Filtyp
In multicellular organisms cells grow, divide and adopt different fates, resulting in tissues and organs with specific functions. In recent years, a number of studies have brought quantitative knowledge about how these processes are orchestrated, shedding new light on cells as active and central players in morphogenesis. We explore recent advances in understanding plant morphogenesis from a quanti
In plants the dorsoventral boundary of leaves defines an axis of symmetry through thecentre of the organ separating the top (dorsal) and bottom (ventral) tissues. Although thepositioning of this boundary is critical for leaf morphogenesis, how the boundary is established andhow it influences development remains unclear. Using live-imaging and perturbation experimentswe show that leaf orientation,
Evolution involves developmental change. Species comparisons play an important role in comparative cognition because they can uncover common patterns and shared principles in cognitive evolution. Developmental studies reveal foundational elements of cognitive abilities and how they are constructed and integrated. Sensorimotor cognition is such a key element that forms the foundation for later-deve
Multicellular development produces patterns of specialized cell types. Yet, it is often unclear how individual cells within a field of identical cells initiate the patterning process. Using live imaging, quantitative image analyses and modeling, we show that during Arabidopsis thaliana sepal development, fluctuations in the concentration of the transcription factor ATML1 pattern a field of identic
We evaluate the impact on earnings, pensions, and further labor market outcomes of two parallel educational reforms increasing instructional time in Swedish primary school. The reforms extended the annual term length and years of compulsory schooling by comparable amounts. We find striking differences in the effects of the two reforms: at 5% the returns to the term length extension were sizeable a
The shoot apical meristem (SAM) is at the origin of all the plant above-ground organs (including stems, leaves and flowers) and is a biological object of interest for the understanding of plant morphogenesis. The quantification of tissue growth at a cellular level requires the analysis of 3D microscopic image sequences of developing meristems. To address inter-individual variability, it is also re
Hydrogen has been proposed as an energy carrier in storage systems, fueled by excess electricity from volatile power production and re-electrified in times of electricity shortage. Unfortunately, these storage systems suffer from fairly poor return efficiencies. There is however a multitude of other production methods and usages that not seldom are intermixed with storage, creating possibilities f
The emerging concept of sustainable welfare attempts to integrate environmental sustainability and social welfare research. Oriented at a mid-term re-embedding of Western production and consumption norms into planetary limits, it suggests the development of “eco-social” policies in the rich countries. In this theoretical context, this article empirically investigates the relationships between atti
The effect of alcohol intake on varicose veins (VV) has not been determined by its consumption level. The aim of this study was to investigate the association between alcohol intake and VV in an elderly general population. Using a cross-sectional approach, the Shimane CoHRE Study data, comprising a total of 1060 participants, were analyzed. By multivariate regression analysis adjusted with basic c
BACKGROUND: The heritability of venous thromboembolism (VTE) is only partially explained by variants in 17 previously VTE-associated genes.OBJECTIVE: This article screens for additional rare variants in the 17 genes and investigates the relative contributions of pro- and anticoagulant genes to VTE.PATIENTS AND METHODS: Ninety-six VTE patients from the population-based Malmö Thrombophilia Study wer
A measure of the Swedish money stock is identified in this paper using an empirical approach. Correlation coefficients between quarterly changos in a number of monetary assets and economic activity are calculated for leading, concurrent and lagging observations. Coins and notes exhibit close simultaneous covariation with economic activity. Commercial bank, savings bank and Post Office Bank deposit
Finite element (FE) models based on quantitative computed tomography (CT) images are better predictors of bone strength than conventional areal bone mineral density measurements. However, FE models require manual segmentation of the femur, which is not clinically applicable. This study developed a method for automated FE analyses from clinical CT images. Clinical in-vivo CT images of 13 elderly fe
Police work may include performing repeated tasks under the influence of psychological stress, which can affect perceptual, cognitive and motor performance. However, it is largely unknown how repeatedly performing stressful tasks physically affect police officers in terms of heart rate and pupil diameter properties. Psychological stress is commonly assessed by monitoring the changes in these bioma
