Study on Characteristics of Coupled-Core Four-Core Fibers With Different Core Pitches by Junjie Xiong, Lin Ma, Yanming Chang, Tianqi Cheng, Lei Shen, Lei Zhang, Changkun Yan, Lin Sun, Qingwen Liu, Zuyuan He

“…We studied the characteristics of coupled-core four-core fibers (CC-4CFs) with different core pitches both theoretically and experimentally. …”
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Comprehensive Approach to Core Training in Sports Physical Therapy: Optimizing Performance and Minimizing Injuries by Lewis G Lupowitz

“…The author introduces a personalized dynamic core assessment to evaluate multiplanar stabilization and proposes a four-phase intervention program called the "Core Four Pyramid Principles." This program includes activation, stabilization, integration, and perturbation phases, each with specific entry criteria, goals, and targeted exercises. …”
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Research on the Hierarchical Spatial Structure of the Urban Agglomeration of the Yellow River Ji-Shaped Bend by Fang Wang, Mengyao Guo, Xi Guo, Fangqu Niu

“…The following conclusions can be drawn. (1) The cities with the strongest regional comprehensive power are Ordos, Taiyuan, Hohhot, Yinchuan, and Yulin, which cause the UAYB to present a significant “center-periphery” spatial pattern. (2) The biggest population flows mostly occur between cities in the same province, while interprovincial population flows mainly exist between cities with the strongest comprehensive power. (3) The hierarchical spatial structure of the UAYB forms a multitree structure, with Ordos as the core. (4) The attractiveness of the UAYB is very weak, being only slightly attractive to individual surrounding provinces, while the population outflow index to economically developed areas is high. …”
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Unveiling the diversity of macrobenthic crustaceans on sandy beaches of the eastern Mexican coast: new records and an updated checklist by María R. Muciño-Reyes, María R. Muciño-Reyes, Edlin Guerra-Castro, Edlin Guerra-Castro, Raúl E. Castillo-Cupul, Carlos E. Paz-Ríos, Nuno Simões, Nuno Simões, Nuno Simões

“…Two sampling designs using sediment cores (4 versus 6 cores per transect) were implemented across 15 sandy beaches. …”
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Model Testing and Numerical Simulation of the Bearing Characteristics of Screw-Core Cement Mixing Pile by Luoan Wu, Yue Gao, Yaohui Du, Junjie Xuan, Jiu Nao, Shibo Li, Jinhao Li, Yanqi Wang, Hao Zhang, Lei Cao, Cheng Meng, Zewei Yang

“…The results indicate the following: (1) Due to differences in the pile core structure, the bearing capacity of the screw-core mixing pile is 1.44 times greater than that of the circular-core mixing pile. (2) When the vertical load is small, both the pile core and the mixing pile shell share the load; however, as the vertical load increases, the axial force gradually concentrates in the pile core, with the screw core showing a higher load-bearing capacity than the circular-core. (3) Under vertical load, the settlement of the screw-core mixing pile decreases stepwise from the top of the pile down to the surrounding area, demonstrating that the screw-core is more effective than the circular core. (4) The increase in thread height ratio significantly enhances the bearing capacity of the screw-core mixing pile. …”
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