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Orthostatic hypotension in organic dementia: relationship between blood pressure, cortical blood flow and symptoms

Regional cerebral blood flow was measured in 35 patients with organic dementia (Alzheimer's disease, n = 13, vascular dementia, n = 17, frontotemporal dementia, n = 5) and orthostatic hypotension. Measurements were performed during supine rest and during head-up tilt (60 degrees). Despite marked blood pressure falls, few patients had symptoms of orthostatic hypotension. All three dementia groups h

Nanoindentation characterization of high chromium white cast iron for assessment of machining performance

As modern production moves towards higher efficiency and cost effectiveness, machining difficult-to-cut materials becomes an increasing challenge. Quickly and reliably characterizing the properties of materials could significantly improve the performance of machining processes in terms of their efficiency and production cost. This dissertation deals with the methodology for characterizing the micr

The MAX IV Synchrotron Light Source

The MAX IV synchrotron radiation facility is currently being constructed in Lund, Sweden. It consists of a 3 GeV linac injector and 2 storage rings operated at 1.5 and 3 GeV respectively. The linac injector will also be used for the generation of short X-ray pulses. The three machines mentioned above are described with some emphasis on the effort to create a very small emittance in the 3 GeV ring.

Migration strategies of raptors – spatio-temporal adaptations and constraints in travelling and foraging

Popular Abstract in Swedish Min avhandling handlar om flyttning, det vill säga hur levande organismer rör sig mellan olika områden för att utnyttja resurser, undvika födobrist och som en anpassning till klimat- och miljöfaktorer. Vi begränsar det hela till fåglar's flyttning och bland dem ska vi koncentrera os's på rovfåglar. Rovfåglar är beroende av sina bytesdjur, som till exempel kan vara andraMy dissertation is about bird migration and addresses questions about how raptors adapt to the fluctuating environments during the transition seasons between breeding and wintering. The migration is highly affected by local prey abundance, foraging strategies, weather conditions and landscape patterns along the migration routes as well as navigation and orientation mechanisms and cues. Interesting