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| 1 | Finite element simulation and experimental test of the wear behavior for self-lubricating spherical plain bearings显示文摘In this study, based on the classical Archard adhesion wear theory, a three-dimensional finite element model was established, with the aim of simulating the failure process of self-lubricating spherical plain bearings in the swinging wear condition. The results show that the self-lubricating spherical plain bearings go through two different stages during the wear process, namely, initial wear stage and stable wear stage. Because the large contact points wear out during the initial wear stage, the maximum contact pressure decreases as the test period increases. The relatively larger wear depth region shows elliptical distribution, and the maximum distribution appears in the central contact area. The wear depth reaches 0.974 mm after swinging 25,000 times. PTFE fibers, which possess a good friction performance but poor abrasion resistance, abundantly exist on the friction surfaces of the fabric liner. Consequently, the friction torque during the initial wear stage is slightly smaller than the friction torque during the stable wear stage; however, the wear rate during the initial wear stage is high. The reliability and effectiveness of the finite element model are verified by experiment. The developed finite element model can be used for the analysis of the wear mechanisms of bearings and the prediction of the service life of bearings. | Yahong XUE Jigang CHEN Sumin GUO Qingliang MENG Junting LUO | 2018 | Friction2018，6，3： | 11 |
| 2 | Formation and vanishment of the intragranular microstructure in Si_2N_2O/Si_3N_4 nanocomposites显示文摘Si2N2O/Si3N4 nanocomposites were fabricated by liquid phase sintering of amorphous nano-sized silicon nitride powders.The intragranular microstructure was observed and researched.Intragranular microstructure's β-Si3N4 was formed in Si2N2O matrix at the sintering temperature higher than 1650°C.It was discovered that intragranular microstructure could also disappear by transformation during high temperature annealing.Two possible mechanisms of the disappearance of intragranular microstructure were given.The effect of intragranular microstructure on main mechanical properties was also investigated. | LUO JunTing,LIU RiPing & QI Li State Key Laboratory of Metastable Materials Science and Technology,College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China | 2010 | Science China(Technological Sciences)2010，53，1： | 2 |
| 3 | Formation and Vanishment of the Intragranular Microstrueturein Si2N20/ Si3 N4 Nanocomposites显示文摘 | Luo Junting Liu Riping | 2010 | Science in China Series E: Technological Sciences2010，53，： | 1 |
| 4 | Superplastic Extrusion of Nano-- structured Si2 Nz O-- Sialon显示文摘 | Luo Junting Zhang Qing Li Hongbo | 2007 | Materials Science Forum2007，，： | 1 |
| 5 | Cold Ex- trusion Forming of Copper/aluminum Clad Com- posite显示文摘 | Luo Junting Xu Yan Zhao Shuangjing | 2009 | Internal journal of Apply Mechanic and Materials2009，1619，： | 1 |
| 6 | The inflammation-based scores to predict prognosis of patients with hepatocellular carcinoma after hepatectomy显示文摘 | Junting Huang Li Xu Yaoling Luo Fengying He Yaojun Zhang Minshan Chen | 2014 | Medical Oncology2014，，4： | 1 |
| 7 | Fabrication of fine-grained Si3N4-Si2N2O composites by sintering amorphous nano-sized silicon nitride powders显示文摘 | Luo Junting Ph D Zhang Kaifeng Wang Guofeng Han Wenbo | 2006 | Journal of Wuhan University of Technology - Mater Sci Ed2006，，3： | 1 |
| 8 | Preparation and characterization of MgO hybrid biochar and its mechanism for high efficient recovery of phosphorus from aqueous media显示文摘Conversion of organic waste into engineered metal-biochar composite is an effective way of enhancing biochar’s efficiency for adsorptive capture of phosphorus(P)from aqueous media.Thus,various strategies have been created for the production of metal-biochar composites;however,the complex preparation steps,high-cost metal salt reagent application,or extreme process equipment requirements involved in those strategies limited the large-scale production of metal-biochar composites.In this study,a novel biochar composite rich in magnesium oxides(MFBC)was directly produced through co-pyrolysis of magnesite with food waste;the product,MFBC was used to adsorptively capture P from solution and bio-liquid wastewater.The results showed that compared to the pristine food waste biochar,MFBC was a uniformly hybrid MgO biochar composite with a P capture capacity of 523.91 mg/g.The capture of P by MFBC was fitted using the Langmuir and pseudo-first-order kinetic models.The P adsorptive capture was controlled by MgHPO4 formation and electrostatic attraction,which was affected by the coexisting F−and CO_(3)^(2−)ions.MFBC could recover more than 98%of P from the solution and bio-liquid wastewater.Although the P-adsorbed MFBC showed very limited reusability but it can be substituted for phosphate fertiliser in agricultural practices.This study provided an innovative technology for preparing MgO-biochar composite against P recovery from aqueous media,and also highlighted high-value-added approaches for resource utilization of bio-liquid wastewater and food waste. | Yueru Fang Amjad Ali Yuxi Gao Peng Zhao Ronghua Li Xianxian Li Junxi Liu Yuan Luo Yaru Peng Hailong Wang Hongbin Liu Zengqiang Zhang Junting Pan | 2022 | Biochar2022，4，1： | 0 |
| 9 | Antibacterial Effect of Herba paederiae and Kalimeris indica (L.) Sch.-Bip Combined with Antibiotics显示文摘[Objective] To observe the in-vitro antibacterial activity of Herba paederiae and Kalimeris indica (L.) Sch.-Bip and their antibacterial effect when being used with commonly used antibiotics. [Method] Staphylococcus aureus CMCC29178 and Escherichia coli ATCC25922 reference strains were used for the determination of minimal inhibitory concentration (MIC) and fractional inhibitory concentration (FIC) index using the broth microdilution method. [Result] The aqueous extracts of Herba paederiae and Kalimeris indica (L.) Sch.-Bip had certain antibacterial effects on Staphylococcus aureus and Escherichia coli. Synergistic effects or additive effects at different degrees were observed when they were applied with the commonly used antibiotics. [Conclusion] Water extraction can be widely used to primarily screen medicinal plants with antibacterial activity. | CHEN Wei-ming LIANG Junt HUANG Zhi-hong YANG Li-xue LUO Jing CHEN Chao-xi | 2012 | Animal Husbandry and Feed Science2012，4，1： | 0 |
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