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During the period 750-600 Ma ago, prior to the final break-up of the supercontinent Rodinia, the crust of both the North American Craton and Baltica was intruded by significant amounts of rift-related magmas originating from the mantle. In the Proterozoic crust of Southern Norway, the 580 Ma old Fen carbonatite-ultramafic complex is a representative of this type of rocks. In this paper, we report the occurrence of an ultramafic lamprophyre dyke which possibly is linked to the Fen complex, although Ar-40/Ar-39 data from phenocrystic phlogopite from the dyke gave an age of 686 +/- 9 Ma. The lamprophyre dyke was recently discovered in one of the Kongsberg silver mines at Vinoren, Norway. Whole rock geochemistry, geochronological and mineralogical data from the ultramafic lamprophyre dyke are presented aiming to elucidate its origin and possible geodynamic setting. From the whole-rock composition of the Vinoren dyke, the rock could be recognized as transitional between carbonatite and kimberlite-II (orangeite). From its diagnostic mineralogy, the rock is classified as aillikite. The compositions and xenocrystic nature of several of the major and accessory minerals from the Vinoren aillikite are characteristic for diamondiferous rocks (kimberlites/lamproites/UML): Phlogopite with kinoshitalite-rich rims, chromite-spinel-ulvospinel series, Mg- and Mn-rich ilmenites, rutile and lucasite-(Ce). We suggest that the aillikite melt formed during partial melting of a MARID (mica-amphibole-rutile-ilmenite-diopside)-like source under CO2 fluxing. The pre-rifting geodynamic setting of the Vinoren aillikite before the Rodinia supercontinent breakup suggests a relatively thick SCLM (Subcontinental Lithospheric Mantle) during this stage and might indicate a diamond-bearing source for the parental melt. This is in contrast to the about 100 Ma younger Fen complex, which were derived from a thin SCLM.
The remarkable progress of metal halide perovskites in photovoltaics has led to the power conversion efficiency approaching 26%. However, practical applications of perovskite-based solar cells are challenged by the stability issues, of which the most critical one is photo-induced degradation. Bare CH3NH3PbI3 perovskite films are known to decompose rapidly, with methylammonium and iodine as volatile species and residual solid PbI2 and metallic Pb, under vacuum under white light illumination, on the timescale of minutes. We find, in agreement with previous work, that the degradation is non-uniform and proceeds predominantly from the surface, and that illumination under N-2 and ambient air (relative humidity 20%) does not induce substantial degradation even after several hours. Yet, in all cases the release of iodine from the perovskite surface is directly identified by X-ray photoelectron spectroscopy. This goes in hand with a loss of organic cations and the formation of metallic Pb. When CH3NH3PbI3 films are covered with a few nm thick organic capping layer, either charge selective or non-selective, the rapid photodecomposition process under ultrahigh vacuum is reduced by more than one order of magnitude, and becomes similar in timescale to that under N-2 or air. We conclude that the light-induced decomposition reaction of CH3NH3PbI3, leading to volatile methylammonium and iodine, is largely reversible as long as these products are restrained from leaving the surface. This is readily achieved by ambient atmospheric pressure, as well as a thin organic capping layer even under ultrahigh vacuum. In addition to explaining the impact of gas pressure on the stability of this perovskite, our results indicate that covalently "locking" the position of perovskite components at the surface or an interface should enhance the overall photostability.
We recently demonstrated that the sympathetic nervous system can be voluntarily activated following a training program consisting of cold exposure, breathing exercises, and meditation. This resulted in profound attenuation of the systemic inflammatory response elicited by lipopolysaccharide (LPS) administration. Herein, we assessed whether this training program affects the plasma metabolome and if these changes are linked to the immunomodulatory effects observed. A total of 224 metabolites were identified in plasma obtained from 24 healthy male volunteers at six timepoints, of which 98 were significantly altered following LPS administration. Effects of the training program were most prominent shortly after initiation of the acquired breathing exercises but prior to LPS administration, and point towards increased activation of the Cori cycle. Elevated concentrations of lactate and pyruvate in trained individuals correlated with enhanced levels of anti-inflammatory interleukin (IL)-10. In vitro validation experiments revealed that co-incubation with lactate and pyruvate enhances IL-10 production and attenuates the release of pro-inflammatory IL-1 beta and IL-6 by LPS-stimulated leukocytes. Our results demonstrate that practicing the breathing exercises acquired during the training program results in increased activity of the Cori cycle. Furthermore, this work uncovers an important role of lactate and pyruvate in the anti-inflammatory phenotype observed in trained subjects.
We recently demonstrated that the sympathetic nervous system can be voluntarily activated following a training program consisting of cold exposure, breathing exercises, and meditation. This resulted in profound attenuation of the systemic inflammatory response elicited by lipopolysaccharide (LPS) administration. Herein, we assessed whether this training program affects the plasma metabolome and if these changes are linked to the immunomodulatory effects observed. A total of 224 metabolites were identified in plasma obtained from 24 healthy male volunteers at six timepoints, of which 98 were significantly altered following LPS administration. Effects of the training program were most prominent shortly after initiation of the acquired breathing exercises but prior to LPS administration, and point towards increased activation of the Cori cycle. Elevated concentrations of lactate and pyruvate in trained individuals correlated with enhanced levels of anti-inflammatory interleukin (IL)-10. In vitro validation experiments revealed that co-incubation with lactate and pyruvate enhances IL-10 production and attenuates the release of pro-inflammatory IL-1 beta and IL-6 by LPS-stimulated leukocytes. Our results demonstrate that practicing the breathing exercises acquired during the training program results in increased activity of the Cori cycle. Furthermore, this work uncovers an important role of lactate and pyruvate in the anti-inflammatory phenotype observed in trained subjects.
Based on an analysis of continuous monitoring of farm animal behavior in the region of the 2016 M6.6 Norcia earthquake in Italy, Wikelski et al., 2020; (Seismol Res Lett, 89, 2020, 1238) conclude that animal activity can be anticipated with subsequent seismic activity and that this finding might help to design a "short-term earthquake forecasting method." We show that this result is based on an incomplete analysis and misleading interpretations. Applying state-of-the-art methods of statistics, we demonstrate that the proposed anticipatory patterns cannot be distinguished from random patterns, and consequently, the observed anomalies in animal activity do not have any forecasting power.
Reading requires the assembly of cognitive processes across a wide spectrum from low-level visual perception to high-level discourse comprehension. One approach of unravelling the dynamics associated with these processes is to determine how eye movements are influenced by the characteristics of the text, in particular which features of the words within the perceptual span maximise the information intake due to foveal, spillover, parafoveal, and predictive processing. One way to test the generalisability of current proposals of such distributed processing is to examine them across different languages. For Turkish, an agglutinative language with a shallow orthography-phonology mapping, we replicate the well-known canonical main effects of frequency and predictability of the fixated word as well as effects of incoming saccade amplitude and fixation location within the word on single-fixation durations with data from 35 adults reading 120 nine-word sentences. Evidence for previously reported effects of the characteristics of neighbouring words and interactions was mixed. There was no evidence for the expected Turkish-specific morphological effect of the number of inflectional suffixes on single-fixation durations. To control for word-selection bias associated with single-fixation durations, we also tested effects on word skipping, single-fixation, and multiple-fixation cases with a base-line category logit model, assuming an increase of difficulty for an increase in the number of fixations. With this model, significant effects of word characteristics and number of inflectional suffixes of foveal word on probabilities of the number of fixations were observed, while the effects of the characteristics of neighbouring words and interactions were mixed.
In this paper, we move from the large strand of research that looks at evidence of climate migration to the questions: who are the climate migrants? and where do they go? These questions are crucial to design policies that mitigate welfare losses of migration choices due to climate change. We study the direct and heterogeneous associations between weather extremes and migration in rural India. We combine ERAS reanalysis data with the India Human Development Survey household panel and conduct regression analyses by applying linear probability and multinomial logit models. This enables us to establish a causal relationship between temperature and precipitation anomalies and overall migration as well as migration by destination. We show that adverse weather shocks decrease rural-rural and international migration and push people into cities in different, presumably more prosperous states. A series of positive weather shocks, however, facilitates international migration and migration to cities within the same state. Further, our results indicate that in contrast to other migrants, climate migrants are likely to be from the lower end of the skill distribution and from households strongly dependent on agricultural production. We estimate that approximately 8% of all rural-urban moves between 2005 and 2012 can be attributed to weather. This figure might increase as a consequence of climate change. Thus, a key policy recommendation is to take steps to facilitate integration of less educated migrants into the urban labor market.
Research on novel and advanced biomaterials is an indispensable step towards their applications in desirable fields such as tissue engineering, regenerative medicine, cell culture, or biotechnology. The work presented here focuses on such a promising material: polyelectrolyte multilayer (PEM) composed of hyaluronic acid (HA) and poly(L-lysine) (PLL). This gel-like polymer surface coating is able to accumulate (bio-)molecules such as proteins or drugs and release them in a controlled manner. It serves as a mimic of the extracellular matrix (ECM) in composition and intrinsic properties. These qualities make the HA/PLL multilayers a promising candidate for multiple bio-applications such as those mentioned above. The work presented aims at the development of a straightforward approach for assessment of multi-fractional diffusion in multilayers (first part) and at control of local molecular transport into or from the multilayers by laser light trigger (second part).
The mechanism of the loading and release is governed by the interaction of bioactives with the multilayer constituents and by the diffusion phenomenon overall. The diffusion of a molecule in HA/PLL multilayers shows multiple fractions of different diffusion rate. Approaches, that are able to assess the mobility of molecules in such a complex system, are limited. This shortcoming motivated the design of a novel evaluation tool presented here.
The tool employs a simulation-based approach for evaluation of the data acquired by fluorescence recovery after photobleaching (FRAP) method. In this approach, possible fluorescence recovery scenarios are primarily simulated and afterwards compared with the data acquired while optimizing parameters of a model until a sufficient match is achieved. Fluorescent latex particles of different sizes and fluorescein in an aqueous medium are utilized as test samples validating the analysis results. The diffusion of protein cytochrome c in HA/PLL multilayers is evaluated as well.
This tool significantly broadens the possibilities of analysis of spatiotemporal FRAP data, which originate from multi-fractional diffusion, while striving to be widely applicable. This tool has the potential to elucidate the mechanisms of molecular transport and empower rational engineering of the drug release systems.
The second part of the work focuses on the fabrication of such a spatiotemporarily-controlled drug release system employing the HA/PLL multilayer. This release system comprises different layers of various functionalities that together form a sandwich structure. The bottom layer, which serves as a reservoir, is formed by HA/PLL PEM deposited on a planar glass substrate. On top of the PEM, a layer of so-called hybrids is deposited. The hybrids consist of thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) -based hydrogel microparticles with surface-attached gold nanorods. The layer of hybrids is intended to serve as a gate that controls the local molecular transport through the PEM–solution-interface. The possibility of stimulating the molecular transport by near-infrared (NIR) laser irradiation is being explored.
From several tested approaches for the deposition of hybrids onto the PEM surface, the drying-based approach was identified as optimal. Experiments, that examine the functionality of the fabricated sandwich at elevated temperature, document the reversible volume phase transition of the PEM-attached hybrids while sustaining the sandwich stability. Further, the gold nanorods were shown to effectively absorb light radiation in the tissue- and cell-friendly NIR spectral region while transducing the energy of light into heat. The rapid and reversible shrinkage of the PEM-attached hybrids was thereby achieved. Finally, dextran was employed as a model transport molecule. It loads into the PEM reservoir in a few seconds with the partition constant of 2.4, while it spontaneously releases in a slower, sustained manner. The local laser irradiation of the sandwich, which contains the fluorescein isothiocyanate tagged dextran, leads to a gradual reduction of fluorescence intensity in the irradiated region.
The release system fabricated employs renowned photoresponsivity of the hybrids in an innovative setting. The results of the research are a step towards a spatially-controlled on-demand drug release system that paves the way to spatiotemporally controlled drug release.
The approaches developed in this work have the potential to elucidate the molecular dynamics in ECM and to foster engineering of multilayers with properties tuned to mimic the ECM. The work aims at spatiotemporal control over the diffusion of bioactives and their presentation to the cells.
During the phases of mobile warfare, the ethnically and religiously very heterogeneous population in the border regions of the multi-ethnic empires suffered in particular. Even if the real military situation in the course of the war hardly gave cause for concern, the image of disloyal ethnic and national minorities was widespread. This was particularly the case when ethnic groups lived on both sides of the border and social and political tensions had already established themselves along ethnic or religious lines of conflict before the war. Displacements, deportations and mass violence were the result. The genocide of the Armenian population is the most extreme example of this development. This anthology examines the border regions of the Ottoman, Russian and Habsburg empires during the First World War with regard to radical population policy and genocidal violence from a comparative perspective in order to draw a more precise picture of escalating and deescalating factors.
Minor cosmopolitan
(2020)
Cosmopolitanism is a theory about how to live together. The earliest formulation of cosmopolitanism in the West could be dated to as early as the fourth century BCE in ancient Greece by Diogenes, who famously said that he was a “citizen of the world – kosmopolitês,” an idea later picked up by Immanuel Kant, the German philosopher who proposed a philosophy of a world of “perpetual peace.” When cosmopolitanism first emerged as a political idea for modernity in the European Enlightenment, the project embraced the liberal promises of a globalizing economy, yet remained oblivious to, and even complicit with, capitalism, slavery and colonialism. It centered on the male, bourgeois, and white liberal subject, irrespective of the ongoing disenfranchisement, dehumanization, and extermination of its Others.
At the dawn of the 21st century, and in the wake of rapid globalization however, academics, politicians and other pundits enthusiastically declared cosmopolitanism to be no longer just a philosophical ideal, but a real, existing fact. Across the globe, they argued, people were increasingly thinking and feeling beyond the nation, considering themselves citizens of the world. Meanwhile, the global ecological crisis worsens, fascism with different outfits returns in many places of the world, the repression of women, sexual, racial, class and other minorities on a global scale persists; the so called “refugee crisis” inundates the mediascape and political spectacle. Not much of those cosmopolitan promises have left it seems. Perhaps precisely because of this, however, it seems to be an absolute necessity for scholars, activists, and artists today to face the complexities and promises cosmopolitanism has raised although not adequately answered. What has happened to the cosmopolitan promise, and who betrayed it?
“Minor cosmopolitanisms” wishes to challenge the underlying premises of ‘major’ cosmopolitanism without letting go of the unfulfilled emancipatory potential of the concept at large. It wants to rethink cosmopolitanisms in the plural, and trace multiple origins and trajectories of cosmopolitan thought from across the globe. Regarding cosmopolitanisms as emerging through diverse locally, historically and politically specific practices, minor cosmopolitanisms are predicated on difference without abandoning the quest for a shared vision of conviviality and justice. It seeks to answer: how to live at once with our difference and shared struggle? How to think our complicity with even those we most resist? Who sustains the world’s flourishing despite all this?
Remembering German- Australian Colonial Entanglements emphatically promotes a critical and nuanced understanding of the complex entanglement of German colonial actors and activities within Australian colonial institutions and different imperial ideologies.
Case studies ranging from the German reception of James Cook's voyages through to the legacies of 19th- and 20th- century settler colonialism foreground the highly ambiguous roles played by explorers, missionaries, intellectuals and other individuals, as well as by objects and things that travelled between worlds - ancestral human remains, rare animal skins, songs and even military tanks. The chapters foreground the complex relationship between science, religion, art and exploitation, displacement and annihilation. Contributors trace how these entanglements have been commemorated or forgotten over time - by Germans, settler-Australians and Indigenous people.
Bringing to light a critical understanding of the German involvement in the Australian colonial project, Remembering German- Australian Colonial Entanglements will be of great interest to scholars of colonialism, postcolonialism, German Studies and Indigenous Studies. But for the editors' substantial new introductory chapter, these contributions originally appeared in a special issue of Postcolonial Studies.
Why is Cleopatra, a descendent of Alexander the Great, a Ptolemy from a Greek–Macedonian family, in popular imagination an Oriental woman? True, she assumed some aspects of pharaonic imagery in order to rule Egypt, but her Orientalism mostly derives from ancient (Roman) and modern stereotypes: both the Orient and the idea of a woman in power are signs, in the Western tradition, of ‘otherness’ – and in this sense they can easily overlap and interchange.
This volume investigates how ancient women, and particularly powerful women, such as queens and empresses, have been re-imagined in Western (and not only Western) arts; highlights how this re-imagination and re-visualization is, more often than not, the product of Orientalist stereotypes – even when dealing with women who had nothing to do with Eastern regions; and compares these images with examples of Eastern gaze on the same women. Through the chapters in this volume, readers will discover the similarities and differences in the ways in which women in power were and still are described and decried by their opponents.
In the literature of Graeco-Roman antiquity, speaking animals are most prominent in fables, but in fact they are a genre-crossing phenomenon. Ancient traditions of animal speech continue to have an effect on European literature up to the present day and at the same time have parallels in other early civilizations like Ancient Egypt and Mesopotamia.
In the 21 contributions of this interdisciplinary conference volume, international researchers from the fields of Classical Philology, Ancient History, Egyptology, Ancient Oriental Studies, Theology and Jewish Studies explore animal speech in ancient texts from the very beginnings to late antiquity, including their reception. Contexts relating to literary, intellectual, cultural and social history are considered as well as concepts of animality and humanity, building a bridge to the more recently established Human-Animal Studies.
Theories and concepts
(2020)
Urban Change and Citizenship in Times of Crisis addresses the fact that in the beginning of the twenty-first century the majority of the world’s population is urbanised, a social fact that has turned cities more than ever into focal sites of social change. Multiple economic and political strategies, employed by a variety of individual and collective actors, on a number of scales, constitute cities as contested spaces that hold opportunities as well as restrictions for their inhabitants. While cities and urban spaces have long been of central concern for the social sciences, today, classical sociological questions about the city acquire new meaning: Can cities be spaces of emancipation, or does life in the modern city entail a corrosion of citizenship rights? Is the city the focus of societal transformation processes, or do urban environments lose importance in shaping social reality and economic relationships? Furthermore, new questions urgently need to be asked: What is the impact of different historical phenomena such as neo-liberal restructuring, financial and economic crises, or migration flows, as well as their respective counter-movements, on the structure of contemporary cities and on the citizenship rights of city inhabitants? The three volumes address such crucial questions thereby opening up new spaces of debate on both the city and new developments of urbanism.
The contributions to Theories and Concepts offer new theoretical reflections on the city in a philosophical and historical perspective as well as fresh empirical analyses of social life in urban contexts. Chapters not only critically revisit classical and modern philosophical considerations about the nature of cities but no less discuss normative philosophical reflections of urban life and the role of religion in historical processes of the emergence of cities. Composed around the question whether there can be such a thing as a ‘successful city’, this volume addresses issues of urban political subjectivities by considering the city’s role in historical processes of emancipation, the fight for citizenship rights, and today’s challenges and opportunities with regard to promoting social justice, integration, and diversity. Consequentially, theory-driven empirical analyses offer new insight into ways of solving problems in urban contexts and a genuine approach to analyse the Social Quality in cities.
Urban neo-liberalisation
(2020)
The contributions to Urban neo- liberalisation bring together critical analyses of the dynamics and processes neo- liberalism has facilitated in urban contexts. Recent developments, such as intensified economic investment and exposure to aggressive strategies of banks, hedge- funds and investors, and long- term processes of market- and state- led urban restructuration, have produced uneven urban geographies and new forms of exclusion and marginality. These strategies have no less transformed the governance of cities by subordinating urban social life to rationalities and practices of competition within and between cities, and they also heavily impact on city inhabitants’ experience of everyday life. Against the backdrop of recent austerity politics and a marketisation of cities, this volume discusses processes of urban neo- liberalisation with regard to democracy and citizenship, inclusion and exclusion, opportunities, and life- chances. It addresses pressing issues of commodification of housing and home, activation of civil society, vulnerability, and the right to the city.
At times of triumphant neo-liberalism cities increasingly become objects of financial speculation. Formally, social and political rights might not be abolished, yet factually they have become inaccessible for large parts of the population. The contributions gathered in this volume shed light on the clash between the perspectives of restructuring and reordering urban environments in the interest of investors and the manifold and innovative agencies of resistance that claim and stand up for the rights of urban citizenship. Renewed waves of urban transformation employ state coercion to foster the expulsion of poor and marginalised inhabitants from those urban spaces that attract interest from speculators. The intervention of state agencies triggers the work of hegemonic culture for reframing the housing issue and implementing moral and political legitimation, as well as legislation that restricts urban citizenship rights. The case studies of the volume comparatively show the different and sometimes contradictory patterns of these conflicts in Berlin, Sydney, Belfast, Jerusalem, Amsterdam, and İstanbul as well as in metropoles of Latin America and China. Innovative resistance agencies emerge that paint possible paths for the re-establishment of the right to the city as the core of urban citizenship.
Cultures of Intelligence analyses the intelligence services of Germany, Britain, the USA, and France in the first half of the twentieth century. It asks whether there were national traditions in intelligence, or whether each of the sophisticated Western intelligence powers was part of a transnational intelligence culture? The book is a contribution to the cultural turn in intelligence studies. Its underlying purpose is to place intelligence in its proper historical and comparative context. As such it is also a contribution to the history of political culture and its study.
The book offers a comprehensive overview of current research in Slavic linguistics from a theoretical and experimental perspective and from a variety of languages. The selected papers from the 11th European Conference on Formal Description of Slavic Languages (FDSL 11) that took place at the University of Potsdam in 2015, illustrate the advancement of Slavic linguistic studies and their outreach for the development of general linguistics. The guest paper by Noam Chomsky at the beginning of the book sets a clear sign in this direction and may be taken as an acknowledgement of the field.
The Research Data Policy of the University of Potsdam has been ratified by Senate on September 25, 2019 and published in Amtliche Bekanntmachungen “Official Notices” September 30, 2019. It applies to all researchers and research support staff.
The Recommendations for the Handling of Research Data at the University of Potsdam specify and complement the Research Data Policy of the University of Potsdam. They are aimed at all researchers and research support staff have been adopted by Senate’s Commission for Research and Junior Academics (FNK) on on October 9, 2019.
This record provides a non-official translation of both documents from the German original.