Popular Abstract in Swedish För att en multicellulär organism som männinskan ska kunna fungera måste celldelningen strikt kontrolleras. Protein som reglerar celldelning på cellulär nivå kallas för "tillväxtfaktorer". Vi har studerat ett sådant protein som kallas för transforming growth factor-beta (TGF-b). Namnet TGF-b kommer sig utav att detta protein kan transformera (omvandla) epiteliala njurceTransforming growth factor-beta (TGF-b) is a well-characterised growth regulatory factor, which acts on most cell types. This thesis has focused on the regulatory roles of TGF-b on normal lymphocytes. One interesting finding is that TGF-b acts both costimulatory and inhibitory on T-lymphocytes. The costimulatory effect depends on the presence of monocytes and is mediated by these cells. Furthermor

Governments attempting to regulate labour markets and control immigration are confronted with difficult questions. In the past, there was general agreement that the asylum system should not be exploited as a side entrance to the labour market. The two systems—asylum and labour market—were to be planned and maintained separately. But if migration is a prerequisite for asylum, does not increasingly

Six depression rating scales, GDS, Zung, CES-D, CPRS-D and Cornell, were compared in 40 patients. The validity was good for all scales except for the Cornell scale. A comprehensive investigation was done in 116 elderly stroke patients. There was no difference in prevalence and severity of post-stroke depression in relation to side of lesion. A test for receptive aphasia, the Token test, showed tha

Jan-Gunnar Sjölin's study deals with the response of 20 critics to the exhibition "Painting – the Extended Field" 1996-1997. The study concentrates primarily on the way the critics describe, contextualise, interpret and value the works that lie outside the traditional sphere of painting.

To fully utilize the available spectrum for a wireless communication system it is feasible to adapt to different situations on the channel. In this paper a flexible OFDM transmitter is presented together with basic theory behind OFDM transmission. It is shown that high flexibility can be obtained with a reasonable amount of additional hardware. Part of the design, the FFT-processor, has already be

Textile exerts various environmental impacts throughout its life cycle. Prevention of textile waste is one means to reduce these impacts. This study seeks to map-out the flow of textile products in the three Nordic Countries – Denmark, Finland and Sweden – from the time they are put on the market until they are discarded. Based on the findings on the flows as well as on the perception of stakehold

Abstract is not available

Computer-based control systems and networked control systems are hybrid systems where continuous time-driven dynamics and discrete event-driven dynamics interact. The temporal non-determinism introduced by computing and communication in the form of delays and jitter can lead to significant performance degradation. TrueTime is a MATLAB/Simulink-based simulation tool that takes a completely differen

STUDY SYNOPSIS Anterior cruciate ligament (ACL) injuries are common, severe and disabling knee injuries occurring in young active athletes. Treatment could be either surgical or non-surgical,both involving extensive rehabilitation for at least 4-6 months. Two RCTs comparing surgical and non-surgical treatment of ACL injured knees was performed in the 80’s and both failed to present any difference