Popular Abstract in Swedish ”Har en galopperande häst vid något tillfälle alla hovarna i luften samtidigt?” Den här till synes enkla frågan är inte helt enkel att svara på eftersom det inte går att avgöra med blotta ögat om så är fallet. För att avgöra om hovarna verkligen är i luften på samma gång behöver vi andra redskap med bättre tidsupplösning än våra ögon. Första gången någon lyckades göra eOne objective of attosecond science is to study electron dynamics in atoms and molecular systems on their natural time scale. This can be done using attosecond light pulses. Attosecond pulses are produced in a process called high-order harmonic generation, in which a short, intense laser pulse interacts with atoms or molecules in a highly nonlinear process, leading to the generation of high-order

Design To study the association between mode of delivery and neonatal mortality in second twins. To study the association between caesarean delivery and mortality with minimum bias of the indication for the operation, we wanted to compare the outcome of second twins delivered by caesarean due to breech presentation of the sibling with vaginally delivered second twins in uncomplicated pregnancies.

Standardized measurement of self-rated breathlessness using appropriate tools is essential for research and clinical care. The purpose was to review recent advances in the measurement of breathlessness and the minimal clinically important differences (MCIDs) in intensity of chronic breathlessness.

PKCepsilon (protein kinase Cepsilon) is a serine/threonine kinase, and a member of the PKC family of isoforms. The different PKC isoforms regulate many cellular processes of importance for disease. It is therefore desirable to obtain tools to specifically modulate the activity of the individual isoforms and to develop markers of PKC activity. The paper by Durgan et al. in this issue of the Biochem

Abstract Objectives. To establish a set of reference values for regional dispersion of repolarization of the right atrium in the in situ heart of pigs and to see if the global dispersion of repolarization could be estimated from regional mapping. Design. Monophasic action potential (MAP) were sequentially recorded from 28 ± 3 sites in seven different regional areas of the right atrium: lateral, a

Vår tid är urbanitetens epok. Människor vill komma till staden. Utflyttningen från landsbygd till stad tycks vara en social omvandlingsprocess utan ände. I dagens Sverige bor 84 procent av befolkningen i städer. På tvåhundra år har förhållandet mellan stad och landsbygd nästan vänts i sin motsats. Någon gång under 1930-talets början passerade antalet stadsboende landsbygdens befolkning. Det som hä

While Aristotle has conventionally been perceived as a precursor for the taxonomy of modern biological systematics, such as that of Carolus Linnaeus, this essay investigates the relationship between Aristotelian metaphysics and natural history in order to demonstrate the problem of anomalies in any system of this kind. In particular, the problem involves the place that may be given to the unnatura