypsum into the Alkalization Soil to Improve Soil Property
Authors: Li Yu Bo , Xu Qing Tao
Published: October 2013

Through this pot experiment of corns, the paper studied the effect of the use of FGD gypsum into the alkalization soil to improve corn output and soil property in the alkalization soil of the west of Jilin Province. The study indicated that FGD gypsum reduced effectively the PH value of the alkalization soil and improved the corn output. When the amount of FGD gypsum was 3t/667m2, the growth index of planting corn, such as the plant height, root length, plant fresh weight, was the best. But when the amount of FGD gypsum was 2t/667m2, the difference was not obvious. The results indicated that considering the factors of soil PH value and salt-resistance, when the amount of FGD gypsum was 2t/667m2, the effect of the use of FGD gypsum of the alkalization soil in the west of Jilin Province to improve soil property was the best.
Dust Control in Brick and Tile Production Enterprises
Authors: Zhao Jing Bo , Hao Li Bo
Published: October 2013

Analysis of the causes of dust brick and tile production enterprises, from the impact on human health, the factory machinery and equipment wear, impact on environment protection, expounds the harmfulness of dust, and discusses the type, structure and function of the filter, as well as the precipitator combined use method and way to control dust.
Experiment on the Adsorption Potential of Modified Corncobs for Nitrite Removal from Seawater
Authors: Wang Chao Jin , Li Tai Hang , Xie Jing , Mei Wen Fang , Wang Xing Quan , Wang Jin Xin
Published: October 2013

Efficient nitrite adsorbent materials made from corncobs through physical and chemical modification were used to adsorb nutrite in seawater. In this experiment, the effect of time and modification on corncobs adsorption capacity was studied. It shows that the removal ratio for nutrite presented an increasing tendency over time and reached the highest after 270 minutes, the removal ratio of modified corncobs reached 52.1%, which improved 10% compared with unmodified corncobs. Besides, through contrastive experiment with some other nitrite adsorbent materials, modified corncobs are proved to have the highest removal ratio for nutrite.
Experimental Study on the Rapid Start-Up of Two-Phase Anaerobic Reactor Treating Domestic Sewage
Authors: Chen Zhi Li , Ren Zhen Jie , Yao Yang , Yang Yi , Zhang Wan Tu
Published: October 2013

An integrated two-phase anaerobic reactor was designed to treat domestic sewage, and the corresponding start-up process was investigated.In this investigation, the volumetric loading rate ( VLR) of the system was raised by basically maintaining the influent COD ( Chemical Oxygen Demand) concentration and gradually decreasing the hydraulic retention time (HRT) at 35°C，and the start-up process was completed only in the 36 days. When the Influent pH was kept in the range of 7.39 ~ 7.67，the acidogenic phase and the methanogenic phaseof integrated two-phase anaerobic reactor were separated only by using the kinetic method. After completing this process, the reactor operated well with VLR at 1.31 kg / ( m3·d) and HRT at about 7h, and a COD removal of more than 80%,a SS removal of about 90% and a gas production rate of about 0.31L/h were respectively achieved.
Estimation of Emissions for Civil Jet Conceptual Design
Authors: Wang Yu , Zhang Shuai , Yu Xiong Qing
Published: October 2013

Parts of emission from the aircraft engine are doing harm to the environment. The greenhouse gas emission (CO2 equivalent) per passenger per thousand kilometers is used to measure the emissions in this work. And a new estimation method of emissions for aircraft conceptual design was proposed, based on the ICAO aircraft engine emissions databank and the response surface fitting methods. Because the amounts of greenhouse effects of various pollutant gases rely on altitudes, the estimation accuracy of emission was improved by refining the flight dynamics models in various stages of mission profile. The impacts of the wing configuration on greenhouse effect were discussed, after verifying the accuracy of this proposed method. The results indicate that the greenhouse gas emissions could be reduced by appropriately increasing wing sweep and aspect ratio.
Study on the Degradation of Chlorpyrifos by Immobilized Bacillus
Authors: Wang Xin , Lu Jia Liang , Liu Li , Bao Jia , Liang Jiyan , Cui Li
Published: October 2013

Pesticide pollutions have become increasingly severe. Especially the extensive production and application of chlorpyrifos have resulted in the environmental pollution and ecological damage. The employment of the immobilized microorganism degradation of chlorpyrifos in soil is a kind of effective technology without secondary pollution. The best ratio of immobilized carrier has been determined by comparison among different carriers for chlorpyrifos degradation. Based upon the adoption of Bacillus LLBD4, pH value, temperature and initial concentration of chlorpyrifos were studied in this experiment. The results showed that the combination of 10% of PVC, 1% of activated carbon and 0.5% sodium alginate can be served as the best carrier, furthermore, chlorpyrifos degradation efficiency reached the peak when the pH was set to 7.0, the initial concentration of chlorpyrifos was 100 mg·L-1at 30°C, reaching about 83%.
Research on Micro-Electrolysis Method to Treat the Chrome-Containing Steel Wastewater
Authors: Zhang Yi Ting , Lun Hai Bo
Published: October 2013

Iron-carbon micro-electrolysis was applied in the treatment of the steel wastewater containing chromium,The effects of initial pH, stirring speed, Fe /C (quality), reaction time were investigated by single factor experiments. According to the results of the static experiments, the dynamic test is carried out in a fixed bed reactor composed of iron and carbon,the experimental results show that when the flow rate of less than 40ml/min, the system can be continuously stable operation 6h.
Electronic Computer Circuit Board Waste Leaching Toxicity Study
Authors: Shao Xian Tao , Lv Wei , Li Deng Xin
Published: October 2013

Select the e-waste in the PC board as the research object, and through microwave-assisted digestion and flip Preparation leaching solution, respectively, using inductively coupled plasma atomic emission spectrometry (ICP-AES) and gas chromatography - mass spectrometry (GC-MS) analysis of the circuit board test results with HJ/T299 set forth in the various elements and organic matter concentration limits comparison shows that a computer circuit board has a leaching toxicity, is hazardous waste for the computer circuit boards harmless and resource provide a reliable theoretical basis.
Study on Wastewater Pollutant Removal Efficiencies of Artificial Aquatic Plants with Different Lengths
Authors: Dong Wen Guo , Chen Qing Feng , Miao Ming Sheng , Yang Hong Yan
Published: October 2013

Five different lengths artificial aquatic plants were used to purify wastewater. The artificial aquatic strings of 10cm diameter cylinder were divided into five groups, such as 0cm (A, CK), 50cm (B),100cm (C),150cm (D) and 200cm (E), respectively. The experimental results showed that the best removal efficiency was 78.3% and 73.5% for COD and ammonina nitrogen in the C group, and for the total phosphorus (TP), the best removal efficiency was 61.3% in the B group. Therefore, it is suggested that the best length is 100cm at 22°C to 26°C in the water according to the comprehensive removal efficiency.
Effect of Auxin on Weedy Rice Mesocotyl Cell Wall Oxidase
Authors: Li Li , Liang Qian , Wang Che , Chen Wen Fu
Published: October 2013

The seedling was developed on the dark condition by artificial climate chamber to determine the content of Auxin (IAA), activity of indoleacetic acid oxidase (IAO) and cell wall peroxidase (POD), mesocotyl length change and cell wall oxidase activity variation applied IAA. The study proves that endogenous hormone IAA content of long mesocotyl in weedy rice were much higher than that of short mesocotyl in Akimitsu. With the growth of mesocotyl elongation, endogenous IAA content showed cumulative effects. And then accumulation of IAA content reached up to maximum, when the Mesocotyl elongation stoped to grow. IAA might play a decisive role in the process of hypocotyl elongation. Reduction in the activity of IAO and POD accelerated the transformation from bound IAA to free IAA and promoted cell elongation and mesocotyl elongation.
Physiological Response of Pleioblastus fortunei to Mercury Stress and Alleviatory Effects of Exogenous Silicon
Authors: Xie Yin Feng , Gao Yu , Tang Yu Xiang , Zhang Shan Shan
Published: October 2013

A pot experiment was conducted to explore the physiological toxicity of mercury (Hg) and alleviatory effects of exogenous silicon (Si) onPleioblastus fortuneiby the determination of leaf membrane permeability, chlorophyll and soluble protein content, SOD and POD activity, root vigor, net photosynthetic rate. The results indicated that 20 mg/kg Hg2+treatment for 100 days caused no obvious physiological effect onPleioblastus fortuneiexcept for root vigor. As the concentration of Hg2+increased from 20 mg/kg to 500 mg/kg, the degree of physiological injury increased, and 500 mg/kg Hg2+exhibited significant physiological toxicity toPleioblastus fortunei. Application of 300 mg/kg Si had no apparent regulatory effect on physiological response ofSasa fortuneiin the presence of 20 mg/kg Hg2+, but significantly alleviated the toxicity of 500 mg/kg Hg2+. Si could prohibite the descent of SOD activity and the increase of POD activity caused by high concentration of Hg2+, thus maintain the metabolism balance of active oxygen.Pleioblastus fortuneican be considered as phytoremediation plant and Si to improve resistance of bamboos cultivated in Hg polluted area.
Removal of Water-Soluble Manganese Ions from Electrolytic Manganese Residues by Hydrometallurgical Process
Authors: Zhou Xue Jiao , Xia Wen Tang , Yin Jian Guo , Gao Yi Feng , Yang Wen Qiang , An Juan
Published: October 2013

Electrolytic manganese residues containing a substantial amount of manganese are a potential pollution. Removing water-soluble manganese ions from electrolytic manganese residues by hydrometallurgical process was discussed. In the work, the basic property of the electrolytic manganese residues was analyzed. Based on it, we proposed the suitable method to remove Mn2+ from the slag by pollution-free oxidation in alkaline solution. The results shown that the best conditions to remove Mn2+ were pH 10.5, temperature 55 °C, the flow rate of hydrogen peroxide 0.50 mL·L-1·min-1 and agitation speed 250 r/min. At the optimum condition, the removal ratio of water-soluble Mn2+ exceeded 99.9% and the concentration of Mn2+ in the final solutions was about 3 mg/L.
Study on Recycling Utilization of Waste Concrete
Authors: Wang Yu Lan
Published: October 2013

In the process of urban development, with the reconstruction of old city, a lot of waste concrete will be generated. At the same time, civil engineering construction, earthquakes and wars also can generate a large number of waste concrete. The existence of waste concrete will directly pollute environment and occupy the land resources. The recycling utilization of waste concrete is benefit to environmental protection and saving resources, and is also benefit to realize the sustainable development of building materials. Waste concrete research situations in China and abroad were introduced. The crushing and regeneration technology of waste concrete were studied. The material properties of recycled concrete were analyzed and some advices about development of recycled concrete in China were presented.
Influences of Different Inoculation Methods on Fluorescence Characteristics of DOM in Solid Waste Composting
Authors: Yao Bo , Hu Chun Ming , Liu Qing Quan , Xi Bei Dou
Published: October 2013

In order to determine better inoculation methods of compound microorganisms in solid waste composting, biochemical parameters and dissolved organic matter (DOM) during the process of composting with five different inoculation methods were tested and analyzed. The results show that temperature, pH value, and synchronous fluorescence spectra of DOM in the composting piles of the five deals exhibits a certain trend with composting time increasing, in which macromolecules with complex structures and humic substances gradually increase. Overall, the temperature increases first and then decreases, and pH value is nearly stable at slightly alkaline range by the end of composting. Complex macromolecules and humic substances increase, and DOM properties tend to stabilize. Meanwhile, humification index (IA/IC, %PLF, and %HLF) of the five deals of compost also experienced significant changes. With the decrease of protein-like substances, the content of humus correspondingly increase, i.e. with composting time increasing, low-molecular-weight organic matter in the compost gradually transforms into stable high-molecular-weight humic substances, which suggests increasing aromaticity and distinctive complexity of DOM. From a comprehensive comparison of the relevant parameters and indicators, the deal of inoculating compound microorganisms at the start time or after the high-temperature phase could notably speed up the humification process in solid waste composting.
Biosorption of Arsenic (III) from Aqueous Solutions by Industrial Fermentation Waste Aspergillus niger
Authors: Xue Wei Na , Peng Yan Bo
Published: October 2013

Biosorption of As3+ ions by industrial fermentation waste Aspergillus niger free dry mycelium was investigated in a batch system..The influences of solution pH, biosorbent dose, As3+concentration, and contact time on As3+ were studied.The results indicatd that absorption capacity was strongly affected by the solution pH, the biosobent dose and initial As3+concentration.Optimum biosorption was observed to be 75% at pH 5.0,biosorbent dose 20g/L, initial As3+concentration 800ug/L. Adsorption equilibrium was established in 100 min. Biosorption equilibrium data were best described by Langmuir isotherm model.
Preparation and Flocculating Performance of P (AM-DAC-AANa) Copolymer
Authors: Zhang Yu , Fu Min Min , Liu Fu Sheng , Yu Shi Tao
Published: October 2013

Amphoteric ionic polyacrylamide P (AM-DAC-AANa) was prepared in aqueous solution using acrylamide (AM), 2-(acryloyloxy) ethyltrimethylammonium chloride (DAC) and sodium acrylate (AANa) as materials by photo assisted initiation. The influences of reaction conditions on intrinsic viscosity and solubility of product were studied. Under the conditions of initiation temperature 20°C, monomer concentration 32%, pH=6 and initiator concentration 0.010%, the intrinsic viscosity and dissolving time of polymer were 13.56dL/g and 66min respectively. Moreover, the flocculating performance of the obtained copolymer was also studied. The results showed that under the conditions of P(AM-DAC-AANa) dosage 0.0250%, intrinsic viscosity 12.13dL·g-1, ionic degree 25%, m (DAC):m (AANa)=1:2, the transmittance of the supernatant, flocculating rate and dewatering rate were 93.90%, 84.47% and 92.41% respectively.
Enhanced Dissipation of PAHs in Soils by Mixed Cropping
Authors: Pan Sheng Wang , Yang Li Juan , Cao Sheng Xian , Yuan Xin , He Mao Ping
Published: October 2013

The plant-promoted removal of polycyclic aromatic hydrocarbons (PAHs) in soils ranging from 20.08 to 322.12 mg·kg-1 was investigated under different planting patterns, and enhancement mechanisms were analyzed. Results showed that the dissipation of PAHs (68.22%~75.06%) in soils growing Brassica campestris and Trifolium repens significantly exceeded those (40.38%~43.26%) vegetating single species. After 80 days plantation, the extractable PAHs in soils under mixed cropping were much lower than those under single cropping. Despite the presence of vegetation evidently enhanced PAHs removal, the plant-microbial interactions are the main pathway for dissipation of pollutions under mixed cropping mode. These results suggested a feasibility of the establishment of multi-species phytoremediation for improvement of the remediation efficiencies of PAHs, which may decrease accumulations of PAHs in crops and thus reduce their risks.
Study on the Environmental Protection Management System at Ports in China
Authors: Liu Chang Bing , Lin Yu , Huang Wei
Published: October 2013

The environmental problems in China ports, the present situation and existing problems of environmental protection management system are summarized in this paper. Then the significance of the establishment of environmental protection management system and technical condition are discussed. At the end, the preliminary conception of the establishment and problems to be settled are proposed.
Study on Carbon Catalyst for Selective Catalytic Reduction of NOx at Low Temperature
Authors: Gou Xiang , Zhang Kai , Liu Lian Sheng , Liu Wen Yong , Wang Zi Fang , Yang Guang , Wu Jin Xiang , Wang En Yu
Published: October 2013

The method of selective catalytic reduction (SCR) is now one of the mature applications of NOx removal technology, which has the higher denitration rate, less secondary pollution and lower cost. However, the active temperature of traditional SCR catalyst is usually in the temperature range of 300-400°C. This kind of installation leads to the reduction of catalyst activity, and the shortage of working life. The development of efficient and stable performance of catalyst at low temperature has become a key point in the research of SCR.This paper reviews the research progress of carbon catalyst of low temperature SCR. In addition, the future research work is discussed.
Study on Properties and Inclusion of Environmental Automatic Steel Alloyed with Tin Element
Authors: Chen Shao Chun , Zhu Rong , Xue Li Qiu , Lin Teng Chang , Li Jing She
Published: October 2013

A new environment-friendly automatic steel alloyed with tin element Y20Sn has been developed. In test, new steel possess good machinability and mechanical property, which reach Chinese National Standard of corresponding automatic steel GB/T8731-88. In steel, the shape of inclusions is mainly spherical or spindly, which volume is small and distribution is evenly. Such style of inclusion can fairly improve the steel machinability, and doesnt impair its mechanical property at the same time. As the main inclusion in developed automatic steel, MnS inclusion is one important factor which influences the machinability of steel. In the steel alloyed with tin, tin exist around MnS inclusions or are attached to MnS inclusion will influence the formation mechanism of MnS inclusion, that is the important reason why tin element influence machinability of developed automatic steel Y20Sn.
Study on Molecular Sieve Catalyst for Selective Catalytic Reduction of Nox at Low Temperature
Authors: Gou Xiang , Zhang Kai , Liu Lian Sheng , Liu Wen Yong , Wang Zi Fang , Yang Guang , Wu Jin Xiang , Wang En Yu
Published: October 2013

Low temperature SCR method has caused concern for the scholars in recent years. This SCR unit can be installed downstream of the desulfurization and particulate control devices, which is conducive to match the existing boiler system. It can relief the poisoning and blocking of SO2 and dust, so as to extend the life of catalyst. This paper summarizes the research progress of molecular sieve catalyst of low temperature SCR.
Correlation Analysis between Primary Productivity Factors and Water Environment Factors
Authors: Chen Shih Chieh , Chung Chao Cheng , Lai Wen Liang , Chung Chung Yi , Gau Hwa Sheng , Liao Shao Wei
Published: October 2013

In this study, we use canonical correlation analysis to interpret the relationship between water quality parameters (T, Alk, Cl, EC, TN, TP, UV-254, pH, HPC, DO) and primary productivity parameters (algae and chlorophyll-a). In these two sets of constructed canonical variables, the water quality parameters can account for 39.25% of the total variance of primary productivity. The majority of the explanatory power is from the first set of canonical variables, which has a correlation coefficient of 0.84. The main factors that control chlorophyll-a are HPC, Alk, T, TN, and pH.
Diversity of Hypogeous Fungi in China
Authors: Li Lin , Zhao Yong Chang , Li Shu Hong , Su Hong Yan , Zhou De Qun
Published: October 2013

Over 163 hypogeous fungi species belonging to 45 genera, 25 families have been found and reported in China. The ecological environment and truffle wild resources are being destroyed rapidly due to over-excavation. Diversity, conservation and utilization of the Chinese hypogeous fungi are discussed in this paper with some suggestion for conservation and sustainable utilization.
Study on the Tolerance of Common Tree Species to Nitrogen Dioxide
Authors: Chung Chung Yi , Chung Pei Ling , Liao Shao Wei , Lai Wen Liang
Published: October 2013

The present study analyzed the tolerance of 10 common woody plants to gaseous nitrogen dioxide (NO2). Experimental trees species were placed in fumigation chambers and exposed to different concentrations of NO2 (600, 1000, and 2000 ppb) for 48 hours. Their physiological health was determined by measuring how chlorophyll fluorescence varied, identifying which tree species were more adaptive and resistant to NO2. The results showed that NO2-affected plants were harmed to some extent by reduced levels of chlorophyll fluorescence, which decreased more serous with higher concentrations of NO2. Among the experimental tree species, the tolerance to NO2 was ranked as Melia azedarach > Decussocarpus nagi > Palaquium formosanum > Pongamia pinnata > Messerschmidia argentea > Diospyros morrisiana > Lagerstroemia speciosa > Semecarpus gigantifolia > Aglaia formosana > Koelreuteria formosana.
Application of Inorganic Ceramic Membrane in Wastewater Treatment I: Process Research and Parameter Optimization
Authors: Li Guo Yi , Wang Xiao Hui , Wei Yan Jie
Published: October 2013

Inorganic ceramic membrane has been one of the hottest research field both in environmental protection and materials, as it has so much advantages, such as, high-temperature-resistance ,acid and alkali-resistance , adequate distribution of aperture , steady chemical property , high strength , large flux, long lifetime, anti-pollution, simple structure, small footprint, few corollary equipment, easy installation, no chemical additives, high separating efficiency, high degree of automation control and so on. Some application on environmental progress in the field of inorganic ceramic membrane technology applied in treatment of food industry wastewater, mechanical metallurgy wastewater and petrochemical wastewater was summarized in this paper, and the existent problems and the future research direction was discussed.
Finite Element Analysis of a Certain Heavy Vehicle Gear Box
Authors: Zhang Hong Zhuang , Zhang Xue Xi , Feng Su Li
Published: October 2013

This paper used solidworks software to build 3-D model of a certain Heavy Vehicle Part, then analyzed the model strain state under typical operation condition by ANSYS,
Shaking Table Test of Steel Frame Structure in Sine-Swept Vibration and its Virtual Realization
Authors: Liu Hong Biao , Zhang Qiang , Liu Xian Peng
Published: October 2013

The accurate sine-swept function is proposed by theoretic derivation. The natural frequencies of five-story steel frame structure in transverse direction were identified by modal test. Based on the numerical simulation results of steel frame structure excited by sine-swept vibration, it is proved that the difference of structural response between forward excitation and backward excitation is little,and both the results of them can be used to evaluate the dynamic property of structure. However, it is proper to decide whether the response results of structure should be modified or not based on the dynamic properties of table-board. The conclusions above can provide basis for design and dynamic time-domain analysis of shaking table test in sine-swept excitation.
Microbially Induced Carbonate Precipitation in Sulphoaluminate Cement Mortar
Authors: Yuan Xiao Lu , Zhou Shi Hua , Hu Wei Min , Liu Dong Mei
Published: October 2013

This paper investigated microbially induced carbonate precipitation in sulphoaluminate cement mortar. Urea and calcium of varied amounts were studied on the growth of microorganisms, the degradation of urea and the precipitation production. Compressive strength and flexural strength of sulphoaluminate cement mortar were measured and discussed. Results indicate that urea of 10g/L and calcium of 2mmol/L achieved favorable microorganism growth and the production of precipitation, which was composed of large amounts of calcite as well as small vaterite. Biodeposition increased the compressive strength and the flexural strength of sulphoaluminate cement mortar by 10% and 21%, respectively.
Experimental Research on Mechanical Properties of Cement Based Composites PVA Fiber Reinforced
Authors: Ouyang Wei , Geng Guang Long , Lin Mao , Yu Xiao Qing
Published: October 2013

Airport pavement surface mechanical characteristics and PVA fiber content, through experiments on PVA fiber reinforced cement matrix composites flexural strength, compressive strength and other mechanical properties are analyzed experimentally.
Analysis of Working Condition and Load Direction for Tripod Substructure of Offshore Wind Turbine
Authors: Wang Bin , Li Ying , Lv Na , Zhu Bin Bin , Li Wei
Published: October 2013

The control working condition and the control load direction of the typical Tripod substructure for the offshore wind turbine are studied by the finite element analysis software SACS. The results show that the different control criterions are corresponding to the different control working conditions for the Tripod substructure of the offshore wind turbine, and the control load directions vary with the structure form and the marine environments. Therefore, the static and dynamic analysis of the offshore wind turbine substructure in the single or limited load directions cant reflect the static and dynamic characteristic of the structure sufficiently. The multidirectional static and dynamic analysis of the offshore wind turbine structure has to be carried out.
Route Planning of Geomagnetic Aided Navigation for Vehicle under Matching Suitability Constraints
Authors: Wang Peng , Hu Xiao Ping , Wu Mei Ping , Mu Hua , Yuan Hai Ping
Published: October 2013

In geomagnetic aided navigation (GAN), the vehicle is expected to traverse the areas with excellent matching suitability in order to obtain high matching precision. The route planning problem under matching suitability constraints is studied based on particle swarm optimization (PSO) algorithm in this article. Firstly, the PSO algorithm is briefly introduced and the expanding space of route nodes is determined with the maneuverability constraints of the vehicle. Then the minimum movement distance, the ability of avoiding threats and the proximity to suitable-matching areas are considered to construct the fitness function of PSO algorithm. Further the route planning method under matching suitability constraints is proposed. Experimental results show that the proposed method is effective, and the vehicle can successfully avoid the threats and can traverse the suitable-matching areas.
Risk Assessment of Gravity Dam with Machine Properties
Authors: Li Fen Hua , Ma Hui
Published: October 2013

In recent years, water conservancy cause has been developing rapidly in China, the gravity dam risk assessment model has a great significance for the study. Firstly, the paper introduces risk and risk assessment. Then, the thesis uses expert investigation method to recognize the main risk factors of the project, analyze the probability and loss of risk factors of the gravity dam ; and based on the R = P × C model and fuzzy comprehensive evaluation method.Finally, we obtain the level of each risk factor, providing the basis for the prevention of the risks.
Study on Influence of Divided Conductor with Mechanical Properties on Operating over Voltage in Power System
Authors: Kang Wei , Zhang Li Xia , Du Yin Jing
Published: October 2013

This paper analyzed the influence that divided conductor to electrical fast transient burst. Divided conductor may change the magnetic field distribution around the conductor, but accordingly increased conductors electrical susceptance. The mechanism that the disconnecting switch cut off the power line when the no-load current is at peak and electric arc distinguished when the current pass zero and accordingly restraining measure is proposed. The outcome showed that the model can simulate the electrical fast transient burst in capacitive power line and makes it easy to analysis complex power system problems based on simple model. The method is proved to be correct and enforceable by validation of protective measures.
Analysis of Die Lock for Stamping Parts
Authors: Jing Liu , Liao Min , Yin Meng Jie
Published: October 2013

To solve problem of die lock area appeared in process of stamping, this paper presents method of coordinate comparison to qualitatively detect die lock area, and set out mathematical model to quantitatively adjust the stamping direction. The methods are utilized to a stamping part, and the results show the methods can effectively solve the die lock area problem.
Design of a Novel Down-Hole Pump with Hydro-Automatic Reversing Valve
Authors: Zhao Wei , Guo Chu Wen
Published: October 2013

Ultra-high-pressure-jet-assisted drilling is a main technique for improving the rate of penetration in well drilling. In this paper, a novel down-hole pump with hydro-automatic reversing valve was designed and explained. The equipment is a kind of hydraulic piston pump in which the reversing valve, the core component of the pump, is a five-way, two-position control valve. With the explanation of the working principle, it is understood that the down-hole pump has simple operating principle. According to schematics of the assembly drawing, also it is known that the actuations of pistons, check valves and the reversing valve are not complicated. Calculation and analysis results indicate that the equipment can intensify the drilling mud to 140-170MPa within an area ratio of 9.9 and 11.9 theoretically.
Application of Modified PANS Model for Computation of Cloud Cavitation around a Clark-Y Hydrofoil
Authors: Shi Wei Dong , Zhang Guang Jian
Published: October 2013

A density correction function was introduced to the Partially-Averaged Navier-Stokes Model (PANS) taking into account the local compressibility of two-phase mixture. The standard k-ε model, PANS model and the modified PANS model were used to simulate the unsteady cloud cavitation around a Clark-y hydrofoil and the evolutions of cavity shape, time-averaged turbulence viscosity distribution and lift coefficient variation were investigated. The results compared with experimental data show that the PANS model and the modified PANS model strongly reduce the turbulent viscosity and predict the cloud cavity shedding behavior observed in the experiment successfully, while the cavitation area and time-average lift coefficient predicted by the modified PANS model is closer to the experimental values than the original PANS model.
Cloud Service Platform for Big Data of Manufacturing
Authors: Zhu Hai Ping , Xu Yu , Liu Qin , Rao Yun Qing
Published: October 2013

With the rapid growth of manufacturing data, it is becoming an important issue to collect, manage, analyze and utilize the big data of manufacturing generated in the cloud manufacturing services mode. In order to solve the above problems, the characteristics of the big data and the difference from traditional manufacturing data were analyzed first. Then, the core technologies of manufacturing big data cloud service platform were grouped into a roadmap which was the guidance for research hierarchy. The platform architecture were also discussed to give an overall solution for each part and based on this platform a kind of application scenario was proposed. Thereby novel construction thinking for basic application mode of cloud manufacturing service based on manufacturing big data was provided.
Study on the Engine Speed Sensor Position Measuring Tool Based on Minitab
Authors: Cen Wu , Xia Li Xia
Published: October 2013

Research on key position speed sensor of automobile engine size measuring tool as an example, for studying the optimization of measuring tools through use the powerful Minitab software statistics, analysis and calculation functions. Randomly selected 10 parts as a measurement sample, then obtained the measurement data by experiment. Analysis of the measured data with Minitab and calculate the repeatability and reproducibility of the device. Find the causes of failure in measuring and explore how to optimize the measuring method. Improved measuring clamp structure, and through experiments verify its feasibility. Thereby solving the problem of measuring failure to ensure the accuracy of measurement data, and improve the measurement accuracy of the product.
Sensitivity Analysis of Surface Accuracy of Mesh Antennas to Cable Length
Authors: Fan Ye Sen , Ma Xiao Fei , Li Zheng Jun , Li Tuan Jie
Published: October 2013

To research the surface accuracy sensitivity of mesh antennas to cable length, the whole coordinates interaction method (WCIM) and the difference algorithm for sensitivity calculation are used. The calculating model of a large hoop truss mesh antenna was studied, and then some valuable conclusions were drawn from analyzing the calculating results of the numerical example, the feasibility of the approach were also proved. In the same situation of equilibrium, the surface accuracy sensitivity to the length of the individual cable is different. With the initial tensions in the networks increase, the sensitivity to the length of all the cables and the range of sensitivity decrease. The algorithm presented can be used to optimize the networks and adjust the surface accuracy of mesh antennas.
Research on Fuzzy Adaptive Control of Multi-Cylinder Synchronous Hydraulic System
Authors: Zhao Guo Hua
Published: October 2013

In large continuous rolling process, that the roller can be accurately control have an important impact on production. In allusion to the characteristics of variable and nonlinear of hydraulic servo system parameters for controlling roller position, fuzzy PI control and adjusting the parameters in on-line are used, in order to realize the three cylinder synchronous control. The research results indicate: for system with external force disturbance, the fuzzy adaptive control has a strong anti-interference ability, and improve the robustness of the control system of multi-cylinder synchronization, as a result, to obtain the satisfactory control effect. To be carried out simulation with Matlab, the results show that the fuzzy PI control scheme is a high precision, efficient and feasible method, and can obtain the satisfactory results.
Fan Cooling Scheme Analysis of the Injection Molding Machine Controller
Authors: Long Jing , Zhang Chun Liang
Published: October 2013

In the long run, the problem of high temperature has been existed in a companys injection molding machine controller. In order to solve the problem of heat dissipation, a kind of fan cooling scheme has been designed according to structure characteristic of the controller, CFD software ICEPAK is used in the report to make a numerical simulation as well as a simulation analysis for fan cooling scheme and the original scheme, By comparing cooling effects of two cooling schemes, the fan cooling scheme can not only meet the cooling requirements, but also the structure is relatively simple. It solves the problem of high temperature of the injection molding machine controller, furthermore it provided the foundation for the company to improve product.
Multi-Function Fusion Measurement Method for Surface Texture
Authors: Wang Sheng Huai , Xu Feng Hua , Chen Yu Rong , Xie Tie Bang
Published: October 2013

The texture and characteristics of surface have been becoming the leading factors to achieve the designed function of products successfully. So the measurement of surface texture is more and more important. A kind of new multi-function fusion measurement method for surface texture is presented in the paper. Four kinds of different scale measurement methods such as microscopy image measurement, vertical scanning white light interference measurement, white light interference nanoprobe measurement and white light interference diamond-probe measurement are fused for the surface texture multi-function fusion measurement in this method.
Design and Experimental Investigation on High Efficient Horizontal Micro Electrical Discharge Machine
Authors: Shu Xia Yun , Zhang Hong Hai
Published: October 2013

Micro-electrical discharge machining is a non-contact manufacturing process without macroscopic force. Microelectrode fabrication is the fundamental and influence factor of micro electric discharge machining. As for the efficiency of microelectrode fabrication, this paper proposed a fast online microelectrode fabrication method by an efficient horizontal micro electric discharge machine, in which an online diamond wheel ultra-precision grinding method and an online wire electrical discharge grinding method is combined to fabricate microelectrode. Machine designed in this paper consist of a CCD online dimension examination system, precision motion and feeding system, nanosecond-pulse independent discharged power supply and gap state-detection system. experimental study on microelectrode, micro nozzle fabrication and microstructure milling by the machine conducted. Microelectrode with 15 micrometers in diameter and micro hole with 50 micrometers in diameter are done in experiment. Results show that the composite method improves the efficiency of micro electrical discharge machining.
Casting Process Design and Simulation for Shaft Locking Pin
Authors: Zhang Guo Hong , Li Rong De , Tian Chang , Qiu Ke Qiang
Published: October 2013

Two kinds of methods of casting process for shaft locking pin were introduced. Simulated and analyzed the casting process by ANYCasting. Predicted the potential defects, resulted in a relatively optimized design. Replaced the traditional trial-and-error test with computer simulation, reduced design time and improved design efficiency.