Search results

The size and power of tests for smooth structural change are evaluated in the presence of random measurement error in the explanatory variable or outliers in the dependent variable of a univariate regression model. It is shown that the considered tests are robust to measurement error of a magnitude that can be found in real economic data. By contrast,outliers are found to distort both the size and

Crocodilians are the closest living relatives of birds and share many ecological challenges with mammalian apex predators. They evolved perception pathways that share similarities with both taxa, birds and mammals. Due to their position in the tree of life, crocodilians therefore represent a promising intermediate model for comparative research. In this review, the different modalities of percepti

Metal halide perovskites are an important class of emerging semiconductors. Their charge carrier dynamics is poorly understood due to limited knowledge of defect physics and charge carrier recombination mechanisms. Nevertheless, classical ABC and Shockley-Read-Hall (SRH) models are ubiquitously applied to perovskites without considering their validity. Herein, an advanced technique mapping photolu

Recognition of asthma as a heterogeneous disease revealed different potential molecular targets and urged the development of targeted, customized treatment modalities. Evidence was provided for different inflammatory subsets of asthma and more recently, further refined to T helper (Th)2-high and Th2-low subphenotypes with different responsiveness to standard and targeted pharmacotherapy. Given the

The stability of DNA in solution and the phase behavior in mixtures with dodecyltrimethylammonium bromide (DTAB) were investigated. By means of circular dichroism, UV absorption, and differential scanning calorimetry, we found that for dilute solutions of DNA with no addition of salt the DNA molecules are in the single-stranded conformation, whereas the addition of a small amount of NaBr, 1 mM, is

The PITX family of transcription factors regulate the development of many organs. Pitx1 mutants have a mild pituitary phenotype, but Pitx2 is necessary for the development of Rathke's pouch, expression of essential transcription factors in gonadotropes, and expansion of the Pit1 lineage. We report that lack of Pitx2 causes the pouch to undergo excessive cell death, resulting in severe pituitary hy

De slår ett slag för hjärtat – Vetenskap och Hälsa Hoppa till innehåll Vetenskap och hälsa Populärvetenskapligt om medicinsk forskning i Skåne Teman Podd Tidskrift Prenumerera Om webbplatsen Kontakt Sök Sök De slår ett slag för hjärtat 2019-03-26 ⚠️ Den här artikeln är mer än 5 år gammal. Nya forskningsrön kan ha tillkommit. Alla har känt hjärtat slå extra hårt och snabbt någon gång. Det kan vara

https://www.vetenskaphalsa.se/de-slar-ett-slag-for-hjartat/ - 2026-07-12

Since the 1980s, China’s central government has created various model and incentive schemes aimed at systematically and concurrently promoting innovative approaches for protecting the urban ecological environment. In this context, programmes such as the ‘model city for protecting the environment’, ‘garden city’, ‘eco-city’, or ‘low-carbon city’ have become an integral part of China’s system for ur

The vascular system is vital for all tissues and the interest in its visualization spans many fields. A number of different plant-derived lectins are used for detection of vasculature; however, studies performing direct comparison of the labeling efficacy of different lectins and techniques are lacking. In this study, we compared the labeling efficacy of three lectins: Griffonia simplicifolia isol

Following the quantitative turn in linguistics, the field appears to be in amethodological “wild west” state where much is possible and new frontiers arebeing explored, but there is relatively little guidance in terms of firm rules orconventions. In this article, we focus on the issue of variable selection in regression modeling. It is common to aim for a “minimal adequate model” and eliminate “no

This chapter explores how the two contemporary political parties, the Sweden Democrats and the Danish People’s Party, use the Vikings and the Viking Age as symbols in their national mythmaking. It examines the political dimensions of public history and the way in which these parties draw historical parallels between the Viking Age and the present in order to call for action. The relationship betwe

Background: Social media has permeated practically every aspect of our everyday lives. One of these social media platforms is Instagram, which enables people to connect, communicate and share information with other users. The potential of these and social media influencers (SMI) to influence users’ behaviours is considerable. However, sustainability influencers, an emerging type of SMIs, have gain