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1144篇 您的检索式:作者名="Ullrich"
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1Tetraphenylethylene-BODIPY aggregation-induced emission luminogens for near-infrared polymer light-emitting diodes显示文摘The aggregation-induced emission(AIE) phenomenon provides a new direction for the development of organic light-emitting devices. Here, we present a new class of emitters based on 4,4-difluoro-4-bora-3 a,4 a-diaza-s-indacene(BODIPY), functionalized at different positions with tetraphenylethylene(TPE), which is one of the most famous AIE luminogens. Thanks to this modification, we were able to tune the photoluminescence of the BODIPY moiety from the green to the near-infrared(NIR)spectral range and achieve PL efficiencies of ~50% in the solid state. Remarkably, we observed an enhancement of the AIE and up to ~100% photoluminescence efficiencies by blending the TPE-substituted BODIPY fluorophores with a poly[(9,9-di-noctylfluorene-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,7-diyl)](F8 BT) matrix. By incorporating these blends in organic lightemitting diodes(OLEDs), we obtained electroluminescence peaked in the range 650–700 nm with up to 1.8% external quantum efficiency and ~2 m W/cm2 radiance, a remarkable result for red/NIR emitting and solution-processed OLEDs.Sebnem Baysec Alessandro Minotto Patrick Klein Simone Poddi Andrea Zampetti Sybille Allard Franco Cacialli Ullrich Scherf 2018Science China Chemistry2018,61,8:6
2The role of mechanotransduction versus hypoxia during simulated orthodontic compressive strain——an in vitro study of human periodontal ligament fibroblasts显示文摘During orthodontic tooth movement(OTM)mechanical forces trigger pseudo-inflammatory,osteoclastogenic and remodelling processes in the periodontal ligament(PDL)that are mediated by PDL fibroblasts via the expression of various signalling molecules.Thus far,it is unknown whether these processes are mainly induced by mechanical cellular deformation(mechanotransduction)or by concomitant hypoxic conditions via the compression of periodontal blood vessels.Human primary PDL fibroblasts were randomly seeded in conventional six-well cell culture plates with O2-impermeable polystyrene membranes and in special plates with gas-permeable membranes(Lumox?,Sarstedt),enabling the experimental separation of mechanotransducive and hypoxic effects that occur concomitantly during OTM.To simulate physiological orthodontic compressive forces,PDL fibroblasts were stimulated mechanically at 2 g·cm?2 for 48 h after 24 h of pre-incubation.We quantified the cell viability by MTT assay,gene expression by quantitative real-time polymerase chain reaction(RT-qPCR)and protein expression by western blot/enzyme-linked immunosorbent assays(ELISA).In addition,PDL-fibroblast-mediated osteoclastogenesis(TRAP+cells)was measured in a 72-h coculture with RAW264.7 cells.The expression of HIF-1α,COX-2,PGE2,VEGF,COL1A2,collagen and ALPL,and the RANKL/OPG ratios at the mRNA/protein levels during PDL-fibroblast-mediated osteoclastogenesis were significantly elevated by mechanical loading irrespective of the oxygen supply,whereas hypoxic conditions had no significant additional effects.The cellular–molecular mediation of OTM by PDL fibroblasts via the expression of various signalling molecules is expected to be predominantly controlled by the application of force(mechanotransduction),whereas hypoxic effects seem to play only a minor role.In the context of OTM,the hypoxic marker HIF-1αdoes not appear to be primarily stabilized by a reduced O2 supply but is rather stabilised mechanically.Niklas Ullrich Agnes Schroder Jonathan Jantsch Gerrit Spanier Peter Proff Christian Kirschneck 2019International Journal of Oral Science2019,11,4:5
3睾丸主要血管或睾丸网旁取精点与取精成功率不具显著相关性:以220例非梗阻性无精子症患者行传统或显微睾丸取精术为例显示文摘采用传统与显微睾丸取精术相结合方式对220例梗阻性无精症患者行精子提取术,如果传统手术方式未见精子即为阴性取精位点,然后选取2—3个阴性取精位点行显微睾丸取精术。术中通过手术显微镜评价睾丸血管系统,同时记录阳性取精位点与睾丸血供的关系。总的精子获取率为58-2%,早期应用传统手术方式精子获取率为46.8%,而后行显微睾丸取精术则精子获取率增加11.7%。故显微睾丸取精术的应用可显著增加精子获取率(P=0.017),且在睾丸网或睾丸主要血管处并不能显著增加阳性取精位点。J Ullrich Schwarzer Heiko Steinfatt Heiko Steinfatt Manfred Schleyer Frank M Kōhn Klaus Fiedler2, Irene von Hertwig Gottfried Krüsmann Wolfgang Würfel 2013Asian Journal of Andrology2013,15,6:5
4Mercury in the Aquatic Environment: A Review of Factors Affecting Methylation显示文摘Susanne M. Ullrich Trevor W. Tanton Svetlana A. Abdrashitova 2001Critical Reviews in Environmental Science and Technology2001,,3:3
5Development of new electromagnetic suspension-based high-speed Maglev vehicles in China:Historical and recent progress in the field of dynamical simulation显示文摘High-speed Maglev is a cutting-edge technology brought back into the focus of research by plans of the Chinese government for the development of a new 600 km/h Maglev train.A Chinese‐German cooperation with industrial and academic partners has been established to pursue this ambitious goal and bring together experts from multiple disciplines.This contribution presents the joint work and achievements of CRRC Qingdao Sifang,thyssenkrupp Transrapid,CDFEB,and the ITM of the University of Stuttgart,regarding research and development in the field of high‐speed Maglev systems.Furthermore,an overview is given of the historical development of the Transrapid in Germany,the associated development of dynamical simulation models,and recent developments regarding high-speed Maglev trains in China.Sansan Ding Peter Eberhard Georg Schneider Patrick Schmid Arnim Kargl Yong Cui Ullrich Martin Xin Liang Chao Huang Markus Bauer Florian Dignath Qinghua Zheng 2023International Journal of Mechanical System Dynamics2023,3,2:3
6Preoperative chemoradiotherapy and postoperative chemotherapy with fluorouracil and oxaliplatin versus fluorouracil alone in locally advanced rectal cancer: initial results of the German CAO/ARO/AIO-04 randomised phase 3 trial显示文摘Claus R?del Torsten Liersch Heinz Becker Rainer Fietkau Werner Hohenberger Torsten Hothorn Ullrich Graeven Dirk Arnold Marga Lang-Welzenbach Hans-Rudolf Raab Heiko Sülberg Christian Wittekind Sergej Potapov Ludger Staib Clemens Hess Karin Weigang-K?hler G 2012Lancet Oncology2012,,7:2
7Lean body mass, physical activity and quality of life in paediatric patients with inflammatory bowel disease and in healthy controls显示文摘Katharina J. Werkstetter Jennifer Ullrich Stephanie B. Schatz Christine Prell Berthold Koletzko Sibylle Koletzko 2011Journal of Crohn’s and Colitis2011,,6:2
8Barley for food: Characteristics, improvement, and renewed interest显示文摘Byung-Kee Baik Steven E. Ullrich 2008Journal of Cereal Science2008,,2:2
9Signal transduction by receptors with tyrosinekinaseactivity 显示文摘Ullrich A Schlessinger J 1990Cell1990,61,2:1
10Comparison of fovealthickness measured with the retinal thickness analyzer and opticalcoherence tomography显示文摘Neubauer AS Priglinger S Ullrich S 2001Retina2001,21,6:1
11Incidence of gastric B-cell lymphomas: a population-based study in Germany显示文摘Ullrich A Fischbach W Blettner M 2002Ann Oncol2002,13,7:1
12A modified two-component regulatory system is involved in temperature-dependent biosynthesis of the Pseudomonas syringae phytotoxin coronatine显示文摘Ullrich M Pealoza-Vázquez A Bailey AM 1995J Bacteriol1995,177,:1
13The white-rot fungus Cerrena unicolorstrain 137 produces two laecase iso- forms with different physico-chemical and catalytic proper- ties显示文摘Michniewicz A Ullrich R Ledakowicz S 2006Applied Microbiology and Biotechnology2006,69,:1
14Imaging of posterior cham- ber phakic intraocular lens by optical coherence tomography 显示文摘Beelunann M Ullrich S Thiel M J 2002J Cataract Refract Surg2002,28,2:1
15Oral tolerance induction in humans显示文摘Meyer T Ullrich R Zeitz M 2012Exp Mol Pathol2012,93,3:1
16Recoil-ion and electron momentum spectroscopy:reaction-microscopes显示文摘ULLRICH J MOSHAMMER R DORN A 2003Reports on Progress in Physics2003,66,9:1
17Cd^2+ effects on transmembrane electrical potential difference , respiration and membrane permeability of rice( Oryza sativa L) roots 显示文摘LLAMAS A ULLRICH C I SANZ A 2000Plant and Soil2000,219,:1
18Sex and diploidy in Armillaria mellea显示文摘Ullrich R C Anderson J B 1978Experimental Mycology1978,2,:1
19Relationships between European and North American biological species of Armillaria mellea 显示文摘Anderson J B Korhonen K Ullrich R C 1980Experimental Mycology1980,4,:1
20Growth factor signaling by receptor tyrosine kinases显示文摘Schlessinger J Ullrich A 1992Neuron1992,9,3:1
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