bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Particle Swarm Algorithm for Solving Constrained Optimization Problems
Authors: Wu Tie Bin , Cheng Yun , Liu Yun Lian , Zhou Tao Yun , Li Xin Jun
Published: August 2013

Considering that the particle swarm optimization (PSO) algorithm has a tendency to get stuck at the local solutions, an improved PSO algorithm is proposed in this paper to solve constrained optimization problems. In this algorithm, the initial particle population is generated using good point set method such that the initial particles are uniformly distributed in the optimization domain. Then, during the optimization process, the particle population is divided into two sub-populations including feasible sub-population and infeasible sub-population. Finally, different crossover operations and mutation operations are applied for updating the particles in each of the two sub-populations. The effectiveness of the improved PSO algorithm is demonstrated on three benchmark functions.
A Preprocessing Algorithm of Corn Infrared Spectrum Based on MSC and DOSC
Authors: Zhao Jian , He Ji Ming , Chen Xi , Zhu Xiao Qiang , Wu Jiao Jiao , He Guo Tian
Published: August 2013

To characteristics the near infrared spectrum of corn, we proposed a preprocessing algorithm combining multiplicative scatter correction (MSC) and direct orthogonal signal correction (DOSC). In this article, we compared the SG first derivative correction, MSC, DOSC and the new algorithm. And using partial least squares analysis (PLS) built the quantitative analysis model. The results show that the preprocessing algorithm combining with the MSC and DOSC can improve the prediction accuracy of all components. This work has some practical and scientific value.
Application of Inversion after Limestone Hollow-Out in Pearl River Mouth Basin
Authors: Yang Ying Jun , Zheng Jun Mao , Ding Zheng Qing
Published: August 2013

The target layer of study area belongs to delta front and shallow shelf deposition, and the sedimentary formation is sandstone and mudstone thin interbed, the limy developed in sand layer. To make the inversion data reflect the characteristics of reservoir accurately, the methods of limy separation analysis by drilling and forward modeling have been used in this paper, and removed the limy from seismic data according to the characteristics of wave impedance（limestone hollow-out）. According to the research of limestone hollow-out Inversion, delta front sand bodies developed in the J2 formation of H district, and the J2 formation of H district where it is in the west of the study area, a gravity flow channel in the center, shallow shelf sand ridge sand bodies mainly developed in the eastern; delta front sand bodies developed in the J1 formation of HD district, which includes underwater branch channel sand body. A number of lithologic traps have been found and optimized by the research of Retrieval data near the large fault and ramp region, and also have achieved the intended purpose. This inversion method is a kind of reservoir prediction method based on seismic, geological and logging, which added in forward modeling techniques, and is an extension of Model seismic inversion method, and also Provided a new approach for reservoir prediction of the special lithological developed zone.
Assessment of Rare Earth Supply and Demand Relationships: A Literature Review
Authors: He Chun Yan , Lei Ya Lin
Published: August 2013

This paper reviews research on assessment of rare earth (RE) supply and demand relationships in recent decade from four study fields: (i) criticality assessment of RE supply risk, (ii) RE projects risk assessment and effect on the global RE supply-demand pattern, (iii) RE international pricing power, and (iv) China's RE trade policies. The study results serve as a stepping stones for the additional research on this issue. At last, some research agendas are proposed respectively from study fields, objects, and assessment methods.
Study of Sensor of Electrical Capacitance Tomography (ECT) System Based on COMSOL
Authors: Cao Hai Yan , Duan Xue Mei , Wang Hua Xiang
Published: August 2013

Electrical Capacitance Tomography technique is a new technique for multi-phase flow measurement. With broad application prospects, the purpose of this technique is to identify each phases composition of two-phase/multi-phase flow system in a closed pipe. A new method COMSOL was used to analysis the electrical capacitance tomography of reconstruction image and simulation research. First of all, different electrical models were established, and the reconstruction images of four kinds of representative flow were achieved; In addition, through simulation study of the field with disperse phase, the influence of the electrode number, shielding case and radial electrode to the imaging quality were analyzed; Finally, the reconstruction images of three-phase flow were achieved to obtain the satisfactory result.
An Enhanced Cross-Layer MAC Design for Energy Efficiency in Wireless Sensor Networks
Authors: Yang Guo Yan , Guan Xin
Published: August 2013

In wireless sensor networks, the main research objective is the development of algorithms and protocols ensuring minimal energy consumption. Most proposed solutions are based on one-layer stack model approach. In this paper, we propose an energy efficient MAC protocol that applies routing and MAC layers jointly. In this new approach, the interactions between MAC and Routing layers are fully exploited to achieve energy efficiency for wireless sensor networks. In the proposed MAC protocol, we solve the forced wake-up problem in the adaptive S-MAC to reduce energy consumption of the nodes, by exploiting routing information to wake-up only nodes belonging to a routing path. Simulation results show that the proposed CL-MAC protocol significantly improves energy efficient compared to the adaptive S-MAC.
Carbonate Depositional Facies Analysis and Reservoir Prediction for Central Block in Pre-Caspian Basin
Authors: Wang Zhen , Wang Yan Kun , Luo Man , Ling Kong Hong , Lin Ya Ping
Published: August 2013

In waveform classification for which abundant seismic data are fully used, neural network algorithm is applied to compare and classify the actual seismic waveforms by traces for one specific formation, so as to delineate the lateral variation of seismic signal in details and thus acquire the seismic facies maps corresponding to geologic characteristics. Moreover, through analysis of drilling data, logging data and depositional facies, the depositional facies belts are further divided for formation and lithologic reservoir prediction. Carbonate reservoir in the Central Block in the east margin of Pre-Caspian Basin is discussed as an example to introduce the application of waveform classification and depositional facies demarcation in the Carboniferous Carbonate reservoir. Favorable reservoir beds are also predicted, contributing to a big breakthrough for risk exploration in this area.
Characteristic Analysis of Texture and Structure of Ores and Genesis of Luziyuan Pb-Zn Polimetallic Deposit in Zhenkang, Yunnan, China
Authors: Lin Bing Xia , Deng Ming Guo , Liang Xu Wen
Published: August 2013

The main ore structure of the deposit include: disseminated structure, emulsion droplet-like structure, banded structure, vein-like structure, the massive structure, brecciated structure, etc.; The main ore texture include: crystalline granular texture, the replacement texture, solid solution separation texture, interstitial texture, etc. According to the ore fabric characteristics and metal minerals and gangue mineral combination, type and shape since the degree and mineral in space analysis of characteristics of the relationship, the mining area can be roughly divided into three periods: sedimentary diagenesis stage, the initial formation of the sources, hydrothermal reformation metallogenic stage and supergene stage. It was considered that Luziyuan Pb-Zn polymetallic deposit is the hydrothermal deposits for early deposition, the late hydrothermal transformation.
Development of Digital Vehicle Information Terminal Hardware System
Authors: Zhang Kai , Fan Lu Yan , Tian Ye , Li Nan
Published: August 2013

This paper briefly introduces remote monitoring system of the electric vehicle, and digital hardware system of vehicle information terminal development. This system consists of the core processing module, power supply module, CAN communication module, serial communication module, communication module and 3G communication module. All modules work together, they realize the function of remotely gathering data of vehicle under various operating conditions together, and diagnose fault through the analysis of the fault code and the diagnosis.
Fuzzy AHP-Based Algorithm for Performance Evaluation of New Socialist Countryside in Northwest Minority Regions of China
Authors: Yang Chao Ji , Ma Hai Ying
Published: August 2013

New socialist countryside (NHC) is usually observed in rural social economic development in China since 2005. In this paper, we analyzed NSC construction in Northwest Minorities regions of China based on the idea of an Fuzzy AHP Algorithm which builds a combined analysis technique of AHP and Fuzzy theory for multiple criteria decision making, and by four aspects: new farmersdeveloped agricultureharmonious countryside and environment for minority populations. The result show that evaluation index system based on Fuzzy AHP Algorithm in Northwest Minority regions has good reliability.
Mathematical Models for 3D Reconstruction Using Surface Triangulation
Authors: Pan Li Yan , Liu Yan Pei
Published: August 2013

3D reconstruction is one of the most important research areas in computer version, which has a very wide application. Triangulation of simple polygon has been quite a matural mathematical approach in this field. Based on the bijection between triangulation and graph without loop, the problem is converted into the study of graph without loop. Firstly, enumerative equations of graph without loop for given number of vertex degree and edges are provided, including orientable, nonorientable and total of all surfaces. These differential equations are all Riccati type. No feasible and convenient way has been in sight for extracting an explicit solution to resolve the functional equations up to now. Next, the corresponding calculative functions of graphs with two parameters are extracted directly and the number can be derived by simple recursive formulae. The established mathematical model could provide a theoretical foundation for computerized algorithms, which can be used for 3D reconstruction.
Pheromone-Based Ant Colony Algorithm for Optimal Proliferation of Research
Authors: Deng Lei Lei
Published: August 2013

In order to realize the water-saving irrigation of field plots path pipeline deployment management and control, the pheromone of ant colony algorithm for optimization design of. Ant colony algorithm (ACA) is a kind of Bionic Engineering with the development of the optimization algorithm, is mainly based on ant foraging in the search for the shortest path model and form. This article attempts in the existing ant colony algorithm combinatorial optimization of real defect on the basis of field plots, to coordinate as a data source, An improved ant colony algorithm for field plots wiring path design, thereby improving the ant colony algorithm in an iterative process to update the optimal solution ability, Finally in the same number of iterations to find path shorter, cost less rules, solve agricultural water-saving irrigation pipeline path optimization deployment problem. And in the VC++ program validation path optimization problems. The test results show that, under the same climatic conditions, route optimization design results can be deployed for water saving irrigation pipeline layout management provides reference basis and data support.
Realization of the Multi-Factor Combined Information Value Model in the Spatial Prediction of Landslides
Authors: Chen Yu Feng , Cao Xue Lian
Published: August 2013

Information value model simplify the total information of evaluation unit down to sum of each factor, what may influence the prediction accuracy when factors are strongly correlated . Thus, its better to select the original modelthe multi-factor combined information value model, which directly calculate the information of factors-combination. However, the calculation is hard to realize due to the large number of combinations. In this paper, we propose a method that can quickly calculate the information. Taking Badong area for example, selecting slope, aspect, lithology, distance to drainage system and distance to road as influence factors, constructed the ideal information value model and the multi-factor combined information value model respectively. We found that the former model accuracy is 71.1%, with the latter is 80.3%. The result proved that the correlation between factors may have great influence, and showed the multi-factor combined information value model is better in a way.
Research on the Mapping Rules of Complex Inheritance Relationship from CIM to the Logic Model
Authors: Wang Dan , Zhao Song Zheng , Hu Xiao Xue , Liu Yu Xi , Zhao Jia Kui
Published: August 2013

There are not a set of perfect rules as well as implementation methods to meet the demand of electric marketing business and to transform Common Information Model (CIM) into the logical model. In this paper, the complex inheritance relationship, such as the absence of multiple inheritance and the empty of parent class, is considered in CIM. This paper also focuses on the universally unique identifier IdentifiedObject class, from which most classes inherit. Moreover, based on the research about the complex inheritance relationship from CIM to the logical model, several mapping rules are introduced, which can make the transformation come true.
Studies on the Secure Routing Protocols of Mobile AD Hoc Networks
Authors: Cai Zheng Ce
Published: August 2013

A mobile AD hoc network (MANETS) is a collection of mobile nodes which can dynamically form a temporary network without using any existing network infrastructure or centralized administration. Mobile ad hoc networks (MANETs) bring great challenges in security due to its high dynamics, link vulnerability, and complete decentralization. With routing being a critical aspect for MANETs, existing routing protocols, however, are not sufficient for security requirements. Limited bandwidth and mobilityrequire that ad hoc routing protocols be robust, simple, and energy conserving. This paper firstly analyzes the routing attacks of mobile Ad hoc networking, then elaborates and compares some ad hoc secure routing protocols, at last points the future researches.
The Properties of Analogous to Dedekind Sums
Authors: Yang Ming Shun
Published: August 2013

The distribution problem of a sum analogous to Dedekind sums is studied by using the mean value theorem of the Dirichlet L-functions and the property of Dedekind sums , and an interesting mean square value formula is given.
Research on Scientific and Technological Innovations Promoting on the New Round Economic Structure Adjustment of Liaoning
Authors: Zou Hua , Zeng Wen Jun , Liu Jian
Published: August 2013

The new round economic restructuring which is caused by the U.S. Subprime Crisis proceeds in the environment of many adverse effects. Facing the new round Economic Restructuring, it is an objective requirement for Liaoning to use scientific and technological innovation to implement Revitalizing programs for ten major industries, also a very important way to ensure the emancipation from the financial crisis with the fast development of Liaoning economy. Through theoretical analysis of Scientific and Technological Innovation in promoting economic restructuring, the paper combined with the characters of the new round economic restructuring analyzes ways and contents even an index system of scientific and technological innovations promotion of economic restructuring.
Study on the Tourism Value Evaluation of the Urban Industrial Heritage on the Basis of Matter-Element Model
Authors: Xu Zi Lin , Shen Ju Qin , Liu Bo , Tang Liang , Wang Feng
Published: August 2013

The index system for the tourism value evaluation of the urban industrial heritage was constructed from four perspectives, including the value of locational factor, value of science and technology, value of humanistic emotions and the aesthetic value of tourism. The evaluation model for the urban industrial heritage was established on the basis of matter-element model and analytical hierarchy process.
Education of Low Carbon and Cultivation of Social Responsibility
Authors: Xiong Shui Ying , Zhang Zong Xi , Huang Cheng Cai , Qiu Mu Qing
Published: August 2013

Developing low-carbon economy is an important task for sustainable social development, college students are new force to spread the low carbon concept and practice low carbon development. Therefore, the strengthening of the college students, low carbon concept of culture is of great significance. Low-carbon life is not just a fashion we pursue should fulfill the social obligations. Learn from foreign low-carbon lifestyle based on, Raised this responsibility requires schools, the teachers and students tripartite fulfill in order to jointly build a harmonious campus.
Research on Seaport Cluster Strategy of Qingdao Ports Based on SWOT Analysis
Authors: Han Shan Ling , Wang Yu Yue , Liu Xu Feng , Wu Yi Wei
Published: August 2013

The seaport cluster is an important method to make full use of finite resources. According to SWOT analysis, the article proposed that the strengths of Qingdao ports focus on management, brand and information technology. Its weaknesses concentrate on the Inter-port contradiction, collecting and distributing system, and the international trans-shipment operations. The opportunities are the policies attention and the development of hinterland economy. However, the threats mainly come from Inter-port competition outside the Shandong Peninsula region. Through the analysis, Qingdao ports faced with far greater opportunities than threats. Therefore, in order to reduce the Inter-port competition and upgrade the whole competitive ability of Qingdao Peninsula ports, the implement of seaport clusters within Qingdao ports is imperative.
Developing of Organisational Culture as a Presumption of Industrial Enterprise Performance Optimization
Authors: Čambál Milos , Cagáňová Dagmar , Delgado Sobrino Daynier Rolando , Košťál Peter
Published: August 2013

Organisational culture is nowadays considered one of the key factors of industrial enterprise performance optimization. It is the appropriate organisational culture that enables human resources to activate the other resources of an enterprise and so optimize their utilization. At the same time, it is obvious that one of the conditions for success is understanding the value and importance of human resources that are crucial for success of an enterprise itself. For this reason, it is very important to pay attention to development of industrial enterprise culture. However, creating of enterprise culture cannot be a single activity. There should be a continual systematic process including application of complex training programmes for the employees.
The Governmental Supervision Responsibility and Standardization Construction of Construction Quality
Authors: Guo Han Ding , Cui Si Wen , Zhang Yin Xian , Hao En Hai , Yang Xiao Ping
Published: August 2013

Our country has carried out the government supervision system of construction quality for twenty-eight years and had a great achievement in the effective guarantee of construction quality aspect. With the deepening reform of governmental supervision in construction quality, the scientific and standardization of supervision become the characteristics of the new era of quality supervision work. Analysis the risk of the quality supervision, the restraint of institution, the obstacle of system, a correct understanding of the relation between the target of governmental quality supervision and supervision responsibilities, need to carry out the scientific supervision of construction quality based on the working of standardization system of supervision. Implementation of construction quality supervision and standardization is the inherent request of change the way of supervision, is the law of the change of new era supervision, is the effective way of improving the supervision efficiency, is the platform foundation of realizing the modernization of supervision, is the behavior criterion of the standardization of supervision behavior, is the watershed of defining and distinguishing the nature of supervision responsibility.
Metallogenic Model and Prospecting Orientation of Aketasi Gold Deposit in Xinjiang
Authors: Wei Xiao Feng , Xu Jiu Hua , Pan Dong , Ding Ru Fu
Published: August 2013

The Aketasi gold deposit, located in Fuyun County,Xinjiang,has some characteristics of subvolcanic-strucural altered type gold deposit. The metallogenic model can be generalized that Beitashan Formation of mid-Devonian was the original mineral source,and then plagiogranite emplace along the deep fracture, activating and extracting the gold element, achieving the first enrichment. The subsequent fault and the hydrothermal activities lead to the secondary enrichment of gold element ,finally form Aketasi gold deposit.The inside and outside contact of plagiogranite rocks,the zone with mercury vapor anomalies and the geochemical anomaly aera of Au Ag are the favorable for gold deposits.
Research and Application on Model of Dynamic Controlling Sand in Surennuoer Area
Authors: Hu Yu Shuang , Zhang Jiao , Liu Shu Fen , Chen Xi
Published: August 2013

Time-space-source dynamic controlling sand theory emphasized the size, supply and distribution of the source changes with time and space. Based on this theory, ramp-type, half-graben type and slots, grooves parallel-type sand control modes were established at Surennuoer oil field. According to the attribute maps and the sandstone thickness maps, the sand scope of nantun group can be determined, after identified the sand control point by using the fault throw statistic and 3D visualization technology. Sedimentary facies and the single well integrated histogram were used to verify the accuracy of the sand body divided. The results showed that: the sand control scope divide very accurately,and the sand control scope dovetail nicely with turbidite fan, braided channel and other sand-rich sedimentary facies.
Tectonic Environment and Geochemical Characteristics of Geza Arc Magmatic Rocks in Sanjiang Orgenic Belt, SW China
Authors: Liu Xue Long , Li Wen Chang , Yang Yan , Yin Guang Hou
Published: August 2013

Geza island arc located in the southwest Sanjiang tectonic igneous rock belts, it was a products of Ganzi-Litang oceanic crust diving to Zhongdian Landmasses in late Triassic and a important of newly discovered copper polymetallic belts in the recent years in China. The regional strong tectonic-magmatic activity throughout the island-arc orogenesis from beginning to the end, the rich mineralization developed in the different times and different circumstances. Based on the development stage of island arc orogenic,the distribution of intrusive rocks, rocks composition, geochemical characteristics, Geza island arc granit belt can be divided into three belts. Lithogeochemical characteristics show that the porphyry (porphyrite) and island-arc granite rocks have the same rock series (high-K calc-alkaline) and the same genetic type (I-type granite); these rocks trace elements very similar to granite of island arc, which enriched in Ba, La, Hf, Au,chalcophile elements Cu,Pb, siderophile elements Mo, Ni, and depleted in Rb, Nb, P, Ti.
Characteristics of Coal and Gas Outburst within Gas Geological Units in Qidong Mine
Authors: Chen Ai He , Lei Dong Ji , Zhang Yu Gui
Published: August 2013

The precise mechanism of the coal and gas outburst is still unresolved, but productive practices in Qidong mine have testified that the coal and gas outburst accidents are predominantly associated with the belt of geological structure, the zone of tectonic coal occurrence and the area of the stress concentration. So it is very important to study characteristics of coal bed gas geology for coal bed gas prediction and prevention. Using gas-geology theory and method, the research focused on the factors of coal and gas outburst, such as coal bed gas occurrence, stress distribution, tectonic coal occurrence and magmatic rock presence within Qidong mine. The result shows that: Qidong mine district could be divided into 4 geological units by 3 faults as the boundary, the faults of Weimiao fault, F2, and F5; there are different conditions and main controlling factors of coal bed gas occurrence within four geological units. The unit I of geology: coal bed gas occurrence conditions are simpler, mainly contacted with the coal burial depth; the unit II: the conditions are more complex, predominantly associated with fault structures; the unit III: as a result of the presence of igneous intrusions, coal bed gas content in unit III is the highest within the whole mine; the unit IV: major factor of the conditions is the fold caused by strata uplift, which also leads to a large number of gas emissions. 25 coal and gas outburst accidents all occurred within the unit II of geology.
The Application of Induction Logging Adaptive Deconvolution Processing in Water Flooded Recognition
Authors: Zeng Ke , Zhang Mei Ling , Feng Lei , Yang Ke Na
Published: August 2013

The adaptive deconvolution processing is a kind of processing method for different background conditions. The reservoir of FuYang group in Yushulin oil field has the typical uneven feature with low porosity and low permeability. After the oil reservoir flooded by ejecting water, the zones without water and the zones with water interlaced with each other, that makes the induction logging curves with lower longitudinal resolution hardly reflect actual water-flooding condition. This paper takes adaptive deconvolution processing method selecting background conductivities according to the measurement points’ conductivities, which improve the resolution of induction logging data significantly. The processing value of resistivity is similar with the true formation resistivity.This method is better on identifying the water flooded condition of the oil reservoir.
The Double (or Multiple) BSRs Observations and their Tentative Interpretations
Authors: Luo Yi , Su Xin
Published: August 2013

Gas hydrate is a solid ice-like compound and is stable at low temperature and high pressure conditions found beneath permafrost and in marine sediments on continental margins offshore. In the marine environment, the bottom-simulating reflector (BSR) in seismic reflection profiles is interpreted to indicate the base of the gas hydrate stability zone (GHSZ).In many locations two or more sub-parallel BSRs have been reported. We not only compared the BSRs characteristics from reported areas but also discussed the mechanism of GHSZ shifts by climate change, sedimentation process and tectonic movement. We also considered the mix gases composition hydrate stability in certain marine environment and gave a simple model for the BSR differences on water depth.
The Structural Analysis of Deep Gas Occurrence and Prevention of Gas Disaster in Fengfeng Coalfield
Authors: Geng Mei Hua , Lv Xiu Jiang , Zhang Xiao Gang
Published: August 2013

The geological structure is an important factor of gas occurrence in coal seam, and the gas occurrence in deep coal seam should be paid attention to enough because the occurrence was more controlled by geological structure and influence. Taken Fengfeng coalfield as target in this paper, the geological structure of this coalfield was described. The deep coal mining district which is monoclinic structure in Fengfeng is located in the east of Gushan anticlinoria, which the junior small anticlines and synclines of the sub-echelon are well developed. And regional fault structures are intensive, the pressure structure is the major structure among this region. The characteristics of geological structure in Fengfeng coalfield were analyzed. The tensional structure planes and pressure structure are the major effect factors, and the latter is the main form of gas occurrence in deep. Some suggestions on safe of deep mining in high gas environment is also put forward, in order to provide theoretical support for the deep coal mining and gas disaster prevention.
Artificial Ground Freezing for Rehabilitation of Tunneling Shield in Subsea Environment
Authors: Hu Xiang Dong , Zhang Luo Yu
Published: August 2013

Artificial ground freezing method was employed in the rehabilitation project of a subsea tunnel. To ensure safety of the subsea rehabilitation work, special design and research were conducted considering the unfavorable influence of the salt in seawater had on freezing effect, such as thickness thinning and strength loss of the frozen wall. A shell-shaped frozen soil wall was designed to cut off the leakage channel into the shield. Double rows of vertical freezing pipes with limited-depth freezing were settled in front of the cutter head, and auxiliary freezing pipes were settled at the sides of the shield to achieve the design goal. Results of analyzing monitoring data on frozen soil temperature showed that the design was reasonable for shield rehabilitation in subsea stratum.
Study of Rock Mass Rupture Law and Seismic Focus Positioning Process Revealed by Microseismic Monitoring
Authors: Li Feng Qin , Zhao Xin Tao
Published: August 2013

In the general, the rock mass rupture will produce a certain energy of seismic waves around the spread, the seismic waves can be received and recorded by microseismic monitoring instruments. The rupture positioning is done by using the "four - four composite positioning" software, which records the rupture waveforms for different observation points and further determines the source location.
Oxidation of Huolinguole Lignite with NaOCl
Authors: Gong Gui Zhen , Chu Ji Ming , Wei Xian Yong , Zong Zhi Min
Published: August 2013

Huolinguole lignite (HL) was oxidized with aqueous NaOCl solution under mild conditions. The oxidation products were analyzed by GC/MS. In total 111 products from the HL oxidation were detected, most of which were benzene polycarboxylic acids and short-chain alkanoic acids, while a predominant chlorinated compounds such as trichloromethane, dichloroacetic acid, trichloroacetic acid were also identified. These results indicate that oxidation of coals with aqueous NaOCl solution may be a promising method for high value-added utilization of coals.
Present Situation of Coal Recovery Rate in our Country and Countermeasure Research
Authors: Yang Guang Rong , Fan Long , Wang Zhi Gang , Wang Guang Hui , Xing Jun Long
Published: August 2013

Based on the dominant position of coal in the energy structure in our country, the paper analyzes the present situation that the recovery rate of coal resources in our country. From two aspects of natural factors and human factors, it analyzes the causes of low recovery rate of coal resources, and points out that human factors are the main reasons for the low recovery rate of coal resources. Finally, suggestions for the improvement of recovery rate of coal resources are given.
Research on Sodium Removal from Zhundong Coal
Authors: Chen Chuan , Zhang Shou Yu , Shi Da Zhong , Lv Jun Fu , Liu Da Hai , Guo Xi , Dong Ai Xia , Xiong Shao Wu
Published: August 2013

Zhundong area in Xinjiang Uygur Autonomous Regions, China is rich in subbituminous coal reserves. Zhundong coal is characteristic of low mining cost and fine reactivity. However, the serious slagging and fouling occurring on the heating surface because of the high sodium content of Zhundong coal leads to very dangerous and uneconomical operation of Zhundong coal-burning boilers. Here, A method using a washing solution to remove sodium from the coal is presented and the effects of temperature, pressure and washing solution amount on the sodium removal from Zhundong coal was investigated. The experimental results show that the temperature employed is the main influencing factor for sodium removal and pressure has little influence on the results. After treatment with the right processing conditions, the upgraded Zhundong coal with the sodium content below 2% (based on ash yield) is obtained and the sodium removal efficiency is higher than 70%.
Study on Methods of Exploring the Loosening Radius of Deep-Hole Controlling Blasting
Authors: Zhang Wen Qing , Liu Jian
Published: August 2013

Deep borehole controlling blasting is one of the most popular methods which used to improve permeability of low permeability and highly gassy coal seam. Proper interval between blasting hole is the critical factor. On this paper, the theory and insufficiency of each method are discussed by theoretical analysis and field investigation. The result shows that, because of the complexity of outburst coal seam, the measuring result got by different methods is relative and declinational. We need to make a right choice according to the actual demand. And the method of gas flow index is quickly, visual and reliable, which to be worth paying the utmost attention to.
Study on Pressure Relief Scope of Underlying Coal Rock with Upper Protective Layer Mining
Authors: Yuan Ben Qing , Zhang Yong Jiang , Cao Jian Jun , Cheng Guo Jian
Published: August 2013

In this paper,in the case of upper protective layer mining of a mine for the engineering background, based on the model of semi-infinite plane body in elastic mechanics, the theoretical calculation model of verticalhorizontalshear stress of floor coal rock is established, and it is concluded that the stress expression of any point in the impact of distributed force. By introducing the rock strength index I and generalized Hooke's law, it is concluded that the discrimination criterion of guide gas fissure zone and pressure relief desorption belt of underlying coal rock with upper protective layer mining. The pressure relief scope of protection with the mining of upper protective layer is determined. Theoretical analysis shows that: the "pressure relief desorption zone" of the underlying protected coal seam that the vertical distance to the protective layer is 40m lags behind 22.2m.Through field test, the results show that the obtained pressure relief scope of protection is 26.98m,and the theoretical analysis results are basically similar.
Study on Influencing Factor of Ground Deformation Induced by Shield Tunneling
Authors: Xu Meng Lin , Zhao De Shen
Published: August 2013

The complex construction behavior inevitably disturb surrounding environment, even when the tunneling goes through building, which may be wrecked. The security issues of the subway project stems from ground movement and structure dynamic interaction. So it is academic and application good value for study on construction influences of shield tunnel excavation to the neighboring buildings. This paper focuses on the shield tunnel construction strata deformation factors. The results provided the theory basis for safety construction.
Geochemical Characteristics and Comprehensive Utilization of the Main Coal Seams in Wubu Mining Area, Northern Shaanxi Province
Authors: Li Zhi Xue , Li Ming Pei , Shao Long Yi
Published: August 2013

Use a variety of coal analysis methods on the Wubu mining area main coal seams S1 and T1 in proximate analysis, elemental analysis, and technologic property analysis, the results show that the main coal seams is a kind of medium ash, medium volatile coal, especially low-medium sulfur, high calorific value coal. They have a good chemical properties and technologic properties, and can be used for coking, civilian, steam coal.
In Situ Stress Measurement and Inversion in Deep Roadway
Authors: Li Yong , Zhang Yun Yi , Gao Ren Jie , Xie Shuai Tao
Published: August 2013

Jixi mine area is one of the early mined areas in China and it's a typical deep mine. Because of large deformation of underground roadway and dynamic disasters occurred frequently in this mine, five measurement points of in-situ stress in this mine was measured and then analyzed with inversion. Based on these in-situ stress measurement data, numerical model of 3D in-situ stress back analysis was established. According to different stress fields, related analytical samples of neural network were given with FLAC program. Through the determination of hidden layers, hidden nodes and the setting of parameters, the network was optimized and trained. Then according to field measurement of in-situ stress, back analysis of initial stress field was conducted. Compared with field measurement, with accuracy requirement satisfied, it shows that the in-situ stress of rock mass obtained is basically reasonable. Meanwhile, it proves that the measurement of in-situ stress can provide deep mines with effective and rapid means, and also provide reliable data to optimization of deep roadway layout and supporting design.
Mining Project Design under Villages and Comparison Analysis of Mining Method
Authors: Liu Gui , Xu Nai Zhong , Gao Chao , Li Lei
Published: August 2013

In order to solve the problem of coal mining under villages of regions of Yaoqiao Mine, through comprehensive analysis, the author considers that strip mining has feasibility in realistic, meanwhile, a series of mining width and retaining width was studied for strip mining and eventually a mining project was put forward to meet the unique conditions. By comparing application conditions and range of application between continuous miner used in strip type of Wongawilli coal mining method and shortwall shearer mining method, the author analyzes the economic benefit and draws a conclusion that shortwall shearer mining method has better applicability. Those all provide a new way to mining under villages in Yaoqiao Mine and the conclusion can also be used for reference in similar mining conditions.
The Study on Hydrous Pyrolysis Experiments of Coal-Measure Source Rocks in Ordos Basin
Authors: Xue Pei , Wang Yan Bin , Yuan Jun
Published: August 2013

Through the hydrous pyrolysis experiments of coal-measure source rocks in Taiyuan formation in Ordos Basin with different mediums from 250 °C to 550 °C, with a stepwise heating stage of 50 °C, the characteristics of gas and liquid products are discussed systematically in this paper. The results show that the change rule of hydrocarbon productivity of coal with temperature is similar to mudstone. Total hydrocarbon productivity and gas hydrocarbon productivity increase with temperature rise. Liquid hydrocarbon productivity increases with temperature rise first and then decreases. The peak yield of oil of coal appears at the heating temperature 350 °C, mudstone at 375 °C. The peak yield of mudstone lags behind. The non-hydrocarbon gas productivity increases with temperature rise. The non-hydrocarbon gases are carbon dioxide, nitrogen gas and oxygen mainly. The productivity of carbon dioxide is significantly higher than other non-hydrocarbon gas productivities. The main hydrocarbon gas is methane. The productivity of methane increases when temperature rises. And the productivity increases obviously after 400 °C.
Research on Support Technology of Long Anchor in Fully-Mechanized Caving Thick Coal Broken Roadway
Authors: Yang Guang Rong , Li Ji , Wang Fei , Zhao Xi Dong
Published: August 2013

The 5204 transport roadway roof displacement encountered during the tunneling and mining is more than 240mm, which severely damaged the shape of the roadway. The anchor cable of the top is pulled off and supporting failure takes place. According to the analysis of the surrounding rock pressure behavior law, the concept of supporting new technology based on the concept of "coordinating role of long bolt - surrounding rock" is brought up. This technology can achieve a reasonable match of the supporting object with the displacement and support strength of the surrounding rock. Based on this concept, FLAC3D numerical simulation analysis, combined with the engineering analogy method, produces the long bolting parameters on the 5402 transport roadway. The industrial test results show that in the mining face, the force state of the long bolt is good. When larger displacement in the roof appears, the long bolt is not pulled off and the support failure does not occurs .It means the long bolt has adapted the large deformation of the roadway roof. The research results can provide a reference for similar mechanized caving roadway supporting.
Study on Energy and Stress of Irregular Failure Zone of Upper Layered in Slice Mining
Authors: Zhang Xiao Biao , Zhou Kun , Li Hai Tao , Liu Jiao Xia , Zhang Yun Yi
Published: August 2013

Under the condition of the top layered have irregular zone , due to the stress concentration caused by the upper leaf residual coal pillar , lower leaf will increase recovery difficult. This article reappear the scene of irregular top delamination area and the surrounding environment by FLAC3D numerical simulation software, receive the distribution condition of stress, displacement and the elastic energy of media under this condition, provide abundant basis for develop highly targeted production safety measuresa, solve the problem of data range is smaller,because the restriction of the detection equipment and other technical reasons detection equipment under the scene.
The Beneficiaries under the Current Pricing System of Global Mines
Authors: Peng Ying , Chen Qi Shen
Published: August 2013

This essay is initiated by the question as who take the final interests by the price fluctuation of global mines. By analyzing the share structure of four multinational mines corporations and two commodity exchanges, the conclusion is made as that, under the current circumstances of global mines pricing system, the western developed countries and their financial institutions are the final beneficiaries.
Development and Utilization of the Micro-Fine Weakly Magnetic Iron Ore
Authors: Li Feng Jiu , Wang Hui Jing , Zhang Jin Rui , Jia Qing Mei , Zhao Li Bing
Published: August 2013

This paper introduces the status of micro-fine weakly magnetic iron ore separation technology, analyzes the various characteristics of each separation process ,enumerates some production technology examples dealing with such iron ore and points out that the combined aggregation separation technology will have a wide development and application prospects in fine weakly magnetic iron ore sorting and processing areas.
Efficiently Utilizing a Low Grade and Complex Copper Ore by Flotation
Authors: Nie Qi , Zhou Xiao Si , Peng Fen Lan , Shen Xu , Li Zhi Zhang
Published: August 2013

Based on the analysis of the properties of the copper ore from Jinggu area in Yunnan province, a suitable technical route was presented for processing of eligible copper concentrate and the main factors i.e. grinding fineness, Na2S dosage and collector dosage, affecting the quality of roughing concentration was investigated. On this basis, a close-circuit flotation test scheme was preceded, which obtained a high quality copper concentrate with Cu grade of 16.08%, copper recovery of 58.52%. The recovery of copper concentrate is much lower than the Cu recovery of roughing concentrate from the condition experiments. This may be contributed to the fact that fine slime carried by middling worsens the separation of copper minerals and gangues. The Mo was enriched in concentrate, which is significantly considered to recovery in further work.
Experimental Study on Flotation of a Yunnan Sulfide a Low Grade Copper Ore
Authors: Wang Ju , Dai Hui Xin , Guo Yan Hua
Published: August 2013

Based on a single Yunnan copper sulfide, we conducted a series of flotation test research. The results indicate that the raw ore grade is 0.78%,by closed circuit process of 1stage of roughing, 1stage of scavenging and 2 stages of cleaning flotation, 14.85% concentrate grade with 92.49% recovery can be obtained, and the index is ideal.
Construction of New Energy-Saving Building Materials Based on Formal Concept Analysis Methods
Authors: Xu Hong Sheng , Tan Qing , Li Chao
Published: August 2013

New Building Materials is a new generation of building materials, new wall materials, insulation materials and decoration materials. Building energy efficiency in the construction of building materials, building construction and use of the process, the use of new materials, the rational design of the thermal performance of the building envelope and improve the operating efficiency of the heating system to reduce energy consumption. The paper presents construction of new energy-saving building materials based on formal concept analysis methods. Experimental results show that the proposed method has high efficiency.
Mechanics Research with Prediction on the Fatigue Life of the Five-Cylinder Emulsion Pump Crankshaft
Authors: Ran Li
Published: August 2013

In this paper, dynamic mechanics analysis was performed, in order to investigate the maximum forces acting on the crankshaft under working conditions. Then, three dimensional, finite element analyses have been conducted, in an attempt to predict the fatigue crack-initiation locations and lives. The maximum loadings, used in finite element analyses, were analytical obtained, which correspond to the five critical rotational angles of the first crankpin, i.e. = 40 º, 110º, 185 º, 255 º, 325 º. The maximum stress site was found to be approximately on the fillet of the first main journal of the crankshaft. The predicted fatigue life of the crankshafts was obtained by use of a stress-life (S-N) approach.
Numerical Computation and Analysis of Particle Trace Based on Aerodynamic in Heavy Medium Cyclone
Authors: Xia Yu Ming , Xu Zhi Qiang , Tu Ya Nan
Published: August 2013

The theory, model and algorithm of three products heavy medium cyclone flow field were researched, and the heavy medium cyclone flow field was simulated based on aerodynamic. Through the researches, the numerical discrete algorithm of heavy medium cyclone flow field was deduced, the calculation algorithms of heavy medium cyclone flow field were given, the washed coal particle trace, intermediate coal particle trace, gangue particle trace in three products heavy medium cyclone, and the separation rules based on aerodynamic and flow field characteristics of three products heavy medium cyclone were obtained.
Study on Mechanical Automation with Cool-Starting Capacity of the Battery for Vehicles
Authors: Lu Zheng Sheng
Published: August 2013

It is advanced that cool-starting capacity of the battery is the key factor that affects the cool-starting performance of diesel engine. Cool-starting capacity of the battery is mainly affected by these factors,such as, the structure of the polar board, discharge electric current, temperature and density of the electrolyte. By optimally calculating the parameters above, optimal performance parameters of diesel engine at low temperature are received. Two performance tests of the diesel engine at low temperature,both Cool-Starting torque and starting rotate speed,are made on the basis of the cool-starting system of diesel engine,which completely satisfy the cool-starting requirements of the diesel engine at low temperature.
Study on Mechanical Automation with Analytic Method Utilization of Motor Car Engine Failure Diagnosis Fault Tree
Authors: Lu Zheng Sheng
Published: August 2013

In the analysis motor car engine unique feature's foundation, has established based on expert system's motor car engine fault tree, and has carried on the discussion to fault tree's logical relation and the reconnaissance method, to enhance the automobile complete bikes system's reliability to provide the effective measure.
Study on Mechanical Automation with Detection Technology in Central Air-Conditioning
Authors: Zhao Yan Qiu , Gu Yong , Lv Ying Li , Liu Shu Cheng , Li Ya Jie
Published: August 2013

To improve the energy efficiency of central air-conditioning, established a central air-conditioning detection system based on Lonworks. Detection module design of both hardware and software, here focuses on the hardware design. Hardware circuit design using of Echelon's Lon control module. Finally, given the detection effect diagram and achieved good energy saving effect.