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| 1 | Research on the Relationship between Molecular Activity of Additives and Lubricating Performance of Aluminum Rolling Oil显示文摘In this paper,an ab initio,local density functional(LDF)method was used to explore the relationship between the molecular properties of additives and the lubricating performance of aluminum rolling oil.The structural properties of butyl stearate,dodecanol,docosanol,and methyl dodecanoate were studied according to the density functional theory.The calculated data showed that the atoms in or around the functional groups might be likely the reacting sites.Because of the different functional groups and structure of ester and alcohol,two types of complex additives,dodecanol and butyl stearate,methyl dodecanoate and butyl stearate,respectively,were chosen for studying their tribological properties and performing aluminum cold rolling experiments.The test results agreed with the calculated results very well.The complex ester,viz.methyl dodecanoate and butyl stearate,had the best lubricating performance with a friction coefficient of 0.084 1 and a permissive-rolling thickness of 0.040 mm as compared with that of dodecanol-butyl stearate-base oil formulation. | Xia Lei Sun Jianlin Zeng Yingfeng Zhang Min Duan Qinghua | 2013 | China Petroleum Processing & Petrochemical Technology2013，15，3： | 6 |
| 2 | Study on Surface Adsorption and Inhibition Behavior of Corrosion Inhibitors Contained in Copper Foil Rolling Oil显示文摘Adsorption and inhibition behavior of 2,5-bis(ethyldisulfanyl)-1,3,4-thiadiazole(DMTDA) and N-((6-methyl-1H-benzo[d][1,2,3]triazol-1-yl)methyl)-N-octyloctan-1-amine(EAMBA) as corrosion inhibitors contained in copper foil rolling oil have been investigated using gravimetric and electrochemical techniques. Meanwhile, scanning electron microscopy(SEM) and energy dispersive spectrometer(EDS) have been employed to observe the surface topography and analyze the components on copper foil. The results show that the rolling oil containing DMTDA and EAMBA can significantly decrease the dissolution rate and increase the inhibition efficiency of samples, especially in the case of best compounded rolling oil system. The SEM and EDS investigations also confirmed that the protection of the copper foil surface is achieved by strong adsorption of the molecules which can prevent copper from being corroded easily. Reactivity descriptors of the corrosion inhibitors have been calculated by the density functional theory(DFT) and the reactivity has been analyzed through the molecular orbital and Fukui indices. Active sites of inhibitor are mainly concentrated on the ring and the polar functional groups, and in the meanwhile, the distribution is helpful to form coordination and backbonding among molecules and then to form stable adsorption on the metal surface. And this work provides theoretical evidence for the selection of corrosion inhibitors contained in copper foil rolling oil. | Xiong Sang Sun Jianlin Jiang Wei Xu Yang Zeng Yingfeng Xia Lei | 2015 | China Petroleum Processing & Petrochemical Technology2015，17，1： | 3 |
| 3 | Properties of New Mullite-SiC Bricks for CDQ Shafts显示文摘Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,high performance mullite-SiC bricks were developed.The bricks were produced by corundum,andalusite,SiC and other high purity raw materials.Metal silicon and alumina ultra micropowder were added to form dispersion multi-phase structure,fortifying the matrix and improving the microstructure.The products have excellent properties such as low porosity,high density,good wear resistance,high refractoriness under load,and good thermal shock resistance.The products can replace the ordinary mullite-SiC bricks and obtain a good service life. | MA Shulong WEI Yingfeng WANG Zhifeng MA Fei XIA Wenbin ZHOU Xiaowei | 2017 | China's Refractories2017，26，1： | 2 |
| 4 | An im- proved hybrid technique for computing the RCS of dihedral comer reflector with a protmsion显示文摘 | Xia Dongyu Qin Kaibing Pan Yingfeng | 2009 | IEEE Microwave Antenna Propagation and EMC Technol- ogies for Wireless Communications2009，，： | 1 |
| 5 | Effect of site-directed PEGylation of trichosanthin on its biological activity, immunogenicity, and pharmacokinetics显示文摘 | Qunxing An Yingfeng Lei Ning Jia Xianqing Zhang Yinlan Bai Jing Yi Rui Chen Aijun Xia Jing Yang Sanhua Wei Xiaodong Cheng Ailing Fan Shijie Mu Zhikai Xu | 2007 | Biomolecular Engineering2007，，6： | 1 |
| 6 | Attenuation of microwave transmission in a diameter-variable drill string bore显示文摘With the drill string hole being regarded as an ultra-long irregular lossy cylindrical waveguide, the optimal frequency point for microwave transmission was calculated according to the electromagnetic wave coupling theory, the attenuation law and efficient transmission distance of microwave channel were obtained and the microwave mode in the waveguide was analyzed. Furthermore, the channel model and signal attenuation model were established by the microwave transmission equivalent circuit method. The power attenuation coefficient per unit of length was proposed to simplify the analysis on effective transmission distance for the ultra-long drill string. The optimal frequency points of 139.7 mm(5.5 in) and 127 mm(5 in) API drill pipes are 2.04 GHz and 2.61 GHz, respectively, and there are several inner diameter varying sections and break points in the drill string hole along the axial direction. The microwave transmission suffers a lot of reflections. The channel impedance change is a key factor affecting the transmission quality. The lab and field tests reveal that the attenuation model established in this paper is accurate, and it is applicable to the design of microwave transmission measurement while drilling system. | XIA Wenhe MENG Yingfeng TANG Bo GUAN Wenting | 2018 | Petroleum Exploration and Development2018，45，3： | 0 |
| 7 | KDM4C与ATF4协同作用转录调控氨基酸代谢显示文摘组蛋白赖氨酸甲基转移酶(KNITs)和去甲基化酶(KDMs)通过控制组蛋白赖氨酸的甲基化状态,在转录调控中起着重要的作用。 | Erhu Zhao Jane Ding Yingfeng Xia Mengling Liu Bingwei Ye Jeong-Hyeon Choi Chunhong Yan Zheng Dong Shuang Huang Yunhong Zha Liqun Yang 崔红娟 Han-Fei Ding | 2017 | 科学新闻2017，19，4： | 0 |
| 8 | 转录分析显示高危险的人类神经母细胞瘤和小鼠神经母细胞瘤的球形细胞中有共同的代谢调节显示文摘高危险性的神经母细胞瘤(neuroblastoma)仍然是一种最致命的幼童癌症之一,而识别驱动或维持高危险性的神经母细胞瘤的代谢途径则可能开辟新的治疗方针。 | Mengling Liu Yingfeng Xia Jane Ding Bingwei Ye Erhu Zhao Jeong-Hyeon Choi Ahmet Alptekin Chunhong Yan Zheng Dong Shuang Huang Liqun Yang Hongjuan Cui 查运红 Han-Fei Ding | 2017 | 科学新闻2017，19，4： | 0 |
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