bluuebunny/crossref_metadata_2025_split huggingface dataset:
True 3D Fracture Simulation with Geology-engineering Integration of Volume Modification in Jimsar Shale Oil
Authors: Zhang Kui , Xiao Yang , Cheng Leiming , Liu Shouyu , Wang Junchao , Xu Mingqiang 
Published: April 2021

Abstract
The main characteristics of Jimsar shale oil reservoir are of complex structure, strong heterogeneity and great difficulty in fracturing. It is mainly produced by volume fracturing technology, which is easy to form complex fracture networks. At present, the design and parameter optimization of fracturing scheme are not targeted, and the true 3D fracture simulation with geology-engineering integration is particularly important. On the basis of 3D geological modeling, the 3D geo-mechanical parameter distribution is determined by seismic data, logging data, experimental data, etc to simulate the stress environment in which the overburden pressure, surrounding rock pressure and lower strata pressure. And the 3D geo-mechanical parameter model is established by combining simulated analysis of the stress. On the basis of geological model, geomechanical model and natural fracture model, the natural fractures and faults determined by seismic, logging or discrete fracture modeling are integrated into the geomechanical model to complete the true 3D simulation of artificial fracture network based on true 3D geo-mechanical model. This simulation is the practice and improvement of the geology-engineering integration of shale oil reservoirs volume modification technology in Jimsar, which will deepen the geological understanding and strengthens the engineering technology supporting, provides reference basis for the optimization design of fracturing process and the maximization of the volume, and finally realizes the efficient development of shale oil in Jimsar.
High Time-Resolved Measurements of Microbial Activity Levels in Bioaerosols During Typical Heavy Pollution Processes
Authors: Du Shengli , Li Yanpeng 
Published: April 2021

Abstract
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Research on Environmental Protection Factors of Landscape Design in Garden Greening
Authors: Liu Chen 
Published: April 2021

Abstract
At present, landscaping projects are continuously promoting the process of urbanization. As an important project to improve the urban ecological environment and enhance the image of the city, the construction of landscaping projects must fully consider the project benefits and incorporate the low-carbon concept, so as to allow urban garden plant landscape plays a greater role. This article starts with the principles of the application of low-carbon concepts and discusses the key points in the application of low-carbon concepts in urban garden landscape design, hoping to provide people with a better living environment with the help of garden engineering.
Research on the Trust Relationship of Jilin Province Agricultural Products Supply Chain Enterprises Based on the Theory of Green Environmental Protection Block chain
Authors: Yang Jisheng , Sun Xu , Shi Tianxiao , Zhang Yan 
Published: April 2021

Abstract
The successful advancement of the Internet + agriculture strategy in Jilin Province has accelerated the circulation efficiency of agricultural products in Jilin Province, and played a vital role in increasing the income of farmers and encouraging their enthusiasm for planting. Under the background of green environmental protection and low-carbon economy, the block chain technology solves the problems of inefficient information transmission in the supply chain led by core enterprises, low matching of information traceability requirements and capacity status, and endless information islands. Combined with block chain technology, analysis there are problems in the information optimization of the agricultural product supply chain in Jilin Province. The “block chain + agricultural product supply chain” is used to realize the model of decentralization, information sharing, and in-depth cooperation mechanism, so as to realize the coordination of the agricultural product supply chain and effectively improve the agricultural product The value-added process of the supply chain has established a three-party trust model for the government, core enterprises and consumers in the process of building a green agricultural supply chain.
Analysis and improvement measures of defective coal gangue fired brick
Authors: Shen Shanshan , Li Xinghua , Li Chenghui , She Xiaoqing 
Published: April 2021

Abstract
According to the phenomenon of the accident of defective products of finished bricks, combined with fuzzy mathematics and fault tree analysis theory, the causes of the accident are studied. Firstly, the downward method is used to analysis the structure of fault tree and the influence degree of each basic event on the defective top event of finished brick is sorted. Secondly, the trigonometric fuzzy function is used to normalize the probability value of the basic event collected and the probability value of the basic event without statistical data obtained by the expert scoring. The importance of the processed triangular fuzzy probability is quantitatively analyzed and compared and the main factors affecting the top event are obtained. Finally, specific and targeted suggestions are put forward according to the factors causing the top event.
A dam anti-seepage reinforcement design research
Authors: Jian Cheng 
Published: April 2021

Abstract
The earth dam leakage is a major security risk for the water conservancy project. A permeability of the dam, seepage stability analysis, several principles, advantages and disadvantages, and applicability of the dam seepage technology analysis, comparison, selection and validation for seepage control and reinforcement of such works in the future the theory and design basis.
The Maximum Levels of Plastic Product Waste That Can Safely Be Mitigated
Authors: Wei Wenrong 
Published: April 2021

Abstract
we established a management model for plastic waste disposal processes: First, we consider the source and application of each type plastic waste to classify it according to the chemical composition. The waste is then maximized by recycling and degradation which are the two main environmentally friendly treatment. At the same time, we considered the factors affecting the recycling rate and degradation rate and introduced a partial least square regression fitting method to determine the exact relationship between the recycling rate and degradation rate of various types of plastic waste and their respective influencing factors. The maximum amount of plastic waste treated is the sum of the amount of plastic waste recycled and degraded.
Research and Analysis of Maximum Likelihood Parameter Identification Based on The Recursion of Longdongnan Economic Model
Authors: Wang Xuan , Zhang Wanjun , Zhang Feng , Gou Xiaoping , Zhang Jingxuan , Zhang Jingyi 
Published: April 2021

Abstract
By establishing the regional economic model of southeast Gansu Economic Model as the maximum likelihood parameter identification,the maximum likelihood identification is an estimation method based on probability and statistics theory,by constructing the likelihood function with independent variables and maximizing the likelihood function,the model has good statistical properties and is widely used in many fields.However, the research of maximum likelihood identification method is still limited. Therefore, it is of theoretical significance and academic value to study the maximum likelihood identification method for linear systems and Hammerstein nonlinear systems by combining data filtering technique, hierarchical identification principle and multi-innovation identification theory. In order to improve the identification accuracy, maximum likelihood gradient iteration and maximum likelihood gradient iteration based on finite data window are proposed for output error moving average system.This paper holds that the pattern conforms to the requirements of economic development of Southeast Longnan and has a strong reference for other regions.The simulation results verify the feasibility and validity of the identification modeling method.
Pollution study of cool fruit processing process
Authors: Zhang Yongli , Chen Xin , Liu Bei , Wang Qian 
Published: April 2021

Abstract
As one of the traditional foods in China, cold fruit is also the origin of fruit and melon food processing. The main sources of material pollution are raw material pollution, auxiliary material pollution and food additive pollution. The pollution of processing flow, the pollution of processing environment and the pollution of transportation and storage environment constitute the pollution of processing and transportation. Waste water is an important part of pollution in cold fruit processing.
Anti-depression effect and mechanism of Suanzaoren Decoction on mice with depression
Authors: Zhang Huan , Ren Yumei , Lv Meiqi , Xie Mengting , Wang Kai , Yang Mengjie , Lv Chengqi , Li Xiaobing 
Published: April 2021

Abstract
Objective: To study the therapeutic effect and mechanism of Suanzaoren Decoction on mice with depression. Methods: A model of depression was prepared by chronic unpredictable stimulation and reserpine induction. Behavioral tests, determination of norepinephrine and dopamine were performed. Results: The behavioral indicators of the model group were reduced, and the expression of norepinephrine and dopamine was decreased. Conclusion: Suanzaoren Decoction has an effect on the increase of serum norepinephrine and dopamine content, indicating that the jujube seed Soup has a certain effect on depression.
A Comparative Study of Regional Environmental Legal Systems between China and the United States
Authors: Yuan Shengyu 
Published: April 2021

Abstract
With the spread of economic globalization and with the steady projection rate of regional economic development, an increasing amount of environmental problems have arisen as a result of these progressions. The impact of these environmental problems not only damage our society but also harmful to our physical health (Lu et al., 2015). In order to solve the increasingly severe environmental pollutions, it is necessary to study and improve the regional environmental legal systems. Because of these problems are not caused by any individual, therefore a better understanding of regional environmental legal systems established by various levels of government can further eliminate various environmental concerns and can benefit economic globalization (Wang, 2013). This paper analyzes the similarities and differences of regional environmental legal systems of China and the United States, in order to provide novel ideas to improve regional environmental laws. After evaluating the two of the most industrialized countries in the world, it is vital to absorb the merits of other countries’ legal systems and incorporate with our country’s regional environmental legal system to have a sustainable and growing economy.
Research on plant leaf classification and retrieval method based on machine learning
Authors: Zhang Ying , Tang Jianxiong , Wang Yi 
Published: April 2021

Abstract
In this article, a variety of leaf images are taken as the research objects. The images were preprocessed and the color, shape and texture features of the leaf images were extracted. Five machine learning algorithms were used to classify and retrieve the feature values of these leaf images, and the recognition effects of each algorithm was obtained.
Relationship between Fujian Economic Growth and Energy Consumption
Authors: Lin Renzao , Liu Xianchang 
Published: April 2021

Abstract
China’s economy adopts an extensive growth method. This economic growth method relies on resource input, which consumes huge energy and causes excessive pressure on resources and the environment. The economic growth rate of Fujian Province ranks among the highest in the country in recent years, and its energy consumption is still on the high side. Industrial enterprises, especially the manufacturing industry, account for the majority of energy consumption. In order to ensure the sustainable development of enterprises and society, the government needs to make plans for energy conservation and consumption reduction, policy support and enterprise energy conservation and consumption reduction measures to promote energy conservation and consumption reduction in the whole society, and strive to achieve coordinated development of economic growth and environmental protection.
Preparation of a Novel Red Y2MoSiO8: Eu3+, Dy3+ Phosphor
Authors: Yang Lulu , Jiang Guojian , Wu Dandan , Chen Hanxue 
Published: April 2021

Abstract
A novel Eu3+ ion-doped and Dy3+ ion-doped yttrium silicomolybdic (Y2MoSiO8) phosphor was prepared by traditional high temperature solid state reaction at 1200°C. The Y2MoSiO8 monodoped Eu3+ phosphors were excited at 395nm, the peak emission of red light is at 618nm and 595nm. The concentration of Eu3+ ions affects the emission intensity of the fluorescent substance. Y2MoSiO8: Eu3+, Dy3+ phosphors excited at 370 and 395nm, it can emit red light at peaks of 617nm and 611nm, respectively, widen the absorption band of Eu3+ in single doping, and improve the luminous intensity. This phosphor has the advantages of simple preparation, high luminous efficiency and easy industrialization.
Effect of Laser Cladding Process Parameters on Microstructure of Titanium-aluminum Composite Coating
Authors: Wang Qimeng , Yang Liying 
Published: April 2021

Abstract
The 3D printing powder Ti-48Al-2Cr-2Nb was selected, a mixed powder of 1%hBN and 1%TiC was added, and 21-4N steel was used as the substrate, and the above coating was prepared by laser cladding technology. Scanning electron microscope (SEM) and micro hardness tester were used to study the effect of laser power and scanning speed on the microstructure and properties of the cladding layer. The results show that the coating on the substrate is not formed when the laser power is 1000W, and the coating is burnt yellow when the power is 1300W; when the power is 1200W, the coating on the substrate is well formed and the coating quality is not defective when the scanning speed is 400mm/min.
Numerical Analysis of quenching and cooling process of Cr12MoV Die Steel under Thermo-mechanical Coupling condition
Authors: Fan Xianjin , He Wei 
Published: April 2021

Abstract
Cr12MoV die steel has the characteristics of good wear resistance, small quenching deformation, high hardenability and hardness, so it requires high heat treatment process. With the emergence of computer simulation technology, it is convenient for the evolution and calculation of quenching process. In this paper, by using the technical route of combining nonlinear surface heat transfer coefficient with finite element simulation, the thermo-mechanical coupling theory is applied to the quenching process of Cr12MoV steel, and the temperature field and stress field within 300s before quenching are studied with the help of ABAQUS finite element software. The results show that the node temperature decreases with the increase of quenching time, the lowest temperature at edges and corners is about 21°C, the heat flux vector increases with the increase of quenching time, the yield stress increases with the increase of quenching time, and the maximum corner stress is about 751MPa. The experimental results of this paper are beneficial to the evolution calculation of material quenching process and the optimization of heat treatment method.
Experimental Research on the Influence of Dry-Wet Cycle on Concrete Compressive Strength
Authors: Sun Xiao , Hua Youming , Mao Senhao , Zhang Yanyun 
Published: April 2021

Abstract
In order to study the change of compressive strength of concrete under dry and wet cycle environment, the method of 60°C constant temperature drying and liquid water immersion is used to simulate the dry and wet cycle environment of concrete, and the concrete test pieces of different ages are subjected to compression test. The test results show that with the increase of the number of dry and wet cycles, the compressive strength of concrete generally increases first and then decreases. During the dry and wet cycle, the compressive strength of concrete specimens and the number of cycles showed a significant secondary correlation, and the number of cycles in which the compressive strength of concrete specimens of different ages reached the peak was basically the same. With the increase of the age of concrete specimens, the trend of the impact of the dry and wet cycle environment is basically the same.
Study on the preparation of composite flocculant for solid-liquid separation of livestock manure
Authors: Wu Junwei , Zhong Xianjin , Liu Fei 
Published: April 2021

Abstract
Through several flocculants flocculation effect on solid-liquid compared with two kinds of good flocculation effect of flocculant FeCl3 and AlCl3, Select two better flocculant by composite flocculation test to find the best dosage, the optimum proportion and optimum dosage form for composite flocculant. Through the experiment, it can provide the effective compound flocculant flocculation for the treatment of the wastewater from the solid-liquid separation.
Research on the Mix Ratio of High Performance Concrete
Authors: Duan Yuanzhong 
Published: April 2021

Abstract
Large-volume high-strength concrete is a kind of concrete widely used at present. At present, the mainstream direction of domestic construction development is that the shape of the building is getting bigger and bigger, the number of floors is increasing, and the style of the building is getting more and more modern. Volumetric high-strength concrete is the future development trend. In the article, the author analyzes the historical background and development status of the development of large-volume high-strength concrete, introduces the current research results, and prospects the future development of large-volume high-strength concrete.
Development and application of transient electronic based on degradable materials
Authors: Wei Wei , Ren Xianghong , Du Siyan , Zhou Feng 
Published: April 2021

Abstract
Using degradable metals and metal oxides as electrodes or interconnecting wires, Si and SiO2 as semiconductor or dielectric layers, and degradable materials as base films or encapsulation protective layers, the physical form of transient electronic devices is partially damaged or completely disappeared by the corresponding degradation mode triggered by external stimuli, after performing specified functions or discarding them. This paper combs the practical needs of transient electronic in environmental protection, health care, information security, etc. and comprehensively analyzes the proposed process of transient electronic concepts. The current research status and development trend of Transient Electronics are discussed from three aspects: biocompatibility, full material degradation and controllable degradation. In the end, the article looks forward to the future development and application prospects of transient electronic.
The effect of clamping stress on the measured surface figure of optical glass BK7
Authors: Zhang Feihu , Ren Lele , Liao Defeng , Liu Ang , Wang Jian 
Published: April 2021

Abstract
This work probes the effect of clamping stress induced by pad block’s support surface (PBSS) shape error in measured surface figure of optical glass BK7. Under given PBSS topography measured by three coordinate machine, the clamping stress loaded on the workpiece and its effect on workpiece’s surface deformation was simulated by finite element method. Furthermore, the surface figure residual error (SFRE) in simulation was in good agreement with experimental results despite the measurement repeatability error.
Numerical simulation analysis of die ring spinning process
Authors: Zhao Wen Long , Wang Dong Po , Li Kai Chun , Huang Hao Ming , Zhang Yue Qian 
Published: April 2021

Abstract
Aiming at the technical challenge of spinning forming used for ultra long tubular parts, a new spinning technology based on floating die and synchronous rotation of both ends of the spinning blank was put forward. That is die ring spinning, which is divided into die ring forward spinning and die ring backward spinning. The die ring spinning utilizes to improve the stress condition of deformed metal parts and enhances the fluidity of crystal phase structure along the slip surface. It can not only eliminate the phenomenon of material bulging before spinning wheels, but also improve the straightness and reduce the ellipticity of pipes at the same time.
Selenium Passivation of the CuInSe2 for High-Efficiency Solar Cells
Authors: Guo Yu , Liu Ying , Liu Chunmei , Zhao Lili , Si Yu , Ran Jun Chao 
Published: April 2021

Abstract
In this paper, selenium passivation of the CuInSe2 for high-efficiency solar cells is studied through first-principles calculations. It is revealed that, the formation energy of Se-terminated surface and the surface with Se overlayer are different. The surface with Se overlayer are more stable, it guarantees an ideal growth that can efficiently limit the formation of point defects. It is further proved that the unique surfaces of CuInSe2 play the critical roles on the high efficiency of the based thin film solar cell. It is the significant foundation for improving the growth of related solar cells and it is very important for the formation and control of related defects in the growth of CIS. Due to the different surface energy and property, the study of the growth of Selenium passivation of CIS is very important.
Preparation of CF/PEEK and Study on Friction Performance
Authors: Gao Pengyuan , Wang Yanjun , Meng Dezhang , Zhou Xin , Liu Lei 
Published: April 2021

Abstract
Vacuum sintering technology is used to prepare PEEK composite materials. The friction and wear test of polyether ether ketone (PEEK) and its composite materials under different temperature and dry friction conditions was carried out using a ball-disk friction and wear test machine. Scanning electron microscope and white light total threedimensional profiler were used to observe the surface morphology of the material before and after wear, and compare the material surface before and after the experiment, Study the effect of carbon fibre content and temperature on the tribology properties of materials. At the same time, the wear mechanism of the material is studied.
A cost-effective method for preparing anti-corrosive and fireproof super hydrophobic coating
Authors: Li Wenbin , Wang Yong , Feng Yanting , Wang Qing , Xu Xuexia , Li Guowei , Dong Guozhen , Jing Shangqian , Chen Ersong , Fan Xiaoliang , Wang Peng 
Published: April 2021

Abstract
In this research, a cost-effective method for preparing anti-corrosive and fire proof super hydrophobic coating was presented. By simply painting the mixture of alu minium hydroxide, stearic acid, and polydimethylsiloxane, the self-similar structure w as obtained. Thus, this coating maintained super hydrophobicity after sandpaper abrasi on. Moreover, this coating could withstand the chemical and fire attack without losing super hydrophobicity.
Experimental Study on Anchoring Performance of CFRP Anchor
Authors: Li Weifeng , Zong Tian 
Published: April 2021

Abstract
Prestressing carbon fiber plate (CFRP) has been gradually used in the field of bridge reinforcement, but the anchorage of CFRP is various and the anchorage performance is different. This paper studies the anchorage performance, failure form, and tension control stress of two kinds of common anchors through experiments, which provides reference for the anchorage selection and construction guidance in the future.