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Early events in T cell development

Popular Abstract in Swedish Immunförsvaret är till för att bekämpa patogener såsom bakterier, virus, parasiter och svamp. Det kan också bekämpa cancerceller även om dessa har en förmåga att undkomma till slut. För att kunna känna igen och eliminera främmande kroppar måste immunförsvaret kunna skilja på dem och våra kroppsegna ämnen. Immunförsvaret består av vita blodkroppar. Vita blodkroppar är enT cells constitute a heterogenous population of lymphocytes. Their unifying property is that they express surface bound antigen-receptors, called T cell receptors (TCRs). The TCR is a heterodimer composed of either TCRalpha and beta chain proteins (alphabeta TCR) or gamma and delta chain proteins (gammadelta TCR). Depending on which TCR isotype that is expressed, the T cells are divided into alpha

A scalable pipelined complex valued matrix inversion architecture

This paper presents a fast, pipelined and scalable hardware architecture for inverting complex valued matrices. The matrix inversion algorithm involves, a QR-factorization based on the squared Givens rotations algorithm, the application of a recurrence algorithm for inversion of an upper triangular matrix R, and a matrix multiplication of R-1 with Q. We show that traditional triangular array archi

Tracking the Mind's Eye

This thesis investigates, in three studies based on eye-tracking experiments, the relationship between eye movements and mental imagery. The first study is an investigation of eye movements during mental imagery elicited both visually and verbally. The use of complex stimuli and the development of a novel method where eye movements were recorded concurrently with verbal data enabled this relation

Management by Recognition: An Interactionist Study of Normative Control in Voluntary Work

Many contemporary work organizations are concerned with how they can influence employees’ intrinsic motivation. Their quest follows a widespread realization that people do not necessarily work harder because of monetary incentives or direct commands. Instead, people’s inner motives, their urge to self-realize and get recognition, are seen as key factors influencing workers’ mindsets and behaviors.

Att skapa en konsument : Råd & Rön och den statliga konsumentupplysningen

The Swedish consumer magazine Råd & Rön (”Advice and Results”) has been available to Swedish consumers since 1958. For a major part of this time the Swedish state, represented by Konsumentverket (the Swedish Consumer Agency) and its predecessor, Konsumentinstitutet (the National Institute for Consumer Information), was the owner of the magazine. In 2006 Råd & Rön was sold to the independen

Trajectory Generation for Assembly Tasks Via Bilateral Teleoperation

Abstract in UndeterminedFor assembly tasks, the knowledge of both trajectory and forces are usually required. Consequently, we may use kinesthetics or teleoperation for recording human demonstrations. In order to have a more natural interaction, the operator has to be provided with a sense of touch. We propose a bilateral teleoperation system which is customized for this purpose. We introduce diff

Proton elastic form factor ratios to Q = 3.5 GeV2 by polarization transfer

The ratio of the proton elastic electromagnetic form factors, GEp/GMp, was obtained by measuring Pt and P, the transverse and longitudinal recoil proton polarization components, respectively, for the elastic epepreaction in the four-momentum transfer squared range of 0.5 to 3.5 GeV2. In the single-photon exchange approximation, GEp/GMp is directly proportional to Pt/P. The simultaneous measurement