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Umdeutungen des Islams
(2022)
Fanatismus, Krieg und Terror – öffentliche Deutungen und Stereotype über Muslim*innen in der Bundesrepublik.
Ein großer Teil der deutschen Bevölkerung hat heutzutage eine negative Wahrnehmung von Muslim*innen. Ihnen wird pauschal ein Hang zu Gewalt, religiösem Fanatismus, Extremismus und Unterdrückung von Frauen unterstellt. Diese Zuschreibungen bestehen nicht erst seit den Terroranschlägen vom 11. September 2001, sondern haben sich bereits in den drei Jahrzehnten zuvor etabliert.
Alexander Konrad untersucht den Wandel der bundesdeutschen Wahrnehmungen von Muslim*innen von den Siebzigerjahren bis zur Jahrtausendwende. Dabei nimmt er öffentliche Aussagen und Handlungen von Akteur*innen aus Politik, Medien, Wissenschaft, Religionsgemeinschaften und Zivilgesellschaft kritisch in den Blick. Hintergründe, argumentative Überschneidungen und Agenden stehen im Zentrum seiner Analyse. Auch den damaligen Bemühungen um reflektierte Sichtweisen zu Muslim*innen spürt der Autor nach. Mit seiner Studie leistet Alexander Konrad einen fundamentalen Beitrag zur zeithistorischen Dekonstruktion von Denkweisen über Islam und Muslim*innen.
Novel nanocomposites of superparamagnetic cobalt nanoparticles (Co NPs) and poly(N-isopropylacrylamide) (PNIPAM) were fabricated through surface-initiated atom-transfer radical polymerization (SI-ATRP). We firstly synthesized a functional ATRP initiator, containing an amine (as anchoring group) and a 2-bromopropionate group (SI-ATRP initiator). Oleic acid- and trioctylphosphine oxide-coated Co NPs were then modified with the initiator via ligand exchange. The process is facile and rapid for efficient surface functionalization and afterwards the Co NPs can be dispersed into polar solvent DMF without aggregation. Transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and dynamic light scattering measurements confirmed the success of ligand exchange. The following polymerization of NIPAM was conducted on the surface of Co NPs. Temperature-dependent dynamic light scattering study showed the responsive behavior of PNIPAM-coated Co NPs. The combination of superparamagnetic and thermo-responsive properties in these hybrid nanoparticles is promising for future applications e.g. in biomedicine. (C) 2018 Elsevier Inc. All rights reserved.
Polystyrene-coated cobalt nanoparticles (NPs) were synthesized through a dual-stage thermolysis of cobalt carbonyl (Co-2(CO)(8)). The amine end-functionalized polystyrene surfactants with varying molecular weight were prepared via atom-transfer radical polymerization technique. By changing the concentration of these polymeric surfactants, Co NPs with different size, size distribution, and magnetic properties were obtained. Transmission electron microscopy characterization showed that the size of Co NPs stabilized with lower molecular weight polystyrene surfactants (M-n = 2300 g/mol) varied from 12-22 nm, while the size of Co NPs coated with polystyrene of middle (M-n = 4500 g/mol) and higher molecular weight (M-n = 10,500 g/mol) showed little change around 20 nm. Magnetic measurements revealed that the small cobalt particles were superparamagnetic, while larger particles were ferromagnetic and self-assembled into 1-D chain structures. Thermogravimetric analysis revealed that the grafting density of polystyrene with lower molecular weight is high. To the best of our knowledge, this is the first study to obtain both superparamagnetic and ferromagnetic Co NPs by changing the molecular weight and concentration of polystyrene through the dual-stage decomposition method.
This special birthday issue for Christine Walde, co-founder and co-editor of thersites, features contributions from colleagues and friends. The articles, essays, and book reviews, centering around the honoranda’s research interests as well as focusing on core topics of thersites, form a thematically varied mosaic (tessellae): innovative constructions of literary genres and poetics (especially bucolic, elegy, epic, and epigram), images of the city of Rome and its counterparts, sleep and dreams, history of classical scholarship, gender studies, and classical reception studies.