6篇
您的检索式：作者名="Herrmann Dirk"
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| 1 | Microfluidic Labon-a-Chip Systems Based on Polymers-Fabrication and Application显示文摘 | Guber Andreas E Heckele Mathias Herrmann Dirk Muslija Alban Saile Volker Eichhorn Lutz | 2004 | Chemical Engineering Journal2004，101，13： | 1 |
| 2 | Single-machine scheduling against due dates with past-sequence-dependent setup times显示文摘 | Biskup Dirk Herrmann Jan | 2008 | European Journal of Operational Research2008，191，： | 1 |
| 3 | Eosinophilic cholangitis is a potentially underdiagnosed etiology in indeterminate biliary stricture显示文摘AIM To investigate presence and extent of eosinophilic cholangitis(EC) as well as Ig G4-related disease in patients with indeterminate biliary stricture(IBS).METHODS All patients with diagnosis of sclerosing cholangitis(SC) and histopathological samples such as biopsies or surgical specimens at University Hospital Frankfurt from 2005-2015 were included. Histopathological diagnoses as well as further clinical course were reviewed. Tissue samples of patients without definite diagnosis after complete diagnostic work-up were reviewed regardingpresence of eosinophilic infiltration and Ig G4 positive plasma cells. Eosinophilic infiltration was as well assessed in a control group of liver transplant donors and patients with primary sclerosing cholangitis.RESULTS One hundred and thirty-five patients with SC were included. In 10/135 (13.5%) patients, no potential cause of IBS could be identified after complete diagnostic work-up and further clinical course. After histopathological review, a post-hoc diagnosis of EC was established in three patients resulting in a prevalence of 2.2% (3/135) of all patients with SC as well as 30%(3/10) of patients, where no cause of IBS was identified. 2/3 patients with post-hoc diagnosis of EC underwent surgical resection with suspicion for malignancy. Diagnosis of Ig G4-related cholangitis was observed in 7/135 patients (5.1%), whereas 3 cases were discovered in post-hoc analysis. 6/7 cases with Ig G4-related cholangitis (85.7%) presented with eosinophilic infiltration in addition to Ig G4 positive plasma cells. There was no patient with eosinophilic infiltration in the control group of liver transplant donors (n=27) and patients with primary sclerosing cholangitis(n = 14).CONCLUSION EC is an underdiagnosed benign etiology of SC and IBS, which has to be considered in differential diagnosis of IBS. | Dirk Walter Sylvia Hartmann Eva Herrmann Jan Peveling-Oberhag Wolf O Bechstein Stefan Zeuzem Martin-Leo Hansmann Mireen Friedrich-Rust Jorg G Albert | 2017 | World Journal of Gastroenterology2017，23，6： | 1 |
| 4 | Scheduling Identical Parallel Machines to Mini- mize Total Tardiness显示文摘 | Dirk Biskup Jan Herrmann Jatinder N D Gupta | 2008 | Int J Production Economics2008，，115： | 1 |
| 5 | Uncertainty and Resolution of Speckle Photography on Micro Samples显示文摘The efficient development of new materials with defined properties requires fast methods of testing low volumes of material,such as a high-throughput investigation of spherical metallic micro samples with varying compositions and structuring treatments.A classical material testing method for macro samples,the tensile test cannot be employed for analyzing the mechanical properties of spherical samples with diameters below 1 mm since there are currently no methods for holding and stretching them.A combination between the incremental electrohydraulic extrusion as stress actuation unit and the speckle photography as strain measuring method is presented for obtaining the required mechanical characteristics.Positive longitudinal strain is generated at stepwise extrusion through<1 mm wide forming channels using a liquid punch and the deformation is observed in situ after each forming step at the interface between the micro sample and a transparent window integrated into the forming die.The occurring local strain fields with a lateral extension down to 100 pm and high gradients require displacement measurements with high lateral resolution over a large range of local dislocations between 0.1 and>10 μm.It is unknown,whether the speckle strain measuring method is able to provide the necessary low uncertainty for the required resolution in the whole measuring range.Therefore,theoretical and experimental investigations of the deformation measurability using the speckle correlation method are presented,showing that local displacements up to 10 μm can be measured with a spatial resolution between 3 and 10μm depending on the displacement size.The dominant effect influencing the measurement uncertainty for displacements at this high spatial resolution is the speckle noise,resulting into measurement uncertainties of less than 100 μm.Hence,speckle photography is shown to be applicable for tensile test on micro samples. | Gabriela Alexe Andreas Tausendfreund Dirk Stobener Lasse Langstadtler Marius Herrmann Christian Schenck Andreas Fischer | 2020 | Nanomanufacturing and Metrology2020，3，2： | 0 |
| 6 | 锂离子蓄电池的正确冷却方案显示文摘锂离子蓄电池的三大冷却方案
对锂离子蓄电池进行温度管理基于它对温度的敏感性。锂离子蓄电池最佳的工作温度范围与其实际的化学组成成分有着密切的关系。原则上讲,锂离子蓄电池的存放温度应尽可能地不要高于60℃, | Hans-Georg Herrmann Dirk Neumeister Achim Wiebelt | 2011 | 汽车制造业2011，，19： | 0 |
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