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261	Use of a novel peripheral nerve conduit to support sciatic nerve regeneration in an animal model Lan Chun Yang, Timothy 06 1900 (has links) Introduction : Les conduits nerveux synthétiques représentent une alternative chirurgicale aux autogreffes dans la réparation des traumatismes aux nerfs périphériques. Afin d’améliorer la régénération nerveuse périphérique, plusieurs biomatériels, tels que la multicouche polyélectrolyte de soie (MPE), et modèles ont été étudiés. Dans le cadre de ma maitrise, nos objectifs de recherche sont d’établir si la MPE de soie permet d’améliorer la régénération nerveuse périphérique in vivo et si notre nouveau modèle de conduit (« jelly roll ») peut mener à une meilleure régénération du nerf sciatique chez le rat que le modèle de conduit creux. Méthodes : Dans cette étude, une technique chirurgicale in vivo de lacération et de réparation du nerf sciatique chez le rat fut utilisé. Cinq conditions expérimentales de conduits (autogreffe, conduit creux avec et sans MPE de soie et « jelly roll » avec et sans MPE de soie) furent implantées (n= 2 rats par condition). Après 4 semaines, les conduits furent récupérés et marqués par immunohistochimie avec le neurofilament et la protéine basique de la myéline (MBP). La performance de chaque conduit fut évaluée par sa capacité à supporter l’excroissance axonale à travers le long du conduit et à travers la largeur de ce dernier à divers endroits. Résultats : Chaque condition expérimentale a supporté une régénération axonale avec différents degrés de succès. Globalement, l’autogreffe a supporté une plus longue croissance de fibres. De plus, la surface de fibres obtenue était plus large que les autres conditions. Les conduits avec la MPE de soie ont eu une performance similaire à leurs homologues sans soie. De plus, le modèle de conduit creux a mené à une meilleure régénération axonale que le modèle du « jelly roll ». Conclusion : L’autogreffe demeure le meilleur conduit pour supporter la régénération nerveuse périphérique. Les conduits avec la MPE de soie peuvent supporter une régénération nerveuse similaire aux conduits sans soie tandis que le modèle de « jelly roll » a généré des performances inférieures au modèle de conduit creux. / Background: Synthetic nerve conduits constitute alternative surgical options to autografts in the repair of peripheral nerve injuries. Silk polyelectrolyte multilayer (PEM) as a biomaterial and novel conduit designs have been proposed to improve peripheral nerve regeneration. In my master’s project, my objective is to assess whether silk PEM can improve peripheral nerve regeneration in vivo and to assess whether our novel conduit design (“jelly roll”) can better support rat sciatic nerve regeneration than a hollow conduit design. Methods: In this study, an in vivo rat model of sciatic nerve laceration and repair was used. Five experimental conduit conditions (autograft, hollow conduit with and without silk PEM, and jelly roll with and without silk PEM) were implanted (n=2 rats per condition). After 4 weeks, the conduits were harvested and immuno-stained for neurofilament and myelin basic protein (MBP). Conduit performance was assessed by its ability to support axonal outgrowth throughout the conduit’s length and at various locations along its width. Results: Each condition supported axonal regeneration at varying levels of success. Overall, the autograft group outperformed all other groups by supporting the longest and widest occupying regenerating fibers. Conduits with silk PEM performed similarly to conduits without silk PEM. In addition, the hollow conduit design demonstrated better regenerative outcomes than the jelly roll design. Conclusion: The autograft remains the superior conduit to support peripheral nerve regeneration. Conduits with silk PEM support nerve regeneration in the same capacity as non silk-coated conduits while the jelly roll design underperformed in comparison to the hollow conduit design. peripheral nerve regeneration nerve guidance conduit nerve autograft silk polyelectrolyte multilayer hollow nerve conduit jelly roll peripheral nerve surgery peripheral nerve injuries axonal outgrowth régénération nerveuse périphérique conduit de guidage nerveux autogreffe nerveuse multicouche polyélectrolyte de soie conduit nerveux creux chirurgie du nerf périphérique lésions nerveuses périphériques excroissance axonale
262	Handel, moral och monoteism : Religion och förmoderna handelsnätverk / Trade, Morality and Monotheism : Religion and premodern trade networks Lindbäck, Viktor January 2021 (has links) This essay examines, from a religious psychological perspective and with references to current religious psychological theories, possible connections between religion and long-distance trade in pre-modern societies, with an emphasis on the Silk Road. These possible connections concern both the role of religion in trade itself; for example, in the form of supernatural monitoring and costly signaling of credibility, as well as the role of long-distance trade in the spread and formation of religions. This essay also touches on the historical context in which the Silk Road had its greatest significance for both trade and religion; from the 2nd century BC until the end of the 15th century AD, to shed light on how historical factors such as technology, politics and societal organization interacts and intertwines with religion and trade. / Uppsatsen undersöker utifrån ett religionspsykologiskt perspektiv och aktuell religionspsykologisk teoribildning möjliga samband mellan religion och långväga handel i förmoderna samhällen, med särskild fokus på Sidenvägen. Dessa samband berör såväl religionens roll i själva handeln; till exempel i form av övernaturlig övervakning och kostsam signalering om trovärdighet, som den långväga handelns betydelse i spridning och formering av religioner. Uppsatsen berör också den historiska kontext där Sidenvägen får sin största betydelse för både handel och religion; från 200-talet f.Kr. och fram till 1400-talets slut, för att belysa hur historiska faktorer som teknologi, politik och sammahällsorganisation står i ett ständigt samspel med religion och handel. Silk Road trade networks psychology of religion Axial Age supernatural monitoring supernatural punishment divine reward divine punishmet supernatural reward costly signaling morality prosociality monotheism Big God Sidenvägen handelsnätverk religionspsykologi axialålder axialtid övernaturlig övervakning övernaturlig bestraffning kostsam signalering prosocialt beteende moral monoteism Religious Studies Religionsvetenskap
263	Essays and Studies in the Art of Kucha Konczak-Nagel, Ines, Zin, Monika 16 March 2023 (has links) The first volume of the Academy project 'Buddhist Murals of Kucha on the Northern Silk Road' contains three studies that show what information can be gained from the paintings. The first study by Ines Konczak-Nagel, “Painted Buddhist Cosmology: The Pictorial Programme of Central Pillar Caves in Kizil”, demonstrates how Buddhist cosmology, always seen in connection with the Buddhist path of salvation, is represented in the selection of topics and the arrangement of paintings on the cave walls. The second study by the same author, “Representations of Architecture and Architectural Elements on the Wall Paintings of Kucha”, is part of an ongoing extensive analysis of the material culture depicted in the paintings. The architecture represented provides insights into the local Tocharian architecture of Kucha, which has since disappeared. The study of Monika Zin “The Monk Kāśyapa in Kucha, the First Council, and the Furtherance of Buddhist Teaching” examines interesting extensions within the paintings illustrating the events connected with Buddha’s death, the many-scenic representations of the first council in Rājagṛha. There are good reason to believe that the monk Mahākāśyapa who was supposed to convoke the summit was worshiped in Kucha as a saint and guarantor of the preservation of Buddhist teachings.:Foreword by the Series Editors (Eli Franco and Monika Zin) I. Painted Buddhist Cosmology: The Pictorial Programme of Central Pillar Caves in Kizil (Ines Konczak-Nagel) Bibliography List of Illustrations with Acknowledgements II. Representations of Architecture and Architectural Elements in the Wall Paintings of Kucha (Ines Konczak-Nagel) 1 City Fortifications in 1st Indo-Iranian Style Paintings: Kuśinagara 2 City Fortifications in 2nd Indo-Iranian Style Paintings: Rājagṛha and Kuśinagara 2.1 Representations of the City of Rājagṛha 2.2 Representations of the City of Kuśinagara 2.3 Analysis of the Architectural Elements of City Fortifications 2.3.1 Walls 2.3.2 Loopholes 2.3.3 Crenellated Wall Walks 2.3.4 Towers 2.3.5 Gates and Access Paths 2.3.6 Decorative Elements 2.4 Conclusion 3 Representations of Fortifications of Other Cities in Kuchean Paintings 3.1 Depictions of City Fortifications with Towers along the Wall 3.1.1 Depictions of the City of nirvāṇa 3.1.2 Depictions of the City of Gods on Mount Meru 3.2 Simplified Depictions of City Fortifications 3.2.1 A Wall Painting in the 1st Indo-Iranian Style Showing the Story of Śroṇakoṭikarṇa 3.2.2 Wall Paintings in the 2nd Indo-Iranian Style Showing the Story of Maitrakanyaka 3.2.3 Wall Paintings in the 2nd Indo-Iranian Style Showing a City Fortification Occupied by Demons 3.3 Conclusion 4 Representations of Isolated City Gates and Palace Gates 4.1 Exceptions 4.2 Décor 4.3 Conclusion 5 Architectural Elements in and on Residential Buildings 5.1 Pillars 5.2 Ceilings 5.3 Windows 5.4 Balustrades 5.5 Conclusion 6 General Conclusion Bibliography List of Illustrations with Acknowledgements III. The Monk Kāśyapa in Kucha, the First Council, and the Furtherance of Buddhist Teaching. With an Appendix of Primary Sources Concerning the First Council as Given by Przyluski, Compiled by Fang Wang (Monika Zin) The Cycle within the Cycle: The Council of Rājagṛha in Kizil The Wall for Monks and the Cremation The Characteristics and Worship of the Monk Mahākāśyapa Mahākāśyapa in Kucha Appendix Bibliography List of Illustrations with Acknowledgements Index Figures ddc:755.9430951
264	Cellulose photonics : designing functionality and optical appearance of natural materials Guidetti, Giulia January 2018 (has links) Cellulose is the most abundant biopolymer on Earth as it is found in every plant cell wall; therefore, it represents one of the most promising natural resources for the fabrication of sustainable materials. In plants, cellulose is mainly used for structural integrity, however, some species organise cellulose in helicoidal nano-architectures generating strong iridescent colours. Recent research has shown that cellulose nanocrystals, CNCs, isolated from natural fibres, can spontaneously self-assemble into architectures that resemble the one producing colouration in plants. Therefore, CNCs are an ideal candidate for the development of new photonic materials that can find use to substitute conventional pigments, which are often harmful to humans and to the environment. However, various obstacles still prevent a widespread use of cellulose-based photonic structures. For instance, while the CNC films can display a wide range of colours, a precise control of the optical appearance is still difficult to achieve. The intrinsic low thermal stability and brittleness of cellulose-based films strongly limit their use as photonic pigments at the industrial scale. Moreover, it is challenging to integrate them into composites to obtain further functionality while preserving their optical response. In this thesis, I present a series of research contributions that make progress towards addressing these challenges. First, I use an external magnetic field to tune the CNC films scattering response. Then, I demonstrate how it is possible to tailor the optical appearance and the mechanical properties of the films as well as to enhance their functionality, by combining CNCs with other polymers. Finally, I study the thermal properties of CNC films to improve the retention of the helicoidal arrangement at high temperatures and to explore the potential use of this material in industrial fabrication processes, such as hot-melt extrusion.
265	Aggregation and Gelation in Random Networks / Aggregation und Gelation in zufälligen Netzwerken Ulrich, Stephan 03 March 2010 (has links) No description available. 530 Physik Mathematics and Computer Science Aggregation Elastizität Gelationsübergang Gele Gerichtete Polymere Granulate Nanokristalline Materialien Perkolation Polymere Replika-Theorie Röntgenstreuung Spinnenseide Thermodynamik Ungeordnete Festkörper Zufällige Netzwerke Aggregation Directed Polymers Disordered Solids Elasticity Gelation Transition Gels Granular Materials Nanocrystalline materials Percolation Polymers Random Networks Replica Theory Spider Silk Thermodynamics X-ray diffraction 33.25 33.62 RVM 210: Pulver Körner {Physik: Sonstige feste Stoffe}
266	Meta-Geopolitics of Central Asia : A Comparative Study of the Regional Influence of the European Union and the Shanghai Co-operation Organization Aghaie Joobani, Hossein January 2013 (has links) Central Asia has been the focal point of intense geopolitical power struggle throughout history. At the dawn of the 21st century, Central Asia has undergone major changes as the European Union and the China-led Shanghai Co-operation Organization have emerged as two normative powers, both seeking to influence the patterns of security governance in the region. This study aims to delve deep into ‘the black boxes’ of the EU’s and China’s foreign policies toward five CA republics. It starts from the premise that the bulk of research on Eurasian politics tend to concentrate mostly on realist and traditional geopolitical doctrine, which seem to have failed to properly explain the normative and ideational transformations that have taken place in the region as a result of the presence of these two emerging normative agents. By interweaving both realist and constructivist theories of International Relations (IR) into a new all-encompassing analytical framework, termed “meta-geopolitics”, the thesis seeks to trace and examine how geopolitical as well as normative components of the EU and Chinese regional strategies have affected the contemporary power dynamics in the post-Soviet space. I argue that, in contrast to the geopolitical struggle during the 19th and 20th centuries, a clash of normative powers is brewing in the region between China, under the aegis of the SCO, and the EU. The research also concludes that China has relatively been in a better position in comparison to the EU to render its policies as feasible, effective and legitimate to the Central Asian states. Central Asia Meta-geopolitics the European Union (EU) China normative power the Shanghai Co-operation Organization Realism Constructivism geopolitics The Great Game energy security socialization Confucianism balance of power Eurasia the Shanghai Spirit legitimacy Tajikistan Uzbekistan Kazakhstan Kyrgyzstan Turkmenistan Iran Silk Road geopolitics John J. Mearsheimer security dilemma Xinjiang province Sunni Muslims Afghanistan war 9/11 attacks Soviet Union human rights defensive realism East Turkestan The EU Strategy for a New Partnership China SCO CSTO NATO CIS.
267	La politique extérieure de l'Inde en Afrique / The Indian foreign policy in Africa Monnet, Rodolphe 12 June 2018 (has links) Depuis 2001 et la recomposition des équilibres de puissance, l'Inde s'affirme comme l'un des acteurs qui compte dans un espace international de plus en plus multipolaire. Les mouvements de fond actuels provoquent une redistribution de cette puissance imposant de nouvelles alliances et de nouveaux jeux de pouvoirs. L'Inde n'est pas étrangère à cette tendance et encore plus depuis l'arrivée au pouvoir, en 2014, de l'actuel Premier ministre, Narendra Modi. Ce dernier conduit une politique extérieure ambitieuse pour que son pays accède à un statut de puissance mondiale. C'est dans ce cadre que se pose notre problématique qui est de savoir dans quelle mesure la place de l'Afrique dans la politique étrangère indienne permet-elle justement à l'Inde de parvenir à se hisser à ce statut de puissance. Pour y répondre, cette thèse investigue trois directions. D'abord, la place de l'océan Indien dans la relation indo-africaine doit rendre compte du rôle de l'Afrique dans la volonté indienne de faire de cet océan un espace pacifique et sécurisé sur lequel l'Inde puisse être un acteur incontournable face à des acteurs politiques puissants et hétérogènes. Ensuite, cette thèse s'attache à déterminer le rôle que l'Afrique joue dans la volonté de l'Inde d'être une puissance ayant une capacité d'influence politique sur la scène internationale au travers des instances internationales, de ses relations bilatérales avec les États africains et de la diaspora indienne installée dans ces pays. Enfin, cette recherche de statut passe par le champ économique et la nécessaire évaluation de l'empreinte économique que l'Inde souhaite imprimer en Afrique pour mieux asseoir ses capacités d'influence. Cette étude doit permettre de donner un éclairage sur la politique extérieure indienne à l'heure où les États-Unis réévaluent leur implication dans l'océan Indien, où la Chine met en place la « One Belt, One Road » et où l'Inde et le Japon viennent de s'unir pour proposer un nouveau partenariat à l'Afrique. / Since 2001 and the reshuffling of the balance of power, India has become one of the influential actors in an increasingly multipolar international context. The current groundswells are reshuffling powers between Nations in shaping new alliances and new power games. India is, more than ever, involved in this trend since the current Prime Minister, Narendra Modi, came to power in 2014. He conducts an ambitious foreign policy as a means to make his country a global and respected power. The context of the issue detailed in this document is: to what extent does Africa's place in India's foreign policy enables India to reach this status of power? This thesis investigates the following three themes: Firstly, the Indian Ocean's place in the Indo-African relationship should reflect Africa's role in India's will to make the Indian Ocean region a peaceful and secured space in which India is a decisive player in front of powerful and heterogeneous political actors. Secondly, this thesis focuses on assessing Africa's role in India's initiatives to be an influential player on politics on the international agenda through international bodies, its bilateral relations with African states and the Indian diaspora settled down in these countries. Thirdly, India's search for that particular status goes through the economic area and the assessment of India's economic footprint in Africa to better establish its influence on that Continent. This study tries to shed the light on India's foreign policy while the United States are reassessing their involvement in the Indian Ocean, and while China is setting up its "One Belt, One Road" and India and Japan have just come together to propose a new partnership to Africa. Afrique Inde Chine Etats-Unis Japon Puissance Politique étrangère Nucléaire Sécurité d'approvisionnements Énergies renouvelables Océan Indien Autonomie stratégique Investissement étrangers Aide au développement Balance commerciale Économie bleue Puissance océanique Droit de veto Conseil de Sécurité Renseignement Diaspora Mouvement des non-alignés Coopération Sud-Sud Pivot stratégique Marine océanique Kala pani Diplomatie économique Route de la soie Énergies fossiles One Belt One Road India Africa Japan China United States Foreign policy Power Energy Nuclear Indian Ocean Security of supply Blue economy Strategic autonomy Foreign direct investment Development assistance Right of veto Security council Intelligence Diaspora South-South cooperation Non-aligned movement Strategic pivot Oceanic navy Economic diplomacy Silk road One belt One road Net security provider Kala pani 327.54

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