bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of Occurrence Environment on Mechanical Properties of Shale
Authors: Zhang Hui Mei , Zhang Jia Fan , Lei Li Na
Published: March 2013

One of the main content of the environmental geotechnical engineering is engineering disaster problem brought by environmental change, the most basic problem is the influence of occurrence environment on the mechanical properties of rock. The water-saturated and freeze-thaw cycling experiment were conducted for dried shale under the open system, then carried out the mechanical properties experiment on dry and water-saturated state and on certain times of freeze-thaw cycles, the characteristics of the water softening, freeze-thaw damage deterioration, deformation and failure for shale were studied systematically. It is shown that the moisture has an important impact on mechanical effect of shale. With the increasing of the freeze-thaw cycles, the elastic modulus and strength of the shale reduce significantly, then approach stably after experiencing a certain number of freeze-thaw cycles, while the ultimate strain is increasing continuously. The engineering problems brought by environmental change must be solved from moisture and temperature in geotechnical engineering in cold regions.
REE Geochemistry and Resource between Co-Rich Crust and Basement in the Pacific Ocean: Based on Magellan Seamount Sample Research
Authors: Wang Feng , Fang Nian Qiao , Lv Shi Hui , Qiang Meng Lin , Liang Xiao , Shen Peng Fei
Published: March 2013

Using Magellan Seamount samples in the Pacific area to carry out the REE chemical analysis and microscopic descript,this paper analyze the content of REE between the basement rock and co-rich crust, distribution characteristics, distribution pattern.The results show that: the three layers samples contain high value, total quantity is about 1000×10-6, compared with normal deep sea sediments, foraminiferal nuclear shell and sea water content of rare earth elements10 ~ 100 times; Basement and co-rich crust have shown consistent in distrubution mode, REE content is perfectly high, co-rich crust of REE is mainly controlled by overlying seawater on the rock points erosion. volcanic eruption, ocean floor basalt weathering and biological chemical deposition on the formation of the crust also has certain influence. REE as a huge resource is superior to exploit, The comprehensive development and utilization of mineral resources provided good premise, it is possible to createREE resource utilization of the new way.
The Origin of Deep-Water Sandbody in Well LW3-1-1 in the Zhujiang Formation of Baiyun Sag, Pearl River Mouth Basin
Authors: Xiao Ling , Wang Han , Wei Qin Lian
Published: March 2013

According to comprehensive researches on indicators of lithology，indicators of primary sedimentary structures，bioclasts and matrix, summarize sedimentary characteristics and origin for sandbody in the Zhujiang formation of the Well LW3-1-1. The main rock types are mid-coarse grained sandstone with heavy coloured mudstone at its top and bottom，followed by very coarse grained sandstone with fine gravel occurs locally. It is showed that the sandstones are well sorted with very low content of mud, and possess high compositional maturity and textural maturity. Massive bedding, typical inverse graded bedding and inverse-normal graded bedding occur in the sandstones. So in general, it is a set of sedimentation of grain flow and density-modified grain flow.
Numerical Simulation of Pressure Relief for Extremely Thin Coal Seam as Protection Seam Based on UDEC
Authors: Zhang Li Ming
Published: March 2013

Overlying strata stress distribution, pressure relief region and crack distribution characteristics are analyzed based on numerical simulation of pressure relief with extremely thin coal seam as protection seam used by UDEC. The result is a true reflection of overlying strata movement and fissures for extremely thin coal seam as protection seam. Studies have shown that the roof displacement in the face of protective layer promoting is big, and as far away from the protective layer, the roof displacement is gradually reduced, the base plate displacement is almost the same, but the roof and floor to stress have been fully release; after protective layer mining, an "O" type pressure relief crack area is formed above the goaf, which is gas rich region and gas channels at the same time and suitable for extracting high concentrations gas.
Study on Feasibility of near Distance Coal Seam Group Ascending Mining
Authors: Yao Chun Hui , Lu Guo Zhi , Zhang Lin Liang
Published: March 2013

This paper, from the advantages and disadvantages of the conventional judgment methods of ascending mining feasibility, put forward the judgment criterions of near distance coal seam group ascending mining feasibility. And it is used the method of numerical simulation for the correlation analysis and verification. According to the existing ascending mining feasibility the judgment method has certain limitation. Therefore put forward the new determination method. Engineering application has some significance.
Study on Influences of Reserving Coal Battlement along Goaf Tunnels on Rockburst
Authors: Dong Chang Ji , Sun Guang Yi , Qin Tao , Liu Yong Li
Published: March 2013

With the continuous mining of coal, many mine have entered the deep mining mine ranks. Many problems which caused by the deep mining, especially the mine rockburst has had a significant increase, and a more and more serious trend, this has seriously affected the safety production[1]. There are many rockburst factors, and by the mining process and mining, its leading factor was difficult to be determined during mining. However, analyzing the mining process, and researching the influences of mining process on rockburst, making effective means of monitoring, adjusting the recovery process parameters, there are practical significance on mine safety. Reserving stacks along the gob tunnel is a mining technique which many mining often used. The document conducted numerical analysis towards the vertical stress distribution in the stacks, and come to a conclusion about the mining technique influence to shock bump, which has provided the basis for the recovery process parameter adjustment. Practice has proved that the method is feasible. The results of the analysis have practical significance.
Influence of Emulsifier on Compression Resistance of Deep Water of Emulsion Explosives
Authors: Liu Lei , Liu Qiang , Li Wen Xin , Su Hai Yang
Published: March 2013

The oil-in-water emulsifier is a key component of the emulsion explosive, experimental apparatus to simulate the environment of deepwater charge reusable research T155; the Span-80 are two commonly used emulsifier content of the emulsion explosive anti-Sham pressure performance the impact. Experimental results show that: T155, Span-80 emulsified explosive sample at the initial stage as the emulsifier content improved explosive performance and anti sham pressure performance has significantly improved, when the content is increased to a certain value against Sham pressure performance improvement is no longer a significant contribution small explosive performance; T155 content of 2% and 3% in Span-80, the emulsion explosives at this time there are a better anti-deepwater pressure performance and explosive performance.
Physicochemical Characterization of the Inclusion Complex of Diosmetin with Hydroxypropyl-β-Cyclodextrin
Authors: Zhang Yan , Brad Korbanjhon
Published: March 2013

In this study, the inclusion complex of diosmetin with hydroxypropyl-β- -cyclodextrin (HP-β-CD) was prepared to improve the water solubility of diosmetin by the solvent method. The content of diosmetin in the complex was determined by UV. And the physicochemical properties of the complex were analyzed by ultraviolet-visible spectrometry (UV), infrared spectrometry (IR), X-ray diffractometry (XRD), differential scanning calorimetry (DSC). The results showed that the physical phase of diosmetin had been changed. It was completely dispersed in HP-β-CD. HP-β-CD and diosmetin were combined by non-covalent bonds.
Reasonable Entry Layout of Lower Seam in Multi-Seam Mining Based on Numerical Simulation
Authors: Wang Xiang Qian , Yin Da Fa , Gao Zhao Ning , Zhao Qi Feng
Published: March 2013

Based on the geological conditions of 6# coal seam and 8# coal seam in Xieqiao Coal Mine, to determine reasonable entry layout of lower seam in multi-seam mining, alternate internal entry layout, alternate exterior entry layout and overlapping entry layout were put forward and simulated by FLAC3D. Then stress distribution and displacement characteristics of surrounding rock were analyzed in the three ways of entry layout, leading to the conclusion that alternate internal entry layout is a better choice for multi-seam mining, for which makes the entry located in stress reduce zone and reduces the influence of abutment pressure of upper coal seam mining to a certain extent,. And the mining practice of Xieqiao Coal Mine tested the results, which will offer a beneficial reference for entry layout with similar geological conditions in multi-seam mining.
Research on the Influence of New Shield Tunnel to Adjacent Existing Tunnel
Authors: Han Yan Hua , Ye Wen Hai , Wei Qi Fen
Published: March 2013

The displacement and stress of adjacent existing tunnel at different times after the new tunnel built are calculated by FEA models with ANSYS. The effects of each counting parameter of tunnel lining to results are analyzed, and some conclusions are educed, which can give references to the design and construction of siminiar engineerings.
Reverse Atom Transfer Radical Polymerization of N-Vinylpyrrolidone in Bulk Catalyzed by AIBN)/FeCl3/ PPh3
Authors: Yi Guo Bin , Wu Ying , Ai Ping Ke
Published: March 2013

The reverse atom transfer radical polymerization (RATRP) of N-vinylpyrrolidone (NVP) using azobisisobutyronitrile (AIBN)/FeCl3/triphenylphosphine(PPh3) as the initiating system, was successfully carried out in bulk at 80°C. Plots of In ([M]0/[M]) vs time and molecular weight evolution vs monomer conversion presented a linear dependence and the polymerization was proved to accord with the first-order kinetics. After 10 hours’ reaction, the monomer conversion was up to 84%. Gel permeation chromatography (GPC) was used in testing the molecular weight of polymer and molecular weight distribution, the results showed that polymer molecular weight distribution was as low as 1.018 (Mn=3288 g/mol). Moreover, the resultant polymer was characterized by 1H-NMR, 13C-NMR spectroscopy and Pyrolysis GC-MS, and the results showed that the polymerization mechanism is consistent with RATRP.
Multi-Scale Modeling of Industrial Crystallization Process
Authors: Fang Bao Liang , Wang Xue Kui , Jiang Peng , Sha Zuo Liang
Published: March 2013

The multi-scale method was applied to solve the multi-phase multi-scale problem in the industrial crystallization process. The fluid dynamics model was considering under the grid scale, and the population balance model was considering under subsystem scale. The macro model was used to interact with the environment. The crystallization process of potassium chloride was simulated by CFD and MATLAB. The result of the simulation shows the distribution of the supersaturation is strongly affected by the distribution of the suspended crystal volume fraction.
China's Copper Resources Supply the Challenge and Countermeasures
Authors: Liu Qun Yi , Wang An Jian , Chen Qi Shen
Published: March 2013

In the next 20 years, how many copper resources China has, when the peak demand peak comes, how great is the supply gap, and how to deal with that situation? Scientific answer these questions is important premise to reasonably establish the national copper resources supply strategy, and guarantee the safety of Chinese copper resources. The next 20 years, even by low growth situation, China's copper demand will also be more than half of total of 20 century global copper consumption, the domestic copper resources supply capacity cannot satisfy the demand, external dependence will be maintained for a long time in 70% or so, which should be paid attention to, scientific deployed, and dealt with.
Modification of Coal Tar Pitch to Reduce the Carcinogenic Polycyclic Aromatic Hydrocarbons
Authors: He De Min , Guan Jun , Wu Di , Zhao Shu Chang , Zhang Qiu Min
Published: March 2013

This research investigated on reducing carcinogenic polycyclic aromatic hydrocarbons(PAHs),especially benzo[a]pyrene (BaP) in coal tar pitch by modifying with the two selected modifiers: Paraformaldehyde and Epoxy Resin. The reaction emphasis on the change of temperature, reaction time and the quantity of the modifiers. The results indicated that Paraformaldehyde and Epoxy Resin could decrease the PAHs content greatly. The BaP decreasing rate reached 75.86% and 53.45% respectively. And the BaP equivalency content of the pitch decreased from 2.94% to 1.41% and 1.47% respectively. The properties of the modified coal tar pitch, including soft point (SP), toluene insolubles (TI), quinoline insolubles (QI) have changed a lot.
Experimental Study on the Effect of Ultrasonic Cavitation on Pyrolysis Characteristics of Oil Shale
Authors: Tian Hong , Liao Zheng Zhu
Published: March 2013

In order to investigate the pyrolysis characteristics of oil shale under in the extreme conditions of high temperature and high pressure generated by the ultrasonic cavitation. The different particle size of oil shale is mixed with water in accordance with the volume ratio of 1:12, under in different ultrasonic frequency and different power, the ultrasonic radiation experiments and the thermogravimetric experiments of different samples have been done. The results show that the organic content of oil shale samples reduced after ultrasonic radiation, and the chemical reaction rate of the remaining organic matter become faster, and its reflected as the volatile separate out rate was accelerated and the changes of TG(Thermogravimetry) and DTG(Derivative Thermogravimetry) curves were steeper. Oil shale pyrolysis weight loss rate peak values and the organic matter decomposed percentage during the pyrolysis have the selective on the ultrasonic frequency, ultrasonic power and particle size of the oil shale. Oil shale pyrolysis weight loss rate peak value increased with decreasing of ultrasonic power, and the weight loss rate peak value corresponding to the peak temperature was increased with the increasing of ultrasonic frequency, and the weight loss rate peak value corresponding temperature decreased with particle size increasing of oil shale. We can draw the conclusion that the ultrasonic cavitation can decomposition organic matter of oil shale, then, we should in-depth research the ultrasonic refining shale oil.
Research on Flow Units of Extra-Low Permeability Reservoirs in Fault Block Sheng554 of Shengping Oilfield
Authors: Zhou Lu Lu , Li Zi Nan , Liu Jun Gang , Zhang Yan Yun , Shu Guang Qiang
Published: March 2013

Taking the example of the fourth member of the Lower Cretaceous Quantou formation reservoirs in fault block Sheng554 of Sanzhao sag, this article discusses the methodology of flow units in extra-low permeability reservoirs. The research on flow units in such reservoirs can be divided into two ranks, one is to determine the distribution of seepage barriers and inner connected sands， the other is to analyze the differentia of fluid flow in the inner connected sands so as to subdivide the flow units. The result shows that the pelitic barriers are rather developed in fault block Sheng554. Through the analysis of differentia of fluid flow, according to the value of flow zone index (FZI), the inner connected sands can be classified into three types of flow units, among which type A with FZI value greater than 1.0 has better permeable property and higher intensity of water injection, and the ability of permeability and water injection of type B with FZI value between 0.5 and 1.0 takes the second place, and type C is the worst flow unit with the worst permeable property and intensity of water injection with FZI value less than 0.5. Among the three types of flow units, type A poorly develops, while type B and type C develops well. The research on flow units can provide reliable geologic bases for forecasting the distribution of remaining oil in extra-low permeability reservoirs and for developing remaining oil in the study area.
Selection of Coal-Bed Methane Well Completion Method Based on Grey System Theory
Authors: Yang Gang , Wang Zhi Ming , Peng Ru Jie , Chen Tian , Ren Zhong Xin
Published: March 2013

Aim at the diversity of coalbed methane well completion methods, grey system is used to select completion method. Firstly, implement production prediction and economic evaluation. Then evaluate five indexes: cumulative gas production, net present value, dynamic payback period, internal rate of return and risk factor. The most appropriate completion method can be got. When apply this evaluation method to Sihe mining of Qinshui basin, results show that pinnate horizontal well is the most suitable completion method, followed by fractured vertical well.
Unified Fracturing Design for Water Injection Well under Steady State Flow Regime
Authors: Luo Dan , Yang Zhao Zhong , Li Xiao Gang , Su Zhou
Published: March 2013

Unified Fracture Design for fracturing optimization is a simple and reliable way to push the limit of the injection ability, reported frequently in recent years. However, most studies focus on fracture design under pseudo-steady state flow regime. The analysis of the different pressure systems between water injection well and oil production well tells us that the steady flow regime in the formation takes up most life span of water injection wells, associated with the field experience. To maximize injection capability for fractured vertical water wells under this regime, a physical optimization method is developed based on the concept of proppant number. Meanwhile, two new type curves without consideration of formation damage are obtained for quantifying the correlation between dimensionless injectivity and dimensionless conductivity. Then, calibrated design procedures accounting for gel damage and non-darcy effect, are also proposed. Finally, sensitivity studies are addressed to clarify the effect of several variables on the optimum fracture geometry.
Oil Pipeline Leakage Detection System Design Based on Single Chip Microcomputer
Authors: Sun Tao , Zhen En Shuai
Published: March 2013

The system adopted the way of the combination of software and hardware which used to detect oil pipeline leakage and located the accurate leak point. The hardware circuit using STC12C5A60S2 SCM、various types of sensors and MAX485 network and so on. Application of the Kingview technology to design a set of leakage monitor screen in software component. The system uses different sensors to measure the changes in various parameters of pipeline. And by changing parameters to judge whether a leakage happened. If it judged the presence of oil spill then upload the alarm information step by step, after terminal PC receives various parameters of information and then display the information of each code on monitoring interface and alarm the exact location, at the same time sends alarm sound.
Interaction Strategy of Oil and Non-Oil Business in Oil Sales Field
Authors: Wang Yi , Xue Hong Yan , Su Yi Quan , Yan Zhao Yang
Published: March 2013

With oil sale industry becomes competitive fiercely, profit of Gas station oil product retail link tends to drop, while non oil business is in the vigorous development these years. In the gas station business, sales of refined oil and non-oil business can promote each other by ways of marketing strategy, which includes reasonable arrangement of categories of products and services, scientific and reasonable pricing strategy, the implementation of effective incentives, .these strategy can play a role of the leverage by which oil sales can promote non oil business, and Vice versa. Gas station non-oil business refers to the business outside of refined oil business, including convenience stores, restaurants, car wash, car, oil, auto sales, advertising agency, telephone, communication services, ATM machines, ticket sales, vending machines etc,Non-oil business development is extension of oil retail business development, is accompanied by the petroleum retail business development and derived products, can meet customer needs and improve business competitiveness on the basis of a plurality .
Experimental Research on Degradation of Azo Dye Wasterwater by Photocatalysis of Nano-TiO2 Doped with Ce / Fe
Authors: Song Hong Jiao , Zhu Lei , Wang Xun
Published: March 2013

The sol-gel process is applied to respectively prepare nano-TiO2films with Ce (cerium) or nano-TiO2films with Fe (ferium), which are used to degradate azo dye wastewater and present their characterization by XRD and HRTEM methods. The results show that proper amount of Ce or Fe doped into the nano-TiO2films can effectively accelerate the separation of photogenerated electrons-holes and easily form lattices, and consequently promotes nano-TiO2films' photocatalytic activity by nearly 20%.
Experimental Study on Wide Strip Mining with Similar Simulation under Deep-Lying Seams
Authors: Gao Bao Bin , Li Lin , Li Hui Gui
Published: March 2013

The ground movement laws due to wide strip mining under deep-lying seams has been studied with the experiment of similar material model, and the results of experiment could analysis qualitatively that it is feasible for wide strip mining under deep-lying seams. Taking 25 mining area of Hemei 9th mine as geologic background, the model of wide strip mining under deep seams has been made, which was used to study on the deformation of overburden and the ground movement laws. The results of experiment show that the properties and thickness of strata play a control role on the deformation, and the key strata play a core role; the deformation was dispersed with wide strip mining. When the width of strip mining and protective coal pillar are scientific and reasonable, the purpose of increasing the width of strip mining under the condition of controlling deformation could be achieved, and the entire mining area would be formed a flat subsidence basin. These achievements provide a scientific basis for solving the problem for the ground buildings protection in the conditions of wide strip mining under deep-lying seams, and that also provide some references for further studying on the method of wide strip mining under deep-lying seams.
A New Method to Predict Favorable Gas-Rich Area in Tight Sandstone Gas Reservoir in Daniudi Area
Authors: Han Hai Ying , Wang Zhi Zhang , Sun Xin Xiao , Wang Wei Jun
Published: March 2013

Daniudi gas field is a tight sandstone gas field in the northeast of Ordos Basin. How to use the successful experience in developing area to predict favorable gas-rich area in other areas in this gas field is very important to the next exploration and development in this field. This paper proposes a multi-information integrated method to predict favorable gas-rich area. Firstly describe sedimentary microfacies by integrating seismic, logging and geological information; and then summarize and analyze the seismic reflection patterns of medium-high productivity wells; finally determine the favorable gas-rich area with the distribution of storage coefficient based on the previous analysis. The welltest of newly drilled wells shows that the coincidence rate of favorable gas-rich area predicted by this method could be up to 90%,and this method could be extended to use in the other tight sandstone gas reservoirs.
The Sedimentary Control of Accumulation of Coalbed Methane in Hancheng Coalbed Methane Field
Authors: Wang Xiao Hong , Liu Da Meng , Yao Yan Bin , Li Ying , Xie Chen , Liu Ru Min
Published: March 2013

This paper discusses how sedimentary controls on accumulation of coal and coalbed methane in Hancheng CBM field. Two major coal-bearing strata include the Upper Carboniferous Taiyuan formation (a marine and terrestrial sedimentation) and the Lower Permian Shanxi formation (a terrestrial sedimentation). The favorable sedimentary environments for accumulation of coalbed methane by decreasing order are the shallow marine and barrier island system, the delta system, and the shallow marine and plane coast system.
Preparation and Application Properties Appraisement of Eco-Friendly Silicone-Modified Polyacrylate Binder
Authors: Ni Li Jie , Lei Kai Chen , Wu Dan , Han Jing , Li Xin Ping , Quan Heng
Published: March 2013

Six groups of polyacrylate binders are prepared with emulsion polymerization technique. D4 and ethenylsiloxane as modified monomers. Methyl acrylate (MA), butyl acrylate (BA) and styrene (St) are employed as basic polymerizing monomers; acrylic acid (AA) as catalyzer; glycidyl methacrylate (GMA) as reactive monomers; VTMS as coupling agent;sodium dodecylsulfate (SDS), composite fatty alcohol ether polyethylene oxide (composite AEO) as emulsifier and ammonium persulfate (APS) as initiator. The time and dosage of D4/initiator and dosage of coupling agent are changed for their effects on the reaction conversion rate and gel rate. Then, comparison with normal PA and green PA in the adhesivity, staining resistance, yellowing resistance, water tolerance and pliability of binders are carried. The studies show that the green silicone polyacrylate binder have the better comprehensive properties with D4 5% (on mass of monomers ) and ethenylsiloxane 1% (on mass of D4).
The Effects of Annealing on the Crystallinity of Polylactide Foams
Authors: Zhu Wen Li , Wang Jing , Park Chul B.
Published: March 2013

In this study, the effects of annealing temperature and annealing time on the crystallinity of polylactide foams were investigated. The foam samples were prepared through a tandem extrusion line by using CO2 as a blow agent. The research results showed that crystallinity of foamed samples could be significantly increased by annealing. The optimum annealing temperature and annealing time to achieve high crystallinity were varied according to the cell morphology of foams.
Characteristics and Photocatalytic Activity of TiO2 Films Immobilized on Ceramic, Glass and Stainless Steel
Authors: Shi Zai Feng , Zhang Su Min , Guo Su
Published: March 2013

To study the effects of substrate materials on the photocatalytic activity, TiO2films were immobilized on the inner wall surface of ceramic, glass and stainless steel tubes by sol-gel method. X-ray diffraction (XRD) results indicated that the crystal form of TiO2were all anatase type with theoretical particle size of 15 nm. According to the X-ray photoelectron spectroscopy (XPS) results, appearance of the element Na was observed which would decrease the photocatalytic activity. Scanning electron microscope (SEM) photos showed that the film coating on the ceramic and glass were even and uniform with thickness of about 300 nm and practical particle size of 20 nm to 100 nm. However, the film coating on stainless steel was hackly which would lead to diffraction of lights. The degradation rate constants of methylene blue (MB) with initial concentration of 5 mg.L-1were 0.049 min-1、0.029 min-1and 0.023 min-1with films coating on ceramic, stainless steel and glass tubes respectively. Degraded with TiO2film coating on ceramic tube, the according rate constants of phenol were 0.37, 0.14, 0.04 and 0.02 min-1for initial concentration of 2, 10, 50 and 100 mg.L-1respectively.
Adsorption Characteristics of Pb2+ from Aqueous Solution on the Corn Stalk/montmorillonite Nanocomposite
Authors: Wang Xiao Li , Wang Lixiang , Wang Huijuan
Published: March 2013

The corn stalk/montmorillonite(CS/MMT) nanocomposite was prepared by a solution intercalation technique. The effects of the initial pH value of Pb2+ solution, contact time and the dosage of adsorbent on the adsorption capacitiy of CS/MMT nanocomposite for Pb2+ were investigated. The adsorption kinetics and isotherms of nanocomposite were also studied. The results indicated that with the initial pH value increasing, the adsorption capacity of the CS/MMT nanocomposite increased. Compared with the adsorption capacity of CS (6.32 mg/g), the nanocomposite exhibited the higher adsorption capacity (31.95 mg/g). The adsorption behaviors of CS/MMT nanocomposite showed that the adsorption kinetics was in accorded with pseudo-second-order equation and the adsorption isotherms followed the Langmuir and Freundlich equation.
Preparation of Graphene and γ-Fe2O3 Doped Titanium Dioxide and its Photocatalytic Properties
Authors: Chen De Qiang , Li Yang , Chen Yi Qun
Published: March 2013

In this paper graphene is used to improve absorption rate of nano-titanium dioxide under visible light, meanwhile titanium dioxide is doped with superparamagnetism nano-powder of γ-Fe2O3 to modify the recovery of the photocatalyst. Gradually the increasing content of grapheme promotes the removal efficiency and correspondingly. Excitation condition is reduced and the photocatalysis property under visible light is improved and recycle rate of the titanium dioxide is effective promoted after the dispose. The effect of photocatalytic degradation of methylene blue is used to evaluate the photocatalytic activity. The methylene blue degradation rate raised from 53.4% to 85.9% with the increasing graphene load from 5% to 20% under visible light. The degradation efficiency of methylene blue decreased to 15% without the graphene load. The recovery rate of the photocatalyst can achieve 95% above. Graphene oxide works as the electron acceptor and photosensitizer to efficiently enhance the dye photodecomposition.
Road Performance Test and Application of TerraZyme Solidification Soil
Authors: Gui Lan , Li Yue Jun , Li Zeng Guang
Published: March 2013

TerraZyme is a completely different and new material for constructing road compared to the traditional road construction materials. Through the indoor and field tests of TerraZyme solidification soil, the road performance (e.g., unconfined compression strength, CBR value，modulus of resilience, hydraulic conductivity etc) of TerraZyme solidification soil was analyzed systematically. Meanwhile, the changing patterns in the case of various construction technology and different maintenance conditions were discussed. Then, the quality control index and measure for construction were presented. By validating the adaptability of TerraZyme solidification technology in engineering practice, it showed that the technology of TerraZyme solidification soil have many advantages such as no pollution, simple and convenient construction, higher solidified strength, good water stability and lower cost. Therefore, it can be broadly popularized and applied in the engineering practice.
Flow Behaviors Study on Superheated Steam Fluidized Bed Drying
Authors: Xiao Zhi Feng , Bao Xing , Wu Nan Xing
Published: March 2013

In the paper, we theoretical analysis the gas-particle flow behaviors in the drying chamber. Then establish a small experimental device and conduct a comparative fluidization experiment with superheated steam and hot air, which the dried rapeseed particles are the experimental material. The critical fluidizing velocity of the rapeseed particles in superheated steam is 1.26 m/s in the experimental condition. The experimental results show that the inlet operating flow velocity of superheated steam fluidized bed drying is greater than which of the traditional hot air fluidized bed dying under the same conditions.
Research on the Solvothermal Synthesis and Photocatalytic Properties of Nano-Size ZnO
Authors: Jiang Da , Zhang Hong Liang , Wang Ji Jie
Published: March 2013

Nano-size ZnO of one dimensional structure was prepared by solvothermal synthesis through dissolution-crystallization mechanism and characterized by TEM and XRD. Moreover, photocatalytic degradation rate of dye Rhodamine B (RhB) at the present of nano-size ZnO were carried out, and the results indicated that the nano-size ZnO prepared by such a method has excellent photocatalytic properties.
Politics of the Risk Management for Marine Invasive Alien Species in China: Constructing a Cooperation System
Authors: Tang Yan
Published: March 2013

Invasive alien marine species threaten biodiversity, marine industries (including fishing and tourism), and human health. A brief overview is presented of the current situation and the harm caused by marine biological invasions in China, in parallel with an analysis of the current state of related Chinese regulatory and legislative systems. The major impact and complexity of marine biological invasions on the ecological environment in China has had a major impact on human health, as well as social and economic development. Consequently, the responsibilities of current domestic management, which has too many administrative departments, remain unclear. Therefore, we conclude that it is necessary to establish an international, regional, and cross-departmental cooperation and management system, to effectively resolve the problem of alien marine species invasion in China.
CFD Study on Effect of the Air Supply Velocity on Contaminant Transport within an Road Vehicle Cabin
Authors: Xiang Li Ping , Wang Han Qing
Published: March 2013

The RNG turbulence model and species transport model were employed to simulate the dispersion of CO2 contaminant in the road vehicle cabin. Three different air supply velocities were analysed, the results indicates that CO2 concentration at middle zone is higher, CO2 concentration at seat zone is higher and easy to gather at lower air velocity. When air velocity is smaller, the height concentration appear distinctly layering. The concentration layering gradually weaken when the air supply velocity increase 5m/s. Increasing the air supply velocity the air velocity is higher than the levels and energy cost.
Investigation of Reading Background Colour Based on Visual Fatigue
Authors: Li Zhi Jian , Li Nuo
Published: March 2013

High whiteness of the paper, as well as inappropriate reading background color will produce a strong eye irritation, thus affecting the reading results. The paper studyed the relationship between the background color and visual fatigue, aimed to get a proper background color which can reduce visual fatigue. Experiment from three aspects to study: single color and visual fatigue relationship, the relationship between synthetic colors and visual fatigue, the relationship between paper whiteness and visual fatigue. Statistical analysis: single color is not appropriate as a long-length read background color; compared with the single-color samples, synthetic color helps relieve visual fatigue, and the most suitable background colors are tan and Moccasins color; the cultural paper with higher whiteness easily cause visual fatigue, so appropriatly reduce the whiteness helps relieve visual fatigue.
Mass Concentration Distribution of Inhalable Particulates in Different Villages Xuanwei County, China
Authors: Fan Jing Sen , Shao Long Yi , Li Ze Xi , Hu Ying , Hou Cong
Published: March 2013

In rural Xuanwei County, the women have the highest rates of the lung cancer compared with other regions in China. In order to understand the relationship between indoor mass concentrations and lung cancer, samples were collected in January, March and December 2011 by using TSP-PM10-PM2.5 impactor in Xuanwei County and Liupanshui District (control), China. Mass concentrations were analyzed using the membrane filter weighing method. The results show the average 24-h mass concentrations of indoor PM10 are all lower than the value of Xingfu village (control), Guizhou province, but these are obviously higher than the national standard (150μg/m3, Indoor air pollution standards(GB/T 18883-2002)), which indicates that indoor pollution is very serious. Moreover, the indoor PM10 mass concentrations are diverse in different villages, with Jiubao to be the highest, followed by Longlin, Luoshui, Hutou, Xinjian and Caohua. All the values of indoor are higher than outdoor, which indicates that indoor PM10 in Xuanwei County mainly originates from indoor pollution. Indoor PM2.5 pollution is very severe, but outdoor fine particle is less polluted. This shows that indoor fine particle in Xuanwei County mainly originates from indoor pollution.
The Production System Construction of Pollution-Free Vegetables
Authors: Liu Zi Ji , Yang Yan , Cao Zhen Mu
Published: March 2013

Along with social progress, economic development, and the improvement of living standards, quality and safety issues of the vegetables have been concerned increasingly. Pollution-free vegetables production has important ecological, economic, and social benefits. This article had described the key techniques of the pollution-free vegetables production, including planting environment selection, the varieties selection, cultivation management, fertilizers application, pests and diseases control, which could provide a reference for the development of pollution-free vegetables production in Hainan. According to the principles of sustainable development and basic requirements of green food, based on the status of pollution-free vegetables production, this study had summarized the problems in the production process of pollution-free vegetables and explored countermeasures to these problems, which can provide some ideas for the future development of pollution-free vegetables.
Emergency Rescue Methods of Urban Raw Water Safety Based on Periphery Model of Raw Water System
Authors: Pei Wei Zheng , Li Yong
Published: March 2013

Water safety is an important branch in the field of safety. By using the periphery theory and the similarity measure of Vague sets, the emergency rescue method of urban raw water safety which are used to meet the emergency demands with certain level of safety in emergencies were discussed. The periphery model of urban raw water system was established, and the mechanism of emergency rescue of raw water system to the safety was analyzed; the evaluation indicator system was constructed in two dimensions of pressure and support, and the principles for determining the control factors of emergency rescue of urban raw water safety were presented; the evaluation indicators were measured by formulas of similarity measure of Vague sets, and pressure indexes and support indexes of the periphery of the urban raw water system, as well as the formulas for emergency rescue of urban raw water safety were established; recommended evaluation standards for the emergency rescue degree of urban raw water safety in emergencies were provided, and methods to achieve the emergency rescue of urban raw water safety with certain safety level through emergency rescue control factors were put forward. With the raw water system of Chengdu as the background, application analysis of the established emergency rescue methods of urban raw water safety was conducted. The analysis results show that the established methods can achieve the emergency rescue of urban raw water safety with certain safety level in emergencies through the emergency rescue control factors and according to the emergency demands.
Characterization and Health Risk Assessment of PM10-Bound PAHs in Urban Air of Shenyang, China
Authors: Shi Jian Wu , Han Xin Yu , Sheng Tao , Bai Zhi Peng , Ning Ping
Published: March 2013

PM10 samples were collected at five sampling sites in city center of Shenyang from April 2008 to January 2009. The ambient concentrations of 17 selected polycyclic aromatic hydrocarbons (PAHs) in PM10 were quantified. Spatial and seasonal variations of PAHs were characterized. Based on its BaP and BaP equivalent concentration (BaPeq), the health risk of PAHs in Shenyang was assessed.
Hydrochemical Characteristics and Water Quality Assessment of Groundwater in Daxing District of Beijing, China
Authors: Li Mu Zi , Zhai Yuan Zheng , Zhou Jun , Wang Jin Sheng
Published: March 2013

Based on the groundwater samples collected in Daxing District of Beijing in June and October 2008, the groundwater quality is assessed and the groundwater hydrochemical characteristics are analyzed. The assessment of groundwater quality is conducted by using the F-value comprehensive assessment method, and GIS approach is used to obtain the zonation of groundwater quality. The results show that the groundwater quality is classified into II, III and IV class, and the groundwater quality gradually changes well from north to south. The groundwater of IV class is located in the northern part, which accounts for about 40% of the total area, and the major pollution factors are TDS and nitrate. The groundwater is mainly characterized by HCO3-Ca•Mg type. The concentrations of SO42-, NO3-, Ca2+ and TDS follow a decreasing trend generally from north to south, all of which have slight seasonal changes. Both natural factors and human activities have impacts on the chemical composition of the groundwater. The protection of groundwater environment in northern Daxing should be taken more seriously.
Research on Decision Support Platform of "Energy - Economy - Environment" Sustainable Development
Authors: Zhou Chang Yu , Shen Xiao Liu , Xin Zheng
Published: March 2013

This paper introduced the present situation of the research on "Energy - Economy - Environment" sustainable development, proposed design ideas to build an open service-oriented platform for basic research, presented the detailed design and implementation approaches of the open research platform which provided support, research and decision functions for the “Energy-Economy-Environment” coordinated development .The platform facilitates the related department of government and research staff those who utilize it for depth study, and provides support data and policy-making basis for building the mechanism of energy, economy and environment coordinate development and socioeconomic macro-development goals.
Isolation of Cr(VI) Resistant Bacteria and Exploration of Cr(VI) Removal Mechanism of Strain N-9
Authors: Lu Zhi Tang , Ouyang Xiao Zhen , Zhang Wei Wei , Lu Fang
Published: March 2013

8 Cr(VI) removing strains were obtained from 24 Cr(VI) resistance bacteria isolates. 6 strains showed more than 50% removal rates for 50 mg/L of Cr(VI) and 5 strains exhibited more than 50% removal rates for 80 mg/L of Cr(VI). Strains n-1, n-6, n-9 and n-12 could remove Cr(VI) more efficient at lower Cr(VI) concentration, while strains n-7, z-2, z-3 and z-7 could remove Cr(VI) at higher concentration. In which, strain n-9 could complete remove Cr(VI) by cultured in TYG broth containing 50 mg/L Cr (VI) at 28°C for 3 days and remove 80.7% of it in 80 mg/L Cr (VI) . Further exploration indicated that strain n-9 could reduce Cr(VI) by endoenzyme related to NADPH, which was carried out by comparing the removal ability of living cells, culture supernatant, inactived cells, cell lysate solution and the effect of SDS, thermal treatment, as well as the oxidoreductase coenzyme NADPH.
The Relationship between Environmental Development in Livable Community and Modern Property Management
Authors: Li Meng Ling , Liu Xuan Zhu
Published: March 2013

With the prosperity of socialist market and the improvement of people's living standard, people began to pay more attention to living environment in their community. Environmental construction in livable community is to satisfy people from all aspects of living, meet all needs of people in the community. Modern property management is a new mode of housing management, which is a pioneer to exploit and use energy; it is closely related to people's living quality. The article is starts with the concepts of environmental construction in livable community and modern property management, and discusses the relationship between them; at the same time put forward the concept of low-carbon energy saving in property management.
Mechanism of Hyaluronic Acid Protect Rabbit Chondrocyte Apoptosis Induced by NO
Authors: Liu Hua , Li Hua Guang , Liu Su
Published: March 2013

AIM: To investigate the mechanism of hyaluronic acid on rabbit chondrocyte apoptosis in vitro induced by NO. METHODS: We cultured rabbit chondrocytes as normal group and added SNP after cultured 24 h as model group. Treated group was added HA. We used cell culture experiment. We tested the activity of mitochondria though MTT. The flow cytometry detected mitochondrial membrane potential, the percentage of apoptosis and intracellular free calcium concentration.RESULTS: HA could elevate the active of chondrocyte mitochondria and MMP; it could decrease the rate of chondrocyte apoptosis and intracellular free calcium concentration.CONCLUSION: HA can inhibit the lowering of the MMP in chondrocyte, which has a stable role on MMP and inhibit apoptosis occurred. This effect may be related to inhibiting of intracellular calcium overload chondrocytes.
Study on Stability of the Water Quality of Purified Produced-Water in the Oilfield of Northern Shaanxi
Authors: Qu Cheng Tun , Tian Jing , Yang Xue , Wang Xin , Su Hong Guang
Published: March 2013

By means of analysising the characteristics of oily-sewage, the treatment process, the sewage stability characteristic of each device, It is evaluated of the stability of treatment process and pointed out the problem in the systemsof water treatment process. The results show that through the method of reducing the particle size of the filter media, optimizing the pharmaceutical system, as well as strengthen the management of the processing system. The suspended solids content, oil content, total iron content of sewage station effluent quality has reduced form 40mg/L~60mg/L、150~170mg/L,15.56mg/L~17.44mg/L to 0.7~0.9mg/L (≤ 1.0mg/L), 2.0~4.3mg/L (≤ 5mg/L), 0.09~0.32mg/L (≤ 0.5mg/L) fromexceed standard before improvement, reaching the reinjection standard.
Study on Urban Water Ecological Security Assessment
Authors: Xu Wen Jie , Chen Wei Guo , Zhang Xiao Ping , Gong Hui Ling
Published: March 2013

Many natural, environmental, ecological and social economical indexes are involved for urban water ecological security assessment. The index system is built with the pressure-state-response model put forward by Organization for Economic Co-operation and Development. The comprehensive index weights are determined with improved analytic hierarchy process and entropy value method. The model based on fuzzy optimum selection theory is used. The application of this model in Jinan is given as an example. The results correspond basically with the reality.
Fuzzy Cluster Analysis of Environmental Pollution in 31 of China's Provinces
Authors: Jin Jian , Hu Jing Chao
Published: March 2013

31 of China’s provinces was divided into seven categories by a process of collecting data, standardizing data, creating fuzzy similarity matrix and fuzzy equivalent matrix, and finding the threshold value. There is not strictly positive correlation between environmental pollution and economic growth in China’s provinces. Because of different industry development policy and industry feature, environmental pollution in some more developed provinces and cities is less serious, while that in some provinces of the intermediate level is more serious.
The Design of Environment Monitoring System Based on Ethernet
Authors: Yan Zhuang , Di Tian , Ye Yan Liang , Han Wen Ju
Published: March 2013

This paper studies environmental information monitoring and put forward structure scheme of embedded environment monitoring system based on Ethernet. Using C/S structure network design, the client site monitor nodes, real-time collect environmental information data and local preservation, through the Ethernet upload information to the server. Monitoring nodes are controlled by LPC1766 chip, the chip manage the node’s data acquisition, storage and transmission. Using μC/OS-II embedded real-time operating system as the client software platform, the experiment test results show that the system can effectively implement environment monitoring.