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Determination of the QCD coupling from ALEPH τ decay data
We present a comprehensive study of the determination of the strong coupling from τ decay, using the most recent release of the experimental ALEPH data. We critically review all theoretical strategies used in previous works and put forward various novel approaches which allow one to study complementary aspects of the problem. We investigate the advantages and disadvantages of the different methods
Towards a holistic prioritization of climate-change risks for bridges
Although the projected changes in the climate include considerable uncertainties, especially with downscaling, there is irrefutable evidence that the climate is changing at an unprecedented and alarming rate. In recent studies, some of the potential climate-change risks on bridges have been identified. The sheer number of these potential risks provokes two questions. Firstly, for a certain risk of
The strong coupling from ALEPH tau decays
The strong coupling from ALEPH tau decays. We use the publically available non-strange spectral function from ALEPH tau decays to critically analyze the different determinations of αs(mτ2) that can be found in the literature and the numerical impact of their possible weaknesses. We also introduce some novel approaches. We find that perturbative uncertainties dominate. Our results with different ap
"som een privat och eenshylt saak anklanger" : The concept of "privat" in Swedish parliamentary records, ca 1521-1800
The early modern era sees critical changes in the relations between individual and society, home and community, self and other. The notion of privacy, both as a potential threat against communal welfare and stability, and as something worthy of protection, is gradually emerging and can be traced in politics, religious practices, ideas on family and personal relations, as well as in architecture an
Updated determination of αs(mτ 2) from τ decays
Using the most recent release of the ALEPH τ decay data, we present a very detailed phenomenological update of the αs(mτ 2) determination. We have exploited the sensitivity to the strong coupling in many different ways, exploring several complementary methodologies. All determinations turn out to be in excellent agreement, allowing us to extract a very reliable value of the strong coupling. We fin
Symmetry of anomalous dimension matrices explained
In a previous paper, one of us pointed out that the anomalous dimension matrices for all physical processes that have been calculated to date are complex symmetric, if stated in an orthonormal basis. In this paper we prove this fact and show that it is only true in a subset of all possible orthonormal bases, but that this subset is the natural one to use for physical calculations.
ChPT parameters from τ-decay data
Using the updated ALEPH V-. A spectral function from τ decays, we determine the lowest spectral moments of the left-right correlator and extract dynamical information on order parameters of the QCD chiral symmetry breaking. Uncertainties associated with violations of quark-hadron duality are estimated from the data, imposing all known short-distance constraints on a resonance-based parametrization
Urbant utanförskap i senmodern tappning : Hassan Loo Sattarvandis roman om Hagalund
High temperature applications of spiral wound modules for UF and NF
The most common modules for ultrafiltration (UF) and nanofiltration (NF) are spiral wound elements due to their low investment, easy replacement and high packing density. Operating at high temperatures greater than 70°C, the use of spiral wound modules is, however, often limited. In the past ceramic membranes have been considered as the only viable option to operate at these temperatures. However,
Mediernas drev mot det svenska folkhemmet
Varje granskning måste vara saklig
Parton cascade models and QCD coherence at HERA
The hadronic final state in deep-inelastic ep scattering at HERA is influenced by colour coherence effects in QCD. Three different models for initial- and final-state multi-parton emission and soft hadronization, as implemented in the Monte Carlo programs LEPTO, ARIADNE and HERWIG, are compared in this respect both at the parton and hadron level (with experimental conditions taken into account).
Implications of tau data for CP violation in K decays
Cardiac Remodeling in Aortic and Mitral Valve Disease - a Simulation Study with Clinical Validation
BACKGROUND: Remodeling is an important long-term determinant of cardiac function throughout the progression of heart disease. Numerous biomolecular pathways for mechanosensing and transduction are involved. However, we hypothesize that biomechanical factors alone can explain changes in myocardial volume and chamber size in valve disease.METHODS: A validated model of the human vasculature and the f
Amfetamin till folket
Membrane spacers for ultrafiltration: Modelling of mass transfer and pressure
Membrane spacers are an essential part of spiral wound modules and can significantly influence the mass transfer performance and pressure drop in the modules. To develop further understanding of the importance of spacer selection, the performance of two configurations of parallel spacers for ultrafiltration using Dextan T40 was analysed in this study using lab-scale experiments and CFD simulations
Hur mörk var folkhemmets baksida? Steriliseringar, amfetaminexperiment och sockerförsök.
När samhället träder in : Barn, föräldrar och social barnavård
Agreement of left ventricular mass in steady state free precession and delayed enhancement MR images : Implications for quantification of fibrosis in congenital and ischemic heart disease
Background: Left ventricular mass (LVM) is used when expressing infarct or fibrosis as a percentage of the left ventricle (LV). Quantification of LVM is interchangeably carried out in cine steady state free precession (SSFP) and delayed enhancement (DE) magnetic resonance imaging (MRI). However, these techniques may yield different LVM. Therefore, the aim of the study was to compare LVM determined