TY - GEN A1 - Gerwin, Werner A1 - Raab, Thomas A1 - Hinz, Christoph A1 - Letmathe, Peter A1 - Leuchner, Michael A1 - Roß-Nickoll, Martina A1 - Rüde, Thomas A1 - Trachte, Katja A1 - Wätzold, Frank A1 - Lehmkuhl, Frank T1 - 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? T2 - Environmental Sciences Europe N2 - 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. KW - Lignite mining KW - Ecosystem services KW - Post-mining landscapes KW - Transformation processes Y1 - 2023 U6 - https://doi.org/10.1186/s12302-023-00738-z SN - 2190-4715 VL - 35 ER - TY - GEN A1 - Lehmkuhl, Frank A1 - Gerwin, Werner A1 - Raab, Thomas A1 - Birkhofer, Klaus A1 - Hinz, Christoph A1 - Letmathe, Peter A1 - Leuchner, Michael A1 - Roß-Nickoll, Martina A1 - Rüde, Thomas R. A1 - Trachte, Katja A1 - Wätzold, Frank T1 - 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 N2 - 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., Roß-Nickoll, M., Rüde, T., Trachte, K., Wätzold, 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 Y1 - 2024 U6 - https://doi.org/10.5194/egusphere-egu24-2791 PB - Copernicus GmbH ER - TY - CHAP A1 - Sut-Lohmann, Magdalena A1 - Repmann, Frank A1 - Fischer, Thomas A1 - Raab, Thomas T1 - Retardation of iron-cyanide complexes in soils of a former Manufactured Gas Plant site T2 - Book of abstracts, XII International Congress of Young Chemists, YoungChem2014, Szczecin, Poland 8th-12th October 2014 Y1 - 2014 SN - 978-83-61037-28-6 SP - S. 44 CY - Warsaw ER - TY - RPRT A1 - Thonicke, Kirsten A1 - Rahner, Eva A1 - Arneth, Almut A1 - Bartkowski, Bartosz A1 - Bonn, Aletta A1 - Döhler, Christian A1 - Finger, Robert A1 - Freitag, Jens A1 - Grosch, Rita A1 - Grossart, Hans-Peter A1 - Grützmacher, Kim A1 - Hartman Scholz, Amber A1 - Häuser, Christoph A1 - Hickler, Thomas A1 - Hölker, Franz A1 - Jähnig, Sonja C. A1 - Jeschke, Jonathan A1 - Kassen, Rees A1 - Kastner, Thomas A1 - Kramer-Schadt, Stephanie A1 - Krug, Cornelia A1 - Lakner, Sebastian A1 - Loft, Lasse A1 - Matzdorf, Bettina A1 - Meakins, Felicity A1 - De Meester, Luc A1 - Monaghan, Michael T. A1 - Müller, Daniel A1 - Overmann, Jörg A1 - Quaas, Martin A1 - Radchuk, Viktoriia A1 - Reyer, Christopher A1 - Roos, Christian A1 - Scholz, Imme A1 - Schroer, Sibylle A1 - Sioen, Giles Bruno A1 - Sommer, Simone A1 - Sommerwerk, Nike A1 - Tockner, Klement A1 - Turk, Zachary A1 - Warner, Barbara A1 - Wätzold, Frank A1 - Wende, Wolfgang A1 - Veenstra, Tonjes A1 - Voort, Hein van de T1 - 10 Must-Knows aus der Biodiversitätsforschung Y1 - 2022 U6 - https://doi.org/10.5281/zenodo.6257476 PB - Potsdam-Institut für Klimafolgenforschung e.V. (PIK) CY - Potsdam ER - TY - CHAP A1 - Sut-Lohmann, Magdalena A1 - Fischer, Thomas A1 - Repmann, Frank A1 - Raab, Thomas T1 - Feasibility of field portable near infrared (NIR) spectroscopy to determine cyanide concentrations in soil T2 - European Geosciences Union, General Assembly 2013, Vienna, Austria, 07 – 12 April 2013 N2 - 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. Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-1986.pdf N1 - EGU2013-1986 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Sut-Lohmann, Magdalena A1 - Fischer, Thomas A1 - Repmann, Frank A1 - Raab, Thomas A1 - Dimitrova, Tsvetelina T1 - Feasibility of field portable near infrared (NIR) spectroscopy to determine cyanide concentrations in soil T2 - Water, Air and Soil Pollution N2 - 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’. Y1 - 2012 U6 - https://doi.org/10.1007/s11270-012-1298-y SN - 1573-2932 VL - 223 IS - 8 SP - 5495 EP - 5504 ER - TY - GEN A1 - Sut-Lohmann, Magdalena A1 - Fischer, Thomas A1 - Repmann, Frank A1 - Raab, Thomas T1 - Long-Term Release of Iron-Cyanide Complexes from the Soil of a Manufactured Gas Plant Site T2 - Journal of Environmental Protection N2 - 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. Y1 - 2013 U6 - https://doi.org/10.4236/jep.2013.411A2002 SN - 2152-2219 VL - 4 IS - 11B SP - 8 EP - 19 ER - TY - BOOK A1 - Bauer, Monika A1 - Haas, Karl-Heinz A1 - Hagg, Henning A1 - Hartmann, Lutz A1 - Inden, Udo A1 - Neubauer, Frank A1 - Pietrek, Damian A1 - Renner, Thomas A1 - Scheiding, Falk A1 - Schirrmann, Arnd T1 - Intelligentes Catering mit RFID : Prozesse, Logistik und Integration neuer Technologien im Luftfahrtcatering Y1 - 2010 SN - 978-3-8396-0206-5 PB - Fraunhofer-Verlag CY - Stuttgart ER - TY - CHAP A1 - Tschöpe, Constanze A1 - Wolff, Matthias A1 - Strecha, Guntram A1 - Duckhorn, Frank A1 - Feher, Thomas A1 - Hoffmann, Rüdiger T1 - Automatisierte Weichheitsprüfung von Papier T2 - ZfP in Forschung, Entwicklung und Anwendung, Graz, 17. - 19. September 2012, DACH-Jahrestagung 2012 Zerstörungsfreie Materialprüfung Y1 - 2012 SN - 978-394-02834-4-3 PB - DGZfP CY - Berlin ER - TY - GEN A1 - Limberg, Wolfgang A1 - Ebel, Thomas A1 - Pyczak, Florian A1 - Oehring, Michael A1 - Schimansky, Frank-Peter T1 - Influence of the sintering atmosphere on the mechanical properties of MIM-processed Ti 45Al 5Nb 0.2B 0.2C T2 - Materials Science and Engineering A Y1 - 2012 IS - 552 SP - 323 EP - 329 ER - TY - GEN A1 - Schloffer, Martin A1 - Iqbal, Farasat A1 - Gabrisch, Heike A1 - Schwaighofer, Emanuel A1 - Schimansky, Frank-Peter A1 - Mayer, Svea A1 - Stark, Andreas A1 - Lippmann, Thomas A1 - Göken, Mathias A1 - Pyczak, Florian A1 - Clemens, Helmut T1 - Microstructure development and hardness of a powder metallurgical multi phase gamma-TiAl based alloy T2 - Intermetallics Y1 - 2012 U6 - https://doi.org/10.1016/j.intermet.2011.11.015 SN - 0966-9795 IS - 22 SP - 231 EP - 240 ER - TY - GEN A1 - Ebel, Thomas A1 - Ferri, Orley Milagres A1 - Limberg, Wolfgang A1 - Oehring, Michael A1 - Pyczak, Florian A1 - Schimansky, Frank-Peter T1 - Metal injection moulding of titanium and titanium-aluminides T2 - Key Engineering Materials Y1 - 2012 SN - 1662-9795 IS - 520 SP - 153 EP - 160 ER - TY - GEN A1 - Kainer, Karl Ulrich A1 - Ebel, Thomas A1 - Ferri, Orley Milagres A1 - Limberg, Wolfgang A1 - Pyczak, Florian A1 - Schimansky, Frank-Peter T1 - From titanium to magnesium: processing by advanced metal injection moulding T2 - Powder Metallurgy Y1 - 2012 VL - 55 IS - 4 SP - 315 EP - 321 ER - TY - GEN A1 - Schloffer, Martin A1 - Schmoelzer, Thomas A1 - Mayer, Svea A1 - Schwaighofer, Emanuel A1 - Hawranek, G. A1 - Schimansky, Frank-Peter A1 - Pyczak, Florian A1 - Clemens, Helmut T1 - The Characterisation of a Powder Metallurgically Manufactured TNM™ Titanium Aluminide Alloy Using Complimentary Quantitative Methods T2 - Practical Metallography - Praktische Metallkunde Y1 - 2011 U6 - https://doi.org/10.3139/147.110138 SN - 0032-678x VL - 48 IS - 11 SP - 594 EP - 604 ER - TY - GEN A1 - Jabbar, Houria A1 - Monchoux, Jean-Philippe A1 - Houdellier, Florent A1 - Dollé, Mickaël A1 - Schimansky, Frank-Peter A1 - Pyczak, Florian A1 - Thomas, Marc A1 - Couret, Alain T1 - Microstructure and mechanical properties of high niobium containing TiAl alloys elaborated by Spark Plasma Sintering T2 - Intermetallics Y1 - 2010 SN - 0966-9795 VL - 18 IS - 12 SP - 2312 EP - 2321 ER - TY - GEN A1 - Johansen, Tom K. A1 - Rudolph, Matthias A1 - Jensen, Thomas A1 - Kraemer, Tomas A1 - Weimann, Nils A1 - Schnieder, Frank A1 - Krozer, Viktor A1 - Heinrich, Wolfgang T1 - Small- and large-signal modeling of InP HBTs in transferred-substrate technology T2 - International Journal of Microwave and Wireless Technologies Y1 - 2014 U6 - https://doi.org/10.1017/S1759078714000051 VL - 6 IS - 3-4 SP - 243 EP - 251 ER - TY - GEN A1 - Feldmann, Markus A1 - Geßler, Achim A1 - Ummenhofer, Thomas A1 - Götz, Frank A1 - Bartholomé, Susanne Elisabeth A1 - Pasternak, Hartmut T1 - Zum Kleben von CFK-Lamellen im Stahlbau T2 - BTU Stahlbau-Symposium 2014, Cottbus, 2014 Y1 - 2014 SP - 83 EP - 90 PB - BTU CY - Cottbus [u.a.] ER - TY - GEN A1 - Füg, Dieter A1 - Krausche, Thomas A1 - Webner, Michael A1 - Klenner, Frank T1 - Besonderheiten der Berechnung und konstruktiven Gestaltung von Kleinwindenergieanlagen nach DIN EN 61400–2:2006 T2 - Bauingenieur N2 - Der steigende Energiebedarf erfordert unter Beachtung des Vorrangs erneuerbarer Energiequellen wie Wind, Wasser und Sonne die Nutzung von Konstruktionslösungen, die die daraus resultierende Aufgabe der Energiegewinnung wirtschaftlich umzusetzen. Im vorliegenden Beitrag wird eine Lösung beschrieben, die helfen soll, die Windenergie zur Stromerzeugung in schlecht zugänglichen Gebieten, an Standorten mit großer Entfernung zu anderen Anlagen der Stromgewinnung oder in Gegenden für kleine Wohn- oder Industriebauten, wo die Wirtschaftlichkeit nachgewiesen werden kann, zu nutzen. Auch die Stromerzeugung für Baustellenbetrieb ist denkbar. Hierfür können Kleinwindenergieanlagen (KWEA) eine Alternative zur Stromerzeugung sein. Der vorliegende Beitrag beinhaltet Vorschläge zur konstruktiven Gestaltung, Besonderheiten der Berechnung und ein Beispiel für die Ausführung der Tragstruktur von KWEA. Grundlage für die Berechnung und Ausführung ist die DIN EN 61400–2:2006, deren Besonderheiten mit diesem Beitrag demonstriert werden. KW - Stahlbau KW - Windenergieanlagen Y1 - 2012 UR - http://www.bauingenieur.de/bauing/article.php?data[article_id]=68732 SN - 1436-4867 IS - 8 SP - 342 EP - 353 ER - TY - CHAP A1 - Winkelmann, Ralf A1 - Pokhmurska, Hanna A1 - Lampke, Thomas A1 - Pelz, Andreas A1 - Pfeiffer, Frank T1 - Study on abrasion wear resistance of arc sprayed iron based composite coatings with oxide ceramic particles T2 - ITSC 2014 - International Thermal Spray Conference & Exposition, Barcelona, 2014 N2 - 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. KW - arc sprayed iron based composite coatings KW - oxide ceramic particles KW - wear resistance Y1 - 2014 UR - https://www.dvs-ev.de/call4papers/abstract.cfm?pid=3883&vid=69&show=poster UR - https://www.dvs-ev.de/call4papers/postersessionsITSC2014.cfm?vid=69 ER - TY - CHAP A1 - Schneider, Erich A1 - Kohlbecher, Stefan A1 - Bartl, Klaus A1 - Wallhoff, Frank A1 - Brandt, Thomas T1 - Experimental platform for wizard-of-oz evaluations of biomimetic active vision in robots T2 - IEEE International Conference on Robotics and Biomimetics (ROBIO), 2009, 19 - 23 Dec. 2009, Guilin, China Y1 - 2009 SN - 978-1-4244-4774-9 SN - 978-1-4244-4775-6 SP - 1484 EP - 1489 PB - IEEE CY - Piscataway, NJ ER -