bluuebunny/crossref_metadata_2025 huggingface dataset:
The Formation of Iron Plaque on the Roots of Carex cinerascens in Poyang Lake and its Effect on the Lead Accumulation
Authors: Liu Chun Ying , Gong Xiao Feng , Yang Ju Yun
Published: October 2014

Iron plaque is portal of the pollutants into the plant body and plays an important role in reducing pollutants. A pot experiment was conducted to investigate the formation of iron plaque, and lead accumulation and distribution in Carex cinerascens. The data showed that the amounts of iron plaque increased with Fe additions. Under the condition of 0 —100 mg kg-1 lead concentration for Poyang Lake wetland soil, it was the most beneficial condition for the formation of iron plaque when iron concentration was 500 mg kg-1. There was a significantly correlation between the concentrations of Fe and Pb in iron plaque on the root surfaces of Carex cinerascens (r=0.68). Most of the lead accumulated in the roots of Carex cinerascens, a few of lead accumulated in the shoots of Carex cinerascens. Iron plaque promoted the migration of lead from soil to roots, it played a role to eliminate heavy metals pollution of Poyang Lake wetland soil to some extent.
Study on Information Needs for Promoting the Development of Circular Agriculture
Authors: Wang Hou Quan , Li Hui , Wu Xun
Published: October 2014

The current agricultural development mode has changed from the traditional mode to circular agriculture mode. The circular agriculture is the inevitable request to realize the sustainable development of agricultural production. Thus we should make full use of existing resources and science and technology to serve for the circular agriculture. To grasp the role of the information service, the paper analyze the use of information technology in every link of circular agriculture.
Study on the Distribution of Land Value-Added Income Based on Ecological Compensation
Authors: Sun Le , Yuan Shao Feng
Published: October 2014

Farmland has important ecological service value. Underestimating the added value is one of the reasons of extensive land use. From the view of ecological protection and sustainable development, this paper discusses the ecological function of farmland and assesses its ecological value by using statistical methods. Taking Shaoxing county of Zhejiang province as an example, the study analyzes the necessity of ecological compensation based on the investigation of land uses current situation and land acquisition compensation level. The compensation system in land acquisition should be improved in the aspects of institution, concept and policy.
The Value Assessment of Ecosystem Service Function in Lingang Wetland Park
Authors: Lv Ling Yue , Li Hong Yuan , Yang Jia Nan
Published: October 2014

In this study, the ecosystem service function value of Lingang wetland park was calculated,such as hydrological regulation,water conservation and purification, biological habitat, erosion control, carbon sequestration and oxygen release port,with the market value method, carbon tax and forestation cost method, shadow engineering method, replacement cost method ,ecological value method and other methods. The results showed that the total ecosystem service function value of this wetland park is ¥1.03×108•a-1. The species habitat, carbon sequestration and oxygen release and hydrological adjusting function value is larger, which is 40.3%, 38.3% and 13.0% of the total value, so they are the main core function value of the Park. Therefore, the scientific and rational planning should be carried out in the development of the wetland park, avoiding influencing the ecosystem service function of this park.
In Vitro Induction and Identification of Tetraploid in Watermelon [Citrullus lanatus (Thunb.) Matsum and Nakai]
Authors: Zhang Na , Ren Jian , Cheng Wei Shun , Zeng Hong Xia , Shi Xian Feng , Li Yu Hua , Sun Yu Hong
Published: October 2014

This research induced tetraploid watermelon through tissue culture. The cotyledons of a diploid mini-watermelon (A7) were treated with different concentrations of colchicine on medium for different time. The autotetraploid plants were identified basing on morphology, determination of the number of chloroplasts in stomatal guard cells and flow cytometry analysis. A stable autotetraploid material was observed. The results showed that tetraploid watermelons could be obtained under different treatments, and the highest tetraploid induction rate was up to 25 %. The most effective way was cutting the proximal cotyledons at the 7th day after sowing, then explants were cultivated on MS medium with 0.1 %(w/v) colchicine for 72 h, the adventitious shoot induction rate was 62.5 %, and multiplication coefficient was 3.6.
Landscape Plants’ Regional Research and Conservation
Authors: Li Cheng , Yuan Miao , Gong Yi , Zhang Gang
Published: October 2014

Landscape plant is the foundation and guarantee for rural and urban greening, and it has characteristics of regional distribution and landscape territory. Research on investigation and evaluation, selection and cultivation and protective utilization of wildlife plants, original cultivated plants and introduced plant resources according to different area types can provide the basis and technical assistance for regional landscape plants selection.
Research on Hierarchy Distribution of Vegetation in Ten-Li Strand Artificial Wetland Park
Authors: Diao Chun Yan , Tai Wen Sheng
Published: October 2014

Through visit survey and field analysis, The hierarchy distribution of vegetation from the Dragon Bay to Guizhou Minzu University in Ten-li Strand artificial wetland park was studied. the main distribution and characteristics of vegetation, landscape distribution types of main vegetation and landscape design were analyzed. There were mainly 9 kinds of vegetation types, such as deciduous coniferous forest, evergreen coniferous forest, deciduous broad-leaf forest, evergreen broad-leaf shrub, bamboo forest, halophyte shrub, high grass, low grass and aquatic vegetation. By research on different hierarchy vegetation selection and different hierarchy vegetation landscape construction, it would provide forceful supports for city or town to take full advantage of the vegetation resources in artificial wetland parks and choose the reasonable configuration of landscape vegetation.
Thyroid Hormone Levels Alteration in Sole (Cymoglossus robustus) Exposed to Polybrominated Diphenyl Ethers
Authors: Tian Sheng Yan , Song Chun Zheng , Gao Yi Nan
Published: October 2014

Juvenile sole (Cymoglossus robustus) were exposed to BDE-47 and BDE-99 through feeding in the laboratory for 60 days, followed by 60 days of clean food, to examine bioaccumulation and potential thyroid hormone disruption effect. The results show that both BDE-47 and BDE-99 accumulate in fish tissues. The free tri-iodothyronine (T3) concentrations in the plasma of sole varied significantly throughout the experiment but were not related to PBDEs exposure. In contrast, plasma levels of thyroxine levels (T4) were lower in both groups of PBDE-exposed fish compared with control fish after 60 days of exposure, suggesting that PBDEs may influence thyroid homeostasis.
Study on Response of Alpine Timberline in Taibai Mountain to Climate Changes
Authors: Li Pei Xiao , Bai Hong Ying , He Hong
Published: October 2014

This article based on RS/GIS technology analyzed the spatio-temporal changes of mountain timberline in Taibai Mountain Nature Reserve from 1988 to 2009 which is aimed at reveal the response to climate changes. The study results shown:As the temperatures rise, timberline the overall position was on the move in recent 22 years; in the aspect of vegetation ,the rising line for the top of Larix chinensis forest invasion in shrub meadow vegetation areas proved the rising of timberline in Taibai Mountain Nature Reserve.
The Spatial Patterns of Lilium regale Population
Authors: Yang Zi Song , Can Yang
Published: October 2014

Approaches like the diffusion coefficient, the Morisita index, the intensity and the mean crowding are employed in this paper to determine the spatial patterns of population distribution of L. regale. The results show: (1) The diffusion coefficient and the Morisita index of L. regale are sharply greater than 1 and the spatial pattern is the cluster; (2) The mean crowing is 59.1638 and the intensity is 2.2410 and the level of intensity is rather high.
Analysis of Coexpression Genes in Oryza sativa L. Treated with Low-Energy Ion-Beam
Authors: Chen Wan Guang , Zhang Yan Zhao , Cheng Yan Wei , Ya Hui Yuan
Published: October 2014

Xindao-18(Oryza sativa L. subsp. japonica Kato) were irratiated with a low-energy ion-beam, the growth form were observed and transcriptome of samples were sequenced by Illumina HiSeq2000 platform. The different expression genes were identified from transcriptomes control and treated samples. Finally, the coexpression of different gene expression were construce and seventy DEGs were annotated as transcription factor (TF). Among them, ten transcripts have the higher network density, and two genes, LOC_Os06g15330 and LOC_Os03g51970, had a still higher network density while elevate PCC paramater, which indicated that the indentified coexpression transcriptors may play important role in response to N+ ion beam treation.
A Study on Selecting Segmentation Object of Object-Oriented Inversion Based on Hyperspectral Chlorophyll-A in Chaohu Lake
Authors: Hou Xue Jiao , Liu Jing , Cui Wei
Published: October 2014

Beased on in Situ Water Quality Data and Hyperspectral Data from HJ-1A satellite in Chaohu Lake, through Contrasting the Object-Oriented Chlorophyll-a Inversion Precision Of single Band with Two-Band Model, the Results Show: (1) In Hyperspectral Object-Oriented Remote Sensing inversion, the Inversion Effect of Choosing Combination Model to Segment Is superior to that of Choosing the Single Band Directly, and Using Combination model to Segment can Certain Degree Solve the Problem that Commercial Softwares cannot Segment all Hyperspectral Data at the same Time.(2)When Inversing Chlorophyll-a Concentration with Hyperspectral Data, the Single Bands Constituting the Optimal Model Are not Always in the Traditional Characteristics Band Range of Chlorophyll-a. so All bands should be Comprehensively Analyzed to take Full Advantages Of hyperspectral Data when Inversing. these Conclusions Will provide Basis for the Future Segmentation Object Selection of Object-Orientedon Hyperspectral Lakes Chlorophyll-a Inversion and Certain Reference for Band Selection of Hyperspectral Inversion Model.
Band Selection of Hyperspectral Chlorophyll-A Concentration Inversion Based on Parallel Ant Colony Algorithm
Authors: Tang Cong , Wu Yang , Huang Jing
Published: October 2014

In chlorophyll-A concentration inversion which based on hyperspectral remote sensing image, must use ground synchronous spectrum measurement data to find the best three band combination by iterative-method, we proposed the problem to analysis the existing band selection methods of chlorophyll-A concentration inversion and put forward a band selection method of the hyperspectral chlorophyll-A concentration inversion three-band model which based on parallel ant colony algorithm. The method is based on analysis of the optical properties and three band model theory, determines the interval of the sensitive band from hundreds of bands，then takes band reflectance of the sampling points and Correlation coefficient of sample points of chlorophyll-A concentration as the initial pheromone list, and updates distance parameter list constantly to let the parallel work ants find the best band combinations. Experimental results show that the method can select the optimal three-band fast and efficient by the remote sensing data and samples of chlorophyll-A concentration data, and the steps of chlorophyll-A concentration inversion can be simplified greatly.
Forest Vegetation Spatial and Temporal Pattern Analysis Based on NDVI in Jiuzhaigou
Authors: Qiu Yi Shu , Gao Jun , Zhan Qi Lin
Published: October 2014

This paper takes Jiuzhaigou area for example, selecting Landsat remote sensing images in phase time about years of 1999, 2002, 2006 and 2007, using ENVI and ArcGIS software for image data processing, making spatial and temporal characteristics and distribution pattern analysis of vegetation index NDVI of Jiuzhaigou forest. The result shows that NDVI of Jiuzhaigou forest has obvious characteristics of spatial and temporal variation. The paper provides the analysis process and reference to the forest vegetation research of other areas.
Temporal and Spatial SST (Sea Surface Temperature) Distribution and its Impact on Chlorophyll - A Concentration in Southern Ocean during 2002-2012
Authors: Zeng Chen , Xu Hui Ping
Published: October 2014

Sea Surface Temperature (SST) has great impact on algae growth in ocean. And the variation of SST closely relate with global climate. As 1/5 of the greatest ocean, southern ocean SST temporal and spatial distribution needs wide attention. We uses MODIS SST inversed algorithm to find its regulation in this decade (October 2002 to March 2012, October to December and January to March a year). Significant annual cycles appears that SST rises from October and falls in February, while area >70° has peak in January. SST decreases with latitude ascending from spatial distribution. Through in high latitude, Ross Sea, Prydz Bay and Weddell Sea enjoy quite high temperature comparing to its adjacent area in same period. Almost whole blooms occur in these three seas in December, January and February, among which Prydz Bay has the highest suitable SST with 0.3-1.7°C, Amundsen Sea has the second with-0.2-0.3°C, Ross Sea has the lowest with-0.9- -0.8°C. Amundsen Sea owns the vigorous bloom and the narrowest suitable temperature period.
Ulva prolifera Monitoring Study in the Yellow Sea from Multi-Temporal Remote Sensing Images
Authors: Zhou Yan , Zhou Bin , Gai Ying Ying
Published: October 2014

Multi-temporal Moderate resolution Imaging Spectroradiometer (MODIS) remote sensing images were used to monitor the massive blooms of floating green tide algae Ulva prolifera in the midwest of Yellow Sea (YS). In addition, from the marine environment elements of sea surface temperature (SST) and sea surface wind field, the growth and drift characteristic of U. Prolifera were studied based on MODIS thermal infrared channel SST data and Windsat wind field data. In May 2014, U. Prolifera accumulation areas were first found in central YS north of Subei Bank. With summer arrival, seawater temperature of ocean surface gradually increased in YS, It provided a more suitable environment for the growth of U. Prolifera. Due to the prevailing northerly winds in central and western YS, U. Prolifera advected to the coastal waters of Shandong Peninsula, and spread to the northeastward. In late June, it had a massive bloom and reached the maximum coverage in the northern YS. The U. Prolifera drift characteristic was confirmed by the analysis on SST and sea surface wind field, and the result shows that under the environment of suitable sea surface temperature, the driving force of the prevailing sea surface wind field might be the main reason of YS U. Prolifera bloom occurrence.
Allocation of Land Value Increment from TDR Perspective
Authors: Cao Yu , Wu Ci Fang
Published: October 2014

With the rapid economic growth and expansion of urban area in the past over thirty years in China, the land value increased rapidly in the process of land use conversion, which has aroused great social conflicts. Model of land value increment allocation is established based on the concept of land development right and applied in a case study about Guangzhou. It is concluded that according with the new approach of land value increment distribution based on LDR, special consideration for the function of social security of farmland, providing an new approach for the reform of land property right system and land compensation system reform. Keywords: Land value increment; Benefit allocation; Land development right; Farmland conversion
A Structural Equation Model of Urban Forest Recreationists’ Satisfaction
Authors: Zhou Lu , Tang Shu
Published: October 2014

With the method of exploratory factor analysis and structural equation modeling, this paper presented a model of urban forest recreationists’ satisfaction and conducted an empirical research. The main conclusions are as follows. Perceived value has an important and positive impact on the formation of satisfaction experience. Perceptions of "landscape resources", "facilities and services", "functional utility", "social utility" and "emotional utility" are the main factors arising the perceived value of recreationists. Meanwhile, Perceptions of "emotional utility" and "landscape resources" are the key factors influencing recreationists’ satisfaction. Furthermore, Perceptions of "functional utility" and "social utility" positively affect the perceived value of recreationists, and the perception of "facilities and services" is likely a guarantee factor for satisfaction experience. In addition, this paper has confirmed the applicability of the Means-end theory and the Cognitive-affective theory in the practice of urban forest recreationists’ satisfaction study.
Observation Frequency Selection Based on Dynamic and Electric Field Excitation Method for Advanced Detection in Coal Mine Roadway
Authors: Liu Zhi Min , Liu Xi Gao , Zhang Jin Tao , Zhang Wei Jie , Wu Miao
Published: October 2014

The dynamic and electric field excitation method is a new advanced detection method. In this method, the observation frequency and of emission electrode must be reasonably selected according to the actual geological conditions of coal mine roadway to obtain the apparent frequency with adequate Induced Polarization (IP) information of geological anomalies and improve the measurement accuracy of the instrument. This paper completed the simulation of apparent frequency varying with the observation frequency and Cole-Cole model parameters with MATLAB software. The results show that the key to selecting the observation frequency mainly depends on the charge and discharge time constant .Then the paper analyzed the effect of the measured apparent frequency on the measurement accuracy. According to time constant values​​ of geological conditions in coal mine roadway, considering the efficiency and electromagnetic coupling effects on the measurement, it is best to select the observation frequency within a frequency range of 0.05~0.1Hz and the frequency ratio coefficient of 13 or 15. Now apparent IP effect is obtained.
Study on Reservoir Fracture Prediction of Wumishan Formation in Renqiu Buried Hill
Authors: Zhou Han Guo , Li Jing
Published: October 2014

The third segment of Wumishan formation in Renqiu buried hill was taken as an example, based on crustal stress obtained by acoustic logging information and by use of rock cut fracture criterion and spread fracture criterion, the fracture distribution in the researched area was studied. The results showed that the degree of fracture development is high in the southern fault, northern fault and eastern fault in the researched area, south-central area is the compared developed fracture zone, the central and the central-western areas are the slightly developed fracture zones, while the north and northeast are the less developed fracture zones. At the same time, it is found that the fault has a significant impact on distribution of fractures.
The Study of Identifying Deformed Coal by Logging Curve on Coalbed Methane Development
Authors: Xu Qi Lu , Huang Wen Hui , Yang Yan Hui , Liu Bei
Published: October 2014

Coalbed methane (CBM) which is a kind of efficient and clean unconventional natural gas will be the alternative energy in the future. Deformed coal which is harmful to CBM development was studied with logging curve. The logging curve characteristics and template which can be used directly had been put forward and applied in Shizhuang Block, Qinshui basin, China: (1) Deformed coal has low resistivity, low bulk density, high interval transit time, expanding well diameter and increasing neutron porosity in logging curve. (2) 3 type coals (undeformed coal-transitional coal - deformed coal) are arranged from lower-left corner to top right corner in order in AC and LSD diagram. (3)The deformed coal proportion of No.15 coal is significantly higher and it maybe the main restricting development factor. (4) The northeast and southwest of Shizhuang block have more deformed coal.
The Analysis of Morphology Characteristics of Iron Plaque on the Roots of Carex cinerascens
Authors: Liu Chun Ying , Gong Xiao Feng , Yang Ju Yun
Published: October 2014

The physico-chemical properties of iron plaques formed on the root surfaces of Cmarex cinerascens under laboratory conditions were determined using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectrometry (EDS) analysis. Iron plaques were present as an amorphous coating on root surfaces with an uneven distribution. EDS analysis showed that iron plaques were composed of Fe , Si, Al and lesser amounts of Ca in plaqued root surfaces.
Predicting the Compressive Strength of Cemented Tailings Filling Body Based on GA-BP
Authors: Liang Lu , Qin Shuai
Published: October 2014

Taking the filling tailings of Gangli iron mine as the experimental slurry, this paper use the orthogonal design method to design the experimental scheme to study the influencing rules of cement-sand ratio, mass concentration and curing period to the compressive strength. Use the variance analysis to test the results and the adaptive neuro-fuzzy inference system to establish a prediction model of compressive strength. The results showed that the cement-sand ratio was the most important influence factors on compressive strength and those factors have similar influence. The GA-BP model prediction has high accuracy rate of 95.1% and provides an effective model and method for prediction of compressive strength of cemented tailings backfill.
Progress in Molten Blast Furnace Slag Treatment Using Dry Centrifugal Granulation Technology
Authors: Zhu Jia Bin , Wang Shu Zhong , Luo Ming
Published: October 2014

The molten blast furnace slag (BF slag) is discharged at the temperature of about 1400-1550 °C, which contains a large amount of heat. At present, water quenching is the main technology to treat the BF slag, but this method not only consumes a huge amount of water, but also fails to recover the waste heat. Compared with water quenching, the dry centrifugal granulation has obvious advantages. There is no water consumed and the waste heat can be recovered efficiently, thus this technology has great potential. This technology mainly contains two processes: the granulating process and the heat recovery process. The present development statuses on those two processes are summarized respectively and the prospect of dry centrifugal granulation technology is forecasted.
Research Review and Advance on Shallow Buried Coal Seam Mining Pressure
Authors: Zhu Heng Zhong , Liu Ping , Wang Hua Jun , Tong Zhi Yong
Published: October 2014

In order to research the law of mine pressure and roof control in shallow buried coal seam, based on a comprehensive summary of mine pressure theory, technology application, engineering practice, summarized research results and status, analyzed research shortage, proposed research proposals. The results show that:1“short masonry beam” and “step beam” structure mechanical model and “key stratum in shallow seam theory” has provided theory basis for coal seam roof control shallow guidance. 2Rock and soil (bedrock and alluvium) coupling mechanism, loose layer dynamic structure theory," coal mining, water retention, ecology conservation, subsidence control" optimized portfolio on management theory and technical system of is the required research direction. 3Sichuan, Yunnan, Guizhou, representative of southwest mountainous shallow buried coal seam mining pressure research is conducive to development of mining pressure theory system.
Study on Gas Percolation Motion Law in Coalfield Outcrop Fire
Authors: Wang Wen Cai , Lin Jun Sen , Duan Jun , Wei Wen Bin , Chen Shao Xiang , Meng Xiang Tian , Liu Ye Jiao , Wang Ling
Published: October 2014

By analysis the form of gas percolation in coalfield fire, the follow conclusion is obtained : under the influence of natural wind pressure and fire pressure, natural ventilation system of coalfield outcrop is formed automatically during coal spontaneous combustion, which exists in two forms, one is the fresh airflow percolation in caving zone and its pore, the other is coal combustion gases migration movements in cracks after sliding. The fluent numerical simulations show that natural ventilation system in coalfield outcrop fire district is a vacuum ventilation system; From inlet to combustion area air intake line, air pressure and gas percolation on linear relationship, and gas percolation meets Darcy law in the porous medium percolation theory.
Study on Multi-Parameter Quality Evaluation System of Roadway Rapid Excavation
Authors: Li Ji , Li Guo Hui , Wu Xin , Luo Hong Sen
Published: October 2014

Roadway occupies an important position in construction and production of a coal mine. The urgent requirement of evaluation on performance of roadway rapid excavation is emerging with development of various excavation techniques. However, shortages of current definitions and evaluation systems of rapid excavation cause to lack of effective tools in performance comparison between the techniques. The paper presents an excavation quality evaluation system based on the multiple attribute decision making theory, and gives a definition of rapid excavation. The practices show that the system is able to evaluate quality of roadway excavation technology, help companies select the most appropriate excavation method, and promote development of excavation techniques.
Study on Recovery of Lead-Zinc Tailing Ore by Electrochemical Flotation
Authors: Zhou Gui Ying , Li Wen Juan , Chen Yong , Song Yong Sheng
Published: October 2014

The tailing in a large lead-zinc-iron-sulfur multi-metallic mine has rich reservation in variety of metallic minerals. It has been difficult to recover because of all kinds of reasons. The challenges faced by lead-zinc ore beneficiation are, low grade and recovery of lead and zinc concentrate for fine disseminated grain size, high oxidation rate and close intergrowth. This paper presents a Pulp Potential Control Flotation by stages technique to improve the flotation performance of the lead-zinc ores. In the electrochemical potential controlling flotation processing, using DDTC as collector, the separation potential range of galena and sphalerite with pyrrhotite can be achieved. Flotation circuit of lead-zinc-silver tailing ore was achieved.
The Leaching of Copper Oxide Ore in Ammonium Chloride Solution
Authors: Dong Hua Sheng , Yang Jing
Published: October 2014

In this study, the leaching effect of copper oxide ore was investigated using ammonium chloride solution as leaching agent. The effects of temperature, concentration of ammonium chloride, average particle size and stirring speed on the leaching of copper oxide ore were investigated. The leaching rate increased with increasing solution temperature, concentration, and stirring speed as well as with decreasing average particle size. Ammonium chloride solution can therefore be used as an effective leaching agent for copper extraction from copper oxide ore.
Properties of Resistance Spot Welded Joint between Mild Steel and Aluminum Alloy with an Interlayer of AlCu28
Authors: Hou Long Long , Qiu Ran Feng , Shi Hong Xin , Guo Jun Qing
Published: October 2014

Aluminum alloy A6061 and mild steel Q235 was welded using resistance spot welding with an interlayer of AlCu28. The mechanical properties of the joint were investigated; the effects of various welding parameters on nugget diameter and tensile shear load of the joints were systematically discussed. The results reveal that it is effective to weld aluminum alloy and mild steel using resistance spot welding with an interlayer of AlCu28.
Optimized Design and Research on Technology Parameters of Concentric Dual-Tube Steam Injection Horizontal Well
Authors: Liu Hong Qin , Shi Zai Hong , Zhu Jing , Ma Zhen
Published: October 2014

The screen pipe completion is the predominated method for heavy oil horizontal well in Liaohe Oilfield, accounting for 83.4% of the total completions. General steam injection has been used for the horizontal wells, resulting in a better exploitation percentage in heel part but a poorer exploitation percentage beyond 1/3 of the distance from the tiptoe to heel in horizontal well. As the concentric dual-tube steam injection technique for horizontal well has just been developed in Liaohe Oilfield, the related supporting technique is not enough. In this paper, researchers consider achieving horizontal wells concentric dual-tube steam injection optimized design as main goal so that the physical model will be established, and also the calculation methods for pressure, the calculation models for quality, heat loss and tapered string parameters along the wellbore will be provided during the concentric dual-tube steam injection for horizontal wells.
Paraffin Depositing Mechanism and Prediction Methods of Paraffin Removal Cycle
Authors: Wang Li Jun , Wang Wei
Published: October 2014

This paper explains the mechanism of oil well paraffin deposit. The paraffin deposit velocity has a closed relationship with the temperature distribution of the well, the production of the well , and the roughness of pipe. This paper quantitatively calculates the speed of paraffin deposit of oil wells on the basis of certain assumptions, deduces the quantitative calculation method of paraffin removal cycle based on laminar flow model and provides a quantitative basis for determining the oil well paraffin removal cycle on time.
Research and Application on Homogeneous Acidification to Enhance Producing Degree of Horizontal Wells
Authors: Long Hua
Published: October 2014

The homogeneous acidification technology for Horizontal well is developed to solve the problem of serious pollution in near wellbore area owing to long-time mud soak and large contact area of injected fluid. It not only reduces cost, but also improves acidification efficiency and controllability of horizontal wells. Through field experiments, the technology has got great achievements on eliminating well pollution and increasing productivity.
The Non-Darcy Flow Mathematic Model with Fluid-Solid Coupled of Fractured Vertical Well Pattern in Thin Inter-Bedded Reservoirs
Authors: Gao Ying , Zhu Wei Yao , Yue Ming , Li Ai Shan , Ma Shou
Published: October 2014

Thin inter-bedded low permeability reservoir is sand layer alternating with mud layer and seriously longitudinal heterogeneous. Fluid flowing in this reservoir presents non-linear seepage characteristics. The dynamic models of porosity and permeability were deduced by the concept of bulk strain. Based on flow field partition principle, oil flow field of overall fractured cross-row well pattern could be divided into four units. Each unit could be divided into three regions with different flow mechanisms. Considering non-Darcy flow and fluid-solid coupled, a mathematical model was established for overall-fractured well pattern in thin inter-bedded reservoirs. The results show that production of well pattern with fluid-solid coupled effect is less than that without. Production of thin inter-bedded reservoir grows with the increase of the ratio of net pay thickness to gross thickness (NTG). With increasing semi-length of hydraulic fracture, production of overall fractured well pattern increases with decreasing increment. The more starting pressure gradient, the smaller production of well pattern in thin inter-bedded low permeability. When the starting pressure gradient exceeds 0.01MPa/m, it influences the production remarkably.
Preparation and Photocatalytic Properties of the Chrome Doped Nano-TiO2 Emulsion
Authors: Li Ling , Zhang Hua Yan , Li Xiao Wei , Zhang Wen Ming
Published: October 2014

Chrome doped nanoTiO2 transparent hydrosol was synthesized by a complexation-controlled hydrolysis method at room temperature. The absorbance spectrum and phase structure of samples were characterized by UV-Vis spectrophotometer, and X-ray diffraction, respectively. The photocatalytic activity by degradating acid red 3R dye was studied, and the results indicated that when nanoparticle doped with 0.5% Cr, the degradation rate exceeded 96% for 60 min under the sunlight.
Unconventional Gas Development and Prospect in China
Authors: Liu De Xun , Wang Hong Yan , Zhao Qun , Liu Ying , Dong Lei
Published: October 2014

Many countries in the world begin to attach great importance to the utilization of the unconventional gas. The resources of unconventional gas in China are abundant. The development of unconventional gas is still in the early stage. Tight gas enters large scale and commercializing stage. Shale gas is in the initial stage of commercialization. There are mainly three challenges need to confront, uncertainties of unconventional gas resources, key technology with low cost and environmental pollution. So in the future, resource evaluation, engineering technologies and environmental technologies need to be strengthened in China. Tight gas is the most realistic resources to develop in China and the development and utilization of shale gas is the most anticipated. In the next ten or twenty years, the production of unconventional gas in China will increase considerably and play a major role in national hydrocarbon resources.
Dosing Concentration Design of Chemical Anti-Scale in the ASP Flooding of Lamadian Oilfield
Authors: Ren Cheng Feng
Published: October 2014

Aimed at the analysis of the ion changes of the North east block in Lamadian oilfield asp flooding field in different period, we puts forward a new and more effective anti-scale agent combined with actual situation on site and the design method of the drug concentration. By combining the extraction liquid ion anti-scale indoor simulation experiment, the changes of different scale anti-scale agent dosing concentration during the period of experience formula. And the north east block in Lamadian oil field, the application of asp flooding experiment, achieved good anti-scaling effect, because of the scale pump inspection cycle to achieve an average of 300 days or more.
Anti-Anxiety Effect of Schisandra chinensis Baill Lignans on Mice in Elevated Plus Maze Test
Authors: Jiang Tao , Fan Xin Tian , Wang Chun Mei , Chen Li Mei , Sun Jing Hui , Sun Wei Jing , Chen Jian Guang , Li He
Published: October 2014

Elevated plus maze was used to establish an animal anxiety model to investigate the anti-anxiety effect of Schisandra Chinensis (Turcz.) Baill lignans (SCL). OE, OT, CE and CT were observed, and based on them, the ratio of OE (OE%) and the ratio of OT (OT%) were calculated, respectively. It was considered that the fewer the OE was and the shorter the OT was, the more serious the anxiety of mice was. The results showed that compared with those in the control group, both OE% and OT% presented an increasing trend in the different dose SCL groups, indicating that SCL has an anti-anxiety effect; there were significant differences in the anti-anxiety effect between 70 mg/kg SCL and 140 mg/kg SCL groups, and the control group, but no difference in it between 35 mg/kg SCL group and the control group, indicating that the anti-anxiety effect of SCL may be dose-related.
Profile of Phytochemicals and Antioxidant Activities of Different Solvent Extracts of Cumin Seeds
Authors: Zhang Liang Liang , Feng Sai Sai , Xu Jian Guo
Published: October 2014

The effects of extraction solvents (methanol, ethanol, acetone, ethyl-acetate and n-hexane) on the content of phytochemicals including total polyphenols, flavonoids and condensed tannins, as well as antioxidant activities of cumin seeds were investigated. The results showed that, the acetone extract had the highest total polyphenols, flavonoids and condensed tannins content, and it exhibited stronger antioxidant activities and protective effect of plasmid DNA damage, followed by methanol and ethanol extracts. N-hexane extract is the lowest. Correlation analysis revealed that the content of phytochemicals was well correlated with antioxidant activities of extracts from cumin seeds, which indicates that different solvents had a great influence on the level of total polyphenols, anthocyanins and antioxidant activities of extracts from cumin seeds. Therefore, selective extraction from cumin seeds, by an appropriate solvent, is important for obtaining fractions with high antioxidant activity, which will be useful for the developing and application of cumin seeds.
Review on Clinical Application of Deproteinized Calf Blood Extractive
Authors: Xu Guang Yu , Chen Li Na , Xin Zhuo Yuan , Liu Yu Xin , Li Tan Cheng , An Li Ping , Yuan Guang Xin , Sheng Yu , Du Pei Ge , Li Hong Yu
Published: October 2014

Deproteinized calf blood extractive was bioactive components, including natural amino acids, small peptides, glycolipids, nucleosides and carbohydrates, extracted from calf serum. The main pharmacological activities of deproteinized calf blood extractives contained several vital processes, such as enhancing the uptake and utilization of oxygen and glucose, boosting the synthesis of adenosine triphosphate, promoting the transport of nutrients, facilitating the tissue repair and regeneration. In this article, from the review of the researches on the clinical application of deproteinized calf blood extractives, we concluded that it was worth on clinical promotion.
Superficial CO2 Extraction Oil from Schisandra and the Component Differences Based on Regional
Authors: Zhao Zhen Yu , Zhang Cheng Yi
Published: October 2014

Schisandra Chinensis Baill from four places were extracted with superficial CO2 fluid extraction (SCDE) to explore the component differences based on regional. The condition of SCDE for Schisandra oil are: 18 MPa extraction pressure 6 Mpa , extraction temperature 40 °C and separate temperature for 90 minutes. The Schisandra oil were analyzed by high performance liquid chromatography (HPLC), using the oil yield and the lignin content as the quality index of the Schisandra. The results will be compared with the results of organic solvent extraction. For the extraction of Schisandra oil, SCDE is superior to the organic solvent extraction. The component differences of the Schisandra oil from four different places are obvious, and the oil yield and the lignin content of Schisandra from Changbai Mountain in Jilin Province is the highest.
Isolation, Structure Identification and Cytotoxicity Evaluation of Three Steroids from Boletus edulis
Authors: Liang Qi Lan
Published: October 2014

BEL-7402, HT-29, SPC-A1, U-251 bioassay-guided fractionation led to the isolation of the three active constituents from a wild fungi, Boletus edulis Bull. Ex Fr., which collected from Changbai Montain area. These three compounds’ chemical structures were elucidated on the base of spectroscopic data and comparison with known compounds as 5-cholestene-2,3-oxide (1), β-sitosterol (2), stigmasterol (3). All of the three compounds were extracted from Boletus edulis for the first time, and compound 1 was significantly cytotoxic against the four human cancer cell lines (BEL-7402, HT-29, SPC-A1 and U-251) with IC50 values 6.29, 6.98, 4.79 and 7.54 μM, respectively. Results of the study could supply referencs to the people to find the new drug from the fungus.
The Anti-Oxidative Effect of CCCS from Acia Water Soluble Corn-Cob in Tumor-Bearing Mice
Authors: Song Yu , Li Jing , Wang Kai Yu , Wang Chun Mei , Fu Wen Yi , Zhao Rui
Published: October 2014

Objective To research the relationship between anti-tumor and of corn-cob sulfate polysaccharide in tumor-bearing mice .Methods Xanthosine oxidase and TBA colorimetryr methods were used to assay the contents of blood plasma SOD activities and MDA content. Results CCCS could increased the SOD activity (P<0.05) and decrease MDA (P<0.05) blood plasma of tumor – bearing mice .Conclusion The anti-tumor effect of CCCS may be due to enhanced anti-oxidative capacity in tumor-bearing mice.
Analysis of Rural Life Energy Consumption in Beijing and Suggestions on Coal Reduction
Authors: Zhang Yong Jie , Jiang Jian Yun , Ye Jian Dong , Zhang Fan , Fu Meng
Published: October 2014

Based on detailed investigation and research of rural life energy consumption situation in Beijing, conclusion is made that the current coal-dominated energy consumption pattern has caused environmental pollution and even health hazards. At the same time, low energy efficiency also leads to energy waste. To optimize rural energy consumption structure and improve regional air quality, measures of energy utilization according to local conditions and a balanced energy mix should be taken. Thus realize reduction and substitution of coal.
The Low Carbon Financial Development of Jiangxi Province Based on Low Carbon Economy
Authors: Deng Xiao Zhu , Yang Yu
Published: October 2014

Recently, China has been constantly attacked by haze weather, which is reported to be connected with China’s high coal consumption. This signal indicates that China's development of low energy consumption, low pollution, low-emission-based carbon economy is imminent. Jiangxi province, rich in natural resources, owns large reserves and many kinds of mineral resources. Development of low-carbon economy is necessary to achieve sustainable development. This thesis analyzes the current situation, prospects, as well as the main problems of low-carbon finance in Jiangxi Province by an overview of domestic and foreign scholars’ works on carbon finance research findings, and focuses on putting forward relevant proposals to the development of low-carbon finance Jiangxi.
The Study on Water Conservation in Thermal Power Plants
Authors: Zhou Jian Lei , Fu Yu Yun
Published: October 2014

As the main working fluid pair to transfer energy and cool down the equipment, water is used in a large amount in thermal power plants. It will promote water conservation and resource recycling if the water use is managed effectively in production and the wastewater, which come from circulating cooling water system, the pretreatment in boiler feed water preparation system, desalination system and condensate polishing system, is disposed and recycled well.
Energy Saving Research for Automatic Control Applied in Medium-Small Sized WWTP in Cold Regions
Authors: Dong Li Peng , Xie Tian , Zhang Fang , Ma Sheng Nan , Wang Xiao Ling , Han Xiang Kui
Published: October 2014

Abstract. Combined with the Jiangbei wastewater treatment plant project in Yushu city, Jilin province, China, the design scheme, the system and the function for the automatic control system were summarized. The problems of the great change of water quality and quantity, dissatisfaction of design load and other issues existed in WWTP were solved. From the aspects of control strategy and microbial reaction mechanism, etc., the energy consumption for each processing unit under the control of automatic control system was analyzed. And the system performance and power consumption were evaluated by the WWWP’s operation results. The results show that: the quality of effluent is stable and the energy saving effect is remarkable by the use of automatic control system.
Leaching Behavior of Chlorpyrifos and its Main Metabolite TCP through 5 Types of Soil Columns in Laboratory Conditions
Authors: Sun Bao Li , Shan Hong , Dong Yi Wei , Huang Jin Li , Tong Cheng Feng
Published: October 2014

By applying the OECD soil column method, the leaching behavior of chlorpyrifos and it main metabolite, 3,5,6-trichloro-2-pyridinol (TCP), in five types of saturated soil was compared. The results show the following: (1) Chlorpyrifos can be retained in the five types of saturated soil, and the rate of chlorpyrifos residues in the five types of soil columns are 86.9% (Black soil), 80.3% (Red soil), 77.9% (Limestone soil), 74.7% (fluvo-aquic soil) and 68.9% (Purple soil) of the application amount; (2) No chlorpyrifos was found in the leachate; (3) TCP could fully migrate in the five types of 30-cm-long soil columns and the TCP residues in these columns are 34.4% (Black soil), 29.6% (Red soil), 24.8% (Limestone soil),14.1% (fluvo-aquic soil) and 10.3% (Purple soil) of the application amount; (4) The average concentrations of TCP in the 400 mL leaching solution were from 0.31 μg·mL-1 to 0.23 μg·mL-1; and (5) The Koc and GUS values of the TCP in the five types of soil showed that TCP has a great leaching risk compared with its parent compound of chlorpyrifos.
Study of Comprehensive Performance Evaluation System Based on the Sustainable Development of Modern Enterprise
Authors: Zhang Ying , Xiong Li Hui
Published: October 2014

Traditional enterprise performance evaluation system is to achieve the objective of maximizing corporate value, focusing on the economic consequences, without considering the ecological environment, social responsibility and other non-financial factors, which is obviously inconsistent with the requirements of sustainable development. In this paper, an objective analysis of the existing financial performance evaluation system defects, based on the sustainable development strategy, discussed the performance evaluation of the goals and values, evaluation principles, contents and multiple other aspects of evaluation design, and then build enterprise Performance Evaluation System under the perspective of sustainable development .
Simultaneous Determination of Four Plant Hormones in Soil by Ultrasound-Assisted Ionic Liquid Based Dispersive Liquid-Liquid Microextraction
Authors: Huang Gui Qi , Dong She Ying , Yang Zhen , Huang Ting Lin
Published: October 2014

An ultrasound-assisted ionic liquid based dispersive liquid-liquid microextraction (UA-IL-DLLME) was developed for the determination of four plant hormones (6-benzyladenine (6-BA), kinetin (6-KT), 2, 4-dichlorophenoxy acetic acid (2, 4-D) and uniconazole (UN)) in soil, using high performance liquid chromatography (HPLC)-diode array detection (DAD). Several important parameters including the type and volume of extraction solvent, the volume of disperser solvent, ultrasound time, pH of the solution and salt effect were studied and optimized. Under optimum conditions, the limits of detections (LODs) for the target analytes were in the range of 0.002-0.01 μg g-1. And satisfactory recoveries of the target analytes in the soil samples were 79.3-96.7 %, with relative standard deviations (RSD, n=5) that ranged from 4.3 to 6.7%.
Modeling Environmental Degradation and Economic Growth of Henan Province in Recent 25 Years
Authors: Peng Shun Lei , Wu Nan Nan , Zhao Gan Qing
Published: October 2014

The environmental data (carbon emissions, industrial wastewater discharge, exhaust gases emissions and solid waste production.) and economic data (Per Capita GDP) from 1985 to 2010 was selected to fit environmental Kuznets curve (EKC). The results showed that all the EKC models were significantly fitted (p<0.01), the EKC shapes of Per Capita GDP (PCGDP) between carbon emissions, industrial exhaust gases emissions, and industrial solid waste production were inverted-U shape, respectively. The EKC shape of PCGDP and industrial wastewater was inverted-N shape. This study suggested that Henan Province is still at the stage of industrial development, and EKC turning points of carbon emissions, industrial exhaust gases, and industrial solid waste production have not been reached. Therefore, it is necessary to optimize and adjust energy-depended industry structure to improve environment quality and welcome EKC turning points coming as soon as possible.