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We investigate the effects of adaptive time-stepping and other algorithmic strategies on the computational stability of ODE codes. We show that carefully designed adaptive algorithms have a most significant impact on computational stability and reliability. A series of computational experiments with the standard implementation of Dassl and a modified version, including stepsize control based on di
Popular Abstract in Swedish Arbetet i denna avhandling syftar till att utveckla bättre ljuskällor för fluorescensavbildning och fotodynamisk behandling av cancertumörer. Små kompakta diodlasrar är ideala ljuskällor för detta, men en del kliniska användningar kräver att deras prestanda förbättras. Gemensamt för de bägge diagnostik- och behandlingsmetoderna är att man behöver uppnå högre strålkvalitThis work concerns techniques for improvement of the coherence properties of diode lasers so that they may be used in two specific medical applications: (Interstitial) photodynamic therapy (PDT) and laser-induced fluorescence diagnostics. In the first application, spatial coherence is crucial, since the treatment light should be delivered through relatively thin optical fibers to optimize treatmen
Popular Abstract in Swedish Denna avhandling undersöker den operativa kärnan i räddningsinsatser. Vidare undersöker den effekten av olika åtgärder som används vid räddningsinsatser mot brand i byggnad, effekten av sådana åtgärder till följd av beslut som fattas av befäl samt effekten av att allokera resurser i tiden och rummet vid en räddningsinsats mot brand i byggnad. Avhandlingen drar slutsatseThe operational core of firefighting operations was examined. The effects of various firefighting procedures on the fire ground, their impact upon conditions on the fire ground in which decisions by commanding officers are made and the effects of allocating resources in time and space on the fire ground were explored. In addition, various approaches for modelling firefighting operations were discu
Background/aims: Mutans streptococci are found in almost all individuals, though there are large differences in colonization levels between individuals. These differences are not readily explained, though several factors are believed to influence the colonization. One factor is the immune response to mutans streptococci, mainly provided by salivary immunoglobulin A (IgA). In a previous study, diff
Background and aims: The primary aim of the present study was to examine whether there is an association between blood pressure and the risk of subsequent cognitive decline in the oldest old. Various factors associated with blood pressure and cognitive function were considered. Methods: The study comprised 599 individuals of a population-based sample, 199 men (mean age at baseline 82.8 years, rang
This paper presents a strategy for closed-loop control of a multi-cylinder turbocharged Homogeneous Charge Compression Ignition (HCCI) engine. A dual fuel port injection system allows control of combustion timing and load individually for each cylinder. The two fuels used are isooctane and n-heptane, which provides a wide range of autoignition properties. Cylinder pressure sensors provide feedbac
This article intends to present the Scandinavian legislation on female genital mutilation and explore the implications of the laws. Juxtaposing trends of plastic genital surgery in the West with claims that female circumcision may be a practice generally abandoned in Scandinavia, we highlight the double morality inherent in current public discussions. Finally, we pose the question: Is the legal pr
We present the red-listed plants and fungi that have been found in the central parts of the parish of Stenbrohult, southern Sweden. In the middle of the study areas Carl Linnaeus was born in 1707, and he spent his summers there until 1727. Of the 11 currently red-listed vascular plants (Gärdenfors 2000) that have been recorded since 1970 all occurred there also 300 years ago. Mosses, lichens and f
On St. Bridget's confessor and the editor-in-chief of her works
The main aim of this study was to validate a new technique, neural response telemetry (NRT), for measuring the electrically evoked compound action potential in adult cochlear implant users via their Nucleus CI24M implant. Thirty-eight adults were evaluated with a variety of measurement procedures with the NRT software. Electrically evoked compound action potentials were obtained in 31 of the 38 ad
Nine polypeptides of gastrointestinal origin were tested for their possible effect on vascular smooth muscle of the rat portal vein. The substances tested were bombesin, caerulein, glucagon, insulin, pentagastrin, secretin, somatostatin, substance P and vasoactive intestinal polypeptide (VIP). Cumulative dose-response relations of integrated mechanical activity (mean tension) were obtained with ma
Abstract is not available
A method for the in situ modification of hollow fiber membranes used as sampling units for microdialysis probes is presented. The method consists of adsorption-coating, high-molecular-weight poly(ethylene imine), PEI, onto membranes, already fitted on microdialysis probes. Modification of membranes was designed to specifically explore the so-called Andrade effects and thus enhance the interaction
Rapporten är utformad som en handbok för hjälp vid dimensionering och utformning av fogar i byggnaders ytterväggar. Boken innehåller en grundläggande problembeskrivning, genomgång av påverkande faktorer, materiallära, dimensionerings- och utformningsanvisningar samt tillämpningsexempel på lämpliga fogutformningar.
In this article the concept of trade or retail bindings with regard to the Swedish book market during the 18th and early 19th century is introduced and discussed. Binding techniques and materials as well as the cost of different kinds of Swedish trade bindings are shown. Special attention is given to the large production of almanacs, hymnbooks and ABC books destined for the peasantry. Complaints a
