385 research outputs found

    “Fremman for Sjælen Oldtids Aander!” – Historieforestillinger i H.C. Ørsteds digtsamling Luftskibet (1836)

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    Denne artikel undersøger, hvorfor H.C. Ørsted (1777–1851) bruger fiktionalitet i sin digtsamling Luftskibet fra 1836. Ved at kombinere den videnshistoriske ambition i Lorraine Dastons forfatterskab med det fiktionalitetsteoretiske perspektiv fra Richard Walsh argumenterer jeg for, at en væsentlig kontekst for Ørsteds fiktionalitetsbrug er daværende diskussioner om videnskabsfolks historiske rolle. Gennem fiktionaliseringer manifesterer Ørsted sin historieforståelse ved, som han skriver, at lade oldtids ånder fremmane for sjælen. Ørsteds forfatterskab og Luftskibet mere specifikt er ofte blevet forstået som en understregning af Ørsteds forestilling om en sammenhæng mellem kunst og videnskab. Gennem en analyse af to udvalgte digte, “Oldtid og Nutid” og “Aerostaten”, supplerer artiklen denne forestilling ved at fremhæve, at Ørsteds fiktionalitetsbrug også handler om forholdet mellem historie og videnskab

    Up Against The Wall: The Effects of Climate Warming on Soil Microbial Diversity and The Potential for Feedbacks to The Carbon Cycle

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    Earth’s climate is warming, and there is evidence that increased temperature alters soil C cycling, which may result in a self-reinforcing (positive), microbial mediated feedback to the climate system. Though soil microbes are major drivers of soil C cycling, we lack an understanding of how temperature affects SOM decomposition. Numerous studies have explored, to differing degrees, the extent to which climate change may affect biodiversity. While there is ample evidence that community diversity begets ecosystem stability and resilience, we know of keystone species that perform functions whose effects far outweigh their relative abundance. In this paper, we first review the meaning of microbial diversity and how it relates to ecosystem function, then conduct a literature review of field-based climate warming studies that have made some measure of microbial diversity. Finally, we explore how measures of diversity may yield a larger, more complete picture of climate warming effects on microbial communities, and how this may translate to altered carbon cycling and greenhouse gas emissions. While warming effects seem to be ecosystem-specific, the lack of observable consistency between measures is due in some part to the diversity in measures of microbial diversity

    Long-term pattern and magnitude of soil carbon feedback to the climate system in a warming world

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    Author Posting. © The Author(s), 2017. This is the author's version of the work. It is posted here for personal use, not for redistribution. The definitive version was published in Science 358 (2017): 101-105, doi:10.1126/science.aan2874.In a 26-year soil warming experiment in a mid-latitude hardwood forest, we documented changes in soil carbon cycling to investigate the potential consequences for the climate system. We found that soil warming results in a four-phase pattern of soil organic matter decay and carbon dioxide fluxes to the atmosphere, with phases of substantial soil carbon loss alternating with phases of no detectable loss. Several factors combine to affect the timing, magnitude, and thermal acclimation of soil carbon loss. These include depletion of microbially accessible carbon pools, reductions in microbial biomass, a shift in microbial carbon use efficiency, and changes in microbial community composition. Our results support projections of a long-term, self-reinforcing carbon feedback from mid-latitude forests to the climate system as the world warms.This research has been supported by grants from the Department of Energy - DE-SC0010740; DOE DE-SC0016590: and the National Science Foundation - DEB 1237491 (LTER) ; DEB 1456528 (LTREB)

    Aesthetic Approaches to Human-Computer Interaction

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    Proceedings of the NordiCHI 2004 Workshop, Tampere, Finland, October 24, 200

    A pandemic crisis seen from the screen : a reflection on pandemic imagination

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    Since the COVID-19 pandemic faded in early 2022, the agenda has been overtaken by other major issues, such as the wars in Ukraine and Gaza, and this has led to a certain tiredness if not bare repression of the pandemic experience. However, we believe it is important to revisit the cultural experience of the pandemic not only to reflect on how it challenged us and our societies but also to point out alternatives that are still relevant now, even if other problems have occurred (see figure 12.1). In fact, the very experience of the pandemic as a hyperobject might be worth reflecting on, as we will attempt to do below, in order to understand and deal with other continuing hyperobject crises such as racism, inequality and climate destruction (Morton 2013). Our focus in the following will be on our research on electronic literature, digital artists and the pandemic, which we will present below, including a focus on our chosen work by the artist Ben Grosser The Endless Doomscroller, which will be put in relation to other works from our exhibition, collection and documentary

    Retorikkens rum eller byens hundrede tusinde romaner

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    Søren Pold: Retorikkens rum eller byens hundrede tusinde romane

    Soil and vegetation property data from the Ultuna R3-RAM56 long-term soil amendment experiment, 1956-2023

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    The R3-RAM56 long-term experiment in Ultuna, Sweden has tracked the effect of organic and inorganic amendments on agricultural crop and soil properties for the past almost 70 years. Aboveground crop biomass has been collected annually since the beginning of the experiment, while topsoil samples were collected three times in the first twenty years and every other year since 1963. We report crop yields and nutrient content, as well as carbon, nitrogen, and micronutrient content for soils and amendments. The data presented here provides the backbone for numerous published studies in international peer-reviewed journals, and provides a useful time series for calibrating models of soil carbon and nitrogen stocks under varying agricultural management practices in relation to soil amendments. (c) 2025 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/
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