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On the experimental characterization of the fluid volume influence on the friction between rough surfaces

Friction 2023年第7期11卷 1334-1348页

作者： Lukas STAHL Michael MÜLLER georg-peter ostermeyer Institute of Dynamics and Vibrations Technische Universität BraunschweigBraunschweig 37106Germany

The load-bearing behaviour of lubricated contacts depends primarily on the normal force,the relative velocity,and the ***,with the aid of the Stribeck curve,it is usually well possible to characterize whether hydrodynamics,mixed friction,or boundary friction is more likely to be *** fact that the load regime can also depend on the fluid quantity is obvious,but has hardly been systematically investigated so *** for contacts with microscopic roughness,the defined application of a very small amount of fluid is a very challenging *** this paper,a very fundamental study shows how a pin-on-disc tribometer can be used to achieve the transition from dry friction via mixed friction to predominant hydrodynamics by the amount of supplied *** experiments are carried out on samples filed with different *** addition,the simultaneous influence of partial filling and normal force as well as relative velocity is also *** good reproducibility has been practically reached over the entire range of the *** the quantities for the coefficient of friction(COF),it was concluded that close to full filling,a reduction of the fluid quantity has a similar effect on the COF as the reduction of the *** property goes along with the common theory of starved lubricated *** behaviour was not observed to the same extent for the normal *** the vicinity of smaller fluid quantities,the COF increases very rapidly with further reduction in fluid quantity,far more disproportionately than that with reduction in *** a deeper understanding of this problem,various practical issues such as idling or the run-up process in bearings can also be studied in a more focused manner.

关键词： starved lubrication Stribeck curve pin-on-disc tribometer fluid supply experimental studies

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Development and Implementation of Constant Friction Power Control in a Reduced Scale Brake Dynamometer for Investigations of Automotive Brake Systems

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Journal of Mechanics Engineering and Automation 2016年第6期6卷 282-287页

作者： Stephan Raczek georg-peter ostermeyer Institute of Dynamics and Vibrations TU Braunschweig Braunschweig 38106 Germany

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On Implementing a Simulated Moment of Inertia in a Reduced Scale Brake Dynamometer

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Journal of Mechanics Engineering and Automation 2017年第4期7卷 180-185页

作者： georg-peter ostermeyer Stephan Raczek Institute of Dynamics and Vibrations TU Braunschweig Braunschweig 38106 Germany

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Heart failure classification in clinical practice: time to redefine?

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Chinese Medical Journal 2022年第9期135卷 1039-1040页

作者： Kai Hu georg Ertl Stefan Frantz peter Nordbeck Comprehensive Heart Failure Center WürzburgGermany Department of Internal Medicine I University Hospital WürzburgWürzburgGermany.

Heart failure (HF) represents one of the major disease burdens worldwide now. Congestive HF-related medicare expenditures remain high, constituting a global challenge. After manifestation, patients with HF face signif... 详细信息

关键词： mortality clinical morbidity

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Accuracy of the AAST organ injury scale for CT evaluation of traumatic liver and spleen injuries

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Chinese Journal of Traumatology 2014年第1期17卷 25-30页

作者： georg Homann Christina Toschke peter Gassmann Volker Vieth Department of Diagnostic and Interventional Radiology Eberhard-Karls-University T(Jbingen Tubingen Germany Department of Clinical Radiology University Hospital Munster Munster Germany Department of Surgery University Hospital Mainz Mainz Germany

腹的损害的 ObjectiveDetection 是在损伤管理的一个很重要的部件因此对包括他们的严厉度的肝和脾损害的一个精确评价是必要的。有一个好盒子处于紧急情况状况相信那 radiologists’性能可以用获得系统建立从一条系统的途径获利。因为... 详细信息

腹的损害的 ObjectiveDetection 是在损伤管理的一个很重要的部件因此对包括他们的严厉度的肝和脾损害的一个精确评价是必要的。有一个好盒子处于紧急情况状况相信那 radiologists’性能可以用获得系统建立从一条系统的途径获利。因为损伤的外科的美国协会起草的机关损害规模(OIS ) 是为客观损伤评价的珍贵指导，获得系统。这研究的目的是回顾地评估用 OIS 的一条结构化的途径是否可以帮助改进损伤 assessmentMethodsFifty -- 在腹的损伤在这被包括以后，经历了 CT 和剖腹术的三个病人， 38 男性和 15 女性学习。剖腹术被富有经验的外科医生与 6 的最小的经验执行；年。当原来的 CT 报告被不同放射线学者与最小写时， 3 经历；有 4 的经验的年，然后一个放射线学者；年考察了一样的原来的 CT 图画，导致结构化的报告。肝和怒气损害上的原版和结构化的 CT 结果被变成 OIS 等级。最后，起始、组织的 CT 结果与调查结果从外科 *** 收集了的 intraoperative 相比我们发现了 0.68 的吝啬的分叉的原来的 CT 报告； ± ； 0.8 ( r ； = ； 0.45 )到为肝损害在外科报告发现的 OIS ( 0.69 ； ± ； 1.17 为怒气损害；r ； = ； 0.69 ) 。与结构化的途径比较，在我们检测了 0.8 的分叉的地方； ± ； 0.68；r ； = ； 0.63 (0.47 ； ± ； 0.77 为怒气损害；r ； = ； 0.91 ) ，没有重要差别。然而，我们在结构化的 *** 学习表演检测了在诊断上的更低的率用一张成像清单的腹的损伤不导致的 triage 的一条结构化的途径显著地更高的察觉率，而是一个不重要的趋势到减少 overdiagnoses 的率，因此在分级严厉是更精确的分级。有关由回顾的学习设计的偏爱，进一步未来的调查被需要在组织了报导系统是在另外的放射学的学科的珍贵指导的紧急情况部门过程在工作流上评估损伤分数的影响。

关键词： CT图像肝损伤外伤性脾脏肝脏结构化方法创伤评分评价

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从参与管理到成为管理者:高校管理机构领导人更替的策略研究

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应用型高等教育研究 2022年第1期7卷 35-40页

作者： peter-georg Albrecht 陈颖(翻译) 马格德堡-史丹达尔应用科学大学德国马格德堡39114 奥斯纳布吕克应用科学大学

德国高校实施民主的自我管理体制,学科和专业均由合议机构管理。委员会经选举产生且具有一定任期,带来管理层不断更替。通过系统梳理高校管理层更替的现状、方式和所存在的问题,提出了相应的行动策略。

关键词：委员更替领导层更替领导换届管理

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从实践中学习--以工程专业、设计专业和经济专业为例

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应用型高等教育研究 2023年第1期8卷 52-57页

作者： peter-georg Albrecht Lisa König 陈颖(译) 德国马格德堡-施滕达尔应用科学大学德国马格德堡39114 不详

应用科学大学非常注重实践,教授必须证明拥有实践经验才能被聘任,教学通常由外聘的业界人士辅助。这样做的前提条件是把获取实践能力确定为学习目标,并对学生提出在大学学习前、期间和末期都进行不同实习的要求,特别是要求学生对实践活... 详细信息

应用科学大学非常注重实践,教授必须证明拥有实践经验才能被聘任,教学通常由外聘的业界人士辅助。这样做的前提条件是把获取实践能力确定为学习目标,并对学生提出在大学学习前、期间和末期都进行不同实习的要求,特别是要求学生对实践活动进行反思,使之成为学习过程中的重要环节。不同专业具体规定在一定程度上既呈现出一定的相似性,又存在一些差异。最为明显的区别体现于是否就从实践中学习提出强制性要求以及是否确定相关的教学和学习深度。

关键词：实践工程专业、设计专业和经济专业应用科学大学

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High incidence of maternal vitamin B12 deficiency detected by newborn screening: first results from a study for the evaluation of 26 additional target disorders for the German newborn screening panel

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World Journal of Pediatrics 2018年第5期14卷 470-481页

作者： Gwendolyn Gramer Junmin Fang-Hoffmann Patrik Feyh Glynis Klinke peter Monostori Jürgen G.Okun georg F.Hoffmann Division of Neuropediatric and Metabolic Medicine Department of General PediatricsCenter for Pediatric and Adolescent MedicineUniversity Hospital HeidelbergIm Neuenheimer Feld 43069120 HeidelbergGermany

Background Newborn screening (NBS) in Germany currently includes 15 target disorders. Recent diagnostic improvements suggest an extension of the screening panel. Methods Since August 2016, a prospective study evaluating 26 additional target disorders (25 metabolic disorders and vitamin B12-deficiency) in addition to the German screening panel is performed at the Newborn Screening Center Heidel-berg. First-tier results from tandem-MS screening are complemented by second-tier strategies for 15 of the additional target disorders. NBS results of seven patients diagnosed symptomatically with one of the additional target disorders by selective screening since August 2016 are retrospectively evaluated. Results Over a 13-month period, 68,418 children participated in the study. Second-tier analyses were performed in 5.4%of samples. Only 59 (0.1%) of study participants had abnormal screening results for one of the additional target disorders. Target disorders from the study panel were confirmed in 12 children: 13-hydroxy-3-methylglutaryl coenzyme A (CoA)-lyase deficiency, 1 citrullinemia type I, 1 multiple acyl-CoA dehydrogenase-deficiency, 1 methylenetetrahydrofolate reductase-deficiency, and 8 children with maternal vitamin B12-deficiency. In addition, six of seven patients diagnosed symptomatically outside the study with one of the target disorders would have been identified by the study strategy in their NBS sample. Conclusions Within 13 months, the study 'Newborn Screening 2020' identified additional 12 children with treatable con-ditions while only marginally increasing the recall rate by 0.1%. Maternal vitamin B12-deficiency was the most frequent finding. Even more children could benefit from screening for the additional target disorders by extending the NBS panel for Germany and/or other countries.

关键词： Metabolic disorders Newborn screening Second-tier Vitamin B12 deficiency

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Seed production,seed dispersal and seedling establishment of two afromontane tree species in and around a church forest：implications for forest restoration

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Forest Ecosystems 2016年第4期3卷 287-296页

作者： Abrham Abiyu Demel Teketay Gerhard Glatzel georg Gratzer Amhara Agricultural Research Institute P. O. Box 527 Bahir Dar Ethiopia Department of Crop Science and Production Botswana University of Agriculture and Natural Resources Private Bag 0027 Gaborone Botswana Institute of Forest Ecology University of Natural Resources and Life Sciences Peter Jordan Strage 82 A-1190 Vienna Austria

Background：Seed production,seed dispersal and seedling establishment are relevant life phases of *** these processes and their patterns is essential to recognize vegetation dynamics and to apply it to forest ***：For Olea europaea and Schefflera abyssinica,fecundity was estimated using randomized branch *** dispersal and seedling establishment were monitored using spatially explicit seed traps and *** functions were calibrated applying inverse ***：*** produced more seeds and had longer dispersal distances compared to *** between observed and predicted number of recruits were statistically *** of the two species showed different niche ***：The studied species were recruitment-limited due to low dispersal activity or lack of suitable *** relying on natural regeneration should overcome these limitations by increasing disperser visitation and reducing biotic and abiotic stresses.

关键词： Fecundity Olea europaea Schefflera abyssinica Recruitment limitation Restoration

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Development of new electromagnetic suspension-based high-speed Maglev vehicles in China:Historical and recent progress in the field of dynamical simulation

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International Journal of Mechanical System Dynamics 2023年第2期3卷 97-118页

作者： Sansan Ding peter Eberhard georg Schneider Patrick Schmid Arnim Kargl Yong Cui Ullrich Martin Xin Liang Chao Huang Markus Bauer Florian Dignath Qinghua Zheng CRRC Qingdao Sifang Co. Ltd.QingdaoPeople's Republic of China Institute of Engineering and Computational Mechanics University of StuttgartStuttgartGermany Institute of Railway and Transportation Engineering University of StuttgartStuttgartGermany Chinese-German Research and Development Centre for Railway and Transportation Technology Stuttgart(CDFEB e.V.) StuttgartGermany thyssenkrupp Transrapid GmbH MunichGermany

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 *** 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 ***,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.

关键词： Maglev high-speed Maglev vehicle magnetic levitation simulation models dynamic simulation vehicle dynamics

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