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| 1 | Cellulose structure and lignin distribution in normal and compression wood of the Maidenhair tree(Ginkgo biloba L.)显示文摘We studied in detail the mean micro fibril angle and the width of cellulose crystals from the pith to the bark of a 15-year-old Maidenhair tree(Ginkgo biloba L.). The orientation of cellulose micro fibrils with respect to the cell axis and the width and length of cellulose crystallites were determined using Xray diffraction. Raman microscopy was used to compare the lignin distribution in the cell wall of normal/opposite and compression wood, which was found near the pith. Ginkgo biloba showed a relatively large mean micro fibril angle,varying between 19° and 39° in the S2 layer, and the average width of cellulose crystallites was 3.1–3.2 nm. Mild compression wood without any intercellular spaces or helical cavities was observed near the pith. Slit-like bordered pit openings and a heavily lignified S2 L layer con firmed the presence of compression wood. Ginkgo biloba showed typical features present in the juvenile wood of conifers. The micro fibril angle remained large over the 14 annual rings. The entire stem disc,with a diameter of 18 cm, was considered to consist of juvenile wood. The properties of juvenile and compression wood as well as the cellulose orientation and crystalline width indicate that the wood formation of G. biloba is similar to that of modern conifers. | Seppo Andersson Yurong Wang Raili P?nni Tuomas H?nninen Marko Mononen Haiqing Ren Ritva Serimaa Pekka Saranp?? | 2015 | Journal of Integrative Plant Biology2015，57，4： | 5 |
| 2 | ApoE基因对急性缺血性脑卒中的影响:磁共振成像研究显示文摘ApoEε4等位基因对急性缺血性脑卒中兼具危害和保护效应。ApoEε4等位基因的危害效应表现在梗死体积增加更多,脑组织损伤的血供阈值低,病人临床愈后与影像学发现不成比例。但是ApoEε4等位基因携带者有更完好的侧支循环。涉及ApoEε4等位基因和临床愈后的研究显示,危害和保护效应可能会相互抵消。在今后的缺血性脑卒中影像学和临床愈后研究中,ApoEε4等位基因干扰效应需要加以控制。 | 刘亚武 Pivi Hartikainen Ritva L.Vanninen | 2010 | 国际医学放射学杂志2010，33，5： | 2 |
| 3 | Functional Aspects of Membrane Association of Reggie/Flotillin Proteins显示文摘 | Antje Banning Ana Tomasovic Ritva Tikkanen | 2011 | Current Protein and Peptide Science2011，，8： | 1 |
| 4 | Outcomes of Early Endovascular Versus Surgical Treatment of Ruptured Cerebral Aneurysms: A Prospective Randomized Study显示文摘 | Timo Koivisto Ritva Vanninen Heleena Hurskainen Tapani Saari Juha Hernesniemi Matti Vapalahti | 2000 | Stroke: Journal of the American Heart Association2000，，10： | 1 |
| 5 | Layered synthetic microstructure technology considerations for the extreme ultraviolet显示文摘 | RITVA A M Keski-Kuha | 1984 | Appl Opt1984，23，20： | 1 |
| 6 | How often does an incomplete circle of Willis predispose to cerebral ischemia during closure of carotid artery? Postmortem and clinical imaging studies显示文摘 | Hannu Manninen Kimmo M?kinen Ritva Vanninen Antti Ronkainen Harri Tulla | 2009 | Acta Neurochirurgica2009，，9： | 1 |
| 7 | Risk of colorectal and other gastro-intestinal cancers after exposure to nitrate, nitrite and N-Nitroso Compounds: A Follow-up Study 显示文摘 | Paul Knekt Ritva Jarvinen Jan Dich | 1999 | IntJCancer1999，80，6： | 1 |
| 8 | Onyx, a New Liquid Embolic Material for Peripheral Interventions: Preliminary Experience in Aneurysm, Pseudoaneurysm, and Pulmonary Arteriovenous Malformation Embolization显示文摘 | Ritva L. Vanninen I. Manninen | 2007 | CardioVascular and Interventional Radiology2007，，2： | 1 |
| 9 | Flavonoids and other phenolic compounds in Andean indigenous grains:Quinoa(Chenopodium quinoa),ka觡iwa(Chenopodium pallidicaule)and kiwicha(Amaranthus caudatus)显示文摘 | Ritva Repo-Carrasco-Valencia Jarkko K Hellstr M B | 2010 | Food Chemistry2010，120，1： | 1 |
| 10 | Twenty-year fallow-up of metal-ceramic singlecrowns:a retrospective study显示文摘 | Ritva N Aune R | 2008 | Intemational Journal of Prosthodontics2008，17，： | 1 |
| 11 | Combined diffusion and pertusion MRI with correlation to single-photom emission CT in acute is chemic stroke显示文摘 | Jari O Karonen Ritva L Vanninen Yawu Liu | 1999 | Stroke1999，30，： | 1 |
| 12 | Preinvasive colorectal lesion transcriptomes correlate with endoscopic morphology (polypoid vs. nonpolypoid)显示文摘 | Elisa Cattaneo Endre Laczko Federico Buffoli Fausto Zorzi Maria Antonia Bianco Mirco Menigatti Zdena Bartosova Ritva Haider Birgit Helmchen Jacob Sabates‐Bellver Amit Tiwari Josef Jiricny Giancarlo Marra | 2011 | EMBO Mol Med2011，，6： | 1 |
| 13 | A collagen-binding S-Layer protein in Lactobacillus crispatus显示文摘 | Takahiro T Ritva V Benita W | 1995 | Appl Environ Microbiol1995，61，： | 1 |
| 14 | Differential expression of collagen typesⅩⅧ/endostatin and ⅩⅤ in normal,keratoconus,and scarred human corneas显示文摘 | Marko M Ritva H Raija S | 2006 | Cornea2006，25，3： | 1 |
| 15 | Carotid stenosis degree in CT angiography: assessment based on luminal area versus luminal diameter measurements显示文摘 | Zishu Zhang Marja Berg Aki Ikonen Mervi K?n?nen Reetta K?lvi?inen Hannu Manninen Ritva Vanninen | | 0，，： | 1 |
| 16 | Onyx, a New Liquid Embolic Material for Peripheral Interventions: Preliminary Experience in Aneurysm, Pseudoaneurysm, and Pulmonary Arteriovenous Malformation Embolization显示文摘 | Ritva L. Vanninen I. Manninen | 2007 | CardioVascular and Interventional Radiology2007，，2： | 1 |
| 17 | Computer-associated healtcomplaints and sources ofergonomic instructions in computer-related is- sues among finnish adolescents: Across-sectional study显示文摘 | PAULA TH LEA AS RITVA LK | 2010 | BMC Pub- lic Health2010，，10： | 1 |
| 18 | Human leucocyte antigen and TNFα polymorphism association in microscopic colitis显示文摘 | Ritva M. Koskela Tuomo J. Karttunen Seppo E. Niemel? Juhani K. Lehtola Jorma Ilonen Riitta A. Karttunen | 2008 | European Journal of Gastroenterology & Hepatology2008，，4： | 1 |
| 19 | Effect of resistance training regimens on treadmill running and neuromuscular performance in recreational endurance runners显示文摘 | Jussi Mikkola Ville Vesterinen Ritva Taipale Benoit Capostagno Keijo H?kkinen Ari Nummela | 2011 | Journal of Sports Sciences2011，，： | 1 |
| 20 | Diet, nu- trition, and cancer prevention: the postgenomic era 显示文摘 | VAY LIANG W G RITVA R B DEBRA A W | 2003 | J Nutr2003，133，11： | 1 |
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