bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Dual-Energy Storage System Design for Pure Electric Vehicle
Authors: Chen Shu Ting , Wang Zhi Jie , Zhang Xiang Feng , Zhu Xiao Wei , Yang Feng Hui
Published: December 2014

Under the energy structure dominated by coal in China at present, the development of electric vehicles is the best way to deal with the problems of energy, environment, climate change and sustainable development and the best choice to make the auto industry change from big country to powerful country. So far, driving mileage is still the bottleneck to restrict the pure electric vehicle commercialization. Making full use of the realization of finite energy source and improving the efficiency of the driving system and the regenerative braking are the urgent problems to be solved. Regarding to the dual-requirements for high-energy density and high-power density, the dual-energy storage system is designed to be a composition of battery and ultra-capacitor plus bi-direction DC/DC converter in parallel. The main-loop circuit of the dual-energy storage system is constructed, and the working states are analyzed.
Multifractal Characteristics of Soil Particle Size Distribution under Sewage Irrigation in Different Irrigation Years
Authors: Lv Ye , Guan Xiao Yan , Ruan Ben Qing , Wang Yan Wei
Published: December 2014

Soil particle size distribution (PSD) is one of the most important physical properties of soil due to its strong influence on hydraulic characteristic, fertility condition and erosion of soil, etc. Sewage irrigation causes the differences in soil PSD. Thus, there may be massive organic contaminants and suspended particles in soil. In this paper, the frequency and multifractal necessity of soil PSD under sewage irrigation in different years were analyzed. Soil PSD demonstrates a heterogeneous characteristic under sewage irrigation, and this heterogeneity can be characterized using the multifractal technique, which calculates the multifractal spectrum parameters. The results showed that the width of multifractal spectrum ∆α is directly proportional to clay content; a remarkable effect of sewage irrigation on multifractal parameters was observed. The soil structure quality decreased with increasing sewage irrigation years. However, the soil structure improved when the soil was irrigated with freshwater for a long period after sewage irrigation. Therefore, multifractal parameters may be potential indicators for the physical property and quality of soil.
A Comparative Study on the Removal of 2,2',4,4'-Tetrabrominated Diphenyl Ether (BDE-47) by Four Different Methods
Authors: Lin Yi Miao , Li Ling Yun , Hu Ji Wei , Fan Ming Yi , Zhou Chao , Shi Xue Dan
Published: December 2014

The zero-valent iron (ZVI) particles were synthesized by the aqueous phase reduction, and the tapping mode image of atomic force microscope (AFM) showed that the diameter of the ZVI particles was in the range of 90 nm - 400 nm. By comparison of the debromination of BDE-47 by sunlight, ZVI, ZVI impregnated activated carbon (ZVI/AC) and ZVI impregnated ion exchange resin (ZVI/IER), the debromination effect was found to descend in the following order: ZVI/IER > ZVI/AC > ZVI > sunlight. Second order and first order kinetic models were used for the fitting of the debromination data of BDE-47. Results show that the debromination data of BDE-47 by the sunlight, ZVI, ZVI/AC and ZVI/IER in the current study are generally best described by the pseudo first order equation. Meanwhile, the debromination data of BDE-47 by the ZVI and ZVI/IER can also be described by the pseudo second order equation.
Adsorption of Humic Acid from Aqueous Solution Using Composite Magnetic Microspheres of Chitosan and Quaternary Ammonium Chitosan Derivative
Authors: Li Ming De , Wang Liang , Zhao Bin , Yao Yao
Published: December 2014

Composite magnetic microspheres of chitosan (CTS) and quaternary ammonium chitosan derivative (HTCC) were prepared by inverse suspension method. Tripolyphosphate (TPP) and glutaraldehyde were used successively to co-crosslink the microsphere matrix. The morphology was analyzed using optical microscopy and scanning electron microscopy (SEM), while the chemical composition was characterized using Fourier transform infrared spectroscopy (FTIR). The adsorption of humic acid (HA) by the composite magnetic microspheres (CHMMs) was investigated in terms of adsorption capacity and kinetics in order to optimize preparation conditions. Both CTS/HTCC mass ratio and crosslinker dosage greatly affected the properties of the microspheres. A batch of CHMMs was prepared when the mass ratio of CTS and HTCC was 1:1 and TPP and glutaraldehyde were17% and 30% of total mass of CTS and HTCC, respectively. These CHMMs were between 150 and 800 μm. 85% HA was able to be removed in 60 min using this proposed absorbent. It was fast and efficient for HA removal from aqueous solution.
Effect of Vinasse Application on Soil in Sugarcane Fields
Authors: Wei Meng Meng , Xu Gui Ping , Guo Hai Rong , Wang Xiao Fei , Chen Li Jun
Published: December 2014

The article mainly regards the soil of sugarcane fields in Guangxi as the research object. The study will discuss the changes of the sugarcane soil after vinasse application, including physical and chemical properties of soil, heavy metals content, soil microorganism and soil enzyme activities. The results showed that, vinasse application can reduce soil pH, improve the total N,P,K content; decrease the soil heavy metals, showing a significant impact on Cd. In addition, the influences to the number of culturable bacteria in the soil were more obvious than to the number of fungi and actinomycetes. And the activity of invertase in soil was also improved, which was advantaged of the carbon cycle in the soil. In short, vinasse can be used as a kind of liquid fertilizer to improve soil fertility and protect micro ecological environment of the soil.
Biomass Molding Technology and the Research State of Biomass Binder
Authors: Liu Rui Chun , Huang Bo , Lv Wei , Gao Qiang , Wang Xin Yu
Published: December 2014

With the coal energy reduction and human concern for global environmental issues,briquette development imperative. Its coal utilization, environmental pollution, etc. is becoming a hot research by many scholars at home and abroad. The key lies in one of briquette binder choice, directly to biomass as a binder, not only to meet the basic requirements of briquette, such as reducing coal ignition point,but also the prospects for the full application of biomass development.
Study on Non-Selective Photocatalytic Degradation of Organic Dyes in Presence of Hollow CdS Nanospheres
Authors: Wang Han , Zheng Jing Tang , Zheng Xing
Published: December 2014

In this study, template method was applied to synthesize CdS hollow nanospheres via sonochemical method. The morphology, size of the nanospheres and crystal structure of the synthesized hollow CdS were characterized. The results showed that the hollow CdS nanospheres formed have pure cubic sphalerite structure and exhibit good monodispersity and size uniformity. The photocatalytic activity of the samples was evaluated by the decoloration of Rhodamine B (RhB), Methylene Blue (MB) and Methyl Orange (MO) aqueous solution under UV-vis light irradiation. The results indicated the hollow CdS had a good photocatalytic activity and show little selectivity of attack and are able to oxidize various organic pollutants. Moreover, the results of hydroxyl radical (•OH) detection using fluorescent probe method was in accordance with the RhB decolorization efficiency, which the •OH is likely to be the main active species responsible for dye degradation.
Difference of Morphological Structure and Characteristics of Physiology and Biochemistry between Two Types of Alfalfa Callus
Authors: Qin Yan Jun , Gong Wu Que , Liu Ting , Yang Jing Hui , Liu Yan Jun , Huang Wei Zi
Published: December 2014

In order to know the key factors of callus development on single cell clone, characteristics of physiology and biochemistry and morphological structure on two types of Alfalfa callus was studied. The results showed that the cell membrane permeability and malondialdehyde content was same on two types of callus; but, their soluble sugar content and peroxidase activity in cells was larger different, the soluble sugar content: soft callus > huge callus, and soft callus was 2.09 times of huge callus; peroxidase activity: huge callus > soft callus, and huge callus was 1.35 times of soft callus. Huge callus cells were larger, loosely arranged, cell vacuolization and cytoplasm was thinner than soft callus. However, soft callus cells were smaller, loosely arranged, cell vacuoles was smaller and cytoplasm was thicker than hug callus. Huge cells had the same membrane metabolic with soft cells, but soft cells had higher sugar accumulation than huge cells, and soft cells metabolism are vigorous, while huge cells are more aging.
The Groundwater Pollution Disaster Assessment of Feicheng Basin
Authors: Liu Hai Jiao , Fan Ming Yuan , Zhang Bao Xiang , Shi Yu Zhi , Yang Xiao Feng
Published: December 2014

In order to better protect the karst groundwater resources of Feicheng Basin, paper evaluated the groundwater pollution disaster based on the groundwater pollution investigation of the study area. Results show that the high pollution disaster areas are mainly distributed in plain area of Feicheng Basin, the moderate pollution disaster areas are mainly distributed in the downtown of Feicheng City and Wangguadian Town, the rest of the area are the low pollution disaster area.
A New Water Pollution Hierarchical Governance Policy for Liaohe River
Authors: Yuan Yong Qiang
Published: December 2014

Liaohe is one of our country key management “Three rivers and Three lakes” , Liaoning provincial government introduced a number of key policies to control pollution in the Liaohe River. Such as, local government leaders response for river pollution prevention in his Jurisdictions policy, source control and prevention policy, and so on. This articles makes river grading partition as guiding thought, and select microscopic scale’s three indicators-monitoring and assessment value ratio, the ratio of the total amount of pollutant emissions and water environmental capacity , environmental investment index as assessment indicators . These three indicators consturcted a Liaohe river management policy of river hierarchical governance and water quality achieve standard by period. The two ratios-monitoring and assessment value , the total amount of pollutant emissions and water environmental capacity’s value confirmation is based on Liaohe Tieling’s seven sections monitoring data. What this new water pollution hierarchical governance policy can do is support an positive and effective method for Liaohe river pollution prevention.
Association Study on Air Pollution and Cardiopulmonary Function of Primary and Secondary School Students
Authors: Wang Hai Ying , Liu Yong Jing , Tang Di Hua
Published: December 2014

Impact of air pollution on health has become an important social issue. Air pollution is closely related to the morbidity and death rate of cardiopulmonary disease, produces short-term acute and chronic hazards on health, and especially has long-term and profound impact on primary and secondary school students’ constitution. Long-term effects of air pollution on cardiopulmonary function of primary and secondary school students are represented as incidence increase of asthma, decrease of FEV1, MMEF, VO2max, MVV and other indicators and relation to NO, PM2.5 and CO. Students taking exercise in air pollution environment can cause acute cardiopulmonary reactions, such as abnormal changes of MVV, VC, FEV1, FVC and other indicators after exercise, which may relate to O3, PM10, PM2.5, SO2and NO2. Therefore, schools should strengthen the awareness of air pollution in implementing sports, and conduct development of control measures, to ensure the effect of physical exercise.
Characteristics Identification of Runoff and Sediment Flux Based on Wavelet Analysis Approach in Lower Yellow River
Authors: Shi Yu Zhi , Fan Ming Yuan , Zhang Yu Yan , Liu Hai Jiao , Yang Xiao Feng
Published: December 2014

Due to the influences of climate change and human activities, the water and sediment flux of the Yellow River are certainly changing. This paper selects monthly time series of runoff and sediment flux from 1950 to 2009 for study at Lijin station, in lower Yellow River. A widely used identification method, wavelet analysis, is applied for recognizing changing point and cycle of the runoff and sediment respectively in multi-scale of annual, flood season and non-flood season. The results indicate that there are two significant changing points in 1985, 2002 year, and cycle recognized results are different in multi-scale as well as with different hydrology factors.
The Trihalomethanes Formation Potential in Treated Waters Exposed to Ozone and Chlorine
Authors: Yue Shan Chao , Zhao Le Jun , Wang Xiu Duo , Wang Qi Shan , He Feng Hua
Published: December 2014

The present study was implemented to investigate the trihalomethanes formation potential (THMFP) in drinking water treatment and to determine the impact of preozonation on the reduction of Trihalomethanes (THMs). The full-scale examination was carried out, using Luan River as the raw water. Two different preoxidation methods, prechlorination and preozonation were performed. THMFP and THM species were analyzed. The investigation indicated that 18.72% of THMFP was removed during preozonation. Further study on the distribution of THM species showed a significant reduction of Chloroform and bromodichloromethane, 20.62% and 17.39% during preozonation, respectively. The result suggested that the application of preozonation process is an effective method for reducing THMs generation in drinking water treatment. In the final effluent, the total removal rates of THMFP were 47.49% after preozonation and 55.67% after prechlorination.
CFD Simulation of Air Flow through the Annular Distributor of a Swirling Fluidized Bed
Authors: Venkiteswaran Vinod Kumar , Ramli Syaida Hazira , Raghavan Vijay R.
Published: December 2014

Fluidized beds are widely used in a variety of industrial processes. The air distributor being an integral part of the fluidized bed, the air flow characteristic through it is of great importance as far as the design and working of it is concerned. Inappropriate design will lead to an incomplete fluidization and improper mixing of the air and bed particles. The current study was carried out to investigate the flow characteristics and predict non-uniformity in flow through the annular distributor of a Swirling Fluidized Bed and its variation with various aspects of the distributor like blade overlap angle and blade inclination. In this study, the commercial CFD package FLUENT 6.3 was used for analysis. The velocity and pressure profiles for various blade designs were investigated at the distributor outlet based on several operating variables including air inlet velocities, blade overlap angles (9o, 12o, 15o, and 18o), blade inclinations (10oand 15o), along with variations in the opening between the distributor blades. The most significant finding of this work is that the fluid tends to flow through a path with least resistance. The flow path with the largest cross section area and shortest path length has been identified and explains the velocity profile at blade exit.
Numerical Simulation of Modified Trailing Edge of Francis Turbine Stay Vane Based on Solid-Liquid Two-Phase Flow
Authors: Wang Dong , Zhang Si Qing , Zhang Yun Long
Published: December 2014

In order to investigate the silt abrasion of modified trailing edge of stay vane in Francis turbine, the numerical simulation of trailing edge with different geometries were carried out based on the solid-liquid two-phase flow by means of Computation Fluid Dynamics. The results show that low solid volume fraction distributes on the chamfered surface of trailing edge, and high solid volume fraction distributes on the end of oblique surface. The smaller the modified angle is, the larger the distribution area of high solid volume fraction is, which show the trailing edge with smaller oblique angle may suffer from silt abrasion. Therefore, in order to solve the vibration caused by Karman vortex the trailing edge has to be sharpened, the oblique angle of trailing edge should not be too small. At end of trailing edge needs to ensure a certain thickness, especially the trailing edge near the lower ring can be thicker, which can meet the anti-abrasion requirements.
Effects of Intake Temperature on the Combustion Characteristics of HCCI Engine Fueled with n-Butanol
Authors: Li Gang , Zhang Chun Hua , Shen Ye Chong , Shen Ya Chong , Zhou Jia Wang
Published: December 2014

In order to study the influence of intake temperature on the combustion characteristics of HCCI engine fueled with n-butanol, the 2nd cylinder of a water-cooled, naturally aspirated and double-cylinders diesel engine was converted into HCCI combustion mode. The cylinder pressure (P), rate of pressure rise (dp/dφ), heat release rate (dQ/dφ) and cycle-to-cycle variations (CCV) were compared and analyzed by bench tests under the conditions with different intake temperatures at engine speed of 1000r/min, excess air coefficient of 2.5. The experiment results show that the peak pressure (Pmax), the peak rate of pressure rise and maximum heat release rate tend to rise and the peak arrives in advance with the increase of intake temperature. As the intake temperature rises, the coefficient of variation for Pmaxreduces and combustion stability increases.
Discussion on the Structure of Low-Temperature Radiant Heater of Gate Station
Authors: Gao Shun Li , Li Hong Yu , Shi Yong Zheng , Yan Dan Ping , Liu Rong
Published: December 2014

As the city develops radiady, the natural gas is widely used nealy in every filed of people’s lives. During the pressure regulation, the phenomenon of ice jam, which can affect the normal utilization, happens. Heater can be regarded as one of the most important measures that prevents pipe from freezing occurring due to temperature drop caused by pressure regulation. Low-temperature radiant heater with tight structure is specifically designed for gad gate station. The heat transfer process of the gate station is analyzed. In the meantime, the mathematical model of radiant heater, which could be fitted for the gate station, is erected. At the same time, the influence of heat exchange size, radiant panel size and radiant efficiency, brought by tube are discussed. The result shows that the tube type of radiant heater has a greatest performance. Considering the tubes with compact structure, taking tube type of radiant heater as the heater used in gate station is the optimal decision. The analysis combined in this paper is the foundation to choose the heater of gate station.
Calculation and Experiment of Vibration of Droplet Subjected to Pulse Electric Field in Emulsified Oil
Authors: Gong Hai Feng , Peng Ye , Yang Zhi Jun , Zhang Xian Ming
Published: December 2014

Under excitation of high-voltage pulse electric field, the deformation vibration of droplet in oil was very important to electro-dehydration of emulsified oil. So far, the theoretical calculation on vibration of droplet was scarcely studied. In order to calculate the vibration of droplet, the forces acted on a single droplet needed to be analyzed, and the vibration kinetic model of droplet needed to be established. The model was resolved by method of harmonious wave balance. It was found by analysis that the resonance of droplet might occur. In the experiment, the results approximated to that of model calculation. So it was verified that the model could efficiently calculate the vibration amplitude of droplet.
An Empirical Analysis on the Influence Factors of Industry Flow of Shaanxi Province Science and Technology Human Resources
Authors: Wang Cheng Jun , Jia Huan
Published: December 2014

Based on the field survey data,statisticsing and analysising the influence factors of industry flows of science and technology human resources in Shaanxi Province by using multiple linear regression model and Logistic regression model.The results show that: enterprise promotion chance, industry development ability, family factors and change lifestyle these four factors promote or weaken the effect on the flow of talent directly;Age,working ability,professional degree are the constitute factors influencing science and technology talent flow;However, the influence of gender, education, welfare and residential moves is not significant for industry flow of science and technology human resources.
Dynamic Research on Residents Consumption and Power Consumption of Harbin Using GM(1,1) Model
Authors: Song Xi Bin , Liu Xi
Published: December 2014

The modern city development and improvement of residents’ consumption level have strong dependence on power consumption. In the important period of the optimization of energy structure adjustment and residents’ consumption structure upgrade, the article carried out the correlation analysis of Harbin city residents’ consumption and power consumption, discussed the corresponding relation of them, and forecasts the residents’ consumption and power consumption based on GM(1,1) model. It also put forward suggestions that included reasonably limit consumption, effectively energy saving, focused on the development of new energy, and to promote economic development.
Effects of Nutrient Enrichment on a Realistic Food Web
Authors: Zhao Lei , Zhang Hua Yong , Zhao Fang , Tian Wang
Published: December 2014

Nutrients supplies play a crucial role in population distribution of food webs, and it is one of the most important challenges in both theoretical and applied ecology to better understand the ‘bottom-up’ effect. Here we analyzed a realistic food web containing one limiting nutrient and two producer-consumer interactions. Through the simulations of the mean population size and the variability of each species, we found that 1) in infertile environment the coexistence of species increases with nutrient supply; 2) the mean values of species abundance increase dramatically at then remain constant with the increase of nutrient supply; and 3) the stability of each population also increases and then remains constant. These results are inconsistent with the traditional predictions known as the ‘paradox of enrichment’, and our analysis may provide a solution to this paradox.
Evaluation Method on Energy Consumption and Carbon Emission for Public Building
Authors: Li Yu , Yuan Liang , Li Ze Hong , Shi Yuan Yuan , Li Shi Feng
Published: December 2014

According to the United Nations Intergovernmental Panel on Climate Change (IPCC) calculations, the architecture industry totally consumed 40% of the energy and 36% of CO2 emissions in world. The large public building with rapid floor area growth, high-energy consumption and huge potential for energy saving features, is a key area of energy conservation obviously. This paper researched the trend of low-carbon building construction and high building energy efficiency, the public building energy consumption and its carbon emissions effect. Moreover, consumption and carbon emission of different types of public building energy was analyzed. Estimation methods on public building energy consumption and carbon emission were summarized in the last part.
Game Models of Green Supply Chain Involved the Third Party Logistics
Authors: Jiang Shi Ying , Ma Chun Yan
Published: December 2014

The green supply chain consisting of the third party logistics and retailer is as the background.Some factors are considered such as product green degree, carbon tax and consumer preferences. Two kinds of green supply chain game models are set up: Stackelberg game model dominated by the third party logistics,Stackelberg game model dominated by retailer. The game models are compared, and finally the numerical simulation has been carried on.Study shows that in the game models, with the improvement of product green degree, product price, logistics price, profit of the third party logistics, the profits of retailer and the supply chain will increase;With the increase of carbon tax, product price and logistics price also unceasingly increase.
Research on Land Intensive Use of the Langfang National Economic and Technological Development Zone in Hebei Province
Authors: Zhang Qing Jun , Lu Jun Na
Published: December 2014

The extent of land intensive use is directly related to the sustainable use of regional land resources, and it is closely related to regional socio-economic development. The land intensive use evaluation indicator system is built from three aspects of status of land use, land use efficiency, land management performance, and the level of land intensive use of the Langfang national economic and technological development zone is evaluated by multi-index comprehensive method. The evaluation results are deeply analyzed to find the problems of land use. The research results objectively reflected the actual status of land use in development zone, the direction of tapping the potential of land management is indicated, and the basis is provided for the government to audit upgrading and expansion areas of the development zone.
Research on the Impact of Power Grid Harmonic on Energy Meter and its Solution Methods
Authors: Chen Hao , Luo Zhi Kun , Ou Chao Long , Chen Fu Sheng , Xiang Jie , Shen Li Man , Li E Ying , Huang Rui
Published: December 2014

This paper presents a power consumption model with harmonics existing in power system, the influence of harmonic linear load and the influence of nonlinear load energy metering is discussed, then the analysis of the impact of the harmonic of induction watt-hour meter and electronic watt-hour meter measurement features is given. In the next part, the measurement principle of harmonic watt-hour meter is introduced, and a new type of electric energy metering scheme based on harmonic watt-hour meter is given, so that the electric energy metering fairness problem caused by power grid harmonic will be solved effectively.
Ultrasonic-Assisted Extraction of Total Flavonoids from Cassia Seeds
Authors: Chen An Hui , Chen Shang Long , Liu En Qi , Li Ji Wu , Shao Ying , Zhang Chuan Li , Wu Yong Hua
Published: December 2014

The ethanol concentration, solid-to-solvent ratio, extraction temperature and extraction time were optimized by using orthogonal array design, an ultrasonic-assisted extraction (UAE) method was formed for extracting total flavonoids from Cassia Seeds. The optimal conditions for total flavonoids preparation were found to be extracted at 55 °C for 40 min with 75% (v/v) ethanol and a solid-to-liquid ratio of 1:30 (g/mL). The UAE was proven more efficient than the conventional extraction (CE) technique, which could be considered a time-saving method. Therefore, the UAE could be a promising candidate for extracting phenolic phytochemicals from natural plants.
Cloning of MeGolS5 Promoter from Cassava (Manihot esculenta Crantz) and Expression Analysis in Abiotic Stress of MeGolS5
Authors: Wang Yu Qing , Fan Jie , Li Rui Mei , Zhang Fan , Geng Meng Ting , Yao Yuan , Fu Shao Ping , Hu Xin Wen , Guo Jian Chun
Published: December 2014

The MeGolS5 promoter fragment (1492 bp) was amplified from the genomic DNA of Manihot esculenta Crantz by inverse polymerase chain reaction. Promoter sequence analysis by PLACE and PlantCARE showed that the cloned fragment contained several putative cis-elements, such as abscisic acid response element (ABRE), heat shock elements (HSE), as well as TATA-Box and CAAT-Box. The expression prfile of MeGolS5 shows that the gene is induced by several abiotic stresses, such as salt, drought, H2O2 and ABA.
Research of Preparation and Properties of CaSO4/HAw Bone Graft Substitute
Authors: Yan Ting Ting , Wu Si Yu , Fang Min , Chen Qing Hua
Published: December 2014

Calcium sulfate/hydroxyl apatite whiskers composite is possible to be used as bone graft substitute, for its biocompatibility, controllable degradation, and suitable mechanical properties. In this study, calcium sulfate/hydroxyl apatite whisker composites were fabricated and characterized. The characteristics of the composites were assessed by means of scanning electron microscopy (SEM), X-ray diffraction (XRD) and immersing testing techniques. The composites prepared in this article have been confirmed to be ideally used as biodegradable implants.
Phytic Acid Sepiolite Compound Adsorbent on the Adsorption of Cd2+ Performance Research of Heavy Metals
Authors: Sheng Jiao , Yan Shu Mei , Feng Xian , Zeng Gui Hua
Published: December 2014

This paper studies the preparation of phytic acid with sepiolite compound phytic acid compound sepiolite adsorbent of heavy metals adsorption performance is good, and the adsorption of the optimum adsorption conditions was studied, the optimum adsorption conditions for adsorbent dosage 30 g/L, temperature 40°C, pH = 3, the adsorption equilibrium time 30 min, Cd6+, concentration is lower than 50 mg/L.
Optimizing Land Use Structure for Low Carbon Target: A Case Study in Zhangye of Gansu Province
Authors: Zhang Xin Yu , Shi Pei Ji
Published: December 2014

Regional land use is an important source of carbon emissions .To some extent , the optimization land use will change the pattern and structure of human energy consumption .In this paper, we try to put forward a new approach to optimize the land use structure of the low carbon target in Zhangye .Three schemes for land use low-carbon optimization were proposed and analyzed, and the policy suggestions were put forward finally . Compare with the original plan, Optimization program in the year of 2020, the amount of carbon accumulation increase 124.1648 million tons, and carbon emissions reduce 1,152,100 tons. This indicates that the scheme for land use planning to achieve carbon reduction and carbon accumulation has important guiding significance.
Soil Carbon Mineralization and Microbial Biomass Carbon of In Situ and Exchange-Location Incubation in Forest along Urban-Rural Gradient
Authors: Lu Rui , Peng Xiao Ying , Yu Ming Quan
Published: December 2014

Urbanization in high-speed nowadays is changing soil carbon dynamic. Soil carbon mineralization (Cm) and microbial biomass carbon (MBC) of in situ and exchange-location incubation was characterized along urban-rural gradient in Nanchang, China. As a result, soil Cm and MBC of in situ incubation were higher in urban than in suburban, which were significantly higher than those in rural area (P<0.05), at the same time, urban soils incubating in rural area mineralized about 1.8 times the amount of carbon than rural soils incubating in rural area; MBC in soils of exchange-location incubation exhibited a significant decrease tendency with area farther away from urban as well (P<0.05), while there was no significant difference observed in Cm of soils from the same origin incubating in different area between urban, suburban and rural (P>0.05). The result indicated that urban soils have potential for higher losses of carbon than rural soils.
Impact of Biochar Modified by HNO3 on Plant Growth in Low Nutrient Coastal Saline Soil
Authors: Xia Yang , Liu Min Hui , Song Xiao Na , Zheng Hao
Published: December 2014

Salt stress, with nutrient deficiency, has been threatening plant growth in coastal saline soil. This study is to address the potential of using biochar treated with 1.69 mol/L HNO3 (BCH) as a soil amendment to ameliorate coastal saline soil. Both BCH and BCH with fertilizer treatments increased plant height and biomass of sesbania (Sesbania cannabina) and seashore mallow (Kosteletzkya virginica), especially at the adding rate of 1.5% (w/w). The maximal biomass of sesbania and mallow was increased by 158%, and 214%, respectively. However, with the increasing adding rate, the value of biomass and height for both plant decreased, but not lower than those of the control. It suggested that the biochar treated by HNO3 is a good way to overcome biochar’s inherent nutrient deficiency and ameliorate the soils with salt stress.
Algicidal and Bactericidal Effect of Potassium Monopersulfate Compound on Eutrophic Water
Authors: Wu Ming Song , Xu Xin Yang , Xu Xun , Zeng Yue Ting , Zhang Jing Nan , Li Xiao Yu , Xu Jing , Duan Ran
Published: December 2014

Algae and bacteria blooms in eutrophication in summer have made the quality of landscape water degradation. Treatment efficiency of potassium monopersulfate compound, a new kind of oxidation reagent, on killing algae and bacteria has been valued and the effect of influence factors, such as dosage, contact time and temperature are also discussed. The results indicated that potassium monopersulfate is appropriate for killing algae and bacteria in landscape water, dosage and contact time are the major influence factors. The contact time should be longer than 20min and the algicidal rate is higher when the temperature is above 20°C.
Numerical Experimental Research on Shear Strength of Rock Mass Discontinuity Concerning Roughness
Authors: Wei Ji Hong , Yang Yuan Yuan , Gao Xiao Bing
Published: December 2014

The discontinuity’s surface topography is often assumed as smooth and straight. To overcome non-considering roughness of discontinuity, direct shear numerical experiment is proposed to research influences of discontinuous roughness on its strength. Firstly, based on researched mechanical properties of discontinuity, the laws how asperity inclination angles and asperity heights of discontinuity and the mechanical behavior of discontinuity are studied. The results show that the failure of discontinuity considering roughness is not instantaneous. It is a complex process which goes through energy accumulation. The cohesive force increases with asperity inclination angle and asperity height increasing. The inner friction angle also goes through the same changes. However, when the normal stress reaches 500kPa for asperity inclination angle and 700kPa for asperity height, the shear strength experiences a decreasing process.
Analysis and Research of Hydrogeochemical Characteristics about Yiliang Geothermal Field
Authors: Ba Jun Jie , Xu Shi Guang , Li Chen Chen
Published: December 2014

Hydrogeochemy data is not only applied to the analysis of spatial and temporal variations of groundwater quality, but also provide information about groundwater hydrodynamic environment. To explore the cause, groundwater recharge source, etc., the hydrogeochemical analysis method has become to be a commonly used research techniques. Based on the geological data resent years,this article synthetically analyses thermal reservoir characteristic,and geochemical characteristic,and thinks that Yiliang geothermal field is a stratabound low temperature geothermal field.The thermal reservoir is Dengying Formation (Sinian). Hydrogeochemical field is determined by the hydrogeology of a geothermal field. This paper also discusses the chemical distribution characteristics of thermal reservoir fluid water, and the relationship between fluid chemical composition and temperature, etc. While chemical characteristics of reservoir fluid and the other basic geological characteristics of geothermal standard can be used as the reference to the planning and development.
The Geological Characteristics for Pre-Cambrian Shale Gas Accumulation in China
Authors: Jing Tie Ya , Feng Fu , Yang Guang , Zhang Jian
Published: December 2014

China has huge shale gas resources potential. The exploitation of shale gas can effectively reduce atmosphere pollution and relieve the energy shortage in China. Organic rich shale in pre-Cambrian period mainly lies to North China and Yangtze areas. The shales were developed in continental shelf and restricted marine basin. The distribution is stable with the thickness ranging from 10m-150m. The geochemistry characteristics are favored for shale gas accumulation for pre-Cambrian shale. The shale mineral is mainly quartz and feldspar. The pre-Cambrian formations have favored geological condition for shale gas accumulation. The favored intervals and regions for development of shale gas are Doushantuo shale in Upper Yangtze areas and Hongshuizhuang shale in northern Hebei Province or Jianchang Basin in western Liaoning Province.
Research on Electromagnetic Engineering and Technology with Application of EFIT Code in J-TEXT Tokamak
Authors: Yuan Fei Fei , Xu Tao , Qian Tian Tian , Zhang Fan
Published: December 2014

The Grad-Shafranov equation is solved by EFIT code in J-TEXT tokamak. In this paper, it applies EFIT code to analyze the evolution of some plasma parameters during the discharge of J-TXET tokamak. Through plasmas balance calculation, the pressure of plasmas, internal magnetic surface and plasma current density profile are given. It provides important reference data for the operation and control of the J-TXET tokamak discharge.
Intelligent Science of Knowledge Retrieval System Model Based on Ontology
Authors: Liang Ting Ting , Li Chun Qing
Published: December 2014

Compared with the traditional information retrieval, knowledge retrieval based on ontology has higher retrieval efficiency. In order to adequate arena for the effectiveness of knowledge,and intelligence to meet the users on the implicit and explicit knowledge retrieval demand, the author designed a system model of intelligent science based on ontology. Detailed analysis and elaboration of the three aspects: subject knowledge ontology construction, ontology knowledge retrieval, service based on intelligent. Provide methodological guidance and technical support to enrich the research contents in the field of knowledge retrieval.
Network Security Isolation System Based on Information Filtering
Authors: Zhao Dong Ming , Zhu Kai Feng
Published: December 2014

Internet technology as the cutting-edge of the current information technology, it has penetrated into every aspect of human life, more and more government agencies, enterprises are using Internet to improve their office efficiency and to establish new business operation model, in order to improve its reaction ability in fierce competition. Internet has brought convenience for people to work, while the security problem of network also will follow. The internal network not only needs to ensure the security of their data, but also needs to exchange data with the external network, then by adopting network security isolation system which takes gatekeeper technology as its core technology, so that we can ensure that internal network and external network will have physical isolation at any time, meanwhile, according to business needs, it also has multiple forms of information and data’s exchanges.
Data Processing in Model of the Bank Credit Risk Assessment Based on Asset Assessment
Authors: Wang Lv Rong
Published: December 2014

Asset assessment theory research lagging behind the industry development is an important problem existing in current assessment industry, and the construction of theoretical framework system is particularly urgent. Asset appraisal theory frame system is divided into the logical starting point and the theoretical framework. According to the connotation of asset assessment and the concept of the logic starting point in philosophy, the logic starting point of the asset assessment is thought to be the value discovery. According to the relationship to the logical starting point, establish a theoretical framework with four-layers, which takes the value found as the qualitative, nine evaluation factors as the kernel, takes the legal system, exam training, industry, rules and member acknowledges as the outer core, takes the institutional environment, economic environment, social and cultural environment etc. as the evaluating environment.
Applied-Information Technology in Multi-Agent Simulation in Securities Market Modeling
Authors: Xia Wei Li , Wei Xing Ji , Sun Tong Tong
Published: December 2014

Multi-agent simulation could make a contribution to a better understanding of social and economic systems. To some extent, multi-agent simulation can be seen as experimental technique for hypothesis testing and scenario analysis, which can be used complementary and in combination with experiments in social and economic systems. The multi-agent model represent a broad class of models which have been introduced to describe the economic dynamics in a more realistic way. Their building blocks are: the agents are heterogeneous with respect to their various properties like strategies, wealth, time scale,etc; the interaction between them is a fundamental element and, of course, it can have many different characteristics; price dynamics depends on the balance between offer and demand but the specific implementation can be different. In the framework of applied-information technology of microscopic simulation, a multi-agent model of the stock exchange is developed for the case of one type of shares.
Early Diseases of Asphalt Pavement Damage of Water Research and Countermeasures
Authors: Zhang Zhi Ming
Published: December 2014

The life cycle of a road engineering usually contains multiple stages. It starts from design, through the construction, usage and damaged to discarded. Early disease water damage of asphalt pavement has great influence on the service life of road surface. Through analyzing the mechanism of water damage and summarizing the main forms of water damage, this paper puts forward the reasonable distribution of asphalt mixture and the good rigidity relationship between base and surface, which is the key factors to avoid water damage. We analyze and summarize the advantage of drainage asphalt pavement in the prevention and control of water damage of asphalt pavement in order to apply it in the practice of engineering.
Synthesis and Characterization of Unsymmetrical Diarylethene Based on Phenylpentane
Authors: Zhang Xiao Dong , Wei Sha Sha , Pu Shou Zhi
Published: December 2014

An unsymmetrical photochromic diarylethene, 1-[2-methyl-3-benzothiophene]-2-[2-methyl-5-(4-pentylphenyl)-3-thienyl] perfluorocyclopentene (1a), has been synthesized, and its properties including photochromism and fluorescence have been investigated. The results showed that this compound undergo reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light in solution.
Blast-Hole Cuttings Grindability Relationship with Silica Content and Bit Wear Rate
Authors: Adebayo B. , Agbalajobi S.A.
Published: December 2014

The relationship between grindability of blast-hole cuttings, strength parameters and bit wear rate were investigated. In order to achieve this, drill cuttings were collected from twenty blast-holes drilled in a quarry. The samples were tested in the laboratory for Silica content using X-Ray Fluorescence (XRF) spectrometer. Also, the length of button worn on the surface of bit was measured at regular interval with aid of digital vernier caliper on the field as drilling operation progresses to determine wear rate. Sieve analysis was used to determine the size distribution of the blast hole cuttings in the laboratory using sieve shaker while grindability was determined using the ball mill, by grinding for certain number of revolutions. The result obtained show that the weight of drill cuttings retained on 850μm decreases while weight retained on 75μm increases as wear rate increases. Grindability was correlated with wear rate and weight retained at 75μm sieve, the value of multiple coefficients of correlation is 0.126 and 0.064 respectively, this show that there is no relationship between grindability, wear rate and weight of cuttings retained on 75μm. The result of correlation of wear rate and weight retained at 75μm shows that strong relationship exist between them and the value of multiple coefficient of correlation is 0.892.
High-Strength Ceramic Cutting Tools with Multipurpose Coatings for Highly Effective Processing of Tempered Steel
Authors: Grigoriev Sergey Nikolaevich , Volosova Marina , Vereschaka Alexey Anatolevich , Seleznev Anton
Published: December 2014

The article considers new technological principles of designing of vacuum-plasma coatings for ceramics on the basis of Al203–TiC and Si3N4and the requirements for the following coatings: (Zr, Hf, Cr) N; (Ti, Cr) N; ZrN. Each of these coatings has specific features which can significantly improve working capacity of ceramics in various operation conditions. Technological process and the equipment for deposition of coating on ceramic samples and cutting plates are developed. Undertaken studies of the coatings deposited according to the developed technological principles, show ability to increase considerably beam strength of the samples from oxide-carbide and nitride ceramics. The article shows the possibility to replace grinding operation of details of bearings from tempered steels like ShH15SG type (62 ... 65HRC) to turning by the cutting tools equipped with plates from Al203-TiC ceramics with a coating (Zr, Hf, Cr)N.
Technological Features of Obtaining of Nanostructured Coatings on TiNi Base by Magnetron Sputtering
Authors: Rusinov P.O. , Blednova Zh.M.
Published: December 2014

Using the methods of experimental design made ​​the choice determining factors for the calculation of modes magnetron sputtering coating SME steel 321H; received mathematical-statistical model that relates the performance criteria with the main parameters of the process. Studies on developing the technology of magnetron sputtering materials with shape memory TiNi-based study of the structure and formed surface layers showed that the recommended spraying regimes provided obtain a homogeneous quality of the surface layer with a grain size of 15 nm to 50 nm, chemical and phase composition which provides the memory effect.
Effective Use of Technology Flowdrill in Production Engineering
Authors: Maščeník Jozef , Pavlenko Slavko
Published: December 2014

The present paper deals with the efficient use of new technologies boreholes will use thermal drilling Flowdrill. Analyze the state and qualities of the material before and after using drilling. Evaluate and recommend their potential customers in order to decide on the basis of the results obtained, productivity and quality requirements. In conclusion, the determination of the possible applications of the technology in practice after changing the properties of the material around the hole.
A Precise and Efficient Method to Manipulate the Amplitude of Parabolic Function of Transmission Errors
Authors: Lee Cheng Kang
Published: December 2014

This paper proposes a system of nonlinear equations to manipulate the amplitude of parabolic function of transmission errors. Firstly, the characteristics of parabolic function of transmission errors are defined. Then, a system of nonlinear equations for manipulating the amplitude of parabolic function of transmission errors is created based on both the conditions of contact and the constraint on the amplitude of function of transmission errors. As the number of independent scalar equations in the system minus the number of unknown parameters is one, one extra design parameter can be applied to manipulate the amplitude of parabolic function of transmission errors. The solution to the extra design variable is automatically, precisely, and efficiently determined by the computer program which is created based on the Newton’s root finding method. The time-consuming manual iterations for trying the value of design variable are eliminated. The proposed method can be applied to both two-and three-dimensional gearing problems. At last, a pair of meshing gears composed of a circular-arc spur gear and an involute spur gear is presented to verify the methodology proposed in this paper.
Ocean Surface Rendering Method Based on Mild-Slope Equation
Authors: Yu Zhuo , Xiong Li , Shang Feng
Published: December 2014

Mild-slope equation is usually used in many simulation applications. The equation has obviously benefit which based on physical method that can present the real status of water, but the shortcoming is also clearly that the calculations spending lots of times which not support some real-time applications. We use hyperbola to simple the equation calculation process, and use alternating directions implicit (ADI) way to solve this equation. The result shows that the ADI way can use less calculation and less time to accomplish the calculation. We also use the new features of GPU(graphics process unit) to speed up the calculation so that we can render the surface in real-time application.