The most common form of technology for energy utilization via anaerobic treatment is slurry digestion with a low solids contents, such as sewage sludge or manure. Process control and maintenance are relatively simple, but costs involved with liquid handling and heating favour large, centralised plants. Raising the solids content of a digester to 30% significantly improves the economy of anaerobic

Thin-section analysis of votive terracottas from the Etruscan sites Tessennano, Vulci, Tuscania and Tarquinia were made in order to help explaining the manufacturing process of votiv terracottas, with a focus on coice of raw material (clay and temper). The investigation of the material from these four sites has offered an opportunity to study Etruscan handicraft. The study has shown that e.g. that

Fuel cells are expected to play a significant role in the next generation of energy systems and road vehicles for transportation. However, substantial progress is required in reducing manufacturing costs and improving performance. This book aims to contribute to the understanding of the transport processes in solid oxide fuel cells (SOFC), proton exchange membrane fuel cells (PEMFC) and direct me

In the 1990s, Japanese energy regulators were concerned by the fact that new generations of energy using appliances and products no longer displayed successive use-phase energy efficiency improvements, such as those that characterised product development in Japan after the 1970s oil crises. Therefore, in 1999, Japan incepted its Top Runner programme, designed to rejuvenate the lost momentum. Sever

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We investigate the ability of fluidic injection to control the noise of a model gas-turbine nozzle exhaust. The work is conducted using a hybrid method of LES for the flow field and Lighthill's acoustic analogy for the acoustic field. The impact of injection on the flow development in terms of coherent structures and characteristic frequencies is evaluated. The main results show that a low momentu

Restriction Endonuclease Analysis (REA) was used to characterize strains of Lactobacillus plantarum, Lb. pentosus, and Lb. reuteri. This method was shown to be a powerful tool for separation at the species and strain level. RAPD analysis of raw cell abstracts was used to characterize strains of Lb. plantarum. This method was shown to be useful for separation of most strains, and the results were o

Study of the role of trains, telephones and other aspects of modernity in the early films of Ingmar Bergman.

In the discipline of archaeology death has always been a common subject. Graves and dead bodies in different states of decay are important sources of information. This dissertation investigates how our relation to death can be mirrored through some of the better-known individuals from prehistory in Scandinavia. Because of the character of the question at issue I start with three chapters in which

Abstract Recent years have seen a number of competing theories of concepts within philosophy of mind, supplanting the classical definitionist and imagist accounts: among them, Jerry Fodor's informational atomism, Jesse Prinz's proxytypes theory, and -- of course -- Peter Gärdenfors' (2004) conceptual spaces theory (CST). On the whole there has been little empirical investigation into the competing

Sweden, like most other industrialized countries, has an aging population. This is caused by decreases in fertility as well as increases in life expectancy. Table 6.1 shows the percentage of the population over sixty-five and eighty-years-old.