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| 1 | Endoscopic pancreatic sphincterotomy:indications,outcome,and a safe stentless technique显示文摘Endoscopicpancreaticsphincterotomy:indications,outcome,andasafestentlesstechniquericElton,MD,DouglasA.Howel,MD,WilisG.Parsons... | Eric Elton, MD, Douglas A. Howell, MD, Willis G. Parsons, MD, Tahir Qaseem, MD, Brian L. Hanson, MDPortland, MaineDivision of Gastroenterology, Maine Medical Center, Portland, Maine | 1998 | World Journal of Gastroenterology1998，4，3： | 16 |
| 2 | Computer Modeling: an Important Tool in Materials Processing显示文摘The development of techniques to control and use materials, especially metallic materials continues to play a key role in the technological advancement of modem day society. A variety of materials processes have been developed overtime, and are applied to design and fabricate products. Heat treatment of metallic materials has been the method of choice applied to improve mechanical properties such as strength, hardness, and toughness, as well as to improve the homogeneity of properties in materials such as corrosion resistance. The molt significant success stories in the application of materials processes involve the heat-treatment of steel. The reasons for this largely lie in the ease with which steel microstructures can be altered by controlled heating and cooling. The objective of computer modeling of materials processes is to maximize on the beneficial factors while keeping to a minimum the negating effects such as components distortion and residual stresses. Computer modeling is a powerful tool in achieving this objective in the sense that with it, the effect of parameters associated with materials processes can be analyzed systematically in order to optimize them before actual production begins. | L.L Meekisho, X Chen Portland State University, P0 Box 751, Portland, Oregon 97207 USA Automated Analysis Corporation, Peoria, IL USA | 2000 | Journal of Shanghai Jiaotong university(Science)2000，5，1： | 10 |
| 3 | Backward Propagation of Otoacoustic Emissions显示文摘Normal mammalian ears not only detect but also generate sounds. The ear-generated sounds, i.e., otoacoustic emissions (OAEs), can be measured in the external ear canal using a tiny sensitive microphone. In spite of wide applications of OAEs in diagnosis of hearing disorders and in studies of cochlear functions, the question of how the cochlea emits sounds remains unclear. The current dominating theory is that the OAE reaches the cochlear base through a backward traveling wave. However, recently published works, including experimental data on the spatial pattern of basilar membrane vibrations at the emission frequency, demonstrated only forward traveling waves and no signs of backward traveling waves. These new findings indicate that the cochlea emits sounds through cochlear fluids as compression waves rather than through the basilar membrane as backward traveling waves. This article reviews different mechanisms of the backward propagation of OAEs and summarizes recent experimental results. | HE Wenxuan,1, 2 REN Tianying,1, 21. Oregon Hearing Research Center, Department of Otolaryngology and Head & Neck Surgery, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, NRC04, Portland, Oregon 97239 USA 2. School of Medicine, Xi’an Jiaotong University, Xi’an, Shaanxi 710061 China | 2006 | Journal of Otology2006，1，1： | 4 |
| 4 | What dermatologists should know about digital imaging 显示文摘 | Douglas A Perednia MD Portland O | 1991 | J Am Acad Dermatol1991，25，1： | 1 |
| 5 | What dermatologists should know about digital imaging 显示文摘 | Douglas A Perednia M D Portland | 1991 | Am Aead Dermatol1991，25，1： | 1 |
| 6 | Injury to the intrapateUar branch of the saphenous nerve in anterior cruciate ligament reconstruction: comparison of horizontal versus vertical harvest site incisions 显示文摘 | Portland GH Martin D Keene G | 2005 | Arthroscopy2005，3，： | 1 |
| 7 | Characterization and tissue-specific expression of human GSK-3-binding proteins FRAT1 and FRAT2显示文摘 | Freemantle SJ Portland HB Ewings K | 2002 | Gene2002，291，： | 1 |
| 8 | Control of air content in concrete显示文摘 | Portland Cement Association | 1998 | Concrete Technology Today1998，，1： | 1 |
| 9 | Acute surgical management of Jones'fractures显示文摘 | Portland G Kelikian A Kodros S | 2003 | Foot Ankle Int2003，24，11： | 1 |
| 10 | 2001 Portland '@'d, es incen- tives for green roof implementation显示文摘 | Portland' s office of sustainability | 2001 | The green roof infrastruc- ture monitor2001，，1： | 1 |
| 11 | Negotiating the RNAi patent thicket 显示文摘 | Charlie Schmidt Portland Maine | 2007 | Nature Biotechnology2007，25，3： | 1 |
| 12 | Injury to the infrapatellar branch of the saphenous nerve in anterior cruciate ligament reconstruction : comparison of horizontal versus vertical harvest site incisions 显示文摘 | Portland GH Martin D Keene G | 2005 | Arthroscopy2005，21，3： | 1 |
| 13 | Injury to the intmpatellar branch of the saphenous nevere in anterior cruciate ligament reconstruction of horizontal versus vertical harvest site incisions显示文摘 | Portland GH Martin D Keene G | 2005 | Arthroscopy2005，21，3： | 1 |
| 14 | Acute surgical management of Jones' fractures显示文摘 | Portland G Kelikian A Kodros S | 2003 | Foot Ankle Int2003，24，11： | 1 |
| 15 | What dermatologists should know about digital imaging显示文摘 | Douglas A Perednia Portland Oregon | 1991 | J Am Acad Dermatol1991，25，1： | 1 |
| 16 | Characterization and tissue-specific expression of human GSK-3-binding proteins FRAT1 and FRAT2 显示文摘 | Freemantle SJ Portland HB Ewings K | 2002 | Gene2002，291，1： | 1 |
| 17 | Control of air content in concrete显示文摘 | Portland C A | 1998 | Concrete Technology Today1998，19，1： | 1 |
| 18 | Control of air content in concrete显示文摘 | Portland C A | 1998 | Concrete Technology Today1998，19，1： | 1 |
| 19 | Injury to the intrapatellar branch of the saphenous nerve in anterior eruciate ligament reconstruction : compari- son of horizontal versus vertical harvest site incisions 显示文摘 | PORTLAND GH MARTIN D KEENE G | 2005 | Arthroscopy2005，21，3： | 1 |
| 20 | Stiffness,viscosity,and upper-limb inertia about the glenohumeral abduction axis显示文摘 | Zhang L Q Portland G H Wang G | 2000 | Journal of Orthopedic Research2000，18，1： | 1 |
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