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| 1 | 帕劳国预应力连续箱梁长期下挠分析显示文摘帕劳共和国科罗尔岛-巴伦尔图阿普岛桥(简称KB桥)为主跨241 m的预应力混凝土箱梁,通车后KB桥发生长期下挠,严重影响其正常运营,最后垮塌,其教训值得反思。该桥于1977竣工,运营18年后挠度达到1.61 m,1996年对该桥进行了体外预应力加固,却在加固后3个月发生垮塌。挠度分析结果表明:传统的梁理论与三维空间分析相比,误差高达20%,且宽跨比越大,误差越大。三维有限元空间分析采用多种徐变收缩计算模型:美国ACI模型、日本JSCE模型、CEB-FIP模型和GL模型,其挠度计算值要比(18年后)实测值低50%~70%,预测的变形也与实测不符;预应力损失计算值为22%~24%,远低于实测值50%。唯一基于理论的B3模型,采用经验值参数计算得到预应力损失40%,18年后挠度计算值比实测值低42%。如果根据长期实测值调整输入参数,结果可与实际更符合。对于早期挠度及其预测,B3模型能够合理地考虑因截面厚度差异产生的收缩和干燥徐变的速率差异。此外,B3模型还可考虑温度差异和顶板可能发生的开裂。 | 叶华文 王力武 曲浩博 Bazant Z P Yu Q Li G H | 2017 | 中外公路2017，37，5： | 5 |
| 2 | 急性儿茶酚胺暴露引起可逆的无心脏细胞再生的心肌细胞损伤显示文摘儿茶酚胺增加心脏收缩力,但暴露于高浓度儿茶酚胺或长时间暴露可引起心脏损伤。最近的一项研究表明,小鼠单次皮下注射异丙肾上腺素(isoproterenol,ISO;200 mg/kg)导致急性心肌细胞死亡(8%-10%),但在1个月之内心脏完整修复。心脏再生是通过内源性原癌基因蛋白质cKit+心脏干细胞介导新的心肌细胞形成。 | 刘莉 叶鹏 Wallner M Duran JM Mohsin S Troupes CD Vanhoutte D Borghetti G Vagnozzi RJ Gross P Yu D Trappanese DM Kubo H Toib A Sharp TE Harper SC Volkert MA Starosta T Feldsott EA Berretta RM Wang T Barbe MF Molkentin JD Houser SR | 2016 | 中华高血压杂志2016，24，8： | 4 |
| 3 | Preparation of stable micropatterns of gold on cell-adhesion-resistant hydrogels assisted by a hetero-bifunctional macromonomer linker显示文摘Surface patterning is very useful in biomaterial studies, yet it is not easy to prepare a micropattern with cell-adhesion contrast that is stable in a wet environment. Recently, a platform technique of transfer photolithography was invented to fabricate stable metal microarrays on the surface of a cell-adhesion resistant and mechanically biomimetic poly(ethylene glycol) hydrogel; the linker is the key chemical in such a transfer strategy. This article reports the design and synthesis of a hetero-bifunctional macromonomer linker with a thiol group at one end and an acryloyl group at the other end. The bifunctional linker was characterized by GPC and 1H NMR, and the average number of thiol groups in the bifunctional linker was detected by Ellman's reagent. The regent stability under wet conditions was also confirmed by the model reactants. The resultant micropatterned surfaces are meaningful for future studies of cell behaviors on mechanically biomimetic matrixes. | SUN JianGuo GRAETER Stefan V TANG Jian HUANG JingHuan LIU Peng LAI YuXiao YU Lin MAJER Günter SPATZ Joachim P DING JianDong | 2014 | Science China Chemistry2014，57，4： | 2 |
| 4 | Measurement of piezoelectrically induced charge in GaN/A1GaN heterostructure field - effect transistors 显示文摘 | Yu E T Sullivan G J Asbeck P M | 1997 | Appl Phys Lett1997，71，19： | 1 |
| 5 | The tests of chromium-nickel-base steels, used in magnesiumthermal production of spongy titan 显示文摘 | Terekhova L G Yatsenko A P Kalkeev Yu M | 2005 | Metallurgi Cheskaya i Gornorudnya Promyshle-nnost2005，19，7： | 1 |
| 6 | Characterization of extracellular polymeric substances of aerobic and anaerobic sludge using three- dimensional excitation and emission matrix fluorescence spectroscopy 显示文摘 | Sheng G P Yu H Q | 2006 | Water Research2006，40，6： | 1 |
| 7 | A gold electrode modified with self-assembled diethylenetri- aminepentaacetic acid via charge-based discrimination显示文摘 | Li J P Liu R Yu J G | 2009 | Analytical scienes2009，25，12： | 1 |
| 8 | Mechanical prope- rties of TiN thin film coatings on 304 stainless steel substrates显示文摘 | CHOU W J YU G P HUANG J H | 2002 | Serface and Coatings Technology2002，，149： | 1 |
| 9 | Optical intensity modulators for digital and analog applications 显示文摘 | Li G L Yu P K | 2003 | Journal of Lightwave Technology2003，21，9： | 1 |
| 10 | Effect of substrate temperature on structural,electrical and optial properties of Al-N co-doped ZnO thin films显示文摘 | YUAN G D ZHU L P YU Z Z | 2005 | Thin Solid Films2005，，484： | 1 |
| 11 | Structure and function of glucose-6-phosphate dehydrogenase-deficient variants in Chinese population显示文摘 | JIANG W YU G LIU P | 2006 | Hum Genet2006，119，5： | 1 |
| 12 | Synthesis and catalytic properties of hierarchical micro/mesoporous materials based on FER zeolite 显示文摘 | Khitev Yu P Kolyagin Yu G Ivanova I I | 2011 | Microporous Mesoporous Mater2011，146，13： | 1 |
| 13 | Microstructure,chemical and tribological investigations of MoxW1-xSy co-sputtered composite films显示文摘 | YIN G L HUANG P H YU Z HE D N TU J P | 2006 | Tribology Letters2006，22，1： | 1 |
| 14 | Data mining:how research meets practical development显示文摘 | Wu X Yu P S Piatetsky-Shapiro G | 2003 | Knowledge and Information Systems2003，5，2： | 1 |
| 15 | Room-temperature Ultraviolet Laser Emission from Selfassembled ZnO Microcrystallite Thin Films 显示文摘 | Tang Z K Wong G K L Yu P | 1998 | Appl Phys Lett1998，72，25： | 1 |
| 16 | Curcumin protects brain from oxida- tive stress through inducing expression of UCP2 in chronic cere- bral hypoperfusion aging-rats 显示文摘 | Liu L Zhang P Li Y Yu G | 2012 | Mol Neurodegener2012，7，1： | 1 |
| 17 | Hopf bifurcation control using nonlinear feedback with polynomial functions 显示文摘 | Yu P Chen G R | 2004 | International Journal of Bifurcation and Chaos2004，14，5： | 1 |
| 18 | A study on the seismic performance of steel-reinforced concrete frame concrete core wall high-rise mixed structure by large-scale shaking table tests and numerical simulations 显示文摘 | XU Z G YU P F XIAO C Z | 2013 | Earthquake Engineering and Structural Dynamic2013，42，13： | 1 |
| 19 | Improved control of postharvest blue mold rot in pear fruit by a combination of Cryptococcus laurentii and gibberellic acid 显示文摘 | Yu T Wu P G Qi J J | 2006 | Biological Control2006，39，： | 1 |
| 20 | Room-temperature Ultraviolet Laser Emission Self-assembled ZnO Microcrystallite Thin Films 显示文摘 | Tang Z K Wong G K L Yu P | 1998 | Appl Phys Lett1998，72，25： | 1 |
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