Bulge Oscillation Driven by Outflows of Active Galactic Nuclei. I. Fast Outflow Case by Yue-Chang Peng, Jian-Min Wang, Yu Zhao, Luis C. Ho

“…We show that the potential perturbation of outflows, together with injection and dynamical friction of these stars, could drive bulge oscillations. …”
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Performance of some civil engineering structures on Odukpani clay shale, Southeastern Nigeria by Abidemi Olujide Ilori, Anthony Michael George, Ini Christopher Umoh, Ediomo O. Eyakndue, Ubong Udoette Ukpekpe

“…Geotechnical shear strength properties determined by Direct shear tests for Ekenkpon indicate cohesion value’C, of 36.1 kN/m2, angle of shearing resistance of 36.8°, that of Nkporo shale with cohesion value as 36 kN/m2 and angle of internal friction as 3.6°. Based on the shear strength properties, Ekenkpon shale has a bearing capacity of 3902.95 kN/m2, Nkporo shale has a value of 667.02 kN/m2, and New Netim Marl with a value of 319.75 kN/m2. …”
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Present-day mass loss rates are a precursor for West Antarctic Ice Sheet collapse by T. van den Akker, W. H. Lipscomb, G. R. Leguy, J. Bernales, C. J. Berends, W. J. van de Berg, R. S. W. van de Wal, R. S. W. van de Wal

“…This is achieved by a combination of tuned thermal forcing under the floating ice shelves and friction under the ice sheet. Starting from this improved present-day state, we generate an ensemble of future simulations of Antarctic mass change by varying model physical choices and parameter values while fixing the climate forcing at present-day values. …”
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Effects of stacking sequence of the layers on deformation behavior and microstructure evolution of Ti/Ni laminated metal composites by Jie Zhao, Bing Zhang, Tianli Zhao, Zhijuan Zhang, Zhiqiang Lei, Zhaolin Wang, Zengwen Zhang, Shancheng Zhan, Longjie Dang, Kuaishe Wang

“…By the analysis of strain field, the friction force between the rollers and the plates causes the intensive shear deformation in the outer layer, leading to microstructure characterized by more elongated grains and higher dislocation densities. …”
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Rash with DERMABOND PRINEO Skin Closure System Use in Bilateral Reduction Mammoplasty: A Case Series by R. W. Knackstedt, J. A. Dixon, P. J. O’Neill, F. A. Herrera

“…However, as we demonstrate these three allergic reactions to DERMABOND PRINEO Skin Closure System, caution must be utilized in its usage, namely, in patients with a prior adhesive allergy and in sites where moisture or friction may be apparent.…”
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Dynamic Mechanical Response, Cracking Behavior, and Stress Intensity Factors of Cement Mortar Specimens with Open and Closed Flaws by Qizhi Wang, Fangshi Shi, Xiao Wang, Qingling Meng, Xing Li, Jinbo Song, Chang-yi Yu

“…The strength, cracking behavior, and stress field around the tip during the dynamic loading are closely related to the friction effect between the flaw surfaces. The findings in this work provide some basic insights into the cracking mechanism of rock with open and closed flaws under dynamic loading conditions.…”
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Multi‐Mechanism Collaborative Bionic Fixation Technique Between a Wide Range of Solid Interfaces by Shixun Fu, Jun Sun, Zhiyong Hu, Yongjin Zhao, Tianchang Yao, Xipeng Wang, Yuanming Ji, Kai Deng, Keju Ji

“…The device is equipped with a suction disc with gradient guide channels, a microneedles friction‐enhancing unit, and fast‐curable UV glue. …”
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Effects of plasma surface Ta alloying on the tribology behavior of γ-TiAl by Wei D.-B., Zhou X., Li F.-K., Li M.-F., Li S.-Q., Zhang P.-Z.

“…Surface Ta alloying process significantly reduced the wear volume, the specific wear rate and the friction coefficient of γ-TiAl and improved the wear resistance properties of γ-TiAl.…”
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Simulation of Load–Sinkage Relationship and Parameter Inversion of Snow Based on Coupled Eulerian–Lagrangian Method by Ming Zhu, Pengyu Li, Dongqing Li, Wei Wei, Jianfeng Liu, Xixing Long, Qingkai Meng, Yongjie Shu, Qingdong Yan

“…The results show the following: (1) The material cohesive, angle of friction, and hardening law of snow have great influence on the load–sinkage relationship of snow, the elastic modulus has a great influence on the unloading/reloading stiffness of snow, and the influence of density and Poisson’s ratio on the load–sinkage relationship can be ignored. (2) The correlation coefficient between the inversion result and the matching test data is 0.979, which is 0.304 higher than that of the initial inversion curve. (3) The load–sinkage relationship of snow with different snow depths and plate diameters was simulated by using the model parameter of inversion, and the results were compared with the experimental results. …”
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Digital Hydraulic Motor Characteristic Analysis for Heavy-Duty Vehicle Traction by Hao Zhang, Wenshu Wei, Hong Wang, Yang Zhang, Xiaochao Liu

“…This design effectively mitigates the performance degradation issues associated with friction and wear in traditional hydraulic motor oil distributors. …”
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Mechanical properties of the liner for strengthening steel pipe under the action of normal fault by Kejie Zhai, Deqiang Hu, Kaidong Wang, Hongyuan Fang, Niannian Wang, Bin Li, Xueming Du, Yuquan Hu, Xiangqian Fan

“…Then, the stress distribution of the liner is analyzed, and the effects of fault slip distance, slip angle, pipe diameter, host thickness, internal pressure, liner elastic modulus, and friction factor on the liner stress and vertical displacement are studied. …”
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Behaviour of TiC Particles on the Co50-Based Coatings by Laser Cladding: Morphological Characteristics and Growth Mechanism by Nga Thi-Hong Pham, Van-Thuc Nguyen

“…The wear resistance of Co50 alloy, Co+10% TiC, and Co+20% TiC composite coatings is greatly higher than that of H13 steel, showing excellent wear characteristics. The friction coefficient of the coatings which have TiC is very stable. …”
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Immunoregulative coating for scarless healing in anterior cruciate ligament reconstruction by Shuang Wang, Chao Xu, Yuanman Yu, Jie Li, Tianwu Chen, Jing Wang, Changsheng Liu

“…Comprising gelatin methacrylate (GelMA), polyethyleneglycol diacrylate (PEGDA), and sulfated polysaccharide (SCS), the hydrogel forms a hydrogen-bonded lubricating layer to reduce friction. The sustained release of SCS also down-regulates M1 macrophage polarization, inhibiting early scar formation. …”
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Tailoring graphite fiber addition to improve high-temperature wear resistance graphite fiber/ Fe composite by Boer Cao, Qinyuan Huang, Yuhao Wu, Hongli Cao, Shangyang Zou, Quan Shan

“…Within this range, composites with 15 vol% Gf demonstrated a stable friction coefficient, lower wear volume, and lower wear rate, indicating superior wear resistance. …”
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Lubricity potentials of Azadirachta indica (neem) oil and Cyperus esculentus (tiger nut) oil extracts and their blends in machining of mild steel material by Ignatius Echezona Ekengwu, Ikechukwu Geoffrey Okoli, Obiora Clement Okafor, Obiora Nnaemeka Ezenwa, Joseph Chikodili Ogu

“…Friction amongst the cutting tool and workpiece in metal machining produces heat that reduces tool life and workpiece integrity. …”
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The effect of ultrasonic vibrations with superimposed low-frequency modulation on the mechanical, tribological properties and structure of a multicomponent polymer composite by D. A. Negrov, V. Yu. Putintsev, A. I. Glotov, D. A. Veber

“…The result of the research, it is found that the influence of the technological mode of pressing, consisting in the combined effect of ultrasonic vibrations with frequency and low-frequency vibration during the synthesis of KVN-3, makes it possible to increase the complex of elastic-mechanical characteristics: tensile strength by 3 %, elongation by 6 %, modulus of elasticity by 10 %, hardness by 2 %, compared to the industrial manufacturing method, as well as to reduce the intensity of mass wear by 68 % and the coefficient of friction by 3 %. The structure of polymer composite materials after different technological pressing modes is examined. …”
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Heat transportation of 3D chemically reactive flow of Jeffrey nanofluid over a porous frame with variable thermal conductivity by Nahid Fatima, Aaqib Majeed, Taoufik Saidani, Nouman Ijaz, Kamal Barghout, Nidal Abu-Libdeh

“…Additionally, important engineering parameters under different constraints-like skin friction, Nusselt number, and Sherwood number—are given in a thorough manner using tabular and graphical representations. …”
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Simulation of the Performance of Kevlar Impregnated Shear Thickening Fluid Ballistic Test Results (STF) Ballistic Test Results by Riduwan Prasetya, Andoko Andoko, Suprayitno Suprayitno, Retno Wulandari, Prihanto Trihutomo, Kenji Mishima, Dawid Janas

“…The addition of STF resulted in increased coefficients of friction on Kevlar, with the highest values observed for the SiO2-PEG200-B4C impregnated fabric (  =0.87 and =0.82). …”
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Transient response and analytical solution of burst phenomenon in long distance water pipeline by Zhi-Guo Tao, Ling Zhou, Yun-Jie Li, Yuan Huang, Yan-Qing Lu, Yin-Ying Hu, Rui-Ling Feng

“…Subsequently, a pipe burst model considering unsteady friction effect was developed and validated through experiments. …”
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Numerical investigation on thermal-fractional characteristics inside a heated tube enhanced with a novel grooved cone turbulator by Bing Mei, Azher M. Abed, Pinank Patel, Ankit Kedia, Hamdi Ayed, Abir Mouldi, Ibrahim Mahariq

“…Notably, the use of the GCT increased the Nusselt number and friction factor by as much as 762 % compared to the plain tube and by 221 % compared to the SCT-equipped tube. …”
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