bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on the influence of heat release from cement hydration on the mechanical properties of casing
Authors: Li Xu , Tian Ming , Shen Biao , Yang Chuan , Huang Qian , Koxmak Sayyara 
Published: March 2024

Abstract
In order to study the influence of cement hydration heat release on the mechanical properties of casing, this paper calculates the wellbore temperature and pressure field based on the mathematical model of steady-state heat conduction of casing-cement ring-formation rock, establishes a mathematical model for the mechanical evaluation of cement hydration heat release and casing interaction, and performs finite element calculation and experimental simulation of the effect of cement hydration heat release on casing loss, and the results show that the results show: Along the axial direction of the wellbore, the maximum stress on the entire cement ring occurs in the lower position of the cement ring, and the maximum deformation on the casing occurs in the middle position. The axial stress variation range of the middle part of the casing is 50MPa, and the strain is 0.12%; The axial stress variation range of the outer ring is 235MPa, and the strain is 0.09%; The circumferential stress of the middle part varies from 500MPa to 0.255%. It is found that the stress and strain in the middle part of cement sheath are large, and yield is prone to occur. Under the action of cement hydration heat release, the long-axis elliptical deformation of (7.15∼31.8) mm occurs in the casing, that is, a large ovality is produced, which weakens the collapse strength of the casing. Two repeated tests showed that under the cement hydration heat release condition at the casing loss position, the temperature change of 60°C caused the increase of axial force of casing column and the increase of annular air pressure, which caused the non-uniform deformation of casing under the composite load of external extrusion and compression axial force.
Numerical Simulation of wind load on Inflated Membrane Structure
Authors: Li Weiqun , Shi Xiaojun , Xu Yangfan , Zhang Changrong , Li Yang , Yang Wenchao , Zheng Yitong , Peng Jianjun 
Published: March 2024

Abstract
The fluid-structure interaction (FSI) program were used to simulate the condition that inflated membrane structure transport process in incoming flow. A comparison between the results from numerical simulation and from the ground simulation test was used to validate the computational method. Due to the analysis of flow field and membrane structure’s deformation, the law of force variation of inflated membrane structure during FSI was discussed, and the causes of deformation instability in FSI problems were preliminary discussed. Possible ways to reduce the sensitivity of envelope deformation caused by constraint position were explored, and the effect of this improved method on the surface stress of the envelope was investigated.
Tunnel environment noise suppression by SVD-DSW method
Authors: Yue Yonggao , Zeng Jing , Wu Zhiyuan , Zhang Shang , Deng Lijuan 
Published: March 2024

Abstract
There is strong random noise in seismic records of tunnel seismic advance detection, which makes it difficult to obtain the underground lithology information in front of tunnel face accurately. Aiming at the problem that random noise is difficult to suppress in tunnel environment, a method of SVD-DSW is proposed in our research. Different from the directional seismic wave method, the proposed method is to stack the target signal after leveling. Then, the target signal with stronger coherence is extracted by singular value decomposition and target signal reconstruction, and finally reverse correct the extracted coherent signal to get the target signal. Simulation results and field data analysis show that the SVD-ICA theoretical approach is feasible for improving the SNR of the target signal in three-component seismogram, which is of great significance to increase detection range and resolution of tunnel seismic advance prediction.
The study of thermoelectric energy and mechanical properties by modifying carbon fiber fabric
Authors: Chen Qianyu 
Published: March 2024

Abstract
With the acceleration of global industrialisation, the scarcity and depletion of the world’s energy resources has become a problem that no country can ignore. It is a serious obstacle to the long-term stable development of society. Exploring and developing new energy sources has become the trend of global energy development. In this paper, hydrogen peroxide is used to treat carbon fibre materials. In addition, the thermoelectric reinforcing agent Bi2Te3 is doped into carbon fibre film materials by electrochemical deposition for the purpose of measuring the Seebeck coefficient and electrical conductivity. Technical abbreviations will be explained at the first use. By investigating how changes in the surface structure of carbon fibre fabrics and the addition of bismuth telluride affect their thermoelectric properties, this study establishes a framework for improving the thermoelectric capabilities of carbon fibre fabrics. Experimental results show that carbon fiber fabric treated with H2O2 have excellent thermoelectric and mechanical properties.
Vector Control Simulation of Permanent Magnet Synchronous Linear Motor
Authors: Dai Chunming , Wang Mian , Zhao Fenggang 
Published: March 2024

Abstract
Compared with rotating motor, linear motor can “directly” obtain linear motion, which eliminates the intermediate transformation link and can directly drive the equipment requiring linear motion. It is applicable to rotating motor mature control strategy can be better for linear motor control research. Its development and application of linear motor has great significance. In this thesis, starting from the weakening characteristics of permanent magnet synchronous linear motor, through the MATLAB simulation and comparative analysis of different control signals (SPWM and SVPWM) of vector control strategy, the conclusion that vector control strategy can effectively control ideal linear motor is obtained, which lays a foundation for further improving the control strategy to control non-ideal linear motor.
Study on the Selection of Power Cable Rejuvenation Fluids Based on Relative Diffusion Coefficients
Authors: Tao Xiantao , Deng Kai , Zhang Fei , Ren Ang , Su Fei , Liu Xiao , Gong Hui , Qin Zihang , Chu Fanwu 
Published: March 2024

Abstract
The present work presents and formulates a method for calculating the relative diffusion coefficient of rejuvenation fluid in injection cable rejuvenation technology, and the permeability characteristics of rejuvenation fluid in polyethylene insulation materials are calculated and compared. The main components of the rejuvenation fluid such as (Phenylmethyl-dimethoxysilane) PMDMS, (Diphenyldimethoxysilane) DPDMS and (Trimethylmethoxysilane) TMMS, and the catalysts such as (Tetra-isopropyl titanate) TIPT and (Tetra-isobutyl titanate) TIBT were analysed in depth. The article uses theoretical calculation method, combined with Helmroth and Limm-Hollifield models, to calculate the diffusion coefficients and relative diffusion coefficients of these compounds in polyethylene. Through comparative analysis of theoretical calculations, the optimal parameters for evaluating the permeability characteristics of rejuvenation fluids were determined. The research results show that TMMS has the best permeability characteristics in polyethylene, followed by PMDMS and DPDMS. In the catalyst, TIPT has better permeability characteristics than TIBT. And when selecting the composite formula for cable rejuvenation fluid, it is more convenient to use the relative diffusion coefficient as an index of diffusion characteristics. This research provides important theoretical basis and practical guidance for the formulation selection of cable rejuvenation fluids.
Comparative Study on the Ampacity of 500 kV Single-Core and Three-Core Submarine Cable
Authors: Tao Xiantao , Liu Hao , Wang Lei , Zhai Haoqi , Ni Yulin , Hou Junping , Zhang Shize , Luo Zhengjun , Chen Nan , Ye Gang 
Published: March 2024

Abstract
Submarine cable is an important equipment for data communication and power transmission in power systems, which has a complex laying environment. According to its structure, submarine cables can be divided into two types, single-core cables and three-core cables. In practical engineering, cable selection is crucial to ensure the safe and stable operation of the cable and reduce the cost. The present work compares the ampacity of 500 kV single-core cable and three-core cable with the same conductor cross-section area under certain laying conditions. And the temperature rise situation of the three-core cable and the single-core cable is compared under the application of the same current. The results reveals that the ampacity of the three-core cable is less than one-core cable under certain laying situations. And the maximum ampacity reduction of the three-core cable is 28.96%. Furthermore, the highest temperature rise point of the three-core cable is the air section of the J-tube, and the maximum temperature reaches 130.07°C.
Analysis of Calculation of Artificial Neutral Point Resistance for Open-circuit Testing
Authors: Fang Xiang 
Published: March 2024

Abstract
This article focuses on the artificial neutral point device with ZN connection (ZN type connection refers to the way that the primary winding adopts a zigzag connection and the neutral point is led out). In the process of breaking test, the arc energy is an important criterion. For three-phase four-wire transformers, the test loop can be built by connecting the N-pole with a pure resistance. However, for three-phase transformers, the loop needs to be built through the artificial neutral point. By analyzing the calculation and actual test data, the calculation method for the artificial neutral point resistance used in the experiment is clarified. It is confirmed that the resistance of the artificial neutral point will not change with the change of input voltage, making the calculation of expected fault current more accurate in daily use.
Research on Steel Cage Hoisting Equipment in Electric Power Construction
Authors: Qiu Haoci , Wu Fenqian , Chen Weiyu , Liu Ruijun , Wang Chao 
Published: March 2024

Abstract
In the process of electric power construction, the form of bored pile bottom foundation is widely used. However, if the method of segmental lifting of steel cage is adopted, it will bring a series of problems. First of all, the combination welding of the two main bars will become very difficult, and its welding strength is difficult to be guaranteed. Second, the welding process takes too long, which may lead to an increased risk of hole collapse. These problems will not only affect the efficiency and quality of power construction, but also threaten the safety of construction personnel. Therefore, in order to solve these problems, it is very important to improve the safety and reliability of the overall lifting process of the steel cage. This paper will introduce the research on the whole lifting of steel cage in power construction in detail, in order to provide useful reference for related projects and help the steady development of national power industry.
Multi-level Storage Characteristics of MoSe2 Resistive Random Access Memory
Authors: Dong Pengfan , Jian Jiaying , feng Hao , Geng Mingtao , Dang Bo , Gao Qian , Xu Junfeng , Zhu Man , Liu Xing 
Published: March 2024

Abstract
Resistive Random Access Memory (RRAM) is a type of non-volatile memory (NVM) device that stores information by switching between high and low resistance values. It has attracted widespread attention due to its promising potential for miniaturization. In this study, molybdenum diselenide (MoSe2) was successfully synthesized via the hydrothermal method, and the RRAM was fabricated with MoSe2 as the resistance change layer. Furthermore, the MoSe2 samples were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results demonstrate that the prepared MoSe2 forms flower-like nanospheres assembled by nanosheets, with a particle size is about 200 nm. In addition, RRAM has a low operating voltage (< 1V), a high OFF/ON-state resistance ratio (> 102), a good endurance (103 cycles), and its resistance switching mechanism is dominated by the trap-controlled space charge limited current (SCLC) mechanism in the high resistance state (HRS) and by the ohmic mechanism in the low resistance state (LRS). Furthermore, multi-level storage is achieved by adjusting the compliance currents (Icc) and the stop voltage (Vstop).
Research on Black Start Control technology of Energy Storage Power Station Based on VSG All Vanadium Flow Battery
Authors: Xie Bing , Xu Baofeng , Liu Zhili , Sun Guangyu , Yang Bin , Wang Xiaodong 
Published: March 2024

Abstract
To reduce the losses caused by large-scale power outages in the power system, a stable control technology for the black start process of a 100 megawatt all vanadium flow battery energy storage power station is proposed. Firstly, a model is constructed for the liquid flow battery energy storage power station, and in order to improve the system capacity, four unit level power stations are processed in parallel. Secondly, based on the energy storage of all vanadium flow batteries, the traditional voltage and frequency stability control technology has been improved to address the characteristics of low inertia and damping in power electronic interfaces. The improved VSG strategy has been applied to the overall control of a hundred megawatt level flow battery energy storage power station, solving the voltage and frequency instability problems caused by load shocks and fluctuations. Finally, stable control of multiple parallel machines during the self starting process of the liquid flow battery energy storage power station was achieved, avoiding the occurrence of multiple machine circulation and uneven power distribution problems during the self starting process.
Performance Simulation Analysis of Synchronous Hydraulic System for Variable-Diameter Threshing Drum
Authors: San Yunlong , Yang Huimin , Chen Yifei , Wang Xuenong , Niu Changhe , Liu Yanbin 
Published: March 2024

Abstract
To meet the requirement that the traditional combine harvester can adjust the threshing gap in real time according to different working conditions, a hydraulic driven variable-diameter threshing drum and a synchronous hydraulic system were developed in the early stage. However, the performance of synchronous hydraulic system has not been studied in detail. Therefore, AMESim software was used to simulate and analyze the synchronous hydraulic system to verify its feasibility in this study. The results showed that the synchronization error of synchronous hydraulic system was less than 0.02 mm. When the hydraulic system was self-locking, the position fluctuation of the piston rod of hydraulic cylinder was less than 0.06 mm. When the hydraulic cylinder did not work, the logic valve effectively ensured that the hydraulic oil could directly return to the oil tank, resulting in the minimum energy loss of the system. The flow control valve could regulate the flow rate of the hydraulic system, causing the adjusting speed of the drum diameter can be adjusted. The hydraulic system pressure was determined to be 8 Mpa.
Failure Analysis of Header Flange Cracking in Propane Dehydrogenation Unit
Authors: Lu Xianjin , Yu Ting , Chen Yanbin , Chen Mao , An Zhicong 
Published: March 2024

Abstract
The boiler fault of propane dehydrogenation unit is investigated by macroscopic inspections, mechanical properties testing, chemical composition analysis, metallographic microstructure, X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The experiments confirm the reason for cracks occurrence of SA182-F347H boiler that the stress corrosion cracking occurs. The sulfur injected into the device reacts with the flange metal to produce sulfide corrosion products. The improper control of flange manufacturing process and the operating temperature in the sensitized range lead to the sensitization of flange materials and reduce the corrosion resistance. During the equipment shutdown, the sulfide corrosion products on the surface of the flange reacted with air and water to form polysulfuric acid, and causing stress corrosion cracking and leakage of the sensitized F347H stainless steel flange.
RFSoC-based front-end electronics for pulse detection
Authors: Axani S.N. , Futagi S. , Garcia M. , Grant C. , Hosokawa K. , Ieki S. , Inoue K. , Ishidoshiro K. , Kawada N. , Matsumoto Y. , Nakahata T. , Nakamura K. , Shouji R. , Song H. , Winslow L.A. 
Published: March 2024

Abstract
Radiation measurement relies on pulse detection, which can
be performed using various configurations of high-speed
analog-to-digital converters (ADCs) and field-programmable gate
arrays (FPGAs). For optimal power consumption, design simplicity,
system flexibility, and the availability of DSP slices, we consider
the Radio Frequency System-on-Chip (RFSoC) to be a more suitable
option than traditional setups. To this end, we have developed
custom RFSoC-based electronics and verified its feasibility. The
ADCs on RFSoC exhibit a flat frequency response of 1–125 MHz. The
root-mean-square (RMS) noise level is 2.1 ADC without any digital
signal processing. The digital signal processing improves the RMS
noise level to 0.8 ADC (input equivalent
40 μVrms). Baseline correction via digital
signal processing can effectively prevent photomultiplier overshoot
after a large pulse. Crosstalk between all channels is less than
-55 dB. The measured data transfer speed can support up to
32 kHz trigger rates (corresponding to 750 Mbps). Overall, our
RFSoC-based electronics are highly suitable for pulse detection, and
after some modifications, they will be employed in the Kamioka
Liquid Scintillator Anti-Neutrino Detector (KamLAND).
Measuring cell proliferation in bioprinting research
Authors: Schweinitzer Sophie , Kadousaraei Masoumeh Jahani , Aydin Mehmet Serhat , Mustafa Kamal , Rashad Ahmad 
Published: March 2024

Abstract
Tissue-like constructs, intended for application in tissue engineering and regenerative medicine, can be produced by three-dimensional (3D) bioprinting of cells in hydrogels. It is essential that the viability and proliferation of the encapsulated cells can be reliably determined. Methods currently used to evaluate cell proliferation, such as quantification of DNA and measurement of metabolic activity, have been developed for application in 2D cultures and might not be suitable for bioinks. In this study, human fibroblasts were either cast or printed in gelatin methacryloyl (GelMA) or sodium alginate hydrogels and cell proliferation was assessed by AlamarBlue, PicoGreen and visual cell counts. Comparison of data extrapolated from standard curves generated from 2D cultures and 3D hydrogels showed potential inaccuracies. Moreover, there were pronounced discrepancies in cell numbers obtained from these assays; the different bioinks strongly influenced the outcomes. Overall, the results indicate that more than one method should be applied for better assessment of cell proliferation in bioinks.
Adipose tissue reconstruction facilitated with low immunogenicity decellularized adipose tissue scaffolds
Authors: Yang Xun , Jin Lijuan , Xu Miaomiao , Liu Xiao , Tan Zhikai , Liu Lijun 
Published: March 2024

Abstract
There is currently an urgent need to develop engineered scaffolds to support new adipose tissue formation and facilitate long-term maintenance of function and defect repair to further generate prospective bioactive filler materials capable of fulfilling surgical needs. Herein, adipose regeneration methods were optimized and decellularized adipose tissue (DAT) scaffolds with good biocompatibility were fabricated. Adipose-like tissues were reconstructed using the DAT and 3T3-L1 preadipocytes, which have certain differentiation potential, and the regenerative effects of the engineered adipose tissues in vitro and in vivo were explored. The method improved the efficiency of adipose removal from tissues, and significantly shortened the time for degreasing. Thus, the DAT not only provided a suitable space for cell growth but also promoted the proliferation, migration, and differentiation of preadipocytes within it. Following implantation of the constructed adipose tissues in vivo, the DAT showed gradual degradation and integration with surrounding tissues, accompanied by the generation of new adipose tissue analogs. Overall, the combination of adipose-derived extracellular matrix and preadipocytes for adipose tissue reconstruction will be of benefit in the artificial construction of biomimetic implant structures for adipose tissue reconstruction, providing a practical guideline for the initial integration of adipose tissue engineering into clinical medicine.
Large multi-decade beaver ponding changes in the subarctic Hudson Bay Lowlands, Canada observed using satellite remote sensing
Authors: Fraser Robert H , Olthof Ian , Berezanski Dean 
Published: March 2024

Abstract
Beavers strongly impact hydrology and ecosystems through their widespread dam building that creates ponds and wetlands. Monitoring the relative abundance of beavers and their waterbodies is needed to assess these effects and factors influencing population levels. However, the ability to do this over vast, remote regions is limited with conventional aerial or field-based surveying. To address this challenge, we developed a satellite remote sensing method to track beaver ponding changes over multiple decades and applied it to a 5127 km2 region of the coastal Hudson Bay Lowlands in Manitoba, Canada. Annual, sub-pixel surface water mapping using 30 m resolution Landsat satellite data, combined with a spatial database of beaver dams, permitted the mapping of 37 year (1985–2021) beaver ponding dynamics. We identified 1714 beaver dams and 1085 beaver pond complexes covering 31 km2, indicating that beavers have an important influence on stream hydrology in this high subarctic landscape. The total area of ponding decreased by 53% from 1986–1989 and by 80% by 1995, and then gradually recovered to initial levels by 2015. The early, steep drop in beaver ponding corresponded to a 13% decline in regional surface water area, while a similar wetness decline during 2015–2018 resulted in little change in beaver ponding. We suggest that strong beaver ponding dynamics were likely caused by the interaction between streamflow levels and beaver populations living near their northern range limit and cold tolerance. The pond mapping method can be applied to other regions if the long-term distribution of beaver dams is known, and ponds are large enough to be identified using a Landsat sub-pixel approach.