@misc{EsserHaenschOelgartSchmitz2018, author = {Esser, G{\"u}nter and H{\"a}nsch-Oelgart, Sylvana and Schmitz, Julian}, title = {TBS-TK Rezension}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {615}, issn = {1866-8364}, doi = {10.25932/publishup-43412}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-434129}, pages = {144 -- 146}, year = {2018}, language = {de} } @phdthesis{Espinosa2023, author = {Espinosa, Ruth}, title = {Dom{\"a}nenwirtschaftliche Staatsfinanzierung unter Landgraf Wilhelm IV.}, publisher = {epubli}, address = {Berlin}, isbn = {978-3-758421-31-0}, doi = {10.25932/publishup-60932}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-609329}, school = {Universit{\"a}t Potsdam}, pages = {612}, year = {2023}, abstract = {Die finanzgeschichtlichen Untersuchungen sind {\"u}berwiegend auf Geld konzentriert, Naturalien wurden vernachl{\"a}ssigt oder ausgeblendet. Die vorliegende Arbeit bezieht die Naturalien konsequent mit ein. Nur so ist eine Analyse der Dom{\"a}nenwirtschaft in ihrer Bedeutung f{\"u}r die Staatsfinanzen m{\"o}glich. Der Erkenntnisfortschritt liegt in der konsequenten Ber{\"u}cksichtigung der Naturalien durch Umrechnung in Geldwerte. Nicht zu leisten ist der Anteil der dom{\"a}nenwirtschaftlichen Ertr{\"a}ge am Gesamthaushalt des hessischen Territorialstaates, auch ist die Vermarktung der {\"U}bersch{\"u}sse der {\"A}mter quellenbedingt nicht zu ermitteln. Die {\"A}mterfinanzen zeigen einen Rahmen f{\"u}r dom{\"a}nenwirtschaftliche Staatsfinanzierung auf, dass bei Verzicht auf milit{\"a}rische Aktionen der fr{\"u}hmoderne Territorialstaat dom{\"a}nenwirtschaftlich zu finanzieren war. Die vorliegende Untersuchung kann aufzeigen, dass der dom{\"a}nenwirtschaftliche Rahmen f{\"u}r die Finanzierung eines Territorialstaates ausreichte, wenn er auf milit{\"a}rische Aktivit{\"a}ten und Abenteuer verzichtete. In dieser Studie werden erstmalig umfassende statistische Erhebungen der unteren staatlichen Ebene, das Landbuch und das {\"A}mterbuch ausgewertet, die bisher nur von Kersten Kr{\"u}ger ediert waren. Die vorliegende Arbeit ist in die Staatsfinanzierung auf der Stufe der Dom{\"a}nenwirtschaft einzuordnen. Landgraf Wilhelm IV. von Hessen-Kassel war einer der letzten, der es geschafft hatte, seinen Staat dom{\"a}nenwirtschaftlich mit den Einnahmen aus den Naturalien zu finanzieren. Als Dom{\"a}nenstaat wird ein Staat bezeichnet, der auf den ordentlichen Eink{\"u}nften aus Liegenschaften und Landbesitz beruht. Es wird in dieser Arbeit der dom{\"a}nenwirtschaftliche Rahmen f{\"u}r die Staatsfinanzen berechnet. Das bedeutet, dass die Zentralfinanzen nicht ber{\"u}cksichtigt sind. Es konnte gezeigt werden, dass, obwohl Landgraf Wilhelm IV. {\"u}ber ein kleineres Territorium als sein Vater, Landgraf Philipp der Großm{\"u}tige, verf{\"u}gte, die Gesamt{\"u}bersch{\"u}sse h{\"o}her waren. Das war seiner klugen Politik zu verdanken und seinen Bem{\"u}hungen, st{\"a}ndig die {\"A}mterfinanzen zu verbessern. Wilhelm IV. konsolidierte seinen Staat und konnte {\"u}ber dom{\"a}nenwirtschaftliche Einnahmen aus den {\"A}mtern seinen Staat finanzieren. Das gelang ihm, da er erstens seinen Staat ordentlich verwaltete und zweitens keine Kriege f{\"u}hrte. Landgraf Wilhelm IV. verabscheute den Krieg. Er sagte {\"u}ber den Krieg: „es ist kain abscheulicher ding auf erden als ein krieg".}, language = {de} } @phdthesis{EsmaeeliMoghaddamTabalvandani2022, author = {Esmaeeli Moghaddam Tabalvandani, Mariam}, title = {ROS Generation in Human Aldehyde Oxidase And the Effects of ROS and Reactive Sulfhydryl on the Activity of the Enzyme}, doi = {10.25932/publishup-53460}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-534600}, school = {Universit{\"a}t Potsdam}, pages = {153}, year = {2022}, abstract = {Aldehyde oxidases (AOXs) (E.C. 1.2.3.1) are molybdoflavo-enzymes belonging to the xanthine oxidase (XO) family. AOXs in mammals contain one molybdenum cofactor (Moco), one flavin adenine dinucleotide (FAD) and two [2Fe-2S] clusters, the presence of which is essential for the activity of the enzyme. Human aldehyde oxidase (hAOX1) is a cytosolic enzyme mainly expressed in the liver. hAOX1is involved in the metabolism of xenobiotics. It oxidizes aldehydes to their corresponding carboxylic acids and hydroxylates N-heterocyclic compounds. Since these functional groups are widely present in therapeutics, understanding the behaviour of hAOX1 has important implications in medicine. During the catalytic cycle of hAOX1, the substrate is oxidized at Moco and electrons are internally transferred to FAD via the FeS clusters. An electron acceptor juxtaposed to the FAD receives the electrons and re-oxidizes the enzyme for the next catalytic cycle. Molecular oxygen is the endogenous electron acceptor of hAOX1 and in doing so it is reduced and produces reactive oxygen species (ROS) including hydrogen peroxide (H2O2) and superoxide (O2.-). The production of ROS has patho-physiological importance, as ROS can have a wide range of effects on cell components including the enzyme itself. In this thesis, we have shown that hAOX1 loses its activity over multiple cycles of catalysis due to endogenous ROS production and have identified a cysteine rich motif that protects hAOX1 from the ROS damaging effects. We have also shown that a sulfido ligand, which is bound at Moco and is essential for the catalytic activity of the enzyme, is vulnerable during turnover. The ROS produced during the course of the reaction are also able to remove this sulfido ligand from Moco. ROS, in addition, oxidize particular cysteine residues. The combined effects of ROS on the sulfido ligand and on specific cysteine residues in the enzyme result in its inactivation. Furthermore, we report that small reducing agents containing reactive sulfhydryl groups, in a selective manner, inactivate some of the mammalian AOXs by modifying the sulfido ligand at Moco. The mechanism of ROS production by hAOX1 is another scope that has been investigated as part of the work in this thesis. We have shown that the ratio of type of ROS, i.e. hydrogen peroxide (H2O2) and superoxide (O2.-), produced by hAOX1 is determined by a particular position on a flexible loop that locates in close proximity of FAD. The size of the cavity at the ROS producing site, i.e. the N5 position of the FAD isoalloxazine ring, kinetically affects the amount of each type of ROS generated by hAOX1. Taken together, hAOX1 is an enzyme with emerging importance in pharmacological and medical studies, not only due to its involvement in drug metabolism, but also due to ROS production which has physiological and pathological implications.}, language = {en} } @phdthesis{Esen2023, author = {Esen, Cansu}, title = {Carbon nitride incorporation in polymer networks}, doi = {10.25932/publishup-57625}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-576253}, school = {Universit{\"a}t Potsdam}, pages = {xvi, 175}, year = {2023}, abstract = {The urge of light utilization in fabrication of materials is as encouraging as challenging. Steadily increasing energy consumption in accordance with rapid population growth, is requiring a corresponding solution within the same rate of occurrence speed. Therefore, creating, designing and manufacturing materials that can interact with light and in further be applicable as well as disposable in photo-based applications are very much under attention of researchers. In the era of sustainability for renewable energy systems, semiconductor-based photoactive materials have received great attention not only based on solar and/or hydrocarbon fuels generation from solar energy, but also successful stimulation of photocatalytic reactions such as water splitting, pollutant degradation and organic molecule synthesisThe turning point had been reached for water splitting with an electrochemical cell consisting of TiO2-Pt electrode illuminated by UV light as energy source rather than an external voltage, that successfully pursued water photolysis by Fujishima and Honda in 1972. Ever since, there has been a great deal of interest in research of semiconductors (e.g. metal oxide, metal-free organic, noble-metal complex) exhibiting effective band gap for photochemical reactions. In the case of environmental friendliness, toxicity of metal-based semiconductors brings some restrictions in possible applications. Regarding this, very robust and 'earth-abundant' organic semiconductor, graphitic carbon nitride has been synthesized and successfully applied in photoinduced applications as novel photocatalyst. Properties such as suitable band gap, low charge carrier recombination and feasibility for scaling up, pave the way of advance combination with other catalysts to gather higher photoactivity based on compatible heterojunction. This dissertation aims to demonstrate a series of combinations between organic semiconductor g-CN and polymer materials that are forged through photochemistry, either in synthesis or in application. Fabrication and design processes as well as applications performed in accordance to the scope of thesis will be elucidated in detail. In addition to UV light, more attention is placed on visible light as energy source with a vision of more sustainability and better scalability in creation of novel materials and solar energy based applications.}, language = {en} } @phdthesis{Eschenlohr2012, author = {Eschenlohr, Andrea}, title = {Element-resolved ultrafast magnetization dynamics in ferromagnetic alloys and multilayers}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-62846}, school = {Universit{\"a}t Potsdam}, year = {2012}, abstract = {The microscopic origin of ultrafast demagnetization, i.e. the quenching of the magnetization of a ferromagnetic metal on a sub-picosecond timescale after laser excitation, is still only incompletely understood, despite a large body of experimental and theoretical work performed since the discovery of the effect more than 15 years ago. Time- and element-resolved x-ray magnetic circular dichroism measurements can provide insight into the microscopic processes behind ultrafast demagnetization as well as its dependence on materials properties. Using the BESSY II Femtoslicing facility, a storage ring based source of 100 fs short soft x-ray pulses, ultrafast magnetization dynamics of ferromagnetic NiFe and GdTb alloys as well as a Au/Ni layered structure were investigated in laser pump - x-ray probe experiments. After laser excitation, the constituents of Ni50Fe50 and Ni80Fe20 exhibit distinctly different time constants of demagnetization, leading to decoupled dynamics, despite the strong exchange interaction that couples the Ni and Fe sublattices under equilibrium conditions. Furthermore, the time constants of demagnetization for Ni and Fe are different in Ni50Fe50 and Ni80Fe20, and also different from the values for the respective pure elements. These variations are explained by taking the magnetic moments of the Ni and Fe sublattices, which are changed from the pure element values due to alloying, as well as the strength of the intersublattice exchange interaction into account. GdTb exhibits demagnetization in two steps, typical for rare earths. The time constant of the second, slower magnetization decay was previously linked to the strength of spin-lattice coupling in pure Gd and Tb, with the stronger, direct spin-lattice coupling in Tb leading to a faster demagnetization. In GdTb, the demagnetization of Gd follows Tb on all timescales. This is due to the opening of an additional channel for the dissipation of spin angular momentum to the lattice, since Gd magnetic moments in the alloy are coupled via indirect exchange interaction to neighboring Tb magnetic moments, which are in turn strongly coupled to the lattice. Time-resolved measurements of the ultrafast demagnetization of a Ni layer buried under a Au cap layer, thick enough to absorb nearly all of the incident pump laser light, showed a somewhat slower but still sub-picosecond demagnetization of the buried Ni layer in Au/Ni compared to a Ni reference sample. Supported by simulations, I conclude that demagnetization can thus be induced by transport of hot electrons excited in the Au layer into the Ni layer, without the need for direct interaction between photons and spins.}, language = {en} } @article{Esakov2013, author = {Esakov, Gennady}, title = {Strafbare {\"U}bertretungen in der Systematik des russischen Rechts}, series = {Schriften zum deutschen und russischen Strafrecht}, journal = {Schriften zum deutschen und russischen Strafrecht}, number = {3}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2191-0898}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-67545}, pages = {61 -- 65}, year = {2013}, language = {de} } @article{Eršova2016, author = {Eršova, Inna}, title = {Тезисы}, series = {Dritte Woche des Russischen Rechts, Potsdam, 13.-17.10.2014, mit der Moskauer Staatlichen Juristischen O. E. Kutafin Universit{\"a}t (Akademie)}, volume = {3}, journal = {Dritte Woche des Russischen Rechts, Potsdam, 13.-17.10.2014, mit der Moskauer Staatlichen Juristischen O. E. Kutafin Universit{\"a}t (Akademie)}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-340-4}, issn = {2199-9686}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-92063}, pages = {169 -- 173}, year = {2016}, language = {ru} } @article{Eršova2016, author = {Eršova, Inna}, title = {Саморегулирование предпринимательской и профессиональной деятельности}, series = {Dritte Woche des Russischen Rechts, Potsdam, 13.-17.10.2014, mit der Moskauer Staatlichen Juristischen O. E. Kutafin Universit{\"a}t (Akademie)}, volume = {3}, journal = {Dritte Woche des Russischen Rechts, Potsdam, 13.-17.10.2014, mit der Moskauer Staatlichen Juristischen O. E. Kutafin Universit{\"a}t (Akademie)}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-340-4}, issn = {2199-9686}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-92057}, pages = {153 -- 166}, year = {2016}, abstract = {I. Правовой институт саморегулирования предпринимательской и профессиональной деятельности II. Понятие и сущность саморегулирования III. Понятие и правовой статус саморегулируемых организаций}, language = {ru} } @article{Eršova2016, author = {Eršova, Inna}, title = {Selbstregulierung von Unternehmen (SRO)}, series = {Dritte Woche des Russischen Rechts, Potsdam, 13.-17.10.2014, mit der Moskauer Staatlichen Juristischen O. E. Kutafin Universit{\"a}t (Akademie)}, volume = {3}, journal = {Dritte Woche des Russischen Rechts, Potsdam, 13.-17.10.2014, mit der Moskauer Staatlichen Juristischen O. E. Kutafin Universit{\"a}t (Akademie)}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-340-4}, issn = {2199-9686}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-92071}, pages = {175 -- 179}, year = {2016}, abstract = {Thesen}, language = {de} } @article{Erzner2013, author = {Erzner, Frank}, title = {Schulb{\"u}cher f{\"u}r den Geographieunterricht}, series = {Potsdamer geographische Praxis}, journal = {Potsdamer geographische Praxis}, number = {6}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2194-1599}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-66231}, pages = {55 -- 62}, year = {2013}, abstract = {1. Die Produzenten eines Schulbuchs 2. Erwartungen an Schulb{\"u}cher 3. Schulbuchzulassung 4. Einsch{\"a}tzung der Lehrerinnen und Lehrer 5. Verlegerische Herausforderungen durch den Wandel des Schulbuchs 6. Herausforderungen des Informationszeitalters 7. Das Schulbuch f{\"u}r den Geographieunterricht - Ein "heimlicher" Lehrplan?}, language = {de} } @misc{ErrardUlrichsKuehneetal.2016, author = {Errard, Audrey and Ulrichs, Christian and K{\"u}hne, Stefan and Mewis, Inga and Mishig, Narantuya and Maul, Ronald and Drungowski, Mario and Parolin, Pia and Schreiner, Monika and Baldermann, Susanne}, title = {Metabolite profiling reveals a specific response in tomato to predaceous Chrysoperla carnea larvae and herbivore(s)-predator interactions with the generalist pests Tetranychus urticae and Myzus persicae}, series = {Frontiers in plant science}, journal = {Frontiers in plant science}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-407913}, pages = {14}, year = {2016}, abstract = {The spider mite Tetranychus urticae Koch and the aphid Myzus persicae (Sulzer) both infest a number of economically significant crops, including tomato (Solanurn lycopersicum). Although used for decades to control pests, the impact of green lacewing larvae Chrysoperla carnea (Stephens) on plant biochemistry was not investigated. Here, we used profiling methods and targeted analyses to explore the impact of the predator and herbivore(s)-predator interactions on tomato biochemistry. Each pest and pest -predator combination induced a characteristic metabolite signature in the leaf and the fruit thus, the plant exhibited a systemic response. The treatments had a stronger impact on non-volatile metabolites including abscisic acid and amino acids in the leaves in comparison with the fruits. In contrast, the various biotic factors had a greater impact on the carotenoids in the fruits. We identified volatiles such as myrcene and alpha-terpinene which were induced by pest -predator interactions but not by single species, and we demonstrated the involvement of the phytohormone abscisic acid in tritrophic interactions for the first time. More importantly, C. carnea larvae alone impacted the plant metabolome, but the predator did not appear to elicit particular defense pathways on its own. Since the presence of both C. carnea larvae and pest individuals elicited volatiles which were shown to contribute to plant defense, C. carnea larvae could therefore contribute to the reduction of pest infestation, not only by its preying activity, but also by priming responses to generalist herbivores such as T urticae and M. persicae. On the other hand, the use of C. carnea larvae alone did not impact carotenoids thus, was not prejudicial to the fruit quality. The present piece of research highlights the specific impact of predator and tritrophic interactions with green lacewing larvae, spider mites, and aphids on different components of the tomato primary and secondary metabolism for the first time, and provides cues for further in-depth studies aiming to integrate entomological approaches and plant biochemistry.}, language = {en} } @article{ErnstWienecke2021, author = {Ernst, Sebastian and Wienecke, Maik}, title = {Das Spiel mit Geschichte(n) - Computerspiele als geschichtskulturelle Erz{\"a}hlungen}, series = {DIGAREC Series}, journal = {DIGAREC Series}, number = {9}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-511-8}, issn = {1867-6219}, doi = {10.25932/publishup-52672}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-526726}, pages = {124 -- 156}, year = {2021}, abstract = {Computerspiele sind wichtige und zugleich besondere geschichtskulturelle Quellen. Sie pr{\"a}gen in zunehmendem Maße die Vorstellungen, die wir uns von historischen Gesellschaften und Ereignissen machen. Der Geschichtsunterricht, der sich auch die Bef{\"a}higung zu einem kritischen Umgang mit geschichtskulturellen Angeboten zum Ziel setzt, muss sich entsprechend mit diesen auseinandersetzen. Eine M{\"o}glichkeit, wie dies im Rahmen formaler Unterrichtsprozesse und unter Ber{\"u}cksichtigung der Besonderheiten dieses Mediums geschehen kann, ist Thema des folgenden Beitrags.}, language = {de} } @misc{ErnstProeveKrieger2024, author = {Ernst, Sebastian and Pr{\"o}ve, Ralf and Krieger, Jannis M.}, title = {Konstruktivistisches Prozessmodell Historischer Erkenntnisbildung}, doi = {10.25932/publishup-62634}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-626341}, year = {2024}, abstract = {Vergangenheit ist vergangen, Geschichte wird gemacht. An diesem Konstruktionsprozess sind nicht nur die historischen Akteur:innen und deren Quellen, sondern in besonderem Maße auch die Historiker:innen, die sich mit diesen auseinandersetzen, beteiligt. Sie sind es, die die Quellen erst zum Sprudeln bringen. Was dabei zutage tritt, ist somit in hohem Maße von den Forschenden selbst, von ihren Vorannahmen und Methoden aber auch von ihren sozialen, kulturellen und biografischen Pr{\"a}gungen abh{\"a}ngig. Das hier vorgestellte Prozessmodell versucht, diese als Einflussfaktoren zu fassen und sichtbar zu machen, um auf dieser Basis eine erweiterte wissenschaftliche (Selbst-)Reflexion zu erm{\"o}glichen.}, language = {de} } @article{Ernst2020, author = {Ernst, Sebastian}, title = {S(t)imulated Moralities?}, series = {DIGAREC Series}, journal = {DIGAREC Series}, number = {08}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-467-8}, issn = {1867-6219}, doi = {10.25932/publishup-43069}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-430690}, pages = {174 -- 204}, year = {2020}, abstract = {Videospiele konfrontieren die Spielenden mit moralischen Settings, die es handelnd zu bew{\"a}ltigen gilt und in die diese emotional involviert werden. Auf diese Weise erm{\"o}glichen sie nicht nur Erfahrungen mit den Konsequenzen eigenen Handelns in gegebenen, teils komplexen Kontexten, sondern auch mit (der eigenen) Emotionalit{\"a}t als Teil von Entscheidungsprozessen. Diese Erfahrungen k{\"o}nnen gezielt f{\"u}r eine ethische Reflexion in einem erfahrungsbasierten und handlungsorientierten Unterricht genutzt werden, um sich so der Komplexit{\"a}t realweltlicher Dilemmata anzun{\"a}hern.}, language = {de} } @article{Ernst2021, author = {Ernst, Sebastian}, title = {„I was never so foolish that I trusted it"}, series = {DIGAREC Series}, journal = {DIGAREC Series}, number = {9}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-511-8}, issn = {1867-6219}, doi = {10.25932/publishup-52673}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-526730}, pages = {158 -- 177}, year = {2021}, abstract = {Nicht nur der Lauf der Geschichte ver{\"a}ndert sich, sondern auch Geschichtswissenschaft und -unterricht. An die Stelle des Auswendiglernens vorgegebener historischer Erz{\"a}hlungen trat im Laufe der Zeit zunehmend die Bef{\"a}higung zu deren Dekonstruktion. Daf{\"u}r m{\"u}ssen allerdings die Entstehungsbedingungen (geschichts-)wissenschaftlicher Erkenntnisse nachvollzogen werden k{\"o}nnen. Eine M{\"o}glichkeit, dies auf spielerische Art und Weise, aber auch auf Augenh{\"o}he mit Lehrkr{\"a}ften und Historiker*innen zu tun, bieten Open-World- Spiele wie HORIZON ZERO DAWN (2017).}, language = {de} } @article{Ernst2020, author = {Ernst, Sebastian}, title = {This War of Mine}, series = {„Wir alle treffen Entscheidungen im Leben, aber letztendlich treffen unsere Entscheidungen uns." : didaktische Potenziale digitaler Spielwelten}, journal = {„Wir alle treffen Entscheidungen im Leben, aber letztendlich treffen unsere Entscheidungen uns." : didaktische Potenziale digitaler Spielwelten}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-489-0}, doi = {10.25932/publishup-48587}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-485878}, pages = {361 -- 377}, year = {2020}, language = {de} } @article{ErnstWeiss2006, author = {Ernst, Ren{\´e}e and Weiß, Norman}, title = {Die Millenniumsziele - eine kritische Zwischenbilanz 2005}, series = {Chancen f{\"u}r eine Reform der Vereinten Nationen? Bilanz zum 60. Geburtstag der Weltorganisation , 7. Potsdamer UNO-Konferenz vom 24. bis 25. Juni 2005}, volume = {2006}, journal = {Chancen f{\"u}r eine Reform der Vereinten Nationen? Bilanz zum 60. Geburtstag der Weltorganisation , 7. Potsdamer UNO-Konferenz vom 24. bis 25. Juni 2005}, number = {6}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-101743}, pages = {7 -- 17}, year = {2006}, abstract = {Die Millenniumsziele - eine kritische Zwischenbilanz 2005 // Ren{\´e}e Ernst Die Millenniumsziele - eine kritische Zwischenbilanz 2005 - Diskussionszusammenfassung // Norman Weiß}, language = {de} } @article{Ernst2005, author = {Ernst, Christian}, title = {Marguerite Duras et Alain Resnais}, series = {Marguerite Duras : l'existence passionn{\´e}e : Actes du Colloque de Potsdam 18 - 24 avril 2005}, journal = {Marguerite Duras : l'existence passionn{\´e}e : Actes du Colloque de Potsdam 18 - 24 avril 2005}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {3-937786-82-1}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-21718}, pages = {128 -- 129}, year = {2005}, language = {fr} } @misc{ErmeydanCabaneHassetal.2014, author = {Ermeydan, Mahmut Ali and Cabane, Etienne and Hass, Philipp and Koetz, Joachim and Burgert, Ingo}, title = {Fully biodegradable modification of wood for improvement of dimensional stability and water absorption properties by poly(ε-caprolactone) grafting into the cell walls}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-97265}, pages = {3313 -- 3321}, year = {2014}, abstract = {Materials derived from renewable resources are highly desirable in view of more sustainable manufacturing. Among the available natural materials, wood is one of the key candidates, because of its excellent mechanical properties. However, wood and wood-based materials in engineering applications suffer from various restraints, such as dimensional instability upon humidity changes. Several wood modification treatments increase water repellence, but the insertion of hydrophobic polymers can result in a composite material which cannot be considered as renewable anymore. In this study, we report on the grafting of the fully biodegradable poly(ε-caprolactone) (PCL) inside the wood cell walls by Sn(Oct)2 catalysed ring-opening polymerization (ROP). The presence of polyester chains within the wood cell wall structure is monitored by confocal Raman imaging and spectroscopy as well as scanning electron microscopy. Physical tests reveal that the modified wood is more hydrophobic due to the bulking of the cell wall structure with the polyester chains, which results in a novel fully biodegradable wood material with improved dimensional stability.}, language = {en} } @misc{ErmeydanCabaneGierlingeretal.2014, author = {Ermeydan, Mahmut Ali and Cabane, Etienne and Gierlinger, Notburga and Koetz, Joachim and Burgert, Ingo}, title = {Improvement of wood material properties via in situ polymerization of styrene into tosylated cell walls}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-98736}, pages = {8}, year = {2014}, abstract = {As an engineering material derived from renewable resources, wood possesses excellent mechanical properties in view of its light weight but also has some disadvantages such as low dimensional stability upon moisture changes and low durability against biological attack. Polymerization of hydrophobic monomers in the cell wall is one of the potential approaches to improve the dimensional stability of wood. A major challenge is to insert hydrophobic monomers into the hydrophilic environment of the cell walls, without increasing the bulk density of the material due to lumen filling. Here, we report on an innovative and simple method to insert styrene monomers into tosylated cell walls (i.e. -OH groups from natural wood polymers are reacted with tosyl chloride) and carry out free radical polymerization under relatively mild conditions, generating low wood weight gains. In-depth SEM and confocal Raman microscopy analysis are applied to reveal the distribution of the polystyrene in the cell walls and the lumen. The embedding of polystyrene in wood results in reduced water uptake by the wood cell walls, a significant increase in dimensional stability, as well as slightly improved mechanical properties measured by nanoindentation.}, language = {en} }