|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Application of polyurethane geocomposites to help maintain track geometry for high-speed ballasted railway tracks显示文摘There are many issues surrounding the performance of critical assets on high-speed ballasted railway lines.At assets like switch & crossings and bridge transitions high track forces can be produced resulting in higher ballast settlements and hence track misalignments.The latter result in higher track forces and hence more settlement,leading to the need for increased track maintenance to ensure comfort and safety.Current technologies for solving issues like ballast movement under high-speed loading regimes are limited.However,a technique that has been well used across the UK and now increasingly overseas to stabilise and reinforce ballasted railway tracks is the application of in-situ polyurethane polymers,termed XiTRACK.This paper discusses how this technique can be used to solve these types of long-standing issues and presents actual polymer application profiles at two typical critical sites,namely a junction and a transition onto concrete slab-track. | Peter Keith WOODWARD Abdellah EL KACIMI Omar LAGHROUCHE Gabriela MEDERO Meysam BANIMAHD | 2012 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2012，13，11： | 20 |
| 2 | Pancreatic endometrial cyst mimics mucinous cystic neoplasm of the pancreas显示文摘Pancreatic cysts include a variety of benign, premalignant, and malignant lesions. Endometrial cysts in the pancreas are exceedingly rare lesions that are difficult to diagnose pre-operatively. This report describes the findings in a 43-year-old patient with a recent episode of acute pancreatitis who presented with a large cyst in the tail of the pancreas. Imaging demonstrated a loculated pancreatic cyst, and cyst fluid aspiration revealed an elevated amylase and carcinoembryonic antigen. The patient experienced an interval worsening of abdominal pain, fatigue, diarrhea, and a 15-pound weight loss 3 mo after the initial episode of pancreatitis. With concern for a possible pre-malignant lesion, the patient underwent a laparoscopic distal pancreatectomy with splenectomy, which revealed a 16cm×12cm×4cm lesion. Final histopathology was consistent with an intra-pancreatic endometrial cyst. Here we discuss the overlapping imaging and laboratory features of pancreatic endometrial cysts and mucinous cystic neoplasms of the pancreas. | Michael A Mederos Nicole Villafane Sadhna Dhingra Carlos Farinas Amy Mc Elhany William E Fisher George Van Buren II | 2017 | World Journal of Gastroenterology2017，23，6： | 7 |
| 3 | Serum vitamin D and colonic vitamin D receptor in inflammatory bowel disease显示文摘AIM: To determine serum vitamin D levels and colonic vitamin D receptor(VDR) expression in inflammatory bowel disease(IBD) and non-IBD patients and correlate these with histopathology.METHODS: Puerto Rican IBD(n = 10) and non-IBD(n = 10) patients ≥ 21 years old scheduled for colonoscopy were recruited. Each patient completed a questionnaire and provided a serum sample and a colonic biopsy of normal-appearing mucosa. For IBD patients, an additional biopsy was collected from visually diseased mucosa. Serum vitamin D levels were measured by ultra-performance liquid chromatography and mass spectrometry. Hematoxylin and eosin stained tissue sections from colonic biopsies were classified histologically as normal or colitis(active/inactive), and scored for the degree of inflammation present(0-3, inactive/absent to severe). Tissue sections from colonic biopsies were also stained by immunohistochemistry for VDR, for which representative diagnostic areas were photographed and scored for staining intensity using a 4-point scale.RESULTS: The IBD cohort was significantly younger(40.40 ± 5.27, P < 0.05) than the non-IBD cohort(56.70 ± 1.64) with a higher prevalence of vitamin D deficiency(40% vs 20%, respectively) and insufficiency(70% vs 50%, respectively). Histologic inflammation was significantly higher in visually diseased mucosa from IBD patients(1.95 ± 0.25) than in normalappearing mucosa from control patients(0.25 ± 0.08, P < 0.01) and from IBD patients(0.65 ± 0.36, P < 0.05) and correlated inversely with VDR expression in visually diseased colonic tissue from IBD patients(r =-0.44, P < 0.05) and from IBD patients with Crohn's disease(r =-0.69, P < 0.05), but not in normal-appearing colonic tissue from control patients or IBD patients. Control and IBD patient serum vitamin D levels correlated positively with VDR expression in normal colon from control and IBD patients(r = 0.38, P < 0.05) and with patient age(r = 0.54, P < 0.01). CONCLUSION: Levels of serum vitamin D correlate positively with colonic VDR expression in visually normal mucosa whereas inflammation correlates negatively with colonic VDR expression in visually diseased mucosa in Puerto Rican patients. | Yamilka Abreu-Delgado Raymond A Isidro Esther A Torres Alexandra González Myrella L Cruz Angel A Isidro Carmen I González-Keelan Priscilla Medero Caroline B Appleyard | 2016 | World Journal of Gastroenterology2016，22，13： | 5 |
| 4 | Smooth surface reconstruction from noisy clouds显示文摘 | MEDEROS B VELHO L De FIGUEIREDO L H | 2004 | Journal of the Brazilian Computing Society2004，25，3： | 1 |
| 5 | ATP-sensitive potassium channels in capillaries isolated from guinea-pig heart显示文摘 | Schnitzler Michael Mederos Y Derst Christian Daut Jurgen | 2000 | The journal of physiology2000，525，2： | 1 |
| 6 | Review on criteria to ensure ideal behaviors in trickle-bed reactors显示文摘 | Mederos F S Ancheyta J Chen J W | | 0，，： | 1 |
| 7 | Increased vascular smooth muscle contractility in TRPC6-/- mice 显示文摘 | Dietrich A Mederos YSM Gollasch M | 2005 | Mol Cell Bioli2005，25，16： | 1 |
| 8 | Application of PCR-RFLP in the diagnosis of non-tuberculous mycobacteria 显示文摘 | Yzquierdo S S Mederos C L Diaz G A | 2007 | Rev Chilena Infectol2007，24，5： | 1 |
| 9 | N-linked pro- tein glycosylation is a major determinant for basal TRPC3 and TR- PC6 channel activity 显示文摘 | Dietrich A Mederos y Schnitzler M Emmel J | 2003 | J Biol Chem2003，278，47： | 1 |
| 10 | Phenol adsorption onto powdered and granular activated carbon, prepared from Eucalyptus wood显示文摘 | TANCREDI N MEDERO N M? LLER F | 2004 | J Colloid Interface Sci2004，279，： | 1 |
| 11 | AT1 receptors as mechanosensors显示文摘 | Mederos y SM Storch U Gudermann T | 2011 | Curr Opin Pharmacol2011，11，2： | 1 |
| 12 | Increased vascular smooth muscle contractility in TRPC6-/-mice显示文摘 | Dietrich A Mederos Y Schnitzler M | | 0，，： | 1 |
| 13 | Cir- culating endothelial progenitor cells and the risk of vascular e- vents after ischemic stroke显示文摘 | Marti- Fabregas J Delgado- Mederos R Crespo J | 2015 | PLoS One2015，10，12： | 1 |
| 14 | Activated carbon briquettes from biomass materials 显示文摘 | Amaya A Medero N Tancredi N | 2007 | Bioresource Technology2007，98，： | 1 |
| 15 | Medium-term results of the endourological management with bullon dilatation of the ureteropelvic Junction stenusis in infants 显示文摘 | Parente HemOndsz A Angulo Medero JM Romero Ruiz RM | 2009 | Actas Urol Esp2009，33，4： | 1 |
| 16 | Oedometer behavior of an artificial cemented highly collapsible Soil 显示文摘 | Medero G M Schnaid F Gehling W Y | 2009 | Journal of Geotechnical and Geoenvironmental Engineering ASCE2009，135，6： | 1 |
| 17 | Maintaining absolute clearances in ballasted railway tracks using in situ 3 - dimensional polyurethane GeoComposites 显示文摘 | Woodward P K Kennedy J Medero G | 2012 | Proceedings of the Institution of Mechanical Engineers Part F: Journal of Rail and Rapid Transit2012，226，3： | 1 |
| 18 | Increased vascular smooth muscle contractility in TRPC6-/- mice显示文摘 | Dietrich A Mederos Y Schnitzler M | | 0，，16： | 1 |
| 19 | Reducing railway track settlement using three - dimensional polyu- rethane polymer reinforcement of the ballast 显示文摘 | Kennedy J Woodward P K Medero G | 2013 | Con- struction and Building Materials2013，，44： | 1 |
| 20 | Effect of a protective ventilation strategy on mortality in the acute respiratory distress syndrome显示文摘 | Ameto MB Barbas CS Mederos DM | 1998 | N Engl J Med1998，338，6： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员