bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fault Diagnosis and Detection Based on Efficiency Loss Test of Photovoltaic Power Station
Authors: Xie Xiangying , Meng Fanteng , Luo Xin , Cai Shixia , Ma Xiaoguang , Na Zhixiong , Ma Dayan , Shan Yu , Ge Leyi , Liu Yunchao 
Published: July 2020

Abstract
The existing operation and maintenance system of photovoltaic power station can analyze partial equipment problems, but due to the data storage, processing and transmission capacity can hardly meet the requirements of a large number of operation data acquisitions and processing of photovoltaic power station, the operation status of photovoltaic power station cannot be comprehensively evaluated. This paper proposes to analyze the overall efficiency and key link efficiency of the photovoltaic system through long-term monitoring, extract the efficiency model parameters of the key components and important links of the photovoltaic power station, and establish the performance evaluation implementation process. At the same time, based on different actual detection conditions, photovoltaic fault diagnosis is carried out by time domain reflectometry, prediction theory comparison and sensor optimization.
Study on Synthesis Method of Biodiesel from Epoxy Gutter Oil
Authors: Xu Lidong , Gu Guizhou , Li Zheng 
Published: July 2020

Abstract
Using waste oil biodiesel as raw material, using formic acid as oxygen carrier, using trace concentrated sulfuric acid as catalyst, epoxy waste oil biodiesel was prepared without solvent. The effects of the dosage of formic acid, hydrogen peroxide, reaction time and reaction temperature on the epoxidation of biodiesel were investigated. The results showed that the epoxy value of biodiesel was 5.56% and the conversion rate was 80.03% after 3.5h reaction at 500 r/min speed and 50 °C reaction temperature according to the mass ratio of biodiesel, 30% hydrogen peroxide, 88% formic acid and concentrated sulfuric acid of 15:13.5:2. 9:0.075.
The impact of urban development upon the quality of drinking water sources: Evidence from China
Authors: Yang Jing , Chen Tong-Sheng , Sun Qiang , Huang Bao-Yuan , Ren SI-Jing 
Published: July 2020

Abstract
The extent of urban development and human activities may affect the water quality of drinking water sources in different ways. In this study, drinking water sources in different districts and counties of Qingyuan City, China were determined as the study areas, and the correlation between urban development and water quality index was analyzed by Spearman rank correlation analysis and regression analysis. The results showed that: 1) A statistically significant correlation was found between the extent of urban development and part of the water quality index. Specifically, the correlation between the gross annual value of industrial and agricultural production, household registration index and water quality index was the strongest. The fecal coliform index was most affected by the extent of urban development; 2) A function describing the relation between the urban development index and the water quality index was obtained by multiple regression analysis; 3) A certain significant correlation was found among the water quality indexes of drinking water sources in Qingyuan. Most of the water quality parameters were strongly correlated, which could provide a scientific basis for parameter selection in the future water source automatic monitoring.
Fault Analysis of Abnormal Opening of the Main Landing Gear Door of Civil Aircraft
Authors: Liu Wenwen 
Published: July 2020

Abstract
The main landing gear door is an important component of the landing gear system. The system is in a state of failure and will not play the role of extending and retracting when the door extension/retraction fault. This article analyzes the main landing gear door extension/retraction principle and fault cause of civil aircraft, deeply studies the control process and logic of the Uplock, and improves the understanding of the landing gear door extension/retraction system.
Structure selection and structure analysis of China publishing creative center
Authors: Zhang Xiaomeng , Liu Wenting , Wang Ying , Liu Xiang 
Published: July 2020

Abstract
The China publishing creative center covers 100,000 square meters, which is composed of two towers and one podium. The building is divided into three parts through structural joints. The structural system of the two towers is the frame-core tube, while the podium is the frame structure. Through the selection of different structural systems, the selection and construction of structural systems are analyzed. Through structural calculation and optimization, the consumption of concrete and steel bars should be reduced as much as possible to reduce the impact on the environment.
Impact of rapid urbanization on temporal and spatial pattern change of heavy rainfall in China during the past 60 years
Authors: Feng Kong 
Published: July 2020

AbstractThrough the study of the daily heavy rainfall observation records of 659 meteorological stations in China from 1951 to 2010, we find that rapid urbanization may trigger the significant increase of large-scale heavy rainfall in China. The main conclusions are as follows: Decadal heavy rainfall amounts (HRA), heavy rainfall days (HRD) and heavy rainfall intensity (HRI) in China have increased significantly, with an increase of 68.71%, 60.15% and 11.52% respectively, and the increase of station number is 84.22%, 84.22% and 54.48% respectively, showing a time change process of “rapid slow re rapid increase” and a spatial change from Southeast Coast to Central, Southwest, North and Northeast China. The rapid urbanization factors, including the output value of the second industry (GDP2), the proportion of urban population (UP) and the annual average haze days (HD), are likely to be the main reasons for the increase of heavy rainfall in China. Their variance explanations for the HRA, HRD and HRI in China are 61.54%, 58.48% and 65.54% respectively, of which the variance explanations for the heavy rainfall rainfall, rainy day and rain intensity are respectively high only by haze 25.93%, 22.98% and 26.64% respectively, while the variance interpretation of climate factors, including WPSH, ENSO, AMO and AAO, is only 24.30%, 26.23% and 21.92% respectively. Compared with the forcing factors of rapid urbanization, the impact of these climate factors is only 1/3 of the former. The panel data of the annual mean of the total population and visibility days at the county level in China are significantly related to the HRA, HRD and HRI in China. The spatial correlation coefficient gradually increased from 1950s to 2000s, that is, the total population at the county level increased from 0.35, 0.36 and 0.40 to 0.54, 0.55 and 0.58 respectively, and the annual mean of visibility days increased from 0.36, 0.38 and 0.48 to 0.55, 0.57 and 0.58. It is further indicated that the rapid urbanization triggered the significant increase of heavy rainfall in China.
Evaluate of vegetation value for reconstruction and extension project of expressway
Authors: Hu Chao , Li Chen , Zhao Ran , Li Yunpeng 
Published: July 2020

Abstract
A large number of artificial or natural vegetation grow on the both sides of expressway, which play an important role in automobile gas purification and environmental protection. With the development of transportation, more and more reconstruction and extension projects spread up all over the country. However, those valuable biological resources are usually handled by rough means, which cause a waste of resources and damage of environment. Based on this, this paper intends to carry out roadside vegetation protection research in combination with the actual reconstruction and extension project of expressway. Evaluations of the roadside vegetation value are discussed and proposed. Results could provide reference for the roadside vegetation protection for reconstruction and extension project of expressway.
Research on the Architectural Design Strategies Based on the 2019 Evaluation Standard for Green Building of China
Authors: Fang Yuan , Liu Yu , Wang Zida , Paerhati Yilizhati , Liu Zhixia 
Published: July 2020

Abstract
On August 1, 2019, China’s 2019 version of the Evaluation Standard for Green Building GB/T50378 (ESGB2019) was implemented formally. How to develop design strategies base on this standard in order to guide or control green building design is explored in this paper. Firstly, 62 indexes in ESGB2019 which are directly related to architectural design realm are extracted; then the extracted indexes are classified into six categories according to different aspects of building design;finally, possible ways to extract or establish design strategies relating to the two types of extracted indexes are discussed. The result are expected to provide assistants for architects in designing green buildings that would meet the requirements of ESGB2019.
Research on Construction of Standard System for Development of Green Economy in Hainan Province
Authors: Hou Shan , Xu Bingsheng , Lin Ling , Zhang Lijia , Zhao Xuezhi , Liu Jing , Pan Ke 
Published: July 2020

Abstract
The research on green system in Hainan Province aims to analyze the development trends, standardization status and problems in related fields at home and abroad by investigating the policy mechanism and pilot operation of ecological civilization construction and sustainable development and the standardization in green development fields in China and abroad. This paper further integrates the local practice of green development standardization with the international development trends, puts forward the strategic positioning and layout of standardization in support of ecological civilization construction and green development in Hainan. This paper studies and builds a green standard system that is compatible with the national ecological civilization pilot zone by focusing on key industries in Hainan, clarifies the connotation, boundary and main contents of the standard system for development of green economy in Hainan by study, and also prepares green standard system tables for Hainan, proposes a list of standards adopted and a list of missing standards to form a catalogue of key standards, thus accelerating the establishment and improvement of the standard system for development of green economy in Hainan.
Analysis and Research on Energy Saving and Emission Reduction of Ships
Authors: Dong Xiaoliang 
Published: July 2020

Abstract
At present, China’s marine industry is in a period of vigorous development, which means more and more ships are produced on the market. Ships are the main driving force for the development of the marine industry, but they also cause many problems, especially the marine ecological problem, marine pollution has become an important factor restricting the development of the marine cause. It is urgent to protect the marine ecology. In other words, to actively develop energy-saving and emission reduction technologies for marine diesel engines is in line with the long-term development needs of marine undertakings. For diesel engines that play a key role in ship driving, effective energy saving and emission reduction technologies are proposed from the aspects of improving the fuel combustion process, using alternative fuels, emission control and exhaust gas treatment, and comprehensive energy utilization, in order to truly realize the expected Provide reference for energy saving and emission reduction targets.
Economic analysis of expressway building envelope in cold area based on RSM
Authors: Huang Cuicui , Wen Zhimei 
Published: July 2020

Abstract
The DeST-c energy consumption simulation software was used to build the building model based on the toll station and service area building in expressway of Zhangjiakou in the cold area, simulates and calculates the impact of single factor on energy consumption, and carries out economic analysis based on life cycle theory to determine the level of influencing factors. Finally, the BBD test design method and the orthogonal test design method were used to design the test scheme respectively and the economic analysis of the comprehensive thermal performance of the envelope structure, and the optimal energy saving scheme of the comprehensive thermal performance of the building envelope in the cold area was obtained.
Research on Investment Efficiency Evaluation of Wind Power Projects under Supply-side Reform
Authors: Wang Li , Liang Junxia , Liu Jinpeng 
Published: July 2020

Abstract
In recent years, China’s wind power has developed rapidly, with increasing installed capacity, and it is gradually entering a stage of large-scale development, which has broad potential for future development. However, China’s wind power investment projects have low investment efficiency, which is not conducive to the healthy development of the wind power industry. Therefore, improving the overall investment efficiency of wind power projects is an inevitable direction for the development of wind power companies in the future. This paper first takes wind power projects as research objects, combines the characteristics of wind power projects, and constructs a suitable comprehensive investment efficiency evaluation model based on DEA theory. Then it conducts an empirical analysis based on the development status of power enterprises in Xinjiang of China, and combines the evaluation conclusions to promote wind suggestions on the development of investment efficiency in power generation projects.
Diagnosis and assessment of black and odourous water and a comprehensive strategy for urban areas
Authors: Yu Huiqing , Shi Guijun , Yin Jing , Shan Yongti 
Published: July 2020

Abstract
To fundamentally solve the problems associated with black and odourous water pollution in Chinese urban areas, the Xixiang River and the Xianshui Surge were selected to diagnose and assess the pollution characteristics of black and odourous water. Based on the results, a comprehensive strategy with a scientific basis was proposed for the improvement of Chinese urban water quality.
The Approaches from Rural Construction Land Consolidation to Sustainable Rural Land Resource Development
Authors: Zhang Yiye , Zhang Zaisheng , Sun Xuesong 
Published: July 2020

Abstract
As an important property, rural construction land is related to the fundamental interests of farmers. Since rural construction land has not been efficiently used which affected the sustainable development of rural land resources, this study constructs a theoretical model of farmers’ rural construction land consolidation intention, and designs a questionnaire based on the model. Based on the data analysis, this study provides empirical test and puts forward suggestions for improving present rural construction land management policy system.
The management practice and its experience for the collection and treatment of waste home appliances in Taiwan, China
Authors: Xiang Ning 
Published: July 2020

Abstract
The collection and treatment of waste home appliances (WHAs) is a challenging issue in both academia and practice today. In the 1980s, a WHAs collection and treatment industry dominated by spontaneous market emerged in Taiwan, China, which was featured by small-scale, scattered and unregulated treatment activities, causing serious environmental pollution and health damage. Taiwan authorities have vigorously strengthened the industrial supervision and guidance, and basically curbed such simple treatment activities by the beginning of the 21st century. Focusing on the “Resource Recycling Fund” system implemented by Taiwan, this paper systematically introduces the management measures and implementation effect in WHAs collection and treatment industry in Taiwan, with a view to providing a reference for improving the WHAs management in Mainland China. It is argued that the success of WHAs management in Taiwan attributes to the following three important factors: (1) with the awakening of public consciousness on environmental protection and the gradual improvement of the rule of law, a solid environmental supervision system has been formed; (2) due to the improvement in the economic development in Taiwan and the rising labour costs, the labour-intensive simple treatment operations become unprofitable; (3) a long-standing pricing mechanism for WHAs collection and treatment has been established through the implementation of “Resource Recycling Fund” system.
Investigation into the positive effects of wind deflectors on natural draft wet cooling towers under crosswinds
Authors: Chen Youliang , Cheng Shi , Zi Pingyang , Liu Zhongyuan , Fan Rong 
Published: July 2020

Abstract
In order to reduce the adverse effects of crosswinds on the intake air of natural draft counter-flow wet cooling towers, a new method of optimizing the air intake was introduced, that is installing wind deflectors in the circumferential direction of the air inlet, and for quantitative analysis of the uniformity of the circumferential air intake of the cooling tower, the air inlet uniformity factor was defined. Based on the thermal model experiment, the effect of installing the wind deflector on the inlet air and thermal performance of the wet cooling tower is studied under crosswind conditions. Through the comparative analysis of the air intake performance and cooling efficiency, two fundamental reasons for the influence of cross wind on the cooling performance are revealed: crosswinds not only reduce the amount of ventilation, but also destroy the uniformity of the circumferential air intake of the cooling tower. After installing the wind deflector to optimize the circumferential air intake, the ventilation volume is increased, the air intake uniformity coefficient is also greatly improved, the heat and mass transfer uniformity in the tower is enhanced, and the cooling efficiency is greatly improved.
Research Status and Prospects of Key Technologies for Underground Water-sealed Oil Storage Cave
Authors: Dou Ming-Yuan , Zou Shuai , Li Hao-Ming , Feng Qing , Huang Fu-Chuan , Liao Xiao-Hua 
Published: July 2020

Abstract
Petroleum is the lifeblood of the national economy. The underground water-sealed oil storage cave has become the main development direction and research object of petroleum reserve at home and abroad due to its advantages. This paper summarizes the research progress of key technologies for large-scale underground water-sealed oil storage cave, emphasizes the current role of underground water-sealed oil storage cave in petroleum reserve, and discusses water curtain system and water sealing, surrounding rock permeability and evaluation, surrounding rock stability and evaluation, field construction technology and related issues, and also emphasizes the importance of strategic petroleum reserve(SPR), and has prospects to the future development of underground water-sealed oil storage cave.
Evaluation Of Soil Ecological Benefits Of Japonica Rice In Southern Liaoning Based On AHP And Energy Analysis
Authors: Jin Zhongyu , Sun Yizhe , Yang Ping 
Published: July 2020

Abstract
In this paper, the ecological benefit evaluation of Panjin japonica rice in south Liaoning was carried out. Based on the Analytic Hierarchy Process (AHP) and energy value analysis, the ecological benefits of japonica rice soil were evaluated from the aspects of organic matter, alkali-hydrolyzed nitrogen, rapidly available potassium and rapidly available phosphorus. The results show that the comprehensive evaluation index of soil is stable when the integrated technology is used to achieve the purpose of increasing yield and efficiency. It indicates that the ecological benefit evaluation method proposed in this paper is an effective and scientific method, which can be used for soil ecological benefit evaluation and has a profound significance for land ecological research.
Combined process of biofilm+roots for aquaculture wastewater remediation
Authors: Chen Tongsheng , Yang Jing , Huang Baoyuan , Liu Weimin , Lu Cuiyun 
Published: July 2020

Abstract
The mechanism of aquaculture wastewater remediation by combined process of biofilm+roots was studied based on the aquaculture circulatory system. Results showed that under the remediation system, the removal of COD,TP,NH4-N,TN were 84.59%,57.81%,82.43%and70.96%, respectively. The controllable wastewater treatment which is the coupling of biofilm and roots, was effective and could provide basis and technical support for the implementation of aquaculture wastewater treatment.
Three-dimensional Stability Analysis of Considering Seepage Effect on Complex Loose Slope
Authors: Wang Sha , Xie Xuyang , Mei Guodong , Lu Xinqi , Li Kun , Wang Yali 
Published: July 2020

Abstract
in order to analyze the influence of seepage on the stability of loose accumulation slope, this paper establishes a three-dimensional slope stress calculation model based on practical engineering cases, carries out the seepage stress coupling analysis, designs three analysis conditions, and studies the influence of seepage and tailings pressure on the stability of slope. The results show that the tailings pressure will strengthen the safety factor of slope stability, but the seepage will reduce the safety factor of slope stability. The influence degree of seepage on slope stability is revealed, which provides a reference for the design of loose slope.
Analysis on Influence of Tailing Pond Construction on Stability of Surrounding Loose Waste Dump
Authors: Wang Sha , Mei Guodong , Xie Xuyang , Cui Yiyuan 
Published: July 2020

Abstract
Tailing pond is one of the important facilities of mine production, which is used to stack the tailing waste discharged by the concentration plant. China’s mines produce more than 300 million tons of tailing every year, and the amount of tailing discharged is huge. Due to the limitation of land resources, tailing pond location will face more and more challenges. In this paper, the scheme of building tailing pond on the loose deposits is studied, and the influence of the load produced by the new tailing pond on the stability of the loose yards is analyzed. According to the analysis conclusion, tailing pond is built on the loose yards, and the accumulation of tailing is beneficial to the stability of the slope of the loose yards. However, if strict anti-seepage measures are not taken, the infiltration of pond water into the slope will reduce the stability of the slope, but in general, it is still greater than the safety factor of its own stability.
The storm activities in the West Pacific from 1980 to 2018
Authors: Chen Siwen 
Published: July 2020

Abstract
The storm is an important weather system that significantly affects socioeconomics and human living. This study uses the global tropical cyclone best track data from IBTrACS, along with other meteorological states from ECMWF ERA-5 reanalysis from 1980 to 2018. In the West Pacific, storms are more likely to occur in summer (July, August and September). During the 39-year period, the occurrence of storm activities tends to be less frequent in summer, accompanied by increased sea surface temperature, total precipitation and total column water. It is also found that the storm number exhibited a high correlation with sea surface temperature, surface pressure, total precipitation and total column water in the middle West Pacific as well as the sea of Okhotsk in summer.