https://opendata.uni-halle.de//handle/497920112/1149660 Mon, 27 Apr 2026 18:43:53 GMT 2026-04-27T18:43:53Z http://opendata.uni-halle.de:80/retrieve/95d5b634-192b-47e8-8ee0-cc110e004100/mlu.jpg https://opendata.uni-halle.de//handle/497920112/1149660 https://opendata.uni-halle.de//handle/1981185920/125159 Title: Modelling and simulation of constitutive inelastic effects in composite cables by means of Prandtl-Ishlinskii operators Author(s): Manfredo, Davide Abstract: This thesis develops a mathematical framework for modelling the inelastic bending behaviour of composite electric cables within the theory of Cosserat rods. Motivated by industrial cable simulation, the cable is treated as a homogenised slender structure whose constitutive response exhibits rate-independent hysteresis. Prandtl-Ishlinskii hysteresis operators are used to describe the curvature-moment relation, allowing inelastic memory effects to be captured in a mathematically compact way. The operators are formulated in vector form, discretised, and interpreted in terms of classical elastoplastic concepts and homogenised spiral strand mechanics. The resulting constitutive model is integrated into a two-dimensional Cosserat rod formulation and validated through benchmark bending simulations. The approach provides a rigorous yet practical link between applied analysis, numerical simulation, and engineering applications, enabling predictive modelling of flexible composite structures. Wed, 01 Jan 2025 00:00:00 GMT https://opendata.uni-halle.de//handle/1981185920/125159 2025-01-01T00:00:00Z https://opendata.uni-halle.de//handle/1981185920/125153 Title: Genexpressionsuntersuchungen zur potentiellen Rolle des Epstein-Barr-Virus und Humaner endogener Retroviren bei der Pathogenese der Multiplen Sklerose Author(s): Schwarz, Tommy Abstract: Bei der multiplen Sklerose (MS) handelt es sich um eine inflammatorische und degenerative Erkrankung des zentralen Nervensystems mit bisher nicht abschließend geklärtem Pathomechanismus. Eine vielversprechende Hypothese geht von einer durch das Epstein-Barr-Virus (EBV) getriggerten Transaktivierung Humaner endogener Retroviren (HERV) aus, welche als Superantigene zu einer dysregulierten Immunantwort und damit zu den MS-typischen Veränderungen führen können. Für diese Arbeit wurde die Expression verschiedener EBV- und HERV-Gene in EBV-immortalisierten lymphoplasmoiden Zelllinien von MS-Patienten und Gesunden verglichen und der Einfluss von klinischen und Risikofaktoren untersucht. Bei MS-Erkranken und vor allem Frauen konnten eine stärkere Expression mehrerer EBV- und HERV-Gene sowie eine Korrelation zwischen diesen nachgewiesen werden. Diese Ergebnisse unterstützen die Retrovirus-Superantigen-Hypothese, erweitern die Literatur und bieten Ansatzpunkte für weitere Untersuchungen. Thu, 01 Jan 2026 00:00:00 GMT https://opendata.uni-halle.de//handle/1981185920/125153 2026-01-01T00:00:00Z https://opendata.uni-halle.de//handle/1981185920/125143 Title: Navigating frontier economies for survival in rural Sierra Leone Author(s): Kananizadeh, David Abstract: This ethnography examines how young men in rural Sierra Leone sustain livelihoods in volatile "frontier economies" shaped by extractive capitalism, fragmented governance, and refracting regimes of value. Based on multi-sited ethnography, it conceptualizes survival as navigation: a form of moral agency through which actors continuously recalibrate their engagements across subsistence, market, and social obligations. These engagements unfold under conditions of structural volatility, where opportunities emerge and collapse in rapid succession. Navigation enables survival but rarely produces stability; instead, it often reproduces the very fragmentation and uncertainty it seeks to overcome. By theorizing frontier economies as constitutive of capitalist expansion rather than margins, the dissertation contributes to debates in economic anthropology and development theory on agency, value, and the limits of intervention. Wed, 01 Jan 2025 00:00:00 GMT https://opendata.uni-halle.de//handle/1981185920/125143 2025-01-01T00:00:00Z https://opendata.uni-halle.de//handle/1981185920/124949 Title: Direct electrochemical synthesis of cubased metal-organic frameworks on copper thin films and microstructured substrates Author(s): Araujo-Cordero, Ana Maria Abstract: Metal-Organic Frameworks are highly crystalline porous materials composed of intercalated organic and inorganic building blocks that can be tailored to specific properties or applications. However, their synthesis is primarily carried out under solvothermal conditions, with limited control over the final shape and size of the resulting bulk MOF powder. This research presents a new electrochemical synthesis for the controlled deposition of Cu-based MOF on Cu thin films and Cu-based microstructured electrodes. The goal is to preserve the original size and shape of the microstructures after synthesizing an MOF core on their surface. The effects of PVP, MTBS, and TEA as catalysts, the ethanol concentration in the electrolyte, and the reaction time and temperature were studied. The results demonstrated that the addition of TEA hindered the spontaneous Cu-based MOF reaction and deprotonated the organic linker, thereby enabling, for the first time, the electrochemical synthesis of Cu(TCPP). Thu, 01 Jan 2026 00:00:00 GMT https://opendata.uni-halle.de//handle/1981185920/124949 2026-01-01T00:00:00Z