bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Development and Problems of China’s Carbon Market
Authors: Song Haiyun , Zhang Xiaoxuan , Zhang Gao 
Published: March 2020

Abstract
Following the pilot carbon market, China officially launched the construction of a national carbon market in December 2017. This paper mainly analyzes the construction of national carbon market and the development status of pilot carbon market, and puts forward the main problems faced by the construction of national carbon market. This paper holds that the national carbon market has some difficulties in its own construction, such as total amount setting and quota allocation, and also faces the problems of coordination between carbon market and electricity market, carbon price and electricity price.
Study on Rating Method of Nuclear Events in Marine Nuclear Power Plant
Authors: Chen Yuqing , Liu Junteng , Cai Qi , Li Ang 
Published: March 2020

Abstract
According to the operational safety characteristics of marine nuclear power plant and the nuclear safety rating needs of nuclear ships in case of abnormal events during sea navigation, the rating evaluation standards are established referring to the international nuclear event rating table, which consider three aspects of “radioactive safety impact”, “defense in depth capability impact” and “power output impact” in abnormal events. The potential common cause characteristics of the event are additionally considered. Then the rating procedure for nuclear safety events of marine nuclear power plant is proposed. The study is of great significance for accurately evaluating the severity of abnormal events and effectively guaranteeing nuclear safety of marine nuclear power plant.
Leakage Monitoring Technology of Oil Pipeline and Its Application
Authors: Xu Lu , Zhao Yu , Bai Xiaoqian 
Published: March 2020

Abstract
This paper analyses the leak detection methods of oil pipelines at home and abroad, and probes into the anti-theft monitoring methods of oil pipelines in oilfields. Aiming at the problem of oil pipeline anti-theft monitoring, the key technology of oil pipeline anti-theft monitoring system is pipeline leakage detection alarm and accurate location of leakage point. The application of oil pipeline leakage monitoring system is introduced. Introduction.
Based on Entropy Weight---Fuzzy Comprehensive Method of Evaluations on the Soil Nutrients of Added Cultivated Land--- A Case Study in Yaozhou District, Tongchuan City, Shaanxi Province
Authors: Shi Chendi , Li Juan , Lu Yangjie 
Published: March 2020

Abstract
In this paper, through the sampling analysis, the entropy weight---fuzzy comprehensive evaluation was adopted to distribute the weight of added cultivated land fertility in Yaozhou District, Tongchuan City, and the soil fertility in the region was further evaluated. At the same time, the main limiting factor impacting soil fertility of the added cultivated land was put forward. The results indicate that 1) Indicators of soil fertility weight of newly-increased farmland in Yaozhou District, Tongchuan City Land Remediation Project is 0.3227 for organic matter, 0.1611 for total nitrogen, 0.2319 for available phosphorus, and 0.2843 for available potassium.2) The soil fertility scores of these farmland in Yaozhou District, Tongchuan City under the land consolidation project are dispersed with values ranging from 17.3 to 50.0 points, with the mean of 26.2 points. 3) Soil total nitrogen (TN) and soil organic matter (SOM) are the major factors behind low soil fertility indexes. The extent of their impact on soil fertility is ranked as follows: TN>SOM. 4) TN and SOM are the most important constraints which lead to low soil fertility of new farmland. The most effective way to improve the composite index of soil fertility is that the content of TN and SOM in the soil should be increased successively. 5) The adoption of a combination of Analytic Hierarchy Process and weight comparison method has yielded good results in evaluating soil fertility, which implies broad prospect of application.
Spatial Correlation of Water Innovation Efficiency in the Yangtze River Economic Belt
Authors: Zhao Xiaoke , Li Huirong 
Published: March 2020

Abstract
Based on the input and output data of the 11 provinces and cities in the 2006-2016 Yangtze River Economic Belt, the article selects R&D personnel’s full-time equivalent nuclear R&D research expenditure as the input index, selects the number of patent grants as an indicator of acceptable output, water consumption and wastewater discharge. As a non-conforming output indicator, the EBM model considering undesired output is used to measure the water innovation efficiency of each province and city, and calculate the global Moran’I index value, and draw the Moran index map for 2006, 2009, 2012 and 2016. It is found that water use efficiency is generally on the rise, and there is significant spatial autocorrelation between regions. Shanghai, Jiangsu and Zhejiang have been at the frontier level of efficiency and have the positive correlation. Chongqing and Guizhou have negative correlations with neighboring provinces and cities. In order to more effectively improve the water innovation efficiency of the Yangtze River Economic Belt, in addition to paying attention to the development of the province and the city itself, it is also necessary to pay attention to the radiation belt actions of neighboring provinces and cities, and formulate differentiated water management measures.
Study on Operation Strategies of Cooling Tower in Ground Source Heat Pump System
Authors: Su Shunyu , Peng Mengying 
Published: March 2020

Abstract
The mingled system of ground source heat pump with cooling tower has its advantage in winter cold and summer hot region. Basing on the experiments of a ground source heat pump system assisted with cooling tower in Wuhan, the operation controlling strategies of mingled ground source heat pump system were studied in this paper. And the maximal temperature controlling method was adopted by comparing energy cost of the system and soil temperature changes in different cases. The results show that cooling tower could operate as the single cold source instead of buried tubes when the outlet water temperature in buried tube is lower than 32°C. It will help to increase the operation efficiency and decrease the energy cost of this ground source heat pump system. And it will also release heat accumulation problem of the soil surrounding buried tubes.
Using Soil Microorganism to Construct a New Index of Soil Quality Evaluation
Authors: Zhang Jing , Li Pengzhan 
Published: March 2020

Abstract
As an important resource for human survival, soil plays an important role in maintaining productivity, environmental quality, animal and plant health, etc. Unreasonable use of land resources and large-scale soil degradation has brought serious threat to human beings. At present, the evaluation of soil quality focuses on the physical and chemical properties of soil, and the study of soil microorganisms has little impact on soil quality. This paper attempts to construct a new soil quality evaluation system from the perspective of soil microorganisms, highlighting the important role of soil microorganisms, and providing new ideas for the rational construction of soil quality evaluation system.
Research on planning and design of rural characteristic landscape from the perspective of sustainable development
Authors: Liu Chen 
Published: March 2020

Abstract
Purpose To study the planning and design of rural characteristic landscape from the perspective of sustainable development. Method This paper first expounds the current situation of the planning and design of rural landscape in China, then determines the objectives and principles of the planning and design of rural landscape in China, and finally proposes the design method of the planning of rural tourism landscape in China. Result From the perspective of sustainable development, the planning and design of rural featured landscape should follow the objectives and principles of design and promote sustainable development. In the planning and design of rural tourism characteristic landscape, we should not only highlight the characteristics, but also strengthen the protection of ecological environment. Conclusion Rural landscape is an important component of rural tourism in China. The planning and design of featured landscape should be able to create featured landscape, optimize layout and facilities, and strengthen ecological protection
Automatic picking method of microseismic signal first arrival time based on empirical wavelet transform
Authors: Xie Bo , Shi Fuqiang , Ma Sheng , Li Feng 
Published: March 2020

Abstract
For problems in the process of microseismic signal acquisition, there is a large number of interference signals, which leads to that the first arrival time of signal is difficult to pick up.A picking method combines empirical wavelet transform (EWT) and signal first arrival algorithm is proposed to pick up the first arrival time of microseismic signal.Firstly,the component signals are obtained by the EWT method, which is used to decompose the microseismic signals with the characteristics of adaptive and conquering modal aliasing. Then the correlation coefficient and variance contribution rate of each component signals are calculated, and the component signals within the threshold range are selected for reconstruction to reduce the interference of noise signals. Finally, the modified energy ratio (MER) and fractal-dimension (FD) are used to pick up the first arrival time for the reconstructed denoising signal. According to the experimental verification, the accuracy of signal first arrival time picking combined with the MER and FD method based on EWT is 0.59% and 0.36% respectively. But in terms of efficiency, the former is obviously higher than the latter. The experimental and analytical results show that the model is highly accurate in picking up first arrival time of the effective signals and has a strong applicability to the signals of different data quantities.
Prediction Model for Deformation Risk Grade of the Soft Rock Tunnel Based on GRA - Extension
Authors: Ma Xinmin , Xue Yiguo , Bai Chenghao , Liu Haiting , Yu Yuehao 
Published: March 2020

Abstract
The soft rock tunnel is affected by geological factors and construction factors and it is easy to produce large deformation, which leads to cracking and spalling of the primary support, distorting the steel frame, uplifting the tunnel bottom, and cracking of the secondary lining, and has a serious impact on the safety of tunnel construction and operation. In this paper, the surrounding rock strength, rock mass integrity, groundwater condition, tunnel depth, excavation method, support strength and primary support closure time were chosen as the main factors affecting the deformation of soft rock tunnels. According to the actual monitoring and measurement data of the tunnel, the factor weights were calculated using GRA. Extension theory is used to establish the prediction model for the soft rock tunnel deformation risk. According to the comparison between actual deformation and model prediction deformation, the prediction model of tunnel deformation risk grade has high applicable performance in tunnel deformation risk assessment, which provides a reference for construction optimization of soft rock tunnel.
Research on Control Strategy of Hydraulic Control Unit Test Device Control System
Authors: Qian Feng , He Yongyi , Cheng Pengfei 
Published: March 2020

Abstract
Hydraulic control unit test (HCU) is a complicated process with nonlinear, hysteresis and large parameter change. This paper focuses on the research of PID control strategy which comes from the BP neural network and HCU test strategy, and combines Matlab/Simulink, AMESim and other software for simulation and verification, in order to design a reliable and high-quality control scheme.
Force Characteristics and Field Test of Shield Tunneling Tools
Authors: Chen Lei 
Published: March 2020

Abstract
This article takes the Wuhan Metro Line 7 project as the background, and statistically analyzes the parameters acquired by shield tunneling. The relationship between the shield parameters is obtained, and the correlation between the shield parameters and the geological conditions is analyzed; based on the obtained data by on site testing, the mechanical characteristics of the scraper and the force distribution characteristics on the cutter head are analyzed.
Research on a Loquat Picking Equipment
Authors: Zhao Yaping , Chen Zailiang 
Published: March 2020

Abstract
Dongting loquats are often cultivated on the slopes of Wushan. The height of the loquat trees is more than ten meters, which brings great inconvenience to the harvesting work. The fresh fruit period is short, and it is not durable for storage and transportation. The high market price, the rapid price changes, and slow manual picking have seriously affected farmers’ income. This paper elaborates the recent status of fruit and vegetable harvesting at home and abroad. A simple picking device that does not damage the fruit is designed aiming at the pure artificial harvesting of loquat at present. Based on the analysis of the working principle, the prototype is made and tested. The experiment results show that the loquat harvester is easy to operate, simple in structure and low in price, and can be harvested at different heights and sizes, which greatly relieves the labor intensity of workers.
Study on the Method of Conversion from Beidou Coordinate System to Local Coordinate System
Authors: Yan Xiaowei , Yang Fan , Tan Yue , Wang Xitong , Li Yulong 
Published: March 2020

Abstract
The coordinate system involved in surveying and mapping is rather complicated. The combination transformation of coordinate systems can solve many problems in real life and work. At the same time, the transformation between coordinate systems is also a difficult problem to be solved urgently. Aiming at the parameters and characteristics of Beidou coordinate system and the projection parameters of local city coordinate system, a set of transformation methods suitable for Beidou coordinate and local city coordinate system are developed by combining parameter transformation algorithm, the feasibility of the algorithm is verified by transforming the known control points.
Navigation risk and route optimization in the northern waters of Zhoushan
Authors: Yin Mingyu , Chen Yijin , Zhong Lufeng , Huang Jinjie , Wang Jiahong 
Published: March 2020

Abstract
with the implementation of the national strategy of marine development and economic integration of the Yangtze River Delta, Zhoushan will become an “international logistics island” and “free trade island”, and the port and shipping logistics industry will become the leader of Zhoushan’s economic development [1]. However, with the further development of port and shipping logistics industry, many islands will face the development, construction and utilization in the future, and the navigation situation of Zhoushan Island will face new challenges. In order to meet the needs of the development of Zhoushan port logistics and the improvement of navigable condition of Zhoushan Island waterway, this paper analyzes the risk factors affecting the navigable safety of the northern waters of Zhoushan, and based on the comprehensive consideration of the influence of the representative ship size, ship field conditions, wind and current as well as water depth on ship operation, reasonably and scientifically optimizes the navigable conditions of the northern waters of Zhoushan Island. Layout design.
On Sustainable Development Strategy of Rural Tourism in Jiangxi Province
Authors: He Jianbo , Wang Zhen 
Published: March 2020

Abstract
In recent years, the development of rural tourism is gradually accelerated, and its status in tourism industry is getting higher and higher. This paper uses some scientific research methods such as literature analysis, survey research, etc. to perfect the concept and characteristics of the rural tourism. Taking present situation of rural tourism development in Jiangxi Province as an example and combining with the theory of rural tourism development, the paper analyzes its problems in management, marketing, etc. and puts forward some corresponding countermeasures and suggestions consequently in order to promote the comprehensive development of rural tourism in Jiangxi Province efficiently and effectively.
Cause analysis of water and mud inrush in fault fracture zone of deep tunnel and its treatment measures
Authors: Guo Yanhui , Lu Jincai , He Jin , Ma Mengxiang , Rao Biyu 
Published: March 2020

Abstract
A water conveyance tunnel of a hydropower station encountered the disaster of water inrush and mud inrush in the fault fracture zone, which caused the filling collapse in the fault fracture zone on the face of the tunnel, which seriously threatened the safety construction of the workers and affected the construction period. Based on the comprehensive analysis of the influencing factors of water and mud inrush in the fault fracture zone of the tunnel, this paper makes a preliminary analysis of the water and mud inrush in the tunnel, and puts forward the comprehensive treatment measures for the construction of the collapse section. Through the field engineering practice, this disposal measures passed the collapse section smoothly. The research results can be used for reference to the cause analysis of water and mud inrush in the fault fracture zone of similar tunnels and the construction method in the collapse section.
Effect of Solid-to-Liquid Ratio on Thin Fly Ash Geopolymer
Authors: Yong-Sing Ng , Yun-Ming Liew , Bakri Abdullah Mohd Mustafa Al , Hui-Teng Ng , Hussin Kamarudin , Yong Heah Cheng , Mohd Mortar Nurul Aida , Sandu Andrei Victor 
Published: March 2020

Abstract
The present work studies the effect of solid-to-liquid (S/L) ratio on the properties of thin fly ash-based geopolymer. The fly ash geopolymers with dimension of 160 mm × 40 mm × 10 mm were synthesised by using various S/L ratios (1.5, 2.0, 2.5, 3.0 and 3.2). The alkali activator was prepared by mixing 10M sodium hydroxide (NaOH) solution and sodium silicate (Na2SiO3) with the Na2SiO3/NaOH ratio of 2.5. The samples were cured at 60°C for 6 hours. The performance of fly ash geopolymers was evaluated by testing the flexural strength after 28 days. Results showed that the S/L ratio had an effect on flexural strength. The optimum flexural strength of 5.12 MPa was achieved by the fly ash geopolymer with S/L ratio of 2.5. However, the flexural strength dropped with higher S/L ratio as the workability decreases. However, further experimental lab work should be carried out as there is less knowledge in the study on the flexural strength of thin fly ash geopolymer.
A Novel Green Technology Kaffir Lime Extract as Lizard Repellent
Authors: Nawi M. A. M. , Ishak Muhammad Ikman , Rosli M. U. , Ayub M. A. R. M. , Khor C. Y. , Ahmad Termizi Siti Nor Azreen , Ishak Noorhidayah 
Published: March 2020

Abstract
The ubiquity of lizard in homes and has caused huge problem to human. They are one of the very important agents to transmit Salmonella that cause food poisoning towards human being. Through this research the potential of Kaffir lime peel toward lizard was reported. The process to produce Kaffir lime extract is hydrodistillation extraction method. The repellency test of essential oil will be assess at different concentration (0%, 25%, 50%, 75% and 100%). The duration of observation will be test from 3 to 6 hour duration. The results has shown that the concentration up to 50% and above of essential oil from Kaffir lime peel extraction may reflect the lizards in a state of discomfort.
A Review of Morphology Analysis on Dolomite as an Additive Material in Geopolymer
Authors: Sauffi Ahmad Syauqi , Wan Ibrahim Wan Mastura , Ahmad Romisuhani , Mohd Mortar Nurul Aida , Zaidi Fakhryna Ahmad , Ahmad Zailani Warid Wazien 
Published: March 2020

Abstract
Dolomite is a carbonate mineral in nature. Dolomite (CaMg(CO3)2) is an anhydrous carbonate mineral composed of calcium, magnesium, and carbonate. The word dolomite is also used to describe the sedimentary carbonate rock, which is composed predominantly of the mineral dolomite (also known as dolostone). Dolomite had been one of the frequent used materials in most of researches due to its accessibility to acquire and the properties. The composition of Ca and Mg became one of the main attractions for the usage of this natural mineral. One of the main properties needed to be studied when using any materials is morphology of the martial. Morphology analysis can give much valuable information about the surface topography and composition of the sample. Other than that, detailed three-dimensional and topographical imaging can also be obtained. This can helps the researches to finds the core value or the novelty in their study. Thus, reviews for the morphology analysis of dolomite were done to investigate how the structures of dolomite develop for certain study and usage. Besides that, dolomite as an addition into certain materials were reviewed and compared to observe the interactions and changes happened.
Optimization of Pretreatment and Enzymatic Hydrolysis of Spent Coffee Ground for the Production of Fermentable Sugar
Authors: Jin Lai Shan , Salimi Midhat Nabil , Kamal Syazni Zainul 
Published: March 2020

Abstract
The aim of this work was to optimize the condition of pretreatment and enzymatic hydrolysis for high yield of sugar production of spent coffee ground (SCG). Acid and alkaline pretreatment method were compared and the method with more sugar produced was selected. Response surface methodology was use for the analysis of conditions such as concentration of alkali, temperature and weight of SCG. The optimized condition obtained was 0.5% (v/v) of alkali, temperature of 100°C and 5% (w/v) of SCG. Enzymatic hydrolysis was carried out after the optimized condition of alkaline pretreatment. The conditions were pH, temperature and enzyme dosage. The optimized condition obtained was at pH 4.8, 0.01 ml of enzyme and temperature of 55°C.
Design of Automatic Switch System of Solar Panel and Power Plant for Residential Load using Artificial Neural Network
Authors: Rahmawati D , Aprillia B S , Priharti W , Silalahi D K , Kumillayla K 
Published: March 2020

Abstract
Electricity needs in Indonesia are getting bigger, following the increasing population. Today, most of Indonesia’s electricity needs providing by PLN. However, most PLN electricity sources are non-renewable energy sources. Indonesia is a tropical country that receives sunlight almost all year long, so it is possible to use solar as an alternative energy. We designed an automatic switch system that could switch the electrical energy source from solar panel to the power plant from PLN if the power from the solar panel were insufficient. The automatic switch controller in this system uses backpropagation neural networks. The artificial neural network (ANN) model in this study consisted of two inputs, two hidden layers, and one output. The residential loads used are lamps, rice cooker, and fan. From the research results, the optimum epoch value is 2000, with an automatic switching accuracy value reaching 98.6%.