Verbundforschung

82 Items

Recent Submissions
Mixed‐Metal Monophosphate Tungsten Bronzes Containing Rhodium and Iridium

Karbstein, Alexander ; Weber, Markus ; Lahr, Dominic ; Daniels, Jörg ; Assenmacher, Wilfried ; Mader, Werner ; Rosowski, Frank ; Schunk, Stephan A. ; Glaum, Robert (2021-04-09)

Solution combustion synthesis followed by annealing in air led to the MPTB‐related phosphates (Rh1/6W5/6O3)8(PO2)4, (Ir1/6W5/6O3)8(PO2)4 (a=5.258(2) Å, b=6.538(3) Å, c=17.322(8) Å), (Rh1/9W8/9O3)12(PO2)4 and (Rh2/21W19/21O3)14(PO2)4. Single‐crystals of the mixed‐metal (Rh,W)‐MPTBs at m=4 and at m=7 were grown by chemical vapor transport (CVT). Their crystal structures have been refined from X‐r...

Acetylenic Replacement of Albicidin's Methacrylamide Residue Circumvents Detrimental E/Z Photoisomerization and Preserves Antibacterial Activity

Behroz, Iraj ; Kleebauer, Leonardo ; Hommernick, Kay ; Seidel, Maria ; Grätz, Stefan ; Mainz, Andi ; Weston, John B. ; Süssmuth, Roderich D. (2021-05-21)

The natural product albicidin is a highly potent inhibitor of bacterial DNA gyrase. Its outstanding activity, particularly against Gram‐negative pathogens, qualifies it as a promising lead structure in the search for new antibacterial drugs. However, as we show here, the N‐terminal cinnamoyl moiety of albicidin is susceptible to photochemical E/Z isomerization. Moreover, the newly formed Z isom...

Electrografted Interfaces on Metal Oxide Electrodes for Enzyme Immobilization and Bioelectrocatalysis

Harris, Tomos G. A. A. ; Heidary, Nina ; Frielingsdorf, Stefan ; Rauwerdink, Sander ; Tahraoui, Abbes ; Lenz, Oliver ; Zebger, Ingo ; Fischer, Anna (2021-03-11)

In this work, we demonstrate that diazonium electrografting of biocompatible interfaces on transparent conducting oxide indium tin oxide (ITO) can be controlled and optimized to achieve low charge transfer resistance, allowing highly efficient electron transfer to an immobilized model enzyme, the oxygen‐tolerant [NiFe]‐hydrogenase from Ralstonia eutropha. The use of a radical scavenger enables ...

Fixing up Waco, Texas: populäre Religion, das Sentimentale und die Refiguration von Räumen

Steets, Silke (2021-06)

Der Text untersucht aktuelle religiöse Transformationsprozesse in der texanischen Stadt Waco als räumlich-kommunikative Refiguration. Ausgangspunkt ist der durchschlagende TV-Erfolg der Hausrenovierungsshow Fixer Upper, die in Waco spielt, in bislang fünf Staffeln bis zu 75 Millionen ZuschauerInnen fand und vor Ort einen Tourismusboom auslöste, der zu einem erstaunlichen Imagewandel der Stadt b...

Raumakustische Messungen in sechs Aufführungsräumen: Konzerthaus / Kleiner Saal (Berlin), Jesus-Christus-Kirche (Berlin), Kloster Eberbach / Basilika (Eltville am Rhein), Renaissance-Theater (Berlin), Komische Oper (Berlin), Gewandhaus / Großer Sa...

Lindau, Alexander ; Schultz, Frank ; Horn, Michael ; Brinkmann, Fabian ; Erbes, Vera ; Fuß, Alexander ; Maempel, Hans-Joachim ; Weinzierl, Stefan (2021-06-01)

Im Rahmen der DFG-Forschergruppe FOR 1557 Simulation and Evaluation of Acoustical Environments (SEACEN) wurden die raumakustischen Eigenschaften von sechs Aufführungs-räumen messtechnisch bestimmt. Die Messungen wurden von Teilprojekt 6 (Evaluation of Virtual Acoustic Environments) durchgeführt und erfolgten in Anlehnung an DIN EN ISO 3382 – 1: 2009. In dem vorliegenden Papier sind die Raumeige...

Diurnal Changes in Hypoxia Shape Predator-Prey Interaction in a Bird-Fish System

Lukas, Juliane ; Auer, Felix ; Goldhammer, Tobias ; Krause, Jens ; Romanczuk, Pawel ; Klamser, Pascal ; Arias-Rodriguez, Lenin ; Bierbach, David (2021-03-18)

Animals often face changing environments, and behavioral flexibility allows them to rapidly and adaptively respond to abiotic factors that vary more or less regularly. However, abiotic factors that affect prey species do not necessarily affect their predators. Still, the prey’s response might affect the predator indirectly, yet evidence from the wild for such a classical bottom-up effect of abi...

Subject(ified) strategies for spatial(ised) ontological security in refigured modernity

Castillo Ulloa, Ignacio ; Schröder, David Joshua ; Helbrecht, Ilse (2021-03)

In this working paper, we elaborate on the concept of ontological security (Laing 1990 [1959]; Giddens 1990, 1991) through a spatial lens and building on the research findings of three subprojects (A01, B02 and A02) of the CRC 1265 “Re-Figuration of Spaces”. By and large, passages from lower to higher thresholds of ontological security in times of a refigured modernity (Knoblauch/Löw 2020) are,...

Design of PtZn nanoalloy catalysts for propane dehydrogenation through interface tailoring via atomic layer deposition

Ingale, Piyush ; Knemeyer, Kristian ; Preikschas, Phil ; Ye, Mengyang ; Geske, Michael ; Naumann d'Alnoncourt, Raoul ; Thomas, Arne ; Rosowski, Frank (2020-11-18)

Supported Pt nanoparticles are widely used for the catalytic dehydrogenation of propane to propene. Monometallic Pt catalysts are subject to fast deactivation. A successful strategy for stabilization is alloying Pt with a second metal. In this study, we present a novel approach for the precise formation of bimetallic nanoparticles via tailoring of the interface between metal nanoparticles and t...

Male Sexual Preference for Female Swimming Activity in the Guppy (Poecilia reticulata)

Bierbach, David ; Wenchel, Ronja ; Gehrig, Stefan ; Wersing, Serafina ; O’Connor, Olivia L. ; Krause, Jens (2021-02-12)

Mate choice that is based on behavioural traits is a common feature in the animal kingdom. Using the Trinidadian guppy, a species with mutual mate choice, we investigated whether males use female swimming activity—a behavioural trait known to differ consistently among individuals in many species—as a trait relevant for their mate choice. In the first experiment, we assessed male and female acti...

Toolbox for atomic layer deposition process development on high surface area powders

Knemeyer, Kristian ; Baumgarten, Robert ; Ingale, Piyush ; Naumann d’Alnoncourt, Raoul ; Driess, Matthias ; Rosowski, Frank (2021-02-18)

Atomic layer deposition (ALD) is an industrially applied technique for thin film deposition. The vast majority of processes target flat substrates rather than powders. For ALD on powders, new processes are needed, as different reaction conditions are required. Here, two setups are described in detail, which enhance the ALD process development for powders. The first setup described is capable of...

Consistent Behavioral Syndrome Across Seasons in an Invasive Freshwater Fish

Lukas, Juliane ; Kalinkat, Gregor ; Miesen, Friedrich Wilhelm ; Landgraf, Tim ; Krause, Jens ; Bierbach, David (2021-01-07)

Understanding the linkage between behavioral types and dispersal tendency has become a pressing issue in light of global change and biological invasions. Here, we explore whether dispersing individuals exhibit behavioral types that differ from those remaining in the source population. We investigated a feral population of guppies (Poecilia reticulata) that undergoes a yearly range shift cycle. ...

Design of an active and stable catalyst for dry reforming of methane via molecular layer deposition

Ingale, Piyush ; Guan, Chengyue ; Kraehnert, Ralph ; Raoul, Naumann d’Alnoncourt ; Thomas, Arne ; Rosowski, Frank (2020-04-30)

The dry reforming of methane (DRM) has been proposed as an efficient way to convert two greenhouse gases, namely CO2 and CH4 to syngas. However, most catalysts reported in the literature suffer from strong deactivation during the reforming reaction. The deactivation is caused by strong sintering of catalytically active nanoparticles and the formation of filamentous carbon. Herein a new synthesi...

„Patriarchy written in stone“. Ein Überblick der Forschung zu Gender und Raum im 21. Jahrhundert

Birkholz, Sina (2021-01)

Gender und Raum haben sich als zentrale Kategorien für die Analyse sozialer Phänomene durchgesetzt. Das Ziel dieses Papiers ist, die feministischen Diskussionen zu Gender und Raum seit der Jahrhundertwende zu vermessen und daraufhin zu befragen, wie Gender + Raum in ihrer Wechselwirkung konzeptualisiert und untersucht werden. Da die „Analyse des Zusammenwirkens beider Kategorien […] oftmals noc...

Mechanistic studies of atomic layer deposition on oxidation catalysts – AlOx and POx deposition

Knemeyer, Kristian ; Hermida, Mar Piernavieja ; Ingale, Piyush ; Schmidt, Johannes ; Kröhnert, Jutta ; Naumann d’Alnoncourt, Raoul ; Driess, Matthias ; Rosowski, Frank (2020-07-15)

Atomic layer deposition is a rising technique for catalyst synthesis and modification. Typically, the focus of ALD in catalysis is on supported metal nanoparticles. Here, the authors give mechanistic insights into the ALD of oxides on redox active catalysts by a combination of in situ analytics, such as XPS, DRIFTS and gravimetric measurements. Phosphorus oxide and aluminum oxide were deposited...

Atomic Layer Deposition of ZnO on Mesoporous Silica: Insights into Growth Behavior of ZnO via In-Situ Thermogravimetric Analysis

Ingale, Piyush ; Knemeyer, Kristian ; Piernavieja Hermida, Mar ; Naumann d’Alnoncourt, Raoul ; Thomas, Arne ; Rosowski, Frank (2020-05-20)

ZnO is a remarkable material with many applications in electronics and catalysis. Atomic layer deposition (ALD) of ZnO on flat substrates is an industrially applied and well-known process. Various studies describe the growth of ZnO layers on flat substrates. However, the growth characteristics and reaction mechanisms of atomic layer deposition of ZnO on mesoporous powders have not been well stu...

BIM-SPEED D2.2 BIM Family ontologies

Pinzon Amorocho, Jerson Alexis ; Hartmann, Timo (2020-10-31)

This research includes three ontological models covering different knowledge from the renovation projects field. The three ontologies comprise: the Reno-Inst Ontology: An ontology for installation of components in building renovation projects, LCA-C Ontology: An ontology for LCA/LCC assessments in renovation projects, and BEM-Reno Ontology: An ontology for BEM development in renovation projects...

BIM-Speed use case methodology toolkit

Braun, Jan-Derrick ; Steinjan, Jessica (2020-11-13)

A Use Case methodology toolkit, which enables the users to specify their main goal of the refurbishment project to identify the related business processes, use cases, methods and finally software, tools and devices to be used to collect specific data. The toolkit is provided in the form of an Excel spreadsheet to allow users to browse and select use cases.

Towards Experimental Handbooks in Catalysis

Trunschke, Annette  ; Bellini, Giulia  ; Boniface, Maxime  ; Carey, Spencer J.  ; Dong, Jinhu  ; Erdem, Ezgi  ; Foppa, Lucas  ; Frandsen, Wiebke  ; Geske, Michael  ; Ghiringhelli, Luca M.  ; Girgsdies, Frank  ; Hanna, Rania  ; Hashagen, Maike  ; Hävecker, Michael  ; Huff, Gregory  ; Knop‑Gericke, Axel  ; Koch, Gregor  ; Kraus, Peter  ; Kröhnert, Jutta  ; Kube, Pierre  ; Lohr, Stephen  ; Lunkenbein, Thomas  ; Masliuk, Liudmyla  ; Naumann d’Alnoncourt, Raoul ; Omojola, Toyin  ; Pratsch, Christoph  ; Richter, Sven  ; Rohner, Christian  ; Rosowski, Frank  ; Rüther, Frederik  ; Scheffler, Matthias  ; Schlögl, Robert  ; Tarasov, Andrey  ; Teschner, Detre  ; Timpe, Olaf  ; Trunschke, Philipp  ; Wang, Yuanqing  ; Wrabetz, Sabine  (2020-10-06)

The “Seven Pillars” of oxidation catalysis proposed by Robert K. Grasselli represent an early example of phenomenological descriptors in the field of heterogeneous catalysis. Major advances in the theoretical description of catalytic reactions have been achieved in recent years and new catalysts are predicted today by using computational methods. To tackle the immense complexity of high-perform...

BIM-SPEED D7.1 Multi-criteria decision making method and tool for housing renovation projects

Pinzon Amorocho, Jerson Alexis ; Hartmann, Timo (2020-10-31)

This tool supports the selection of suitable renovation solutions in the context of residential buildings. The tool assissts the stakeholders to define general objectives, establish the criteria to evaluate multiple alternatives, capture the preferences of diverse stakeholders involved in the decision, and to obtain a final ranking of the alternatives according to their performance on the multi...

Guppies Prefer to Follow Large (Robot) Leaders Irrespective of Own Size

Bierbach, David ; Mönck, Hauke J. ; Lukas, Juliane ; Habedank, Marie ; Romanczuk, Pawel ; Landgraf, Tim ; Krause, Jens (2020-05-15)

Body size is often assumed to determine how successfully an individual can lead others with larger individuals being better leaders than smaller ones. But even if larger individuals are more readily followed, body size often correlates with specific behavioral patterns and it is thus unclear whether larger individuals are more often followed than smaller ones because of their size or because th...