bluuebunny/crossref_metadata_2025 huggingface dataset:
Research Advance in Remote Sensing to Land Desertification Monitoring
Authors: Xie Zhen Hong
Published: December 2013

This Land desertification has been a worldwide ecological and environmental problem. It is the significance for effective remedy of land desertification to monitor the desertification ,know well the present situation ,intensity as well as dynamic variation rules of the desertification. In recent years, remote sensing has become an important technology to monitor land desertification.Firstly, we summarize the research progress in monitoring land desertification using remote sensing data acquisition.Then, we discuss about themethods to extract information of land desertification from remote sensing image, which includes artificial visual interpretation, supervised classification, unsupervised classification, hierarchical decision tree classification, neural network classification and spectral mixture analysis£¬and also we comprehensively compare the strength and weaknesses of each method. Finally, We point out the problems in the remote sensing technology application to land desertification monitoring and put forward the development prospects in the application of remote sensing to monitoring land desertification.
Spatial Distribution Characteristics of Organic Matter and Total Sulfur of Different Marsh Soils in the Yellow River Estuary
Authors: Li Jun De , Sun Zhi Jun , Sun Fang , Sun Wan Long
Published: December 2013

In 2008, we studied contents of soil organic matters (SOM) and total sulfur (TS) in the surface and subsurface soils in nine typical sampling points that covered with different plant communities in the wetland of Yellow River Estuary in order to identify the influences of different plant communities. Results showed the contents of SOM varied in irregular M mode except for 0-10cm soil layer. The characteristics of vertical distribution were resemble of different sites in the whole, decreasing along with the depth though existing some waves. The diversity was remarkable (C.V. > 10%), showing as medium variability. For TS, contents decreased with plant communities succession. But the characteristics of vertical distribution was not very significant. Correlation analysis showed that SOM contents had significant correlation with TN contents (r=0.955, p<0.01), TP contents were closely linked with SOM and nitrogen contents, but TS contents had no remarkable correlation with any other element.
Ecological Effect of Typical Plants for Releasing Oxygen and Declining Temperature in Anshun City
Authors: Zhang Lai
Published: December 2013

In the urban ecosystems , the greening as a subsystem in the beautiful urban environment , it plays an active role of maintaining urban ecological balance and sustainable development. On the basis of surveying the greening in Anshun city of Guizhou, the ccological effect of 16 typical plants of them, releasing oxygen and declining temperature were studied. The results showed that the species less, structure only, species evenness low; the ability of releasing oxygen is different for different plants in different months, but the similar law is rising in June and August, declining in July and September; in August, the law of declining temperature is consistent with releasing oxygen, but the most obvious were Platanas acerifolia (0.32°C), Ligusttrum quiuoni (0.26°C), Parthenocissus trcuspidata (0.46°C) in arbors, shrubs and climbing plants. The results provide some basis informations and valuable suggestions for Anshun city ecological construction, improving the living environment and ecologically sustainable development.
Analysis of Microbial Community Structure in an Ecological Remediation Process of the River Water
Authors: Wang Ji Hua , Guan Jan Fei , Cui Di , Li Ang , Liu Xiang , Song Bei
Published: December 2013

In urban river ecosystem, microorganism plays a vital role in maintaining ecological balance. Microbial community structure changes triggered with the river remediation progress. However, the change process in different sites from ecological remediation river has not been explored deeply before. We used polymerase chain reaction-denaturing gradient gelelectrophoresis (PCR-DGGE) to examine bacterial diversity of ecological remediated river in Changzhou City, China, and with rarely and severely contaminated rivers which from the same regions as reference. Molecular data were related to environmental parameters through multivariate analysis to investigate the relationship between potential impact of water quality and microbial community structure. As the ecological remediated river, NH3-N and TP were the important environmental variables influencing microbial community composition. After remediation, the microbial community structure showed a good consistency in each site, the microbial diversity and function were greatly improved, too.
The Chemisorptions Mechanism Study of Methyl on Different Bonds in Porous Silicon
Authors: Yan Dong Zhi , Yan Zheng Xin , Zhang Tao , Yang Hua Ping , Gong An , Chen Qian , Liao Qian
Published: December 2013

The absorbing kinetic process of methyl on Si (111) surface was comprehensively studied using the method of quantum mechanics. We optimized the model structures of radical CH3+, Si (111), and CH3+ on Si (111) to obtain a rational convergence for the present calculations. The electron density difference and density of states of each model were calculated by CASTEP. The electron density difference of CH3+ on Si (111) reveals that the charge transfer factor is difference for different absorption positions, which indicates that the bond strength difference. The density of state of model exhibits that the electronic peaks move to the low energy direction. However, the absorption on B (-8.57, -2.19, 0.91) position shows a higher electron shift which evidences that it is the appreciating absorption position.
Synergistic Effect of Aldicarb on the Toxicity of Ionic Liquid Mixtures to Vibrio qinghaiensis sp.-Q67
Authors: Zhang Jin , Liu Shu Shen , Deng Hui Ping , Zhu Shu Guang , Ling Qi
Published: December 2013

Various chemicals emerge in environment and exist as mixtures with different forms and concentrations. Toxicity interaction by mixtures may pose potential hazards and risks to the environmental safety and human health. Recent data show that toxicity interaction within ionic liquid (IL) mixtures related with some certain component. However, how to determine the specific component in a mixture is not an easy work and needs more researches about it. Therefore, we investigated the toxicity of twelve groups of mixtures by using three ILs and one pesticide aldicarb as mixture components. Four binary and eight pseduo-binary mixtures were designed by equivalent effect concentration ratio ray method using EC5and EC50of individual component. The toxicities of single chemicals and these mixtures to a freshwater photobacteriumVibrio qinghaiensissp.-Q67 were determined by using the microplate toxicity analysis method. Toxicity interaction within mixtures were determined based on an additive referrence model, concentration addition (CA). The results showed that three binary IL mixture exhibited additive action and one antagonism. Interstingly, most pusedo-mixtures of aldicab and binary IL mixture exhibited cleary synergism especialy when they were mixed in the ratio of components EC5.
Characteristics of Phytoplankton Community Structure and Evaluation of Trophic State of Water Body in Bosten Lake
Authors: Mu Xing , Wang Fang , Sun He Ying , Chu Li Min , Wang Jia Li
Published: December 2013

Bosten Lake was the largest inland freshwater lake in China. It is facing with a series of ecological problems nowadays. The phytoplankton and water samples of seventeen sampling sites in Bosten Lake were collected in September 2012. Results show that sixty-four species (genera) of phytoplankton, which belong to six phyla, are identified. The community structure of phytoplankton is dominated by Chlorophyta. The mean cell density of phytoplankton in whole lake is 8179.01×104cells·L-1 and Cyanophyta accounts for 94.71%. The dominant species are Chroococcus sp. and Synedra acus. In terms of Shannon-Wiener diversity index, Margalef richness index, Pielou evenness index and total nitrogen content, it is ascertained that trophic state of water body in Estuary and Pumping Station is between mesotrophication and eutrophication. While in the other districts, the water body is eutrophic. In addition, the eutrophic degree of water body in District IV is higher.
Economic Feasibility of a Biogas Cogeneration Plant Fueled with Biogas from Animal Waste
Authors: Manganelli Benedetto
Published: December 2013

For some time now, the development of systems for electricity production based on the exploitation of renewable energy sources has begun to progress. Biogas is one of these energy sources. Thanks to the new regulations in the field of self-production of energy, the recognition of the environmental value of electricity from renewable sources and a proven technology is now possible to produce, through the process of anaerobic digestion, biogas for cogeneration of heat and electricity at favorable conditions. This study highlights the economic advantages resulting from the implementation of biogas cogeneration plant fueled with biogas from buffalos waste and other waste material resulting from the same production chain, in an area of Campania (Italy) with an intense livestock activity.
Kinetic Study on Lignin Extraction by Ionic Liquid
Authors: Deng Yu , Zhang Zhi Min
Published: December 2013

This paper has studied the dynamics of delignification in ionic liquids pulping for straw at atmospheric pressure. The date showed that the concentration of the residual lignin in the pulp obviously decreased with the extension of steaming time, pulp yield increase, and the hexose and pentose content in the black liquor was gradually increasing, and at the same time, the amount of the hexose was higher than the pentyl. The concentration of the residual lignin reduced gradually with the cooking temperature increased,the pulp yield increase slowly. The lignin removal reaction is first order reaction, the activation energy is 42.117kJ/mol.
Toxic Effects of Tributyltin and Triphenyhin on Antioxidative Defense System in the Sea Urchin Strongylocentyotus intermedius
Authors: Chen Jia , Xia Zhong Da , Chai Xiao Jie , Zhao Li Qiang , Wang Yuan
Published: December 2013

The aim of this study was to investigate the harmful effects of TBT and TPT using sea urchinStrongylocentyotus intermedius. At 2, 4, 6, 8, 10 days after TBT and TPT exposure, the examinations were taken. The results revealed that administration of TBT and TPT reduced the activities of antioxidants CAT and GPx, while MDA content increased. It was suggested that TBT and TPT were toxin with a variety of deleterious effects on sea urchin, indicating that oxidative injury and antioxidant defense system damage were induced by TBT and TPT.
Optimization of Microwave-Assisted Extraction Conditions of Anthocyanins from Black Corn Hull Using Response Surface Methodology
Authors: Jiang Yi Hua , Jiang Xin Long , Ma Qing Hua
Published: December 2013

Abstract: Surface response optimization of microwave-assisted extraction (MAE) conditions of anthocyanins from black corn hull with the factors of ethanol concentration, microwave power, extraction time, solid/liquid ratio (g:mL) on the yield of anthocyanin were studied.The results showed that optimum extracting conditions of anthocyanin from black corn hull were as follows: adding 1:40.00 (m:v) of 79.67% alcohol (pH1.0) and extracting for 79.25 s,microwave irradiation power 560.00W.
Determination on Microbial and Total Flavonoids of Commercially Available Fermented Soybean Paste
Authors: Xu Xin , Wu Jun Rui , Meng Ling Shuai , Wu Ri Na
Published: December 2013

There are 6 samples of soybean paste which collected from market will be investigated. The results show that the total counts of lactic acid bacteria in the soybean paste samples was average 105-107cfu·g-1, but the total counts of molds and yeasts in some samples was just 103 cfu·g-1. And the total counts of bacillus in samples was over 105 cfu·g-1 .Compared with nature fermented soybean paste, the counts of molds and yeasts was down. The results indicate that the microbiological compositions of the soybean paste samples maybe changed. There were less total contents of flavonoids in the soybean paste, only up to 1.26 mg/g.
Effect of Treatment Process Parameters on Soybean and Edamame Enriched with Selenium
Authors: Yang Yu Ling , Wang Chen Yang , Dong Hai Feng
Published: December 2013

Soybean enriched with selenium through foliar spraying was used to study the effect of treatment and storage on its selenium (Se) retention. Parameters such as blanching, drying mode,time of storage and storage mode were studied and evaluated to obtain effect of treatment and storage on the selenium retention of soybean in two different periods,which named soybean and edamame respectivly. After blanching in hot water, the content of Se in edamame became lower as time increased. High Se retention was found in all the four drying mode for soybean,eapecially in freeze drying.After storage in different temperature for 1,3 and 5 months,Se retention in 4°C was 99.3%,97.6% and 97.1% respectivly,while Se retention in natural temperature was 95.1%,93.9% and 91.8% respectively.
Research on Quality Variety of the Commercially Available Yogurt during Storage
Authors: Meng Ling Shuai , Wu Jun Rui , Gao Shuang , Xu Xin , Wu Ri Na
Published: December 2013

By measuring pH, acidity, mass concentration of free amino nitrogen and viable count of lactic acid bacteria from yogurt under refrigerated conditions, to study changes in the indicators of yogurt during the shelf. The results showed that during the yogurt shelf life, pH decreased, acidity increased, viable count of Lactobacillus was on the decline, nitrogen concentration of free amino acid increased less in the beginning of the refrigeration, but the indicators were still in line with national standards.
Research into the Possibilities of Using Waste Materials in Newly Developed Industrial Polymer Floorings
Authors: Kosíková Jana , Petranek Vít , Vyhnankova Michaela
Published: December 2013

This paper describes research into the usage of waste materials in newly developed industrial polymer floorings. The research outputs are presenting possibilities of replacing the commonly used natural materials by waste - without a significant change in properties of the resulting polymer flooring systems.
Laboratory Determination of Consistency of Grouting Mixes
Authors: Drochytka Rostislav , Helanová Ester , Cerný Vit
Published: December 2013

Designing of grouting mixes for reinforcement of non-cohesive soils has to satisfy demanding needs. Grouting mix has to have good workability, volumetric stability, good penetration capability, sufficient strength and, last but not least, it should not be too expensive. For above-mentioned reasons, clay-cement suspensions seem to be an appropriate candidate, also because they can be topped up with high-temperature fly ash for even higher cost saving. The paper presents results of preliminary tests of consistency of grouting mixes with various proportions of added fly ash and cement. The tests determined particularly liquid limit and viscosity limit with Marsh funnel.
Detection and Inhibition of Refractory Steel Corrosion by Rhodamine-Based Compound
Authors: Zhang Li , Zhang Da Quan , Meng Yu , Gao Li Xin
Published: December 2013

A rhodamine-based fluorescent compound, spiro[1H-isoindole-1,9′-[9H]xanthen] -3(2H)-one, ′,6′-bis(diethylamino)-2-[(1-methylethylidene)-amino] (RB1), is developed to detect and inhibit the refractory steel corrosion in 3% NaCl solution. The inhibition effect was evaluated by electrochemical measurements. RB1 suppresses the cathodic corrosion reaction and shifts the corrosion potential toward more negative values. RB1 exhibits a turn-on fluorescence emission in the presence of Fe 3+ ions. The selectivity of RB1 over other commonly coexistent Cu2+, Fe 2+ and Mn2+ was investigated. The variation of the fluorescence intensity is correlated to that of weight-loss. RB1 has a potential application as corrosion inhibitor and corrosion indicator in some industry process.
Synthesis and Characterization of ZnO Nanoparticles Templated by SBS-OH
Authors: Chen Yan Ming , Jia Hong Wei
Published: December 2013

ZnO nanoparticles were synthesized by using N, N-dimethylformamide as solvent and poly(styrene-b-butadiene-b-styrene) SBS-OH as stablizer at 100°C through “in situ” reaction process. The optical properties and morphologies for the synthesized ZnO nanoparticles were measured through UV-Vis, PL and TEM methods. The results show that corona-embedded ZnO nanoparticles could be obtained by SBS-OH micelles in polar solvent DMF. The obtained ZnO nanoparticles could give an apparent quantum size confinement effects and PL results show that ZnO nanoparticles could give good luminescence properties.
Research on the Modification of Waterborne UV-Curable Polyurethane Acrylate
Authors: He Jian Yun , Liu Yong , He Li Chen , Wang Qiang
Published: December 2013

In this study, waterborne UV-curable polyurethane acrylic resin was synthesized using polypropylene glycol, toluene diisocyanate, dimethylol propionic acid and hydroxyl ethyl acrylate, and modified by hyperbranched polyester acrylate. The influent factors on hydrophilic properties and UV curing speed of the resin were discussed, and the modified resin has compared with that of unmodified resin. Results showed that the overall performance and UV curing speed of the resin modified by hyperbranched polyester was greatly enhanced, the hydrophilic property of the resin was proportional to hydrophilic group content.
Study on the Magnetic Molecularly Imprinted Materials for Removing the Perfluorooctane Sulfonate (PFOS) in Water
Authors: Zhong Wei Min , Wang Zheng Ping , Zhou Yan , Guo Pan Pan
Published: December 2013

Molecular imprinting has been considered as one of the most useful techniques for the preparation of specific receptors. In this study, a novel molecularly imprinted material (MIP) has been developed by combining PFOS as the template with soluble polybenzimidazole which wrapped over the surface of ferroferric oxide as the carrier. Kinetics experimental showed MIP had a sorption amount of 117.6mg/g for PFOS, high than 74.6mg/g of the none-imprinted polymer adsorbents（NIP）. Additionally, in the competitive environment with other pollutants, the sorption amount of PFOS for MIP is greater than NIP, due to the electrostatic interaction in recognizing the target compound.
The Integrated Use of Many Methods in the Material Field Optimize
Authors: Song Ling , Ye Chuan Yu
Published: December 2013

Field plan has been the important work in hydraulic engineering, this paper introduces how to combine quantitative and qualitative analysis together and turn the hard quantify factors into the model Make the result of calculation is more tally with the actual and meet the needs of the reality.
The Influence of the Degree of Crystallinity on the Glass Transition Temperature of Polymers
Authors: Askadskii Andrey , Popova Marina , Matseevich Tatyana , Kurskaya Elena
Published: December 2013

The influence of the degree of crystallinity of polymers on the glass transition temperature Tg of their amorphous domains is quantitatively analyzed. The analysis is made based on the Mandelkerns ideas [ concerning the restrictive effect of crystallization on the mobility of macromolecules within the amorphous domains. At low degrees of crystallinity, Tg of amorphous domains slowly increases, and then increases much faster at high degrees of crystallinity.
Effects of Environment Temperature and Humidity on Size Distribution of Smolder Microparticles
Authors: Lin Gao Hua , Hu Hai Bing , Zhang Qi Xing , Li Yao Dong , Wang Feng , Zhang Yong Ming
Published: December 2013

The smoke particle size distribution of cotton rope smoldering fire were measured with DMS500 Fast Particulate Spectrometer under different temperature and humidity. Through the experiments, we prove that the temperature and humidity of environment have a great influence on cotton rope smoldering smoke particle size distribution. Cotton rope smoldering smoke particle size distribution at an elevated temperature will migrate to small size. Nevertheless, the effect of humidity is more complicated that need a more depth research. Additionally, Fire smoke aerosol is a non-steady-state.
Study on Mine Pneumoconiosis Disease Prevention and Control Based on Method of LEC and Markov Train
Authors: Liu Qi Wei
Published: December 2013

Used the Markov Train model, a mining enterprises pneumoconiosis incidence trends is predicted. The result shows that the unit pneumoconiosis development quickly, must strengthen the dust prevention and control. Using LEC method to mine in the workplaces where harm worker healthy environments were evaluated and harm through improved LEC method for scientific management, and put forward effective countermeasures to control, for the prevention of occupational health hazards in mines and puts forward scientific basis for control.
Evaluation of Land Ecological Security for Poyang Lake Eco-Economic Zone Based on Emergy
Authors: Liu Zhi Fei , Xie Hua Lin , Hu Jing
Published: December 2013

Land ecological security is related to the sustainable development in every country. The ecological safety status of Poyang Lake Eco-economic Zone was chosen as study area in this paper. Based on Emergy, an evaluation index system of land ecological security is constructed from the perspective of the natural, economic and social factors. The AHP method was used to determine the index weights and multi-factor comprehensive evaluation method was also adopted to quantitatively evaluate and analyze the ecological security status of land use in the Poyang Lake Eco-economic Zone. The results show a downward trend from 2006 to 2010, the state of land ecological security changed from being comparatively safe to being critical safe. The value of ecological security for the Poyang Lake Eco-economic Zone decreased from 0.7031 in 2006 to 0.6576 in 2010.
Study on the Contamination of NH3-N and Total Phosphorus in the Seasonal River
Authors: Song Xue Ying , Hu Xiao Jun , Liang Ru Jing , Liang Yu Shuang , Sun Wen Juan
Published: December 2013

Water samples were collected from the upstream to the downstream of a seasonal river, the Taizi River, and its main tributaries in dry season, normal season, and wet season. The variations of NH3-N, and total phosphorus (TP) within a hydrological year were analyzed, aimed to study the pollution characteristics and sources of the water bodies. It was found that the tributaries of the Taizi River were heavily contaminated by NH3-N, with 83.8%, 100% and 100% of the sampling sites exceeding the fifth level in the dry season, wet season and normal season, respectively. The concentration of TP in the dry season fluctuated wildly, which was much higher than those in the wet and normal season. Compared with the permissible levels set by the environmental quality standards for surface water standard (GB3838-2002) of China, 57.1% of the sampling sites in the main stream and tributaries of the Taizi River belong to the fifth level or exceed the fifth level in the dry season, and only 7.1% of the sampling sites were belonging to the fifth level or exceed the fifth level in the wet and normal season. Overall, the waterbody of Taizi River was more seriously polluted by urban domestic sewage and point source of industrial wastewater.
Influence of Water Regulation on Internal Heavy Metal Load for a Tide-Influenced Waterfront Lake
Authors: Wang Hua , Zhou Yi Yi , Pang Yong , Wang Xian Min
Published: December 2013

The Inner Lake, a typical waterfront lake was selected as the research area. By field investigation and laboratory experiment, the spatial distribution of Pb content in deposited sediments was analyzed and the relationship between Pb release rate and flow disturbance was established. A numerical model was constructed to evaluate the Pb load prior to and post the exchanged water regulation in different typical years. The results show that: influenced by the variable hydrodynamic conditions of the Yangtze River, the average Pb pollution load is the highest in high-water year; water regulation has an obvious impact on Pb pollution load in the Inner Lake, which is decreased by 65.12%, 54.53% and 62.89% in the three typical years respectively post water regulation.
Assessment on the Health Risk of Low-Molecular-Weight Polycyclic Aromatic Hydrocarbons (PAHs) in Surface Water of Lake Baiyangdian
Authors: Guo Wei , Feng Yao
Published: December 2013

Low-molecular-weight (LMW) PAHs in surface water of Lake Baiyangdian were determined to assess the potential health risk when using as drinking water for children and adults. The concentration of LMW PAHs in surface water were in the range of 77.26-760.16 ng L-1. Compared with similar results reported around the world, the level of LMW PAHs in this study was in the mid-range. The analysis of health risk indicated that risks from LMW PAHs in most part of the lake would not be risky to human health according to the acceptable risk level, while carcinogenic effects caused by LMW PAHs might occur if drinking water from Nanliuzhuang (NLZ), Shaochedian (SCD) and Laowangdian (LWD). Risks of LMW PAHs for children were apparently much higher than those caused by LMWs PAHs for adults.
Safety Evacuation at Metro Transit Station in Shenyang under Fire
Authors: Xu Yan Ying , Duan Wan Wan , Li Lu Chao
Published: December 2013

It's necessary to pay much attention to the public safety issues of subway because of the rapid development of urban subway. Safety evacuation under different fire scenarios were simulated by using SIMULEX 2.0 at Metro transit station (Youth Street station) in Shenyang combined the actual structural characteristic. The results show that the evacuation capacity of Metro Line 1 is smaller than Metro Line 2; the staircase to the station hall of Metro Line 1 would be the bottleneck of the entire evacuation process; different paths have a great influence on the evacuation time; the staircase width from the platform to the station hall is the bottleneck in the evacuation procedure.
Air Monitoring by Means of Electronic Nose
Authors: Kravchenko Elena I. , Petrov Victor V.
Published: December 2013

The problem of air quality control is relevant at the present time. There are a lot of different devices and methods of air monitoring. The promising devices for air monitoring are automated air monitoring systems functioning in real time regime. The basic part of such system is a chemical gas sensor. Gas sensors can be combined into the arrays or so called multisensor systems to increase their effectiveness. Sensor arrays using semiconductor sensors based on SnOxZrOy thin films have been investigated in this work. The recognition of ammonia, nitrogen dioxide has been made.
Identification of Trichloroethene in Groundwater Using Trees
Authors: Huang Jing Yu , Appiah-Sefah Gloria , Nti Nkrumah Philip
Published: December 2013

Several tonnes of useful chemicals are produced every year for use in households, agriculture production and industries. However, these chemicals move from their original production or application sites through the air, surface or groundwater or soils and are deposited in unintended places. The resultant contamination of these matrices and the subsequent effects on living organisms, have become a major concern for researchers and policy makers. This study aimed at using literature to briefly review the role of plants in identifying trichloroethene contamination in groundwater. It was found that plants, through direct contact with the soil and such processes as advective uptake, translocation, diffusion and particle deposition are able to incorporate most of these contaminants into their tissues and store them in leaves, branches and trunks. The entire process of removing TCE by this method has thus been found to be inexpensive, easy to undertake and has been shown to be environmentally friendly. It may therefore be an effective way for the identification and analysis of this contaminant.
Study of Ultraviolet Spectrophotometer for Rapid Analysis of Oil Content in the Oil-Contaminated Soil
Authors: Mao Li Hua , Han Xue Mei
Published: December 2013

Oil soil samples were extracted using cyclohexane, petroleum ether and chloroformion by the ultrasonic method. The feasibility of the ultraviolet spectrophotometric method for rapid analysis of the oil content in the oil-contaminated soil was explored. The result indicates that compared with other test methodsultraviolet spectrophotometry can be a simple, quick and steady detection method of oil content in the oil-contaminated soil. The method of oil material extracted by cyclohexane is high efficiency and stable. When the temperature was between room temperature and 40°C, ultrasonic extraction time is 15 min, and the extraction efficiency turned out to be stable (greater than 94%) when solvent dosage exceeded 40mL. Two stages extraction could achieve the best effect with the extraction dosage of 20 mL for each stage.
Design of a Monitoring System for an Indoor Environment Based on the ZigBee Network
Authors: Peng Chang Hai , Qian Kun , Mu Yan Juan
Published: December 2013

In this paper, we design a monitoring system for an indoor environment based on the ZigBee network. This system is mainly composed of sensor nodes, a base radio, a base station, and their software. The system can measure a variety of environment parameters, such as the temperature, the humidity, the air velocity, sound, the bubble globe temperature, volatile organic compounds, the carbon dioxide concentration, and the air quality level. A high level of accuracy, quick sensitivity, wide monitoring range, and simple and flexible networking structure are some of the features of this system that make its use promising for monitoring the indoor environment.
Temporal Variation of Urban Ambient Air Quality in Nanchong, China
Authors: Li You Ping , Zhou Hong , Liu Hui Fang
Published: December 2013

The study applied 2008-2012 hourly mass concentrations of SO2, NO2and PM10and air pollution indexes (API) to discuss the temporal variation of urban air quality in Nanchong, a southwest city in China. The results showed that the total annual mean SO2, NO2and PM10concentrations during the 5 years were 0.045±0.004mg/m3, 0.035±0.005mg/m3, 0.061±0.001 mg/m3, respectively. And the annual mean concentrations and API values presented decreasing tendency, which were less than the annual second-level air quality limit except for NO2(0.042mg/m3) in 2008. In addition, the monthly mean values in spring and winter were higher than those in summer and fall, which the maximum appeared in December, January and February and the minimum appeared in June, July and August. The ratio of reaching standard presented increasing tendency, but PM10and SO2were the main contribution to air pollution in Nanchong.
The Geochemical Characteristics of High Quality Hydrocarbon Source Rocks - A Case Study of Hailaer Basin
Authors: Wei Dan Ning , Wang Gui Lei
Published: December 2013

The distribution of high quality hydrocarbon source rocks plays an important role in the accumulation of oil and gas. As a result, the identification of geochemical characteristics of high quality source rocks is the key to discriminate the distribution of high quality source rocks accurately. By core observation and sample analysis, taking Wuerxun-Beier depression in Hailaer Basin as the target regions, we make accurate discrimination of high quality hydrocarbon source rock developmental characteristics and comparison with common source rocks. The research shows that: (1) the hydrocarbon expulsion efficiency in study zone is high due to the alternating deposits of high quality hydrocarbon source rocks and sandstones. The high quality hydrocarbon source rocks deposited in the reducing environment to strong reducing ones, whereas common rocks deposited in oxidizing environment to weak oxidizing ones. (2) the occurrence of organic matter of high quality hydrocarbon source rocks is mainly in stratified enrichment type. The organic matter develops parallel bedding or basic parallel bedding. However, the distribution of organic matter of common source rocks is porphyritic and heterogeneous, or interrupted lamellar. (3) the hydrocarbon potential of high quality hydrocarbon source rocks is more than ten times that of common source rocks. (4) the content of organic carbon in high quality source rocks is high and the content of chloroform asphalt A is relatively low, which reflects that the hydrocarbon expulsion efficiency of high quality source rocks in the sand-shale interbeds of study zone is high.
The Elemental Association Characteristics of Pb-Zn Deposits in the Sichuan-Yunnan-Guizhou Border Area in Southwest China
Authors: Jian Long , Gao Jian Guo , Dao Yan
Published: December 2013

The Sichuan-Yunnan-Guizhou border region is one part of energy sources, and is the regions with most abundant petroleum mineral resources. This paper presents ore characteristics, the characteristics of the associations of primary minerals and gangues, concluding association between Lead-zinc ore and element combination in ore occurrences in Pb-Zn deposits, which summarize common element in Lead-zinc ore of Pb, Zn, Cu, Ag, Cd, Ge, As, Sb, Hg, Bi, Sn, Mn, Ba and so on.
Geochemistry Characteristics of Cenozioc Alkaline-Rich Intrusions and its Forming Tectonic Setting in Jiudingshan Porphyry Cu-Mo Polymetallic Deposit, West Yunnan
Authors: Dao Yan , Li Feng , Rong Wang
Published: December 2013

Geochemistry Characteristics of iudingshan Porphyry Cu-Mo Polymetallic Deposit are analyzed in the presented work. The Jiudingshan alkaline-rich porphyry is formed in Cenozoic (from 52 Ma to 29 Ma), being characterized by high potassium, rich alkali and high alumina can be attributed to high K calc alkaline series and shoshonite series, which showing LREE enrichment, HREE depletion, weak negative Eu anomaly (δEu=0.72~1.02, av.=0.86) close to the crust-mantle granite type (δEu=0.83) and mainly is formed in a post-collisional intraplate tectonic setting.
Numerical Simulation Study on Hei47 Block in the Daqingzijing Oilfield
Authors: Zhuang Xing Hua , Zhang Da Hong , Xie Jun
Published: December 2013

The Hei47 block, typical tectonic reservoir of the Daqingzi oil field, the west fault of which has great influences on distribution of the remaining oil. Basing on the foundation of 3D geological model of Hei47 block, using the black oil E100 of ECLIPSE software to build the numerical simulation, we found that the remaining oil distribute in the non－injection region，and the peak area is mainly near the west fault.By means of integration of 3D geological modeling and reservoir numerical simulation technology，we can forecast the results of different injection-production ratio and production speed, and choose the best reservoir development scheme. This can be fine guidances for oilfields to establish the potential solutions and improve the recovery ratio.
The Effection of Electromagnetic Exploration by Sampling Delay
Authors: Song Jin
Published: December 2013

Because of the effcetion of primary field. if select the sampling delay blindly, it will cause distortion of explanation of transient electromagnetic exploration. We analysis of the scope of influence of primary field at first, then study on the effect of different delays for detection:the small delay causes the early false anomaly. The full time apparent resistivity is less than the theoretical apparent resistivity. The depth of investigation gets small. On the contrary, the long time delay causes the loss of the superficial ground information. The full time apparent resistivity is more than the theoretical apparent resistivity. So it can reduce the false anomaly caused by the primary field decreases only when the acquisition of the inflection point delay is adopted. Then the computing apparent resistivity is close to the theoretical value and the apparent depth of investigation increases.
Features and Regional Structures Research of Wangniangou Iron Deposit in Cangshan Shandong Province
Authors: Jiang Wei Ling , Chen Hong Yuan , Yu Du Tao , Zhou Yong
Published: December 2013

The iron deposit in Cangshan Wangniangou is a hidden deposit of “Anshan Type” with rich resources. Its tectonic structure is in the eastern edge of the Luxi (Western Shandong) Block. The main ore-bearing strata is Shancaoyu Formation of new Archean Taishan Group. With its distribution controlled by Taibai syncline, the deposit is less affected by fractures. Its main mineralization period is new Archean-late Proterozoic era. Four metamorphisms had occurred during the period, three of which had great impact on iron enrichment. Regional folds control deposit formation, while faults’ impact on it is quite limited.
Accumulation Conditions and Gas Content Characteristics of the Lower Silurian in Northwestern Hunan, China
Authors: Lin Tuo , Zhang Jin Chuan , Li Bo , He Wei , Tang Xuan
Published: December 2013

The Lower Silurian marine shale is widely distributed in Northwestern Hunan and features in a large thickness of dark shale showed at outcrops. However, the accumulation conditions and gas content is unknown. The sedimentary facies, thickness and distribution, organic matter types and content, maturity, reservoir properties and gas content of the Lower Silurian black shale in Northwestern Hunan were investigated by field observation, sampling and experimental analysis. The results show that the black shales sedimentary environment is deep water continental shelf, with featured in abundant fossil. The burial depth of the Lower Silurian black shale is 0-3000 m, and its thickness is 10-40m while the average TOC is 1.0% and average Ro is 2.9%. For the disadvantaged sedimentary facies and shallow depth, the maximum gas content of the Lower Silurian black shale from well site desorption test is 0.59m3/t only, but the result of isothermal adsorption simulate test show that the Lower Silurian black shale have a good adsorption capacity, and can generate a large number of shale gas in Northwestern Hunan where better deposition conditions and suitable depth exist in.
Numerical Simulation of Bolt-Mesh-Anchor Support Technology at Soft Rock Roadway
Authors: Yu Hui , Kong Ling Gen , Niu Zhi Yong , Zhu Shi Ting , Jing Dan Yang
Published: December 2013

The roof of 12501 transportation roadway of Tunlan mine is friable. To solve the problem of large roadway deformation, the bolt-mesh-anchor support scheme is put forward. With the FLAC3D numerical software in the program, the simulation analysis shows that the program can effectively increase the roadway confining pressure to improve the state of the surrounding rock stress, reduce roadway displacement and deformation and thus keep the stability of the surrounding rock. The results show that Bolt and cable support can effectively control the surrounding rock, with the roadway convergence rate small, and the support system safe.
Study on Mechanism of Geological Storage of Carbon Dioxide in Coal Seam and Enhanced Coal Bed Methane Recovery
Authors: Han Feng Shan , Wu Xin Li
Published: December 2013

The emission in atmosphere results in global climates warm, reduction of emission is growing concern of many countries. The geological storage of is effective method to reduce emission. Because coal seam has strong absorption capacity for ,the coal seam can be used as geological storage reservoirs, and coal seam has such characteristics that coal seam is preference for absorption and postponement for absorption, injection into coal seam can enhanced coal bed methane recovery, -ECBM, because and compete and absorb in coal seam , displace , hence coal bed methane can be obtained by The geological storage of in coal seam,is a energy generated by methane from injection into coal seam, injection into coal seam can not only reduce emission and but also enhance coal bed methane recovery, that is important to environment protection and energy sustainable development.
Test Study on Dynamic Mechanical Property of Jointed Rock Mass
Authors: Zhang Li Min , Lv Shu Ran , Liu Hong Yan
Published: December 2013

Failure modes of jointed rock mass with different joint dip angle, joint center continuity degree, joint sets, load strain ratio and joint filling width under SHPB test are studied with model tests. The results show that failure modes and dynamic strength of jointed rock mass are much related to joint geometry. To rock mass with a single joint, its strength and failure mode are greatly controlled by the joint dip angle. The dynamic strength of the samples with joint dip angle 0° and 90°, whose failure modes are both tensile failure, is 90% and 71% of that of intact one, respectively. The dynamic strength of the samples with joint dip angle 60° is nearly zero. The dynamic strength of the samples with joint dip angle 30° and 45°, whose failure modes are mainly shear failure with partly tensile failure, is 50% and 18% of that of intact ones, respectively. The dynamic strength of the samples with 1/4, 1/2 and 4/5 joint center continuity degree is 95%, 74% and 28% of that of intact one, respectively. The dynamic strength of the samples with 1, 2 and 3 sets of joints is 54%, 23% and 10% of that of intact one, respectively. The dynamic strength of the intact and jointed samples both increases with load strain ratio, and the sensitivity to load strain ratio of the former is much higher than that of the latter, whose failure mode becomes more complicated accordingly. With increase of joint fillings width, the samples dynamic strength decreases gradually, but its failure mode does not change.
The Application of 3Dmine in Lan Jian Orefield of Panzhihua Vanadic Titanomagnetite
Authors: Lv Wen Li , Li Jun , Yan Yong Feng , Gao Shuai
Published: December 2013

From the 21st century, computers are widely used in various fields, in the mines, driven by digitization, the birth of 3Dmine make digital mine entered a new phase, Lanjiahuoshan and Jianbaobao are very important in Panzhihua mine. Based on 3Dmine’s advantages, combined with the geological conditions of two mines, this paper established the underlying database, surface models, physical models, block model. The study confirms 3Dmine digital applications in the mine and provide the basis for the mine design, measurement, the production and management.
Entropy Weight-Fuzzy Comprehensive Evaluation Method of the Safety Evaluation of Water Inrush
Authors: Zhang Tian Jun , Ren Jin Hu , Yu Sheng Hong , Cui Wei
Published: December 2013

For the accuracy of the inrush risk assessment of the problem, put forward in the mine inrush risk assessment using the entropy weight fuzzy comprehensive evaluation method to determine the index weight, through the membership function in fuzzy comprehensive evaluation to quantify the qualitative description of these factors, evaluated the henan jiaozuo mine inrush risk. The results show that the mine water inrush risk grade is "great", the actual mine water inrush accidents have occurred, prediction results conform to the actual situation, and safety evaluation value based on the principle of maximum membership degree is more than analytic hierarchy - fuzzy comprehensive evaluation to get , 0.0696. Thus, the method in the mine inrush prediction can objectively and accurately reflect the actual situation of mine inrush.
Research on the Design of the Rock Drift's Rapid Excavation Construction Organization on the East Wing of Xinsan Mine
Authors: Zhao Peng Fei , Xue Hua Jun , Wang Wen Bo , Li Tao Tao , Ma Shi Yan
Published: December 2013

The east wing of the third new mine of Fengfeng Group co., LTD has been designed to construct about 2490m with a long service time, bad geological conditions and slowly driving speed. Through improving rock drivage construction techniques, the mine has taken measures of driving by three teams, a scientific construction organization of digging while spraying and a kind of advancing crossover operation method of after four in the first four. In addition, the mine also strengthens the management and takes scientific and reasonable scoring model and acceptance criteria. Through all these measures the mine has improved the driving speed effectively and make on the single lane rock drivage footage of more than 120 m good grades. The effect of roadway supporting and forming is of good quality and it has never had safety accidents. Whats more, the economic benefits and social benefits are obvious. It provides an important reference significance for similar quick rock drivage project.
Research on Gas Outburst Prediction in Coal Mining in China Based on a New Kind of SVM Algorithm
Authors: Zhang Jie , Ma Hong Wei
Published: December 2013

The research on predicting gas outburst hazard on the basis of the unbalanced problem of gas monitoring samples under usual circumstances is given in this paper. Combined with outburst-preventing monitoring parameters, a new kind of method of predicting gas outburst hazard based on v-SVM algorithm through analyzing features of real-time gas monitoring data and extracting parameters of gas concentration real-time variation trend, parameters of gas variation rates and feature parameters of gas emission is put forward in this paper. And the application shows that this algorithm for the prediction of actual gas emission in coal mines is effective.
Numerical Simulation Study on High Dip Bedded Soft Rock Slope Stability of Surface Mine
Authors: Liu Bao Yong , Yang Di
Published: December 2013

According to the actual progress of a certain Surface Mine and based on strength reduction method, the deformation and fracture processes of the high dip bedded soft rock slope was simulated with RFPA-SRM, the stability of the slope was calculated. By analyzing the numerical simulation results, the characters of the deformation of high dip bedded soft rock slope and the landslide mode were demonstrated, which could provide a scientific basis for reasonable landslide control measures.
Optimization Study on Flotation Conditions of Complex and Refractory Lead Oxide Ores
Authors: Feng Qi Cheng , Wen Shu Ming , Deng Jiu Shuai , Lv Chao , Zhao Wen Juan
Published: December 2013

The optimization condition of flotation reagents of complex and refractory lead oxide ores from Yunnan was studied in this paper. Based on the research on the properties of the material, the grinding fineness and reagent dosages were investigated and a technological flowsheet consisting of one roughing flotation, two scavenging flotation and two concentrate flotation was adopted. The optimum parameters of flotation experiment were determined as grinding fineness of 85%, dosage of sodium silicate at 800 g/t, dosage of Na2S at 1200 g/t and dosage of isoamyl xanthate at 600 g/t. Under such a condition, a lead recovery of 76.55% with a concentrate grade of 58.67% was obtained, which effectively improved utilization of lead resource.
Experimental Study on Floatation of Scheelite Ore of Jiangxi
Authors: Wu Dan Dan , Wen Shu Ming , Yang Jing , Deng Jiu Shuai , Liu Jian
Published: December 2013

In this study, according to the characteristics of scheelite in run-of-mine, the scheelite was concentrated by adopting the full flotation process with sodium carbonate as regulator agent, sodium silicate as inhibitor for gangue minerals, lead nitrate as activator and ZL pharmacy as collector. 6.15% of the coarse scheelite concentration with tungsten recovery of 96.18% was obtained from the raw ores with grade of 0.86%. The concentration of rough tungsten by heating, by which the high-quality scheelite with tungsten of 62.31% and tungsten concentrate recovery of 93.53% was obtained.