@article{HillenUnglaubenMurdfield2001, author = {Hillen, Walter and Unglauben, F. and Murdfield, M.}, title = {Study of Database Connections for a Java Medical Image Viewer. Unglauben, F.; Hillen, W.; Murdfield, M.}, series = {Intelligente, innovative Produktentwicklung f{\"u}r die industrielle Praxis. Bl{\"u}mel, Bernd; Stenzel, Horst [Hrsg.]}, journal = {Intelligente, innovative Produktentwicklung f{\"u}r die industrielle Praxis. Bl{\"u}mel, Bernd; Stenzel, Horst [Hrsg.]}, publisher = {Forschungverbund Multimedia an Fachhochschulen}, address = {K{\"o}ln}, pages = {29 -- 33}, year = {2001}, language = {en} } @article{MuellerVeggianLiederBochevetal.1981, author = {M{\"u}ller-Veggian, Mattea and Lieder, R. M. and Bochev, B. and Kutsarova, T.}, title = {Study of a-induced non-equilibrium reactions with particle-y conincidences}, series = {Physica scripta. 24 (1981), H. 1-2}, journal = {Physica scripta. 24 (1981), H. 1-2}, isbn = {0031-8949}, pages = {123}, year = {1981}, language = {en} } @phdthesis{Schieffer2012, author = {Schieffer, Andre}, title = {Studies on diversity and coexistence in an experimental microbial community}, pages = {76 Bl. : Ill.}, year = {2012}, abstract = {Biodiversity and the coexistence of species have puzzled and fascinated biologists since decades and is a hotspot in todays' natural sciences. Preserving this biodiversity is a great challenge as habitats and environments underlying tremendous changes like climate change and the loss of natural habitats, which are mainly due to anthropogenic influences. The coexistence of numerous species even in homogeneous environments is a stunning feature of natural communities and has been summarized under the term 'paradox of plankton'. Up to now, there are several mechanisms discussed, which may contribute to local and global diversity of organisms. Several interspecific trade offs have been identified maintaining the coexistence of species like their abilities regarding competition and predator avoidance, their capability to disperse in space and time, and their ability to exploit variable resources. Further, micro-evolutionary dynamics supporting the coexistence of species have been added to our knowledge, and deriving from theoretical deterministic models, non-linear dynamics which describe the temporal fluctuation of abundances of organisms. Whereas competition and predation seem to be clue structural elements within interacting organisms, the intrinsic dynamic behavior - by means of temporal changes in abundance - plays an important role regarding coexistence within a community. The present work sheds light on different factors affecting the coexistence of species using experimental microbial model systems consisting of a bacterivorous ciliate as the predator and two bacteria strains as prey organism. Additionally, another experimental setup consisting of two up to five bacteria species competing for one limiting resource was investigated. Highly controllable chemostat systems were established to exclude extrinsic disturbances. According to theoretical analyses I was able to show - experimentally and theoretically - that phenotypic plasticity of one species within a microbial one-predator-two-prey food web enlarges the range of possible coexistence of all species under different dynamic conditions, compared to a food web without phenotypic plasticity. This was accompanied by non-linear (chaotic) population dynamics within all experimental systems showing phenotypic plasticity. The experiments on the interplay of competition, predation and invasion showed that all aspects have an influence on species coexistence. Under undisturbed controlled conditions all aspects were analyzed in detail and in combination. Populations showed oscillations which were shown by quasi-chaotic attractors in phase space diagrams. Competition experiments with two up to five bacteria species competing for one limiting resource showed that all organisms were able to coexist which was mediated by species oscillations entering a regime of chaos. Besides that fact it was found, that the productivity (biomass) as well as the total cell numbers - under the same nutrition supply - increased by an increasing number of species in the experimental systems. Up to now, the occurrence of non-linear dynamics in well controlled experimental studies has been recognized several times and this phenomenon seemed to be more common in natural systems than generally assumed.}, language = {en} } @phdthesis{Geenen2013, author = {Geenen, Eva-Maria}, title = {Studies of Epstein-Barr virus EBNA2 and its interactions with host cell factors}, publisher = {Universit{\´e} de Grenoble}, address = {Grenoble}, pages = {125 S.}, year = {2013}, language = {en} } @article{MuellerVeggianBeuscherHaenni1982, author = {M{\"u}ller-Veggian, Mattea and Beuscher, H. and Haenni, D. R.}, title = {Structure of high-spin states in ¹³⁴ Ce}, series = {Annual report 1981 / Kernforschungsanlage J{\"u}lich Institut f{\"u}r Kernphysik / Hrsg.: F. Gr{\"u}mmer. - (Spezielle Berichte der Kernforschungsanlage J{\"u}lich ; 146)}, journal = {Annual report 1981 / Kernforschungsanlage J{\"u}lich Institut f{\"u}r Kernphysik / Hrsg.: F. Gr{\"u}mmer. - (Spezielle Berichte der Kernforschungsanlage J{\"u}lich ; 146)}, publisher = {Kernforschungsanlage}, address = {J{\"u}lich}, pages = {52}, year = {1982}, language = {en} } @article{ZerlinKasischkeDigeletal.2007, author = {Zerlin, Kay and Kasischke, Nicole and Digel, Ilya and Maggakis-Kelemen, Christina and Temiz Artmann, Ayseg{\"u}l and Porst, Dariusz and Kayser, Peter and Linder, Peter and Artmann, Gerhard}, title = {Structural transition temperature of hemoglobins correlates with species' body temperature}, series = {European Biophysics Journal. 37 (2007), H. 1}, journal = {European Biophysics Journal. 37 (2007), H. 1}, isbn = {1432-1017}, pages = {1 -- 10}, year = {2007}, language = {en} } @article{StaatHeitzer1999, author = {Staat, Manfred and Heitzer, M.}, title = {Structural Reliability Analysis of Elasto-Plastic Structures}, series = {Safety and reliability : proceedings of ESREL '99, the Tenth European Conference on Safety and Reliability, Munich-Garching, Germany, 13 - 17 September 1999 / Schu{\"e}ller, G. I.; Kafka, P. [eds]}, journal = {Safety and reliability : proceedings of ESREL '99, the Tenth European Conference on Safety and Reliability, Munich-Garching, Germany, 13 - 17 September 1999 / Schu{\"e}ller, G. I.; Kafka, P. [eds]}, publisher = {Balkema}, address = {Rotterdam}, isbn = {90-5809-109-0}, pages = {513 -- 518}, year = {1999}, language = {en} } @article{PresslerEsefeldScherretal.2010, author = {Pressler, Axel and Esefeld, Katrin and Scherr, Johannes and Ali, Mohammad and Hanssen, Henner and Kotliar, Konstantin and Lanzl, Ines and Halle, Martin and Kaemmerer, Harald and Schmidt-Trucks{\"a}ss, Arno and Hager, Alfred}, title = {Structural alterations of retinal arterioles in adults late after repair of aortic isthmic coarctation}, series = {The American Journal of Cardiology}, volume = {105}, journal = {The American Journal of Cardiology}, number = {5}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0002-9149}, doi = {10.1016/j.amjcard.2009.10.070}, pages = {740 -- 744}, year = {2010}, abstract = {Patients after coarctation repair still have an increased risk of cardiovascular or cerebrovascular events. This has been explained by the persisting hypertension and alterations in the peripheral vessels. However, involvement of the central vessels such as the retinal arteries is virtually unknown. A total of 34 patients after coarctation repair (22 men and 12 women; 23 to 58 years old, age range 0 to 32 years at surgical repair) and 34 nonhypertensive controls underwent structural and functional retinal vessel analysis. Using structural analysis, the vessel diameters were measured. Using functional analysis, the endothelium-dependent vessel dilation in response to flicker light stimulation was assessed. In the patients after coarctation repair, the retinal arteriolar diameter was significantly reduced compared to that of the controls (median 182 μm, first to third quartile 171 to 197; vs 197 μm, first to third quartile 193 to 206; p <0.001). These findings were independent of the peripheral blood pressure and age at intervention. No differences were found for venules. The functional analysis findings were not different between the patients and controls (maximum dilation 3.5\%, first to third quartile 2.1\% to 4.5\% vs 3.6\%, first to third quartile 2.2\% to 4.3\%; p = 0.81), indicating preserved autoregulative mechanisms. In conclusion, the retinal artery diameter is reduced in patients after coarctation repair, independent of their current blood pressure level and age at intervention. As a structural marker of chronic vessel damage associated with past, current, or future hypertension, retinal arteriolar narrowing has been linked to stroke incidence. These results indicate an involvement of cerebral microcirculation in aortic coarctation, despite timely repair, and might contribute to explain the increased rate of cerebrovascular events in such patients.}, language = {en} } @article{FrotscherStaat2014, author = {Frotscher, Ralf and Staat, Manfred}, title = {Stresses produced by different textile mesh implants in a tissue equivalent}, series = {BioNanoMaterials}, volume = {15}, journal = {BioNanoMaterials}, number = {1-2}, publisher = {De Gruyter}, address = {Berlin}, issn = {2191-4672 (E-Journal); 2193-066X (E-Journal); 0011-8656 (Print); 1616-0177 (Print); 2193-0651 (Print)}, doi = {10.1515/bnm-2014-0003}, pages = {25 -- 30}, year = {2014}, abstract = {Two single-incision mini-slings used for treating urinary incontinence in women are compared with respect to the stresses they produce in their surrounding tissue. In an earlier paper we experimentally observed that these implants produce considerably different stress distributions in a muscle tissue equivalent. Here we perform 2D finite element analyses to compare the shear stresses and normal stresses in the tissue equivalent for the two meshes and to investigate their failure behavior. The results clearly show that the Gynecare TVT fails for increasing loads in a zipper-like manner because it gradually debonds from the surrounding tissue. Contrary to that, the tissue at the ends of the DynaMesh-SIS direct may rupture but only at higher loads. The simulation results are in good agreement with the experimental observations thus the computational model helps to interpret the experimental results and provides a tool for qualitative evaluation of mesh implants.}, language = {en} } @article{GruetersHacklWillms1990, author = {Gr{\"u}ters, Hugo and Hackl, K. and Willms, H.}, title = {Stress and strain analyses of rectangular glass plates for large deformations. Part 2. Calculation of fracture probabilities in rectangular plates under area load}, series = {Glastechnische Berichte. 63 (1990), H. 4}, journal = {Glastechnische Berichte. 63 (1990), H. 4}, isbn = {0017-1085}, pages = {93 -- 95}, year = {1990}, language = {en} } @article{GruetersHacklWillms1990, author = {Gr{\"u}ters, Hugo and Hackl, K. and Willms, H.}, title = {Stress and strain analyses of rectangular glass plates for large deformations. Part 1. Dimensioning of rectangular plates under surface load and/or line load.}, series = {Glastechnische Berichte. 63 (1990), H. 3}, journal = {Glastechnische Berichte. 63 (1990), H. 3}, isbn = {0017-1085}, pages = {69 -- 77}, year = {1990}, language = {en} } @article{GruetersBlankDuerkopetal.1994, author = {Gr{\"u}ters, Hugo and Blank, K. and D{\"u}rkop, D. and Durchholz, M.}, title = {Strength tests of flat glass by means of four-point bending. Blank, K.; D{\"u}rkop, D.; Durchholz, M.; Gr{\"u}ters, H.}, series = {Glastechnische Berichte. Glass science and technology. 67 (1994), H. 1}, journal = {Glastechnische Berichte. Glass science and technology. 67 (1994), H. 1}, isbn = {0946-7475}, pages = {9 -- 15}, year = {1994}, language = {en} } @article{SchaeferLampeyMende1989, author = {Sch{\"a}fer, Horst and Lampey, H. and Mende, H. H.}, title = {Stray-field profile of single M-shaped Si-Fe transformer sheets and the resulting interaction in a stack}, series = {Physica Scripta. 39 (1989), H. 4}, journal = {Physica Scripta. 39 (1989), H. 4}, isbn = {0031-8949}, pages = {520 -- 522}, year = {1989}, language = {en} } @article{SchaeferMende1987, author = {Sch{\"a}fer, Horst and Mende, H. H.}, title = {Stray field profile of grain-oriented rectangular 3\% SiFe sheets in dependence on vertical and in-plane magnetic fields}, series = {Physica Status Solidi (A). 100 (1987), H. 2}, journal = {Physica Status Solidi (A). 100 (1987), H. 2}, isbn = {0031-8965}, pages = {621 -- 632}, year = {1987}, language = {en} } @article{SimonisLuethWangetal.2003, author = {Simonis, A. and L{\"u}th, H. and Wang, J. and Sch{\"o}ning, Michael Josef}, title = {Strategies of miniaturised reference electrodes integrated in a silicon-based „one chip" pH sensor}, series = {Sensors. 3 (2003), H. 9}, journal = {Sensors. 3 (2003), H. 9}, isbn = {1424-8220}, pages = {330 -- 339}, year = {2003}, language = {en} } @article{OberlaenderKirchnerKeusgenetal.2015, author = {Oberl{\"a}nder, Jan and Kirchner, Patrick and Keusgen, Michael and Sch{\"o}ning, Michael Josef}, title = {Strategies in developing thin-film sensors for monitoring aseptic food processes : Theoretical considerations and investigations of passivation materials}, series = {Electrochimica Acta}, volume = {183}, journal = {Electrochimica Acta}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0013-4686}, doi = {10.1016/j.electacta.2015.06.126}, pages = {130 -- 136}, year = {2015}, abstract = {The sterilization of packages in aseptic food processes is highly significant to maintain a consumer-safe product with extended shelf-life. Today, the sterilization of food packages is predominantly accomplished by gaseous hydrogen peroxide (H2O2) in combination with heat. In order to monitor this sterilization process, calorimetric gas sensors as differential set-up of two platinum temperature sensors representing a catalytically active (additionally deposition of MnO2) and a passive segment have been recently developed. The temperature rise of the exothermic decomposition serves as an indicator of the present H2O2 concentration. In the present work, a theoretical approach considering the sensor's thermochemistry and physical transport phenomena was formulated to evaluate the temperature rise based on the energy content of gaseous H2O2. In a further part of this work, three polymers have been analyzed with respect to their application as passivation materials. The examined polymers are photoresist SU-8, perfluoroalkoxy (PFA) and fluorinated ethylene propylene (FEP). Thermal analyses by means of differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) have been conducted to determine the operation limits of the polymers. The overall chemical resistance and stability of the polymers against the harsh environmental conditions during the sterilization process have been examined by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR).}, language = {en} } @article{KeusgenSchoening2004, author = {Keusgen, M. and Sch{\"o}ning, Michael Josef}, title = {Strategies for biosensoric detection of potential drugs in nature}, series = {Biomedizinische Technik. 49 (2004), H. 2}, journal = {Biomedizinische Technik. 49 (2004), H. 2}, isbn = {0932-4666}, pages = {1004 -- 1005}, year = {2004}, language = {en} } @article{ZiemonsBerghoffLanskeetal.1988, author = {Ziemons, Karl and Berghoff, G. and Lanske, D. and Schultze, K.}, title = {Strangeness production in deep inelastic muon-nucleon scattering}, series = {Verhandlungen der Deutschen Physikalischen Gesellschaft}, volume = {23}, journal = {Verhandlungen der Deutschen Physikalischen Gesellschaft}, number = {5}, isbn = {0420-0195}, pages = {T309 -- T309}, year = {1988}, language = {en} } @inproceedings{StaatTran2022, author = {Staat, Manfred and Tran, Ngoc Trinh}, title = {Strain based brittle failure criteria for rocks}, series = {Proceedings of (NACOME2022) The 11th National Conference on Mechanics, Vol. 1. Solid Mechanics, Rock Mechanics, Artificial Intelligence, Teaching and Training, Hanoi, December 2-3, 2022}, booktitle = {Proceedings of (NACOME2022) The 11th National Conference on Mechanics, Vol. 1. Solid Mechanics, Rock Mechanics, Artificial Intelligence, Teaching and Training, Hanoi, December 2-3, 2022}, publisher = {Nha xuat ban Khoa hoc tu nhien va Cong nghe (Verlag Naturwissenschaft und Technik)}, address = {Hanoi}, isbn = {978-604-357-084-7}, pages = {500 -- 509}, year = {2022}, abstract = {When confining pressure is low or absent, extensional fractures are typical, with fractures occurring on unloaded planes in rock. These "paradox" fractures can be explained by a phenomenological extension strain failure criterion. In the past, a simple empirical criterion for fracture initiation in brittle rock has been developed. But this criterion makes unrealistic strength predictions in biaxial compression and tension. A new extension strain criterion overcomes this limitation by adding a weighted principal shear component. The weight is chosen, such that the enriched extension strain criterion represents the same failure surface as the Mohr-Coulomb (MC) criterion. Thus, the MC criterion has been derived as an extension strain criterion predicting failure modes, which are unexpected in the understanding of the failure of cohesive-frictional materials. In progressive damage of rock, the most likely fracture direction is orthogonal to the maximum extension strain. The enriched extension strain criterion is proposed as a threshold surface for crack initiation CI and crack damage CD and as a failure surface at peak P. Examples show that the enriched extension strain criterion predicts much lower volumes of damaged rock mass compared to the simple extension strain criterion.}, language = {en} } @article{JildehWagnerSchoening2021, author = {Jildeh, Zaid B. and Wagner, Patrick H. and Sch{\"o}ning, Michael Josef}, title = {Sterilization of Objects, Products, and Packaging Surfaces and Their Characterization in Different Fields of Industry: The Status in 2020}, series = {physica status solidi (a) applications and materials science}, volume = {218}, journal = {physica status solidi (a) applications and materials science}, number = {13}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1862-6319}, doi = {10.1002/pssa.202000732}, pages = {27 Seiten}, year = {2021}, abstract = {The treatment method to deactivate viable microorganisms from objects or products is termed sterilization. There are multiple forms of sterilization, each intended to be applied for a specific target, which depends on—but not limited to—the thermal, physical, and chemical stability of that target. Herein, an overview on the currently used sterilization processes in the global market is provided. Different sterilization techniques are grouped under a category that describes the method of treatment: radiation (gamma, electron beam, X-ray, and ultraviolet), thermal (dry and moist heat), and chemical (ethylene oxide, ozone, chlorine dioxide, and hydrogen peroxide). For each sterilization process, the typical process parameters as defined by regulations and the mode of antimicrobial activity are summarized. Finally, the recommended microorganisms that are used as biological indicators to validate sterilization processes in accordance with the rules that are established by various regulatory agencies are summarized.}, language = {en} }