Article
Engineering, Industrial
Y. M. Liu, Z. H. Wang, T. Wang, J. Sun, P. J. Hao, D. H. Zhang, Q. X. Huang
Summary: In this research, a symmetric cubic function model is proposed to describe the three-dimensional shape of the slab in vertical rolling. The effectiveness of the model is verified through numerical calculations and comparisons with other models and measurements. The effects of key process parameters on the slab shape and stress state are also investigated, providing guidance for process parameter setting and adjustment.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Yufeng Zhang, Meiying Zhao, Li Xu, Hongshuang Di, Xiaojuan Zhou, Peng Wen, Dewen Zhao, Dianhua Zhang
Summary: This paper presents an innovative method for optimizing the calculation of vertical rolling force, which improves prediction accuracy. By optimizing the weighted coefficient b of intermediate principal shear stress, the model accuracy can be enhanced. The impacts of reduction rate, initial thickness, and friction factor on dog-bone shape size and vertical rolling force are also discussed.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Henry De Belly, Shannon Yan, Hudson Borja da Rocha, Sacha Ichbiah, Jason P. Town, Patrick J. Zager, Dorothy C. Estrada, Kirstin Meyer, Herve Turlier, Carlos Bustamante, Orion D. Weiner
Summary: This study uses optogenetics and optical tweezers to simultaneously monitor the propagation of membrane tension in cells. It finds that actin-driven protrusions and actomyosin contractions can rapidly transmit membrane tension, while forces applied to the cell membrane alone cannot. A mechanical model is proposed to explain how the interaction between the actin cortex and mechanical forces leads to long-range membrane tension transmission.
Article
Materials Science, Multidisciplinary
Chao Liu, Ye Yuan, Anrui He, Fenjia Wang, Wenquan Sun, Jian Shao, Hongyan Liu, Ruilin Miao, Xuegang Zhou, Bo Ma
Summary: Different from other profile defects, the edge warping defect is unique and its cause and control method are still unknown. By calculating the roll shape, it is found that the high-order comprehensive roll gap contour is the main cause of strip edge warping. Optimizing the original roll shape can effectively prevent the occurrence of edge warping defects.
Article
Metallurgy & Metallurgical Engineering
Lianjie Li, Haibo Xie, Tianwu Liu, Xingsheng Li, Xu Liu, Mingshuai Huo, Enrui Wang, Jianxin Li, Hongqiang Liu, Li Sun, Zhengyi Jiang
Summary: In this study, an elastic-plastic multi-stand FE model considering the work hardening effect was proposed for investigating the influence of rolling force on strip shape. The results show that the strip crown exhibits varying trends at different stands with changes in rolling force. This research offers a new perspective on TCR simulation and enhances understanding of the impact of rolling force on strip shape.
STEEL RESEARCH INTERNATIONAL
(2022)
Article
Automation & Control Systems
Lian-Yun Jiang, Yao-Yu Wei, Heng Li, Li-feng Ma
Summary: This paper investigates the modeling method of the equivalent strain based on the upper bound principle and the stream function method for the rolling process. The comparison between the analytic model and experimental results shows that the model can accurately calculate the strain along the plate thickness.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Psychology, Biological
Christian Panitz, Christopher Gundlach, Maeve R. Boylan, Andreas Keil, Matthias M. Mueller
Summary: Steady-state visual evoked potentials (ssVEPs) are commonly used to assess visuocortical responses in visual perception and attention. This study compared the effects of square-wave and sine-wave modulation functions in ssVEPs and found that square-wave modulation produced higher amplitudes at lower frequencies, while sine-wave modulation produced higher amplitudes at higher frequencies. The findings suggest that square-wave modulation should be used when maximizing signal amplitude or signal-to-noise ratio in ssVEP research.
Article
Materials Science, Multidisciplinary
Ying-Fang Zhang, Hessah Alqahtani, Yahya A. Rothan, Hosam A. Saad, Amira M. Hussin
Summary: A numerical code based on steam function formulation has been developed to study the flow and heat transfer of nanomaterials within a porous container with a sinusoidal hot surface. The model considers the influence of Lorentz force and buoyancy force on nanomaterial movement, with the shape of nano-powders and their concentrations as additional factors. Validation tests show that the code has good accuracy. Results indicate a decrease of 26.5% in Nu with the presence of Ha, and an increase of 28.64% in Nu with an increase in Ra in the absence of Ha. Loading nanoparticles leads to a 28.18% and 42.82% increase in Nu for Ha = 0 and 15, respectively. An increase in m causes an 11.94% increase in Nu, and the results show that loading nanoparticles have a greater impact in the presence of a magnetic field.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Mechanical
Boxin Yang, Haojie Xu, Qi An
Summary: This study proposes a method to describe edge deformation and calculate rolling force in vertical rolling process using functional analysis. By considering the adhesion of the contact interface, accurate results are obtained, and the effects of equipment parameters and slab size on the process are analyzed.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Shanshan Yang, Ruike Cui, Jie Liu, Min Wang, Ling Gao
Summary: In this paper, using fractal theory, the authors considered the roughness of the matrix pore surface based on previous research and established a relative roughness model for the matrix pore surface. They also derived a fractal model for the anisotropic interporosity flow function and shape factor, taking into account the relative roughness, tortuosity, and starting pressure of the matrix pore. The influence of relative roughness on the interporosity flow function and shape factor was analyzed, revealing an inverse relationship with the flow function and a proportional relationship with the shape factor. The rationality of the model was verified by comparing it with existing research.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Manufacturing
Lianjie Li, Haibo Xie, Tianwu Liu, Mingshuai Huo, Xu Liu, Xingsheng Li, Kexin Shi, Jianxin Li, Hongqiang Liu, Li Sun, Zhengyi Jiang
Summary: This study proposes a novel 3D multi-stand coupled thermo-mechanical finite element model to investigate the influence of rolling force on strip shape during tandem hot rolling. It was found that the rolling force increases strip crown, but the regulation efficiency decreases with the increase of stand. Additionally, lateral metal flow and strip plastic rigidity have a coupled effect on the regulation efficiency of rolling force on strip flatness.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Agriculture, Dairy & Animal Science
Sarah Dodd, Maureen Barry, Caitlin Grant, Adronie Verbrugghe
Summary: A 4-month-old male Old English Sheepdog was presented with progressive lameness after consuming a raw meat-based homemade diet. Severe dietary deficiencies were detected, leading to hypovitaminosis D and hypocalcaemia. Dexa scans revealed significantly subnormal bone mineralization, which improved with controlled exercise and appropriate diet formulation for large breed puppies.
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
(2021)
Article
Mechanics
Ravendra Prasad Namdeo, Bali Ram Gupta
Summary: This paper investigates the steady axisymmetric creeping motion of a conducting, incompressible viscous fluid past a weakly permeable slightly deformed sphere in the presence of a transverse magnetic field. The governing equations are transformed into dimensionless form and solved using the separation of variables method. The study shows the impact of Hartmann numbers, permeability, and deformation parameter on the coefficient of drag and the streamline pattern, indicating an enhancement of drag on the oblate spheroid compared to the prolate spheroid.
ARCHIVE OF APPLIED MECHANICS
(2022)
Article
Chemistry, Physical
Bowen He, Chuanbiao Bie, Xingang Fei, Bei Cheng, Jiaguo Yu, Wingkei Ho, Ahmed A. Al-Ghamdi, S. Wageh
Summary: The study synthesized a hybrid catalyst CdS/Ag2S/NiS, which significantly increased the hydrogen production rate due to the accelerated charge transfer and reduced electron-hole pair recombination facilitated by the Schottky junction and p-n junction between CdS, Ag2S, and NiS.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Physics, Applied
Ahmad Shafee
Summary: A numerical technique was employed to study the transport of nanofluid within a porous container, using a single-phase approach and implementing Darcy law to involve the porous term in the equation. The equation format was converted to stream function format and solved using CVFEM. The code was verified using previous data and the results showed that loading alumina increased Nu by 26.71% at Ha=0 and by 41.22% at Ha=15. Applying a magnetic field reduced Nu by 37.93% at Ra=700. Increasing the strength of the rotating cell resulted in a 38.22% increase in Nu as Ra increased. Changing the shape of alumina increased Nu by 11.73% at Ha=15 and Ra=700.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
