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| 1 | 残余应力导致三层聚烯烃管道防腐层剥离与开裂显示文摘这是美国运输部发起的研究项目,一个管道防腐层专家团队参与了本研究项目,评价了三层聚烯烃管道外防腐涂层(3LPO)的完整性。研究表明,三层聚烯烃管道外防腐涂层(3LPO)存在剥离和面层开裂两大完整性问题。过去几年里,据文献报道,三层聚烯烃管道外防腐涂层(3LPO)的熔结环氧粉末(FBE)底漆与钢管界面上发生多起防腐层剥离事故,以及聚丙烯(PP)面层发生开裂事故。这些防腐层事故引起人们对使用三层聚烯烃管道外防腐涂层(3LPO)的关注。一般来讲,三层聚烯烃管道外防腐涂层(3LPO)采用比较厚的聚烯烃面层增强防腐层抗机械损伤和防止水渗透的能力。但是,聚烯烃的热膨胀系数比钢材高得多,结果在防腐层系统里产生比较高的残余热应力。因为残余应力高,造成防腐层剥离,尤其在管端截短防腐层和任何防腐层的边上,因为这些是高应力集中部位。特别是假如钢管表面预处理不当,就无法保证防腐层持久达到很强的粘合强度。如果熔结环氧粉末(FBE)底漆配方选择不当,发生热氧化降解,也导致防腐层过早失效。如果使用温度很高,聚丙烯也会因为热氧化降解而变脆。在残余应力下,这样脆性的聚丙烯面层就会开裂。本文分析了三层聚烯烃管道外防腐涂层(3LPO)中的残余应力,并且探讨了残余应力对三层聚烯烃管道外防腐涂层(3LPO)剥离和聚丙烯(PP)面层开裂机理的影响。 | B.T.A.Cheng S Hung-jue J Han D Wong A Kehr M Mallozzi F Aguirre H Pham W Snider 王向农(译) | 2011 | 防腐保温技术2011，19，3： | 3 |
| 2 | Computation of flow through the oesophagogastric junction显示文摘Whilst methods exist to indirectly measure the effects of increased flow or gastro-oesophageal refluxing, they cannot quantitatively measure the amount of acid travelling back up into the oesophagus during reflux, nor can they indicate the flow rate through the oesophagogastric junction (OGJ). Since OGJ dysfunction affects flow it seems most appropriate to describe the geometry of the OGJ and its effect on the flow. A device known as the functional lumen imaging probe (FLIP) has been shown to reliably measure the geometry of and pressure changes in the OGJ. FLIP cannot directly measure flow but the data gathered from the probe can be used to model flow through the junction by using computational flow dynamics (CFD). CFD uses a set of equations known as the Navier-Stokes equations to predict flow patterns and is a technique widely used in engineering. These equations are complex and require appropriate assumptions to provide simplifications before useful data can be obtained. With the assumption that the cross-sectional areas obtained via FLIP are circular, the radii of these circles can be obtained. A cubic interpolation scheme can then be applied to give a high-resolution geometry for the OGJ. In the case of modelling a reflux scenario, it can be seen that at the narrowest section a jet of fluid squirts into the oesophagus at a higher velocity than the fluid surrounding it. This jet has a maximum velocity of almost 2 ms-1 that occurs where the OGJ is at its narrowest. This simple prediction of acid ‘squirting’ into the oesophagusillustrates how the use of numerical methods can be used to develop a better understanding of the OGJ. This initial work using CFD shows some considerable promise for the future. | Barry P McMahon Karl D Odie Kenneth W Moloney Hans Gregersen | 2007 | World Journal of Gastroenterology2007，13，9： | 2 |
| 3 | High corrosion resistance of electroless composite plating coatings on AZ91D magnesium alloys 显示文摘 | SONG Y W SHAN D Y CHEN R S HAN E H | 2008 | Electrochimica Acta2008，53，： | 1 |
| 4 | Fe-Mn martensitic alloys for control of noise and vibration in engineering applications 显示文摘 | Balk S H Kim J C Han D W etal | 2006 | Materials Science and Engineering A2006，，： | 1 |
| 5 | Production by Aspegillus ficuum on semisolid substrate 显示文摘 | HAN Y W GALLAGHER D J WILFED A G | 1987 | Journal of Industrial Microbiology1987，2，： | 1 |
| 6 | A self-adaptive projection method with improved step-size for solving variational inequalities显示文摘 | Yan X H Han D R Sun W Y | 2008 | Computers Mathematics Applications2008，55，： | 1 |
| 7 | The effect of IL-10 genetic variation and interleukin 10 serum levels on Crohn's disease susceptibility in a New Zealand population显示文摘 | Wang A H Lam W J Han D Y | 2011 | Human Immunology2011，72，： | 1 |
| 8 | Phytotoxic and antimicrobial activity of volatile constituents of Artemisia princops var orientalis显示文摘 | Yun K W Kil B S Han D M | 1993 | J Chem Ecol1993，19，1： | 1 |
| 9 | Effect of gas bubbling and impeller agitation on degassing kinetics during magnesium alloy (AZ91D) melt recycling-water model approach 显示文摘 | Han J W Kim D J You B D | 2003 | Materials Science Forum2003，439，： | 1 |
| 10 | Design of high power permanent magnet motor with segment rectangular copper wire and closed slot opening on electric vehicles显示文摘 | Choi J H Chtm Y D Han P W | 2010 | IEEE Transactions on Magnetics2010，46，6： | 1 |
| 11 | Org lett using geminal dica- tionie ionic liquids as solvents for high - temperature or- ganic reactions 显示文摘 | HAN X ARMSTRANG D W | 2005 | Org Lett2005，7，19： | 1 |
| 12 | Heterotrimeric G proteins regulate nitrogen-use efficiency in rice 显示文摘 | Sun H Y Qian Q Wu K Luo J J Wang S S Zhang C W Ma Y F Liu Q Huang X Z Yuan Q B Han R X Zhao M Dong G J Guo L B Zhu X D Gou Z H Wang W Wu Y J Lin H X Fu X D | 2014 | Nature Genetics2014，46，4： | 1 |
| 13 | High-speed traveling-wave photodetector with a 3 d B bandwidth of 410 GHz显示文摘 | PARK J W HAN S LEE D | 2012 | Etri J2012，34，6： | 1 |
| 14 | CO2 utilization as an oxidant in the dehydrogenation of ethylbenzene to styrene over MnO2-ZrO2 catalysts显示文摘 | Burri D R Choi K W Han D | 2006 | Catalysis Today2006，115，14： | 1 |
| 15 | Phase II study and biomarker analysis of cetuximab combined with modified FOLFOX6 in advanced gastric cancer显示文摘 | HANS W OH D Y IM S A | 2009 | Br J Cancer2009，100，2： | 1 |
| 16 | The conservative and non-conservative behavior of chromophoric dissolved organic matter in Chinese estuarine waters 显示文摘 | Guo W D Stedmon C A Han Y C | 2007 | Mar Chem2007，107，： | 1 |
| 17 | Effects of vanadium addition on nucleation and growth of pearlite in high carbon steel 显示文摘 | Han K Mottishaw T D Smith G D W | 1994 | Mater Sci Technol1994，10，11： | 1 |
| 18 | Association of the CD14 gene polymorphism C-159T with allergic rhinitis显示文摘 | HAN D SHE W ZHANG L | 2010 | Am J Rhinol Allergy2010，24，： | 1 |
| 19 | Efficient rule-based attribute-oriented induction for data mining显示文摘 | Cheng D Hwang H Y Han J W | 2000 | Journal of Intelligent Information Systems2000，15，： | 1 |
| 20 | Ionic Liquids in Separations 显示文摘 | Han Xinxin Armstrong D W | 2007 | Acc Chem Res2007，40，11： | 1 |
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