326 research outputs found

    Celebrating the nation: the case of Upper Silesia after the plebiscite in 1921

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    Book description: The relationship between states, societies, and individuals in Central and Eastern Europe has been characterised by periods of change and redefinition. The current political, economic, social and cultural climate necessitates a discussion of these issues, both past and present. It is this theme which the proposed publication intends to discuss using a selection of papers given at the 5 th Annual Postgraduate Conference on Central and Eastern Europe held at the UCL School of Slavonic and East European Studies (SSEES) in 2003. The papers represent work from young international scholars from Europe and North America writing on Central and Eastern Europe. The book consists of seven papers and develops an interdisciplinary framework reflecting the range of topics discussed during the conference. It embraces the regional breadth of Central and Eastern Europe containing analyses of Russia, the former Soviet Republics, Central Europe and South Eastern Europe. The papers chosen cover a variety of fields and adopt a corresponding range of approaches with a view to assessing from a multidisciplinary perspective the relationship between state, society and individuals. The papers in the book have been ordered chronologically. The volume starts with an analysis by Julia Mannherz of social conflict in late imperial Russia and moves on to Sergei Zhuk’s discussion of the Stundist movement in Ukraine. The third paper from Stefan Detchev is a discussion of the late-nineteenth-century politics of commemoration surrounding the Bulgarian war of independence. The theme of the politics of commemoration is also present in Andrzej Michalczyk’s analysis of the commemoration of the plebiscite in Silesia by Germans and Poles during the interwar period. Michalczyk examines how a shared event is commemorated and interpreted differently by the two national groups. The idea of common and shared histories is further developed by Rüdiger Ritter in his study of the history and the historiography of post-Communist Poland, Belarus and Lithuania. The move into the contemporary period is completed in the final two papers. The use of historical imagery for political purposes is explored in Markus Wien’s study of the King Simeon II Party in Bulgaria as well as the way in which the historical image of the monarchy has been changed for political purposes during the transition from communism to democracy. The final paper by Maria Aluchna continues the discussion of the process of transition by examining the economic transformation from a communist command economic system to a modern capitalist economy

    An integrative description of a limnoterrestrial tardigrade from the Philippines, Mesobiotus insanis, new species (Eutardigrada : Macrobiotidae : harmsworthi group)

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    The Philippines is considered a country with high biodiversity and endemism. However, the status of its tardigrade fauna is still practically unknown. In this study, a limnoterrestrial eutardigrade, Mesobiotus insanis, new species, from Diliman, Quezon City, located on the largest island in the Philippine Archipelago is described. Integrative taxonomy, via the combined morphological and morphometric analyses (imaging via phase contrast [PCM] and scanning electron microscopy [SEM]) aided with a molecular analysis (DNA barcoding of the 18S rRNA, 28S rRNA, ITS-2, and COI markers), was employed to verify the status of the population as a new species. Mesobiotus insanis, new species, differs from its congeners mainly by its unique egg morphology characterised by an exceptionally complex sculpturing of the eggshell areolae in addition to other morphometric characters. The molecular analysis showed that the new species is genetically closest to Mesobiotus philippinicus Mapalo, Stec, Mirano-Bascos & Michalczyk, 2016, recently described also from the Philippines

    Sharing Our Stories With the Future Healthcare Workforce: Perspectives of Low-Income Poverty Simulation Volunteers

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    Practitioner attitudes about low-income patients may impact clinical care and outcomes. Poverty simulation, employing low-income community volunteers, is an effective teaching tool in improving attitudes toward poverty among health professions students. This study explores the experiences of these essential simulation volunteers who share their stories with student participants. Focus groups were conducted with low-income community members who staff resource tables during poverty simulations. Data were audio-recorded, transcribed, and analyzed using a grounded theoretical approach. Participants spoke of the systemic nature of poverty and identified multiple barriers to healthcare access. Perceived lower quality of care, mistrust in health professionals, and a lack of continuity of care were discussed. In regards to the simulation, participants were empowered through sharing their stories with students, and offered suggestions for program improvement. Simulation provides a forum for community members to educate the future healthcare workforce on systemic barriers faced by low-income populations

    20 years of Zootaxa: Tardigrada (Ecdysozoa: Panarthropoda).

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    Over the last two decades, Zootaxa has hosted nearly 200 papers concerning tardigrade taxonomy, systematics, phylogeny, and evolution. A total of 160 researchers from all continents (except the Antarctic) published descriptions of almost 200 new taxa, mostly species, but also genera and higher taxonomic ranks, such as families and superfamilies. This editorial is dedicated to the late Professor Clark W. Beasley who was the first tardigrade Associate Editor for Zootaxa

    Zinc and infant nutrition

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    Zinc is essential for a wide variety of cellular processes in all cells. It is a critical dietary nutrient, particularly in the early stages of life. In the early neonatal period, adequate sources of zinc can be obtained from breast milk. In rare circumstances, the mammary gland produces zinc deficient milk that is potentially lethal for exclusively breast-fed infants. This can be overcome by zinc supplementation to the infant. Alterations to key zinc transporters provide insights into the mechanisms of cellular zinc homeostasis. The bioavailability of zinc in food depends on the presence of constituents that may complex zinc. In many countries, zinc deficiency is a major health issue due to poor nourishment. Young children are particularly affected. Zinc deficiency can impair immune function and contributes to the global burden of infectious diseases including diarrhoea, pneumonia and malaria. Furthermore, zinc deficiency may extend its influence across generations by inducing epigenetic effects that alter the expression of genes. This review discusses the significance of adequate zinc nutrition in infants, factors that influence zinc nutrition, the consequences of zinc deficiency, including its contribution to the global burden of disease, and addresses some of the knowledge gaps in zinc biology

    Ammonia volatilization from irrigated and non-irrigated winter wheat plots in the North China Plain - Quantification and modeling

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    China’s growing population led to a drastic intensification of agriculture and livestock production in the last 50 years. Excessive mineral nitrogen (N) fertilizer application and intensive livestock production cause high N losses to the environment. Pathways of N losses may include gaseous N emissions via nitrification/denitrification (N2O, N2), ammonia (NH3) volatilization, nitrate leaching and surface run-off from soils. Ammonia emissions are one of the most important N loss pathways in the North China Plain (NCP) contributing to soil acidification, eutrophication of ecosystems and causing human health problems through combining with particles in the atmosphere which also impair visibility. For developing mitigation measures in a winter wheat cropping system, systematic measurements of NH3 volatilization were conducted in the NCP in Zhengding, 260 km southwest of Beijing. Ammonia emissions were measured with the calibrated Dräger-Tube method during the main crop growing season of winter wheat from April to June 2016. The treatments included urea and urea followed by immediate irrigation. Additionally, soil samples were taken from three depth increments (0-30, 30-60 and 60-90 cm) before and after fertilization and the NH3 volatilization was simulated with the HERMES model. The soils showed highest mineral nitrogen (Nmin) contents of up to 340 kg ha-1 (0-90 cm) after fertilization. A decrease in the calcium carbonate content and soil pH in topsoils (0-20 cm) (pH: 6.7) compared to subsoil horizons (pH: 7.7) was attributed to the long-term application of ammonium-based fertilizers as well as to high atmospheric deposition rates of ammonium and sulfuric compounds. Urea applied to winter wheat showed an NH3 loss equal to 22% the of applied N. Application of urea to winter wheat followed by irrigation yielded a reduction of the NH3 volatilization to 0.1% of the applied N. An improved N management based on the soil Nmin content is recommended to improve nitrogen use efficiency and to reduce N losses to the environment. Irrigation after fertilization can be recommended for reduction of NH3 volatilization, provided that other N loss pathways are of minor importance. The NH3 volatilization sub-module of the HERMES model enabled to simulate ammonia volatilization in the NCP satisfactorily. It is suggested to validate the model with further data sets from the NCP or from regions with comparable conditions

    Sexual selection protects against extinction

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    Reproduction through sex carries substantial costs, mainly because only half of sexual adults produce offspring. It has been theorised that these costs could be countered if sex allows sexual selection to clear the universal fitness constraint of mutation load. Under sexual selection, competition between (usually) males, and mate choice by (usually) females create important intraspecific filters for reproductive success, so that only a subset of males gains paternity. If reproductive success under sexual selection is dependent on individual condition, which depends on mutation load, then sexually selected filtering through ‘genic capture’ could offset the costs of sex because it provides genetic benefits to populations. Here, we test this theory experimentally by comparing whether populations with histories of strong versus weak sexual selection purge mutation load and resist extinction differently. After evolving replicate populations of the flour beetle Tribolium castaneum for ~7 years under conditions that differed solely in the strengths of sexual selection, we revealed mutation load using inbreeding. Lineages from populations that had previously experienced strong sexual selection were resilient to extinction and maintained fitness under inbreeding, with some families continuing to survive after 20 generations of sib × sib mating. By contrast, lineages derived from populations that experienced weak or non-existent sexual selection showed rapid fitness declines under inbreeding, and all were extinct after generation 10. Multiple mutations across the genome with individually small effects can be difficult to clear, yet sum to a significant fitness load; our findings reveal that sexual selection reduces this load, improving population viability in the face of genetic stress

    Sexual selection protects against extinction

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    Reproduction through sex carries substantial costs, mainly because only half of sexual adults produce offspring1. It has been theorized that these costs could be countered if sex allows sexual selection to clear the universal fitness constraint of mutation load2,3,4. Under sexual selection, competition between (usually) males and mate choice by (usually) females create important intraspecific filters for reproductive success, so that only a subset of males gains paternity. If reproductive success under sexual selection is dependent on individual condition, which is contingent to mutation load, then sexually selected filtering through ‘genic capture’5 could offset the costs of sex because it provides genetic benefits to populations. Here we test this theory experimentally by comparing whether populations with histories of strong versus weak sexual selection purge mutation load and resist extinction differently. After evolving replicate populations of the flour beetle Tribolium castaneum for 6 to 7 years under conditions that differed solely in the strengths of sexual selection, we revealed mutation load using inbreeding. Lineages from populations that had previously experienced strong sexual selection were resilient to extinction and maintained fitness under inbreeding, with some families continuing to survive after 20 generations of sib × sib mating. By contrast, lineages derived from populations that experienced weak or non-existent sexual selection showed rapid fitness declines under inbreeding, and all were extinct after generation 10. Multiple mutations across the genome with individually small effects can be difficult to clear, yet sum to a significant fitness load; our findings reveal that sexual selection reduces this load, improving population viability in the face of genetic stress.We thank the Natural Environment Research Council and the Leverhulme Trust for financial support, D. Edward for statistical advice and colleagues at the 2013 Biology of Sperm meeting for comments that improved analytical design and interpretation.Peer reviewedPeer Reviewe
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