bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sedimentary structure characteristics and depositional facies of Paleogene Es4 in Dongying Sag, Jiyang Depression, Bohai Bay Basin, China
Authors: Meng Xu 
Published: May 2020

Abstract
Through recognizing the characteristics of sedimentary structures in the cores, the sedimentary facies of Paleogene Es4 in southern slope of Dongying Sag were recognized. The sedimentary structures included bedding, bed plane structure, contemporaneous deformation structure, and biogenetic structure. Finally, the sedimentary facies, consisting of braided-river delta, alluvial fan, beach dam, and lacustrine, were recognized, which would not only contribute to the petroleum exploration and development in the initial period of Dongying Sag, but also help carry on the basin analysis of the rifted basins.
The application of vibroseis in VSP logging in Sichuan and Chongqing area
Authors: Ge Li , Tang Jian , Zhang Li , Yong Jie , Kang Liang 
Published: May 2020

Abstract
In 1970s, vibroseis was introduced to do seismic exploration in China. After then, vibroseis equipment was researched and produced in China. The electro-control system of the force working on the ground, of vibroseis signal recognizing or installing, and of RT quality-controlling, which is based on the digital self-adapting method, enlarged the application of vibroseis not only the areas but also the quantity in seismic exploration. And then, vibroseis equipment became one of the important seismic equipment. As the producing of shale gas developed, and the traffic conditions improved, the vibroseis equipment and techniques began to work in VSP logging in Sichuan and Chongqing area, south-west of China. The effect of the vibroseis in VSP logging will be analyzed from the theory to the consistence and high S/N ratio of VSP data which be acquired by vibroseis.
Analysis the Influence Factors and Deviation of Gas Outflow in Resumed Mine
Authors: Dong Wang , Hong Ding 
Published: May 2020

Abstract
In view of the problem of insufficient wind distribution basis during recovery, on the basis of analyzing the influence factors of gas outflow in the resumed mine, the research object is taken by the Limin coal mine in Hunan Province, and the gas excitant quantity prediction and deviation analysis are carried out in different production periods when the mine is produced by the source and statistics method. The results show that the mine relative gas outflow prediction error is 6.98 to 19.96 percent, controlled by coal seam thickness and gas content, mining depth geological conditions and other natural factors, while the mine absolute gas outflow prediction error is 20.89 to 44.01 percent, controlled by mining technology factors such as mining scale, recovery schedule and shutdown time.
Application of Directional Long Borehole Technology in Working Face of Thick Coal Seam Along Top Driving
Authors: Shi Yongtao 
Published: May 2020

Abstract
With the increasing of gas content in a coal mine in Shanxi Province, when the coal seam roadway is driving along the top, the extraction effect of ordinary borehole is not good under the complicated geological condition of high gas content and thick coal seam. The traditional “step type” gas control method of ordinary borehole has seriously affected the mine excavation replacement and safety production. In view of the existing problems of gas control in mine heading face, this paper introduces the technology of long directional borehole extraction. Through the field test, investigation, comparison and analysis, the tunneling speed of the tunnel is increased from the original 150m / month to 240m / month; compared with the safe excavation of the 400m roadway, the directional long borehole extraction process was 37 days faster than the traditional ordinary borehole extraction process; the gas concentration in the working face and return air flow was reduced by about 0.3% on average, which greatly reduced the ventilation pressure during the excavation and ensured the safe excavation of the working face. Finally, the extraction technology and parameters of the long directional borehole along the heading face of the thick coal seam are investigated.
Study on energy productivity of patent-intensive industries
Authors: Yuan Qian , Wu Lihua , Zhang Ping 
Published: May 2020

Abstract
Based on the panel data of patent intensive-industries from 2007 to 2016, this paper utilized the Biennial Malmquist-Luenberger (BML) productivity index method to measure and decompose the energy efficiency. The results showed thatthe energy efficiency of patent-intensive industries showed growth trend on the whole and its growth rate was higher than non-patent-intensive industries and the overall industry. Besides, the contribution of structure effect (SE) was the largest and that of total factor productivity (TFP) was the least.Moreover, different industries had different sources of energy efficiency growth. For most industries, technical change (TC), labor-energy substitution effect (LE), and output structure effect (OSE) increased energy efficiency. Therefore, it is necessary to further accelerate the pace of energy conservation, optimize the industrial structure, promote technological progress, and increase the substitution effect of labor on energy for patent-intensive industries.
Sensitivity Analysis of System Deviation of Swing Drive Test Device in Motion Conditions
Authors: Wang Xiaoyan , Gong Zili , Yu Shengzhi 
Published: May 2020

Abstract
The swing test device is a complex electro-mechanical-hydraulic system. The test body floats on the water and is swayed by the hydraulic traction devices on both sides of the pool. The precise control of the test body’s motion state by the hydraulic control system is affected by various external factors. Among them, the manufacturing equipment dimensions, test body weight and shape tolerances, and installation error of the equipment have a particularly serious influence on the control. Through the sensitivity analysis of external interference factors, this paper provides useful reference for device manufacturing, installation, operation, safety strategy, human factors control, etc.
The mechanism of additives to unsupported Ni-Mo hydrodesulphurization catalyst
Authors: Yan Shi , Su Feiming , Wang Xiaoqiang , Yao Zhiwei , Liu Jiaming 
Published: May 2020

Abstract
A series of highly active unsupported Ni-Mo hydrodesulphurization catalyst prepared by coprecipitation method and characterized effect of additives Al2O3 on the structure performance by BET, and Py-IR tests. The results indicated the additives Al2O3 greatly increased the pore diameter and specific surface area and mechanical strength. And it increased the acid of L acid while formatted B acid sites. This paper also characterized the influence of phosphorus to the Ni-Mo catalyst. BET results show that phosphorus blocked the catalyst pore structure, specifically reduced the surface area of the Ni-Mo. But TPR, FT-IR studies have shown that phosphorus can form Al-P-O structure, weaken interaction between active phase and Al2O3, while the amount of tetrahedral Mo species was decreased and octahedral Mo species was increased.
Analysis on Peak-shaving Energy Efficiency of Thermal Power Plant with High Temperature Thermal Energy Storage
Authors: Zhang Hongwei , Liu Junqing , Liang Wenbin , Yu Dong 
Published: May 2020

Abstract
Integration of energy storage infrastructures into electrical grids represents a crucial milestone in the transition towards energy systems with high penetration of renewables. However, the high cost of the currently available technologies is a significant barrier for their implementation on the industrial scale. High temperature thermal energy storage systems, in combination with bottom steam cycles, are being investigated as potential cost effective alternatives to traditional large-scale energy storage technologies. In this study, by adding a high temperature heat storage device in the cold (hot) section of the reheating pipeline and taking the 300MW extraction steam turbine as the research object, it is concluded that the introduction of the high temperature heat storage device can improve the consumption of wind power and greatly reduce the power supply of the coal-fired unit. The coal consumption rate is analyzed. The ideas and methods for solving the energy consumption of the renewable energy and reducing the peak energy consumption are provided.
Research on the Computer-based Excel Program on Fuel Changeover and Energy Consumption in ECA (SECA)
Authors: Li Feifei , Dang Kun , Song Dongdong 
Published: May 2020

Abstract
Upon entry into force of Annex VI to MARPOL on the 19th May 2005, the sulphur oxide (SOx) emissions from ships are controlled by setting a limit of 3.5% on the sulphur content of marine fuel oils[1]. The computer-based excel program on fuel changeover and energy consumption is specifically formulated to assist the engineers regarding how to obtain the time required as well as the fuel consumption during the changeover of fuel oil. It shall be utilized effectively when preparing the plan for the fuel changeover when vessel is to enter ECA/SECA.Therefore, the calculation of fuel changeover in ECA (SECA) is critical.
Study on Protection of Xinghu Wetland in Zhaoqing
Authors: Zhang Hong 
Published: May 2020

Abstract
Zhaoqing Xinghu Wetland is a city center wetland. Due to the recent urban development and a lack of supplementary water resources, the landscape pattern of Xinghu Wetland has changed, and the original ecosystem services of the wetland have been degraded. From the perspective of landscape ecology, referring to the Steinitz landscape design method, this question is problem-oriented, asks questions, collects data, and then analyzes the solution to the problem, explores the ecological restoration of Xinghu wetland, partitions the wetlands, and organizes the protection planning in stages. Focus on water environment treatment planning, reduce human interference, and let nature do the work. The implementation results show that the ecological environment of Xinghu Wetland has been effectively restored, and the Steinitz landscape design method has important reference value for ecological landscape design.
Linear Discriminant Analysis and Adaptive Neuro-fuzzy Inference System Development of Gas Insulated Substation
Authors: Meng Dedong 
Published: May 2020

Abstract
In this study, a PD defect identification system based on linear discriminant analysis and adaptive neural-fuzzy inference system is developed. The partial discharge signs of the typical defects of GIS were measured with a measuring device. The corresponding characteristic parameters extracted from the gs were then filtered according to the optimization algorithm and stored in the form of three-dimensional discharge mode(q-φ-t). After that, the 3D discharge mode is transformed into statistical parameters. Statistical PD features can be used for defect classification purposes, but are obvious. Processing such a large database would be inefficient for that purpose. Therefore, it would be very helpful to select those features that are more effective and more efficient to identify and distinguish potential PD defects through their relevant statistical parameters. Select feature extraction techniques for dimensionality reduction. In solving pattern classification problems, feature extraction methods are usually used as pre-processing techniques, which can not only reduce the computational complexity, but also achieve better classification performance by reducing irrelevant and redundant information in the data.
Research progress of indoor air purification technology
Authors: Qiao Chunzhen , Ji Kai , Zhang Zhen 
Published: May 2020

Abstract
Filtration, adsorption and photocatalysis are widely used in the purification of indoor air pollutants as three commonly used air purification methods. The methods to improve the purification efficiency of air purifiers and the factors affecting the purification efficiency have been widely studied. This paper briefly describes the main purification principles of the three air purification technologies and reviews the influence of filter size, filtration wind speed, particle size, particle size of adsorbed material and filling amount on purification efficiency and the amount of clean air produced by photocatalysis. Coupling the use of single purification technology with other new building technologies, as well as simplifying the regeneration process of adsorption and catalytic materials, and achieving the recycling of filter materials are the future research directions.
Determination of the total petroleum hydrocarbons in aquatic products by fluorescence spectrophotometry
Authors: Ye Hongli , Tian Liangliang , Shi Yongfu , Yu Huijuan , Cai Youqiong , Xi Yanfeng , Tang Yunyu , Zhang Zhengquan , Huang Dongmei 
Published: May 2020

Abstract
The paper studied the determination of total petroleum hydrocarbon (TPHs) in aquatic products by fluorescence spectrophotometry method. To be suitable for the detection of TPHs in various aquatic products, the pretreatment conditions of the approach were optimized, such as the saponification temperature, saponification time, the adding order of anhydrous ethanol, the addition amount of extraction agent. The established method showed a good linearity in the TPHs range 0.0 ∼ 40.0 μg/mL (R2 = 0.9965) with the limit of detection (LOD) 1.36 μg/mL and the precision of 6.1 % (relative standard deviation, RSD). The addition standard recoveries were 72.8 % ∼ 88.4 %. Finally, the method was successfully applied in detection of TPHs in the various aquatic products.
Study on determination of titanium in Ni-Ti-Nb shape memory alloy by diantipyrylmethane spectrophotometry
Authors: Dai Yichun , Tian Lunfu , Zou Deshuang , Cao Shicao 
Published: May 2020

Abstract
Titanium was one of the main chemical components in Ni-Ti-Nb shape memory alloy. It has high content, narrow range and requires high precision of analytical method. In this study, diantipyrylmethane spectrophotometry was established for the determination of titanium in Ni-Ti-Nb shape memory alloy. The method major interference factors such as dissolve sample, absorption curve and the condition of color reaction were investigated and the analysis conditions of determining titanium were experimentally determined. Beers law was obeyed in the concentration range of 0mg/L ∼ 9.0mg/L of Ti. The relative standard deviation of was below 0.3% for the samples (n=6).
Comprehensive utilization system of waste heat of hydrogen fuel cell powered ship
Authors: Xu Xingang , Wang Shihao 
Published: May 2020

Abstract
At present, about 50% of the energy of hydrogen fuel cells is converted into heat energy loss, and the comprehensive energy utilization technology is still immature. For the transport ship powered by proton exchange membrane hydrogen fuel cell, a set of comprehensive waste heat utilization system was designed through theoretical calculation and simulation analysis. A set of self-adaptive controllers with PLC (Programmable Logic Controller) as the core and fuzzy PID (Process Identification) control law based on the collected operating parameters and environmental parameters of each module was developed to control the input energy of each module. Based on the fuel cell-powered green ship technology, this system realizes the cogeneration of low-grade heat sources of hydrogen fuel cells, which greatly improves energy utilization efficiency. The results can promote the application of fuel cells in ships.
Study on preparation method of aircraft composite skin considering electromagnetic shielding
Authors: Yushoumiao  , Zhao Yuliang , Yu Xiangyang , Yao Linghong , Zhao Shi , Yu Chunfeng 
Published: May 2020

Abstract
As the airborne mission system is increasingly concentrated in a small space, airborne electromagnetic compatibility becomes worse. And the electromagnetic shielding performance of this body mechanism can be improved by blocking its radiation path. Considering the aircraft non-metallic skin properties such as strength, plasticity and resistance to corrosion, by vacuum evaporation, vacuum coating, chemical vapor deposition and dispensing under laboratory conditions and adjusting the material, layer thickness and process parameters, several examples of multiple layers of electromagnetic shielding composite materials are prepared, which has important meaning for engineering practice.
The pressure drop funnel method was used to evaluate the discharge range of each layer
Authors: Mao Zhenglin , Huang Yougen , Yuan Lin , Liu Jiaojiao , Li Qian , Jiao Tingkui , Chen Di 
Published: May 2020

Abstract
The east side of yulin gas field belongs to the multi-layer gas reservoir, and the dominant vertical layer is not prominent. At present, there is a lack of productivity evaluation method for single well of multi-layer system, and the scope of discharge and control factors of small layer of gas well are not clear. Based on the well pattern data, geological and test data of the eastern yulin gas field, and referring to the development experience of similar blocks at home and abroad, the production evaluation of gas Wells and control reserves evaluation of multi-layer gas reservoirs were completed, the reserve production characteristics, discharge range and control factors of multi-layer gas reservoirs were clarified, and the well spacing of well pattern was optimized.
Effect of Mental-Doped on Thermal Properties of K2CO3-Na2CO3 eutectic salt/magnesium oxide Composites for Thermal Energy Storage
Authors: Tan Hui , Zhang Gaoqun , Chang Liang , Deng Zhanfeng , Xu Guizhi , Song Xiaoyun , Cai Linhai , Han Zhibo 
Published: May 2020

Abstract
In this work, Na2CO3-K2CO3/MgO composites with MgO serving as supporting material and Na2CO3-K2CO3 eutectic salt acting as thermal absorbing materials were prepared by the form-stable technique. Besides, the possible effects of Cu, Fe and Al on the thermal properties of the composite were investigated. The thermal properties including phase composition, latent heat and thermal conductivity, etc. were measured using X-ray diffraction, differential scanning calorimetry, thermal constant analyzer and thermogravimetric analysis, etc. The X-ray diffraction results show that Na2CO3-K2CO3 and MgO have good chemical compatibility. The differential scanning calorimetry results show that the melting point of the Na2CO3-K2CO3/MgO composites is 707.5°C and its enthalpy of fusion is 67.98J/g. The thermal constants analyzer results indicate that the addition of metal powder can improve the thermal conductivity of the sample, but the increase rate is not obvious because of its oxidation in the air, some even reduce the thermal conductivity.
Life Estimation Method for super capacitors Used in Wind Turbine Pitch
Authors: Xiong Guozhuan , Zhang Yuechao , Zhang Jinqiang , Hu Peng , Yang Peiwen 
Published: May 2020

Abstract
At present, various wind farms in the industry have not established a service life based on the actual situation of super capacitors used in the wind turbine pitch system, a new method for estimating the life of super capacitors is proposed. The first step is to collect the charging voltage value and the annual temperature data value of the capacitor cabinet of a wind turbine, and then calculate the actual operation time of the super capacitor at each temperature point. Secondly, we use the life estimation formula to calculate the estimated operating life of the super capacitor at each temperature point, Finally, we use the method of life conversion to convert the actual operation time of super capacitor at each temperature point into the operation time of super capacitor at a specific temperature point in a year, and then the estimated life value of super capacitor is calculated. This new method for estimating the life of super capacitors takes into account the differences in the local environment of wind farms across the country, as well as the influence of the actual operating environment difference of each wind turbine on the life of super capacitor. The proposed method plays an important role in the regular maintenance and replacement of the super capacitor used in the wind turbine pitch system.
Effect of Xihuang Pill on microcirculation in DMBA combined estrogen and progesterone induced breast precancerous lesions rats
Authors: Li Dehui , Su Yifan , Fan Huanfang , Sun Chunxia , Han Changhui , Ma Pan , Yan Jiaojiao 
Published: May 2020

Abstract
Objective: To observe the effect of Xihuang Pill on microcirculation in 7,12-dimethylbenzoanthracene (DMBA) combined estrogen and progesterone induced breast precancerous lesions rats. Method: DMBA combined estrogen and progesterone were used to establish the model of breast precancerous lesions for 10 weeks in SD rats, then the low, medium and high dose Xihuang Pill (0.27, 0.55, 1.37g·kg−1) was given intragastric administration, and tamoxifen (4 mg·kg−1) was given intragastric administration as a positive control after the breast precancerous lesions models established successfully. The breast microcirculation was measured by laser Doppler flowmetry (LDF) in rats after 4 weeks of Xihuang Pill and tamoxifen intragastric administration. Result: Compared with the normal control group, the microcirculation perfusion of breast in the disease model group decreased significantly (P < 0.05). Compared with the disease model group, the breast microcirculation perfusion in each dose group of Xihuang Pill increased significantly (P < 0.05). Conclusion: The mechanism of Xihuang Pill in the treatment of breast precancerous lesions may be related to the improvement of breast microcirculation.
Research on Energy Optimization Method of Virtual Power Plant Considering Coordination and Interaction of Source-Load-Storage
Authors: Yuan Zhiyong , Huang Andi , Lei Jinyong , Gu Yanzhang , Guo Zuogang , Bai Hao , Wu Chenshuo 
Published: May 2020

Abstract
Developing renewable energy generation such as wind power and photovoltaics is an effective way to cope with energy shortage and environmental problems. The virtual power plant (VPP) realizes the grid-connected operation of intermittent distributed renewable energy by aggregating multiple types of distributed energy resources. In order to achieve the energy optimization problem of the VPP, an optimization method of VPP considering coordination and interaction of source-load-storage is proposed in this paper. First, models of components in the VPP are established. Next, an energy optimization model of the VPP considering coordination and interaction of source-load-storage is constructed. Finally, a case is studied to verify the correctness and effectiveness of the method. The results show that the coordinated consideration of distributed generation, energy storage and demand response loads contributes to reducing the operating costs and carbon emissions of the VPP.
Research on Optimization Method of Physical Asset Management in Distribution Network Based on BIM
Authors: Ye Lingjie , Gong Jinjin , Lao Yongchang , Jin Shaojun , Chao Chen 
Published: May 2020

Abstract
Under the new situation, the physical asset management of power distribution enterprises should actively adapt to the new situation of reform and development, and continue to innovate and make breakthroughs. Therefore, it is necessary to study and analyze the impact of the reform of the power system on the physical asset management of the distribution network, summarize the current status quo problems of the physical asset management of the distribution network in terms of asset formation, equipment asset linkage, value management, etc., and identify different businesses after the power reform In the scenario, the needs for physical asset management of the distribution network, with the help of advanced all-information digital model technology, promote the optimization and improvement of the physical asset management level of the distribution network, and lay a solid foundation for grid companies to actively adapt to the new situation in the market environment. “Core, market is fundamental” corporate strategy provides effective support.