|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Optimization of groove texture profile to improve hydrodynamic lubrication performance:Theory and experiments显示文摘It is well known that groove texture with a careful design can be used to enhance the load‐carrying capacity of oil film under the conditions of hydrodynamic lubrication.In this study,a general parametric model was developed,and agenetic algorithm‐sequential quadratic programming hybrid method was adopted to obtain the global‐optimum profile of the groove texture.The optimized profiles at different rotating speeds are all chevrons.The numerical analysis results verified the effect of the optimization.In addition to the numerical optimization,experiments were conducted to validate the superiority of the optimized results.The experimental results show that the optimized groove texture can efficiently reduce the coefficient of friction(COF)and the temperature rise of the specimen.In particular,the optimized groove textures can achieve stable ultra‐low COF values(COF<0.01)under certain conditions. | Wei WANG Yongyong HE Jun ZHAO Junyuan MAO Yutong HU Jianbin LUO | 2020 | Friction2020，8，1： | 13 |
| 2 | An investigation on the tribological behaviors of steel/copper and steel/steel friction pairs via lubrication with a graphene additive显示文摘In this study,the tribological behaviors of graphene as a lubricant additive for steel/copper and steel/steel friction pairs were compared.For the steel/copper friction pair,the graphene sheets remarkably decreased the coefficient of friction and wear scar depth under low loads,but these slightly increased under high loads.The steel/steel friction pair showed excellent tribological properties even under high loads.Severe plastic deformation on the copper surface reduced the stability of the graphene tribofilm because of a rough copper transfer film on the steel during the running-in period.The results provide a better understanding of the mechanism of graphene as a lubricant additive. | Junyuan MAO Guangyan CHEN Jun ZHAO Yongyong HE Jianbin LUO | 2021 | Friction2021，9，2： | 2 |
| 3 | Cardiac abnormalities in severe acute dichlorvos poisoning显示文摘 | Xinhua He Chunsheng Li Dongmei Wei Junyuan Wu Luhui Shen Tie Wang | 2011 | Critical Care Medicine2011，，8： | 1 |
| 4 | Hydration of fly ash-Portland cements 显示文摘 | HE Junyuan SCHEETZ B E ROY D M | 1984 | Cem Concr Res1984，14，4： | 1 |
| 5 | Angular Effects on F+ Etching SiC: MD Study显示文摘Molecular dynamics(MD) simulations were performed to investigate F+ continuously bombarding SiC surfaces with energies of 100 eV at different incident angles at 300 K.The simulated results show that the steady-state uptake of F atoms increases with increasing incident angle.With the steady-state etching established,a Si-C-F reactive layer is formed.It is found that the etching yield of Si is greater than that of C.In the F-containing reaction layer,the SiF species is dominant with incident angles less than 30o.For all incident angles,the CF species is dominant over CF2 and CF3. | CHEN Xu TIAN Shuping HE Pingni ZHAO Chengli SUN Weizhong ZHANG Junyuan CHEN Feng GOU Fujun | 2012 | Plasma Science and Technology2012，14，12： | 0 |
| 6 | Influences of Lucas Pacioli on Modern Chinese Accounting显示文摘From primitive calculation and recordation times to A. D. 1200’s, Chinese accounting development bad been in the line of world advancement, and its long history is confirmed by accounting historians (Chatfield, 1989. p8). However, in recent history (from 1840 to 1905), while most of the western countries had | Zhongnan University of Finance and Economics Guo Daoyang, Zhang Jinxiu Finance Department of Hubei Province Tong Daoyou, He Maoqing Shenzhen Airport Company Yang Junyuan | 1994 | 财会通讯(上)1994，，S1： | 0 |
| 7 | Formation of sulfur oxide groups by SO_(2) and their roles in mercury adsorption on carbon-based materials显示文摘The presence of SO_(2) display significant effect on the mercury(Hg) adsorption ability of carbon-based sorbent. Yet the adsorption and oxidation of SO_(2) on carbon with oxygen group, as well as the roles of different sulfur oxide groups in Hg adsorption have heretofore been unclear. The formation of sulfur oxide groups by SO_(2) and their effects on Hg adsorption on carbon was detailed examined by the density functional theory. The results show that SO_(2) can be oxidized into SO_(2) by oxygen group on carbon surface. Both C-SO_(2) and C-SO_(2)can improve Hg adsorption on carbon site, while the promotive effect of C-SO_(2) is stronger than C-SO_(2). Electron density difference analyses reveal that sulfur oxide groups enhance the charge transfer ability of surface unsaturated carbon atom, thereby improving Hg adsorption. The experimental results confirm that surface active groups formed by SO_(2) adsorption is more active for Hg adsorption than the groups generated by SO_(2). | Fenghua Shen Shudan He Junyuan Li Cao Liu Kaisong Xiang Hui Liu | 2022 | Journal of Environmental Sciences2022，34，9： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员