Search results
Filter
Filetype
Your search for "*" yielded 547246 hits
No title
Anthropogenic pressure and global change are favouring the increase of infectious diseases not only in humans but also in wildlife. The negative effects of pathogens can be devastating, affecting natural populations and even causing the extinction of species. Therefore, it is fundamental to understand the mechanisms and strategies that these agents develop during their life cycle, as well as the i
Reliability and construct validity of five life domains in the adolescent drug abuse diagnosis instrument in a sample of Swedish adolescent girls in special residential care
Aim: This cross-sectional study investigates the psychometric properties of the Swedish edition of the Adolescent Drug Abuse Diagnosis (ADAD), and specifically examines the internal consistency and construct validity of five life domains reported by female adolescents in special residential care in Sweden (N = 780; Mage = 16 years old). Methods: Principal component analysis and entropy-based analy
Gaia and Hubble Unveil the Kinematics of Stellar Populations in the Type II Globular Clusters ? Centauri and M22
The origin of multiple stellar populations in globular clusters (GCs) is one of the greatest mysteries of modern stellar astrophysics. N-body simulations suggest that the present-day dynamics of GC stars can constrain the events that occurred at high redshift and led to the formation of multiple populations. Here, we combine multiband photometry from the Hubble Space Telescope (HST) and ground-bas
Testing and Improving the IntCal20 Calibration Curve with Independent Records
Connecting calendar ages to radiocarbon (C) ages, i.e. constructing a calibration curve, requires C samples that represent, or are closely connected to, atmospheric C values and that can also be independently dated. In addition to these data, there is information that can serve as independent tests of the calibration curve. For example, information from ice core radionuclide data cannot be directl
Decay studies of the long-lived states in Tl 186
Decay spectroscopy of the long-lived states in Tl186 has been performed at the ISOLDE Decay Station at ISOLDE, CERN. The α decay from the low-spin (2-) state in Tl186 was observed for the first time and a half-life of 3.4-0.4+0.5 s was determined. Based on the α-decay energy, the relative positions of the long-lived states were fixed, with the (2-) state as the ground state, the 7(+) state at 77(5
Chemical absorption of carbon dioxide in non-aqueous systems using the amine 2-amino-2-methyl-1-propanol in dimethyl sulfoxide and N-methyl-2-pyrrolidone
Non-aqueous amine systems have been suggested as energy-efficient alternatives to conventional aqueous amine systems in post-combustion carbon capture, as low regeneration temperatures can be achieved. The solubility of CO2 and heat of absorption in non-aqueous systems were studied using the sterically hindered amine 2-amino-2-methyl-1-propnaol (AMP) in the organic solvent dimethyl sulfoxide (DMSO
On the topology of vortex structures and heat transfer of a gas turbine blade internal tip with different arrangement of delta-winglet vortex generators
This paper aims to provide a novel enhanced heat transfer method for the internal tip surface of a U bend channel of relevance for a gas turbine rotor blade. The DWVGs (delta-winglet vortex generators) pair is arranged at multiple locations on the tip surface. Two types of vortex generators are studied, including common-flow-up and common-flow-down configurations. The inlet channel Reynolds number
Analysis of spatial co-occurrence between cancer and cardiovascular disease mortality and its spatial variation among the Swedish elderly (2010–2015)
CVD and cancer are the two leading causes of death worldwide. Improvement in cancer early detection and treatment has resulted in an increased number of cancer survivors. However, many of the survivors tend to develop CVD often leading to their demise. Conversely, people with pre-existing CVD conditions, especially the elderly, have increased chances of developing cancer and dying from the same. T
Step by step rare-earth catalyzed SiOx annealing and simultaneous formation of Europium- silicide by low coverage of Eu doped Gd2O3 nanoparticles
We report the formation of silicide by annealing of a SiOx surface, with low coverage of Eu doped Gd2O3 nanoparticles. The annealing temperature required for removal of native oxide from the Si substrate decreases with close to 200 °C in presence of the nanoparticles. X-ray photoemission electron microscopy, low-energy electron microscopy and mirror electron microscopy are used to monitor the sili
Toeplitz-based blind deconvolution of underwater acoustic channels using wideband integrated dictionaries
In this paper, we propose a blind channel deconvolution method based on a sparse reconstruction framework exploiting a wideband dictionary under the (relatively weak) assumption that the transmitted signal may be assumed to be well modelled as a sum of sinusoids. Using a Toeplitz structured formulation of the received signal, we form an iterative blind deconvolution scheme, alternatively estimatin
Resolving mobility anisotropy in quasi-free-standing epitaxial graphene by terahertz optical Hall effect
In this work, we demonstrate the application of terahertz-optical Hall effect (THz-OHE) to determine directionally dependent free charge carrier properties of ambient-doped monolayer and quasi-free-standing-bilayer epitaxial graphene on 4H–SiC(0001). Directionally independent free hole mobility parameters are found for the monolayer graphene. In contrast, anisotropic hole mobility parameters with
Aerotaxy : gas-phase epitaxy of quasi 1D nanostructures
Cost- and resource-efficient growth is necessary for many applications of semiconductor nanowires. We here present the design, operational details and theory behind Aerotaxy, a scalable alternative technology for producing quality crystalline nanowires at a remarkably high growth rate and throughput. Using size-controlled Au seed particles and organometallic precursors, Aerotaxy can produce nanowi
Experimental and kinetic modeling study of NO formation in premixed CH4+O2+N2 flames
The nitric oxide (NO) formation in methane (CH4) flames has been widely investigated, with quite a few kinetic mechanisms available in the literature. However, studies have shown that there are often discrepancies between the simulations using various mechanisms and the experimental results. To elucidate reactions leading to these discrepancies, experiments were designed to measure the NO formatio
Plasma Metabolome and Circulating Vitamins Stratified Onset Age of an Initial Islet Autoantibody and Progression to Type 1 Diabetes : the TEDDY Study
Children's plasma metabolome, especially lipidome reflects gene regulation and dietary exposures, heralding the development of islet autoantibodies (IA) and type 1 diabetes (T1D). The TEDDY study enrolled 8676 newborns by screening HLA-DR-DQ genotypes at six clinical centers in four countries; profiled metabolome and measured concentrations of ascorbic acid, 25-hydroxyvitamin D (25(OH)D), erythroc
Urban cooling : Which façade orientation has the most impact on a microclimate?
Deploying solar reflective materials on urban surfaces is known as an effective heat mitigation strategy. Several studies have shown their cooling impacts; however, most of them have focused on rooftops rather than facades. The novelty of this paper is related to exploring the impact of each façade orientation on the corresponding microclimate and energy balance. High albedo materials were impleme
Governing the sharing economy : Towards a comprehensive analytical framework of municipal governance
The sharing economy is having a transformative impact on our cities, and many municipalities are facing a challenge – how to systematically engage with the sharing economy to both mitigate its negative and enhance its positive impacts. Academic understanding of municipal governance mechanisms of the sharing economy remains poor. To address this gap, we develop a comprehensive analytical framework
Tiden har runnit ikapp Sverige : Sju principer för god vattenstyrning och hantering
Vi vill med den här artikeln peka på att Sveriges städer har flera utmaningar kring styrning och hantering av vatten, samt föreslår sju principer för lösningar. Klimatförändringarna och den urbana tillväxten gör att åtgärder behövs nu för att hantera både vattenbrist och översvämning på ett integrerat sätt. Här fokuserar vi på kommunnivå och urbana områden, där vi argumenterar för att det behövs eWe argue in this paper that Swedish urban areas have several urgent challenges when it comes to water governance and we propose seven principles for addressing them. Climate change and urban growth call for swift action to manage both water scarcity and flooding in an integrated way. This paper focuses on the municipal level for which we argue that there is a need for a more systematic approach. T
Women’s Inclusion in the Malian Peace Negotiations: Norms and Practices
This article studies the implementation of the global norm of women’s inclusion in the Malian peace negotiations. It constructs a theoretical framework for analyzing practices of resistance, which object to the validity of the norm, and practices of refinement, which engage with the application of the norm. Based on interviews with women who attended the Malian peace negotiations it finds that wom
Cross-classified Multilevel Analysis of Individual Heterogeneity and Discriminatory Accuracy (MAIHDA) to evaluate hospital performance : the case of hospital differences in patient survival after acute myocardial infarction
OBJECTIVE: To describe a novel strategy, Multilevel Analysis of Individual Heterogeneity and Discriminatory Accuracy (MAIHDA) to evaluate hospital performance, by analysing differences in 30-day mortality after a first-ever acute myocardial infarction (AMI) in Sweden.DESIGN: Cross-classified study.SETTING: 68 Swedish hospitals.PARTICIPANTS: 43 247 patients admitted between 2007 and 2009, with a fi
