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139 results on '"Li, Lusheng"'

16. Research of the Influence of Bearing Clearance on the Transmission Efficiency of Gearbox

Author

Mo Yimin, Xu Wei, Hu Jie, Dong Jixing, and Li Lusheng

Subjects
Bearing clearance, Gearbox, Transmission efficiency, Fuel consumption, Mechanical engineering and machinery, TJ1-1570
Abstract

For the problem that the friction power loss of the deep groove ball bearing will directly affect the transmission efficiency of the gearbox,the composition of the friction torque of deep groove ball bearing under quasi-static condition is analyzed. By changing the size of the bearing clearance to reduce the friction power loss is also proposed and a bench test to explore the influence of the bearing clearance on the transmission efficiency of the gearbox is designed. Finally,the experiments of the whole vehicle taxiing resistance and fuel consumption are verified. The result shows that properly increasing the bearing clearance can reduce the friction power loss of deep groove ball bearing and improve transmission efficiency,it also can increase the vehicle taxi distance and reduce the vehicle fuel consumption. This study provides a reference for the selection of bearing clearance of gearbox.

Published
2018
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41. Treatment of Landfill Leachate Using Activated Sludge Technology: A Review

Author

Wang, Kai, Li, Lusheng, Tan, Fengxun, and Wu, Daoji

Subjects
Article Subject
Abstract

Landfill leachate contains a large amount of organic matter and ammoniacal nitrogen. As such, it has become a complex and difficult issue within the water treatment industry. The activated sludge process has been found to be a good solution with low processing costs and is now therefore the core process for leachate treatment, especially for nitrogen removal. This paper describes the characteristics and treatment of leachate. Treatment of leachate using the activated sludge process includes the removal of organic matter, ammoniacal nitrogen, and total nitrogen (TN). The core method for the removal of organic matter involves anaerobic treatment supplemented with an aerobic process. Ammoniacal nitrogen is commonly removed using a conventional aerobic treatment, and advanced TN removal is achieved using endogenous denitrification or an anaerobic ammonium oxidation (ANAMMOX) process. Since biological processes are the most economical method for TN removal, a key issue is how to tap the full potential of the activated sludge process and improve TN removal from leachate. This complex issue has been identified as the focus of current scholars, as well as an important future direction for leachate research and development.

Published
2018
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50. PI3K/AKT/Afadin signaling pathway contributes to pathological vascularization in glioblastomas.

Author

Zhai, Xuan, Li, Yingliang, Liang, Ping, Li, Lusheng, Zhou, Yudong, Zhang, Weidan, Wang, Difei, and Wei, Guanghui

Subjects
GLIOBLASTOMA multiforme, PHOSPHOINOSITIDES, ENDOTHELIAL cells, VASCULAR endothelial cells, PHOSPHORYLATION
Abstract

Glioblastomas are brain tumors with extensive vascularization that are associated with tumor malignancy. The phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) signaling pathway is activated in endothelial cell tumors, although its exact function in glioblastoma neovascularization is poorly characterized. The present study identified that endothelial cells derived from human glioblastomas exhibit increased permeability and motility compared with normal brain vascular endothelial cells. Furthermore, the phosphorylation of AKT was significantly induced in glioblastoma-derived endothelial cells and glioblastoma vessels. To the best of our knowledge, the present study demonstrated for the first time that the cell-cell adhesion junction protein Afadin is phosphorylated and re-localized in glioblastoma-derived endothelial cells, and the phosphorylation and re-localization of Afadin is PI3K/AKT pathway-dependent. AKT-mediated phosphorylation and re-localization of Afadin may be critically involved in the modulation of brain endothelial permeability and migration. Therapies targeting the PI3K/AKT/Afadin pathway may therefore be beneficial for reducing the angiogenic potential of glioblastoma. [ABSTRACT FROM AUTHOR]

Published
2018
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