bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Prediction Model of Interlayer Leakage in Separate Injection Wells in Offshore Oilfields
Authors: Gao Yonghua , Chen Jie , Liu Lei , Bao Chenyi , Liu Huawei , Li Baolong , Shi Shiying 
Published: October 2023

Abstract
In order to ensure effective layered water injection, it is of great significance to establish the functional relationship among the equivalent diameter of damage, leakage and pressure of sealing cylinder. In this paper, the experimental and numerical simulation experiments were carried out to study the relationship between gap flow rate, pressure drop and equivalent diameter of sealing cylinder under the conditions of uniform corrosion, fracture non-uniformity and random groove non-uniform distribution and scratches in different tubing, equivalent diameters and gap widths. Through a lot of data analysis, the relationship between the damage state and the leakage quantity is established and evaluated by physical simulation test. The research shows that the error between the established model function relation and the test data is no more than 10%. By simulating the damage condition of the shock sealing cylinder and quantitatively detecting the defect of the sealing cylinder, the model function relation can well predict the corresponding damage situation. Therefore, this model function can be used to solve sealing cylinder inspection problem, so as to judge the seal defect and leakage quantity which is independent of the experience of the person in charge of the site and able to use the data as a basis for judgment. This research provides a new technology for the effective prediction of the damage of sealing cylinder, and provides theoretical guidance for selecting matching sealing tools and realizing layered mining.
Particle Deposition Characteristics on Turbine Blade Surface Based on Critical Velocity Model
Authors: Zeng J W , Wang F L , Wang Y Q , Wang Y B , Shi J 
Published: October 2023

Abstract
Based on the critical velocity model of EI-Batsh, this paper further considered the particle deposition-bounce and the secondary collision deposition after the bounced, which improved the original particle deposition model. Then the particle deposition mass per unit of time and area (PDM) was proposed to characterize the particle deposition on the turbine blade surface. The effects of different rows of cooling film holes, blowing ratios, particle diameters and diameters of cooling film holes on the particle deposition characteristics of the blade surface were then investigated. The results show that the deposition amount of the single cooling film holes opening with radial inclination facing the leading edge is the smallest, and the deposition amount gradually increases when the inclination angle is shifted toward the pressure and suction surface. As the blowing ratio increases from 0.3 to 1.5, the amount of particle deposition tends to decrease and then increase, and reaches a minimum value when the blowing ratio is about 0.5. The deposition increases with increasing particle diameters in the range of 2-10 μm and gradually increases when the diameter of cooling film holes is from 0.99 mm to 1.5 mm.
Research on Calcium Chloride Weighted Polymer Fracturing Fluid for Ultra Deep and High Stress Reservoirs
Authors: Deng Shengxue , Wang Mingwei , Yang Zhanwei , Zhang Heng , Gao Yong , Nie Wancai 
Published: October 2023

Abstract
To enhance fracture and conversion effects in deep and ultra-deep oil and gas reservoirs, a low-cost polymer-weighted fracturing fluid technique was developed using industrial calcium chloride as a weighting agent and synthesizing a polyacrylamide polymer, FA-31, with a molecular weight of 4-6 million, as a thickening agent. In addition, we have developed an amphoteric metal crosslinker capable of forming multiple hydroxyl bridges with crosslinked groups, a novel XG160 high-efficiency gel breaker, and a complete set of stress corrosion inhibitors. The optimal concentration for the use of calcium chloride dihydrate is 46% and the density of aqueous solution is 1.35 g/cm3. The developed highly salt-resistant polymer dissolves rapidly in a high-density calcium chloride salt solution. The industrial calcium chloride gel formed by polymer has a maximum temperature resistance of 170 °C, a shear rate of 170 s-1 for 120 min, and a viscosity of more than 100 mPa·s. It also performs well in high-temperature suspension sand conditions. The viscosity of the gel breaker is less than 5 mPa·s. Laboratory tests have shown a core damage rate of about 20% and no stress corrosion cracking. The on-site application of liquid preparation and construction has been smooth, achieving the desired effect of reducing construction pressure. For example, when refurbishing a 7500 m reservoir, the building pressure can be reduced by 10-20 MPa. On-site testing of calcium chloride-weighted frac fluids has confirmed their effectiveness as a cost-effective alternative to conventional weighted frac fluids, providing a viable solution for the conversion of deep, ultra-deep, high-stress oil and gas reservoirs.
Optimization Study of Internal Cooling Structure of Ball Screw Sub for CNC Machine Tools
Authors: Li Shuai , Lv Guimei 
Published: October 2023

Abstract
As the core component of CNC machine tool transmission, ball screws are of great significance for CNC machine tools in terms of transmission accuracy. When the machine tool continues to work, the ball screw will inevitably generate high temperature, thus thermal expansion phenomenon, thus affecting the quality of machining products.in order to solve the problem of ball screw pair temperature rise, a screw with spiral internal cooling structure was designed, the results show that the surface temperature of the screw is not lower, but more uniform. The temperature distribution in the radial direction of the screw internal cooling structure is more balanced than that of the hollow internal cooling structure, and the overall cooling effect is more obvious.
CO2 Corrosion of X80 Steel under High Shear Flow Fields
Authors: Dou Xiaohui , Zhang Dalei , Li Yan 
Published: October 2023

Abstract
Corrosion failure accidents owing to flow erosion and pipeline corrosion frequently occur during transportation. In this study, a high wall shear stress (WSS) experimental setup was established to conduct the online electrochemical corrosion test. The corrosion behavior of welded joints in NACE solution was studied by electrochemical experimental methods such as electrochemical impedance spectroscopy (EIS) and wire harness microelectrode (WBE). The results show that different areas of the welded joint show different corrosion phenomena in NACE solution. The weld metal (WM) has the significantly better corrosion resistance, while the base metal (BM) and heat-affected zone (HAZ) have worst corrosion resistance than WM. The current of the WM surface was cathodic current, while the current of the BM and HAZ surface were anode currents.
Synthesis and Corrosion Inhibition of a New Corrosion Inhibitor in Acidic Media
Authors: Gao Yuhua , Li Haihua , Zheng Yuxuan , Zhang Lihui , Liu Zhenfa 
Published: October 2023

Abstract
A corrosion inhibitor thioaminourea-2-hydroxyphosphonylacetic (TSC-HPAA) acid was developed and synthesized for the acidic water. The effect of monomer molar ratio, reaction time and reaction temperature on corrosion inhibition performance were investigated. Comparison of corrosion inhibition performance with other corrosion inhibitors. The results showed that the synthesized corrosion inhibitor TSC-HPAA had good corrosion inhibition performance on A3 carbon steel in the acidic water, with a corrosion inhibition rate of 86.2% when the molar ratio of thiosemicarbazide and 2-hydroxyphosphonylacetic acid was 1:1, the reaction time was 9.5 hours, and the reaction temperature was 50 °C.
Cell-laden Electrospinning and Its Biomedical Applications
Authors: Xiao Zihan , Guo Zhenzhao 
Published: October 2023

Abstract
Biomedical science covers a wide area of studies that aim at the health of both humans and animals. New biomaterials and in vitro models for drug discovery and the replication of diseased tissues were developed to achieve this goal. Among the various methods employed in these fields, electrospinning stands out as one of the most widely utilized techniques. This method has garnered significant attention due to its ability to produce materials that closely resemble the fibrous extracellular matrix found in native tissues. The micro/nanofibers generated through electrospinning create a favorable environment for cellular activities, thereby promoting cell growth and function. Cell-laden electrospinning (CLE) is similar to traditional electrospinning, except that CLE would be able to encapsulate living cells in the electrospun fibers. This review mainly discussed the process parameters and the employed materials of CLE and the biomedical application of CLE. Furthermore, it delves into the various applications of CLE in biomedical engineering, with a particular focus on recent advancements in this field.
Effect of Coarse Aggregate Size on the Performance of PE/HPP Hybrid Fiber Concrete
Authors: Guo Qiang 
Published: October 2023

Abstract
Three kinds of continuously graded coarse aggregates with maximum particle sizes of 10mm, 16mm and 20mm were selected from pebble and gravel respectively, then, Slump test, compressive strength test and bending toughness test were carried out to study the influence of maximum particle size of coarse aggregate on the workability, compressive strength, wear resistance and bending behaviour of PE/HPP hybrid fiber concrete. The results show that with the increase of the maximum particle size of coarse aggregate, the work performance, compressive strength and bending toughness of hybrid fiber concrete are improved.
Preface
Authors: Ding Zhongjun 
Published: October 2023

MAEM (International Conference on Mechanical Automation and Engineering Materials) is an annually held conference for all researchers at home and abroad since 2022, aiming to provide a good platform for scholars and researchers in the field of mechanical automation, engineering materials and related areas to discuss the latest developments and achievements, work out good solutions, and make contributions.
The Second International Conference on Mechanical Automation and Engineering Materials (MAEM 2023) was held online from August 2 to 3, 2023 for academic exchanges and discussions.
There were over 30 participants from 5 different countries and regions, including China, Russia, Peru and Malaysia, attending MAEM 2023. The conference program was divided into 3 sessions: keynote speeches, oral presentations, and poster presentations. We greatly appreciate Prof. Zhongjun Ding from National Deep Sea Center, China who presided over the conference, and all participants for attending and sharing!
We are honored to invite 4 experts to give impressive keynote speeches: Professor Haibo Liu from Dalian University of Technology, China; Prof. Yajun Liu from South China University of Technology, China; Prof. Li Guo from Hunan University, China and Assoc. Prof. Elammaran Jayamani from the Swinburne University of Technology Sarawak Campus, Malaysia.
Following the keynote speakers, 3 scholars made oral presentations respectively. And 1 poster presentation came after it. Reporters shared their latest research findings and audiences were actively involved in discussions.
We would like to express our gratitude to the reviewers of these manuscripts, who provided their time and expertise to review papers and facilitate the smooth running of MAEM. We are extremely grateful to the organizers, technical program committee, and editors and extend our most sincere thanks to all the authors for their excellent contribution and work and to participants for their active attendance. Our sincere thanks also go to the IOP Publishing editors and managers for their helpful cooperation during the preparation of the proceedings.
On behalf of the Organizing Committee of MAEM 2023.
List of Technical Program Committee is available in this Pdf.
Device fault diagnosis method based on digital twin server
Authors: Liu Jizhi , Xin Yunwei , Hou Yongkang , Xu Zhonghao , Ma Xiuling , Zhao Lina 
Published: October 2023

Abstract
The digital twin is a virtual replica of a physical system that can be used to simulate and analyze its behavior. In fault diagnosis, digital twin technology is used to create a virtual model of an industrial system, and simulate different scenarios to identify the causes of the fault, and predict the system behavior under different conditions. We propose an equipment fault diagnosis method based on digital twin server. Digital twin server is the intermediary between digital model and real device data interaction. Firstly, the principle and function of digital twin and digital twin server are introduced. Then the method of using digital twin server in equipment fault diagnosis is described. Finally, taking the fault diagnosis of underwater propeller as an example, the validity of the fault diagnosis method based on digital twin server is tested. The digital twin fault diagnosis system of underwater propeller connects the digital model and the real sensing equipment, realizes the fusion of virtual and reality, and the accuracy of the resolution of the short-circuit fault between turns of the stator winding of underwater propeller can reach 85%.
Research on movement law of the deployment process for submerged mooring system
Authors: Xiao Qianjin , Liu Min , Qian Jiachang , Wei Wei 
Published: October 2023

Abstract
Safe deployment is the premise of submerged mooring system before it is put into use. In this paper, on the basis of analyzing the deployment process of the full ocean depth submerged mooring system, a calculation model of the laying process is established, and the influence law of the laying movement of the submerged mooring system, under two working conditions of deployment in the deep sea and deployment in the shallow sea, is analyzed and studied. The relevant results have certain guiding significance for the design and engineering application of the submerged mooring system.
Finite-time control based on RBF neural network for quadrotor UAVs with varied mass load
Authors: Duan Jie , Zhou Chun-Gui , Zhao Li-Chen , Jia Yi-Yue , Liu Zhi-Xi 
Published: October 2023

Abstract
Aiming at the problem of the gradual reduction of the weight and the external wind disturbance affect flight performance of the quadrotor Unmanned Aerial Vehicle (UAV), a dual-loop finite time control strategy based on Radial Basis Function (RBF) neural network is proposed. The UAV model under disturbance is decoupled into position outer loop subsystem and attitude inner loop subsystem. In the outer loop, the changing weight and the external wind disturbance are approximated by using RBF neural network, command filter is used to avoid the “computing explosion” problem in the traditional backstepping method, and the finite-time control method is able to improve the convergence speed of the position. In the inner loop, the cascade RBF neural network PID control which relies on the self-learning of neural network to realize the dynamic tuning of PID parameters is adopted to achieve rapid convergence of the attitude angle. The simulation results show that compared with the traditional backstepping method and cascade PID control, the convergence time is reduced by 31% on average, which verifies the superiority and effectiveness of the proposed control strategy.
Numerical simulation of reactive composite jet penetrating concrete target
Authors: Liang He Liang , Yin Jian Ping , Ya Yi Jian 
Published: October 2023

Abstract
In order to allow more reactive material to enter the penetration hole when the initiation delay time of reactive material arrives, a double-layered liner structure with inner and outer liners of unequal height is designed. The outer liner is polytetrafluoroethylene/aluminum (PTFE/AL) reactive material, and the inner liner is metal material. The AUTODYN software were used to study the effects of height ratio α of the inner and outer liners and inner liner material on the reactive composite jet forming and penetrating C35 concrete target. The results show that when α varies, the composite liner forms a reactive composite jet composed of different materials at the head. When α is 4/5, the composite jet can both cause a large penetration depth on the target plate and allow more reactive material to enter the penetration hole. When the material of inner liner is titanium, almost all the reactive material follows the metal precursor penetrator into the penetration hole, which can significantly exert the combined damage effect of penetration and demolition.
Research on dynamic response and deformation evolution of a rectangular recycled aggregate concrete-filled steel tubular column under small-equivalent loads and weak disturbances
Authors: Wan Sheng , Peng Sheng , Yao Yin-kang , He Li , Cai Lu-Jun 
Published: October 2023

Abstract
To study the dynamic response and deformation evolution of the rectangular recycled aggregate concrete-filled steel tubular (RRACFST) column under small-equivalent loads and weak disturbances, the measuring methods of blasting and the arrangement of measuring points were precisely handled. Three contact explosion tests were conducted on the RRACFST column to obtain their failure modes, dynamic strains, and accelerations. The research results indicate that the range of 20-30g TNT equivalent represents the starting point and critical point of plastic deformation for the RRACFST column. When the explosive quantity increases incrementally under small-equivalent loads and weak disturbances, the radius and size of the explosion crater do not exhibit a linear relationship. The methods of explosive treatment under small-equivalent loads and weak disturbances adhere to the core principles of precision and quantification, meeting engineering requirements. This study provided a theoretical basis and experimental basis for the safety study of RRACFST columns structure under explosion load.
High-tolerance nickel metalized glass gas electron multiplier: development and performance evaluation
Authors: Fujiwara T. , Shimodan C. , A. Majewski P. , Brunbauer F. , Mitsuya Y. , Takahashi H. , Kimura H. , Sato Y. , Harano H. , Tanaka M. 
Published: October 2023

Abstract
Micro-patterned gas detectors (MPGDs) are an important type
of gaseous detector that can amplify and detect a small amount of
electric charge generated by the interaction between radiation and
gas. These detectors have high gain and high spatial resolution,
making them useful in various applications ranging from high energy
physics to medical instrumentation. However, one of the most widely
used MPGDs, Gaseous Electron Multipliers (GEMs), may often
experiences electrical discharges due to excessive electric field in
the small space, which reduces their durability. To address this
issue, we previously have developed a new type of GEM that uses
glass as the insulator instead of conventional materials. Our glass
GEM demonstrated excellent gas gain and energy resolution
characteristics. In this work, we used nickel as the electrode,
which has a higher melting point than copper and showed higher
durability against arc discharges. Moreover, the nickel glass GEM
performed comparably to conventional Cu-based glass GEMs in
evaluation using radiation isotopes. Our findings suggest that our
new glass GEM with nickel electrodes is a promising solution to the
durability problem of conventional GEMs. This could lead to
improvements in the performance and longevity of MPGDs, which could
have significant implications for various applications in the fields
of physics, engineering, and medicine.
The effects of dietary changes in Europe on greenhouse gas emissions and agricultural incomes in Ireland and Denmark
Authors: Geibel Inna , Freund Florian 
Published: October 2023

Abstract
Livestock farming is one of the main sources of greenhouse gas emissions. In Europe, the agricultural sectors of Ireland and Denmark are the most livestock-intensive. Based on a scenario analysis using a computable general equilibrium model, we estimate the effects of dietary changes toward the recommendations of the EAT-Lancet Commission in Europe on the agricultural sector of Ireland and Denmark. Our results show that full adoption of the diet reduces agricultural emissions, particularly methane, with potential emission savings of 26.4% or 5.4 Mt CO2-equivalent in Ireland and 21.7%, or 1.9 Mt CO2-equivalent in Denmark. Global agricultural emissions decrease by 2.4% or 193.7 Mt CO2-equivalent. However, incomes in livestock farming fall. This is offset to varying degrees by gains in horticulture and trade dynamics, leading to different outcomes across regions. Policymakers should promote plant-based diets and monitor export dynamics to achieve effective emission reductions. Additionally, methane mitigation strategies should be integrated into climate plans. This study highlights the need for further research on country-specific environmental impacts and trade-offs associated with dietary changes.
A feasibility study on exhaled breath analysis using UV spectroscopy to detect COVID-19
Authors: Sutaria Saurin R , Morris James D , Xie Zhenzhen , Cooke Elizabeth A , Silvers Shavonne M , Long Grace A , Balcom Dawn , Marimuthu Subathra , Parrish Leslie W , Aliesky Holly , Arnold Forest W , Huang Jiapeng , Fu Xiao-An , Nantz Michael H 
Published: October 2023

Abstract
A 23-subject feasibility study is reported to assess how UV absorbance measurements on exhaled breath samples collected from silicon microreactors can be used to detect COVID-19. The silicon microreactor technology chemoselectively preconcentrates exhaled carbonyl volatile organic compounds and subsequent methanol elution provides samples for analysis. The underlying scientific rationale that viral infection will induce an increase in exhaled carbonyls appears to be supported by the results of the feasibility study. The data indicate statistically significant differences in measured UV absorbance values between healthy and symptomatic COVID-19 positive subjects in the wavelength range from 235 nm to 305 nm. Factors such as subject age were noted as potential confounding variables.
Paper test strip for fluorescence detection of iron ion based on nitrogen, zinc and copper codoped carbon dots
Authors: Yang Dou , Jiang Shuhan , Zhang Shuai , Fan Xiaoyu , Shao Xiaodong , Wang Shuhao , Li Rui , Yue Qiaoli 
Published: October 2023

Abstract
In this study, a test strip for fluorometric analysis of iron ion (Fe3+) was constructed based on nitrogen, zinc and copper codoped carbon dots (NZC-CDs) as fluorescence probes. NZC-CDs were synthesized by hydrothermal method. The morphology, size, components, crystal state and optical properties of NZC-CDs were characterized by transmission electron microscope (TEM), Fourier-transform infrared (FT-IR), x-ray photoelectron spectroscopy (XPS), x-ray diffraction (XRD), UV–vis absorption and fluorescence spectroscopy techniques, respectively. NZC-CDs exhibited bright blue fluorescence under UV lamp with a quantum yield at 17.76%. The fluorescence of NZC-CDs was quenched by Fe3+ possibly due to the static quenching. The possible fluorescence quenching mechanism was also discussed. The quenching fluorescence was linear with the concentration of Fe3+ in the range of 2.5–400 μM with a low detection limit of 0.5 μM. For the convenient detection, the test strips based on filter paper were employed for Fe3+ assay. Moreover, the present approach was successfully applied in the determination of Fe3+ in real samples including black fungus, duck blood and pork liver. The sensing method had the potential application in more food analysis.