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| 1 | A traditional formula of aconitum complex alleviates post-ischemic stroke by improving neural function显示文摘Stroke is the second leading cause of death worldwide.There are more than 2 million new stroke patients in China every year,and ischemic strokes account for 60%-70%of these patients[1].Even with proper hospital treatment,30%of stroke patients still die within a year after diagnosis.Furthermore,more than 80%of stroke survivors suffer from motor disorders(e.g.,hemiplegia and aphasia),and approximately 15%-30%are permanently disabled.Stroke affects not only individuals but also their families,causing severe social consequences[2]. | Ji Ma Ruiqi Pu Qinyang Zhou Maoru Li Jing Shang | 2024 | Acta Biochimica et Biophysica Sinica2024，56，2： | 0 |
| 2 | An abnormal carbody swaying of intercity EMU train caused by low wheel-rail equivalent conicity and damping force unloading of yaw damper显示文摘Low-frequency carbody swaying phenomenon often occurs to railway vehicles due to hunting instability,which seriously deteriorates the ride comfort of passengers.This paper investigates low-frequency carbody swaying through experimental analysis and numerical simulation.In the tests,the carbody acceleration,the wheel-rail profiles,and the dynamic characteristics of dampers were measured to understand the characteristics of the abnormal carbody vibration and to find out its primary contributor.Linear and nonlinear numerical simulations on the mechanism and optimization measures were carried out to solve this carbody swaying issue.The results showed that the carbody swaying is the manifest of carbody hunting instability.The low equivalent conicity and the decrease of dynamic damping of the yaw damper are probably the cause of this phenomenon.The optimization measures to increase the equivalent conicity and dynamic damping of the yaw damper were put forward and verified by on-track tests.The results of this study could enrich the knowledge of carbody hunting and provide a reference for solving abnormal carbody vibrations. | Yixiao Li Maoru Chi Zhaotuan Guo Shulin Liang | 2023 | Railway Engineering Science2023，31，3： | 0 |
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