bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Correspondence between ELV Exemption and Auto Parts Products
Authors: Hou Meng , Li Longhui , Wang Lei 
Published: August 2020

Abstract
Restricting the use of hazardous substances in automobiles has become an inevitable trend for the green development of automotive products. In China, the technical requirements for hazardous substances in automobiles stem from GB/T30512 “Requirements for Prohibited Substances in Automobiles”, and the standard is currently undergoing strong revisions. One of the core contents of the standard is the exemption list, which stipulates the compliance content and distribution of hazardous substances in automobile products. This article analyzes the scope of auto parts and materials covered by each exemption list for the exemption list, constructs the corresponding relationship between the exemption list and auto parts in principle, and provides guarantee for the implementation of subsequent standards.
The Investigation of Oxidation Flocculation Characteristics of Ferrate Solution
Authors: Pan Haowei , Zhang Liang , Gao Ning , Liu Yin , Li Wei , Jia Bo 
Published: August 2020

Abstract
The fresh ferrate solution was prepared by in situ electrolysis method and directly added into the simulated surface micro-polluted water to proceed purification and pretreatment process. To explore the influence on the dosage of ferrate and pH of raw water, the simulated water sample was treated by single factor change coagulation experiment. Combining with turbidity, ammonia nitrogen, humic acid removal rate as the judgment index, and the fractal dimension of floc was calculated by using the platform of floc morphology analysis, the optimal dosage of the ferrate solution and reaction pH range were confirmed. This work revealed profoundly the correlation of turbidity, ammonia nitrogen, humic acid removal rate and flocculation fractal dimension.
Research Progress on Farmland Soil Heavy Metal Pollution and Remediation Technologies in the Yangtze River Basin
Authors: Zhang Yujing , Wu Wanjing , Zhang Duwei , Huang Hongkun , Fang Ping 
Published: August 2020

Abstract
Farmland pollution directly affects the economic benefits of crops and food security. In recent years, the condition of farmland soil in China is not optimistic, and its pollutants are mainly heavy metals. Soil is the basic condition for biological survival and the final melting and disintegration of pollutants. China’s soil pollution control work urgently, soil pollution control situation is more serious. In the process of economic transformation advocated by the state, pollution control should be strengthened, and soil ecological remediation technology should be vigorously studied and popularized, so as to effectively prevent soil pollution and meet the needs of sustainable development in China. This paper studies the research progress of heavy metal pollution and remediation technology in farmland soil in the Yangtze river basin, analyzes the current situation of farmland soil pollution in representative cities in the Yangtze river basin, and summarizes the main remediation methods of heavy metal pollutants, especially in farmland soil.
The Impact of the Financial Fund on the Efficiency of Waste Electrical and Electronic Products Processing in China
Authors: Chen Shuai , Yang Jiameng , Gao Qianhui , Xing Yingxue 
Published: August 2020

Abstract
With the support of the fund, the recovery and dismantling volume of WEEE in China have been greatly improved, but it is far away from the provisions of the long term planning for the construction of renewable resources recovery system. In the paper, the development of waste electrical and electronic products processing field is analyzed, from which we find the shortcomings of the existing electronic waste fund operation in China. First of all, the paper analyzes the influence of household appliances dismantling fund on household appliances production industry by using partial equilibrium model, and finds that expropriation fund is not the main reason for enterprises to adjust their production and operation strategies and adopt ecological design. Through further analysis, it finds that the main reason for enterprises to adopt ecological design is firstly attributed to the public’s increasing attention to health, and secondly to the environmental standards and sections issued by the government subsidy and other policies directly related to ecological design. In terms of the fund subsidies, DEA model is used to analyze the impact of fund subsidies on the dismantling and treatment industry. The model results show that fund subsidies are effective for the dismantling and treatment of 5 major electronic waste products. On one hand, they alleviate the loss of enterprises; on the other hand, they promote energy conservation and emission reduction, and improve the efficiency of dismantling. The economic benefit, environmental and resource benefit and social benefit of the fund of dismantling and processing enterprises are all affected by the fund subsidy. Finally, it gives policy implications. In order to improve the financial efficiency of the fund, it is suggested that in the aspect of fund policy management, we should appropriately improve the current fund collection standards, adjust the products and scope of the fund collection catalogue, and formulate differentiated collection standards for the products with different environmental protection performance, so as to realize the incentive and constraint of the fund collection on the production enterprises. In terms of the fund subsidy, we should further adjust the design of subsidy amount, establish a long-term subsidy performance evaluation system and a qualification examination mechanism for enterprises entering and exiting the subsidy list, ensure the effectiveness of fund subsidy distribution, narrow the gap in the fund pool, reduce the waste of fund subsidy, and achieve the unity of economic benefits, resources and environmental benefits and social benefits.
Monitoring and Modelling Abandoned Agricultural Land Based on Multisource Data Integration
Authors: Yang Tong , Guo Xudong , Yu Xiao , Wang Xiaofan , Han Shengqi 
Published: August 2020

Abstract
Given the sustained growth of the global population, the problem of abandoned agricultural land (AAL) has gradually attracted the attention of governments and scholars. Here, four high-resolution remote sensing data sources (Sentinel-2A satellite, Resources satellite 3, Gaofen-1 satellite, and Gaofen-2 satellite) and two geographic information survey data sources (land use data and returning farmland to forest data) were used in combination. An integrated method of combined annual and interannual detection was used to monitor AAL. The integrated method produced total abandonment information and distinguished the types of AAL (completely AAL, half-AAL, and transitional AAL). By data mining the monitoring results, eight driving factors of abandonment were determined at the plot scale, including village distance, height difference, highway distance, plot area, fractal dimension index, shelter forest, irrigation condition and neighbourhood characteristics. The logistical regression results showed that seven independent variables except village distance had a significant impact on abandonment, and the prediction accuracy of the model was 95.4%. This study can be applied to monitoring AAL and analysing the driving forces of abandonment.
Research on the Construction of Green Consumption Cognition and Attitude Evaluation System of Clothing
Authors: Li Huan , Yao Lei 
Published: August 2020

Abstract
With the increasingly serious environmental problems, people gradually begin to pay attention to environmental protection issues. Our country as the largest country in textile and clothing production, consumption and export, China’s production and energy consumption is an important factor of environmental problems. At this stage, there is no specific and complete system of environmental-friendly clothing, furthermore there is few related research. By using the method of literature review, this paper makes a comprehensive analysis of the whole theoretical system of green consumption, and probes into the evaluation of consumers’ cognition, attitude and purchasing behavior of environmental-friendly consumption to construct the evaluation system of environmental-friendly clothing.
Technical and Economic Analysis of External Wall Thermal Insulation for Nearly Zero Energy Buildings Based on Life Cycle Cost
Authors: Liu Wei , Yu Zhen , Li Huai , Gao Caifeng , Wang Guanqun 
Published: August 2020

Abstract
The outer protective structure of nearly zero Energy building generally has better thermal insulation performance. With the increase of the thickness of the external wall insulation, the energy conservation gains decrease. This paper studies the economics of the life cycle cost of the external wall insulation of nearly zero energy buildings in different climate zones. Considering solar radiation and nocturnal radiation, an explicit one-dimensional unsteady heat conduction model is established by using the finite difference method, and the temperature of each point inside the wall at various times within 8760 hours of the year is calculated, thereby calculating the annual heat transfer amount per unit wall area. Considering the construction cost, annual operating cost, and discount rate, calculate the cost of the life cycle of the insulation material under different thicknesses in each climate zone. The best economic thickness of each insulation material in each climate zone is obtained.
Optimization of Close-Range Blasting Design with Vibration-Damping and Speed-Reduction for Open-Pit Mine in an Arid Region
Authors: Chen Yajun , Li Yongwu , Wang Zhixiang , Mao Jin-Feng , Zhou Liyun 
Published: August 2020

Abstract
Based on many years of on-site work experience and analysis of the impacts of heterogeneous rock mass structure, rock joints and fissure on blasting in arid regions, it is recognized that deep-hole blasting of heterogeneous rock mass will cause vibration damage to ground building structures. In addition to the influence of lithological structure, it should also take into consideration the distance variations between the location of the blast and the ground building structures. Designing an optimized blasting scheme with shock-absorption and velocity-reduction, together with safe and suitable key blasting technologies for heterogeneous rock, is core to address the safety issues of blasting vibration impact on ground building structures. For this reason, taking the blasting vibration of the second mining area of Mulei Kaiyuan Open-pit Coal Mine as an example, through survey and analysis of the seismic standards of ground buildings, operating environment and geological conditions of the blasting area, an optimized blasting network is proposed. This network involves a key technology that combines multiple blasting unit forms aiming at the realization of unit-dosage multi-stage millisecond blasting of whole or layered interval detonation. The optimized design offers five types of shock-absorption and velocity-reduction multi-stage millisecond denotation networks based on different blasting distances. Together with open-pit coal mine blasting technology, this design can effectively solve the safety issues of close-range blasting vibration on ground building structures.
Research on the Influence of Communication Time-Delay on Multi-agent System Based Distributed Energy Dispatching Control Consensus
Authors: Wu Jike , Zhu Bingquan , Li Yong , He Yujun 
Published: August 2020

Abstract
Multi-agent based distributed control methods are widely applied in distributed energy dispatching control. However, the control processes are highly dependent on the information interaction among the distributed generation units through the communication network. The communication time-delay would affect the performance and stability of the multi-agent based distributed energy dispatching control system. To investigate the effect of communication time-delay on the dispatching control, the incremental cost rate in the economic dispatch model is adopted as consensus variables of multi-agent system, and a multi-agent system with communication time-delay based distributed energy dispatching control consensus algorithm is proposed. Moreover, two cases simulations are implemented and the effects of the time-delay on the consensus convergence are analyzed. This work provides a reference for the optimal design of distributed energy dispatching control.
Decentralized Coordinated Dispatch of Multi-microgrid Integrated Energy System Considering Source-Load Uncertainty
Authors: Chen Bo , Li Yuwei , Li Peng , Wu Difan 
Published: August 2020

Abstract
Multiple microgrids are connected to the regional electric power distribution system (EPS) and natural gas distribution system (NGS) to form a multi-microgrid integrated energy system (MMIES), where each stakeholder’s game behaviour and renewable energy uncertainty increase the complexity of dispatch decisions. In view of this, a decentralized coordinated dispatch model of MMIES considering source-load uncertainty is proposed in this paper. Firstly, based on fuzzy theory, the forecasts of wind/PV output and system load are described by fuzzy parameters, and consequently fuzzy chance constraints based on credibility theory are established. Secondly, for multi-stakeholders including EPS, NGS, and microgrid operator which consists of multiple microgrids, a decentralized dispatch model is established with the goal of maximizing each stakeholder’s interest considering network security constraints. Then, the fuzzy chance constraints are turned into their clear equivalent forms based on trapezoidal membership parameters, and the analytical target cascading algorithm is designed to decouple the coordination variables and solve the decentralized dispatch model collaboratively. Finally, an example of MMIES is carried out to verify the feasibility and effectiveness of the proposed method. Simulation results show that the method considers the source-load uncertainty and each stakeholder’s interest and realizes the reliable and economic optimal operation of MMIES.
Reference Inventory of 210Pb in Soils of Chinese Mainland
Authors: Yang B J , Sun W , Wang X L , Zhang M L 
Published: August 2020

Abstract
Naturally occurring fallout 210Pb is strongly adsorbed by soils and has been widely used as a tracer to soil erosion and deposited sediments in various sedimentary environments. The determination of reference inventory is the premise and basis of soil erosion research using this technique,it is directly related to the accuracy of erosion rate calculation. This paper starting reports from the selection of 210Pb reference inventory sampling points, the distribution of 210Pb reference inventory in Chinese mainland is summarized. It is pointed out that the reference inventory is mainly affected by the location of land and sea, climate, topography and other factors.
Application of Sound Insulation Technology in Floating Floor
Authors: Fang Wenmin , Hong Xiaowei , Lai Linfeng 
Published: August 2020

Abstract
In this paper, the sound insulation performance of the floating floor is studied from the perspective of its structural application. The field test shows that the sound insulation improvement value of the dry laying method is higher than that of the wet sticking method. At the same time, the influence of the construction technology of the floating floor on the load and net height of the building structure is summarized and compared. Finally, the weighted standardized impact sound pressure level of the field test is higher than the normalized impact sound pressure level measured in the laboratory This universal phenomenon is analyzed. This paper puts forward the construction technology of dry laying method of floating floor with sound insulation mat, which can provide reference for the construction of sound insulation mat laying on reinforced concrete floor and the design of building structure.
Research on Unregulated Emissions from Motor Vehicles at Intersection Based on the Optimized Traffic Signal Timing
Authors: Zhao Hong , Mu Liang , Cui Xiangyu , Yuan Huantao , Li Yan , Qiu Junzheng 
Published: August 2020

AbstractThis paper centers on optimizing the signal timing scheme to reduce motor vehicle unregulated emissions from motor vehicles at the intersection by the integration method of VISSIM and MOVES. Taking the intersection of Hong Kong Middle Road and Fuzhou South Road in Qingdao as the research object. In VISSIM, according to the traffic flow, the signal timing scheme is optimized. The localized MOVES emission model calculates emissions of formaldehyde, ammonia and benzene. Compared with emissions of regulated pollutants before and after the optimization for the signal timing scheme, the result shows the optimized signal timing improves the passing capacity of the road intersection, and emissions of formaldehyde, NH3 and benzene reduces by 22%, 7% and 14% respectively. The result indicates that the optimized signal timing can effectively reduce motor vehicle unregulated emissions at the road intersection, which provides an effective way to protect the environment.
Effects of Different Substrates on MEC Anode Film Formation and Extracellular Polymer
Authors: Zheng Jinzhu , Li Jianchang , Xu Kunde , Long Xiangang , Sun Helin , Yang Sixia 
Published: August 2020

Abstract
In this paper, a single-cell microbial electrolysis cell (MEC) reactor is used, with activated sludge as the inoculum, glucose, sodium acetate, sodium propionate and sodium butyrate as substrates. The MEC anode film formation and the different nutritional conditions are studied for the influence of extracellular polymers. Experimental research shows that MECs running on different substrates show obvious current density and anode membrane electrochemical activity. MEC anode membrane current density of sodium acetate substrate culture is the highest (12.78 A/m2), followed by glucose and butyl Sodium and sodium propionate. MEC anode electroactive microorganisms can use a wide range of substrates. The energy efficiency of different substrates is different, and the energy efficiency of acetic acid is the highest. The electrochemical activity and hydrogen yield of the anode biofilm are the same as those of the MEC current density. Increasing the inoculum within a certain range is conducive to improving the electrochemical activity of the anode biofilm and the hydrogen yield of the anode film. Further analysis of the composition of the anode membrane biomass and extracellular polymer (EPS) showed that increasing the inoculation amount is beneficial to the increase of the anode membrane biomass. A large number of anode-attached bacteria can produce higher current density and EPS content. The protein in the anode membrane EPS The content is significantly higher than polysaccharides, and as the protein content increases, the electrical density also increases.
Experimental Study on Deliquification with Atomizing Nozzle in Gas Well
Authors: Gao Yutang , Li Xiaobai , Chang Peng , Liu Lei 
Published: August 2020

Abstract
Gas is a clean energy resource in comparison with oil and coal. Liquid-loading problem is frequently encountered in the process of gas production. It would directly cause the production of gas wells decreasing, even off production. A number of deliquification techniques have been suggested for solving this kind of problem, but the available techniques are not yet widely applicable. Based on the analysis, the method of deliquification with atomizing nozzle in gas wells was put forward. The test bench was designed for studying the atomization of nozzles and the liquid entrainment of gas flow. The size distribution of atomized droplets was measured by Malvern laser grain size analyzer. The Sauter mean diameters of atomized droplets were analysed under different two-phase flow conditions. The results indicate that the designed nozzles have good atomization performances and show potential application for reducing liquid loading in gas wells.
The effects of Zr and La2O3 additions on the microstructural and mechanical properties of a Mo-6Si-5B alloy
Authors: Becker J , Giese M , Krüger M 
Published: August 2020

Abstract
In order to improve the application-related properties, as fracture toughness, creep response and oxidation behavior of Mo-Si-B alloys, certain alloying strategies can be applied. Promising alloying partners like Zr and La2O3 may help to enhance the compressive and flexural strength of Mo-Si-B materials. Accordingly, a combination of 1 at.% Zr and 0.5 wt.% La2O3 was chosen in order to improve the characteristic properties of a powder metallurgical (PM) Mo-6Si-5B alloy. The influence of Zr and La2O3 on the phase distribution and the mechanical properties will be discussed by means of three-point-flexure at room temperature as well as uniaxial com-pressive creep tests at elevated temperatures (> 1000 °C). Compared with other PM Mo-Si-B alloys the present Zr-La2O3-strengthened alloy shows highly improved fracture toughness at room temperature.
Novel Al/Al2O3composite foams by direct oxidation conversion
Authors: Chen X , Sun R , Betke U , Scheffler M 
Published: August 2020

AbstractIn this paper we combined an investment casting technique and a direct oxidation conversion (DOC) method to fabricate novel Al/Al2O3composite foams. We treated open cellular Al foams with dense struts in oxidizing atmosphere and obtained novel Al/Al2O3composite foams. These novel-type foams had dense struts, and owned a ternary-layered structure within struts, which consisted of the inner layer of Al, the middle layer of α-Al2O3oxidation scale and the outer layer of α-Al2O3ceramic coating. The resulting foams were characterized with respect to micro and macro structure, phase composition and compression behaviour. Comparing with conventional reticulated porous ceramics (RPCs), the novel composite foams demonstrated a new deformation mode in compression, behaving in accumulative damages instead of catastrophic collapse, with more deformation capacity and better ductility. The DOC approach might inspire a new way to manufacture composite foams, and such foams might be alternatives to other cellular solids for specific applications.
Investigations on metallurgical and mechanical properties of resistant spot welded dissimilar joints between a high manganese steel and a low alloyed steel grade
Authors: Frohwein C , Otto M , Ecke M , Jüttner S , Halle T 
Published: August 2020

Abstract
The present investigation gives a brief overview into the correlation of the amount of molten ferrite and metallurgical as well as mechanical properties of resistance spot welded austenitic-ferritic joints. The fusion rate describes the ferritic quantity in the weld metal and provides a reliable reference to the integrity of dissimilar joints. Metallurgical effects due to varied fusion rates are shown by element distribution, micro hardness measurement and phase analysis. In addition, this work states specific fusion rates which lead to a degradation of the mechanical properties and can be used as a basis for application guidelines. This can be seen in certain tensile tests with single and multiple spot specimens.