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Acute type-A aortic dissection–a review

Objectives. Acute type-A aortic dissection (ATAAD) is still one of the most challenging diseases that cardiac surgeons encounter. Design. This review is based on the current literature and includes the results from the Nordic Consortium for Acute Type-A Aortic Dissection (NORCAAD) database. It covers different aspects of ATAAD and concentrates on the outcome of surgical repair. Results and conclus

The Summer of Welcome

Before the so-called refugee influx into Germany peaked in 2015, the term Willkommens- und Anerkennungskultur [welcome culture] emerged as a political response to the negative attitude towards immigrants within the German society. During the summer and autumn of 2015, a new set of welcoming practices emerged as large groups of local Berliners engaged in the refugee situation – some by housing refu

Bridging Connectionism and Relational Cognition through Bi-directional Affective-Associative Processing

Connectionist architectures constitute a popular method for modelling animal associative learning processes in order to glean insights into the formation of cognitive capacities. Such approaches (based on purely feedforward activity) are considered limited in their ability to capture relational cognitive capacities. Pavlovian learning value-based models, being not based purely on fully connected f

Numerical Studies of Methanol PPC Engines and Diesel Sprays

The global environment suffers from utilizing fossil fuels to powering internal combustion engines (ICE), due to the massive amounts of released CO2. Besides the global impact, the local environments experience high concentrations of harmful pollutants such as NOx, CO, soot and particulate matter (PM). The automotive industry is continuously striving to find new solutions to decrease fuel consumpt

The construction of Electromagnetism

We examine the construction of electromagnetism in its current form, and in an alternative form, from a point of view that combines a minimal realism with strict rational demands. We begin by discussing the requests of reason when constructing a theory and next, we follow the historical development as presented in the record of original publications, the underlying epistemology (often explained by

Point of no return : zero philopatry in an otherwise philopatric bird

The return of individual birds to an exact area in successional years is a remarkable phenomenon. Here we report on the remarkably reversed: the complete absence of returning individuals of a migratory passerine with otherwise pronounced philopatry. In Abisko in northern Sweden none of the banded adult willow warblers (Phylloscopus trochilus) returned to breed 2011-14. This is in stark contrast to

Latitudinal differences in long-term migratory change in the willow warbler (Phylloscopus trochilus)

Location is everything and the geographical distribution of populations will make them differentially affected by global warming. Sweden’s north to south orientation presents a great frame for studying the effect of latitudinal climate change. We present a long-term study on the migratory behaviour of two populations of Willow Warbler subspecies (southern Phylloscopus trochilus trochilus and north

Long-term life-history responses to climate change in the willow warbler (Phylloscopus trochilus)

Birds, and especially long-distance migrants, are excellent indicators of climate-induced phenological change. Advanced spring arrival is a typical response reported in a great number of species. Earlier arrival can lead to e.g. earlier egg-laying and thus have potentially great fitness consequences. Studies have suggested that certain aspects of avian life-history can predict a likely response to

Living with males : benefits and costs to females of resident males in Colobus vellerosus

Only in primates is permanent male-female association the most widespread social structure of all. The continuous presence of resident males in the social group can have significant impacts on female fitness, both in forms of costs and benefits. In this study I investigate particular short-term benefits and costs of resident males to females in a population of ursine colobus (Colobus vellerosus).

Changes in Vocal Emotion Recognition Across the Life Span

The ability to recognize emotions undergoes major developmental changes from infancy to adolescence, peaking in early adulthood, and declining with aging. A life span approach to emotion recognition is lacking in the auditory domain, and it remains unclear how the speaker’s and listener’s ages interact in the context of decoding vocal emotions. Here, we examined age-related differences in vocal em

Nationwide prevalence of primary dystonia, progressive ataxia and hereditary spastic paraplegia

Objective: To determine the nationwide prevalence of primary dystonia, ataxia and hereditary spastic paraplegia (HSP) in Sweden. Methods: We extracted data on all patients who were registered in The National Patient Register (NPR) in Sweden (population 9.64 million) at least twice during five consecutive years with a diagnosis of primary dystonia, ataxia or HSP. We excluded patients with an additi

Interplay between amphiphilic peptides and nanoparticles for selective membrane destabilization and antimicrobial effects

As a result of an increasing number of bacteria developing resistance against antibiotics, antimicrobial peptides (AMPs) are attracting significant interest, particularly in relation to identification of peptides displaying potent but selective effects. Much less focus has been placed on delivery systems for AMPs, despite AMPs suffering from delivery challenges related to their size, cationicity,

Higher CSF Tau Levels Are Related to Hippocampal Hyperactivity and Object Mnemonic Discrimination in Older Adults

Mnemonic discrimination, the ability to distinguish similar events in memory, relies on subregions in the human medial temporal lobes (MTLs). Tau pathology is frequently found within the MTL of older adults and therefore likely to affect mnemonic discrimination, even in healthy older individuals. The MTL subregions that are known to be affected early by tau pathology, the perirhinal-transentorhina

Dissolved organic carbon leaching flux in a mixed agriculture and forest watershed in Rwanda

Study region: Rukarara River Watershed (RRW), Rwanda. Study focus: DOC leaching has important environmental consequences for both terrestrial and aquatic ecosystems. This paper measures leached dissolved organic carbon (LDOC) and the factors controlling its variation in the RRW, a mixed agriculture and forest watershed in Rwanda. The study describes the relationship of LDOC with land use/land cove