@misc{GerwinRaabHinzetal., author = {Gerwin, Werner and Raab, Thomas and Hinz, Christoph and Letmathe, Peter and Leuchner, Michael and Roß-Nickoll, Martina and R{\"u}de, Thomas and Trachte, Katja and W{\"a}tzold, Frank and Lehmkuhl, Frank}, title = {Perspectives of lignite post‑mining landscapes under changing environmental conditions: what can we learn from a comparison between the Rhenish and Lusatian region in Germany?}, series = {Environmental Sciences Europe}, volume = {35}, journal = {Environmental Sciences Europe}, issn = {2190-4715}, doi = {10.1186/s12302-023-00738-z}, abstract = {Background The decision of the German federal government to cease lignite mining until 2038 or—if possible— already earlier until 2030, will cause manifold transition processes in the remaining lignite mining districts of Germany. The two largest districts are located in geographically opposite regions: The Rhineland in the western part and Lusatia in the east of Germany. As particularly these two mining districts will experience severe changes in their socioeconomic as well environmental conditions, the federal government has adopted comprehensive economic support measures. However, the environmental changes will also cause altered ecosystem functions and services to be provided by the future post-mining landscapes. Results In this paper, the two main lignite-producing regions of Germany are compared with regard to their natural and cultural settings. The economic situation and its history are reflected and differences are outlined. Part of the disparities in the cultural development can be explained by very different natural conditions, especially edaphic factors and climatic situation. Because of dissimilar geological settings, different mining technologies were developed and are in use in the two regions with distinct effects on the resulting post-mining landscapes. Conclusion The long-standing and manifold lignite mining activities have radically restructured the landscapes in Lusatia and the Rhineland. With the ongoing decline of the mining industry and its complete cessation, presumably within the next decade, both regions will alter their faces significantly. These changes offer both challenges but also opportunities with respect to the post-mining landscapes and their ecosystem services they are going to provide. The prerequisites for a positive socioeconomic development and for sustainable land-use concepts that also consider ecological aspects are different for both regions. However, or especially because of these differences, the knowledge exchange and experience transfer between both mining regions are pivotal for the success of this extensive transformation process.}, language = {en} } @misc{LehmkuhlGerwinRaabetal., author = {Lehmkuhl, Frank and Gerwin, Werner and Raab, Thomas and Birkhofer, Klaus and Hinz, Christoph and Letmathe, Peter and Leuchner, Michael and Roß-Nickoll, Martina and R{\"u}de, Thomas R. and Trachte, Katja and W{\"a}tzold, Frank}, title = {Perspectives for the lignite post-mining landscapes of the lignite mining landscapes under changing environmental conditions - what can we learn from a comparison between the Rhenish and the Lusatian regions in Germany? : EGU General Assembly 2024, Vienna, Austria \& Online | 14-19 April 2024}, publisher = {Copernicus GmbH}, doi = {10.5194/egusphere-egu24-2791}, abstract = {The German government's decision to phase out lignite mining by 2038 or earlier, as recently 2030 has been agreed for the Rhineland, will trigger a number of transition processes in Germany's remaining lignite mining areas. The two largest lignite mining areas are located in geographically different regions: Rhineland in the west and Lusatia in the east. As the socio-economic and environmental conditions in these two mining areas are set to change dramatically, the German government has adopted extensive economic support measures. However, the environmental changes will also lead to changes in the ecosystem functions and services provided by the future post-mining landscapes. Gerwin et al. (2023) compare the two main lignite producing regions of Germany in terms of their natural and cultural environments. The economic situation and its history are reflected and differences are outlined. Part of the differences in cultural development can be explained by the natural conditions, especially the edaphic factors and the climatic situation. Because of the specific geological settings, tailored mining technologies were developed and used in the two regions, with different effects on the resulting post-mining landscapes. We conclude that the landscapes of Lusatia and the Rhineland have been radically restructured by the long and varied history of lignite mining. Both regions will change significantly as the mining industry continues to decline and is expected to cease altogether within the next decade. These changes in the post-mining landscapes and the ecosystem services will provide both challenges and opportunities. The preconditions for positive socio-economic development and for sustainable land use concepts that also consider ecological aspects are different for the two regions. The exchange of knowledge and experience between the two mining regions is crucial to the success of this major transformation process, despite, or perhaps because of, these differences. Gerwin, W., Raab, T., Birkhofer, K., Hinz, C., Letmathe, P., Leuchner, M., Ro\&\#223;-Nickoll, M., R\&\#252;de, T., Trachte, K., W\&\#228;tzold, F., Lehmkuhl, F. (2023): Perspectives of lignite post-mining landscapes under changing environmental conditions: what can we learn from a comparison between the Rhenish and Lusatian region in Germany? Environmental Sciences Europe 35:36. https://doi.org/10.1186/s12302-023-00738-z}, language = {en} } @inproceedings{SutLohmannRepmannFischeretal., author = {Sut-Lohmann, Magdalena and Repmann, Frank and Fischer, Thomas and Raab, Thomas}, title = {Retardation of iron-cyanide complexes in soils of a former Manufactured Gas Plant site}, series = {Book of abstracts, XII International Congress of Young Chemists, YoungChem2014, Szczecin, Poland 8th-12th October 2014}, booktitle = {Book of abstracts, XII International Congress of Young Chemists, YoungChem2014, Szczecin, Poland 8th-12th October 2014}, address = {Warsaw}, isbn = {978-83-61037-28-6}, pages = {S. 44}, language = {en} } @techreport{ThonickeRahnerArnethetal., author = {Thonicke, Kirsten and Rahner, Eva and Arneth, Almut and Bartkowski, Bartosz and Bonn, Aletta and D{\"o}hler, Christian and Finger, Robert and Freitag, Jens and Grosch, Rita and Grossart, Hans-Peter and Gr{\"u}tzmacher, Kim and Hartman Scholz, Amber and H{\"a}user, Christoph and Hickler, Thomas and H{\"o}lker, Franz and J{\"a}hnig, Sonja C. and Jeschke, Jonathan and Kassen, Rees and Kastner, Thomas and Kramer-Schadt, Stephanie and Krug, Cornelia and Lakner, Sebastian and Loft, Lasse and Matzdorf, Bettina and Meakins, Felicity and De Meester, Luc and Monaghan, Michael T. and M{\"u}ller, Daniel and Overmann, J{\"o}rg and Quaas, Martin and Radchuk, Viktoriia and Reyer, Christopher and Roos, Christian and Scholz, Imme and Schroer, Sibylle and Sioen, Giles Bruno and Sommer, Simone and Sommerwerk, Nike and Tockner, Klement and Turk, Zachary and Warner, Barbara and W{\"a}tzold, Frank and Wende, Wolfgang and Veenstra, Tonjes and Voort, Hein van de}, title = {10 Must-Knows aus der Biodiversit{\"a}tsforschung}, publisher = {Potsdam-Institut f{\"u}r Klimafolgenforschung e.V. (PIK)}, address = {Potsdam}, doi = {10.5281/zenodo.6257476}, pages = {58}, language = {de} } @inproceedings{SutLohmannFischerRepmannetal., author = {Sut-Lohmann, Magdalena and Fischer, Thomas and Repmann, Frank and Raab, Thomas}, title = {Feasibility of field portable near infrared (NIR) spectroscopy to determine cyanide concentrations in soil}, series = {European Geosciences Union, General Assembly 2013, Vienna, Austria, 07 - 12 April 2013}, booktitle = {European Geosciences Union, General Assembly 2013, Vienna, Austria, 07 - 12 April 2013}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, abstract = {In Germany, at more than 1000 sites, soil is polluted with an anthropogenic contaminant in form of iron-cyanide complexes. These contaminations are caused by former Manufactured Gas Plants (MGPs), where electricity for lighting was produced in the process of coal gasification. The production of manufactured gas was restrained in 1950, which caused cessation of MGPs. Our study describes the application of Polychromix Handheld Field Portable Near-Infrared (NIR) Analyzer to predict the cyanide concentrations in soil. In recent times, when the soil remediation is of major importance, there is a need to develop rapid and non-destructive methods for contaminant determination in the field. In situ analysis enables determination of 'hot spots', is cheap and time saving in comparison to laboratory methods. This paper presents a novel usage of NIR spectroscopy, where a calibration model was developed, using multivariate calibration algorithms, in order to determine NIR spectral response to the cyanide concentration in soil samples. As a control, the contaminant concentration was determined using conventional Flow Injection Analysis (FIA). The experiments revealed that portable near-infrared spectrometers could be a reliable device for identification of contamination 'hot spots', where cyanide concentration are higher than 2400 mg kg-1 in the field and >1750 mg kg-1 after sample preparation in the laboratory, but cannot replace traditional laboratory analyses due to high limits of detection.}, language = {en} } @misc{SutLohmannFischerRepmannetal., author = {Sut-Lohmann, Magdalena and Fischer, Thomas and Repmann, Frank and Raab, Thomas and Dimitrova, Tsvetelina}, title = {Feasibility of field portable near infrared (NIR) spectroscopy to determine cyanide concentrations in soil}, series = {Water, Air and Soil Pollution}, volume = {223}, journal = {Water, Air and Soil Pollution}, number = {8}, issn = {1573-2932}, doi = {10.1007/s11270-012-1298-y}, pages = {5495 -- 5504}, abstract = {Vicinities of manufactured gas plants were often contaminated with solid iron-cyanide complexes as a result of the coal gasification process. During the remediation of affected soils, knowledge about contaminant concentrations is crucial, but laboratory methods are often expensive and time consuming. Rapid and non-destructive field methods for contaminant determination permit an analysis of large sample numbers and hence, facilitate identification of 'hot spots' of contamination. Diffuse near infrared reflectance spectroscopy has proven to be a reliable analytical tool in soil investigation. In order to determine the feasibility of a Polychromix Handheld Field Portable Near-Infrared Analyzer (FP NIR), various sample preparation methods were examined, including homogenizing, sieving, drying, and grinding. Partial least squares calibration models were developed to determine near infrared (NIR) spectral responses to the cyanide concentration in the soil samples. As a control, the contaminant concentration was determined using conventional flow injection analysis. The experiments revealed that portable near-infrared spectrometers could be a reliable device for detecting cyanide concentrations >2,400 mgkg-1 in the field and >1,750 mgkg-1 after sample preparation in the laboratory.We found that portable NIR spectrometry cannot replace traditional laboratory analyses due to high limits of detection, but that it could be used for identification of contamination 'hot spots'.}, language = {en} } @misc{SutLohmannFischerRepmannetal., author = {Sut-Lohmann, Magdalena and Fischer, Thomas and Repmann, Frank and Raab, Thomas}, title = {Long-Term Release of Iron-Cyanide Complexes from the Soil of a Manufactured Gas Plant Site}, series = {Journal of Environmental Protection}, volume = {4}, journal = {Journal of Environmental Protection}, number = {11B}, issn = {2152-2219}, doi = {10.4236/jep.2013.411A2002}, pages = {8 -- 19}, abstract = {Iron-cyanide (Fe-CN) complexes have been detected at Manufactured Gas Plant sites (MGP) worldwide. The risk of groundwater contamination depends mainly on the dissolution of ferric ferrocyanide. In order to design effective reme- diation strategies, it is relevant to understand the contaminant's fate and transport in soil, and to quantify and mathe- matically model a release rate. The release of iron-cyanide complexes from four contaminated soils, originating from the former MGP in Cottbus, has been studied by using a column experiment. Results indicated that long-term cyanide (CN) release is governed by two phases: one readily dissolved and one strongly fixed. Different isotherm and kinetic equations were used to investigate the driving mechanisms for the ferric ferrocyanide release. Applying the isotherm equations assumed an approach by which two phases were separate in time, whereas the multiple first order equation considered simultaneous occurrence of both cyanide pools. Results indicated varying CN release rates according to the phase and soil. According to isotherm and kinetic models, the long-term iron cyanide release from the MGP soils is a complex phenomenon driven by various mechanisms parallely involving desorption, diffusion and transport processes. Phase I (rapid release) is presumably mainly constrained by the transport process of readily dissolved iron-cyanide complexes combined with desorption of CN bound to reactive heterogeneous surfaces that are in direct contact with the aqueous phase (outer-sphere complexation). Phase II (limited rate) is presumably driven by the diffusion controlled processes involving dissolution of precipitated ferric ferrocyanide from the mineral or inner-sphere complexation of fer- ricyanides. CN release rates in phase I and II were mainly influenced by the pH, organic matter (OM) and the total CN content. The cyanide release rates increased with increasing pH, decreased with low initial CN concentration and were retarded by the increase in OM content.}, language = {en} } @book{BauerHaasHaggetal., author = {Bauer, Monika and Haas, Karl-Heinz and Hagg, Henning and Hartmann, Lutz and Inden, Udo and Neubauer, Frank and Pietrek, Damian and Renner, Thomas and Scheiding, Falk and Schirrmann, Arnd}, title = {Intelligentes Catering mit RFID : Prozesse, Logistik und Integration neuer Technologien im Luftfahrtcatering}, publisher = {Fraunhofer-Verlag}, address = {Stuttgart}, isbn = {978-3-8396-0206-5}, pages = {91}, language = {de} } @inproceedings{TschoepeWolffStrechaetal., author = {Tsch{\"o}pe, Constanze and Wolff, Matthias and Strecha, Guntram and Duckhorn, Frank and Feher, Thomas and Hoffmann, R{\"u}diger}, title = {Automatisierte Weichheitspr{\"u}fung von Papier}, series = {ZfP in Forschung, Entwicklung und Anwendung, Graz, 17. - 19. September 2012, DACH-Jahrestagung 2012 Zerst{\"o}rungsfreie Materialpr{\"u}fung}, booktitle = {ZfP in Forschung, Entwicklung und Anwendung, Graz, 17. - 19. September 2012, DACH-Jahrestagung 2012 Zerst{\"o}rungsfreie Materialpr{\"u}fung}, publisher = {DGZfP}, address = {Berlin}, isbn = {978-394-02834-4-3}, language = {de} } @misc{LimbergEbelPyczaketal., author = {Limberg, Wolfgang and Ebel, Thomas and Pyczak, Florian and Oehring, Michael and Schimansky, Frank-Peter}, title = {Influence of the sintering atmosphere on the mechanical properties of MIM-processed Ti 45Al 5Nb 0.2B 0.2C}, series = {Materials Science and Engineering A}, journal = {Materials Science and Engineering A}, number = {552}, pages = {323 -- 329}, language = {en} } @misc{SchlofferIqbalGabrischetal., author = {Schloffer, Martin and Iqbal, Farasat and Gabrisch, Heike and Schwaighofer, Emanuel and Schimansky, Frank-Peter and Mayer, Svea and Stark, Andreas and Lippmann, Thomas and G{\"o}ken, Mathias and Pyczak, Florian and Clemens, Helmut}, title = {Microstructure development and hardness of a powder metallurgical multi phase gamma-TiAl based alloy}, series = {Intermetallics}, journal = {Intermetallics}, number = {22}, issn = {0966-9795}, doi = {10.1016/j.intermet.2011.11.015}, pages = {231 -- 240}, language = {en} } @misc{EbelFerriLimbergetal., author = {Ebel, Thomas and Ferri, Orley Milagres and Limberg, Wolfgang and Oehring, Michael and Pyczak, Florian and Schimansky, Frank-Peter}, title = {Metal injection moulding of titanium and titanium-aluminides}, series = {Key Engineering Materials}, journal = {Key Engineering Materials}, number = {520}, issn = {1662-9795}, pages = {153 -- 160}, language = {en} } @misc{KainerEbelFerrietal., author = {Kainer, Karl Ulrich and Ebel, Thomas and Ferri, Orley Milagres and Limberg, Wolfgang and Pyczak, Florian and Schimansky, Frank-Peter}, title = {From titanium to magnesium: processing by advanced metal injection moulding}, series = {Powder Metallurgy}, volume = {55}, journal = {Powder Metallurgy}, number = {4}, pages = {315 -- 321}, language = {en} } @misc{SchlofferSchmoelzerMayeretal., author = {Schloffer, Martin and Schmoelzer, Thomas and Mayer, Svea and Schwaighofer, Emanuel and Hawranek, G. and Schimansky, Frank-Peter and Pyczak, Florian and Clemens, Helmut}, title = {The Characterisation of a Powder Metallurgically Manufactured TNM™ Titanium Aluminide Alloy Using Complimentary Quantitative Methods}, series = {Practical Metallography - Praktische Metallkunde}, volume = {48}, journal = {Practical Metallography - Praktische Metallkunde}, number = {11}, issn = {0032-678x}, doi = {10.3139/147.110138}, pages = {594 -- 604}, language = {en} } @misc{JabbarMonchouxHoudellieretal., author = {Jabbar, Houria and Monchoux, Jean-Philippe and Houdellier, Florent and Doll{\´e}, Micka{\"e}l and Schimansky, Frank-Peter and Pyczak, Florian and Thomas, Marc and Couret, Alain}, title = {Microstructure and mechanical properties of high niobium containing TiAl alloys elaborated by Spark Plasma Sintering}, series = {Intermetallics}, volume = {18}, journal = {Intermetallics}, number = {12}, issn = {0966-9795}, pages = {2312 -- 2321}, language = {en} } @misc{JohansenRudolphJensenetal., author = {Johansen, Tom K. and Rudolph, Matthias and Jensen, Thomas and Kraemer, Tomas and Weimann, Nils and Schnieder, Frank and Krozer, Viktor and Heinrich, Wolfgang}, title = {Small- and large-signal modeling of InP HBTs in transferred-substrate technology}, series = {International Journal of Microwave and Wireless Technologies}, volume = {6}, journal = {International Journal of Microwave and Wireless Technologies}, number = {3-4}, doi = {10.1017/S1759078714000051}, pages = {243 -- 251}, language = {en} } @misc{FeldmannGesslerUmmenhoferetal., author = {Feldmann, Markus and Geßler, Achim and Ummenhofer, Thomas and G{\"o}tz, Frank and Bartholom{\´e}, Susanne Elisabeth and Pasternak, Hartmut}, title = {Zum Kleben von CFK-Lamellen im Stahlbau}, series = {BTU Stahlbau-Symposium 2014, Cottbus, 2014}, journal = {BTU Stahlbau-Symposium 2014, Cottbus, 2014}, publisher = {BTU}, address = {Cottbus [u.a.]}, pages = {83 -- 90}, language = {de} } @misc{FuegKrauscheWebneretal., author = {F{\"u}g, Dieter and Krausche, Thomas and Webner, Michael and Klenner, Frank}, title = {Besonderheiten der Berechnung und konstruktiven Gestaltung von Kleinwindenergieanlagen nach DIN EN 61400-2:2006}, series = {Bauingenieur}, journal = {Bauingenieur}, number = {8}, issn = {1436-4867}, pages = {342 -- 353}, abstract = {Der steigende Energiebedarf erfordert unter Beachtung des Vorrangs erneuerbarer Energiequellen wie Wind, Wasser und Sonne die Nutzung von Konstruktionsl{\"o}sungen, die die daraus resultierende Aufgabe der Energiegewinnung wirtschaftlich umzusetzen. Im vorliegenden Beitrag wird eine L{\"o}sung beschrieben, die helfen soll, die Windenergie zur Stromerzeugung in schlecht zug{\"a}nglichen Gebieten, an Standorten mit großer Entfernung zu anderen Anlagen der Stromgewinnung oder in Gegenden f{\"u}r kleine Wohn- oder Industriebauten, wo die Wirtschaftlichkeit nachgewiesen werden kann, zu nutzen. Auch die Stromerzeugung f{\"u}r Baustellenbetrieb ist denkbar. Hierf{\"u}r k{\"o}nnen Kleinwindenergieanlagen (KWEA) eine Alternative zur Stromerzeugung sein. Der vorliegende Beitrag beinhaltet Vorschl{\"a}ge zur konstruktiven Gestaltung, Besonderheiten der Berechnung und ein Beispiel f{\"u}r die Ausf{\"u}hrung der Tragstruktur von KWEA. Grundlage f{\"u}r die Berechnung und Ausf{\"u}hrung ist die DIN EN 61400-2:2006, deren Besonderheiten mit diesem Beitrag demonstriert werden.}, language = {de} } @inproceedings{WinkelmannPokhmurskaLampkeetal., author = {Winkelmann, Ralf and Pokhmurska, Hanna and Lampke, Thomas and Pelz, Andreas and Pfeiffer, Frank}, title = {Study on abrasion wear resistance of arc sprayed iron based composite coatings with oxide ceramic particles}, series = {ITSC 2014 - International Thermal Spray Conference \& Exposition, Barcelona, 2014}, booktitle = {ITSC 2014 - International Thermal Spray Conference \& Exposition, Barcelona, 2014}, abstract = {In the present paper the results of the investigations on the improvement of the wettability between the oxide ceramic particles (SiO2 and AlZrO2) and the iron-based matrix are presented. As a possible way to overcome this problem, the deposition of thin metal bonding layer (for example, Ti) on the surface of the ceramic particles by means of PVD-method was suggested. For this purpose, novel technical solutions for deposition of the PVD-coating on the loose ceramic particles have been elaborated. The cored wires with the diameter of 1.6 mm in low alloyed steel sheath have been fabricated utilizing the PVD-coated hard particles as filling powders. Arc-spraying was carried out with the optimized spraying parameters. The microstructure and worn surface morphologies of the coatings were observed by means of optical and scanning electron microscopy. The coatings demonstrated the excellent abrasive wear resistance. Wear mechanisms have been discussed as well.}, language = {en} } @inproceedings{SchneiderKohlbecherBartletal., author = {Schneider, Erich and Kohlbecher, Stefan and Bartl, Klaus and Wallhoff, Frank and Brandt, Thomas}, title = {Experimental platform for wizard-of-oz evaluations of biomimetic active vision in robots}, series = {IEEE International Conference on Robotics and Biomimetics (ROBIO), 2009, 19 - 23 Dec. 2009, Guilin, China}, booktitle = {IEEE International Conference on Robotics and Biomimetics (ROBIO), 2009, 19 - 23 Dec. 2009, Guilin, China}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4244-4774-9}, pages = {1484 -- 1489}, language = {en} }