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Fault Behavior of Wind Turbines

Popular Abstract in Swedish Andelen vindkraft i elnätet har ständigt ökat under de senaste åren. I många länder utgör idag vindkraften en betydande del av den totala elproduktionen. Detta gäller även vid störningar då vindkraftverk – precis som vattenkraftverk och kärnkraftverk – måste fortsätta bidra till balansen mellan elproduktion och förbrukning. De nya reglerna för anslutning av vindkraft tiSynchronous generators have always been the dominant generation type in the grid. This fact affected both planning and operation of power systems. With the fast increase of wind power share in the grid in the last decade, the situation is changing. In some countries wind power represents already a consistent amount of the total generation. Wind turbines can be classified as non-synchronous generat

The importance of local context in the planning of environmental projects: examples from two biogas cases

The planning of facilities to improve the environment is often carried through in the form of locally based construction projects. These projects can be complex, involving a variety of issues and a number of different actors from both the public and private sectors. By drawing on previous research on project planning, an analytical model for analysing the issues connected with the planning and imp

Distributed resource management using iterative gradient update synthesis

We consider load balancing on a network. Servers of limited bandwidth move a single commodity through a network of buffers (or queues) while external random processes generate and consume this commodity. Our contribution is a distributed algorithm for regulating the backlogs of these queues to a given reference while balancing the mean flow in the network. We formulate this as a fluid buffer regu

The CD40 Receptor - Target,Tool and Technology

Popular Abstract in Swedish Vårt immunförsvar arbetar konstant med att skydda kroppen från olika föremål, t. ex. bakterier, virus, gifter och cancertumörer, som kan orsaka skada eller sjukdom. För att kunna försvara kroppen mot sådana föremål så har immunförsvaret tillgång till flera, oerhört effektiva, vapen. Det viktigt att immunförsvaret känner igen, och endast angriper, skadliga föremål, så atCD40 is a cell surface receptor of pivotal importance that is expressed on several of the cells in the immune system. It is critical for many important events, such as T cell dependent B cell activation, isotype switching, somatic mutation and generation of B cell memory. The central role of CD40 in the immune system makes it an ideal target for antibody based immunotherapy. This led us to charact