Determination of spatial position of the upper forest line in Khibiny mountains is important to assess its dynamics caused by global environmental changes. Through analysis of high-resolution satellite images and application of the cartographical method we have determined the position of the forest line and its spatial variations, and explained factors influencing its position. This study has resu

An experimental linear mixture modelling using ground spectroradiometric measurements in the Kola Peninsula, Russia has been carried out to create a basis for mapping vegetation and non-vegetation components in the tundra-taiga ecotone using satellite imagery. We concentrated on the ground level experiment with the goal to use it further for the classification of multispectral satellite imagery th

Climate change is expected to increase woody vegetation abundance in the Arctic, yet the magnitude, spatial pattern and pathways of change remain uncertain. We compared historical orthophotos photos (1952 and 1979) with high-resolution satellite imagery (2015) to examine six decades of change in abundance of white spruce Picea glauca and tall shrubs (Salix spp., Alnus spp.) near the Agashashok Riv

Climate change has the potential to impact headwater streams in the Arctic by thawing permafrost and subsequently altering hydrologic regimes and vegetation distribution, physiognomy and productivity. Permafrost thaw and increased subsurface flow have been inferred from the chemistry of large rivers, but there is limited empirical evidence of the impacts to headwater streams. Here we demonstrate h

Abstract Thiosilvatins are a family of biologically active sulfenylated diketopiperazine natural products. The first members were reported over 40?years ago, but total synthesis of a thiosilvatin has remained elusive. Here, we describe the first, collective, synthesis of the parent epidithiodiketopiperazine (?)-dithiosilvatin and ten related thiosilvatins. Several of the targets are structurally rThiosilvatins are a family of biologically active sulfenylated diketopiperazine natural products. The first members were reported over 40 years ago, but total synthesis of a thiosilvatin has remained elusive. Here, we describe the first, collective, synthesis of the parent epidithiodiketopiperazine (−)-dithiosilvatin and ten related thiosilvatins. Several of the targets are structurally revis

The genetics of β-cell function (BCF) offer valuable insights into the aetiology of type 2 diabetes (T2D)1,2. Previous studies have expanded the catalogue of BCF genetic associations through candidate gene studies3–7, large-scale genome-wide association studies (GWAS) of fasting BCF8,9 or functional islet studies on T2D risk variants10–14. Nonetheless, GWAS focused on BCF traits derived from oral

Amyloid protein deposits are the hallmark of neurodegenerative diseases such as Alzheimer’s, Parkinson’s, or diabetes type II. Although their connection to the diseases is not fully understood, many studies point at intermediate species called oligomers as being the main responsible for the toxicity of these proteins. This makes them strong candidates as therapeutic targets. However, due to their

The capacity for organic micropollutant removal in granular activated carbon (GAC) filters for wastewater treatment changes over time. These changes are in general attributed to changes in adsorption, but may in some cases also be affected by biological degradation. Knowledge on the degradation of organic micropollutants, however, is scarce. In this work, the degradation of micropollutants in seve

När Sveriges regering ger sitt stöd till Israels medvetna erodering av internationell rätt innebär det också ett stöd till Putin och hans krig i Ukraina, skriver statsvetaren Adam Almqvist.

This Regional Outlook focuses on the 2024 Jordanian parliamentary elections, their political consequences, and how the elections were affected by the War on Gaza.

Wheat straw (WS) constitutes a considerable biomass resource and can be used to produce the energy carrier methane through anaerobic digestion. Due to the low contents of several nutrient elements and water in harvested WS, the use of sewage sludge (SS), consisting of primary sludge and waste-activated sludge, as a nutrient source in co-digestion with steam-pretreated wheat straw (PWS) was investi

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

This chapter analyzes the UNHCR Refugee Zakat Fund and the use of Islamic Social Welfare Instruments as a tool for supporting the refugee issue. Looking at the Refugee Zakat Fund from a legal and practical perspective, the research will try to understand the experience of this international non-Muslim organization in managing religious funds for Muslim refugees. The study will address the followin

In unconventional superconductors, coupled charge and lattice degrees of freedom can manifest in ordered phases of matter that are intertwined. In the cuprate family, fluctuating short-range charge correlations can coalesce into a longer-range charge density wave (CDW) order which is thought to intertwine with superconductivity, yet the nature of the interaction is still poorly understood. Here, b

The paper presents an integrated approach for the apportionment of water and sediment sources and pathways in ungauged territories. The approach comprises various elements such as a large-scale semi-distributed hydrological and erosion model (using the SWAT tool), a statistical assessment of regular discharge data, the discrimination of runoff sources using end-member mixing analysis (EMMA), the a