bluuebunny/crossref_metadata_2025 huggingface dataset:
Drought Effects on Vegetation Carbon Storage in a Moso Bamboo Forest in Northern Zhejiang: Results of a Throughfall Exclusion Experiment
Authors: Li Qian , Zhou Ben Zhi , Wang Xiao Ming , Ge Xiao Gai , Cao Yong Hui
Published: December 2013

Soil water content is an important factor that influences plant growth of different forests, and then affecting the forest ecosystem carbon storage through the net primary productivity. In this study, a throughfall exclusion experiment was carried out to explore effects of drought on vegetation carbon storage in moso bamboo forest in North Zhejiang of China. The results were showed as follows. The vegetation carbon storage of moso bamboo forest under throughfall exclusion treatment was 14.35% lower than the control plots. And the net CO2 sequestration was 125.07% lower than the control plots. The litterfall in control plots has a tiny drop when compared with the throughfall exclusion plots. These results indicated that drought could reduce forest ecosystem carbon storage and carbon fixation capacity.
Studying Chlorophyll-A Concentration of Bosten Lake (Xinjiang, Northwest China) by MERIS Data
Authors: Liu Ying , Bao An Ming , Chen Xi
Published: December 2013

The Chlorophyll-a (Chla) concentration in Bosten Lake was estimated and mapped using the data of the Medium Resolution Imaging Spectrometer (MERIS) on board the ENVIronmental SATellite (ENVISAT) platform. The fixed aerosol option was chosen and local aerosol optical thickness was used in SeaDAS. The Chla concentration was retrieved by the OC3E algorithm and verified by Field data with high correlation coefficient of 0.79. It showed strong horizontal heterogeneities, which is high at the Huangshuigou region, mediate along the boundary area, and low at the middle of the lake, and decreases from the boundary to the center of the Lake. Its spatial distribution is controlled by the location of inlet and outlet and the type and quantity of discharging around the lake. On sep. 22, 2010, its value is up to 10.98 mg m-3. The minimum, maximum, average and median value of Chla concentration on Aug. 6, 2011 from MERIS data in Bosten Lake is 2.72, 8.93, 3.90 and 3.69 mg m-3.
Application of Fuzzy Weights of Evidence Method in Landslide Susceptibility Assessment Based on GIS
Authors: Wang Zhi Wang , Zhang Jian Hua , Li Duan You
Published: December 2013

This paper deals with landslide hazards susceptibility assessment in the study area from Zigui to Badong counties in TGP reservoir region using RS and GIS technology. The causative factors including lithology, distance to faults, elevation, slope aspect, slope angle, drainage network, distance to river and distribution of plant are derived from geological map, Digital Elevation Model (DEM) and Spot imagery data using RS and GIS technology. The paper analyzes landslide susceptibility assessment using fuzzy weights of evidence method, which could combine knowledge-based fuzzy membership values with data-based conditional probabilities to improve the accuracy of landslide susceptibility assessment. The research result is very coincident with the occurrence of the known landslides in the study area.
The Method and Implementation of Three-Dimensional Laser Scanning Pipeline Scan Data Outliers Excluded
Authors: Li Zhi Liang , Zhang He Sheng , Wu Qi
Published: December 2013

This article is based on three-dimensional laser scanning technology for the modeling of a chemical plant piping, scanned point cloud data with a lot of blunders, comprehensive analysis of the point cloud handling characteristics and stage of maturity of two-dimensional graphics. As a result, a concept of transforming the point cloud data with three dimensional to two-dimensional is formed. Then, according to point and circle positional relationship in the same plane, derived an Algorithm about Gross Error Elimination, finally, programming and achieve it.
Texture Mapping Method of Laser Point Cloud and Digital Image Based on Projection Transformation
Authors: Cai Yun , Li Hao , Wu Ming Fei , Yang Biao
Published: December 2013

In view of the lack of high-precision and high-resolution texture information of three-dimensional laser point cloud, this paper proposes a fusion method of three-dimensional laser point cloud and high-resolution digital images. Firstly the point cloud is transformed to the spherical image of laser intensity by projection. Then the rigorous projection transformation relation between the external digital image and three-dimensional point cloud is constructed easily through spherical image and feature information. Finally the color information of the point cloud is given by digital images. The experiment indicates that the novel method is able to avoid the layout difficulty of control points in the field and operating the three-dimensional data of indoor work, and meanwhile achieve the control of geometric accuracy.
A Study on the Distribution and Correlation of Small Phytoplankton and Nutrients (N, P) in Spring in the Xiangshan Harbor
Authors: Chen Li Hong , Zhu Gen Hai , Qian Jian , Feng Wei Hua , Jin Mao
Published: December 2013

The distribution and correlation of small phytoplankton and nutrients in spring of 2012 in Xiangshan Harbor were studied. The results showed that in spring, the higher values of small phytoplankton cell abundance and nutrient content were distributed in the station from S01 to S06 which were located in the sea area of Tie port and Huangdun port. Meanwhile, the lower values were mainly distributed in the station from S17 to S31 which were located in the sea area of the outer Xiangshan Bay and the sea area around Liuheng Island. From the bottom to the middle to the entrance, the values reduced in turn. The content of N, P in the surface water was higher than that in the bottom water, but the distribution trends were the same no matter in the surface water or in the bottom water. There was significant positive correlation between small phytoplankton cell abundance and nutrient content in the water of Xiangshan Harbor.
Characterization of Chlorimuron-Ethyl Herbicide Degrading Bacteria Isolated from Paddy Soil
Authors: Yin Le Bin , Zhao Liang Zhong , Liu Yong , Zhang De Yong , Zhang Song Bai , Xiao Kai
Published: December 2013

A bacterial strain S5-1capable of degrading chlorimuron-ethyl was isolated from paddy soil using enrichment technique. On the basis of traditional culture characteristics, colony and cell morphology, physiological and biochemical characteristics, type of internal photosynthetic membrane and combined with 16S rRNA gene sequence analysis, the strain was identified as aRhodopseudomonassp.. The optimal temperature and pH for biodegradation of chlorimuron-ethyl byRhodopseudomonassp. strain S5-1were 35°Cand pH 7.0, and the degradation rate reached 87.8% within 10 days under the optimal conditions. The results revealed that strain S5-1could degrade chlorimuron-ethyl efficiently and for further study it could potentially be used as a biological agent for the remediation of soil, water or crops, contaminated by chlorimuron-ethyl herbicide.
Synthesis of Fe3+ Doped Bi2MoO6 Nanoplate and its Performance on Photocatalytic Degradation of Salicylic Acid
Authors: Wang Dan Jun , Zhang Jie , Guo Li , Fu Feng , Yue Lin Lin
Published: December 2013

Fe3+ doped Bi2MoO6 photocatalyst was successfully synthesized via a hydrothermal process using Bi (NO3)3 and (NH4)6 Mo7O244H2O as starting materials. XRD, SEM and UV-Vis absorption spectrum techniques were employed to characterize the phase composition and spectrum properties of the as-synthesized samples. Salicylic acid was selected as a model pollutant to investigate the effect Fe3+ doping on the photocatalytic activity of as-synthesized Bi2MoO6. The experimental results indicated that Fe3+ element doping can enhance the photocatalytic activity of Bi2MoO6 photocatalyst. When the amount of Fe3+ doped in Bi2MoO6 is 0.5%, the photocatalyst exhibits the best photocatalytica activity. The doped Fe3+ doped into the crystal lattice of Bi2MoO6 photocatalyst act as the electron traps and facilitates the separation of the separation of photogenerated electron-hole pairs due to its electron deficient. Thus, Fe3+ doping improve the photocatalytic with great efficiency.
Study of Removing Bacteria and Microcystis aeruginosa by Hydroxyl Radical
Authors: Xu Wei , Yi Rong Jie , Li Jing Jing , Song Jin De , Yi Chen Wu , Wang Hui Juan
Published: December 2013

The 1.5t/h algae and bacteria wastewater with high concentration was treated by hydroxyl radical (OH) produced by a strong ionization discharge. In this paper, the feasibility of kill bacteria and alga by OH was investigated, and effects of OH concentration, treatment time and pollution initial concentration on degrading microorganisms by OH were investigated in detail. The results indicated that the treatment process was effective in the degradation of the bacteria and alga at the initial pH value of 7.1, OH dosage of 2.33mg/L, the initial microcystis aeruginosa concentration of 106/mL and the initial bacterial dosage of 106cfu/mL, the bacteria and alga degradation rate reached 99.99% at 303K after 15min treatment. The results provided a theoretical basis for the OH treatment of microbial contamination in drinking water in large-scale.
Fundamental Research and Demonstration Project of Evaporation Treatment of Wastewater from FGD in Flue Gas Duct
Authors: Jiang Dan Ning , Sha Hai Wei , Gong Guo Hui , Song Jing , Xu Hai Tao , Zhou Chang Cheng , Shen Kai
Published: December 2013

The desulfurization wastewater is a kind of intractable wastewater which comes from the process of wet desulfurization. There are many shortcomings of traditional development methods. Desulfurization wastewater evaporation treatment in flue gas duct as a new processing technology. This approach of evaporating desulfurization wastewater by flue gas is feasible. The feasibility of the demonstration project of boiler flue gas treating wastewater on 4# boiler in Changshu Power Company limited was analyzed; the computational fluid dynamics (CFD) software FLUENT was adopted to simulated the pressure field and velocity field in the outlet flue pipes of air pre-heater. The concrete arrangement mode and the number of the spray lances were determined by calculations. The temperature of the flue gas is tested after the system was put into operation. The results showed that this technology can realize the desulfurization wastewater with zero discharge without hurting the work of electrostatic precipitator. The demonstration project is the first of its kind in domestic power industry; this study provides experiences and references of power plant desulfurization wastewater with zero discharge.
Effect of Super-Hydrophobic Surface on the Corrosion Performance of Copper and Copper Alloys
Authors: Han Jie , Xu Qun Jie , Zhang Guo Li , Li Mei Ming
Published: December 2013

With copper and copper alloys widely used, copper corrosion has already caused huge economic losses. Super-hydrophobic surface treatment, a new kind of corrosion resistant technology, can effectively inhibit metal corrosion. This paper introduces the basic issues and the construction methods of copper and copper alloys super-hydrophobic surface. The effect of super-hydrophobic surface on the corrosion performance of copper and copper alloys is analyzed emphatically. Recent developments of super-hydrophobic surface and the existed technical barriers are also summarized in the paper.
Extraction and Deproteinization of Polysaccharides from Sedum aizoon L.
Authors: Wang Qi Zhi , Wang Na , Chen Zhen Xi
Published: December 2013

Polysaccharides fromSedum aizoonL. were extracted by hot water, ultrasonic wave and enzyme, respectively. Then crude polysaccharides were de-proteined by sevag method, and the process was optimized taking advantages of single-factor and L9(3)4-orthogonal array method. The results revealed hot water method was the most efficient extraction method among the three methods, which the yield of polysaccharides was (2.48±0.7000)%. The optimized de-proteinization process was that the sample was added one of two volumes Sevag reagent (CHCl3-C4H10O (V/V), 3:1), shook for 25 min once, then centrifuged to remove denatured protein and organic reagent. This process was repeated for three times. The protein removal rate and polysaccharide loss rate were (61.28±0.25)% and (29.16±0.19)%, separately. And the process was stable according to verification test, which was significantly higher than reported values in the literature.
Optimum Conditions for Lipase Immobilization on Halloysitum Rubrum
Authors: Deng Tao , Xu Jun Wei , Huang Li , Li Tao , Yu Xu Ya
Published: December 2013

In this study, we use natural halloysitum rubrum as novel support materials to immobilizeCandida rugosalipase. The response surface methodology with a four-factor three-level Box-Behnken experimental design was used to evaluate the effects of immobilization parameters, such as pH (4.0 to 6.0), immobilization temperature (25 °C to 35 °C), enzyme/support ratio (0.1 to 0.3, w/w), and immobilization time (1 h to 2 h), on the activity of immobilized lipase. The optimum pH, temperature, enzyme/support ratio, and time for immobilized lipase activity (376.09 U/g) were 5.17, 29.65 °C, 0.3 (w/w), and 1.63 h, respectively. After 15 repeated uses, the immobilized lipase still retained 80% of its initial activity, which indicates good reusability.
The Influence of Glucose on Growth and Lipid Production under Heterotrophic and Mixotrophic Conditions for Monoraphidium sp. FXY-10
Authors: Zhao Yong Teng , Zhao Peng , Li Tao , Wang Lin , Yu Xu Ya
Published: December 2013

The impact of glucose on the growth under heterotrophic and mixotrophic conditions for Monoraphidium sp. FXY-10 as well as its lipid content was investigated through the Andrew equation. The results demonstrated that the subsaturation constant of Monoraphidium sp. FXY-10 under heterotrophic condition to glucose was smaller than that of Monoraphidium sp. FXY-10 under mixotrophic condition, indicating that Monoraphidium sp. FXY-10 is more sensitive to glucose under heterotrophic condition. Furthermore, the biomass productivity, lipid productivity and lipid content of Monoraphidium sp. FXY-10 all reached the peak at 10 g L-1 of glucose concentration under both heterotrophic and mixotrophic conditions. Compared with other Chlorella sp., the Monoraphidium sp. FXY-10 represented higher lipid productivity (131.79 mg L-1 d-1).
Refining the Very Important Value of Mass to Charge Ratio from Traditional Chinese Medicine' Nature Data
Authors: Nie Bin , Du Jian Qiang , Wang Zhuo , Yu Ri Yue , Xu Guo Liang
Published: December 2013

The research for Chinese herbs warm and cold natures classification is a significative thing for clinical. The paper put forward refining the very important value of mass to charge ratio (M/Z) from Traditional Chinese Medicine' Nature data using orthogonal signal correction-orthogonal partial least squares-discriminant analysis (OSC-OPLS/O2PLS-DA) after normalization. The first , data standardizing for the metabolites sample spaces data; The second, Reducing dimensions for the metabolites sample spaces data using OSC; the third, distinguish TCM' nature using OPLS/O2PLS-DA ;The fourth, gain the very important value of Mass to charge ratio for TCM' nature; The fifth, According to the necessary of the research, repeat the fourth step and the fifth step, and refine the M/Z.The model was proved to be feasible and effective after tested with 6 types warm natures herbs, 6 types cold natures herbs.
Study the Relationship between Chemical Components of Complex Prescription and Blood Flow of the Ileus Rats
Authors: Nie Bin , Du Jian Qiang , Yu Ri Yue , Wang Zhuo
Published: December 2013

Explore the relationship between chemical components of complex prescription and blood flow of the ileus rats, and predict the best compatibility. Method: first of all, experimental design. with reference to the original formula, the herbal medicines in a prescription include Rhubarb, Mangnolia officinalis, immature bitter orange, mirabilite designed nine formula based on Mixing uniform design, obtain chemical components of complex prescription and intestinal blood flow data; Secondly, explore important variables and interaction affect the information; The third, mathematical modelling. Finally, the target optimization. Results: there are interactions in the chemical components of complex prescription, and have the best compatibility. Conclusion: conjunctive use correlation analysis, partial correlation analysis, orthogonal partial least square analysis, Partial least-squares Regression, Optimal Method to study the compatibility of the dachengqi decoction is feasible and effective.
TiO2-Based Nanotubes Modified with Nitrogen: Synthesis, Characterizations, and Photocatalytic Activity
Authors: Yan Cai Yun , Sun Qian Nan , Chang Qing , Peng Yen Ping
Published: December 2013

This study employs a rapid, energy frugal and environmental friendly method to synthesize nitrogen doped titanate nanotubes (NTNTs), and uses TEM, XRD, Raman, Nitrogen adsorption-desorption isotherms analysis, and UV-vis spectroscopy to characterize the obtained NTNTs. TEM results indicate that NTNTs retain a tubular structure with a crystalline multiwall and have a length of several hundred nanometers after nitrogen doping. XRD findings demonstrate that the crystalline structure of NTNTs was dominated by anatase, which is favored for photocatalytic application. The Ti-O-N linkage observed in the XPS N1s spectrum is mainly responsible for narrowing the band gap and eventually enhancing the visible light photoactivity. After sintering at 350 °C, the UVvis absorbance edges of NTNTs significantly shift to the visible-light region, which indicates N atom doping into the nanotubes. Photocatalytic tests conclude that the NTNTs shows good efficiency with visible light response.
Sol-Gel Synthesis and Characterization of TiO2-Based Photocatalyst and its Photoactivity Research
Authors: Qi Xue Mei , Zhu Xin Yuan , Wu Jiang , Wu Yu , Luo Han Cheng
Published: December 2013

The TiO2-based photocatalysts have been synthesized by using sol-gel process and their photocatalytic activities were studied by the degradation of methylene blue (MB). It was shown that the calcination temperature has great influence on the crystalline phase transition of TiO2. For all the samples (Ag-doped and undoped TiO2photocatalysts) calcined at 573K, only anatase phase was observed from XRD diffraction spectra and the intensity of peaks is weak. After the calcined at 773K, a mixture of anatase-rutile phase appeared. The contents of rutile phase were about 85% and77% for undoped and Ag-adopted TiO2photocatalysts.There were only rutile phases for all the TiO2photocatalysts calcined at 973K observed from XRD diffraction spectra. Magnetically stirring time of A solution before added B had no obvious effects on the polymorphs transition of TiO2.
Monitoring of Calcium Sulphate Phase Transformations Using High-Temperature X-Ray Diffraction
Authors: Gazdič Dominik , Hájková Iveta , Magrla Radek
Published: December 2013

Within the task the so called high-temperature X-ray diffraction analysis (HT-XRD) was used in the field of sulphated binders. Gypsum or calcium sulphate CaSO4.2H2O is the basic raw material for the sulphated binder production. As it is known by gradual warming of gypsum its different phase transformations can be obtained which significantly differ in its properties. Using this analysis identifications of temperatures of particular phase transformations in the CaSO4·xH2O system can be performed.
Microstructure and Mechanical Property of 22MnB5 High-Strength Steel
Authors: Wei Ao Ran , Liu Hong Wei , Chen Jing Fan
Published: December 2013

We have mental heat treatment for 22MnB5 steel with seven different experimental schemes and have mechanical property test on the seven steels. Then the microstructure and mechanical property of treated steels are studied, and the results show that 300°C is the optimum preservation temperature, at which we can get the optimum specific elongation of 22MnB5 steel. The tensile strength of steel thermal insulated at 300°C for 3 minutes is better than that of steel tempered at 300°C for 3 minutes, while as for specific elongation , the latter one is better. And we can also get homogeneous lath martensite after die quenching. The experiment lays foundations of the actual production process of hot forming.
Black Carbon and its Applications in Environmental Protection
Authors: Yu Zhen Liu , Jie Min Cheng
Published: December 2013

Black carbon, which is taken the sources from the products of the incomplete combustion or pyrolysis of organisms or volatile components of fossil fuels, has a large specific surface area and strong adsorption capacity for organic matters. Nowadays, black carbon has been widely used as the adsorbent or passivating agent in environmental pollution control. However, black carbon is a hydrophobic non-polar adsorbent, which results in the difficulty of dispersing in the solution without modification. Thus, in order to increase the surface oxygen-containing groups, the modification should be done before black carbon used to adsorb or inactivate heavy metal. The concepts, sources and application status of black carbon in environmental pollution control are summarized. Meanwhile, the modification methods and the application prospect of black carbon are put forward.
Alumina Nanofibers Prepared by Coupling Sol-Gel with Electrospinning Method
Authors: Zhao Zhi Hua , Cheng Yu Shan , Liu Qian , Zhou Yuan Yuan
Published: December 2013

The flexible alumina nanofibers were prepared by coupling sol-gel with electrospinning method. The as-spun composite nanofibers were obtained by electrospinning a mixture of the pseudo-boehmite sol and polyvinyl pyrrolidone (PVP) ethanol solution. SiO2 was added in the pseudo-boehmite sol to retard the phase transformation of the fired fibers. Upon firing and sintering under carefully pre-selected heating schedule, the crystalline alumina nanofibers were obtained. Tools such as TG-DSC, X-ray diffraction, transmission electron microscope together with scanning electron microscope were employed to characterize the evolution of the ceramic phase and morphological features of the pseudo-boehmite sol and composite fibers before and after fired. The experimental results show that the flexible fibers with uniform diameter of about 400-700 nm as well as no defects such as cracks or holes even calcined at 1300 °C can be prepared by marriage of electrospinning with sol-gel processing.
Effect on JNK/MAPK Pathways in the Damage of Rat Testicle Sertoli Cells Induced by DBP
Authors: Li Huan , Zhang Yi , Wang Peng Min , Yu Jing Hong
Published: December 2013

Dibutyl phthalate (DBP), an accepted environmental endocrine disrupting compound, which has anti-androgenic effects,is widely used in many industries such as plastics, pharmaceuticals, plastic food packaging materials. This article intends to study the effect on JNK/MAPK pathways in the damage of rat testicle sertoli cells induced by DBP via vitro test. Testicular sertoli cells of rates were incubated by medium containing DBP in different concentrations (0μg/ml,1μg/ml,10μg/ml, 100μg/ml). after culturing for 24 hours the expression of vimentin was detected by immunofluorescence; the expression of vimentin mRNA detected by RT-PCR; Western blot analyzed the expression of related protein of JNK/MAPK pathways in sertoli cells. The results showed that vimentin highly express in sertoli cells and gradually decrease with the increase of poisonous doses. The mRNA expression of vimentin in each exposure group has a downtrend with the increase of does. The total protein of JNK and P-JNK protein increased gradually in a dose effect manner. These results suggested that DBP can decrease the expression of vimentin mRNA, the decrease of which was regulated by JNK/MAPK signal transduction pathway that activated by DBP, and then induced the apoptosis of Sertoli cell.
Sorption and Retardation of 90Sr2+in Loess Media
Authors: Yuan Jian Ying , Liu H.F. , Wang D.
Published: December 2013

Non-radioactivestrontium(Sr2+) was used to investigate the migration of radioactivestrontium in loess. The sorption and retardation characteristics of strontiumin loess were studied by batch tests and column experiments. The experimentalresults showed that the equilibrium sorption data for Sr2+ was fitting well tothe Freundlich isotherm models(r2= 0.97). And the Rd obtained frombatch experiment was larger than Rd determined by column test. The resultsindicated that Rd values derived from column tests are more accurate toevaluate transport of radionuclides in contact medium.
Heat Treatment of Fire Explosion Hazard Analysis and Countermeasures
Authors: Wang Yue , Song Wen Hua , Cheng Bao Dong , Song Xiang Jie
Published: December 2013

Shielding gas used during the heat treatment has Explosion Hazards,Quenching oil has fire danger.This paper based on their hazardous properties,established the model of HAZOP method combined with fault tree analysis, combined with a heat treatment plant in tianjin to analyze its risk and gives countermeasures.
Hardware Design of an Environmental Monitoring System Based on Wireless Sensor Networks
Authors: Liu Yuan Yuan , Yu Xiao Fen , Zhao Da
Published: December 2013

An environmental monitoring system based on wireless sensor networks can monitor in real time of toxic gases which exist industrial emissions from the industrial field. It focuses on the hardware structure of the system, and some specific design was carried out against problems of high-temperature and uneven distribution of gas concentration in industrial field: by the redundant design of a single-node to solve the problem of uneven distribution; by adding semiconductor constant-temperature apparatus in the system to overcome the problem of high-temperature. Experimental results show that the system could meet the requirements of monitoring in real time of toxic gases in adverse industrial field. Consequently, it has a high practical value.
Study on the Characteristics of Nutrient Distribution of Surface Sediments under the Influence of Human Activities in Honghu Lake, Jiangxi Province
Authors: Kong Ran Ran , Zhang Ming Li , Yang Hao
Published: December 2013

The vertical distributions of nutriment elements (TN, TP and TOC) in the columnar sediments of sampling site in Lake Hong of Jiangxi were determined on the basis of 210pb dating.In order to investigate vertical distribution characteristics of nutrient elements and the sequence feature changes over time,analyze the impact of human activities on the Lake district environment.The method of 210pb dating was used to derive accumulation rates of 0.407g/cm2.a-1,The results showed that the contents of all the elements lowered continuously with the increase of the sediment depth.The historical profiles of Hong Lake showed that TOCTN and TP mainly enriched in 0-37cm ,and presented simultaneously changeable trends. 1862~1953, TN, TOC and TP are in a relatively stable trend, human activities in this stage have less disturbance to the environment and natural factors play a major role, Lake is without pollution to the state, belonging to II~IIIstandard, the overall ecological environment of lake is stable. 1953~1992, TN, TOC and TP are in the rapid increase stage,and the vertical variation of amplitude became enlarged.In this period, the increase of human activity,especially the agricultural activities,resulted in nutrient element content higher.Lake is being III ~ IV standard.The lake eco-environmental issues began to emerge. From 1992 to 2011, the nutrient content is with high volatility, human activities is the main factors affecting the lake environment, organic index and organic nitrogen pollution is IV level standard,the lake environment problem aggravate.
Study on Environmental Amenity of Changchun Based on Regression Analysis
Authors: Fu Bo , Xie Zhen Hong
Published: December 2013

Because of the continuous deterioration of urban ecological environment and the increasingly scarcity of comfortable environment, amenity became the core goal of human residence and urban development. To study the environmental amenity of Changchun, datas of different sources and scales were integrated and processed synthetically by taking GIS as technical means and the method of Principle Component Analysis as the methods to obtain the weights of the impact factors. The general score of the environmental amenity of the study area was 0.415 and the areas with higher scores than the average level accounted for 39.85%. Meanwhile, the amenity satisfaction scores of the 46 streets were received by the sample survey of the resident subjective satisfaction of the study area. The functional relationship between the subjective satisfaction score and the objective indicators were obtained by the regression analysis method. The results showed that the factors contributing greater to improve the resident subjective satisfaction were the vegetation cover and the proximity to the cultural facilities. Also, a quantitative reference to improve the subjective satisfaction of the environmental amenity was provided in the new urban environmental conditions of the future.
Application of Earth Conductivity Detector to Leakage Detection of Seawall
Authors: Qin Peng , Li Jing Wei , Qin Zhi Hai , Zhou Jian Fen
Published: December 2013

Leakage detection of seawall is important for assessing seawalls present situation, appraisal and strengthening the protection and provide quantitative basis for project engineering management. These papers set forth the work principles of EM34-3 Type earth conductivity detector; and analyzed the detecting results of seawall located on Qiantang River. The research results show that the seawall safety grade is good, and this technology is suitable to assess seawall safety with a good reliability.
Distribution Characteristics of the Remaining Oil of Putaohua Oil Layer in Pubei Oil Field of Songliao Basin
Authors: Liu Zong Bao , Gong Xun
Published: December 2013

A comprehensive analysis has been made for the remaining oil of Putaohua oil layer in Pubei oil field of Songliao basin by using core and logging and dynamic data. It is considered that it’s distribution is controlled by positive structures, lateral fault seal, sedimentary microfacies and pattern matching of ‘fault-sand’. The forward fault trap and the top of internal micro-structures on the edge of fault block control the position of the enrichment of remaining oil; lateral fault seal affects the level of the enrichment of the remaining oil; the underwater distributary channel of shallow water delta and the main sheet sand constitute the remaining oil reservoir unit; pattern matching of fault and sand determines the rich layer of remaining oil. On the basis of the above study, four types of remaining oil has been established: fault edge screened type, top of micro-structures type, injection-production imperfection type and anisotropism of sheet sand. Different programs for different situations are proposed: inclined well for fault edge screened type, infilled straight well for top of micro-structures type, horizontal well for injection-production imperfection type, well fracturing for anisotropism sheet sand.
Analysis of High-Frequency Sequence Stratigraphy Architecture of Putaohua Oil Layer in Sanzhao Sag of Songliao Basin
Authors: Li Zheng , Ma Shi Zhong , Sun Yu , Zhang Jin Yan
Published: December 2013

Using high-resolution sequence stratigraphy theory and its technology, based on 22 well cores and 4 256 logging data, interface types and characteristics of different grades the base-level cycle in Putaohua oil layer of Sanzhao Sag was systematically analyzed, and Putaohua oil layer is divided into 1 medium-term base level cycle, 4 short-term base level cycles, 8 super-short-term base level cycles, established high-resolution sequence strata framework, and proposed sequence stratigraphy model of middle super-short-term base level cycles meridionally grado-thin and up to vanish with syndepositional structure lifting control in the south of Putaohua oil layer. Sandstone is offlap Pinch-out in the upper of Putaohua oil layer, and Sandstone is onflap Pinch-out in the under of Putaohua oil layer from north to south.
Favorable Geological Conditions for Paleozoic Shale Gas Accumulation in China
Authors: Jing Tie Ya , Zhang Jin Chuan , Nie Hai Kuan , Jiang Sheng Ling
Published: December 2013

China has huge Shale gas resources potential. The exploitation of shale gas can effectively reduce atmosphere pollution and relieve the energy shortage in China. The thickness, burial depth, organic richness and thermal maturity of Paleozoic shales in the different regions are studied and the favorable areas of shale gas are depicted. The most favorable formation for shale gas accumulations in Lower Paleozoic are Longmaxi and Niutitang shale and the favored regions mainly distributed in Yangtze area in southern China, the Tarim Basin, etc. The distribution of Upper Paleozoic shale gas mainly developed in Taiyuan and Shanxi formations in the Ordos Basin and North China. Through the comprehensive comparison, it is summarized that Yangtze area, especially in the northeast and southeast of Sichuan Basin, the west of Hubei province and the east of Chongqing province are the preferred choices for shale gas exploration.
Classification and Evaluation of Oil Reservoir of Fuyang Formation in Xingbei Area
Authors: Guo Peng , Ma Shi Zhong
Published: December 2013

Based on the Fuyang formation in Xingbei geological background research, to understand the basic structure of the study area conditions and the forming conditions. Combined study area forming conditions analysis, the study area as a whole basic understanding of oil-water distribution. Finally, the study area production test data, logging data interpretation and analysis of oil-bearing core, and thus the oil reservoir in the study area were evaluated in the study area in order to find favorable block.
Hydrocarbon Accumulation Model of Four Blocks in Qijia-Gulong Depression
Authors: Fang Xi Rui , Ma Shi Zhong
Published: December 2013

Qijia-Gulong concave slope area is a succession nose shape structure slope as well as Qijia-Gulong depression of Songliao basin developing process, Putaohua formation is most important contains oil goal formation in this area center lower part to contain oil combines, since long ago, the forming law is not unclear to be recognized, based on the theories and means of sedimentology, sequence stratigraphy, petroleum geology and so on, from the fine research of palaeostructure, sequence frame work sedimentary facies, forming period, hydrocarbon water distribution, trap type, and generalize on hydrocarbon forming pattern and enrichment law, pointed out new objects and orientation of exploration and development, had important instruction significance of hydrocarbon genesis of Qijia-Gulong depression.
The Regulation Mechanism Study on Mineral Resource Reserves
Authors: Ren Zhong Bao , Liu Tian Ke , Cao Ying Gui
Published: December 2013

Deposit reserves have a role in regulating the development and utilization of mineral resources. Its core is to secure the supply of mineral resources by selecting the right sequence and optimizing the layout of mineral resources E&D. this paper devised a measuring model for the deposit reserves . Following the principle of store up in bumper years to be in ready for hard ones, and considering the particularities of deposit reserves. we concluded that: For the advantage of mineral resources, regulating reserve can realize resource advantage to economic advantage, therefore the reserve object should focus on mining right reserves. Finally, we incorporated three recommendations for the nations effort in deposit reserves: make special plans for deposit reserves, establish an organizing and leading body for deposit reserves and structure a mineral reserve system.
Numerical Analysis of Geo-Grid to Enhence Stability of Tailings Dam
Authors: Zhang Yong Li , Zhang Yao , Ma Yu Lin , Su Chang , Liu Xiang Feng
Published: December 2013

The stability of tailing dams has recently become a hot issue on the engineering, and geo-synthetics curing processing applications are widely used. The influence of the tailings dam stability of geo-textile grid by calculating and analyzing with numerical simulation is studied. It reveals the mechanical behavior and the inherent law of the dam under different physical properties and different conditions of geo-grid. The force of reinforcement and the change law of ultimate load under different working conditions are systematically simulated by FLAC, and then analyze the formation process of sensitivity and fracture plane that influenced the ultimate load. The result shows: The failure surface is not such concentrated after joining the geo-textile grid and the safety factor increases 60%. The stability of the dam structure of tailing dam is effectively improved. Research has provided the basis for the structure stability of tailings dam's designing.
AE Characteristics of Overburden Rock over Metal Mine Goaf under Mining Layout
Authors: Zhao Kang , Jia Qun Yan
Published: December 2013

Based on extremely complex geological characteristics of metal mines, a mining model was built up, and from the micro - meso - macro point of view, relationship between rock AE and failure characteristics of overlying rock mass was studied and AE is divided into four stages. From the view of AE energy and distribution, the generation location, shape and size of caving of overburden rock was predicted. Through studies on the difference of goaf size, the author obtained the displacement variation and failure characteristics of metal mine overburden rock under tectonic stress, self-weight stress and dynamic mining conditions.
Acoustic Emission (AE) Forecasting Rock Burst Key Technology
Authors: Dong Guo Wei
Published: December 2013

Acoustic emission (AE) technique is a trend of non-contact technique forecasting coal and rock dynamic disaster.Coal and rock AE propagation attenuation exponent function on different AE frequencies, different quality factors and different propagation distance are acquired by theory and numerical simulation and actual experiment; the effect of AE sensor installation manners on coal and rock surface , coal and rock bottom and wave guide are studied, the results show that the effect of AE sensor installation manner on wave guide is better than on coal and rock surface ,equivalent to installation manner on coal and rock hole bottom. Based on above study results, actual rock bursts are successfully forecasted.
Experimental Study on Deep Borehole Pre-Cracking Blasting of Drilling through Strata at Low Permeability Seam
Authors: Liu Jian , Le Qian
Published: December 2013

In the process of roadway excavation in the low permeability outburst coal seam, with drilling through strata in the bottom drainage roadway extracting coal seam gas of control area. In order to improve extraction effect, the method that deep borehole pre-cracking blasting is used to increase the permeability of coal in the drilling through strata seam segment is proposed. The calculation formula on crushing circle and crack circle radius of deep borehole pre-cracking blasting are derived, and the effective loosening radius of blasting is calculated in theory, the research achievements are applied to field test, the test results show that deep borehole pre-cracking blasting permeability improvement technology is carried out in the drilling through strata of the low permeability outburst coal seam, the permeability of coal seam is improved by 180 times, the gas extraction scalar is raised by 8-10 tomes, during the process of roadway excavation, gas concentration of the working face is 0.2%-0.3%, and tunneling footage is increased by 2 times.
Regional Distribution of Hazardous Elements in Late Permian Coal Southern Sichuan, China
Authors: Luo Yang Bing
Published: December 2013

In this paper, the regional distribution of six hazardous elements (S, Cl, Hg, Se, F and As) in Late Permian coal in southern Sichuan, China, is discussed based on the differences of the sedimentary environment. Based on the different sedimentary facies, the sedimentary environment of the southern Sichuan coal basin can be divided into three areas: fluvial or swamp (AreaI), tidal flat (AreaII) and marine carbonate platform (Area III). The content of F, Hg, Cl and Se is lower in the entire southern Sichuan coal field as compared to the average value of these hazardous elements in Chinese coal. The element S is concentrated in coal in Area III and the upper part of Area II. The element As is concentrated in coal in the upper part of Area II.
Application of Chelating Collectors in the Flotation of Copper Minerals
Authors: Xiong Fei , Li Yan Jun , Zhang Zheng , Du Guo Fang , Lan Yao Zhong
Published: December 2013

The application of new chelating reagents on the flotation of copper minerals has been paid much attention in recent years. These collectors have successfully extracted the copper minerals from the low-grade refractory ores, and one of the most important collectors is the alkylhydroxamate-based chelating reagent which shows the excellent flotation performance to the copper oxide minerals. Furthermore, the mixture of various chelating reagents can recover the copper sulfides and oxides simultaneously from the complicated copper ores, which is attributed to the synergy among collectors. Thus we conclude that it is an important flotation method by using chelating collectors in conjunction with other traditional collectors, by which the synergy can break through the limitation of single reagent and enhance the flotation efficiency.
Sedimentary Facies Influence Oil Production with Grey Correlation Degree Method
Authors: Wang Yong Ping , Wang Feng Jiao , Tang Hui Min , Jiang Wen Chao
Published: December 2013

The sedimentary facies is the combination of the sediment which has some rules of lithological and construction characters and paleontological evidence. It characterizes the source direction and the strength degree of water dynamics. As the developmental situation of the reservoir of different sedimentary facies is different, the permeability, porosity and oil saturation is distinctive. The production is related to the sedimentary facies, this lead to the different production capacity of different sedimentary facies. The oil-producing capacity varies with the sedimentary facies of the reservoir. Therefore, different kinds of data of the reservoir must be analyzed with proper methods. This passage, using the single layers data and the well history data of 244 wells in M block of Daqing Oil Field, through the method of grey relation analysis theory, analyzes the influence of the sedimentary facies to the productivity of the production well. And the weight of different sedimentary facies to the oil productivity of the production well is confirmed. Also, the oil productivity of the production well is quantified.
Synthesis and Properties of Solidied Inhibitors
Authors: Yin Cheng Xian , Zhang Juan Tao , Lv Nai Xin , Wang Yuan
Published: December 2013

Dimeric oleic acid and diethlenetriamine were used to react with chloroacetic acid to getenerate quaternary ammonium of double-alkyl and double-annular imidazolinesolid inhibitors. The synthesis result was imidazolined quaternary ammonium salt by the infrared spectroscopy. The test results show that the inhibitation efficiency is increasing with the content of double-annular imidazolinesolid inhibitors at first, and then doesn’t increase any more, when the content is up to 0.3g/L. The corrosion morphology on N80 steel surface is uniform corrosion in low concentration; when the content up to 0.3g/L, then there is only invisible sign of corrosion unless a few pitting corrosion.
The Moving Boundary Movement of Vertical Fractured Well in Tight Oil Reservoir
Authors: Liu Li Feng , Wang Xin
Published: December 2013

Because of the obvious non-Darcy characteristic of fluid flowing in tight reservoirs, there is a virtual moving boundary at the flow edge, and these percolation models of fractured wells with Darcy formula are no longer applicable. Based on the threshold pressure gradient effect, the unsteady seepage flow model of vertical fractured well was established in the drain area by means of Source and Green's Functions. With the flow characteristics at the boundary of tight reservoir, the motion equation of axes of moving boundary was obtained. By Example analysis, its proved that the moving boundary is approximate circular in the far-field, and it will move slower with the increase of the threshold pressure gradient.
Gas Flow Mechanism in Tight Reservoir and Productivity Prediction Model of Fractured Wells
Authors: Zhu Wei Yao , Zhang Zhen , Deng Jia
Published: December 2013

Flow mechanism in tight reservoir is different from that in normal reservoir because of the nanoscale and micro-scale holes in the reservoir. Beskok-Karniadakis model can describe gas diffusion and flow. In this paper, Beskok-Karniadakis model was applied and optimized in consideration of the tight gas productivity influenced by both Knudsen diffusion and desorption. Furthermore, tight gass productivity of fractured vertical wells was obtained with the method of permeability resistance. In combination of examples and theory, the influence of diffusion coefficient, half-length of fractures and fracture conductivity on well gas productivity was analyzed. The results show that free gas has a close connection with total productivity. Diffusion coefficients are not the same in different reservoir, and this can also influence the productivity. For fracture conductivity, the productivity goes up with the fracture conductivity increases. A method to provide guidance of effective productivity is gotten with optimizing the conductivity.
Research and Application of the 3D Mathematic Model of Ore-Body Based on Suppac Software - Yunnan White Cattle Factory Silver Polymetallic Mine
Authors: Li Ying Ling , Gao Jian Guo
Published: December 2013

Three-dimensional models of deposit are the foundation of realizing digital mineral deposit , with the aid of mining software Surpac,it can establish deposit database, the three dimensional model of the mining surface,,orebody and roadway of the yunnan white cow factory silver polymetallic deposit.The 3D model can show the vivid image of the mining topography and geomorphology, ore body position, gallery situation. The ore model of orebody grade founding by kriging can show the distribution change of orebody grade clearly, and finally estimate the amount of ore body. Comparing with the traditional estimation method of exploration report, we can find the estimation of mineral resources by software is accurate.
Geological Characteristics and Prospecting Criteria of Sanbao Silver Polymetallic Ore Deposit in Malipo Cuntry of Yunnan Province
Authors: Wang Jian She , Yan Yong Feng , Wang Dong , Feng Peng Yu
Published: December 2013

Sanbao silver polymetallic deposit is overally located in the front of "North convex" in Laojun Mountain granite body, belonging to polymetallic deposit of stratabounded medium-low temperature hydrothermal reformation genesis. It has been found that six mineralized belt, having developed the wall-rock alteration. The prospecting criterion is determined by ore genesis and ore-controlling factor.
Genesis, Characteristics and Prespecting Marks of Phosphorus Deposits in Huaning, Yunnan Province
Authors: Pan Feng , Meng Guang Zhi , Yan Yong Feng , Wang Jian She
Published: December 2013

This article mainly analyzed and discussed the origin of exposed phosphate rock mine in Huaning area.We preliminary think the ore was started from basin phosphate deposits in the early and get rich from transportation and modification by the water repeatedly.Also at the diagenesis phase ,the Eh value is lower and Ph value is higher which makes phosphate concentration of interstitial water higher.With the affection of rich phosphorus interstitial water,the sediment get further phosphatization and makes the rock more rich.At the same time ,the calcium phosphate of intergranular water cements particles what makes the apatite has the characteristics of girdles.The analyzation leads that the cause of formation of phosphorus deposits in this area was sedimentation and modification.