@misc{GaeblerBerberyanPrieskeetal.2022, author = {G{\"a}bler, Martijn and Berberyan, Hermine S. and Prieske, Olaf and Elferink-Gemser, Marije Titia and Hortobagyi, Tibor and Warnke, Torsten and Granacher, Urs}, title = {Strength Training Intensity and Volume Affect Performance of Young Kayakers/Canoeists}, series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {1866-8364}, doi = {10.25932/publishup-54228}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-542283}, pages = {1 -- 10}, year = {2022}, abstract = {Purpose: The aim of this study was to compare the effects of moderate intensity, low volume (MILV) vs. low intensity, high volume (LIHV) strength training on sport-specific performance, measures of muscular fitness, and skeletal muscle mass in young kayakers and canoeists. Methods: Semi-elite young kayakers and canoeists (N = 40, 13 ± 0.8 years, 11 girls) performed either MILV (70-80\% 1-RM, 6-12 repetitions per set) or LIHV (30-40\% 1-RM, 60-120 repetitions per set) strength training for one season. Linear mixed-effects models were used to compare effects of training condition on changes over time in 250 and 2,000 m time trials, handgrip strength, underhand shot throw, average bench pull power over 2 min, and skeletal muscle mass. Both between- and within-subject designs were used for analysis. An alpha of 0.05 was used to determine statistical significance. Results: Between- and within-subject analyses showed that monthly changes were greater in LIHV vs. MILV for the 2,000 m time trial (between: 9.16 s, SE = 2.70, p < 0.01; within: 2,000 m: 13.90 s, SE = 5.02, p = 0.01) and bench pull average power (between: 0.021 W⋅kg-1, SE = 0.008, p = 0.02; within: 0.010 W⋅kg-1, SE = 0.009, p > 0.05). Training conditions did not affect other outcomes. Conclusion: Young sprint kayakers and canoeists benefit from LIHV more than MILV strength training in terms of 2,000 m performance and muscular endurance (i.e., 2 min bench pull power).}, language = {en} } @misc{CarlaUhink2022, author = {Carl{\`a}-Uhink, Filippo}, title = {Rezension zu: Riggsby, Andrew M.: Mosaics of Knowledge. Representing Information in the Roman World. - New York, NY: Oxford University Press, 2019. - XVI, 248 S. - ISBN: 978-0-19-063250-2}, series = {Gnomon}, volume = {94}, journal = {Gnomon}, number = {2}, publisher = {M{\"u}nchen}, address = {Beck}, issn = {0017-1417}, doi = {10.17104/0017-1417-2022-2}, pages = {182 -- 184}, year = {2022}, language = {de} } @article{Rieck2022, author = {Rieck, Christian E.}, title = {Strange New Worlds}, series = {European Strategic Approaches to the Indo-Pacific}, volume = {2021}, journal = {European Strategic Approaches to the Indo-Pacific}, number = {1}, publisher = {Konrad-Adenauer-Stiftung}, address = {Singapore}, issn = {0119-5204}, pages = {39 -- 53}, year = {2022}, abstract = {The Indo-Pacific is fast becoming the main arena for great power competition. After explaining the regional power hierarchy, the paper describes how the EU defines like-mindedness as an explicit partnership category in the Indo-Pacific and which of the countries qualify. Finally, the paper also examines the structural problems the EU faces when projecting power into a faraway region such as this one. The paper argues that for China's rise to remain peaceful and in the absence of fully regional security arrangements, other Asian actors are increasingly looking for new regional structures that combine elements of cooperation, competition and containment vis-{\`a}-vis China - including a more pronounced EU role in the region.}, language = {en} } @article{Reiners2022, author = {Reiners, Nina}, title = {Transnational lawmaking coalitions for human rights}, publisher = {Cambridge University Press}, address = {Cambridge}, isbn = {978-1-108-97676-3}, doi = {10.1017/9781108976763}, pages = {198}, year = {2022}, abstract = {Transnational Lawmaking Coalitions is the first comprehensive analysis of the role and impact of informal collaborations in the UN human rights treaty bodies. Issues as central to international human rights as the right to water, abortion, torture, and hate speech are often only clarified through the instrument of treaty interpretations. This book dives beneath the surface of the formal access, procedures, and actors of the UN treaty body system to reveal how the experts and external collaborators play a key role in the development of human rights. Nina Reiners introduces the concept of 'Transnational Lawmaking Coalitions' within a novel theoretical framework and draws on a number of detailed case studies and original data. This study makes a significant contribution to the scholarship on human rights, transnational actors, and international organizations, and contributes to broader debates in international relations and international law}, language = {de} } @article{Juchler2022, author = {Juchler, Ingo}, title = {Von Menschen und anderen Tieren im Berliner Tiergarten}, series = {Atopien im Politischen : Politische Bildung nach dem Ende der Zukunft}, journal = {Atopien im Politischen : Politische Bildung nach dem Ende der Zukunft}, publisher = {Transcript}, address = {Bielefeld}, isbn = {978-3-8376-5201-7}, pages = {105 -- 132}, year = {2022}, language = {de} } @article{KosmanHadad2022, author = {Kosman, Admiʾel and Hadad, Yemima}, title = {The societal role of the man of spirit according to Martin Buber}, series = {Hebrew Union College annual / Jewish Institute of Religion : HUCA}, volume = {91}, journal = {Hebrew Union College annual / Jewish Institute of Religion : HUCA}, publisher = {College}, address = {Cincinnati}, issn = {0360-9049}, doi = {10.15650/hebruniocollannu.91.2020.0207}, pages = {207 -- 259}, year = {2022}, abstract = {This study offers a view into Buber's conception of the social role of the "person of spirit" - the individual who, in other contexts, would be called philosopher, thinker, or intellectual.A key element of the person of spirit's role, according to Buber, is the evaluation of social reality - judging the public's ability to be guided by the realm of the spirit at any given hour while responding to the challenges that this particular hour may present. The person of spirit is required to constantly mediate between "heaven" and "earth" - between the ideal and reality - even if in a particular situation the moral action which has to be taken can only be partial, and will fall short of the absolute demand of the spirit.Buber emphasizes that the influence of the spirit on reality always begins with an effort of the "person of spirit" to transform him or herself from a monological to a dialogical person. Without a dialogical affinity between the person of spirit and their community, there can be no real effect of the spirit on reality.The person of spirit is, therefore, according to Buber, fully involved in the social life of the community. Our study shows that Buber shaped this figure of the "person of spirit" by combining the model of the biblical prophet, who is sent to the people, with the model of the Hasidic leader who acts according to the principle of the "Descent of the Zaddik." The person of spirit is required to live their life in a "Thou" relationship with their community, and is therefore frequently descending from an elevated spiritual level to the level of the people, in order to empathetically share their mundane worries, fears, and afflictions.By comparing the models of the biblical prophet and the Hassidic Zaddik to the model of the Greek prophetes and Plato's philosopher-king, we can, according to Buber, reflect on the role of the person of spirit in society in our time as well.}, language = {en} } @phdthesis{Nie2022, author = {Nie, Yan}, title = {Modulating keratinocyte and induced pluripotent stem cell behavior by microenvironment design or temperature control}, pages = {xiv, 100}, year = {2022}, abstract = {Under the in vivo condition, a cell is continually interacting with its surrounding microenvironment, which is composed of its neighboring cells and the extracellular matrix (ECM). These components generate and transmit the microenvironmental signals to regulate the fate and function of the target cells. Except the signals from the microenvironment, stimuli from the ambient environment, such as temperature changes, also play an important in modulating the cell behaviors, which are considered as regulators from the macroenvironment. In this regard, recapitulation of these environmental factors to steer cell function will be of crucial importance for therapeutic purposes and tissue regeneration. Although the role of a variety of environmental factors has been evaluated, it is still challenging to identify and provide the appropriate factors, which are required for optimizing the survival of cells and for ensuring effective cell functions. Thus, in vitro recreating the environmental factors that are present in the extracellular environment would help to understand the mechanism of how cells sense and process those environmental signals. In this context, this thesis is aimed to harness these environmental parameters to guide cell responses. Here, human induced pluripotent stem cells (hiPSCs) and human keratinocytes (KTCs), HaCaT cells, were used to investigate the impact of signals from the microenvironment or stimuli from the macroenvironment. Firstly, polydopamine (PDA) or chitosan (CS) modifications were applied to generate different substrate surfaces for hiPSCs and KTCs (Chapter 4 to Chapter 6). Our results showed that the PDA modification was efficient to increase the cell-substrate adhesion and consequently promoted cell spreading. While CS modification was able to decrease the cell-substrate adhesion and enhance the cell-cell interaction, which enabled the morphology shift from monolayered cells to multicellular spheroids. The quantitative result was acquired using the atomic force microscopy (AFM)-based single-cell force spectroscopy. The balance between the cell-substrate and cell-cell adhesion yielded a net force, which determined the preference of the cell to adhere to its neighboring cells or to the substrate. The difference in the adhesive behaviors further affected the cellular function, such as the proliferation and differentiation potential of both hiPSCs and HaCaT cells. Next, the cyclic temperature changes (ΔT) were selected here to study the influence of macroenvironmental stimuli on hiPSCs and KTCs (Chapter 7 and Chapter 8). The macroenvironmental temperature ranging from 10.0 ± 0.1 °C to 37.0 ± 0.1 °C was achieved using a thermal chamber equipped with a temperature controller. This temperature range was selected to explore the responses of hiPSCs to the extreme environments, while a temperature variation between 25.0 ± 0.1 °C and 37.0 ± 0.1 °C was applied to mimic the ambient temperature variations experienced by the skin epithelial KTCs. The ΔT led to cell stiffening in both hiPSCs and HaCaT cells in a cytoskeleton-dependent manner, which was measured by AFM. Specifically, in hiPSCs, the cell stiffening was resulted from the rearrangement of the actin skeleton; in HaCaT cells, was due to the difference of the Keratin (KRT) filaments. Except for inducing cell hardening, ΔT also caused differences in the protein expression profiles in hiPSCs or HaCaT cells, compared to those without ΔT treatment, which might be attributed to the alterations in their cytoskeleton structures. To sum up, the results of the thesis demonstrated how individual factors from the micro-/macro-environment can be harnessed to modulate the behaviors of hiPSCs and HaCaT cells. Engineering the microenvironmental cues using surface modification and exploiting the macroenvironmental stimuli through temperature control were identified as precise and potent approaches to steer hiPSC and HaCaT cell behaviors. The application of AFM served as a non-invasive and real-time monitoring platform to trace the change in cell topography and mechanics induced by the environmental signals, which provide novel insights into the cell-environment interactions.}, language = {en} } @phdthesis{Elsaid2022, author = {Elsaid, Mohamed Esameldin Mohamed}, title = {Virtual machines live migration cost modeling and prediction}, doi = {10.25932/publishup-54001}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-540013}, school = {Universit{\"a}t Potsdam}, pages = {xiv, 107}, year = {2022}, abstract = {Dynamic resource management is an essential requirement for private and public cloud computing environments. With dynamic resource management, the physical resources assignment to the cloud virtual resources depends on the actual need of the applications or the running services, which enhances the cloud physical resources utilization and reduces the offered services cost. In addition, the virtual resources can be moved across different physical resources in the cloud environment without an obvious impact on the running applications or services production. This means that the availability of the running services and applications in the cloud is independent on the hardware resources including the servers, switches and storage failures. This increases the reliability of using cloud services compared to the classical data-centers environments. In this thesis we briefly discuss the dynamic resource management topic and then deeply focus on live migration as the definition of the compute resource dynamic management. Live migration is a commonly used and an essential feature in cloud and virtual data-centers environments. Cloud computing load balance, power saving and fault tolerance features are all dependent on live migration to optimize the virtual and physical resources usage. As we will discuss in this thesis, live migration shows many benefits to cloud and virtual data-centers environments, however the cost of live migration can not be ignored. Live migration cost includes the migration time, downtime, network overhead, power consumption increases and CPU overhead. IT admins run virtual machines live migrations without an idea about the migration cost. So, resources bottlenecks, higher migration cost and migration failures might happen. The first problem that we discuss in this thesis is how to model the cost of the virtual machines live migration. Secondly, we investigate how to make use of machine learning techniques to help the cloud admins getting an estimation of this cost before initiating the migration for one of multiple virtual machines. Also, we discuss the optimal timing for a specific virtual machine before live migration to another server. Finally, we propose practical solutions that can be used by the cloud admins to be integrated with the cloud administration portals to answer the raised research questions above. Our research methodology to achieve the project objectives is to propose empirical models based on using VMware test-beds with different benchmarks tools. Then we make use of the machine learning techniques to propose a prediction approach for virtual machines live migration cost. Timing optimization for live migration is also proposed in this thesis based on using the cost prediction and data-centers network utilization prediction. Live migration with persistent memory clusters is also discussed at the end of the thesis. The cost prediction and timing optimization techniques proposed in this thesis could be practically integrated with VMware vSphere cluster portal such that the IT admins can now use the cost prediction feature and timing optimization option before proceeding with a virtual machine live migration. Testing results show that our proposed approach for VMs live migration cost prediction shows acceptable results with less than 20\% prediction error and can be easily implemented and integrated with VMware vSphere as an example of a commonly used resource management portal for virtual data-centers and private cloud environments. The results show that using our proposed VMs migration timing optimization technique also could save up to 51\% of migration time of the VMs migration time for memory intensive workloads and up to 27\% of the migration time for network intensive workloads. This timing optimization technique can be useful for network admins to save migration time with utilizing higher network rate and higher probability of success. At the end of this thesis, we discuss the persistent memory technology as a new trend in servers memory technology. Persistent memory modes of operation and configurations are discussed in detail to explain how live migration works between servers with different memory configuration set up. Then, we build a VMware cluster with persistent memory inside server and also with DRAM only servers to show the live migration cost difference between the VMs with DRAM only versus the VMs with persistent memory inside.}, language = {en} } @article{Berndt2022, author = {Berndt, Stephan}, title = {Das F{\"u}hren eines Fahrzeugs im Strafrecht}, series = {Schriften zum Strafrecht ; 384}, journal = {Schriften zum Strafrecht ; 384}, publisher = {Duncker \& Humblot}, address = {Berlin}, isbn = {978-3-428-18462-0}, doi = {10.3790/978-3-428-58462-8}, pages = {380}, year = {2022}, abstract = {Das F{\"u}hren eines Fahrzeugs wird seit jeher als ein menschengesteuerter Vorgang angesehen. Entsprechend etablierte sich in der Gesetzgebung das Dogma der menschlichen Fahrzeugf{\"u}hrung, welches sich jedoch seit der Existenz von hoch- und vollautomatisierten Fahrerassistenzsystemen auf dem Pr{\"u}fstand befindet. Der Autor nimmt sich dem in strafrechtlicher Hinsicht mit Blick auf die F{\"u}hrungsdelikte des StGB unter reflektierender Betrachtung der Regelungen des StVG an. Rechtlicher Ausgangspunkt ist die Auswertung der uneinheitlichen und kasuistischen Rechtsprechung zum Fahrzeugf{\"u}hren. Die daraus abgeleitete Notwendigkeit einer analytischen Betrachtung der Arbeitsaufgabe der Fahrzeugf{\"u}hrung m{\"u}ndete schließlich in die Entwicklung eines neuen Definitionsvorschlags. Dessen Mehrwert wird anschließend an der Strafrechtsdogmatik, insbesondere am Eigenh{\"a}ndigkeitsdogma und der unechten Unterlassungsstrafbarkeit, gemessen und durch die Bezugnahme von sog. Use-Cases des automatisierten Fahrens verdeutlicht.}, language = {de} } @phdthesis{Youk2022, author = {Youk, Sol}, title = {Molecular design of heteroatom-doped nanoporous carbons with controlled porosity and surface polarity for gas physisorption and energy storage}, doi = {10.25932/publishup-53909}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-539098}, school = {Universit{\"a}t Potsdam}, pages = {145}, year = {2022}, abstract = {The world energy consumption has constantly increased every year due to economic development and population growth. This inevitably caused vast amount of CO2 emission, and the CO2 concentration in the atmosphere keeps increasing with economic growth. To reduce CO2 emission, various methods have been developed but there are still many bottlenecks to be solved. Solvents easily absorbing CO2 such as monoethanol-amine (MEA) and diethanolamine, for example, have limitations of solvent loss, amine degradation, vulnerability to heat and toxicity, and the high cost of regeneration which is especially caused due to chemisorption process. Though some of these drawbacks can be compensated through physisorption with zeolites and metal-organic frameworks (MOFs) by displaying significant adsorption selectivity and capacity even in ambient conditions, limitations for these materials still exist. Zeolites demand relatively high regeneration energy and have limited adsorption kinetics due to the exceptionally narrow pore structure. MOFs have low stability against heat and moisture and high manufacturing cost. Nanoporous carbons have recently received attention as an attractive functional porous material due to their unique properties. These materials are crucial in many applications of modern science and industry such as water and air purification, catalysis, gas separation, and energy storage/conversion due to their high chemical and thermal stability, and in particular electronic conductivity in combination with high specific surface areas. Nanoporous carbons can be used to adsorb environmental pollutants or small gas molecules such as CO2 and to power electrochemical energy storage devices such as batteries and fuel cells. In all fields, their pore structure or electrical properties can be modified depending on their purposes. This thesis provides an in-depth look at novel nanoporous carbons from the synthetic and the application point of view. The interplay between pore structure, atomic construction, and the adsorption properties of nanoporous carbon materials are investigated. Novel nanoporous carbon materials are synthesized by using simple precursor molecules containing heteroatoms through a facile templating method. The affinity, and in turn the adsorption capacity, of carbon materials toward polar gas molecules (CO2 and H2O) is enhanced by the modification of their chemical construction. It is also shown that these properties are important in electrochemical energy storage, here especially for supercapacitors with aqueous electrolytes which are basically based on the physisorption of ions on carbon surfaces. This shows that nanoporous carbons can be a "functional" material with specific physical or chemical interactions with guest species just like zeolites and MOFs. The synthesis of sp2-conjugated materials with high heteroatom content from a mixture of citrazinic acid and melamine in which heteroatoms are already bonded in specific motives is illustrated. By controlling the removal procedure of the salt-template and the condensation temperature, the role of salts in the formation of porosity and as coordination sites for the stabilization of heteroatoms is proven. A high amount of nitrogen of up to 20 wt. \%, oxygen contents of up to 19 wt.\%, and a high CO2/N2 selectivity with maximum CO2 uptake at 273 K of 5.31 mmol g-1 are achieved. Besides, the further controlled thermal condensation of precursor molecules and advanced functional properties on applications of the synthesized porous carbons are described. The materials have different porosity and atomic construction exhibiting a high nitrogen content up to 25 wt. \% as well as a high porosity with a specific surface area of more than 1800 m2 g-1, and a high performance in selective CO2 gas adsorption of 62.7. These pore structure as well as properties of surface affect to water adsorption with a remarkably high Qst of over 100 kJ mol-1 even higher than that of zeolites or CaCl2 well known as adsorbents. In addition to that, the pore structure of HAT-CN-derived carbon materials during condensation in vacuum is fundamentally understood which is essential to maximize the utilization of porous system in materials showing significant difference in their pore volume of 0.5 cm3 g-1 and 0.25 cm3 g-1 without and with vacuum, respectively. The molecular designs of heteroatom containing porous carbon derived from abundant and simple molecules are introduced in the presented thesis. Abundant precursors that already containing high amount of nitrogen or oxygen are beneficial to achieve enhanced interaction with adsorptives. The physical and chemical properties of these heteroatom-doped porous carbons are affected by mainly two parameters, that is, the porosity from the pore structure and the polarity from the atomic composition on the surface. In other words, controlling the porosity as well as the polarity of the carbon materials is studied to understand interactions with different guest species which is a fundamental knowledge for the utilization on various applications.}, language = {en} } @phdthesis{Omranian2022, author = {Omranian, Sara}, title = {Novel algorithms for prediction of protein complexes from protein-protein interacton networks}, school = {Universit{\"a}t Potsdam}, pages = {123}, year = {2022}, language = {en} } @phdthesis{Altieri2022, author = {Altieri, Riccardo}, title = {Antifaschisten, das waren wir ...}, series = {Alternative Biografien ; 1}, journal = {Alternative Biografien ; 1}, publisher = {B{\"u}chner}, address = {Marburg}, isbn = {978-3-96317-282-3}, pages = {56}, year = {2022}, language = {de} } @article{SchwarzenthalSchachnerJuang2022, author = {Schwarzenthal, Miriam and Schachner, Maja Katharina and Juang, Linda P.}, title = {F{\"u}r ein besseres Miteinander}, series = {Aufwachsen mit Anderen : Peerbeziehungen als Bildungsfaktor}, journal = {Aufwachsen mit Anderen : Peerbeziehungen als Bildungsfaktor}, publisher = {Kohlhammer}, address = {Stuttgart}, isbn = {978-3-17-036682-4}, pages = {176 -- 189}, year = {2022}, language = {de} } @article{WilbertKrull2022, author = {Wilbert, J{\"u}rgen and Krull, Johanna}, title = {Die Bedeutung von Peers f{\"u}r die soziale Teilhabe von Lernenden mit Lern- und Verhaltensauff{\"a}lligkeiten in inklusiven Schulklassen}, series = {Aufwachsen mit Anderen : Peerbeziehungen als Bildungsfaktor}, journal = {Aufwachsen mit Anderen : Peerbeziehungen als Bildungsfaktor}, publisher = {Kohlhammer}, address = {Stuttgart}, isbn = {978-3-17-036680-0}, pages = {134 -- 149}, year = {2022}, language = {de} } @misc{Schenck2022, author = {Schenck, Marcia C.}, title = {Rezension zu: Lingelbach, Jochen : On the Edges of Whiteness: Polish Refugees in British Colonial Africa during and after the Second World War. - New York: Berghahn, 2020. - 306 S. - ISBN 978-1-78920-444-5}, series = {Revue d'histoire Contemporaine De l'Afrique}, journal = {Revue d'histoire Contemporaine De l'Afrique}, publisher = {Université de Genève}, address = {Genève}, issn = {2673-7604}, doi = {10.51185/journals/rhca.2022.cr01}, pages = {3}, year = {2022}, language = {en} } @techreport{CaliendoCobbClarkPfeiferetal.2022, type = {Working Paper}, author = {Caliendo, Marco and Cobb-Clark, Deborah A. and Pfeifer, Harald and Uhlendorff, Arne and Wehner, Caroline}, title = {Managers' Risk Preferences and Firm Training Investments}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {44}, issn = {2628-653X}, doi = {10.25932/publishup-53843}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-538439}, pages = {45}, year = {2022}, abstract = {We provide the first estimates of the impact of managers' risk preferences on their training allocation decisions. Our conceptual framework links managers' risk preferences to firms' training decisions through the bonuses they expect to receive. Risk-averse managers are expected to select workers with low turnover risk and invest in specific rather than general training. Empirical evidence supporting these predictions is provided using a novel vignette study embedded in a nationally representative survey of firm managers. Risk-tolerant and risk-averse decision makers have significantly different training preferences. Risk aversion results in increased sensitivity to turnover risk. Managers who are risk-averse offer significantly less general training and, in some cases, are more reluctant to train workers with a history of job mobility. All managers, irrespective of their risk preferences, are sensitive to the investment risk associated with training, avoiding training that is more costly or targets those with less occupational expertise or nearing retirement. This suggests the risks of training are primarily due to the risk that trained workers will leave the firm (turnover risk) rather than the risk that the benefits of training do not outweigh the costs (investment risk).}, language = {en} } @article{RiedererVerwiebeAhn2022, author = {Riederer, Bernhard Edwin and Verwiebe, Roland and Ahn, Byeongsun}, title = {Professionalisation, polarisation or both?}, series = {Vienna}, journal = {Vienna}, publisher = {Routledge}, address = {Berlin}, isbn = {978-0-367-68011-4}, doi = {10.4324/9781003133827-10}, pages = {99 -- 114}, year = {2022}, language = {en} } @article{KazepovVerwiebe2022, author = {Kazepov, Yuri and Verwiebe, Roland}, title = {Is Vienna still a just city?}, series = {Vienna}, journal = {Vienna}, publisher = {Routledge}, address = {London}, isbn = {978-0-367-68011-4}, doi = {10.4324/9781003133827-1}, pages = {1 -- 14}, year = {2022}, language = {en} } @phdthesis{Brandi2022, author = {Brandi, Francesco}, title = {Integrated biorefinery in continuous flow systems using sustainable heterogeneous catalysts}, doi = {10.25932/publishup-53766}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-537660}, school = {Universit{\"a}t Potsdam}, pages = {xii, 201}, year = {2022}, abstract = {The negative impact of crude oil on the environment has led to a necessary transition toward alternative, renewable, and sustainable resources. In this regard, lignocellulosic biomass (LCB) is a promising renewable and sustainable alternative to crude oil for the production of fine chemicals and fuels in a so-called biorefinery process. LCB is composed of polysaccharides (cellulose and hemicellulose), as well as aromatics (lignin). The development of a sustainable and economically advantageous biorefinery depends on the complete and efficient valorization of all components. Therefore, in the new generation of biorefinery, the so-called biorefinery of type III, the LCB feedstocks are selectively deconstructed and catalytically transformed into platform chemicals. For this purpose, the development of highly stable and efficient catalysts is crucial for progress toward viability in biorefinery. Furthermore, a modern and integrated biorefinery relies on process and reactor design, toward more efficient and cost-effective methodologies that minimize waste. In this context, the usage of continuous flow systems has the potential to provide safe, sustainable, and innovative transformations with simple process integration and scalability for biorefinery schemes. This thesis addresses three main challenges for future biorefinery: catalyst synthesis, waste feedstock valorization, and usage of continuous flow technology. Firstly, a cheap, scalable, and sustainable approach is presented for the synthesis of an efficient and stable 35 wt.-\% Ni catalyst on highly porous nitrogen-doped carbon support (35Ni/NDC) in pellet shape. Initially, the performance of this catalyst was evaluated for the aqueous phase hydrogenation of LCB-derived compounds such as glucose, xylose, and vanillin in continuous flow systems. The 35Ni/NDC catalyst exhibited high catalytic performances in three tested hydrogenation reactions, i.e., sorbitol, xylitol, and 2-methoxy-4-methylphenol with yields of 82 mol\%, 62 mol\%, and 100 mol\% respectively. In addition, the 35Ni/NDC catalyst exhibited remarkable stability over a long time on stream in continuous flow (40 h). Furthermore, the 35Ni/NDC catalyst was combined with commercially available Beta zeolite in a dual-column integrated process for isosorbide production from glucose (yield 83 mol\%). Finally, 35Ni/NDC was applied for the valorization of industrial waste products, namely sodium lignosulfonate (LS) and beech wood sawdust (BWS) in continuous flow systems. The LS depolymerization was conducted combining solvothermal fragmentation of water/alcohol mixtures (i.e.,methanol/water and ethanol/water) with catalytic hydrogenolysis/hydrogenation (SHF). The depolymerization was found to occur thermally in absence of catalyst with a tunable molecular weight according to temperature. Furthermore, the SHF generated an optimized cumulative yield of lignin-derived phenolic monomers of 42 mg gLS-1. Similarly, a solvothermal and reductive catalytic fragmentation (SF-RCF) of BWS was conducted using MeOH and MeTHF as a solvent. In this case, the optimized total lignin-derived phenolic monomers yield was found of 247 mg gKL-1.}, language = {en} } @incollection{Berner2022, author = {Berner, Elisabeth}, title = {Mundart und Umgangssprache}, series = {Die N{\"o}rdliche Uckermark um Prenzlau : eine landeskundliche Bestandsaufnahme}, booktitle = {Die N{\"o}rdliche Uckermark um Prenzlau : eine landeskundliche Bestandsaufnahme}, publisher = {B{\"o}hlau}, address = {K{\"o}ln}, isbn = {978-3-412-22540-7}, pages = {54 -- 56}, year = {2022}, language = {de} }