@article{WiegandOsburg,
  author    = {Wiegand, Torben and Osburg, Andrea},
  title     = {Synthesis, Curing and Thermal Behavior of Amine Hardeners from Potentially Renewable Sources},
  series = {Polymers},
  volume    = {2023},
  journal   = {Polymers},
  number    = {volume 15, issue 4, article 990},
  publisher = {MDPI},
  address   = {Basel},
  doi       = {10.3390/polym15040990},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63745},
  pages     = {1 -- 12},
  abstract  = {Research into bio-based epoxy resins has intensified in recent decades. Here, it is of great importance to use raw materials whose use does not compete with food production. In addition, the performance of the newly developed materials should be comparable to that of conventional products. Possible starting materials are lignin degradation products, such as vanillin and syringaldehyde, for which new synthesis routes to the desired products must be found and their properties determined. In this article, the first synthesis of two amine hardeners, starting with vanillin and syringaldehyde, using the Smiles rearrangement reaction is reported. The amine hardeners were mixed with bisphenol A diglycidyl ether, and the curing was compared to isophorone diamine, 4-4′-diaminodiphenyl sulfone, and 4-Aminonbenzylamine by means of differential scanning calorimetry. It was found that the two amines prepared are cold-curing. As TG-MS studies showed, the thermal stability of at least one of the polymers prepared with the potentially bio-based amines is comparable to that of the polymer prepared with isophorone diamine, and similar degradation products are formed during pyrolysis.},
  subject      = {Epoxide},
  language  = {en}
}
@article{PartschefeldTutalHalmansederetal.,
  author    = {Partschefeld, Stephan and Tutal, Adrian and Halmanseder, Thomas and Schneider, Jens and Osburg, Andrea},
  title     = {Investigations on Stability of Polycarboxylate Superplasticizers in Alkaline Activators for Geopolymer Binders},
  series = {Materials},
  volume    = {2023},
  journal   = {Materials},
  number    = {Volume 16, issue 15, article 5369},
  publisher = {MDPI},
  address   = {Basel},
  doi       = {10.3390/ma16155369},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231026-64809},
  pages     = {1 -- 14},
  abstract  = {Calcined clays are interesting starting materials to be used as SCMs (supplementary cementitious materials) in cements or to be converted to geopolymers by activation with a high alkaline activator. The adjustment of the properties in the fresh state, especially regarding the consistency of these binders, is almost exclusively achieved by the addition of water, since commercially available superplasticizers seem to be ineffective in low-calcium geopolymer systems. The aim of this study was a systematic investigation of various PCE (polycarboxylate ester/ether) superplasticizers (methacrylate ester PCE: MPEG, isoprenol ether PCE: IPEG, methallyl ether PCE: HPEG) with respect to their stability in different alkaline activators (NaOH, KOH, sodium and potassium silicate solutions). The effectiveness of superplasticizers (SPs) in low-calcium geopolymer binders was verified by rheological tests. Size exclusion chromatography was used to investigate if structural degradation of the superplasticizers occurs. The investigated PCE superplasticizers showed a thickening effect in the low-calcium geopolymer system. Depending on the alkalinity of the activator solution, a degradation process was detected for all the PCEs investigated. The side chains of the PCEs are cleaved off the backbone by basic ester and ether hydrolysis. The highest degree of degradation was found in sodium and potassium silicate solutions. In alkaline hydroxide solutions, the degradation process increases with increasing alkalinity.},
  subject      = {Geopolymere},
  language  = {en}
}
@article{AlsaadSchaelteSchneeweissetal.,
  author    = {Alsaad, Hayder and Sch{\"a}lte, Gereon and Schneeweiß, Mario and Becher, Lia and Pollack, Moritz and Gena, Amayu Wakoya and Schweiker, Marcel and Hartmann, Maria and Voelker, Conrad and Rossaint, Rolf and Irrgang, Matthias},
  title     = {The Spread of Exhaled Air and Aerosols during Physical Exercise},
  series = {Journal of Clinical Medicine},
  volume    = {2023},
  journal   = {Journal of Clinical Medicine},
  number    = {Volume 12, issue 4, article 1300},
  publisher = {Basel},
  address   = {MDPI},
  doi       = {10.3390/jcm12041300},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230208-49262},
  pages     = {20},
  abstract  = {Physical exercise demonstrates a special case of aerosol emission due to its associated elevated breathing rate. This can lead to a faster spread of airborne viruses and respiratory diseases. Therefore, this study investigates cross-infection risk during training. Twelve human subjects exercised on a cycle ergometer under three mask scenarios: no mask, surgical mask, and FFP2 mask. The emitted aerosols were measured in a grey room with a measurement setup equipped with an optical particle sensor. The spread of expired air was qualitatively and quantitatively assessed using schlieren imaging. Moreover, user satisfaction surveys were conducted to evaluate the comfort of wearing face masks during training. The results indicated that both surgical and FFP2 masks significantly reduced particles emission with a reduction efficiency of 87.1\% and 91.3\% of all particle sizes, respectively. However, compared to surgical masks, FFP2 masks provided a nearly tenfold greater reduction of the particle size range with long residence time in the air (0.3-0.5 μm). Furthermore, the investigated masks reduced exhalation spreading distances to less than 0.15 m and 0.1 m in the case of the surgical mask and FFP2 mask, respectively. User satisfaction solely differed with respect to perceived dyspnea between no mask and FFP2 mask conditions.},
  subject      = {Sport},
  language  = {en}
}
@article{BrokowLogaKrueger,
  author    = {Brokow-Loga, Anton and Kr{\"u}ger, Timmo},
  title     = {Potentials of Climate Emergency Declarations for degrowth transformations. The ambivalent stance of German municipalities in conflicts over a post-fossil future},
  series = {Raumforschung und Raumordnung},
  volume    = {2023},
  journal   = {Raumforschung und Raumordnung},
  number    = {Vol. 81, No. 5},
  publisher = {oekom Verlag},
  address   = {M{\"u}nchen},
  doi       = {10.14512/rur.1666},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231204-64984},
  pages     = {523 -- 537},
  abstract  = {This paper addresses the scope for action by municipalities in a climate emergency and places it in the framework of ecomodern (urban) policy. We analyse the way in which two German 'climate emergency municipalities' translate conflicts of post-fossil transformation into concrete political and planning strategies. Although more than 2,200 authorities around the world have already declared a climate emergency, research on the impact of these resolutions on the political orientation of municipalities is very limited. Our research focus is on the (potentially agonistic) treatment of conflicts in planning. We argue that in times of a socio-ecological crisis, success in conflict resolution cannot refer to appeasement and depoliticisation. Instead, we propose a framework of five criteria, based on critical theory on ecomodern strategies, planning processes and degrowth. Thus, this practice-related and explorative paper connects empirical insights from the German cities of Constance and Berlin with an innovative normative framework. The findings tell a complex story of an, at least partial, admission of the failure of previous climate mitigation strategies, a lack of social institutions of limits, an instrumental relation to nature and a disregard for social injustices. The paper discusses how municipalities, in the context of ongoing tensions over the post-fossil transformation in Germany, on the one hand hold on to business-as-usual approaches, but on the other hand also set political impulses for change.},
  subject      = {Stadtentwicklung},
  language  = {de}
}
@book{Siegler,
  author    = {Siegler, Martin},
  title     = {SOS: Medien des {\"U}berlebens. Die existenzielle Bedeutung von Lebenszeichen in Notf{\"a}llen},
  publisher = {De Gruyter},
  address   = {Berlin},
  isbn      = {978-3-11-107534-1},
  doi       = {10.1515/9783111075341},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20231026-64816},
  publisher      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {348},
  abstract  = {SOS-Signale auf hoher See, Klopfzeichen in Tr{\"u}mmerfeldern, Flaschenposten am Strand: Wenn Menschen in Not geraten, m{\"u}ssen sie mit allen Mitteln auf sich aufmerksam machen. Sie m{\"u}ssen Lebenszeichen senden, um am Leben zu bleiben. Dieses Buch erforscht das Ph{\"a}nomen des Lebenszeichens erstmals aus der Perspektive von Medienkulturwissenschaft, Zeichentheorie und Existenzphilosophie. Anhand zahlreicher Katastrophenszenarien wie Erdbeben, Lawinen und Bergwerkungl{\"u}cken zeigt die Studie, warum Menschen in Not existenziell von Medien und Kommunikationsmitteln abh{\"a}ngen: Keine Lebenszeichen ohne Signalfackeln, Peilsender, Satelliten oder Infrarotsensoren. Medien in Notf{\"a}llen sind mehr als nur Mittel zur Kommunikation, sie sind Bedingungen menschlicher Existenz. Sie entscheiden, ob und wie sich Leben in Not {\"a}ußern kann, ob Lebenszeichen Geh{\"o}r finden und ob Leben gerettet wird. Damit werfen Lebenszeichen ein neues Licht auf die elementaren Bedingungen menschlichen Lebens: Sie zeigen uns, dass Menschen in Not nur {\"u}berleben, wenn sie mit Artefakten, Netzwerken und Infrastrukturen verbunden sind, die ihre Existenz erm{\"o}glichen.},
  subject      = {Medien},
  language  = {de}
}
@article{BapirAbrahamczykWichtmannetal.,
  author    = {Bapir, Baban and Abrahamczyk, Lars and Wichtmann, Torsten and Prada-Sarmiento, Luis Felipe},
  title     = {Soil-structure interaction: A state-of-the-art review of modeling techniques and studies on seismic response of building structures},
  series = {Frontiers in Built Environment},
  volume    = {2023},
  journal   = {Frontiers in Built Environment},
  number    = {Volume 9},
  editor    = {Ozturk, Baki},
  publisher = {Frontiers Media},
  address   = {Lausanne},
  doi       = {10.3389/fbuil.2023.1120351},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230206-49190},
  pages     = {1 -- 17},
  abstract  = {The present article aims to provide an overview of the consequences of dynamic soil-structure interaction (SSI) on building structures and the available modelling techniques to resolve SSI problems. The role of SSI has been traditionally considered beneficial to the response of structures. However, contemporary studies and evidence from past earthquakes showed detrimental effects of SSI in certain conditions. An overview of the related investigations and findings is presented and discussed in this article. Additionally, the main approaches to evaluate seismic soil-structure interaction problems with the commonly used modelling techniques and computational methods are highlighted. The strength, limitations, and application cases of each model are also discussed and compared. Moreover, the role of SSI in various design codes and global guidelines is summarized. Finally, the advancements and recent findings on the SSI effects on the seismic response of buildings with different structural systems and foundation types are presented. In addition, with the aim of helping new researchers to improve previous findings, the research gaps and future research tendencies in the SSI field are pointed out.},
  subject      = {Boden-Bauwerk-Wechselwirkung},
  language  = {en}
}
@article{LondongBarthSoebke,
  author    = {Londong, J{\"o}rg and Barth, Marcus and S{\"o}bke, Heinrich},
  title     = {Reducing antimicrobial resistances by source separation of domestic wastewater},
  series = {Frontiers in Environmental Health},
  volume    = {2023},
  journal   = {Frontiers in Environmental Health},
  number    = {Volume 2, article 1151898},
  publisher = {Frontiers Media},
  address   = {Lausanne},
  doi       = {10.3389/fenvh.2023.1151898},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230403-49483},
  pages     = {1 -- 5},
  abstract  = {Antimicrobial resistances (AMR) are ranked among the top ten threats to public health and societal development worldwide. Toilet wastewater contained in domestic wastewater is a significant source of AMR entering the aquatic environment. The current commonly implemented combined sewer systems at times cause overflows during rain events, resulting in the discharge of untreated wastewater into the aquatic environment, thus promoting AMR. In this short research article, we describe an approach to transform combined sewer systems into source separation-modified combined sewer systems that separately treat toilet wastewater. We employ simulations for demonstrating that source separation-modified combined sewer systems reduce the emission of AMR- causing substances by up to 11.5 logarithm levels. Thus, source separation- modified combined sewer systems are amongst the most effective means of combating AMR. KEYWORDS},
  subject      = {Allgemeinheit},
  language  = {en}
}
@article{SanderWeissermel,
  author    = {Sander, Hendrik and Weißermel, S{\"o}ren},
  title     = {Urban Heat Transition in Berlin: Corporate Strategies, Political Conflicts, and Just Solutions},
  series = {Urban Planning},
  volume    = {2023},
  journal   = {Urban Planning},
  number    = {Volume 8, No 1},
  publisher = {Cogitatio Press},
  address   = {Lissabon},
  doi       = {10.17645/up.v8i1.6178},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63845},
  pages     = {361 -- 371},
  abstract  = {In the field of urban climate policy, heat production and demand are key sectors for achieving a sustainable city. Heat production has to shift from fossil to renewable energies, and the heat demand of most buildings has to be reduced significantly via building retrofits. However, analyses of heat transition still lack its contextualization within entangled urban politico-economic processes and materialities and require critical socio-theoretical examination. Asking about the embeddedness of heat transition within social relations and its implications for social justice issues, this article discusses the challenges and opportunities of heat transition, taking Berlin as an example. It uses an urban political ecology perspective to analyze the materialities of Berlin's heating-housing nexus, its politico-economic context, implications for relations of inequality and power, and its contested strategies. The empirical analysis identifies major disputes about the future trajectory of heat production and about the distribution of retrofit costs. Using our conceptual approach, we discuss these empirical findings against the idea of a more just heat transition. For this purpose, we discuss three policy proposals regarding cost distribution, urban heat planning, and remunicipalization of heat utilities. We argue that this conceptual approach provides huge benefits for debates around heat transition and, more generally, energy justice and just transitions.},
  subject      = {Berlin},
  language  = {en}
}
@article{Bockelmann,
  author    = {Bockelmann, Leo},
  title     = {Impacts of Change: Analysing the Perception of Industrial Heritage in the Vogtland Region},
  series = {Urban Planning},
  volume    = {2023},
  journal   = {Urban Planning},
  number    = {Volume 8, No 1},
  publisher = {Cogitatio Press},
  address   = {Lissabon},
  doi       = {10.17645/up.v8i1.6025},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63814},
  pages     = {30 -- 38},
  abstract  = {Beyond metropolitan areas, many peripheral regions and their cities in Europe have, in manifold ways, been significantly shaped by industrialisation. In the context of the relocation of industrial production to other countries over the last decades, the question has been raised as to the role this heritage can play in futural regional development as well as the potential local identification with this history. Hence, this article seeks to analyse the perception of the industrial heritage in the Vogtland region, located alongside the border of three German federal states and the Czech Republic. It inquires as to the perception of the industrial heritage by the local population and related potential future narrations. Based on spontaneous and explorative interviews with local people as an empirical base, a discrepancy between the perception of the tangible and intangible dimensions of the industrial heritage can be observed. On the one hand, the tangible heritage like older factories and production complexes are seen as a functional legacy and an "eyesore" narrative is attributed to them. On the other hand, people often reference the personal and familial connection to the industry and highlight its importance for the historical development and the wealth of the region. But these positive associations are mainly limited to the intangible dimension and are disconnected from the material artefacts of industrial production.},
  subject      = {Vogtland},
  language  = {en}
}
@article{AbrahamczykUzair,
  author    = {Abrahamczyk, Lars and Uzair, Aanis},
  title     = {On the use of climate models for estimating the non-stationary characteristic values of climatic actions in civil engineering practice},
  series = {Frontiers in Built Environment},
  volume    = {2023},
  journal   = {Frontiers in Built Environment},
  number    = {volume 9, article 1108328},
  publisher = {Frontier Media},
  address   = {Lausanne},
  doi       = {10.3389/fbuil.2023.1108328},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230524-63751},
  pages     = {1 -- 9},
  abstract  = {The characteristic values of climatic actions in current structural design codes are based on a specified probability of exceedance during the design working life of a structure. These values are traditionally determined from the past observation data under a stationary climate assumption. However, this assumption becomes invalid in the context of climate change, where the frequency and intensity of climatic extremes varies with respect to time. This paper presents a methodology to calculate the non-stationary characteristic values using state of the art climate model projections. The non-stationary characteristic values are calculated in compliance with the requirements of structural design codes by forming quasi-stationary windows of the entire bias-corrected climate model data. Three approaches for the calculation of non-stationary characteristic values considering the design working life of a structure are compared and their consequences on exceedance probability are discussed.},
  subject      = {Klima{\"a}nderung},
  language  = {en}
}