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This study presents a state-of-the-art overview on heat transfer characteristics of fluids (mainly water, carbon dioxide and hydrocarbon fuels) flowing in smooth tubes and enhanced tubes at supercritical pressures and tries to obtain a fundamental understanding of the unique characteristics. Heat transfer in enhanced tubes is much better than that in smooth tubes with a larger pressure drop penalt
Aim: This study investigated the relationship between sexual debut before 14 years of age and socio-demographics, sexual experience, health, experience of child abuse and behaviour at 18 years of age. Methods: A sample of 3432 Swedish high school seniors completed a survey about sexuality, health and abuse at the age of 18. Results: Early debut was positively correlated with risky behaviours, such
Wild bank voles (Clethrionomys glareolus) may develop diabetes in laboratory captivity. The aim of this study was to test whether bank voles develop type 1 diabetes in association with Ljungan virus. Two groups of bank voles were analyzed for diabetes, pancreas histology, autoantibodies to glutamic acid decarboxylase (GAD65), IA-2, and insulin by standardized radioligand-binding assays as well as
Popular Abstract in Swedish Denna avhandling handlar om utveckling och tillämpning av metoder för jonstråleanalys av lätta ämnen (lättare än ungefär aluminium), framförallt vid en nukleär mikrosond. Vid en nukleär mikrosond accelereras tunga partiklar, t.ex. protoner, av en partikelaccelerator och fokuseras av ett speciellt magnetiskt linssystem ned till en storlek av ungefär 1 mikrometer. Denna sThis thesis treats the development of Ion Beam Analysis (IBA) methods, principally for the analysis of light elements at a nuclear microprobe (NMP). The light elements are in this context defined as those with an atomic number Z of less than approximately 13 (aluminium). The work reported is to a large extent based upon multiparameter methods. Several signals are acquired simultaneously, and the d
Climate change is already impacting species around the world. Although most focus has been on the effect of temperature, changes in climatic variables other than temperature are also expected to drive biological change. Current models suggest that ectotherms, such as reptiles, will be strongly affected by climate change; however, data from natural populations are rare. Here, we use extensive data
The objectives of Food4Me work package 5 included a baseline assessment of the ethical and legal aspects of personalised nutrition at the start of the project in 2011, as well as a final assessment at the end of the project (2015), taking into account results achieved in other work packages. The initial assessment made a number of ethical issues visible, most of them relating to the consumer of pe
Load management is a techno-economic measure for harmonizing the relations between supply and demand sides, optimising power generation and transmission and increasing security of supply. It can also benefit the environment by preventing use of generators with higher emissions. This study was performed in collaboration with one electric utility in Southern Sweden, which aims solving peak load pro
To obtain knowledge about combustion mechanisms operating in the ammoxidation of toluene, the formation of carbon oxides was studied over a Ti02(B)-supported vanadium oxide catalyst with monolayer loading. The partial pressures of reactants were varied and kinetic rate expressions, completely describing experimental data, were derived. A comparison of the expressions obtained with those for the fo
Popular Abstract in Swedish Amerikanska krigare i Vietnam: Krigarvärderingar och myten om krigserfarenheten under Vietnamkriget, 1965-1973.In the Western world there has been a general consensus that in the aftermath of Auschwitz and Hiroshima, romanticized masculine images of war and soldiering have reached a turning point. This book challenges the view that the post- 1945 era has to a great extent been without romantizations of warriorhood. In the thesis I show that the American combat soldiers in Vietnam were not beyond the influe
This paper presents numerical and experimental studies on the onset and evolution of laminar cellular flames of CH4/O-2/CO2 (oxy-fuel) and CH4/air mixtures under adiabatic conditions, stabilized in the proximity of a flat-flame burner at atmospheric pressure. In the numerical simulations, a two-dimensional domain with periodicity at the transverse far field boundaries is resolved using a high accu
Background: Clinical subtypes of mild cognitive impairment (MCI) may represent different underlying aetiologies. Methods: This European, multicentre, memory clinic based study (DESCRIPA) of non-demented subjects investigated whether MCI subtypes have different brain correlates on MRI and whether the relation between subtypes and brain pathology is modified by age. Using visual rating scales, media
Holmqvist ME, Wedren S, Jacobsson LTH, Klareskog L, Nyberg F, Rantapaa-Dahlqvist S, Alfredsson L, Askling J (Institute of Environmental Medicine, Karolinska Institutet, Stockholm; Karolinska Institutet/Karolinska Hospital, Stockholm; Malmo University Hospital, Malmo; AstraZeneca R&D, Molndal; and Umea University Hospital, Umea, Sweden) Rapid increase in myocardial infarction risk following dia
