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As a global society we are entering an era where land areas and land-based resources are coming to the fore once again for capital accumulation and economic growth, for the first time since the end of the 18th century when Malthus forecasted a contradiction between population growth and agricultural output. That constraint on economic growth, imposed by limited land areas, was overcome by the comb
Mangroveskogens ekosystem är ett tropiskt kustsamhälle bebott av organismer anpassade till den stressfulla miljön i tidvattenszonen. Mangroveskogen har på senare år blivit erkänd för de viktiga ekosystemtjänsterna den erbjuder. Trotts detta hotas den av mänskliga aktiviteter, och en tredjedel av världens naturliga mangroveskog uppskattas redan ha gått förlorad. Ansträngningar har gjorts för att beThe mangrove ecosystem is a tropical coastal community inhabited by organisms adapted to the stressful environment of the tidal zone. Mangrove ecosystems has in recent years been noted for the important ecosystem services they offer. Still, they are threatened by anthropogenic activities and it has been estimated that a third of the world’s natural mangrove cover has already been lost. Efforts hav
Shared micro-mobility services are increasingly embraced by cities around the world in recent years. Their benefits over other transportation modes in certain frames encourage traffic/urban planners, public authorities to establish such systems in urban areas. However, planning the placement, size and operation of such beneficial micro-mobility mode is a vital issue that concerns designers. Severa
Tidsberoende effekter, såsom krypning, krympning och stålrelaxation, är ofta svåra att prediktera när det kommer till förspända betongkonstruktioner. Krypning som ett fenomen är komplicerat och förenklas därför i gällande byggnormer (Eurocode), för att underlätta konstruktörens arbete. När det gäller etappvis spännarmerade betongbroar har dessa förenklingar visat sig ge felaktiga prognoser av de tLong-term effects, such as creep, shrinkage, and steel relaxation, are often difficult to predict for prestressed concrete structures. Creep as a phenomenon is complicated to describe and is therefore simplified in the current building standards, to better accommodate the designer. When dealing with segmentally constructed prestressed concrete bridges, these simplifications have shown to provide i
Outside the box. On archivists' views on objects in municipal archives Historically objects in archives and objects as "documents" have been discussed for a long time. The focus of the discussion has generally been on defining what is a document, and what is not, and later what is in turn an act and thus belongs in the archive, and what does not. An object is generally not defined a
Changes in the accumulation of heavy metals (Cd, Cu, Hg, Fe, Mn, Ni, Pb, Zn), arsenic (As), and selenium (Se) in sediment of pristine lake in northern Sweden were studied by making measurements at different depths in a sediment core. The sediment core was extracted from the deepest part of the lake Sautusjärvi, close to the village Jukkasjärvi. The sediment samples were transported in a cooler to
Forest fire is known as an important natural hazard in many countries which causes financial damages and human losses; thus, it is necessary to investigate different aspects of this phenomenon. In this study, performance of four models of linear and quadratic discriminant analysis (LDA and QDA), frequency ratio (FR), and weights-of-evidence (WofE) was investigated to model forest fire susceptibili
The steel industry emits 2,400–2,713 Mt CO2 and 12 Mt of fugitive methane globally each year, yet progress towards decarbonization has been limited. In this Review, we examine the potential, feasibility and barriers to decarbonization of the steel sector. The blast furnace–basic oxygen furnace (BF–BOF) accounts for ~72% of global steel production and has the highest carbon emission intensity of ex
The growing interdependence and interconnectedness of the global community set the pace and frame for the evolution of foreign policy. Diplomacy formerly being the reserve of international communication has consequently been forced to change and branch out. This essay attempts to view these changes and their context at the example of US foreign policy in Pacific Asia. Both hard power translating i
Carbon pricing, including carbon taxes and emissions trading, has been adopted by different kinds of polities worldwide. Yet, beyond the increasing adoption over time, little is known about what polities–countries as well as sub- and supranational entities–adopt carbon pricing and why. This paper explores patterns of adoption (both implemented policies and those scheduled to be) through cluster an
BACKGROUND: Post-traumatic syringomyelia (PTS) affects patients with chronic spinal cord injury (SCI) and is characterized by progressive deterioration of neurological symptoms. To improve surgical treatment, we studied the therapeutic effects of neuroepithelial-like stem cells (NESCs) derived from induced pluripotent stem cells (iPSCs) in a rat model of PTS. To facilitate clinical translation, we
The widely accepted “Milankovitch theory” explains insolation-induced waxing and waning of the ice sheets and their effect on the global climate on orbital timescales. In the past half century, however, the theory has often come under scrutiny, especially regarding its “100-ka problem.” Another drawback, but the one that has received less attention, is the “monsoon problem,” which pertains to the
Shelterbelts (or windbreaks) can effectively improve the microclimate and soil conditions of adjacent farmland and thus increase crop yield. However, the individual contribution of these two factors to yield changes is still unclear since the short-term effect from the microclimate and the accumulated effect from the soil jointly affect crop yield. The latter (soil effect) is supposed to remain af
Ending the use of unabated coal power is a key climate change mitigation measure. However, we do not know how fast it is feasible to phase-out coal on the global scale. Historical experience of individual countries indicates feasible coal phase-out rates, but can these be upscaled to the global level and accelerated by deliberate action? To answer this question, we analyse 72 national coal power p
Top predators can affect the behaviour of prey species via lethal (direct kill) or non-lethal effects (i.e., through predation risk). For example, prey species may move from areas perceived as risky to safer spaces where predation risk is lower, which can have important consequences for investment in foraging, movement, and mating, and for the behaviour and habitat use of other species, such as me
Things such as organizations, persons, or locations are ubiquitous in all texts circulating on the internet, particularly in the news, forum posts, and social media. Today, there is more written material than any single person can read through during a typical lifespan. Automatic systems can help us amplify our abilities to find relevant information, where, ideally, a system would learn knowledge
In recent years, an increasing number of ecosystems are threatened by seasonal flooding, changing non-flooded shoreland (NF) into seasonally flooded wetland (SF), but the consequences of this hydrological change for soil organic carbon (SOC) dynamics remain unknown. In this study, we investigated how the SOC content was determined by flooding duration and soil physicochemical variables in adjacent
