Filtyp
The topic of this thesis is the electro-mechanical oscillations which to some extent always are present in a power system. The demand of electric power is ever increasing. At the same time, the tolerance of disruptions in the power supply is decreasing. The deregulated market together with distributed generation have then pushed the system to operate during circumstances for which it was not desig
In this thesis aspects of peripheral B lymphocyte differentiation were studied. Through in vitro experiments, B lymphocyte activation was assessed. B lymphocytes express immunoglobulin (Ig) specific for a certain antigen on the cell surface, and when surface Ig is crosslinked by an antigen, the cell is activated. Antigens giving rise to a T cell dependent immune response are internalized by the B
This dissertation deals with discrimination of part-time and fixed-term workers. The EU directives on part-time and fixed-term work, as well as Swedish law in the same area, are the starting point of the analysis. The aim is to offer a reading of discrimination law as an instrument for freedom from subordination. Inspiration is found in critical legal positivism’s idea of the autonomous individual
This thesis consists of four self-contained, yet related articles which all contribute mainly to the corporate governance literature. Very broadly, the first two papers are on family firms and large shareholders in Sweden while the second two are on Enterprise Risk Management (ERM) practices in Nordic countries. The contribution of Paper 1 is that I for the first time take into account the two dim
För drygt tio år sedan startades det s.k. mellanstadieprojektet – numera ”femteklassprojektet". Det hela går ut på att teknologer besöker mellanstadieklasser, i första hand femteklasser. Besöket inleds med ett antal spännande demonstrationsförsök ("teknik-, kemi- och fysikshow"). Teknologerna berättar om sig själva, om vad man gör på den tekniska högskolan och vad LTH är för någonting. Ett viktigt
The intestinal flora and the bacteria found in the extraintestinal sites were studied in liver injury rats, with or without Lactobacillus plantarum 299v pre-treatment. The dominating intestinal flora and translocating bacteria were typed by RAPD and identified by 16S rDNA sequencing. It was proved that bacterial strains from the intestine could pass through the intestinal barrier to the extraintes
Trummor där trumkroppen är tillverkad av keramik är kända från etnografiska sammanhang bl a från Afrika. Flera av dessa trummor har använts vid speciella ceremonier från exempelvis Lesotho finns en trumma som sägs användas vid flickornas initierings riter och i Benin används en typ av trumma vid begravning. Från Europeisk förhistoria finns tämligen säkra fynd av keramiktrummor från Yngre Stenålder
Popular Abstract in Swedish Friction Stir Welding eller ”friktionsomrörningssvetsning” är en svetsprocess som kräver ett roterande verktyg som genom friktionsvärme får materialet att mjukna. Verktyget blandar runt det plastiska materialet mekaniskt och skapar en fog av hög kvalité. Processen fungerar utan gas, utan rök, utan tillsatsmaterial och utan att smälta materialet. Alla dessa fördelar skapFriction Stir Welding (FSW) is a modern welding process that joins materials by frictional heat, generated by a rotating tool. Unlike other welding processes, the material never melts, which is beneficial for the weld properties. FSW is already widely adopted in several industries but the applications are limited to simple geometries like straight lines or circular welds, mostly in aluminium. The
Abstract is not available
