bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on New Seagrass Bed at the Coastal Area of Yellow River Estuary in Dong Ying
Authors: Zhou Ruijia , Zhao Sheng , Xu Donghui , Song Shuai , Jian Xiaoyang 
Published: July 2020

Abstract
Seagrass resource is an important part of the Marine ecosystem, eelgrass resources worldwide recession received extensive attention of the world. Through the tracking of Yellow River Estuary in Dong Ying, we found a piece of seaweed bed, new types of seaweed for short eelgrass (Zostera japonica Asch. et Graebn), which are mainly distributed in the intertidal zone. During the investigation, seaweed cover increases by 0.54 km2 to 0.54 km2. In the year to August 2015, the biomass is 322.13 g/m2, stem branch density of 794 plants/m2. The rise and fall of seaweed bed is closely related to the water environment changes. Through the study of multiple environmental factors influence on short eelgrass life state, we found that salinity has enormous influence on the growth of eelgrass. In the five salinity conditions which the temperature is 20 °C, the net oxygen production and the activity of ribulose-1, 5-diphosphate carboxylase were the highest when the salinity was 19.459, and the photosynthesis intensity decreased when the salinity was higher or lower than this value. According to the survey, from 2002 to 2014, the inflow of the Yellow River Estuary increased from less than 5 billion cubic meters to nearly 30 billion cubic meters. Therefore, the increase of the sea water amount of the Yellow River and the decrease of the salinity in the estuarine waters are the important reasons for the growth of the seagrass bed.
Threshold Effect and Regional Differences of Environmental Regulation on Carbon Emission
Authors: Yuan Qingmin , Yan Zhe 
Published: July 2020

Abstract
The increasingly serious environmental and climate problems have attracted the attention of many countries in the world. As a country with a large amount of carbon emissions, with the economic growth, the pressure of carbon emission reduction is increasing. Starting from the basic issue of the impact of environmental regulation on carbon emissions, this paper takes energy intensity, industrial structure and FDI as threshold variables, environmental regulation as the core explanatory variables, and uses the panel threshold model to analyze the threshold effect of environmental regulation on carbon emissions in China and the regional differences in the East, middle and West.
Application of Energy-saving and Emission-reducing Technology in Street Lights in Citizens’ Exercise Areas
Authors: Yu Tianbo , Ji Lei , Liu Wei 
Published: July 2020

Abstract
At this stage, research and development and use of energy-saving and environmental protection technologies are increasingly widespread. Especially in recent years, China has put forward a sustainable development strategy. The author has carried out a retrofit study on the urban street lighting system and transformed the urban lighting system. This paper proposes to build a professional and energy-efficient urban street lighting that meets the standards of energy conservation and environmental protection System, and specifically proposed a new type of lighting system, which can effectively reduce the energy consumption of power supply, effectively provide power supply when suppressing reactive power, and rebuild the circuit, in the street light After the system was applied to the residents’ sports area, we found that it has the advantages of low running cost, easy expansion and convenient maintenance.
Thermal modeling and measurement of a drive motor in a pure electric vehicle
Authors: Zhu Linpei , Chen Hu , Xiong Fei , Liu Xiong , Kong Ninghua 
Published: July 2020

Abstract
This research is concerned on the thermal modeling and measurement of an electric drive motor. The motor is a high-efficiency permanent magnet synchronous motor (PMSM) and is actively cooled by circulating coolant through a water jacket. A lumped-parameter thermal network (LPTN) based on the Amesim is established for thermal modeling, and the temperature histories of rotor and copper winding are obtained in a condition of 120kph@3% grade. Slip ring is employed to handle the problem of effectively testing the temperature of motor rotor. The LPTN thermal model is validated by comparing simulation results with the test ones. Based on this equivalent thermal model, temperature distribution along axial direction of the motor can be obtained. The proposed LPTN model is useful for motor design to avoid over heat and demagnetization.
Study of Short-term Load Forecasting Based on PSO-SVR
Authors: Gu Jing , Zhao Dazhou , Ruan Jiongming 
Published: July 2020

Abstract
Support vector machine (SVM) algorithm was used to predict the energy load of an energy station in Shanghai, including hourly and half-day load two parts. The input parameters were the outdoor temperature, the air relative humidity, the temperature difference between the supply and return water and the flow of the supply water at the moment, adding the load at the last moment. The output parameter was the load at the moment. The results showed that the predicted value was in good agreement with the measured value. The average absolute errors of all results were less than 1.5, and the average relative errors were less than 3.
Research Progress of Lithium-Ion Battery Current Collectors
Authors: Li Yaopeng 
Published: July 2020

Abstract
The current collector is one of the important components of a lithium-ion battery. It can not only carry the electrode active material, but also collect the current generated by the electrode active material to form a larger current output, which improves the charge / discharge efficiency of the lithium-ion battery. This article reviews the current research progress of single or composite current collector materials such as copper, aluminum, nickel, stainless steel, carbon, and carbon-coated aluminum foil in lithium-ion batteries.
Quantitative analysis of coal resources in Qingyang City
Authors: Gai Ke , Hao Zhifu , Qi Huili , Sun Ning , Zhenghua Li 
Published: July 2020

Abstract
Qingyang City is rich in coal resources, bringing great economic benefits, but also accompanied by soot-type air pollution. This paper takes hetaoyu mine and tianshuibao coal mine as the research object, and systematically analyzes the coal resources. Master the characteristics of coal quality, coal rock and coal resources. Taking the sustainable development of the green coal economy as the direction, from the source to change the current coal development process caused by the waste of resources, the deterioration of the ecological environment and environmental pollution.
Analysis of short circuit electromagnetic force of salient pole synchronous motor winding
Authors: Shen Yubo , Zhang Dewen , Xu Minhu , Kong Fanrong , Zhang Peng , Chen Shiyu , Shang Shulei , Zhao Xiangyu 
Published: July 2020

Abstract
China’s pumped storage power station has a broad prospect, in which salient pole synchronous motor plays an important role. In this paper, the mathematical expression of electromagnetic force in the case of short circuit of the excitation winding of salient pole synchronous motor is derived, and the variation law of electromagnetic force density in the case of fault corresponding to the electromagnetic force of damping winding is calculated. The mathematical law of electromagnetic force in the case of short circuit fault of salient pole synchronous motor is revealed, which has practical reference significance.
Research on early warning method of coil temperature of emergency diesel generator set in nuclear power station
Authors: Liu Jihua , Dai Fangzheng , Zhu Lei , Chang Xincai 
Published: July 2020

Abstract
As the last back-up supply of the nuclear power supply system, it is of great significance to ensure the safety and reliability of the nuclear emergency diesel power unit. For the emergency diesel generator set of nuclear power plant, the various signal types of diesel generator set are quasi periodic non-stationary signals, which make the diesel generator set have the characteristics of complex fault mechanism, difficult to collect and process all kinds of signals in a unified way, and difficult to extract fault features. The main purpose of this paper is to provide an early warning method and system for the coil temperature of diesel generator set in nuclear power station. By building a synchronous collection system for the coil temperature of diesel generator set, the collected coil temperature is counted in real time, and the abnormal analysis is carried out according to the real-time predicted value, and the early warning is carried out in time in case of any abnormality, so as to ensure the normal operation of diesel generator set.
Research on the Planning Strategy and Layout Pattern of Electricity Grids in Megacities from the Perspective of Urban Planning
Authors: Cheng Jinmin , Zhao Jing , Peng Wei 
Published: July 2020

Abstract
In light of the advancement of urbanization and the development of digital and intelligent technologies, urban power consumption has shown a continuous and rapidly increasing trend, which makes power supply and its protection key issues in terms of further urban development. Given this context, the electric power system per se has likewise been undergoing continuous improvement and change, with many efforts directed toward AC-to-DC conversion for electricity transmission. As such, the new measures applied in urban areas inevitably face the challenge with regard to coexisting with the existing urban systems. On the one hand, electricity grids, as important infrastructure of urban power supply systems, play a key role in supporting modern urban life. On the other hand, the traditional planning methods, solely relying on electricity load forecasting and load nodes, results in a certain degree of inconsistency and conflict between the electricity grid planning and the Master Urban Plan, thereby leading to serious negative impacts of the electricity grid layout on urban space quality. Given this context, this article reflected on the limitations of the traditional electricity grid layout and planning methods by analyzing the current situation and the needs of urban space development. Subsequently, relevant planning theories were combined to explore strategies and models for the planning and layout of electricity grids and related facilities in megacities based on comprehensive consideration of power security, power safety, not-in-my-backyard mentality, urban development needs, and urban space quality, in order to achieve harmonious coexistence of electricity grid construction with urban-rural space.
Research on Improved Droop Control of AC-DC Microgrid Bidirectional Converter Based on Power
Authors: Cai Wenchao , Gao Min , Jia Junqing , Lv Chao , Guo Shan , Li He , Yang Yang 
Published: July 2020

Abstract
The bidirectional converter in AC / DC hybrid microgrid is an important link to balance the power on both sides of AC and DC, Its control method is extremely important. This paper proposes an improved droop control strategy for bidirectional converter using DC-side power amount control. This control can autonomously and smoothly switch in rectifyer, inverter and idle modes. Utilizing DC-side power control avoids normalized calculations. Strategy meets two modes of island and grid connection, eliminating the need for multiple control strategy switches. Simulation results show that the DC bus voltage and AC frequency are near the rated value, which guarantees the stable operation of the AC-DC hybrid microgrid.
Study on the Unified Data of Power Regulation System for Guizhou Power Grid
Authors: Xiao Qianhong , Du Jiang , Zhang Yao , Chen Jinlong , Chen Zhuo 
Published: July 2020

Abstract
The grid structure of the Guizhou Power Grid is becoming more and more complex, and the deepening of regulatory integration has made the information and work of regulators more and more onerous. Combining artificial intelligence, big data technology and grid control business is an inevitable trend of development. In this paper, a unified data model of the power system is established based on the Guizhou power grid’s regulatory operation requirements. It can analyze the impact of big data on dispatching business and define the power business demand model in the big data environment. This model also integrates and manages the multi-source heterogeneous data of power grid business by reflecting data and relationships of power regulation business. The research results are of great significance to improve the level of safe and stable operation of the power grid, and to promote intelligent operation of regulation and control, and also lay a solid foundation for intelligent dispatch.
Research on Key Technologies of New Energy Microgrid Based on Artificial Neural Network
Authors: Zhang Hongxin 
Published: July 2020

Abstract
The new energy microgrid is a new and complex power generation and distribution system. Due to the instability of the new energy wind power generation that constitutes the microgrid, it affects the stable operation of the microgrid. The use of artificial intelligence methods to predict load and wind power generation can improve forecast accuracy, which is beneficial to the energy management and operation optimization of the microgrid. The stable operation of the microgrid is of great significance. This paper takes the new energy microgrid as the research object, and uses artificial intelligence neural network as the technology drive. The short-term load forecasting model and wind power generation forecasting model based on neural network are established. Compared with the traditional forecasting model, the future short-term load and wind power generation are compared respectively. The accuracy of the proposed method is verified by the prediction of the measured quantities. The results show that both the short-term load forecasting method based on neural networks and the forecasting method of wind power generation are suitable for new energy microgrid systems.
Review on operation and maintenance management technology of smart photovoltaic micro grid in plateau cold area
Authors: Pu Zewei 
Published: July 2020

Abstract
Energy crisis and environmental pollution are more and more concerned. The smart photovoltaic micro grid system is in the stage of rapid development because of its clean solar energy as the power source, which has been strongly supported by national policies. Based on a brief summary of the operation and maintenance management technology characteristics of smart micro grid in the United States, the European Union and China’s plateau cold region, this paper analyzes the key parts of smart photovoltaic micro grid system: energy consumption management, system control and system protection. It provides a theoretical reference for the follow-up research.
Synthesis of Mesoporous ZSM-5 Zeolite and Its Adsorption Properties for VOCs
Authors: Huang Daojian , Hu Xiaomei , Zhao Cheng , Wu Yi , Zhou Jinlei , Liu Chengxian , Yun Junge , Chen Dingsheng , Dai Jiqiang , Cen Chaoping , Chen Zhihang 
Published: July 2020

Abstract
A composite template method was used to synthesize a ZSM-5 molecular sieve containing intracrystalline mesopores. In this paper, the charge ratio and the amount of mesoporous template have been set as variables. The synthesized samples were characterized through XRD, TEM and BET and its absorption performance of toluene has been qualitatively analyzed. The results showed that the synthesis of ZSM-5 structure required a suitable charge ratio and the amount of composite templating agent. The specific surface area of molecular sieve with ZSM-5 structure can be up to 499 m2/g, which charge ratio was 0.8. Besides, the maximum of adsorption amount of static adsorption and adsorption rate of dynamic adsorption were 265 mg/g and 16.75% respectively.
Research on the Influence of Circulating Cooling Water on Electrochemical Scale Inhibition
Authors: Geng Man , Zhong Shaotao , Wang Guangwu , Cui Pengfei , Chen Dingsheng 
Published: July 2020

Abstract
Electrochemical water treatment technology can effectively prevent the formation of scales. In this paper, the electrochemical workstation is used to explore the process of cathode scale formation and its influencing factors under different conditions. The results show that the electrochemical scale inhibition can effectively remove Ca2 + and Mg2 + in water. When it comes to scale inhibition, and it provides theoretical analysis and experimental basis for solving the scaling problem of the external cold spray water of the high-voltage DC valve cooling system.
Effect of Dust Fall in an Emerging Industrial City on the Growth of Eichhornia Crassipes
Authors: Liao Shaohua , Zhao Ya , Li Wencai , Yang Lu 
Published: July 2020

Abstract
PM2.5 is the focus of current research, but the dust fall seems relatively insignificant. The effect of dust fall on the growth of Eichhornia Crassipes was studied in this paper. Through macroscopic experiments, the apparent characteristics of Eichhornia Crassipes before and after dust fall, including weight increase, root length and leaf number, were studied. At the same time, the changes of pH value, TP and TP of Eichhornia Crassipes in water environment before and after dust fall were studied. The change of pH value was not significant, but dust fall strongly inhibited the absorption of TP and TN by Eichhornia Crassipes. The dust fall contains nutrients such as C, N, P, Cu and Zn required for plant growth, however, the positive effects of the nutrient elements provided by dust fall on the growth of Eichhornia Crassipes were smaller than the negative effects on the quality, root length and leaves of plants. The results of Evans blue staining showed that the cells of Eichhornia Crassipes were obviously damaged by dust fall at the cellular level. The heavy metals (such as Cu and Pb) in the dust fall may play an important role for the negative effects of this test.
Investigation Report on the Effects of Selenium on Human Health in Guanzhong Area
Authors: Li Aorui , Qiao Xinxing , Ji Huawei , Ren Rui 
Published: July 2020

Abstract
120 respondents which from selenium-rich and selenium-poor areas respectively were investigated and analyzed by means of questionnaire survey and statistical analysis to study the relationship between soil selenium level and human health in GuanZhong area, shaanxi province. Studies have shown that the incidence of diabetes (X

2
= 4.25, P < 0.05), coronary heart disease (X

2
= 4.63, P < 0.05) and gastritis (X

2
= 6.67, P < 0.01) in selenium-poor areas in GuanZhong area, shaanxi province is significantly higher than that in selenium-rich areas. It is urgent to adjust the dietary habits in the selenium-poor areas, and pay attention to proper intake of selenium-rich food in daily diet, so as to prevent and treat the related diseases caused by selenium deficiency.
Discussion on Printing and Dyeing Wastewater Treatment Methods
Authors: Sun Wen , Yang Ke 
Published: July 2020

Abstract
With the rapid development of the printing and dyeing industry, a large amount of industrial wastewater will be produced in the production process of the printing and dyeing industry. If these wastewaters are not treated, they will pose a serious threat to the ecological environment and human health. This article summarizes the characteristics and research progress of the physical, chemical, and biological methods currently used in the treatment of printing and dyeing wastewater, and provides a good basis for future research and development.
Study on the influence factors of the release characteristics of IQOS cigarette smoke
Authors: Tong Yuxing , Xiong Zhe , Gao Song , Yan Qunshan , Liu Zhichang , Wang Ziwei , Le Xi , Shu Hao , Tang Xiangbin , Li Pengfei , Xiong Yimin , Wang Yi 
Published: July 2020

Abstract
In order to clarify the reasons for the good smoke release characteristics of IQOS, the factors that are beneficial to the smoke release characteristics of IQOS were studied by comparing the K (the amount of released smoke was less) and IQOS. The components of IQOS and K which were easy to be released were characterized by the GC-MS. The thermal release characteristics of IQOS, K and the original tobacco powders of K were characterized by the thermogravimetric analyzer (TG). The main compounds of the released smoke of IQOS and K were characterized by Py/GC-MS at two typical heating temperatures (260 and 330°C). The results show that: 1) the actual heating temperature of the IQOS was higher (330°C), which could promote the release of smoke. 2) IQOS tobacco stick has a porous structure with higher specific surface area, which was beneficial to the release of smoke. 3) IQOS contains more components which were easy to be released, thus the high concentration of smoke could be formed. 4) Though the content of the atomization agent in IQOS was lower than that in K, more atomization agent in IQOS could be released at the tobacco cracking temperature (330°C), thus the atomization property of IQOS was better.
Relationship between the particle size and nutrient distribution of feces and nutrients in pigs and dairy cows and the efficiency of solid-liquid separation
Authors: Wu Junwei , Zhong Xianjin 
Published: July 2020

Abstract
In this paper, pig and dairy manure were used as materials, and the particle size distribution of pig and dairy manure was analyzed according to different particle sizes of <0.15, 0.15-0.5, 0.5-1.0 and> 1.0mm. At the same time, NPK in four different particle sizes were analyzed. The nutrient content was solid-liquid separated by using XY-type spiral livestock and poultry manure solid-liquid separators under 0.5 and 1.0mm sieve screens. The mechanical solid-liquid separation was used to analyze the solids and nutrients of the corresponding particle size feces. Recovery efficiency. The results show that the particle size distribution of pig and cow manure is mainly <0.15mm small particles. Such small particles account for 57.99% -68.34% of the weight of the manure. The particle size of dairy manure particles is larger than that of pig manure. Less than fattening pigs and lactating cow feces. Nearly 80% of N, P, and K nutrients in pig and dairy manure are water-soluble or exist in small particles <0.15mm. The percentage of N and P nutrient recovery from solids and solids obtained from mechanical solid-liquid separation of feces is higher than the proportion of fecal particles and nutrients from the corresponding screen pore size. %, N, P nutrient recovery rates were 7.14-19.71, 7.38-21.18%, respectively.
Application and Improvement of Wet Oxidation Technology
Authors: Zhang Yongxun , Wang Yibo 
Published: July 2020

Abstract
The common treatment methods for industrial biodegradable industrial waste-water are physical, chemical and biological methods, but the conventional methods have complicated and inefficient treatment processes. Wet air Oxidation (WAO) technology can effectively treat industrial biodegradable industrial waste-water. WAO has achieved good results in the treatment of pesticide waste-water, dye waste-water, activated sludge and phenol-containing waste-water. The CODCr removal rate of waste-water reaches 72.3 %∼95.3 %. In order to further improve the application effect of WAO technology, three improvement approaches have been developed: Catalytic Wet Air Oxidation, Catalytic Wet Supercritical Oxidation, and Catalytic Wet Peroxide Oxidation.