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CFD Approach to Analyze Transport Phenomena Coupled Chemical Reactions Relevant for Methane Reformers

Various transport phenomena in conjunction with chemical reactions are strongly affected by reformer configurations and properties of involved porous catalyst layers. The considered composite duct is relevant for a methane steam reformer and consists of a porous layer for the catalytic chemical reactions, the fuel gas flow duct and solid plate. In this paper, a fully three-dimensional calculation

Control and Embedded Computing: Survey of Research Directions

This paper provides a survey of the role of feedback control in embedded realtimesystems, presented in the context of a new EU/IST Network of Excellence, ARTIST2.The survey highlights recent research efforts and future research directions in the areasof codesign of computer-based control systems, implementation-aware embedded controlsystems, and control of real-time computing systems.

Notes on the systematics, chemistry and distribution of European Parmelia and Punctelia species (lichenized ascomycetes).

Some European species of the genera Parmelia and Punctelia are analysed using molecular, morphological and chemical characters and notes on their distribution are presented. ITS sequences were compared from a total of 31 representative specimens. Parmelia ernstiae and P. serrana form a sister group to P. pinnatifida and P. saxatilis, whereas P. discordans and P. omphalodes are closely related and

Local Success, Global Failure: Challenges Facing the Recovery Operations of Critical Infrastructure Breakdowns

Many of society’s critical infrastructures, such as power supply, telecommunications, and transportation, have become increasingly interconnected. While this gives rise to increased efficiency, tighter connections also invites increased vulnerability and the risks of cascading failures. Moreover, at the same time as many of these vital systems have become increasingly dependent on one another, the

Extraterrestrial chromite in the resurge deposits of the early Late Ordovician Lockne crater, central Sweden

The distribution of extraterrestrial chromite grains (> 63 mu m) has been studied in the resurge deposit of the early Late Ordovician (458 Ma) Lockne impact structure in central Sweden. A 1-kg-sample of resurge sediment from the rim of the crater is extremely rich in extraterrestrial chromite. In total the sample contains > 125 chromium spinel grains kg(-1), most grains being chromite. Due to post

Improving Stress Tolerance in Industrial Saccharomyces cerevisiae Strains for Ethanol Production from Lignocellulosic Biomass

Popular Abstract in English Oil resources are finite; and political and economic factors affecting oil production,together with the environmental damage associated with the increased use of oil by a rapidly growing population, have underscored the need for developing cleaner technologies based on sustainable resources. In this context, any lignocellulosic biomass that is not used in the food chainThe present work was aimed at developing industrial S. cerevisiae strains with improved tolerance to two types of stressors encountered during the fermentation of lignocellulosic biomass that affect ethanol yield and productivity, namely hydrolysate-derived inhibitors and high temperature, and at understanding the response of yeast and mechanisms of adaptation to such stressors. In one part of the

Antibody Evolution and Repertoire Development

Popular Abstract in Swedish Antikroppar är viktiga beståndsdelar av det naturliga immunförsvaret som skyddar oss mot smittämnen, såsom bakterier och virus. Utvecklingen av olika genetiska och biokemiska teknologier har dessutom möjliggjort användningen av antikroppar för en mängd ändmål, bl a för diagnostik och behandling av infektionssjukdomar och cancer. I denna avhandling, som bygger på fem vetAntibodies are key players of the immune system in higher vertebrates, which provide a defense against potentially lethal threats from the environment. Besides their importance in the immune defense, antibodies have a great potential as reagents in biological chemistry and diagnostics, and as therapeutic agents against both infectious diseases and cancer. Despite tremendous advances in all fields

Johannes Klimakos, ur Den gudomliga Stegen

Swedish translation of steps 8, 13 and 14 of The Ladder of Divine Ascent by John Climacus. The translation is based upon Rader's edition reprinted in Migne's Patrologia Graeca, vol.88 (Paris, 1633).