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| 1 | Bifurcation and Chaos Analysis of Nonlinear Rotor System with Axial-grooved Gas-lubricated Journal Bearing Support显示文摘Axial-grooved gas-lubricated journal bearings have been widely applied to precision instrument due to their high accuracy, low friction, low noise and high stability. The rotor system with axial-grooved gas-lubricated journal bearing support is a typical nonlinear dynamic system. The nonlinear analysis measures have to be adopted to analyze the behaviors of the axial-grooved gas-lubricated journal bearing-rotor nonlinear system as the linear analysis measures fail. The bifurcation and chaos of nonlinear rotor system with three axial-grooved gas-lubricated journal bearing support are investigated by nonlinear dynamics theory. A time-dependent mathematical model is established to describe the pressure distribution in the axial-grooved compressible gas-lubricated journal bearing. The time-dependent compressible gas-lubricated Reynolds equation is solved by the differential transformation method. The gyroscopic effect of the rotor supported by gas-lubricated journal bearing with three axial grooves is taken into consideration in the model of the system, and the dynamic equation of motion is calculated by the modified Wilson-θ-based method. To analyze the unbalanced responses of the rotor system supported by finite length gas-lubricated journal bearings, such as bifurcation and chaos, the bifurcation diagram, the orbit diagram, the Poincaré map, the time series and the frequency spectrum are employed. The numerical results reveal that the nonlinear gas film forces have a significant influence on the stability of rotor system and there are the rich nonlinear phenomena, such as the periodic, period-doubling, quasi-periodic, period-4 and chaotic motion, and so on. The proposed models and numerical results can provide a theoretical direction to the design of axial-grooved gas-lubricated journal bearing-rotor system. | ZHANG Yongfang HEI Di Lü Yanjun WANG Quandai MüLLER Norbert | 2014 | Chinese Journal of Mechanical Engineering2014，27，2： | 9 |
| 2 | 注射成型工艺对PBT结晶和降解行为的影响显示文摘通过采用不同的注射条件,分别考察了熔体温度、模具温度、螺杆转速、注射速率、背压、保压压力、保压时间、滞留时间等多个重要的注射参数对聚对苯二甲酸丁二醇酯(PBT)小型制件降解程度、结晶形态和力学性能的影响。利用偏光显微镜、DSC、黏度计等,着重研究了各注射工艺参数对制件皮层厚度、结晶度、相对分子质量以及断裂伸长率的影响,从而为优化注射成型工艺过程提供依据。结果表明:熔体温度对制件各项性能的影响最为显著,而螺杆转速、背压、保压压力等的影响相对较小;随着熔体温度的提高和滞留时间的延长,PBT的降解程度迅速加剧,相对分子质量急剧下降,从而使制件断裂伸长率严重降低,力学性能变差。 | 尹兴昌 赵树高 张萍 Norbert Müller | 2005 | 中国塑料2005，19，4： | 9 |
| 3 | Collagen/hyaluronan based hydrogels releasing sulfated hyaluronan improve dermal wound healing in diabetic mice via reducing inflammatory macrophage activity显示文摘Sustained inflammation associated with dysregulated macrophage activation prevents tissue formation and healing of chronic wounds.Control of inflammation and immune cell functions thus represents a promising approach in the development of advanced therapeutic strategies.Here we describe immunomodulatory hyaluronan/collagen(HA-AC/coll)-based hydrogels containing high-sulfated hyaluronan(sHA)as immunoregulatory component for the modulation of inflammatory macrophage activities in disturbed wound healing.Solute sHA downregulates inflammatory activities of bone marrow-derived and tissue-resident macrophages in vitro.This further affects macrophage-mediated pro-inflammatory activation of skin cells as shown in skin ex-vivo cultures.In a mouse model of acute skin inflammation,intradermal injection of sHA downregulates the inflammatory processes in the skin.This is associated with the promotion of an anti-inflammatory gene signature in skin macrophages indicating a shift of their activation profile.For in vivo translation,we designed HA-AC/coll hydrogels allowing delivery of sHA into wounds over a period of at least one week.Their immunoregulatory capacity was analyzed in a translational experimental approach in skin wounds of diabetic db/db mice,an established model for disturbed wound healing.The sHA-releasing hydrogels improved defective tissue repair with reduced inflammation,augmented pro-regenerative macrophage activation,increased vascularization,and accelerated new tissue formation and wound closure. | Sophia Hauck Paula Zager Norbert Halfter Elke Wandel Marta Torregrossa Ainur Kakpenova Sandra Rother Michelle Ordieres Susann Räthel Albrecht Berg Stephanie Möller Matthias Schnabelrauch Jan C.Simon Vera Hintze Sandra Franz | 2021 | Bioactive Materials2021，6，12： | 7 |
| 4 | Analysis of monocyte chemotactic protein-1 gene polymorphism in patients with spontaneous bacterial peritonitis显示文摘AIM:To investigate a genetic polymorphism of the monocyte chemotactic protein-1 (MCP-1 ) gene in patients with spontaneous bacterial peritonitis (SBP).METHODS:MCP-1 genotyping was performed in 23 patients with SBP and 83 cirrhotic control patients with non-infected ascites.RESULTS:The frequency of carriers of the G-allele was lower in SBP patients but this difference did not reach statistical significance. However,in the subgroup of patients with alcoholic cirrhosis (n=80),carriers of the G-allele were significantly less frequent in SBP-patients (38.1%) than in cirrhotic controls (67.8%,P=0.021). CONCLUSION:In patients with alcoholic liver cirrhosis,the-2518 MCP-1 genotype AA is a risk factor for the development of SBP. | Erwin Gbele Marcus Mhlbauer Hartwig Paulo Monika Johann Christin Meltzer Franz Leidl Norbert Wodarz Reiner Wiest Jrgen Schlmerich Claus Hellerbrand | 2009 | World Journal of Gastroenterology2009，15，44： | 7 |
| 5 | 猪微卫星标记多重PCR扩增组合显示文摘采用多重PCR的方法,以快速扩增微卫星标记和节约试剂为目标,对其反应条件进行优化后,获得了46个扩增效果理想的微卫星标记多重PCR组合,其中30个为二重PCR,16个为三重PCR。实验结果表明,这些多重PCP反应的引物浓度为0.06~0.3μmol/L,Mg2+的浓度变化范围为1.5~3.0mmol/L,采用的PCR缓冲液的倍数为1.0、1.2、1.4或1.6,每个PCR反应聚合酶的用量在0.2和0.4U之间,退火温度及反应循环数分别为52~60℃和32~50℃。所有多重PCR进一步合并为17个可在ABI337测序仪上进行电泳的组合。 | 郭晓令 徐宁迎 LOOFT Christian REINSCH Norbert KAL M Ernst | 2004 | 遗传2004，26，1： | 6 |
| 6 | A NOVEL DESIGN OF COMPOSITE WATER TURBINE USING CFD显示文摘This paper presents computational investigation of a novel design of composite material axial water turbine using Computational Fluid Dynamics(CFD).Based on three-dimensional numerical flow analysis,the flow characteristics through the water turbine with nozzle,wheel and diffuser are predicted.The extract power and torque of a composite water turbine at different rotating speeds were calculated and analyzed for a specific flow speed.The simulation results show that using nozzle and diffuser can increase the pressure drop across the turbine and extract more power from available water energy.These results provide a fundamental understanding of the composite water turbine,and this design and analysis method is used in the design process. | PIECHNA Janusz MLLER Norbert | 2012 | Journal of Hydrodynamics2012，24，1： | 3 |
| 7 | Efficacy of azacitidine compared with that of conventional care regimens in the treatment of higher-risk myelodysplastic syndromes: a randomised, open-label, phase III study显示文摘 | Pierre Fenaux Ghulam J Mufti Eva Hellstrom-Lindberg Valeria Santini Carlo Finelli Aristoteles Giagounidis Robert Schoch Norbert Gattermann Guillermo Sanz Alan List Steven D Gore John F Seymour John M Bennett John Byrd Jay Backstrom Linda Zimmerman David M | 2009 | Lancet Oncology2009，，： | 2 |
| 8 | An automated system for preconcentration/matrix-removal followed by ICP-MS determination of organic phosphorus in oil production water 显示文摘 | Anderson A Rocha Norbert Miekeley Maria Carmen M Bezerra | 2004 | Micro- chemical Journal2004，78，1： | 1 |
| 9 | Recurrence plots for the analysis of complex systems显示文摘 | Norbert Marwan M Carmen Romano Marco Thiel | 2007 | Physics Reports2007，438，5： | 1 |
| 10 | Study of the phase structure of linear polyethylene by means of small-angle X-ray scattering and Raman spectroscopy 显示文摘 | NORBERT S RUFINA G A LEO M | 1995 | Maeromoleeules1995，28，14： | 1 |
| 11 | New developments of polymeric dental composites 显示文摘 | Norbert M Ulrich S | 2001 | Dent Mater2001，26，4： | 1 |
| 12 | Optimizing therapy of sei- zures in stroke patients显示文摘 | Philippe R Alexandra M Norbert N | 2006 | Neurology2006，67，： | 1 |
| 13 | Intersive therapies in follicular Non-Hodgkin lymphoma 显示文摘 | Hunault-Berger M Norbert Ifresh Philippe Solal-Celigny | 2002 | Blood2002，100，： | 1 |
| 14 | A Modified Milstein Scheme for Approximation of Stochastic Delay Differential Equations with Constant Time Lag显示文摘 | NORBERT HOFMANN THOMAS M(U)LLER-GRONBACH | 2006 | Journal of Computational and Applied Mathematics2006，197，： | 1 |
| 15 | Robust system design with built-in soft-error resilience显示文摘 | MITRA S NORBERT S ZHANG M | | 0，，02： | 1 |
| 16 | Presentation and outcome of hepatocellular carcinoma in HIV-infected patients: A U.S.–Canadian multicenter study显示文摘 | Norbert Br?u Rena K. Fox Peiying Xiao Kristen Marks Zeenat Naqvi Lynn E. Taylor Anita Trikha Morris Sherman Mark S. Sulkowski Douglas T. Dieterich Michael O. Rigsby Teresa L. Wright Maria D. Hernandez Mamta K. Jain Gajendra K. Khatri Richard K. Sterling M | 2007 | Journal of Hepatology2007，，4： | 1 |
| 17 | Neuroleptic treatment increases soluble IL-2 receptors and decreases soluble IL-6 receptors in schizophrenia显示文摘 | Norbert Müller Monika Empl Michael Riedel Markus Schwarz Manfred Ackenheil | 1997 | European Archives of Psychiatry and Clinical Neuroscience1997，，6： | 1 |
| 18 | Computational modeling of a utility boiler tangentially-fired furnace retrofitted with swirl burners 显示文摘 | Norbert M | 2010 | Fuel Processing Technology2010，91，： | 1 |
| 19 | Separation of enantiomers:Needs,challenges,perspectives显示文摘 | Norbert M Maier Pilar Franco Wolfgang Lindner | 2001 | J Chromatogr A2001，906，： | 1 |
| 20 | Nanosatellite and microsystem technology capabilitis, limitation and applications显示文摘 | M Seven K Manfred L Norbert | 2005 | Acta Astron2005，39，4： | 1 |
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