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82篇 您的检索式:作者名="Markus Werner"
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1On the combined effect of soil fertility and topography on tree growth in subtropical forest ecosystems—a study from SE China显示文摘Aims The aim of our research was to understand small-scale effects of topography and soil fertility on tree growth in a forest biodiversity and ecosystem functioning(BEF)experiment in subtropical SE China.Methods Geomorphometric terrain analyses were carried out at a spatial resolution of 5×5 m.Soil samples of different depth increments and data on tree height were collected from a total of 566 plots(667 m2 each).The soils were analyzed for carbon(soil organic carbon[SOC]),nitrogen,acidity,cation exchange capacity(CEC),exchangeable cations and base saturation as soil fertility attributes.All plots were classified into geomorphological units.Analyses of variance and linear regressions were applied to all terrain,soil fertility and tree growth attributes.Important Findings In general,young and shallow soils and relatively small differences in stable soil properties suggest that soil erosion has truncated the soils to a large extent over the whole area of the experiment.This explains the concurrently increasing CEC and SOC stocks downslope,in hollows and in valleys.However,colluvial,carbon-rich sediments are missing widely due to the convexity of the footslopes caused by uplift and removal of eroded sediments by adjacent waterways.The results showed that soil fertility is mainly influenced by topography.Monte-Carlo flow accumulation(MCCA),curvature,slope and aspect significantly affected soil fertility.Furthermore,soil fertility was affected by the different geomorphological positions on the experimental sites with ridge and spur positions showing lower exchangeable base cation contents,especially potassium(K),due to leaching.This geomorphological effect of soil fertility is most pronounced in the topsoil and decreases when considering the subsoil down to 50 cm depth.Few soil fertility attributes affect tree height after 1-2 years of growth,among which C stocks proved to be most important while pH_(KCl)and CEC only played minor roles.Nevertheless,soil acidity and a high proportion of Al on the exchange complex affected tree height even after only 1-2 years growth.Hence,our study showed that forest nutrition is coupled to a recycling of litter nutrients,and does not only depend on subsequent supply of nutrients from the mineral soil.Besides soil fertility,topography affected tree height.We found that especially MCCA as indicator of water availability affected tree growth at small-scale,as well as aspect.Overall,our synthesis on the interrelation between fertility,topography and tree growth in a subtropical forest ecosystem in SE China showed that topographic heterogeneity lead to ecological gradients across geomorphological positions.In this respect,small-scale soil-plant interactions in a young forest can serve as a driver for the future development of vegetation and biodiversity control on soil fertility.In addition,it shows that terrain attributes should be accounted for in ecological research.Thomas Scholten Philipp Goebes Peter Kühn Steffen Seitz Thorsten Assmann Jürgen Bauhus Helge Bruelheide Francois Buscot Alexandra Erfmeier Markus Fischer Werner Härdtle Jin-Sheng He Keping Ma Pascal A.Niklaus Michael Scherer-Lorenzen Bernhard Schmid Xuezheng Shi Zhengshan Song Goddert von Oheimb Christian Wirth Tesfaye Wubet Karsten Schmidt 2017Journal of Plant Ecology2017,10,1:22
2Capecitabine and irinotecan with and without bevacizumab for advanced colorectal cancer patients显示文摘AIM:To investigate the efficacy and safety of capecitabine plus irinotecan±bevacizumab in advanced or metastatic colorectal cancer patients. METHODS:Forty six patients with previously untreated,locally-advanced or metastatic colorectal cancer(mCRC) were recruited between 2001-2006 in a prospective open-label phaseⅡtrial,in German community-based outpatient clinics.Patients received a standard capecitabine plus irinotecan(CAPIRI) or CAPIRI plus bevacizumab(CAPIRI-BEV) regimen every 3 wk. Dose reductions were mandatory from the first cycle in cases of>grade 2 toxicity.The treatment choice of bevacizumab was at the discretion of the physician.Theprimary endpoints were response and toxicity and secondary endpoints included progression-free survival and overall survival. RESULTS:In the CAPIRI group vs the CAPRI-Bev group there were more female than male patients(47% vs 24%) ,and more patients had colon as the primary tumor site(58.8%vs 48.2%) with fewer patients having sigmoid colon as primary tumor site(5.9%vs 20.7%) .Grade 3/4 toxicity was higher with CAPIRI than CAPIRI-Bev:82%vs 58.6%.Partial response rates were 29.4%and 34.5%,and tumor control rates were 70.6%and 75.9%,respectively.No complete responses were observed.The median progression-free survival was 11.4 mo and 12.8 mo for CAPIRI and CAPIRI-Bev,respectively.The median overall survival for CAPIRI was 15 mo(458 d) and for CAPIRI-Bev 24 mo(733 d) .These differences were not statistically different.In the CAPIRI-Bev,group,two patients underwent a full secondary tumor resection after treatment,whereas in the CAPIRI group no cases underwent this procedure. CONCLUSION:Both regimens were well tolerated and offered effective tumor growth control in this outpatient setting.Severe gastrointestinal toxicities and thromboembolic events were rare and if observed were never fatal.Markus Moehler Martin F Sprinzl Murad Abdelfattah Carl C Schimanski Bernd Adami Werner Godderz Klaus Majer Dimitri Flieger Andreas Teufel Juergen Siebler Thomas Hoehler Peter R Galle Stephan Kanzler 2009World Journal of Gastroenterology2009,15,4:10
3Noninvasive indocyanine green plasma disappearance rate predicts early complications,graft failure or death after liver transplantation显示文摘BACKGROUND:Early detection of graft malfunction or postoperative complications is essential to save patients and organs after orthotopic liver transplantation (OLT).Predictive tests for graft dysfunction are needed to enable earlier implementation of organ-saving interventions following transplantation.This study was undertaken to assess the value of indocyanine green plasma disappearance rates (ICG-PDRs) for predicting postoperative complications,graft dysfunction and patient survival following OLT.METHODS:Eighty-six patients undergoing OLT were included in this single-centre trial.ICG-PDR was assessed daily for the first 7 days following OLT.Endpoints were graft loss or death within 30 days and postoperative complications,graft loss,or death within 30 days.RESULTS:Postoperative complications of 31 patients included deaths (12 patients) or graft losses.ICG-PDR was significantly different in patients whose endpoints were graft loss or death beginning from day 3 and in those whose endpoints were graft loss,death,or postoperative complications beginning from day 4 after OLT.For day 7 measurements,receiver operating characteristic curve analysis revealed an ICG-PDR cut-off for predicting death or graft loss of 9.6% per min (a sensitivity of 75.0%,a specificity of 72.6%,positive predictive value 0.35 negative predictive value 0.94).For prediction of graft loss,death or postoperative complications,the ICG-PDR cut-off was 12.3%per min (a sensitivity of 68.9%,a specificity of 66.7%,positive predictive value 0.57,negative predictive value 0.77).CONCLUSIONS:ICG-PDR measurements on postoperative day 7 are predictive of early patient outcomes following OLT.The added value over that of routinely determined laboratory parameters is low.Lutz Schneider Martin Spiegel Sebastian Latanowicz Markus A Weigand Jan Schmidt Jens Werner Wolfgang Stremmel Christoph Eisenbach 2011Hepatobiliary & Pancreatic Diseases International2011,10,4:6
4Pancreatic Cancer Surgery in the New Millennium: Better Prediction of Outcome显示文摘Werner Hartwig Thilo Hackert Ulf Hinz Alexander Gluth Frank Bergmann Oliver Strobel Markus W. Büchler Jens Werner 2011Annals of Surgery2011,,2:5
5Arterial Resection During Pancreatectomy for Pancreatic Cancer: A Systematic Review and Meta-Analysis显示文摘Nathan Mollberg Nuh N. Rahbari Moritz Koch Werner Hartwig Yumiko Hoeger Markus W. Büchler Jürgen Weitz 2011Annals of Surgery2011,,6:5
6多种径向高压密封材料的性能测试与比较显示文摘采用间隙挤出实验和磨损实验,研究了几种高压转轴密封材料的抗间隙挤出性能和抗磨损性能。结果表明:PTFE复合材料的抗间隙挤出和抗变形性能较差,而聚酮和聚氨酯材料的较好;聚酮、超高分子聚乙烯、PTFE复合材料以及聚氨酯的耐磨性能均较好,但PTFE复合材料(PTFE聚合物复合材料除外),尤其是含青铜的PTFE复合材料,对相对旋转面的损伤严重;比较的几种密封材料中,超高分子聚乙烯具有最低的摩擦因数,但其耐高温能力最弱;聚氨酯的摩擦因数与PTFE复合材料处于同一级别。Markus Henzler Werner Haas 沈洁 2010润滑与密封2010,35,1:4
7Small (Sendai Negative) Branch-Duct IPMNs: Not Harmless显示文摘Stefan Fritz Miriam Klauss Frank Bergmann Thilo Hackert Werner Hartwig Oliver Strobel Bogata D. Bundy Markus W. Büchler Jens Werner 2012Annals of Surgery2012,,2:3
8Management of infection in acute pancreatitis显示文摘Werner Hartwig Jens Werner Waldemar Uhl Markus W. Büchler 2002Journal of Hepato - Biliary - Pancreatic Surgery2002,,4:3
9Anaplastic pancreatic cancer: Presentation, surgical management, and outcome显示文摘Oliver Strobel Werner Hartwig Frank Bergmann Ulf Hinz Thilo Hackert Lars Grenacher Lutz Schneider Stefan Fritz Matthias M. Gaida Markus W. Büchler Jens Werner 2011Surgery2011,,2:2
10Bacterial translocation and infected pancreatic necrosis in acute necrotizing pancreatitis derives from small bowel rather than from colon显示文摘Stefan Fritz Thilo Hackert Werner Hartwig Florian Rossmanith Oliver Strobel Lutz Schneider Katja Will-Schweiger Mechthild Kommerell Markus W. Büchler Jens Werner 2010The American Journal of Surgery2010,,1:2
11Cachexia but not obesity worsens the postoperative outcome after pancreatoduodenectomy in pancreatic cancer显示文摘Thomas Pausch Werner Hartwig Ulf Hinz Thomas Swolana Bogota D. Bundy Thilo Hackert Lars Grenacher Markus W. Büchler Jens Werner 2012Surgery2012,,3:2
12Definition and grading of anastomotic leakage following anterior resection of the rectum: A proposal by the International Study Group of Rectal Cancer显示文摘Nuh N. Rahbari Jürgen Weitz Werner Hohenberger Richard J. Heald Brendan Moran Alexis Ulrich Torbj?rn Holm W. Douglas Wong Emmanuel Tiret Yoshihiro Moriya S?ren Laurberg Marcel den Dulk Cornelis van de Velde Markus W. Büchler 2010Surgery2010,,3:1
13Complement and Neutrophil Function Changes After Liver Resection in Humans显示文摘Christoph Werner Strey Britta Siegmund Saskia Rosenblum Rosa Maria Marquez-Pinilla Elsie Oppermann Markus Huber-Lang John D. Lambris Wolf O. Bechstein 2009World Journal of Surgery2009,,12:1
14A dynamic routing concept for ATM-based satellite personal communication networks显示文摘Markus Werner 1997IEEE Journal on Selected Areas in Communications1997,15,8:1
15CT and endoscopic ultrasound in comparison to endoluminal MRI—Preliminary results in staging gastric carcinoma显示文摘Tobias Heye Christian Kuntz Markus Düx Jens Encke Moritz Palmowski Frank Autschbach Frank Volke Guenter Werner Kauffmann Lars Grenacher 2008European Journal of Radiology2008,,2:1
16Clinical trials of agents that reverse multidrug resistance显示文摘 Werner S 1993Cancer1993,72,12:1
17Low toxic neoadjuvant cisplatin, 5-fluorouracil and folinic acid in locally advanced gastric cancer yields high R-0 resection rate显示文摘Markus Menges Carsten Schmidt Werner Lindemann Karsten Ridwelski Werner Pueschel Bernhard Jüngling Gernot Feifel Martin Schilling Andreas Stallmach Martin Zeitz 2003Journal of Cancer Research and Clinical Oncology2003,,7:1
18Decrease in clinically relevant pancreatic fistula by coverage of the pancreatic remnant after distal pancreatectomy显示文摘Matthias Hassenpflug Werner Hartwig Oliver Strobel Ulf Hinz Thilo Hackert Stefan Fritz Markus W. Büchler Jens Werner 2012Surgery2012,,3:1
19Postoperative pancreatic fistula显示文摘Thilo Hackert Jens Werner Markus W. Büchler 2010The Surgeon2010,,4:1
20Multivisceral Resection for Pancreatic Malignancies: Risk-Analysis and Long-Term Outcome显示文摘Werner Hartwig Thilo Hackert Ulf Hinz Matthias Hassenpflug Oliver Strobel Markus W. Büchler Jens Werner 2009Annals of Surgery2009,,:1
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