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Precision loss of ball screw mechanism under sliding-rolling mixed motion behavior
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作者 QI Bao-bao CHENG Qiang +2 位作者 LI Shun-lei LIU Zhi-feng YANG Cong-bin 《Journal of Central South University》 SCIE EI CAS CSCD 2021年第5期1357-1376,共20页
The sliding-rolling mixed motion behavior degrades the ball screw’s precision at different levels.Based on the sliding-rolling mixed motion between ball and screw/nut raceway,the ball screw’s precision loss consider... The sliding-rolling mixed motion behavior degrades the ball screw’s precision at different levels.Based on the sliding-rolling mixed motion between ball and screw/nut raceway,the ball screw’s precision loss considering different given axial loading and rotational speed working conditions was investigated.Since creep and lubrication relate to sliding and rolling motion wear,the creep and lubrication characteristics are analyzed under different working conditions.Besides,the precision loss was calculated considering the sole influence of sliding behavior between ball and screw and compared with the results from other current models.Finally,research on precision loss owing to the sliding-rolling mixed motion behavior was realized under given working conditions,and suitable wear tests were carried out.The analytical results of precision loss are in good agreement with the experimental test conclusions,which is conducive to better predicting the law of precision loss in stable wear period. 展开更多
关键词 ball screw mechanism precision loss sliding-rolling mixed motion creep lubrication
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Precision medicine in hearing loss 被引量:2
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作者 Jason R.Rudman Christine Mei +2 位作者 Sara E.Bressler Susan H.Blanton Xue-Zhong Liu 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2018年第2期99-109,共11页
Precision medicine(PM) proposes customized medical care based on a patient's unique genome, biomarkers, environment and behaviors. Hearing loss(HL) is the most common sensorineural disorder worldwide and is frequ... Precision medicine(PM) proposes customized medical care based on a patient's unique genome, biomarkers, environment and behaviors. Hearing loss(HL) is the most common sensorineural disorder worldwide and is frequently caused by a single genetic mutation. With recent advances in PM tools such as genetic sequencing and data analysis, the field of HL is ideally positioned to adopt the strategies of PM.Here, we review current and future applications of PM in HL as they relate to the four core qualities of PM(P4): predictive, personalized, patient-centered, and participatory. We then introduce a strategy for effective incorporation of HL PM into the design of future research studies, electronic medical records,and clinical practice to improve diagnostics, prognostics, and, ultimately, individualized patient treatment. Finally, specific anticipated ethical and economic concerns in this growing era of genomics-based HL treatment are discussed. By integrating PM principles into translational HL research and clinical practice, hearing specialists are uniquely positioned to effectively treat the heterogeneous causes and manifestations of HL on an individualized basis. 展开更多
关键词 precision medicine Personalized medicine Hearing loss Genetics
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