We present an efficient photon-echo experiment based on atomic frequency combs [Phys. Rev. A 79 (2009) 052329]. Echoes containing an energy of up to 35% of that of the input pulse are observed in a Pr3+ -doped Y2SiO5 crystal. This material allows for the precise spectral holeburning needed to make a sharp and highly absorbing comb structure. We compare our results with a simple theoretical model w

Peatlands are significant sources of the important greenhouse gas CH4 and generally known as sinks for atmospheric CO2 through peat accumulation. Accurate measurements of the subsurface concentrations of these gases are of pivotal importance for experimental studies improving our understanding of the dynamics and controls on the exchanges of these gases between peat soils and the atmosphere. In th

Abstract in Danish I maj måned 1223 blev Valdemar 2. Sejr under en jagttur på Lyø taget til fange af sin egen vassal, graven af Schwerin. Begivenheden er siden af danske middelalderhistorikere blevet betegnet som en af de mest katastrofale hændelser i dansk historie, da det var begyndelsen til, at det danske storrige i Østersøregionen brød sammen.Denne artikel undersøger den følelsesmæssige respon

Accidental falls in the elderly are a major health problem, despite extensive research on risk factors and prevention. Only a limited number of multifactorial, long-term prospective studies have been performed on risk factors for falls in the general elderly population. The aim of this study was to identify risk factors predicting falls in a general elderly population after three and six years, us

Background: Research suggests that the growing prevalence of obesity may be related to the influence of the health behaviours of peers. We look at clustering of exercise and eating behaviours amongst a previously unstudied group, young adults in Sweden. Previous research has mainly been conducted in the United States and Britain, countries that have relatively high rates of obesity. Methods: Using

Study of the Swedish reception of Ingmar Bergman's film Shame in 1968.

This paper takes as its starting‑point three particular moments in The Winter’s Tale (Exit pursued by a bear (3.1), Time (4.1) and the Statue scene (5.3) – moments that have become famous, or infamous, even mythical, by being so difficult to stage1. Having worked intensively with The Winter’s Tale throughout the academic year 2012/13 (among other things directing it with two consecutive groups of

Recent results indicate that the J/ψ suppression pattern differs with rapidity showing a larger suppression at forward rapidity. J/ψ suppression mechanisms based on energy density (such as color screening, interaction with co-movers, etc) predict the opposite trend. However, it is expected that more pairs should be available to form quarkonia at mid-rapidity via recombination. Some models provide

Background: The t(6;9)(p23;q34) chromosomal translocation is found in 1% of acute myeloid leukemia and encodes the fusion protein DEK-NUP214 (formerly DEK-CAN) with largely uncharacterized functions. Methods: We expressed DEK-NUP214 in the myeloid cell lines U937 and PL-21 and studied the effects on cellular functions. Results: In this study, we demonstrate that expression of DEK-NUP214 increases

This paper aims to highlight the changing and diversifying nature of academic work related to various forms of knowledge production and diffusion. Focusing on the changing research policy landscape in Sweden, three interrelated questions are investigated: what academics do in terms of commercialisation and public dissemination; how they perform these activities; and why they engage in these activi

Previously found oxidized III-V semiconductor surfaces have been generally structurally disordered and useless for applications. We disclose a family of well-ordered oxidized InAs, InGaAs, InP, and InSb surfaces found by experiments. The found epitaxial oxide-III-V interface is insulating and free of defects related to the harmful Fermi-level pinning, which opens up new possibilities to develop lo

Laser extinction, signal attenuation and multiple scattering are the three main phenomena limiting qualitative and quantitative measurements in planar laser imaging of sprays. In this paper, a method is presented where structured laser illumination planar imaging is used to remove the signal contribution from multiply scattered light. Based on this technique, data from side scattering and transmis

Sepsis is a serious condition characterized by a systemic inflammatory response to an infection. Increased vascular leakage, vasodilation and heart failure cause circulatory disturbances challenging the intensivist. Despite modern medication and high technology supportive care, mortality is high. Key strategies include to find and take care of causative agents at the infection site. Unfortunately,

The recent increase in R&D offshoring has raised fears that knowledge and competitiveness in advanced countries may be at risk of 'hollowing out'. At the same time, economic research has stressed that this process is also likely to allow some reverse technology transfer and foster growth at home. This paper addresses this issue by investigating the extent to which R&D offshoring is associa

The Middle Ordovician (466 Ma) Osmussaar breccia, situated along the northwestern coast of Estonia, is rich in angular chromite grains of extraterrestrial origin (>13 grains kg(-1)) and shocked quartz. The angularity of the chromite grains implies that they have not been transported or reworked to any large extent, connoting that the brecciation is the result of a contemporary impactor, either as

We set up a tasting venue at a local supermarket and invited passerby shoppers to sample two different varieties of jam and tea, and to decide which alternative in each pair they preferred the most. Immediately after the participants had made their choice, we asked them to again sample the chosen alternative, and to verbally explain why they chose the way they did. At this point we secretly switch

Lubricants are used in numerous applications in our society, for instance, as hydraulic fluids. When used in forestry, 60-80% of these hydraulic fluids are released into the environment. This is one of the reasons for the growing interest for developing and utilising hydraulic fluids with good environmental performance. Another driving force in the development of hydraulic fluids is to replace fos