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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 | Quality control measures for lowering the seroconversion rate of hemodialysis patients with hepatitis B or C virus显示文摘BACKGROUND: Hemodialysis (HD) patients are at high risk of infection by hepatitis B virus (HBV) or hepatitis C virus (HCV). The present study was designed to determine the impact of quality control measures on the prevention of transmission of blood-borne viruses. METHODS: A total of 6182 adult maintenance HD patients from all HD units in Zhejiang Province were recruited on January 1, 2007. The baseline demographic and clinical characteristics were recorded and all patients were followed up until death or survival at 4 years later. The Quality Control Standards of Hemodialysis were gradually implemented in HD units. The HBV or HCV seroconversion rates of the recruited patients were calculated and compared every year during the observation period. RESULTS: The prevalence of HBV was 8.3% at the beginning of the study, and 6.6% for HCV. With the implementation of the HD quality control measures, the HBV seroconversion rate tended to decrease year by year (χ 2 =6.620, P=0.085), and the HCV seroconversion rate decreased significantly (χ 2 =10.41, P=0.015). Compared with the data in 2007, the HBV seroconversion rate (χ 2 =4.204, P=0.040, relative risk ratio 0.393, 95% CI 0.156-0.991) and the HCV seroconversion rate (χ 2 =7.373, P=0.007, relative risk ratio 0.386, 95% CI 0.189-0.787) decreased significantly in 2010. CONCLUSION: Quality control measures for HD decreased the seroconversion rates of HBV or HCV in HD patients, showing that updated quality control measures reduce the risk for transmission of blood-borne viruses in the HD population. | Jing Yuan,Yi Yang, Fei Han, Ping Zhang, Xiao-Ying Du, Hua Jiang and Jiang-Hua Chen The Kidney Disease Center, First Affiliated Hospital, Zhejiang University School of Medicine (Yuan J, Yang Y, Han F, Zhang P, Du XY, Jiang H and Chen JH) and Hemodialysis Quality Control Center of Zhejiang Province (Yuan J, Zhang P, Du XY and Chen JH), Hangzhou 310003, China | 2012 | Hepatobiliary & Pancreatic Diseases International2012，11，3： | 2 |
| 3 | Engrafted bone marrow-derived flk-(1+) mesenchymal stem cells regenerate skin tissue显示文摘 | Deng W Han Q Liao L Li C Ge W Zhao Z You S Deng H Murad F Zhao RC | 2006 | 中国生物学文摘2006，20，5： | 2 |
| 4 | A numerical study on the axial crushing response of hybrid puhruded and 45 braided tubes 显示文摘 | Han H Taheri F Pegg N | 2007 | Composite Structures2007，80，： | 1 |
| 5 | Effect of supplemental synthetic anaino acids to the low diels on the perfnrmanee of growing pigs显示文摘 | Jin C F Kim I H Han I K | 1998 | Asian Australas J Anita Sci1998，11，1： | 1 |
| 6 | Effects of supplemental synthetic amino acids to the low diets on the performance of growing pigs显示文摘 | JIN C F KIM I H HAN K | 1999 | Asian-Aus J Anim Sci1999，11，： | 1 |
| 7 | Greatly improved neuro- protective efficiency of citicoline by stereotactic delivery in treatment of ischemic injury显示文摘 | Xu F Han H Yan J | 2011 | Drug Deliv2011，18，7： | 1 |
| 8 | Microwave-assisted one pot synthesis of water-soluble rare earth doped fluoride luminescent nanoparti cles with tunahle colors显示文摘 | Mi C C Tian Z H Han B F | 2012 | J Alloy Compd2012，525，15： | 1 |
| 9 | A critical study on the adsorption of heterocyclic sulfur and nitrogen compounds by activated carbon: Equilibrium, kinetics and thermodynamics显示文摘 | WEN J HAN X LIN H F ZHENG Y CHU W | 2010 | Chem Eng J2010，164，1： | 1 |
| 10 | Performance of reinforced concrete shear walls with steel reinforced concrete boundary columns显示文摘 | Liao F Y Han L H Tao Z | 2012 | Engineering Structures2012，44，： | 1 |
| 11 | A new sphincter-preserving operation for low rectal cancer:ultralow anterior resection and colorectal/coloanal anastomosis by supporting bundling-up method显示文摘 | Han F Li H Zheng D | 2010 | Int J Colorectal Dis2010，25，7： | 1 |
| 12 | Integral Boundary Value Problems for First Order Integro-Differential Equations with ImpulsiveIntegral Conditions 显示文摘 | Liu Z H Han J F Fang L J | 2011 | Computers and Mathematics with Applications2011，61，10： | 1 |
| 13 | 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 |
| 14 | Synthesis and research of CeO2- V2O5/ATP for selective catalytic reduction of NOx in flue gas at low temperature显示文摘 | Gu Y Han F Cang H | 2013 | Procedia Environmental Sciences2013，18，： | 1 |
| 15 | Molecular basis for the herbicide resistance of roundup ready crops显示文摘 | Todd F Han H J Healy-Fried M L Fischer M Schnbrunn E | 2006 | Proceedings of the National Academy of Sciences of the United States of America2006，，13： | 1 |
| 16 | 8-Hydroxyquinoline benzoates as highly sensitive fluorescent chemosensors for transition metal ions 显示文摘 | Zhang H Han L F Zachariasse K A | 2005 | Org Lett2005，7，19： | 1 |
| 17 | Removal of cesium from simulated liquid waste with countercurrent two-stage adsorption followed by microfiltration 显示文摘 | Han F Zhang G H Gu P | 2012 | J Hazard Mat2012，，30： | 1 |
| 18 | Continuous biohydrogen production in a CSTR using starch as a substrate 显示文摘 | Shin H S Arooj M F Han S K | 2008 | International Journal of Hydrogen Energy2008，33，13： | 1 |
| 19 | Distribution and pathogenicity of bacteria species carried by Bursaphelenchus xylophilus in China显示文摘 | Zhao B G Wang H L Han S F | 2003 | Nematology2003，5，6： | 1 |
| 20 | High-efficiency-sensitized solar cell with a novel co-adsorbent显示文摘 | Han L Y Islam A Chen H Malapaka C Chiranjeevi B Zhang S F Yang X D Yanagida M | | 0，，03： | 1 |
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