bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of Trough Excavation Study on Deformation of Deep Foundation Pit Support Structure in Water-rich Area
Authors: Li Leiming , Yang Chunying , Guo Xiaohong , Yao Zaifeng , Liu Da 
Published: December 2019

Abstract
Based on finite element numerical calculation, calculation results of first support, trough excavation and over-excavation working conditions were compared in this paper. Analysis of deformation difference of retaining structure in water-rich and thick sand stratum was provided. Calculation results were compared with actual monitoring data, in order to explore the influence law of trough excavation on the horizontal deformation of retaining structure. The results show that the trough over-excavation soil exacerbates the lateral deformation of underground diaphragm wall, the cumulative maximum is 9.28mm and the process maximum is 10.45mm, 34.93% of the maximum underground diaphragm wall deformation. Conclusion of back pressure soil restrains the deformation of underground diaphragm wall can also be drawn, the process maximum is 6.44mm, 21.52% of the maximum underground diaphragm wall deformation. The design of the deep foundation pit retaining structure should be checked as far as possible according to the actual working conditions to reduce the engineering risk, ensuring that the design is economical, reliable and reasonable.
Analysis of Kinetic Characteristics of Merey Crude oil Pyrolysis by Isoconversion Method
Authors: Zhang Meng , Zhang Xiao , Li Jintao 
Published: December 2019

Abstract
As an important chemical reaction during in-situ combustion, pyrolysis reaction is related to the whole combustion process. To understand the kinetic characteristics of the pyrolysis reaction more clearly, three models, FWO, Friedman and KAS, were used to fit and calculate the thermogravimetric data of Merey crude oil by three linear heating rates under air atmosphere and analyze the kinetic parameters of crude oil at different conversions. The results show that KAS model provides the fitting result similar to the FWO model, but Friedman model provides smaller result, and the FWO model provides the highest linear correlation and the most accurate calculation results among the three models; the gasification stage has the lowest activation energy, followed by low temperature oxidation stage, the pyrolysis stage has the highest activation energy and the highest energy consumption and is the core reaction in the whole process, and the high temperature oxidation stage has a bit lower activation energy than the pyrolysis stage among the four stages of thermal reaction of Merey crude oil.
Research and application on wellbore integrity technology for Integration of Oil Recovery, Well Completion and Drilling
Authors: Bai Xuemin , Yang Song , Yuan Xizhi , Xie Jiang , Li Weijie 
Published: December 2019

Abstract
Huabei oilfield has entered the middle and late periods of the development, and a series of problems such as casing damage, casing deformation, restricted measures and eccentric wear of staff and tube are gradually exposed in the development process[1,2], which affect the development benefit of oilfield, and the wellbore integrity is closely related to the development benefit. Therefore, in order to ensure the qualified wellbore conditions, huabei oilfield put forward the design concept of “Integration of Oil Recovery, Well Completion and Drilling”, the engineering design system of multi-professional coordinated and unified “Integration of Oil Recovery, Well Completion and Drilling” are constructed, the optimization design of drilling trajectory, casing and frac fluid system was carried out. The application shows that the design prolonged the life cycle of oilwell effectively, which of great significance for single well productivity improvement and benefit development.
Flocculation and sedimentation characteristic of coal slurry in coal preparation plant
Authors: Li Lingyue , Zhou Shenglun , Chen Feng , Qu Jiangjiang , Liu Chuan , Cheng Sibo 
Published: December 2019

Abstract
Flocculation sedimentation test was carried out on the coal slurry of the selected coal preparation plant. A mathematical correlation model of initial settling velocity, upper clarification turbidity and sediment volume with various influencing factors was established. The results show that: the initial settling velocity increases first and then decreases with the increase of flocculant concentration; when the flocculant concentration is 10g/m3, the initial settling velocity is the largest; the initial settling velocity increases with the increase of the mass ratio of coagulant and flocculant. The upper clarification turbidity decreases first and then increases with the increase of the flocculant concentration; when the flocculant concentration is 10g/m3, the supernatant has the lowest turbidity; the upper clarification turbidity decreases with the increase of the mass ratio of coagulant and flocculant. The volume of sediment increases with the increase of flocculant concentration, and increases with the increase of mass ratio of coagulant and flocculant.
Analysis of Industrial Metabolic Flux in Blast Furnace Ironmaking System
Authors: Xie Minchao , Zhao Gang , Chen Junwen , Cao Kunlun 
Published: December 2019

Abstract
Based on the method of industrial metabolic analysis, the methods is given in this paper. Taking the blast furnace ironmaking process of an iron and steel enterprise as an example, the material metabolic analysis of blast furnace ironmaking process is carried out. By using the calculation method of metabolic flux, the regulation model of industrial metabolic flux based on the principle of flux balance is constructed, and the material metabolic communication in the process of blast furnace ironmaking is carried out and quantity prediction. On this basis, the control method of material flux in blast furnace ironmaking process is put forward, which can provide energy saving and emission reduction measures for enterprises.
Research on rapid semi-quantitative determination of iron in pyrotechnics uesd for fireworks and firecrackers
Authors: Jun-yi Wu 
Published: December 2019

Abstract
This study discloses a method for rapid semi-quantitative determination of iron in pyrotechnic powder for fireworks and firecrackers based on energy dispersive X-ray fluorescence spectrometer (EDXRF), including the following steps: preparation of samples, establishment of testing methods, determination of the characteristic line fluorescence intensity values of Fe element in samples, and according to the measured fluorescence intensity values, the iron content in the pyrotechnic powder samples can be semi-quantitatively determined. The method of the study has the advantages that: (1) the method is simple to operate, and the method can be repeatedly called for testing. Only one new test method needs to be built before the sample test. After the method is established, the test can be repeated at different times without re-establishing the test method for each test. After the first establishment of the new test method, the entire test process only includes three steps: sample preparation, sample loading into the sample cup and on-board testing. (2) The detection period is extremely short. After the sample is prepared, the entire measurement process takes only about 2 minutes. (3) Labor intensity is very low and the requirements for operators are not high. (4) The method has good stability, good repeatability and high credibility.
Understanding the inconsistency between mechanism and rate constants of acetylene ozonolysis
Authors: Wang Dongtong , Zelin Wang , Zhang Shaowen 
Published: December 2019

Abstract
The reaction mechanism of acetylene with ozone was studied by using the complete active space self-consistent-field (CASSCF) and the CASPT2 methods. It was confirmed that the reaction follows the Criegee mechanism, yet a van de Waals complex was introduced in the mechanism. We found the master equation method is the key factor to accurately calculate the rate constants and Arrhenius parameters of this reaction, comparing to the results calculated by the traditional transition state method with steady-state assumption by Cremer which are about an order of magnitude smaller than the experimental data.
Research on clean energy complementary power generation and optimal operation in Yalong river basin
Authors: Zhang Xinshuo , Huang Weibin , Wang Feng , Chen Shijun , Guangwen MA 
Published: December 2019

Abstract
Based on the general situation and development status of Yalong river clean energy demonstration base, the typical wind power stations, PV power stations and hydropower stations in the downstream of Yalong river are selected for research. Firstly, the principle of wind power, photovoltaic power and hydropower complementarity was analyzed, and the complementary characteristics of this three kinds of power sources in a daily time scale were explored. Secondly, in order to maximize the consumption of clean energy, ensure the operation safety of the grid and protect the cascade hydropower benefits, a mathematical model was built with the objective of the minimum load tracking difference index and the minimum total amount of water abandoned in the dispatching period, which was solved by two-layer nested optimization solution. The results show that the cascade hydropower of Yalong river has the ability to regulate the fluctuation of wind power output in the basin. The three kinds of power supply bundled out can provide stable and high quality electricity for the grid. The last, a new strategy for cascade hydropower operation after complementation was proposed, which can promote the realization of low carbon power dispatching and the optimization of energy structure.
The marketization process of electricity purchase and power generation and its significance in China
Authors: Tang Chenghui , Zhang Fan 
Published: December 2019

Abstract
China’s electricity purchases and power generation have been subject to deterministic catalogue tariffs for a long time. With the continuous improvement of China’s electricity market reform, more and more parts of electricity purchase and power generation use market-based methods to determine electricity prices. This paper reviews the marketization process in China’s electricity purchase and power generation. In view of whether or not to participate in the electricity market, this paper classifies different types of electricity purchase and power generation in China. Finally, it summarizes the significance of China’s electricity purchase and power generation marketization.
Two Networking Algorithms Based on LoRa Communication Used for Private Network Construction in Energy Acquisition System
Authors: Yan Xu , Xuefeng Zhai , Weilian Shui , Jian Wang , Zhongxiao He 
Published: December 2019

Abstract
With the continuous improvement of acquisition quality, service quality, maintenance cost of energy acquisition system, downlink communication still lacks systematic solutions to the complex, changeable, new and weak planning application scenarios of underground garage charging pile, coal-to-electricity conversion, etc. This paper proposed two networking algorithms, BRN and MCN, based on LoRa communication used to construct the private network in energy acquisition system. With the long-distance characteristics of LoRa technology, a larger private network can be built quickly.
Chemical Analysis of High Moisture Content of Flue Gas Desulfurization Gypsum
Authors: Li Yin , Yuehua Feng , Yanyan Wang , Linhao Li 
Published: December 2019

Abstract
In order to solve the problem of high moisture content of flue gas desulfurization gypsum in coal-fired power plants, after eliminating the reasons of system equipment, chemical analysis of relevant samples was carried out by thermogravimetric analyzer, laser particle size analyzer, ICP and other instruments. Results show that the main reason for the high moisture content of desulfurization gypsum is the high magnesium content in limestone, which results in the faster nucleation rate of gypsum crystals and the difficulty of aggregation and growth of gypsum crystals. This increases the difficulty of dewatering gypsum with dewatering belt.
Degradation of antibiotics in water by salicylic acid modified carbon nitride photocatalytic material
Authors: Wang Hao 
Published: December 2019

Abstract
The misuse and abuse of antibiotics lead to water environment problems in many countries including China all over the world. There are many deficiencies in traditional ways of antibiotics degradation such as high cost, low removal efficiency, low degradation rate etc. In this paper, the modified carbon nitride was synthesized from urea and salicylic acid with thermal copolymerization. The XRD, FT-IR and TEM were used to characterize the structure and optical properties of the material. From the radical sacrificial test, the super oxide radicals were examined as the major radicals in the degradation process. The material provides a good application prospect for the photocatalyst treatment of antibiotic wastewater.
Design and Research of a Seawater Desalination Device Powered by Solar Energy and Wave Energy
Authors: Liu Yang , Chen Aiguo , Zhi Yun , Xiao Yaoyao , Zhao Yongtian , Fang Chaobin 
Published: December 2019

Abstract
A seawater desalination device powered by new energy sources is proposed against the high energy consumption in the fresh-water generating industry. The designed seawater desalination device utilizes the vacuum tube of its thermal piping to collect solar energy, uses the multi-effect distillation system to perform thermal desalination, and makes use of the Edinburgh duck to acquire mechanical energy and ultimately produces fresh water out of sea water. The safe and efficient device can provide fresh-water resources for a variety of offshore engineering.
Reliability Evaluation of Mechatronic Equipment Based on Evidence Theory
Authors: He Zhiyuan , Lv Weimin , Hu Wenlin 
Published: December 2019

Abstract
To solve the correlation problem in evidence theory, this paper proposes an evidence theory model based on Copula function and related reliability assessment methods. First, we establish a performance degradation model based on the Wiener process and calculate the PDF of the lifetime distribution. Secondly, the fuzzy C-means algorithm is used to discretize the probability density function and obtain the marginal basic reliability allocation (BPA). Finally, the fusion of multidimensional evidence variables is carried out using the improved synthesis rules based on Copula function. The example analysis shows that this method solves the evidence-related problems in traditional evidence theory, and it is more efficient than other methods in the literature.
Simulation on Penetration of Image Homing Rocket Projectiles in Steel Plate- Concrete Targets
Authors: Fang Shidong , Chen Dong , Li Yong , Wu Pan , Jiang Bin’an 
Published: December 2019

Abstract
In order to study the penetration performance of image homing rocket projectile in steel plate-concrete targets, firstly, according to the characteristics of projectile and target, the material constitutive models and state equation were constructed, numerical models were built and the penetration was simulated with the software of LS-DYNA. Then, on the basis of verifying the accuracy of penetration simulation models, penetrations in two typical steel plate-concrete targets were simulated under the conditions of different slant angles. The simulation results show that the rockets can penetrate through the steel plate-concrete targets. Meanwhile, the force, velocity and penetration performance of the projectile were greatly affected by the steel plate in the process of penetration, and the impact, collapse and pit opening effect on the concrete covered by the steel plate were not obvious. In a word, the image homing rocket projectile has good penetration performance in steel plate-concrete targets, which can meet the tactical and technical requirements.
Fluid-structure coupling topology optimization based on added mass method
Authors: Wang Xudong , Ren Junpeng , Wang Deshi 
Published: December 2019

Abstract
A wet model topology optimization method based on added mass method and bidirectional evolutionary structure optimization algorithm is proposed to maximize the natural frequency of fluid-structure coupling system. The fluid-structure coupling equation of the finite element method and the sensitivity formula of the element are analyzed simultaneously, and then the coupling optimization model is established. Under the constraints of structure volume, the weighted natural frequencies of single-objective and multi-objective of the coupled system are maximized to optimize the underwater coupled structure. The numerical results show that the evolutionary methods can be applied to this kind of problem effectively and efficiently. Besides, the optimization results of cases have smooth boundaries and the numerical stability of the optimization algorithm is good. Under constant volume constraints, the single-order natural frequency is increased by more than 380%. The results of multi-objective weighted optimization show that the weighted coefficients are final. The larger the weighting coefficient is, the closer the topological form is to the optimal result of the model.
Flexible micro-perforated panels prepared by CNC machining
Authors: Xie Dongyue , Tang Xiaoning , Hu Ming , Kong Deyi , Qian Yujie 
Published: December 2019

Abstract
With the advantages of light weight, thin thickness and environment friendly, the micro-perforated panel (MPP) has been widely studied for noise reduction. Maa’s model pointed out that the MPP could obtain higher sound absorption over broader frequency band when the perforations were reduced to less than 100 μm. However, it is challenging to manufacture MPPs with the aperture of approximate 100 μm, thus its potential application has been restricted. In this study, we used a computer numerical control (CNC) milling machine to process MPP. Four different kinds of raw materials including paperboard, polyethylene terephthalate (PET), polyvinyl chloride (PVC), and polycarbonate (PC) were taken to prepare micro-perforated panels (MPPs). It has been indicated that MPPs with good sound absorption properties were successfully prepared by this facile method.
Research on Fatigue Life Prediction Method of Tractor Frame
Authors: Sun Liang , Yuan Zhengwen , Zhu Shumin 
Published: December 2019

Abstract
Aiming at the phenomenon of a certain type of tractor frame batch fatigue damage during the three-package period, the fatigue point and damage life of frame are predicted based on finite element method and linear fatigue damage theory in this paper. The stress at each node of the frame structure is acquired through the inertial release analysis of finite element model. The correction coefficient of the simulation model is determined by correlating the virtual strain of the frame with the measured strain. Based on the measured road load, finite element analysis results and material S-N curve, the fatigue life of the frame is calculated, and the severe fatigue damage area is obtained. The simulation results are consistent with the actual statistical results.
Analysis on Data Characteristic and Mechanism of Wind Vibration Disaster of Power Transmission Line
Authors: Peng Li , Bin Liu , Tong Li , He Liu , Yongfeng Cheng , Danyu Li , Jingchao Wang , Jialun Yang , Xiangze Fei , Kunpeng Ji , Bin Zhao 
Published: December 2019

Abstract
In this paper, characteristic identification and mechanism analysis on wind vibration disaster of power transmission line are carried out by using the data driving method. To provide technical support for prevention and control of wind vibration disaster to power transmission line, statistics are made in this from three dimensions i.e meteorology & geology, line structure and disaster characteristics to the wind vibration data of power grid conductors. Then frequency distribution characteristics of wind vibration disasters for conductors under different parameter conditions has been analyzed, and the correlation between various factors and wind vibration disasters according to analysis results has also been discussed.
Application of Discrete Fracture Network Model in the Simulation of Massive Fracturing in Tight Oil Reservoir
Authors: Ming He Chun , Zhi Shi San , Zhanghui  , Shuai Li , Jin Chen , Ning Cheng , Duanguifu  
Published: December 2019

Abstract
Massive fracturing technology can form a complex fracture network and a large drainage area by multi-stage/multi-cluster perforation and injection of low viscosity fluids such as silckwater.the traditional bi-wing planar model is not applicable in the simulation of massive fracturing, and a new network model is needed. The pseudo-three-dimension (P3D) Discrete Fracture Network (DFN) model are based on self-similar solution methodology, and the fracture characteristics are then calculated numerically. we performed a comparison between DFN model and Cluster Facture model through the integration of rock mechanics, well logging and micro seismic detection technology. After the mini-fracture analysis and closure analysis, parameters like instantaneous shut-in pressure (ISIP), closure pressure and reservoir permeability were obtained. Based on these parameters, pressure history match and SRV match were performed, the result shows that DFN model works better than the Cluster Fracture model in the matching. The research proves the feasibility of DFN model in the simulation of massive fracturing in tight oil reservoirs.
A Review on the Impacts of Building Energy Consumption with a Focus on Outdoor Thermal Environments and Residents’ Habits
Authors: Cui Haibo 
Published: December 2019

Abstract
Energy consumption is becoming a crucial economic issue and an unsolved priority problem for policymakers around the world. The demand and supply of unsustainable energy sources significantly influence family budgets and international relations. Currently, the energy consumption is becoming an increasingly important index in the building construction. This article analyzes building models under different conditions to explore factors influencing building energy consumption in outdoor thermal environments and variables attributed to different local habits.
Discussion on Parameter Value and Application of Foundation Bearing Capacity Calculation Formula in Code for Design of Building Foundation
Authors: Zheng Qiwen 
Published: December 2019

Abstract
Article 5.2 of the Code for Design of Building Foundation gives the calculation formula of foundation bearing capacity. Some parameters in the calculation formula have the same symbols in front and back references, while the meanings represented by the parameters are different, resulting in the possibility of misuse by designers in the actual application process. According to the principle of soil mechanics, this paper discusses the situation that some parameters in the calculation formula of foundation bearing capacity are easily confused, which has certain reference value for correctly understanding the application of the calculation formula of foundation bearing capacity in foundation design.
Development of Building Information Modelling in China: A Review of Policy Trends
Authors: Yang Yingnan , Zhang Yidan , Yuan Lin 
Published: December 2019

Abstract
Currently, compared with the technical support needed for adopting Building Information Modelling (BIM), the scholars didn’t pay sufficient efforts on sociology. This paper examines developments of BIM in the architecture, engineering, and construction (AEC) industry in China, with a particular focus on the policy support for government-industry linkages. The paper shows how different regions in China have responded to the policy initiatives, and suggests that there have been some movements towards regional diversity for the developments of BIM in China. However, questions remain as to the development and potential of truly regional governance structures for BIM and the role of universities.