Understanding the friction laws of Amontons and Coulomb by evaluating the real contact area by Mitjan Kalin, Petra Jan

“…In particular, to take full advantage and achieve better accuracy with the two-parameter equation, the real contact area must be well characterized to determine the constant adhesive component sufficiently and accurately. In this study, we performed sliding experiments and measured friction, but at the same time, we also measured the real contact area with sub-micron lateral resolution, which allowed us to design a two-parameter (Coulomb-type) friction equation. …”
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Advantages of Friction Welding of Fittings with Small Diameter Conical Contact Form by Yu. V. Poletaev, V. V. Shchepkin

“…The experimental study was performed on a friction welding machine MST–41. Methods of non-destructive and destructive quality control were used in accordance with the regulatory and technical documentation of nuclear power engineering.Results. …”
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Detection of frictional meltwater on snow surface using a humidity indicator by Shiraz Ahmed Siddiqui, Michael Hasler, Martin Mössner, Joost van Putten, Kurt Schindelwig, Werner Nachbauer

“…The resulting change in color of the chemical from violet to blue is supposed to be a good indicator of the formation of frictional meltwater. The experiments were performed at the snow lab of the Research Center Snow, Ski and Alpine Sports at the University of Innsbruck (Austria) on a linear tribometer with 18 m sliding surface length (Hasler et al., 2016). …”
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The effects of compound probiotics on production performance, rumen fermentation and microbiota of Hu sheep by Lijun Wang, Zhanqi Lv, Xiaodong Ning, Zhiguang Yue, Ping Wang, Chaoqi Liu, Sanjun Jin, Xinxin Li, Qingqiang Yin, Qun Zhu, Juan Chang

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Effects of Ursolic Acid on Immune Function and Antioxidative Capacity in Weaned Rabbits by Yanhua Liu, Saijuan Chen, Fengyang Wu, Baojiang Chen, Chong Li, Xinyu Yang, Gang Zhang, Man Hu

“…This study aimed to investigate the effects of dietary supplementation with different levels of ursolic acid (UA) on the growth performance, immune function, intestinal antioxidant capacity, and anti-inflammatory responses of weaned rabbits. …”
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Research on Efficiency Evaluation of Multi-functional Heat Pump by Jiang Mingliu, Wu Jingyi, Wang Ruzhu, Xu Yuxiong

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THE RELATIONSHIP BETWEEN PERFORMANCE OF THE ADMINISTRATIVE SYSTEM AND NATIONAL AUTHORITY OF GOVERNMENTS: AN ISLAMIC POINT OF VIEW by Mahtab Jafari

“…The authority of governments is not merely limited to their structural legitimacy and acceptance; but, their functional dimension and the performance of their administrations also play a crucial role in building and strengthening their legitimacy. …”
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Maximizing sprint performance among adolescent sprinters: a controlled evaluation of functional, traditional, and combined training approaches by Xiaohuan Liu, Xiaohuan Liu, Yongjing Shao, Sohom Saha, Zijian Zhao, Debajit Karmakar

Subjects: “…functional training…”
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Re-evaluating riboflavin requirements for laying quails: Implications for productivity and yolk antioxidant function by Osman Olgun, Esra Tuğçe Gül, Gözde Kılınç, Alpönder Yıldız, Ainhoa Sarmiento-García

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The relationship between shift work, circadian rhythms, and cognitive function in ICU nursing by Saeideh Moosavi, Mehran Ghalenoei, Mohammad Amerzadeh, Ali Safari Variani

“…Given the vital role of cognitive functions such as working memory and attention, this study investigated the impact of circadian rhythm disturbances on the cognitive performance of intensive care unit (ICU) nurses in Qazvin City, Iran. …”
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Influence of 3D-Printed PEEK on the Tribo-Corrosion Performance of Ti6Al4V Biomedical Alloy by Dominik Jonas Federl, Abbas Al-Rjoub

“…Open-circuit potential (OCP) measurement of Ti6Al4V demonstrates the alloy’s superior electrochemical stability, indicating high corrosion resistance and a favorable coefficient of friction. These findings highlight the potential of 3D-printed PEEK as a viable alternative for biomedical applications, offering rapid patient-specific prototyping, tunable mechanical properties, and improved surface adaptability compared to conventional materials.…”
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Macro and micro structural responses of dissimilar TC4/TC17 titanium alloy joints in linear friction welding and post-welding heat treatment processes and their effects on tensile and fatigue performance by Jiatao Liu, Jinglong Li, Feng Jin, Da Zhang, Wei Guo, Jiangtao Xiong

“…This study investigates the macro and microstructural responses of TC4/TC17 joints during LFW and post-weld aging, focusing on tensile and fatigue properties. Welding was performed at varying pressure (30–150 MPa) and frictional speed (240–400 mm/s) to evaluate burn-off length, interface integrity, and tensile strength. …”
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Investigation on the Coupling Effect of Bionic Micro-Texture Shape and Distribution on the Tribological Performance of Water-Lubricated Sliding Bearings by Xiansheng Tang, Yunfei Lan, Sergei Bosiakov, Michael Zhuravkov, Tao He, Yang Xia, Yongtao Lyu

“…The shape, dimensions (including length, width, and depth), and distribution of these micro-textures have a significant influence on the frictional performance. Therefore, this study aims to explore the coupling effect of different micro-texture shapes and distributions on the frictional performance of water-lubricated sliding, using the computational fluid dynamics (CFD) analysis. …”
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Performance Evaluation of a Triple Concentric Tube Heat Exchanger Using Deionized Water and Oil-40 by Huda Majid Hasen

“… This study examines experimentally the performance of a horizontal triple concentric tube heat exchanger TCTHE made of copper metal using water as cooling fluid and oil-40 as hot fluid. …”
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Small Laser-Textured Dimples for Improved Tribological Performance of CoCrMo in Artificial Hip Joints by William B. Bennett, Min Zou

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Research progress on evaluation index of workers’ task performance by Zheyu HUANG, Yuhong SHEN, Jian ZHANG, Lihua HE, Yun WANG

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63 Correlation between gait performance and global cognitive functions in senior adults: A systematic review by Joel Acevedo, Joel Acevedo-Nieto, P Karen Martínez, Claudia Amaya, Kun Liu

“…Objectives/Goals: Gait performance (GP) and global cognitive functions (GCF) are both critical for maintaining independence and quality of life in senior adults. …”
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Cognitive function and physical performance in young adults who had and had not experienced the COVID-19 infection by Suphannika Ladawan, Patchareeya Amput, Saisunee Konsanit, Patcharin Phrompao

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Experimental Study on the Performance Characteristic of a New-type Heat-source Tower with Pre-condensation Function by Xia Yi, Sun Libiao, Liang Caihua, Zhang Xiaosong

“…So a new-type heat-source tower structure with pre-condensation function was designed. The operation process of new-type tower was analyzed. …”
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Performance of Fitness Functions Based on Natural Frequencies in Defect Detection Using the Standard PSO-FEM Approach by Xiao-Lin Li, Roger Serra, Julien Olivier

“…Our objective is to compare the performances of four fitness functions based on natural frequencies using the standard PSO-FEM approach for defect detection. …”
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