bluuebunny/crossref_metadata_2025_split huggingface dataset:
Life cycle assessment of sewage sludge treatment in China
Authors: Wang Xin , Yu Fuyang , Fan Qingxin 
Published: August 2019

Abstract
Taking sewage sludge (SS) as the research object, establish 6 scenarios of sludge treatment, S1: concentration and dehydration-cement preparation (CdCpd); S2: concentration and dehydration-lime stable-cement preparation (CdLsCpd); S3:concentration and dehydration-drying-landfill (CdDrL); S4: concentration and dehydration-drying-incineration-landfill (CdDrIL); S5: concentration and dehydration-drying-incineration-concrete preparation (CdDrICp); S6: concentrate-anaerobic digestion-land use (CALu), LCA is used to compare the environmental impacts of S1-S6 in China, find the unit that has a greater impact on environment in different treatments and substances and energy that have a greater impact on the environment in different units. The results show that the environmental impacts dealing with 1t SS (water content 80%) can be sequenced as S3 > S4 > S5>S6 > S1 > S2; the direct pollutants generated in the unite of direct landfill and incineration and the thermal energy required for drying have a great impact on the environment; after a series of treatments of SS for concrete preparation and cement preparation, that is, resource utilization can fix certain elements in the sludge, so that the environmental impact can be alleviated; the transfer of contaminants during the SS treatment process is a matter of concern, so that the focus of the SS treatment should be on the fixation of pollutants in the future.
Influencing factors and forecast of carbon emissions from transportation - Taking Shandong province as an example
Authors: Zhang Heng , Kong Xue , Ren Chuanxiang 
Published: August 2019

Abstract
Under the severe situation of global warming, reducing carbon emissions is an important trend in today’s society. Based on the 2003-2015 Shandong Province transportation energy consumption data, this paper uses the top-down method to calculate the carbon emissions of transportation in Shandong Province.On this basis, the grey relational degree analysis method is used to study the impact of seven factors, namely per capita GDP, total population, energy consumption per unit GDP, private car ownership, tourism income, freight turnover and passenger turnover, on the carbon emissions of transportation in Shandong Province. According to the analysis results, the above influencing factors are closely related to the carbon emissions of transportation in Shandong Province. The impact degree is from large to small: passenger turnover > freight turnover > per capita GDP > total population > energy consumption per unit > tourism income> private car ownership. At the same time, using the gray prediction GM(1,1) model to predict the carbon emissions of transportation in Shandong Province from 2016 to 2021, it is concluded that the carbon emissions of transportation in Shandong Province will continue to grow in the next few years.
Optimization of Leachate Treatment in Low Temperature by DTRO
Authors: Long Tao , Xu Xiaojun 
Published: August 2019

Abstract
The operating conditions of landfill leachate treatment by DTRO (Disk Tube Reverse Osmosis) was long-term monitored in a plateau area of Southwest China, and low-temperature leachate was preheated by the LFG (Landfill Gas) heating system. DTRO operating pressure was observed, then the mechanism analyzed and optimization methods recommended. The results show that the operating pressure reached the highest value of 57.87 bar when the leachate temperature is lower than 14°C. And the pressure dropped from 56.2 bar to 49.5 bar when the leachate was heated by LFG heater from 14°C to 22°C. The system performance can be improved by adjusting the temperature into a proper range. And leachate concentrate treatment by afterheat of the burner is also discussed.
Study on the Land Ecological Security and early warning in Shenzhen
Authors: Wang Meijuan , Li Yang , Huai Yangyang , Wang Xin 
Published: August 2019

Abstract
Land is the foundation of human survival and development, and safe land ecological condition is the decisive factor in ensuring security and stability. As the land use intensity continues to deepen and the scope continues to expand, its irrational use has caused a series of ecological security problems. Therefore, studying the relationship between land use and ecological security in the region has become an urgent problem for the current land science. Based on the improved TOPSIS method, this paper constructs a comprehensive evaluation model of urban land ecological security. The results show that land ecological pressure contributes the most to the land ecological security system. The increase of urban population density, the expansion of construction land and the increase of industrial waste emissions will affect the ecological security of the land; since 2004, Shenzhen’s land ecological security and development has gone through several stages, from primary ecological coordination to good ecological coordination - ecology Hysteresis type. It is necessary to vigorously establish and improve the land ecosystem. Besides, we need to actively carry out land ecological security warning supervision and promote the maintenance of land ecosystems and the sustainable use of land resources in Shenzhen.
Research on prediction of municipal solid waste production based on Grey Relation Analysis and Grey Prediction Model
Authors: Fan Zhiguo , Fan Yanjun 
Published: August 2019

Abstract
The amount of municipal solid waste (MSW) is the basic data of municipal solid waste management. It is an important basis for urban green planning to predict MSW output scientifically and accurately. Therefore, first this paper uses Grey Relation Analysis, and points out that the main factor affecting the production of municipal solid waste is the urban resident population. Then the Grey Prediction Model is used to predict the amount of MSW in Shanghai from 2005 to 2020. The prediction results show that the amount of MSW in Shanghai will reach 8.86 million tons in 2020. Finally, in view of the above analysis, this paper puts forward some countermeasures, so as to provide reference for the future environmental planning in Shanghai.
Response of plant functional traits to climate change
Authors: Zhang Jing , Li Pengzhan 
Published: August 2019

Abstract
Climate change has caused serious impacts on the ecosystem, including destroying the stability of the ecosystem and affecting the biodiversity of the ecosystem. Plant functional traits show good response and adaptation to environmental changes, and the change of plant functional traits will indicate climate change. It is a hot research topic to identify the mechanism of the effects of plant functional traits on climate change. By studying relevant references, this paper conducted in-depth studies on leaf functional traits, root traits and the relationship between leaf and root traits among plant functional traits. On this basis, the direction of climate change was further clarified by predicting the development trend of functional traits, and the relationship between plant functional traits and climate change was further discussed.
Research progress on contaminated soil remediation materials based on soil organic reconstruction
Authors: Li Gang , Lu Nan , Wei Yang 
Published: August 2019

Abstract
Soil pollution is cumulative, hysteretic, concealed and irreversible, and it is generally difficult to recover and control soil pollution. According to many years of engineering practice, Shaanxi Provincial Land Engineering Construction Group put forward the core idea of land engineering--organic reconstruction, which provides new ideas and methods for the study of soil restoration. The core of land organic reconstruction lies in material and structure reconstruction. According to local conditions, organic reconstitution can achieve good results in contaminated land restoration.
Research on Urban Eco-environmental Problems and Sustainable Development
Authors: Xing Chenchen , Ding Yu 
Published: August 2019

Abstract
In the process of rapid urban development, the following issue is the ecological environment problems. How to alleviate the contradiction between economic development and ecological environment and promote sustainable development has become a topic of wide concern. The ecological environment of a city is affected by many factors. Only by dealing with the environmental problems in urban construction can the environmental quality of the city be guaranteed and the sustainable development of the city be promoted. Based on the reality, this paper analyses the problems of urban ecological environment, and puts forward relevant strategies and suggestions for the sustainable development of urban ecological environment.
Applied research in volatile organic compounds (VOCs) emission from asphalt pavement
Authors: Zou Bo , Ran Deqin , Zhang Qingtao , Li Chengcheng , Lu Linguo , Fu Jiancun 
Published: August 2019

Abstract
Volatile organic compounds (VOCs) volatilize in quantity during production and application of asphalt. The VOCs will not only cause environmental pollution, but also affect the properties of the pavement. Therefore, the VOCs emission from asphalt pavement is a very worthwhile concern. A brief review concerning VOCs from asphalt pavement, effect of VOCs and measures to mitigate VOCs emission is presented.
Heavy metal pollution comprehensive evaluation of contaminated soil in lead-zinc mining area based on the fuzzy mathematics
Authors: Fang Zengqiang 
Published: August 2019

Abstract
A new comprehensive evaluation method of heavy metal pollution based on the fuzzy mathematics was constructed. The results showed that mean concentrations of the heavy metals in the contaminated soils decreased in the order of Zn > Pb > Cd>Cu > As>Ni>Cr. Leaching experiment results showed that concentration of heavy metal in leaching agent of soil is not proportional to the content of heavy metal in soil. Through fuzzy comprehensive evaluation, the solid soil environmental quality grade was heavy pollution and leaching liquid water quality standards was grade V.
Density Functional Theory Study of Li3VO4-δ
Authors: Shi Jianjian , Wang Zhiguo 
Published: August 2019

Abstract
The large intrinsic band gap of Li3VO4 hinders its potential application as anode material for lithium ion batteries. Here, we perform first-principles calculations to investigate structural relaxation, formation energy, surface energy and electronic structure. The O vacancy in the Li3VO4-(110) surface can enhance charge transfer and to improve the electron conductivity. This work indicates that Li3VO4-δ would be a potential anode material for batteries due to greater electron conductivity than the pristine Li3VO4.
Analysis on the change of coal consumption of low-pressure (low temperature) economizer unit
Authors: Chen Feng , Chen Yingtao , Xue Fangming , Su Jingcheng , Sun Yiqing , Liu Xiuru 
Published: August 2019

Abstract
This paper discusses the calculation of coal consumption for power generation when the unit uses steam extraction as a low-pressure (low temperature) heat recovery source. The calculation of coal consumption for power generation when the unit uses low-pressure (warm) economizer as a low-pressure (low-temperature) heat source, the heat source is not recovered. At the same time, the coal consumption of power generation was compared, and finally the reduction of the heat rate of the turbine was discussed as a decrease in coal consumption.
Analysis and Treatment of Abnormal Vibration of Steam Feed Pump Towards 660MW Steam Turbine
Authors: Li Wanjun , Li Xiaoxia , Niu Qingliang , Dong Yang , Zhang Deke , Huang Tianqi 
Published: August 2019

Abstract
The driving end of B steam feed pump vibrates greatly when steam turbine is in normal operation. Through fault diagnosis and analysis, reasons for vibration were checked and solution found. It mainly caused by mass imbalance of feed pump rotor. A kind of solution has been proposed, and potential equipment safety hazard were eliminated successfully.
Electrospinning Sn@C nanofibers for high-performance flexible lithium ion battery anodes
Authors: Li Jing , Zou Peichao , Wang Ronghe , Yang Cheng 
Published: August 2019

AbstractLithium ion batteries are considered as one of the most important energy storage devices in the field of portable electronics and electric vehicles. However, exploring novel and high-performance electrode materials are still urgently needed, as the state-of-the-art lithium ion batteries cannot meet the ever-increasing demand for high energy/power densities. Metal tin and its oxides are promising lithium ion battery anodes, but suffering from drastic volume change and crack issues during lithium intercalation/deintercalation cycling. Here we report a feasible technology to fabricate flexible and free-standing Sn@C nanofiber membrane via electrospinning method, consisting of one dimensional carbon matrix with Sn nanoparticles confined inside. Owing to the superior electron/ion transfer ability and confinement effect from the carbon coating, the as-obtained Sn@ C electrode exhibits a capacity of 668 mA h g−1at 1 A g−1even after 350 cycles and a reversible capacity of 263 mA h g−1can be achieved at an ultrahigh current density of 10 A g−1. In all, this work provides a promising anode for practical application on lithium ion batteries.
Discussion on the reformation plan of full-section sampling device and precision ammonia injection control technology for denitration system of a 300MW unit
Authors: Xue Fangming , Su Jingcheng , Sun Yiqing , Liu Xiuru 
Published: August 2019

Abstract
Since the denitration efficiency adjustment method is extremely limited during the operation of the unit, the internal flow field of the denitration reactor is not clear, the denitration efficiency of different catalyst modules cannot be monitored, the ammonia spray is blind, and the ammonia injection amount is difficult to control. Especially under the condition of ultra-low load, in order to ensure that NOX meets the requirements of ultra-low emission, it is necessary to increase the amount of ammonia spray, resulting in large ammonia escape and high risk of air pre-blocking. For this problem, the full-section sampling device for denitration reactor and The optimization and optimization scheme of precision ammonia injection control technology is discussed.
Comparison and Selection of Three-Core Cable and Single-Core Cable
Authors: Liu Chunyang 
Published: August 2019

Abstract
The selection of three-core and single-core power cables generally follows the following rules: three-core cables are selected under the condition of 6-10 kV voltage, and single-core cables are selected when the voltage level is 66 kV or above. However, 35 kV voltage grade cable has both three cores and single core. How to choose the right one is a difficult problem for engineers and technicians. Through the analysis and comparison of 35 kV three-core cable and single-core cable, the applicable environment and conditions of each cable are defined, which can provide reference and help for the majority of electric power technicians in choosing cable in engineering practice.
Summary of gas turbine power generation technology based on solar power
Authors: Liu Can 
Published: August 2019

Abstract
With the increasing pressure of energy shortage and the environment pollution, it’s important to take the advantage of the renewable clean energy for newpower generation technology. Solar energy, as a kind of energy with a wide range of sources, has become a new type of clean energy with the most potential for development. This study introduces the project test and progress of solar gas turbine combined generation technology at home and abroad as well as the research status of key technologies. The key technologies of heat collection, heat storage and heat recovery are analyzed and summarized, it has been pointed out that the concentrator ratio achieved by the dish and tower is more than an order of magnitude higher than that of the linear Fresnel and slot; Thermochemical heat storage technology has the theoretical maximum energy storage density, the heat storage of chemical bonds is about 5 times of latent heat, 10 times of sensible heat, and has the advantages of stable chemical bonds, small energy loss and other advantages, energy storage in the future has more development advantages. At the same time, the future research direction of solar thermal power generation technology is prospected.
Research and Analysis of Environmental Sustainability Based on Disposal of Waste Materials in Power Engineering Projects of Power Supply Enterprises
Authors: Yang Jie , Liu Hongxia , Liang Jian , Huang Jianmin , Xia Tao , Ye Yu , Liu Xiaoshuang , Zhang Hao 
Published: August 2019

Abstract
In recent years, in order to meet the needs of social and economic development, to build a strong power grid, power supply enterprises have invested a large amount of funds for power grid construction and upgrading. Under such circumstances, it is of great significance to deal with the disposal of waste materials, as well as to control investment costs, increase investment returns, and ensure the disposal of waste materials and environmental sustainability of power engineering projects. This thesis systematically analyses the situation of waste materials in the social grassroots, and studies its current situation and existing problems. Finally, from the professional point of view, the sustainable development of power supply enterprises in the future, and how environmental factors are sustainable.
A Schedule Power Flow Generating Method Based on State Estimation
Authors: Huang Yupeng , Li Lixin , Wang Lei , Yang Xiaonan , Lv Yan , Zhu Jingkai 
Published: August 2019

Abstract
Generating schedule power flow rapidly and accurately is an important step in security checking. In consideration of poor convergency property and calculating speed of conventional methods based on power flow calculations, this paper proposes a schedule power flow generating method based on state estimation to calculate schedule power flow. Pattern recognition is used to select similar section by comparing planned data and historical power flow to take the power flow of similar section as redundant measurements of state estimation. In state estimation calculation with transmission power constraints based on maximum correntropy criterion, measurements corresponding to generation schedule, load forecasting and maintenance schedule are assigned large weights. The schedule power flow calculated by the method could satisfy planned data conditions and transmission power constraints. Cases of IEEE 9-bus system and a practical power grid vertify the effectiveness and calculating accuracy of the method.
Forecast of China’s Power Generation Demand Trend Based on Scenario Prediction Method
Authors: Gao Chunjiao 
Published: August 2019

Abstract
This paper mainly studies the application of scenario prediction method in the forecasting of China’s generating capacity, and conducts an empirical analysis with data of China’s generating capacity from 1994 to 2017. Firstly, use the regression analysis method to fit sequence data. Taking the relationship between generating capacity and GDP into account, a China’s prediction model of generating capacity can be established. Then, consider in two different scenarios and get the predicted value of GDP model in different scenarios. At last, apply the regression model to the predicted trend of China’s generating capacity in 2018. Finally, a comparison with the real value of generating capacity in 2018 shows that the prediction error is within a controllable range, and it indicates that the scenario prediction method is of certain practical significance in predicting this macroeconomic phenomenon.
An Experimental Test To the High-Low-Voltage-Coupler Which Is Used In the Two-Sources-Driven Underwater Spark Acoustic Source
Authors: Wang Yibo , Zhang Jinju , Peng Fang 
Published: August 2019

Abstract
In this paper, a new type of two-sources-driven underwater spark acoustic source (TSD-USAS), is suggested. Then, the main mechanism and design principle of the high-low-voltage-coupler, which is the key part of TSD-USAS, is discussed. Finally, an experimental measurement to the backward voltage-penetration of the high-low-voltage-coupler, is implemented (at conditions of the HV capacitor: C
H = 1 μF, U
0 = 15 kV). The experimental results show that, when the HV discharge of the right-hand-side part (traditional USAS) leads to a non-breakdown, no apparent backward voltage-penetration will appear at the low voltage input terminal of the high-low-voltage-coupler; when leads to a breakdown, a backward voltage-penetration (peak value of +6200 V, pulse width of 17 μs) will arise.
Research on Cyclic Time Domain Extrapolation of Diesel Engine Crankshaft Load Spectrum Based on SVR Model
Authors: Xu Jinhao , Luo Qingguo , Jing Qi , Liu Xin , Lu Jun 
Published: August 2019

Abstract
The load spectrum is primarily used to provide a dynamic raw input of a basic load change to the component for simulation calculations or fatigue tests of fatigue life. In the load spectrum compilation of engine crankshaft, in order to preserve the influence of load sequence effect on fatigue damage during extrapolation and improve the accuracy of time domain extrapolation, this paper proposes a cyclic time domain extrapolation method based on SVR model. The research results show that the machine learning model has good learning ability and generalization ability, and the time domain extrapolation method can better realize the expansion of the measured samples of the crankshaft.
Effects of Coke Charging Pattern on Burden Distribution and Normal Force Distribution in COREX Melter Gasifier
Authors: Han Lihao , Li Yuehua , Liu Yanxia , Huang Weiqing , Qi Suci , Guan Xin , Yuan Jianlu 
Published: August 2019

Abstract
Based on the principle of discrete element method (DEM), a 2D slot model of COREX Melter Gasifier (MG) being used to study the burden movement under different coke charging patterns has been established. Two kinds of coke charging patterns were introduced to be used to analyze the burden movement in MG. The burden distribution and normal force distribution were analyzed by using the proposed model at a microscopic level. The results show that the burden movement under different coke charging patterns presents different burden movement phenomenon.
A Review of Studies on Temperature Field Changes of Solid Rocket Engines under Different Environments
Authors: Li Jian , Xu Zeliang , Ai Chun’an , Wang Xueren 
Published: August 2019

Abstract
At home and abroad this paper summarizes the present stage of solid missile motor and the loading of the temperature field of research, the analysis of environment includes variable temperature load, surface vessel, warehouse storage for a long time, cooling solidification, by special heat load, etc., the results verify the reliability of the principle, put forward some new model and algorithm formula, and provide certain guiding significance to the reality.
Near infrared light excited sensors NaYbF4@ NaYF4
Authors: Huang Yanjie , Zhou Jinyan , Chen Zhanlin , Ke Can , Li Xiaojing , Huang Zhenyu , Lin Keng , Wang Yuan , Guan Yan 
Published: August 2019

Abstract
The luminescence and temperature response characteristics of NaYF4 containing 15% NaYBF4 were investigated. NaYbF4@ NaYF4 has good thermal stability and excellent response characteristics in the temperature in the range from 300 to 500 K, which significantly increases the upper limit of temperature detection of ytterbium temperature sensor. A self-calibration relationship between the reciprocal of temperature and the natural logarithm ratio of luminescent intensity has been discovered. Compared with the values of ln(I
1048/I
967) or ln (I
947/I
967) in Yb3+ emission spectra, the relationship between ln (I
990/I
967) and 1/T is not linear, but exponential attenuation relationship with better temperature resolution near 400 K. Oxygen has no influence on these relations because of the ordered and dense crystal structure, which leading to the separation of Yb3+ and oxygen.