bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application Prospect of Coal-fired coupled Biomass in Technical Transformation of Thermal Power Unit
Authors: Chen Xiufang , Yan Hanbing , Guo Liqiang , Liu Fengchun 
Published: March 2020

Abstract
The development of thermal power units in China is restricted. In the process of transformation, coupled biomass power generation is the main direction of the transformation in the fuel sides. This paper introduces the constraints of thermal power units, the main ways of coal-fired coupling power generation, the technical route of coupling biomass in all of 84 pilot thermal power units and the problems faced by coupled biomass power generation. On this basis, some suggestions on the application of coal-fired coupling power generation in enterprises are put forward.
Analysis of Thermochemical Properties of three typical Manganese based thermite
Authors: Zhu Rui , Guo Tao , Yao Miao , Liu Xiaofeng , Wang Qiong , Ding Wen 
Published: March 2020

Abstract
In order to investigate the thermochemical and reactive properties of thermite composed of typical manganese oxides, three common manganese oxides meaning MnO2, Mn2O3 and Mn3O4, are selected in this paper to form aluminothermic agent with Al powder, respectively. According to the chemical thermodynamics, the difference of Gibbs free energy among different components is calculated, and the reaction rate k is calculated according to Eyring equation, then the Gibbs free energy values of three thermite at different ambient temperatures are drawn. Furthermore, according to the theory of chemical reaction calorific value calculation, the reaction calorific values of three thermite at different temperatures are calculated. The results show that the Gibbs free energy of Al/MnO2 system is the smallest at different temperatures, the reaction rate and the enthalpy of reaction of Al/MnO2 are the fastest and the smallest at different temperatures and the heat release is the largest. The results of calculation provide theoretical guidance for experimental design and practice. Under the condition of the same mass of reactants, the discharge heat of MnO2 is the largest, and the heat value of the MnO2 is the highest.
Construction of BIM collaborative management platform for the owner in China
Authors: Dong Na , Huang Qiuyuan , Xiong Feng 
Published: March 2020

Abstract
With the rapid development of information technology, BIM application of all parties in engineering construction is becoming more and more mature. The construction of BIM collaborative platform is the key to information sharing and collaborative work of all parties. Based on the decomposition of the owner’s life cycle project management tasks of China, this paper carries out detailed functional requirements and information needs analysis, and proposes the functional design, basic architecture and information flow of the owner’s BIM collaborative platform, which can provide reference for the construction, selection and application of the owner’s BIM collaborative management platform.
Gas Sensing Properties of 3D Graphene Nanotubes (GNT)@ZnO at Room Temperature
Authors: Dong Lei , Wang Yanyan , Wu Zhekun , Liu Weixiao , Ying Shuyang , Huang Manman , Peng Changsi 
Published: March 2020

Abstract
In this study, nickel nanowires (Ni-NWs) were first grown by chemical method and then graphene was grown on the as-obtained Ni-NWs by CVD route to yield graphene nanotubes (GNTs). The GNTs were then hydrothermally combined with ZnO to construct a gas sensor for detection of NO2. The as-prepared GNT@ZnO sensor displayed high sensitivity towards the detection of NO2 reaching up to 47.5% per 50 ppm NO2. In addition, the sensor exhibited relatively fast response time of 300 s and recovery time of around 200 s under UV light. The sensor also showed good repeatability, making it promising for future applications.
Regional Energy Internet Construction Framework and Key Tasks
Authors: Li Nan , Zheng Kuan 
Published: March 2020

Abstract
Based on the strategic needs of the State Grid Corporation of China in building regional energy Internet, this paper carries out study from the following points: first, analyzing the connotation and characteristics of regional energy Internet; second, building the “three systems” structure of regional energy Interest construction; last, defining the key tasks of regional energy Internet construction from three aspects: infrastructure, technological innovation and market mechanism.
Study on Experimental of Waste Cathode Ray Tube Glass Fine Aggregate in Barite Concrete
Authors: Shi Jianjun , Wang Can , Zhang Zhiheng , Liu Hualiang , Yang Xiaofeng , Ling Yan , Li Qi , Zhang Zhijun 
Published: March 2020

Abstract
In order to study the waste cathode ray tube glass fine aggregate (particle size < 0.15 mm) on barite concreteperformance, the waste cathode ray tube glass fine aggregate is blended into the barite concrete at 0%, 4%, 6%, 8%, and 10% of the mass of the barite sand quality to conduct experimental research on the related properties of barite concrete. The experimental results show that when the amount of waste cathode ray tube glass fine aggregate is 6%∼8%, the prepared barite concrete has the best working performance. The slump expansion reaches 560mm×560mm, and the 28d cube compressive strength is 37.76MPa. The V-box passage time is 17.56s, and barite concrete has the best shielding gamma ray capability.
An Empirical Study on the Influence of Social Capital Control on China’s Energy PPP Project Investment
Authors: Yang Weihua , Li Ling , Fan Feige , Wang Xiushan 
Published: March 2020

Abstract
In order to effectively attract the participation of social capital parties and solve the shortage of project funds, it is necessary to actively explore the factors affecting the investment of energy PPP projects. Based on the data of China Energy PPP project of World Bank from 1995 to 2018, an empirical study was conducted to explore the impact of social capital control rights on energy PPP project investment. The empirical results show that the higher the social capital control right in China’s energy PPP project, the greater the investment in PPP projects; the longer the energy PPP project contract period, the less PPP project investment. The research provides a reference for social capital to participate in the energy PPP project investment decision. It is also recommended that government departments can decentralize management when implementing energy PPP projects in order to better attract investment.
Research Progress on Recycling Technology of Lead-containing Glass in Waste Cathode Ray Tubes
Authors: Jin Yin , Lei Zhao , Tong Xu , Zhilin Zhang , Shuo Li , Wenjie Tang 
Published: March 2020

Abstract
With the development of kinescope technology, the quantity of discarded cathode ray tubes (CRTs) glass continues to increase. The waste CRTs glass contains a lot of lead, which could bring about the environmental risk. Based on the research status on the treatment of lead-containing glass in waste CRTs, the technologies of lead separation and recycling were summarized, and their characteristics and developments were analyzed. It was pointed out that the further research and development of new technologies in this field should pay close attention to two aspects, one is the environmental risk in the product realization process of recycling waste CRTs, and another is the satisfiability to economic feasibility and the recycled productsfrom lead-containing Glass in waste CRTs.
Field test of SNCRDeNOxtechnology in building ceramic industry and the process optimization
Authors: Huang Jianhang , Tang Zijun , Zeng Wenhao , Tang Zhixiong 
Published: March 2020

Abstract
Ceramic industry accounts for considerable amount of NOx emission of industrial sources in China. With stricter air protection act imposed by the Chinese government, many ceramic plants have to install deNOx devices. Among all the de-NOx technologies, selective non-catalytic reduction (SNCR) is barely used in the NOx burning area process-control. In this study, a number of first-hand data focusing on burning area NOx control by using SNCR technology of ceramic roller-hearth kiln were shared, the spraying rate, temperature range, the quantity and arrangement mode of spray guns were studied.Besides, a continuous experiment was carried out. When the spraying rate was 60 L/min, the temperature range was 900-950 °C, and two spray guns were used and arranged as opposite spraying mode, the NOx concentration after purification kept below 25 mg/m3, the removal efficiency was steadily higher than 40% with the average about 50%, and the ammonia escape met relevanttechnical specification.
Study on the heat insulation performance of fire water curtain applied to the connecting passage
Authors: Lv Ke Lei , Liu Wan Fu , Luo Peng 
Published: March 2020

Abstract
It provide a reference for the design of the heat insulation system of the connecting passage of the urban subway traffic tunnel, carry out 1:3 scale model experimental, discussion on the coupling of artificial ventilation and heat insulation water curtain, thermal radiation and temperature change in two tunnels. The results show that the heat insulation water curtain has good heat insulation effect under the coupling of ventilation and water curtain. However, ventilation will cause turbulence of air flow in the connecting passage, and the hot water curtain is easy to drift. Therefore, it is suggested to reduce the ventilation speed as much as possible without backflow of fire smoke, to reduce its impact on the thermal insulation water curtain.
Research on fire test of train compartment based on multi-channel parallel calorimetric system
Authors: Xu Guanzhong , Liu Wanfu , Qi Wuqin , Han Weiping , Xia Jianjun 
Published: March 2020

Abstract
The multi-channel parallel calorimetric system can ensure the test accuracy in the small-scale fire experiment, and also meet the measurement range of the large-scale fire experiment. Based on the test system of the railway rescue station, the solid and liquid combustibles were used for the real fire test, which were carried out outside the train compartment and inside the train compartment respectively. The real fire test was measured HRR, fire load, top maximum temperature. Through the comparison and analysis of the test data, the results showed that when the fire occurred in the confined space was harmer, so it was very important to do a good job of fire prevention and control in the confined space, especially in the tunnel. By comparing the combustion of solid and liquid, the damage of windows will increase the fire hazard.
Numerical simulation of the inhibition process of methane-air explosion under cold aerosol
Authors: Liu Fuyan , Liu Juan , Liu Fujie , Wen Chuanjun , Chen and Xinhong 
Published: March 2020

Abstract
In order to study the methane-air explosion suppression problem, a certain size experimental tube was used as the physical model, and Gambit was used for modelling. The ANSYS 15.0 software was used to simulate the methane-air explosion suppression process under the action of cold aerosol, and the simulation results were compared with the results of the experimental studies in the open literature. It can be seen from the numerical simulation results that the concentration of cold aerosol had a significant effect on the methane-air explosion process. When the concentration of cold aerosol was low, the methane-air would explode. The pressure-time curve in the experimental tube showed four stages: the explosion induction period, the pressure rise phase, the explosion pressure peak value phase and the explosion pressure decay phase. With the increase of the aerosol concentration, the explosion induction period was significantly prolonged, and the maximum explosion pressure was slightly decreased, and the time to reach the maximum explosion pressure was also significantly prolonged. When the cold aerosol concentration reached a certain threshold, the methane-air no longer exploded. Compared with the experimental results, the simulated values of the explosion induction period, the maximum explosion pressure value, the maximum explosion pressure time and the final pressure value under different cold aerosol concentrations matched well with the experimental measurements. Therefore, numerical simulation can provide a reference for the study of methane-air explosion suppression performance under cold aerosol.
Prediction of Remaining Discharge Time of Battery
Authors: Feng Qiming , Qian Suping 
Published: March 2020

Abstract
This paper mainly discusses the prediction of discharge time when lead-acid battery discharge at constant current. For one thing, the functional relationship between the discharge depth and voltage under different currents is established, and the remaining discharge time of the battery is calculated according to the mathematical model, too. Moreover, the average relative error is also calculated. For another, the binary function of voltage U with respect to current intensity I and discharge time t is established, and the MRE under different currents is also discussed. The results show that the first method is better than the second.
Study on the Suppression Effect of Vacuum Cavity on Flame and Pressure Wave
Authors: Zhang Yaping , Ning Ning , Quan Xin , Zhang Shuanwei 
Published: March 2020

Abstract
The vacuum cavity was used to suppress gas explosion, and the explosion flame temperature and pressure in the pipeline were studied at different attachment positions of the vacuum cavity. The results showed that the different attachment positions of the vacuum cavity not only promoted but also inhibited the temperature and pressure of the explosion flame. The effect of the explosion suppression was better at 1.3m from the inlet; the influence of different length-width ratios of the vacuum cavity on the explosion flame and pressure was analyzed under the optimal distance and found that the effect was better when the aspect ratio was 3.
Study on Mechanical Properties of Light Aggregate Concrete for Filled Core Assembly
Authors: Yang Kailin , Fang Guangxiu 
Published: March 2020

Abstract
This paper mainly explores the mechanical properties of lightweight aggregate concrete used for core-filled assembly members. Through the design adjustment of the mix ratio, the results show that the concrete slump is about 100mm, its workability is good, and its compressive strength is lower than ordinary concrete, but it meets the strength design requirements of prefabricated components. By analyzing the tensile and compression ratio and elastic strength ratio, the crack resistance and ductility of light aggregate concrete are better than ordinary concrete, which can provide reference for light aggregate concrete engineering applications.
The Bearing Capacity of The Recycled Concrete Two-Way Composite Slab Tests
Authors: Zhu Xiaohui , Fang Guangxiu 
Published: March 2020

Abstract
In this paper, recycled aggregate from waste concrete is used as coarse aggregate, and fly ash is added to replace part of cement. According to the mixture performance and 28 day compressive strength of ordinary concrete, the optimal mix proportion of recycled concrete is obtained, and then the composite plates of two materials are designed and manufactured by ourselves. By testing the compressive strength of recycled concrete and ordinary concrete, and calculating the bearing capacity of the composite plate, the results show that the recycled concrete designed in this paper has the advantages of good compressive strength, good workable slump and low cost. The composite plate has good bearing capacity in theory and meets the design requirements.
The analysis and solution of contact rubbing fault for low pressure rotor of gas-steam combined cycle turbine unit
Authors: Wu Maosong , Zhao Yuzhu , Meng Fanyang 
Published: March 2020

Abstract
The contact rubbing fault mechanism for low pressure rotor of gas-steam combined cycle steam turbine unit is analyzed deeply in this paper. It is include that the high start and stop frequency of the gas turbine, the special operation mode of the long-time turning and the high designed turbine turning speed are the main reasons for the axial displacement to the inlet side of the fir-tree root and the contact rubbing fault of the low pressure rotor . At the same time, this paper presents a solution to the problem of contact rubbing fault of low-pressure turbine rotor, and analyzes the dynamic stress and vibration frequency of the new blade after technical improvement. The results show that the stress of root and groove of the new blade and the vibration frequency of the new blade can meet the requirements of safe and stable operation of the unit.
Risk Assessment of Gas Explosion Disaster Based on Random Forest Model
Authors: Zhang Qing 
Published: March 2020

Abstract
The risk assessment of gas explosion is difficult to determine due to multiple factors. To solve this problem, a random forest model is applied to the risk assessment of gas explosion disasters in coal mines. Based on the disaster system theory, the pregnant environment, disaster factors and disaster-receiving bodies were used as secondary indicators, and the corresponding 24 tertiary indicators were selected as the evaluation indicator system. The example analysis shows that the accuracy rate of gas explosion risk category prediction of the random forest model is very high (up to 100%), and it is highly practical for small sample problems with high data dimensions; Coal seam spontaneous ignition period led to an average reduction of accuracy of 0.2 and caused the Gini index to drop by an average of 1.5. The average accuracy decrease caused by the qualified rate of air volume at the wind-use site and the coal seam gas content is almost 0, and the decrease of the average Gini index is less than 0.15.
The Impact analysis on non-Stationary Extreme Wind Speed Evolution to Wind Turbine
Authors: Gui Baolin , Shao Jiegui , Liu Wenchun 
Published: March 2020

Abstract
It is highly preferred to evaluate evolution of wind extremes over long time-scale with nonstationarity extreme distribution model. The annual extreme value methods, which single out the maximum wind of each year as sample data, are utilized. Thereafter, the annual wind extremes are test for nonstationarity. Finally, the maximum possible wind extreme is calculated with generalized extreme value distribution model to evaluate the influence of nonstationarity of wind extreme on safety of wind turbines. It is uncovered that the wind extreme in Hailisu, Guaizihu and Chengshantou are non-stationary. However, there is no maximum possible wind extreme and it is a positive impact on the safety of wind turbines. The wind extreme of Hengshan is stationary. The wind extremes of Huangshan is non-stationary and the maximum possible wind extreme over there is 41.416 m/s, which is notable larger than the design wind speed of 37.5m/s of wind turbines. It is of negative impact on the safety of wind turbines.
Study on Principles of Soil Respiration Monitoring and Calibration Improvement Methods
Authors: Wang Xueting , Hu Junguo 
Published: March 2020

Abstract
Soil respiration has an important impact on global climate change and the carbon cycle. Therefore, it is necessary to accurately analyze the principles of soil respiration monitoring. Various monitoring principles tend to deliver partially different results. In order to reduce the difference, it is necessary to explore the ways to improve the principles. The present studies focus mainly on different methods of soil respiration monitoring, but rarely on their relative principles. This paper makes comparison between the dynamic airtight chamber method, the dynamic open chamber method, the gas well method and the model method based on the domestic and foreign literature, and further discusses the calibration improvement methods according to the relevant principles, aiming to reduce the result difference between different monitoring principles.
Regional spatial patterns and influencing factors of Haze Pollution in the Pearl River Delta region
Authors: Yang Yuanhua , Tang Shaojuan , Tang Dengli 
Published: March 2020

Abstract
Based on the Pearl River Delta data from 2006 to 2016, this paper uses exploratory spatial data analysis technology to analyze the spatial correlation and spatial cluster characteristics of haze pollution, and uses the Spatial Durbin Model to analyze the influencing factors of haze pollution. The study finds that there is a certain spatial autocorrelation in the spatial distribution of haze pollution in the Pearl River Delta region. The direct, indirect and total effects of energy consumption on haze pollution are not significant, there is an inverted U-shaped relationship between economic development level and haze pollution, population size and industrial structure will increase haze pollution in the local and surrounding areas, technological innovation in the region has a significant impact on local haze pollution and has no significant impact on it in the surrounding areas, and the impact of FDI on haze pollution is not stable in the Pearl River Delta region.
Research on Optimization of Emission Reduction Scheme for Thermal Power Based on Linear Programming
Authors: Zhao Qiuli , Zheng Kuan , Shen Shumei , Tan Xue , Lei Yang 
Published: March 2020

Abstract
Coal-fired thermal power units emit a large amount of air pollutants, which has aggravated air pollution in China and seriously affected people’s life and health. Therefore, it is necessary to formulate more reasonable emission reduction plans for thermal power units in China, so as to reduce air pollution. In order to maximize the comprehensive benefit of thermal power emission reduction, this paper put forward a method of optimizing the emission reduction scheme of thermal power units based on linear programming, and calculated the emission reductions in future.
Review of risk assessment methods for infectious diseases
Authors: Han Xinxing 
Published: March 2020

Abstract
At present, the global epidemic situation of infectious diseases is becoming more and more serious and complex, which brings difficulties and challenges to the prevention and control of infectious diseases and poses a serious threat to public health and safety. The premise and basis of the prevention and control of infectious diseases is to carry out scientific risk assessment. Firstly, the common risk assessment methods were introduced, and the limitations of these one-time static assessment methods were analysed. Then the dynamic risk assessment methods for the transmission of infectious diseases were introduced, and expressing the transmission of infectious diseases as scenarios was proposed. Scenarios were deduced to predict the future development trends of infectious diseases. It is of great positive significance to evaluate the risks of infectious diseases according to different development trends, and realize the transition from traditional “prediction-response” to “scenario-response” for improving the emergency management capability of the transmission of infectious diseases.
Progress of ecological environment protection and restoration in China’s Giant Panda National Park
Authors: Duan Xiaoyu , Yang Shuhui 
Published: March 2020

Abstract
Giant panda is the world’s flagship species for biodiversity conservation and a unique national first-class protected animal in China. The construction of Giant Panda National Park is of great significance to the protection and restoration of the integrity of giant panda habitat and the improvement of China’s natural reserve system. At present, the protection and restoration of the giant panda national park ecosystem are mainly reflected in the park planning, management organization construction, and national park legislation. This paper summarizes the progress of the construction of the Giant Panda National Park from 2016, and proposes relevant solutions to the existing problems.