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Active galactic nuclei (AGNs) are prominent environments for stellar capture, growth, and formation. These environments may catalyse stellar mergers and explosive transients, such as thermonuclear and core-collapse supernovae (SNe). SN explosions in AGN discs generate strong shocks, leading to unique observable signatures. We develop an analytical model that follows the evolution of the shock prop
Context. We present the discovery of J22564-5910, a new type of hot subdwarf (sdB) which shows evidence of gas present in thesystem and it has shallow, multi-peaked hydrogen and helium lines which vary in shape over time. All observational evidence pointstowards J22564-5910 being observed very shortly after the merger phase that formed it.Aims. Using high-resolution, high signal-to-noise spectrosc
The nexus between the environment, natural resources and (armed) violence has been researched since the end of the nineties, however major theoretical and empirical gaps still exists in research on the precise role of nature or the natural environment during post-conflict and/or peacebuilding, particularly in relation to those countries that have undergone internal armed conflict.This paper presen
Social Enterprise (SE) concerns tackling social issues or fulfilling a social mission driven by compassion and empathy, underpinned by an ethic of care (Andre and Pache, 2016). However, market-driven societies have become permeated by a business rationale whereby SE success is too often measured by growth (Chell et al., 2010; Davies et al. 2018). This paper examines transformations in the affectiv
A unique assemblage consisting of 113 pine samples collected from a submerged Mesolithic landscape in the Haväng area, southern Sweden, was examined to assess the presence of large herbivores, as well as changes in wild-game population density and composition. Bark-stripping damages on prehistoric trees is an extremely underutilized source of information about past game-population dynamics, yet ou
Grassroots Innovations (GI) have became a successful mechanism developed by the associative capacity of people that seek to provide solutions to their own problems relying on the values of solidarity and reciprocity while striving for social transformation (Smith and Seyfang, 2007; Seyfang and Haxeltine, 2012). However, GI still endure three challenges, namely: adaptation vs. transformation, local
Theorizing embeddedness requires sensitivity to the dynamic and multi-layered contexts that entrepreneurship is situated within. Social or network embeddedness offers explanation for how both social and for-profit entrepreneurs can leverage resources within their local environment. Institutional embeddedness is concerned with how the environment for entrepreneurship is shaped by social structures,
A significant part of our cultural heritage consists of wood. Research on historical wooden structures and artefacts thereby provides knowledge of people’s daily lives and the society in which they lived. Dendrochronology is a well-established dating method of wood that can also provide valuable knowledge about climate dynamics, environmental changes, silviculture, and cultural transformations. HoA significant part of our cultural heritage consists of wood. Research on historical wooden structures and artefacts thereby provides knowledge of people’s daily lives and the society in which they lived. Dendrochronology is a well-established dating method of wood that can also provide valuable knowledge about climate dynamics, environmental changes, silviculture, and cultural transformations. Ho
X-ray diffractometers primarily designed for surface X-ray diffraction are often used to measure the diffraction from powders, textured materials and fiber-texture samples in 2θ scans. Unlike in high-energy powder diffraction, only a fraction of the powder rings is typically measured, and the data consist of many detector images across the 2θ range. Such diffractometers typically scan in direction
Detta är en debattartikel. Det är skribenten som står för åsikterna som förs fram i texten, inte Aftonbladet.För det första behöver konsumtionen av animalisk föda minska. Detta minskar utsläppen av den kraftfulla växthusgasen metan som idisslare producerar, skriver Henrik Smith, professor i zooekologi.
We propose a new model that estimates the long- and short-run components of the variances and covariances. The advantage of our model to the existing DCC-based models is that it uses the same form for both the variances and covariances and estimates these moments simultaneously. We apply this model to obtain long- and short-run factor betas for industry test portfolios. We find that the risk premi
Professor i klimatologi: Beslutsfattare måste göra det lättare för individen att välja klimatklokt
BACKGROUND: Our aim was to investigate the prognostic potential of circulating dipeptidyl peptidase 3 (cDPP3) to predict mortality and development of organ dysfunction in a mixed intensive care unit (ICU) population, and for this reason, we analysed prospectively collected admission blood samples from adult ICU patients at four Swedish hospitals. Blood samples were stored in a biobank for later ba
CO2 chemistry has received significant interest in recent time, due to the greenhouse effects of CO2 emissions and the resulting climate change. CO2 reduction reactions, such as methanol synthesis and reverse water-gas shift, is providing a route for recycling of CO2 and thus limiting the CO2 emissions. These reactions are commonly performed over Cu-based catalysts, making the interaction of CO2 a
Proton halo effects in the 8B+64Zn reaction at an energy around 1.5 times the Coulomb barrier have been studied at HIE-ISOLDE CERN using, for the first time, the only existing postaccelerated 8B beam. This, together with the use of a high granularity and large solid angle detection system, allowed for a careful mapping of the elastic angular distribution, especially in the Coulomb-nuclear interfer
Background: The contact allergy prevalences in patch-tested patients are usually higher than those in the population, owing to morbidity-driven selection. Objectives: To examine the differences between two samples, one from the population, one from the patch test clinic, in one area of Germany (Jena, Thuringia). Methods: Between August 2008 and October 2011, a total of 519 participants of the popu
