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Efter regn kommer sol – och har man tur får man se en vackert lysande regnbåge. I Bibeln skapar Gud den som ett löfte om att inga fler syndafloder ska komma. I irländsk folktro finns en skatt vid regnbågens slut, och i den nordiska mytologin förbinder den människornas värld med Asgård. Men vad är regnbågen egentligen, och hur funkar den?
Confinement of reactants within nanoscale spaces of low-dimensional materials has been shown to provide reorientation of strained reactants or stabilization of unstable reactants for synthesis of molecules and tuning of chemical reactivity. While few studies have reported chemistry within zero-dimensional pores and one-dimensional nanotubes, organic reactions in confined spaces between two-dimensi
Light-emitting diodes (LEDs) have been investigated during the past decades, for which a major challenge is total internal reflection that limits the light extraction efficiency. ‘Nanotree’ LEDs elegantly solve this bottleneck. Lower band gap nanowire branches are grown on higher band gap core wires. Charge carriers diffuse into the branches and recombine there. Total internal reflection is impede
We present processed light emitting diodes (LED) devices based on GaInP core-branch nanowire (NW) structures. The LEDs rely on the charge carrier diffusion induced light emitting diode concept. The GaInP core has a higher Ga content than the branches to induce diffusion of carriers from the cores into the branches. The branches play the role of the active region in the structure, where charge carr
The recent discovery of well-preserved fragments of Sphenothallus in the Central Clare Group (Pennsylvanian) of western Ireland provides new insights into the morphology of this enigmatic, putative cnidarian. The specimens demonstrate a morphological plasticity, including features not previously described for Sphenothallus, such as the presence of flat sides and angular lateral margins, non-bilate
Recension av Jonathan Freedland, Det första vittnet. Mannen som flydde från Auschwitz
Recension av Nils Uddenberg, Drömmaren. En bok om Sven Hedin
Recension av Fredrik Eriksson, Lars Ericson Wolke & Gunnar Åselius, Från Savolaxbrigaden till Särskilda skyddsgruppen. Svenska specialoperationer och specialförband från medeltid till 1995
The in-flow focusing method, introduced herein, enables rapid and straightforward measurements of the whole-channel acoustic energy of acoustic flow-through devices. The method is applied to assess the whole-channel acoustic energy and acoustophoretic efficiency frequency spectra of a bottom-actuated silicon-glass and a side-actuated glass chip. The input variables are the time-independent geometr
Recension av Henrik Berggren, Landet utanför 1–3: Sverige och kriget 1939–1940 (2018); Sverige och kriget 1940–1942 (2021); Sverige och kriget 1943–1945 (2023)
Bulk-wave-acoustofluidic devices provide strong acoustic fields and high device efficiency, thereby offering high-throughput capability when processing biological samples. Such devices are typically driven by lead zirconate titanate (PZT) transducers, which contain a high content of lead, inevitably resulting in environmental and biocompatibility issues. Replacing PZT with lead-free piezoelectric
Artikel i ett specialtema om SVT:s dokumentärfilmsserie Historien om Sverige.
Introduction: Proteomic analysis of injured human peripheral nerves, particularly focusing on events occurring in the proximal and distal nerve ends, remains relatively underexplored. This study aimed to investigate the molecular patterns underlying a digital nerve injury, focusing on differences in protein expression between the proximal and distal nerve ends. Methods: A total of 26 human injured
This article traces publishing patterns in the Swedish humanities between 1840 and 1880; a period characterized by a new publishing regime yet bridging two dominant publication forms, the dissertation, and the disciplinary journal. Using the prominent historian Wilhelm Erik Svedelius as an entry point, the article charts how scholars in the humanities navigated the publishing landscape in a more d
A range of charge-stabilized aqueous polyurethane (PU) dispersions comprising hard segments formed from hydrogenated methylene diphenyl diisocyanate (H12MDI) with dimethylolpropionic acid (DMPA) and ethylenediamine, and soft segments of poly(tetramethylene oxide) of different molecular weights are synthesized. Characterization of the dispersions by mass spectrometry, gel permeation chromatogr
Background: A substantial proportion of individuals with COPD have never smoked, and it is implied to be more common than previously anticipated but poorly studied. Aim: To describe the process of recruitment of never-smokers with COPD from a population-based cohort (n = 30 154). Methods: We recruited never-smokers with COPD, aged 50–75 years, from six University Hospitals, based on: 1) post bronc
The European Union has committed to achieving climate neutrality by the year 2050, with Sweden setting an even more ambitious target of reaching this milestone by 2045. A subgroup comprising 23 pioneering Swedish municipalities, collectively representing 40% of the country's population, aims to attain climate neutrality by 2030. Globally, buildings and construction sector contribute nearly 40% of
This paper analyses three governments’ institutional advisory mechanisms designed to shape and support universities and individual researchers’ decisions regarding international academic collaboration. Although ostensibly country-agnostic, increasing geopolitical tensions with China have catalyzed the creation of these new structures. Each mechanism seeks to address the complex trade-offs in inter
This explorative literature review aims to examine the content and methodologies of recent empirical studies on the aspirations of youth in situations of migration in Europe. The search yielded 30 peer-reviewed social science publications in English for the period 2010–2022, including both intra-European migrants ages 10–24 and youth with backgrounds from outside Europe. Contextual analysis was us
The existence and significance of endogenous cytosolic and nuclear mono-ADP-ribosylation has been a matter of debate. Today, evidence suggests that the human enzymes that catalyze the reaction have been rounded up. Moreover, substrate proteins and specific functions for mono-ADP-ribosyltransferases are beginning to be defined. Reader domains that specifically recognize mono-ADP-ribosylated target
