@article{WeitereAltenburgerAnlangeretal.2021, author = {Weitere, Markus and Altenburger, Rolf and Anlanger, Christine and Baborowski, Martina and B{\"a}rlund, Ilona and Beckers, Liza-Marie and Borchardt, Dietrich and Brack, Werner and Brase, Lisa and Busch, Wibke and Chatzinotas, Antonis and Deutschmann, Bj{\"o}rn and Eligehausen, Jens and Frank, Karin and Graeber, Daniel and Griebler, Christian and Hagemann, Jeske and Herzsprung, Peter and Hollert, Henner and Inostroza, Pedro A. and J{\"a}ger, Christoph G. and Kallies, Ren{\´e} and Kamjunke, Norbert and Karrasch, Bernhard and Kaschuba, Sigrid and Kaus, Andrew and Klauer, Bernd and Kn{\"o}ller, Kay and Koschorreck, Matthias and Krauss, Martin and Kunz, Julia V. and Kurz, Marie J. and Liess, Matthias and Mages, Margarete and M{\"u}ller, Christin and Muschket, Matthias and Musolff, Andreas and Norf, Helge and P{\"o}hlein, Florian and Reiber, Lena and Risse-Buhl, Ute and Schramm, Karl-Werner and Schmitt-Jansen, Mechthild and Schmitz, Markus and Strachauer, Ulrike and von T{\"u}mpling, Wolf and Weber, Nina and Wild, Romy and Wolf, Christine and Brauns, Mario}, title = {Disentangling multiple chemical and non-chemical stressors in a lotic ecosystem using a longitudinal approach}, series = {Science of the Total Environment}, volume = {769}, journal = {Science of the Total Environment}, pages = {144324}, year = {2021}, abstract = {Meeting ecological and water quality standards in lotic ecosystems is often failed due to multiple stressors. However, disentangling stressor effects and identifying relevant stressor-effect-relationships in complex environmental settings remain major challenges. By combining state-of-the-art methods from ecotoxicology and aquatic ecosystem analysis, we aimed here to disentangle the effects of multiple chemical and non-chemical stressors along a longitudinal land use gradient in a third-order river in Germany. We distinguished and evaluated four dominant stressor categories along this gradient: (1) Hydromorphological alterations: Flow diversity and substrate diversity correlated with the EU-Water Framework Directive based indicators for the quality element macroinvertebrates, which deteriorated at the transition from near-natural reference sites to urban sites. (2) Elevated nutrient levels and eutrophication: Low to moderate nutrient concentrations together with complete canopy cover at the reference sites correlated with low densities of benthic algae (biofilms). We found no more systematic relation of algal density with nutrient concentrations at the downstream sites, suggesting that limiting concentrations are exceeded already at moderate nutrient concentrations and reduced shading by riparian vegetation. (3) Elevated organic matter levels: Wastewater treatment plants (WWTP) and stormwater drainage systems were the primary sources of bioavailable dissolved organic carbon. Consequently, planktonic bacterial production and especially extracellular enzyme activity increased downstream of those effluents showing local peaks. (4) Micropollutants and toxicity-related stress: WWTPs were the predominant source of toxic stress, resulting in a rapid increase of the toxicity for invertebrates and algae with only one order of magnitude below the acute toxic levels. This toxicity correlates negatively with the contribution of invertebrate species being sensitive towards pesticides (SPEARpesticides index), probably contributing to the loss of biodiversity recorded in response to WWTP effluents. Our longitudinal approach highlights the potential of coordinated community efforts in supplementing established monitoring methods to tackle the complex phenomenon of multiple stress.}, language = {en} } @article{FuerboeckLitzenbergerPoganyetal.1999, author = {F{\"u}rb{\"o}ck, C. and Litzenberger, M. and Pogany, D. and Gornik, E. and Seliger, Norbert and M{\"u}ller-Lynch, T. and Stecher, M. and Goßner, H. and Werner, W.}, title = {Laser interferometric method for ns-time scale thermal mapping of Smart Power ESD protection devices during ESD stress}, series = {Microelectronics Reliability}, volume = {39}, journal = {Microelectronics Reliability}, number = {6}, issn = {0026-2714}, doi = {10.1016/S0026-2714(99)00124-9}, pages = {925 -- 930}, year = {1999}, language = {en} } @article{PoganySeligerLitzenbergeretal.1999, author = {Pogany, D. and Seliger, Norbert and Litzenberger, M. and Gossner, H. and Stecher, M. and M{\"u}ller-Lynch, T. and Werner, W. and Gornik, E.}, title = {Damage analysis in smart-power technology electrostatic discharge (ESD) protection devices}, series = {Microelectronics Reliability}, volume = {39}, journal = {Microelectronics Reliability}, number = {6}, issn = {0026-2714}, doi = {10.1016/S0026-2714(99)00162-6}, pages = {1143 -- 1148}, year = {1999}, language = {en} } @inproceedings{FuerboeckPoganyLitzenbergeretal.1999, author = {F{\"u}rb{\"o}ck, C. and Pogany, D. and Litzenberger, M. and Gornik, E. and Seliger, Norbert and Gossner, H. and M{\"u}ller-Lynch, T. and Stecher, M. and Werner, W.}, title = {Interferometric temperature mapping during ESD stress and failure analysis of smart power technology ESD protection devices}, series = {Electrical Overstress/Electrostatic Discharge Symposium Proceedings}, booktitle = {Electrical Overstress/Electrostatic Discharge Symposium Proceedings}, publisher = {IEEE}, doi = {10.1109/EOSESD.1999.819067}, pages = {241 -- 250}, year = {1999}, language = {en} } @article{FuerboeckPoganyLitzenbergeretal.2000, author = {F{\"u}rb{\"o}ck, C. and Pogany, D. and Litzenberger, M. and Gornik, E. and Seliger, Norbert and Gossner, H. and M{\"u}ller-Lynch, T. and Stecher, M. and Werner, W.}, title = {Interferometric temperature mapping during ESD stress and failure analysis of smart power technology ESD protection devices}, series = {Journal of Electrostatics}, volume = {49}, journal = {Journal of Electrostatics}, pages = {195 -- 213}, year = {2000}, language = {en} } @inproceedings{WiedlKarlingerMuelleretal.2023, author = {Wiedl, Sebastian and Karlinger, Peter and M{\"u}ller, Norbert and Ruckd{\"a}schel, Holger}, title = {Cellulosefaserverst{\"a}rktes Polypropylen - Eigenschaftsbeeinflussung durch die Schmelzeaufbereitung}, series = {Technomer 2023}, booktitle = {Technomer 2023}, publisher = {Technische Universit{\"a}t Chemnitz}, address = {Chemnitz}, isbn = {978-3-939382-16-4}, pages = {1 -- 14}, year = {2023}, abstract = {Verarbeitungstemperaturen, Verweilzeit und Scherkr{\"a}fte sind entscheidend, um die strukturelle Integrit{\"a}t von cellulosebasierten Fasern zu gew{\"a}hrleisten. In dieser Studie wurden die Einfl{\"u}sse durch die Schmelzeaufbereitung eines cellulosefaserverst{\"a}rkten Polypropylens auf die Faser und den Faserverbund untersucht. Die Schmelze wurde in einem Plastographen mit verschiedenen Rotordrehzahlen, Schmelzetemperaturen und Verweilzeiten aufbereitet. Um die Auswirkung der Einspeisungsmethode auf den Faserabbau zu analysieren, wurden die Fasern entweder direkt der thermoplastischen Schmelze oder zusammen mit dem Kunststoffgranulat dem Plastographen zugef{\"u}hrt. Die Zugabe der Fasern in die Schmelze geht mit einer erh{\"o}hten thermischen und verminderten mechanischen Belastung der Fasern einher. Bei der Pr{\"u}fung der mechanischen Eigenschaften der verschieden aufbereiteten Compounds zeigten sich signifikante Unterschiede. Wurden die Fasern direkt der Schmelze hinzugef{\"u}gt, so f{\"u}hrte dies zu einer deutlich reduzierten Zugfestigkeit. Optische Unterschiede in den Schliffbildern der spritzgegossenen Pr{\"u}fst{\"a}be sowie in den Faserl{\"a}ngen nach Compoundierung konnten nicht festgestellt werden. Die verminderte Festigkeit wird folglich auf die unterschiedliche thermische Belastung der Faser w{\"a}hrend der Verarbeitung zur{\"u}ckgef{\"u}hrt.}, language = {de} } @inproceedings{WiedlObermeierKarlingeretal.2024, author = {Wiedl, Sebastian and Obermeier, Frederik and Karlinger, Peter and M{\"u}ller, Norbert}, title = {Holzbasierte Bio{\"o}konomie und Kunststofftechnik: Nachwachsende Rohstoffe f{\"u}r technische Bauteile}, series = {PIAE Europe 2024}, booktitle = {PIAE Europe 2024}, number = {2435}, publisher = {VDI Verlag GmbH}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092435-9}, pages = {413 -- 427}, year = {2024}, language = {de} } @misc{WiedlObermeierKarlingeretal.2024, author = {Wiedl, Sebastian and Obermeier, Frederik and Karlinger, Peter and M{\"u}ller, Norbert}, title = {Holzbasierte Bio{\"o}konomie und Kunststofftechnik: Nachwachsende Rohstoffe f{\"u}r technische Bauteile}, series = {PIAE Europe 2024, Mannheim}, journal = {PIAE Europe 2024, Mannheim}, year = {2024}, abstract = {Ein Forschungsthema der holzbasierten Bio{\"o}konomie sind thermoplastische Kunststoffe mit Holz- oder Cellulosefaserverst{\"a}rkung. Beide Faserarten werden industriell aus Holz herge- stellt. Der erste Teil der Ver{\"o}ffentlichung befasst sich mit den Eigenschaften der Faser und deren Einsatz zur Schlagz{\"a}hmodifizierung von Polypropylen in Abh{\"a}ngigkeit des Faseranteils. Mit steigendem Faseranteil k{\"o}nnen die Faserverbundkunststoffe h{\"o}here maximale Kr{\"a}fte auf- nehmen. Im Fall der Holzfaserverst{\"a}rkung bleibt die Schlagz{\"a}higkeit des Faserverbundes mit steigendem Faseranteil konstant, wohingegen die Cellulosefaserverst{\"a}rkung zu einer Verdrei- fachung der Schlagz{\"a}higkeit des Verbundes f{\"u}hrt. Im Rahmen des zweiten Teils der Studie wird gezeigt, wie Versteifungsrippen aus holzfaserverst{\"a}rkten Kunststoff die Impacteigen- schaften von Polypropylen/Holzfaservliesen verbessern k{\"o}nnen. Im Durchstoßversuch wird gezeigt, dass die maximal aufgenommenen Kr{\"a}fte und die absorbierte Energie bei dem Hybrid um ca. 30 bzw. 40 \% steigen. Die Hybridisierung der Vliese f{\"u}hrt zu einem spr{\"o}den Bruchver- halten}, language = {de} } @article{WiedlObermeierKarlingeretal.2024, author = {Wiedl, Sebastian and Obermeier, Frederik and Karlinger, Peter and M{\"u}ller, Norbert}, title = {Nachwachsende Verst{\"a}rkungsfasern: Faserverst{\"a}rkung aus Holz und Cellulose f{\"u}r technische Teile}, series = {Zeitschrift Kunststoffe}, volume = {2024}, journal = {Zeitschrift Kunststoffe}, number = {10}, pages = {132 -- 136}, year = {2024}, language = {de} } @article{WiedlObermeierKarlingeretal.2024, author = {Wiedl, Sebastian and Obermeier, Frederik and Karlinger, Peter and M{\"u}ller, Norbert}, title = {Renewable Reinforcement Fibers: Fiber Reinforcement Made of Wood and Cellulose for Technical Components}, series = {Plastic Insights}, volume = {2024}, journal = {Plastic Insights}, number = {09}, pages = {60 -- 64}, year = {2024}, language = {en} } @misc{WiedlObermeierKarlingeretal.2025, author = {Wiedl, Sebastian and Obermeier, Frederik and Karlinger, Peter and M{\"u}ller, Norbert}, title = {Holzbasierte Regenerat-Cellulosefasern als Verst{\"a}rkungsstoff f{\"u}r Polypropylen: werkstoffliche und verfahrenstechnische Untersuchungen}, editor = {Huber, Otto and Bicker, Marc and Patzelt, Peter}, isbn = {978-3-9826926-0-9}, pages = {70 -- 88}, year = {2025}, language = {de} } @misc{WiedlSehySchmidetal., author = {Wiedl, Sebastian and Sehy, Michaela and Schmid, Thomas and Bonauer, Markus and M{\"u}ller, Norbert and List, Manuela}, title = {Neue Wege f{\"u}r WPC: Altholz und klimaresiliente Laubholzarten als alternative Verst{\"a}rkungsstoffe}, series = {Technomer 2025}, journal = {Technomer 2025}, editor = {Seefried, Andreas and Stommel, Markus}, pages = {46 -- 46}, language = {en} }