We report the results of an intercomparison of vertical column amounts of HCl, HF, N(2)O, HNO(3), CH(4), O(3), CO(2) and N(2) derived from the spectra recorded by two ground-based FTIR spectrometers operated side-by-side using the sun as a source. The procedures used to record spectra and derive vertical column amounts followed the format of previous instrument intercomparisons organised by the Ne

This thesis deals with the task of modeling a web server and designing a mechanism that can prevent the web server from being overloaded. Four papers are presented. The first paper gives an M/G/1/K processor sharing model of a single web server. The model is validated against measurements ands imulations on the commonly usedw eb server Apache. A description is given on how to calculate the necessar

This report deals with stability and validity analyses of direct tension tests, and an investigation into structural behaviour of various materials in tensile fracture. The influence of rotation in damage zone on the stress-deformation curve is investigated. The role of rotation stiffness of testing set-ups for a stable tension test is analysed. The bump effect, i.e. steep stress drops in stress-d

Popular Abstract in Swedish Syftet med denna avhandling är att analysera och förklara den institutionella förändringen vad gäller läkemedelsförsäljning i Sverige. Avhandlingens bidrag är studier av denna specifika institutionella utveckling där nyinstitutionell ekonomisk teori har använts för att undersöka drivkrafterna. Avhandlingen består av tre artiklar. Syftet med den första artikeln är att beThe aim of this thesis is to analyze and to explain the institutional change in the provision of pharmaceuticals in Sweden. The thesis’ contribution is studies of this specific institutional development. New Institutional Economic theory is used to scrutinize the driving forces of this development. The thesis consist of three papers. The purpose of the first paper is to discuss and to analyze the

Four exposures of Chicxulub impact ejecta along the Mexico-Belize border have been sampled and analyzed for major and trace element abundances. The ejecta deposits consist of a lower spheroid bed, containing clay and dolomite spheroids, and an upper diamictite bed with boulders and clasts of limestone and dolomite. The matrix of both beds is composed of clay and micritic dolomite. The rare earth

Near infrared (NIR) transmission spectroscopy is a promising method for fast quantitative measurements on pharmaceutical tablets, but there are still some problems to overcome in order to incorporate the technique as a control tool in tablet production. The main problem is the limited precision for multivariate calibrations based on NIR transmission data. The precision is affected by several facto

An investigation of the spray drying process is made in great detail regarding particle formation and capture efficiency with focus on the production of inhalable particles. Mannitol was spray dried as model substance and the spray-dried products were characterized. The resulting products consisted of smooth spheres with a volume median diameter of 2.2-5.5 mum, and narrow size distributions. The i

In NMR diffusometry, one often uses the short gradient pulse (SGP) limit approximation in the interpretation of data from systems with restricted diffusion. The SGP limit approximation means that the gradient pulse length, delta, is so short that the spins do not diffuse during the pulse duration, but this condition is rarely met. If the length scale of the pores corresponds to the molecular mean

We propose a simple modification of the famous Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm for linear block codes. The modified algorithm requires one forward and two backward recursions in the code trellis, but eliminates the need to store the whole trellis. Compared with the BCJR algorithm, the computational complexity is slightly increased, but the storage requirement is reduced.

A method is described in which light gradients and spectral regime can be measured within plant tissue using fiber optics. A fiber optic probe was made by modifying a single optical fiber (200 μm diameter) so that it had a light harvesting end that was a truncated tip 20–70 μm in diameter. The probe was a directional sensor with a half-band acceptance angle of 17–20°. Light measurements were made

A reply to Thomas Roth, on the interpretation of photographs as historical sources.

Abstract not available

Introduction: Physical inactivity, low aerobic fitness and obesity are all associated with an increased risk of a wide range of diseases in adults. Promotion of physical activity, improvement of aerobic fitness and regulation of body weight in children may be of importance, as low physical activity, low aerobic fitness and obesity early in life have been known to track into adulthood. However, rel