bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of different alternative soil forming materials on soybean growth index and yield
Authors: Liu Zhe , Wang Huanyuan , Cao Shiliu 
Published: July 2020

Abstract
Aiming at the problems of soil poor and the decrease of cultivated land in the alluvial fan area in the northern slope of the Qinling Mountains, the selection of suitable alternative soil-forming materials to improve the soil in the piedmont area could provide a scientific reference for the improvement of soil quality. Therefore, we chose six different alternative soil-forming materials treatments, including vermiculite (M1), perlite (M2), clay shale (M3), gravel (M4), sand (M5), and soft rock (M6), which mixed with soil at a ratio of 0.5 L·m2 for field soybean planting experiments, respectively. The results showed that the order of soybean plant height from high to low in 6 different alternative soil-forming materials was M2> M6> M3> M5> M4> M1, the chlorophyll value of M2 and M3 was larger than that of the other four treatments, and the range of increase was 20.9%-26.6%, the figures showed M2 treatment was the most suitable for soybean plant growth. For soybean root dry weight, 100-grain weight and yield, the soybean root dry weight, 100-grain weight and yield under M2 and M1 treatment were larger. Comprehensive analysis of crop growth indicators and yield showed that M2 treatment was the most suitable as an alternative soil-forming material for soybean growth and soil improvement in mountainous areas.
Distribution of Polycyclic Aromatic Hydrocarbons in Coal Gangue with Different Metamorphic Degrees
Authors: Chen Dong , Wen Xueqin , Zeng Fangui , Huang Dongmei 
Published: July 2020

Abstract
The contents of 16 US Environmental Protection Agency (EPA) polycyclic aromatic hydrocarbons (PAHs) in coal gangue samples with different metamorphic degrees (R0,max=1.21%, 1.47%, 1.84%, 2.05%, 3.30%) have been measured by high performance liquid chromatography (HPLC), and the characteristic distributions of PAHs in samples are studied. The results suggest that all the contents of high molecular weight polycyclic aromatic hydrocarbons (HPAHs, 4-6ring), low molecular weight polycyclic aromatic hydrocarbons (LPAHs, 2-3ring), total polycyclic aromatic hydrocarbons and the toxicity of PAHs in samples increase first and then decrease as the increase of vitrinite reflectance. The proportion of LPAHs in the ∑16PAHs decreases first and then increases, while HPAHs is opposite. Furthermore, Ant/(Ant+Phe) ranges from 0 to 0.03, Flua/(Flua+Pyr) ranges from 0 to 0.37, BaA/(BaA+Chr) ranges from 0.04 to 0.14, and total index range from 0.64 to 1.66 in samples, all of which could provide a reference for judging the source of PAHs.
Preparation and properties study of graphene-enhanced acid-resistant anticorrosion coating for subsea oil and gas
Authors: Wang Lei , Han Zhongzhi , Shi Jiafeng , Ding Chao , Liang Hao , Zhang Yanjun , Zhang Liping , Guo Xiaojun 
Published: July 2020

Abstract
In order to solve the corrosion problem of the existence of acidic material such as H2S, CO2 in the subsea pipelines, this article studied the coating film forming matter, which is combined with phenolic epoxy resin and phenolic aldehyde amine, acid-resistant filler system, etc. With the addition of the graphene dispersion, it significantly improves the abrasive resistance, salt fog resistance, adhesion and chemical character. This article took out the coating with good acid resistance. The results showed that the acid-resistant anticorrosion coating enhanced by graphene has excellent comprehensive physical and chemical properties, such as salt fog resistance, chemical resistance, hydrogen sulfide corrosion resistance, and alkali resistance, which meet the corrosion protection requirements of H2S and CO2 in acidic oil and gas fields subsea pipelines.
Identification and characterization of complicated lithological traps within sequence stratigraphic framework – A case study in Yacheng uplift, Qiongdongnan Basin
Authors: Li Anqi , Deng Yong , Hu Lin , Ye Qi , Qiu Yu 
Published: July 2020

Abstract
With the increasing of lithologic reservoir reserve ratio, lithologic traps are playing an increasingly important role in worldwide oil and gas exploration. Focusing on the lithological traps in the Yacheng Uplift area, Qiongdongnan Basin, this paper introduces a work flow for identification and characterization of lithological traps within sequence stratigraphic framework. The first stepis to divide the Miocene Meishan and Sanya formation in the Yacheng Uplift area into 2 third order sequences and 5 fourth order sequences (SQ1-SQ5), and to indentify the type, characteristics and distribution of lithological traps, thus confirming the main type of lithological trap is muddy channel lateral-sealing traps which are concentratedly distributed in the highstand system tract (SQ3) of Sanya formation. The second step is to quantitatively characterize the shape, channel lateral-sealing effectiveness and oil-gas-bearing possibility of the traps by some geophysical methods such as seismic attributes, seismic slice, pre-stack and post stack acoustic inversion. By using the above techniques, a lot of channel lateral-sealing lithologic traps have been found and accurately evaluated, thus putting forward the new oil and gas exploration direction in the study area.
Research on Optimal Design of Dual Derrick for the 7th Generation Ultra-Deepwater Offshore Platform
Authors: Jiang Faguang , Zhang Min , Yang Xiuju , Liang Zheng , Wang Anyi 
Published: July 2020

Abstract
To solve the problem of small safety factor and heavy structure of dual derrick of the 7th generation ultra-deepwater offshore platform, the optimal design of the dual derrick is studied. Using ANSYS software, the mechanical property of dual derrick under the storm self-storage condition is analyzed. Taking the mass and safety factor of the dual derrick as the target and the beam section parameters as the design variable, after the single factor optimization, the response surface method is used to establish the comprehensive optimization mathematical model of the section parameters. The optimal combination of the section parameters is obtained. The results show that the safety factor of the original design of the dual derrick in the storm self-storage condition is less than 1.67 as required by API Spec 4F, and the bottom leg of the derrick is the most dangerous. Compared with the original scheme, the final optimization scheme of dual derrick reduces the mass by 19.11% and increases the safety factor by 23.81%, which meets the requirements of operating conditions.
Discussion on Technical Review System of Report for Soil and Water Conservation in Binzhou
Authors: Li Miaomiao , Zhang Runmingzi 
Published: July 2020

Abstract
Suffering severe soil and water loss, the Binzhou City needs efficient technical review system of report for soil and water conservation to curb erosion and improve the urban environment. In this article, the implementation, work contents, process of the current report review system are systematically summarized, and three suggestions are made to improve the system: firstly, clarify the review criteria; secondly, strengthen the management of expert database; thirdly, promote experts training.
High Standard Farmland Construction and Soil Conservation Evaluation
Authors: Zhang Jing , Sun Lu 
Published: July 2020

Abstract
In China, the quality of cultivated land is reduced, and the available cultivated land area is reduced. In order to ensure food security, the country has orderly promoted the construction of high standard basic farmland. However, there is a lack of reasonable evaluation on the high standard farmland. The evaluation of high standard farmland mainly focuses on the natural conditions of farmland and the suitability of farmland to social and economic conditions. A large number of recent studies have found that soil microorganisms have a significant impact on the quality of cultivated land. In order to evaluate the high standard farmland more reasonably, this paper attempts to add microbial factors to the high standard farmland construction evaluation, and build a more reasonable high standard farmland evaluation system.
Theory and mechanical analysis of Tube Hydroforming of hollow component
Authors: Li Hongyang , Huang Ran , Li Jianhui 
Published: July 2020

Abstract
Tube hydroforming is efficient plastic technology in manufacturing hollow components and is attracting more attention in the past decades. In this paper, the mechanical theory of hydroforming was studied. The external load character and internal stress character of tube hydroforming were discussed. Then, according to the characters, the function and classification of internal pressure were presented in general. Base on the stress analysis, its effect on the yield criterion and calculation formula were also researched and derived. It demonstrates that processing parameter plays an important role in tube hydroforming and formula discussed and derived by this paper is feasible in practice.
Analysis of anchor bolt stress characteristics in arch ring support of super-large underground powerhouse
Authors: Wu Hao , Liu Jian , Zhang Shujun , Zhao Chunlin , Li Xiuwen , Tian Dongcheng 
Published: July 2020

Abstract
Taking the surrounding rock deformation and bolt stress response characteristics during arch excavation of the left bank underground powerhouse of baihetan hydropower station as the research object, On the basis of the monitoring data of anchor stress, anchor rod stress response characteristics summarized as three types including “stepped”, “one pull one press” and “load drop”, and preliminary discussed the mechanism of bolt stress. The research results can provide important technical support for the reinforcement design of cavern in the following similar projects and have guiding significance for engineering practice.
Study on Uranium Occurrence State of Sandstone-Type Uranium Deposits in Qianjiadian Region, Songliao Basin, China
Authors: Zhang Bo , Li Jianguo , Miao Peisen , Si Qinghong 
Published: July 2020

Abstract
The Qianjiadian uranium deposit is located in the southwest margin of Songliao basin. In this paper, electron probe, energy spectrum, back scattering analysis, scanning electron microscopy and other experimental methods are used to study uranium occurrence form and uranium mineral type in Qiandaidian uranium deposit. The results are shown as follows. (1) The occurrence forms of uranium in Qiandaidian uranium mining area include uranium minerals, adsorption uranium. The uranium in low-grade ore is mainly in the form of dispersive adsorption, which is clay mineral and organic matter adsorption. The high-grade ore mainly exists in the form of uranium mineral, the type of uranium mineral is mainly pitchblende, followed by coffinite, a small amount of uranium mineral containing titanium. (2) Uranium minerals are often closely symbiotic with pyrite, carbonate and so on, most of them develop in the pyrite, carbonate margin and fractures in the form of colloidal, there are also granular, pellet independent distribution. (3) Uranium minerals are rich in Phosphorus, and there is an obvious positive correlation between Phosphorus and Silicon. It has been found that some samples contain phosphorus-rich uranium aggregates in microspheres, which is considered as a strong evidence that microorganisms are involved in uranium mineralization at low temperature.
Characteristics and major controlling factors of fracturing in an Archean buried-hill, Bozhong Sag, Bohai Bay Basin, China
Authors: Dai Xiaojuan , Tang Huafeng , Zhang Yan , Song Guomin , Du Xianli 
Published: July 2020

Abstract
Archaeozoic fractured buried-hill reservoirs have been found in the Bozhong Sag, Bohai Bay Basin, but the origin, stage and distribution of fractures are still unclear. The B-block is used as an example to explore the genesis and main controlling factors on fracture formation. Core and image log data, combined with regional geology, were used to comprehensively analyze the characteristics of fractures. High-angle shear fractures and low-to moderate-angle tensile fractures were developed in the area. Fracture development was mainly controlled by lithology. The lithologies in the study area from most fracture prone to least are monzonite, granodiorite, cataclastic rock and gneiss. This study has provided a basis for the prediction of potential reservoir areas in paleo-buried hills.
3D printed cellulose-based high-efficiency oil-water separation mesh
Authors: Zhang Xinqi , Wu Yifei , Gao Yuan 
Published: July 2020

Abstract
In this study, a high-performance oil-water separation mesh based on cellulose was fabricated by Direct Ink Writing (DIW) 3D printing technology. The 3D printing process can be undergo in a natural environment by using a cellulose acetate/ethyl acetate solution as a DIW printing ink. This oil-water separation mesh prepared has various advantages, such as uniform size, controllable aperture, simple and easy printing process, and rapid prototyping. The super high separation efficiency of 96 % and the high flux of 400 000 L·m−2·h−1 can be realized when the average pore size of the 3D printed super-hydrophilic cellulose mesh is 280 μm or less. Moreover, oil-water separation mesh prepared based on highly hydrophilic cellulose are chemically resistant to extreme acidity and alkalinity. It is also capable of separating oils of various viscosities. In addition, the cellulose mesh can cope with the mechanical force caused by high-frequency vibration, and maintain excellent oil-water separation efficiency in the external force field. Therefore, this highly efficient oil-water separation mesh can be used in oil-water separation processes in a variety of applications.
Exploratory Research on Full Cycle Sintering of Flue Gas
Authors: Shi Kejian , Feng Junxiao , Du Zhiwei 
Published: July 2020

Abstract
The pollution caused by sintering process in China’s iron and steel industry is especially serious. Strengthening the research on sintering process is of great significance to sustainable development. In this paper, a physical model of flue gas full-cycle sintering process is established, and the new process is simulated and calculated. The distribution of material layer temperature, flue gas temperature and flue gas composition content is obtained, and compared with the conventional sintering process from the five aspects of material layer maximum temperature, high temperature duration, material layer cooling speed, sintering time and emission reduction. The results show that the new process can increase the maximum temperature of the upper material layer, improve the uniformity of the temperature distribution in the material layer, and can enrich SO2, improve the removal efficiency of pollutants, and reduce emissions.
Analysis of Lithium Battery Recycling System of New Energy Vehicles under Low Carbon Background
Authors: Wang Zhe 
Published: July 2020

Abstract
China’s new energy vehicle sales exceeded 1 million units for two consecutive years in 2018 and 2019. China has actually become the world’s largest new energy vehicle production and sales market. Batteries are the core components of new energy vehicles. The current research and development of power batteries mainly include lead-acid batteries, nickel metal batteries, lithium batteries, super capacitors, fuel cells, solar cells, etc. Among them, lithium batteries are one of the main application categories in the current market. Due to the limited life of lithium batteries, the earliest batch of new energy vehicle lithium batteries in the market is at the threshold of elimination. How to effectively recycle and use lithium batteries has become an unavoidable environmental and social issue. This paper first briefly introduces the current status of China’s new energy vehicle and battery industry, then analyzes the problems of China’s new energy vehicle battery recycling system, and finally, puts forward some suggestions based on China’s national conditions and industry status.
Research on Green Building Energy Saving and Environmental Protection Design Based on BIM Technology
Authors: Lin Qiyan 
Published: July 2020

Abstract
At present, the construction industry consumes a large proportion of energy and causes serious problems to people’s living environment and living space. Therefore, the energy conservation and environmental protection of green buildings have become the focus of the construction industry. In order to make green buildings continuously improvement and sustainable development. By analyzing the advantages of BIM technology and applying it to green buildings, it simulates and analyzes important evaluation parts such as indoor lighting, outdoor acoustic environment simulation, indoor acoustics, and outdoor wind environment simulation of green buildings, and optimizes them in time to achieve energy saving of green buildings, and purpose of eco-friendly design.
Review and prospect of fog elimination technology based on acoustic condensation
Authors: Liu Chang , Tian Zhangfu , Zhao Yun , Zeng Xinwu 
Published: July 2020

Abstract
This paper summarizes the traditional artificial fog elimination technology and the principle and mechanism of acoustic condensation theory, reviews the simulation experiment research and application of acoustic condensation fog elimination technology. Compared with traditional fog elimination technology, sum up the advantages and disadvantages of acoustic condensation fog elimination technology. Put forward the existing problems and future research direction of acoustic condensation fog elimination field.
Analysis on Spatial Pattern Changes of Land Resources Utilization and Soil Pollution Sources in the New Period
Authors: Guo Bin , Liu Ning , Sui Haozhi 
Published: July 2020

Abstract
Land use change is an important part of global change, and land use research has also become the focus of global change research. With the growth of population and the economic development of society, the relationship between human beings and land is getting closer and closer, and the interaction is getting stronger and stronger. The resources and environmental problems brought by it have also received strong attention from all walks of life. The use of change has become a major factor in environmental change. At present, environmental problems have become the key link in ecological problems, and in environmental problems, soil pollution is one of the major sources of pollution. Soil pollution can affect crop yields and even contaminate groundwater, so soil pollution has always been a key link in pollution prevention. This paper introduces the connotation and related theories of land resource utilization change, and analyzes the formation and classification of soil pollution sources and the problems of land resource space utilization in the new era. On the basis of reviewing the status quo of soil pollution in China, this paper analyzes the risk analysis and damage of soil pollution, and studies the spatial and temporal pattern change of land use and soil pollution control countermeasures in the new period. In recent years, China’s environmental problems have become increasingly prominent, including soil pollution is relatively serious, soil pollution has a certain uniqueness, relatively hidden, lagging and long-lasting, it will cause pollution to crops and food, which in turn affect people’s health and soil pollution. Not only does it affect humans through crops, but it can also enter the human body through direct contact or breathing, causing harm to the human body. The research and analysis in this paper is to achieve the sustainable use of land resources in the new era and to ensure that people have access to adequate and safe food and living environment.
Evaluation and Strategy of New-type Urbanization Policy Based On S-CAD Method - A Case Study of Wuhan, China
Authors: Wei Wei , Li Mengchen , Jiao Yongli 
Published: July 2020

Abstract
Using S-CAD policy evaluation method to carry out effect, economic and feasibility analysis on Wuhan’s new urbanization policy, the evaluation results show that the logic, needs and feasibility of the policy elements are good, and the adequacy of the policy chain is relatively inadequate, Wuhan’s various policies promote new-type urbanization effectively and implement the central-level strategies and goals. The next step is to increase efforts to promote equalization of public services, regional coordinated development, and urban quality improvement. Through the case study of Wuhan, it is verified that the S-CAD method is a meta-method and policy evaluation system that combines political wisdom and scientific knowledge, taking into account qualitative judgment and quantitative analysis, and can be applied to the evaluation of new urbanization construction in cities.
Research on Scientific Strategy and Technology of Agricultural Non-point Source Pollution Control
Authors: Tang Jinli 
Published: July 2020

Abstract
In order to explore expansion of agricultural non-point source pollution in China is mainly related to excessive use of chemical fertilizers and pesticides, backward fertilization methods, low utilization of organic waste in the aquaculture industry, insufficient promotion of advanced agricultural technologies, and relatively weak public environmental awareness. This article focuses on the research directions of agricultural and rural pollution control and environmental protection, efficient recycling of fertilizer resources, and environmental control of production areas, and carries out related technical and environmental engineering constructions. In this paper, in the process of fully grasping the growth of crops, we will increase the technical research on environmental engineering This article studies the use of effective environmental regulation engineering technology to develop the agricultural.
Pollution Control of Exhaust Emissions of Marine Diesel Engines
Authors: Sun Changfei , Li Yong 
Published: July 2020

Abstract
This paper describes the impact of marine diesel engine exhaust gas on the atmospheric environment and the international control requirements for marine diesel engine emissions internationally; introduces the current technical measures to reduce emissions of diesel engine exhaust pollution. On this basis, the advantages and disadvantages of each measure and the application scopes are explored.