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The enhancement of heat transfer in the tail pipe of a pulse combustor

For pulse combustors of the Helmholtz type, a heat transfer of the order two to five times higher than expected has been reported. Experiments, where the temperature profile in the tail pipe of a pulse combustor has been measured, give Ilo indication why the heat transfer should be enhanced. The interaction between the oscillating velocity field and the oscillating temperature field might explain

Hans kropp – samhället självt: Manliga svenska mordspanare på ålderns höst

Diskussion av maskulinitet och mannen som represenation av nationen och dess tillstånd utifrån svenska polisromaner och polisfilmer, bland andra Per Wahlöös romaner om kommissarie Jensen (Mord på 31:a våningen, 1964; Stålsprånget, 1968, Sjöwall-Wahlöös Roman om ett brott-serie och Henning Mankells Wallanderromaner samt romanfilmatiseringarna och de fristående filmserierna Beck och Wallander.

Description of Telia's OFDM-based proposal

This document give an overview of Telias OFDM based proposal for UTRA and should be considered as an input to the OFDM concept group within SMG 2. The document describe the fundamental frame structure, principles of the detection, modulation, coding and synchronisation. Further on the channel structure, the resource management and handover principles are outlined.

Nutrient Limitation of Bacterial Growth in Soil

Lack of carbon has been assumed to be the most common limiting factor for bacterial growth in soil, although there are reports of limitation by nitrogen and phosphorus. I have studied nutrient limitation of bacterial growth in soil using a novel technique, where thymidine or leucine incorporation is used to detect changes in growth rates after adding nutrients. I have studied which nutrient(s) li

Performance Evaluation of a High Solar Fraction CPC-Collector System

One of the most important goals on solar collector development is to increase the system’s annual performance without increasing overproduction. The studied collector is formed by a compound parabolic reflector which decreases the collector optical efficiency during the summer period. Hence, it is possible to increase the collector area and thus, the annual solar fraction, without increasing the o