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The paper is devoted to the adaptive tracking control based on the mismatched disturbance observer for motor‐driven robotic manipulators. A novel mismatched disturbance observer is introduced, which does not make bounded derivative assumptions on mismatched disturbances in the robotic manipulator system. Additionally, a new adaptive tracking controller for a motor‐driven robotic manipulator based on the mismatched disturbance observer is designed, which guarantees that all closed‐loop signals are globally uniformly bounded and the tracking error is asymptotic stable. Finally, the simulation comparisons are carried out between the proposed and existing control strategies to demonstrate the superiority of the developed controller. [ABSTRACT FROM AUTHOR]

Recent studies have shown that circular RNAs (circRNAs) are involved in many human diseases, but their roles in secondary damage after spinal cord injury (SCI) remain unclear. In the current study circRNA sequencing was performed in the damaged tissues of SCI rats on the seventh day after injury, and related molecular mechanisms were investigated. Quantitative PCR validations of molecules that exhibited significantly altered expression in SCI mice were performed. Gene ontology and Kyoto Encyclopedia of Genes and Genomes analyses were conducted to assess differentially expressed circRNAs. A novel circRNA‐2960 was the most significantly upregulated in the SCI group. It could downregulate its target molecule miRNA‐124, then exacerbate the inflammatory response and induce apoptosis at the lesion site. Disrupting circRNA‐2960 expression promoted recovery of tissues affected by secondary SCI damage. The results of the present study may provide new insight into the mechanisms of secondary injury in SCI, and a new molecular marker for the diagnosis and treatment of SCI. [ABSTRACT FROM AUTHOR]

A rapid design approach to achieve the optimal efficiency in a magnetic resonant wireless power transfer (MR‐WPT) system is presented. A concise design guideline is provided to determine the optimal efficiency condition and related coupling coefficients. Experimental validations are demonstrated by both simulation and measurement results of a 6.78 MHz MR‐WPT system prototype with the maximum efficiency of 76.1% at a 50 mm distance between transmitter and receiver. [ABSTRACT FROM AUTHOR]