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En solfångarhybrid har utvecklats och utvärderats på avdelningen för Energi och ByggnadsDesign på Lunds Tekniska Högskola, LTH. Solfångarhybriden, ”Solfönstret”, består av solcellslaminerade absorbatorer placerade i ett fönster bakom glasrutorna. Solfönstret finns byggt i ett enfamiljshus, Solgården, i Älvkarleö utanför Gävle. För att minska investeringskostnaderna för solel har reflektorer placerA PV/T collector has been developed and evaluated at the department of Energy and Building Design at the Technical University of Lund, LTH in Sweden. The PV/T, a “solar window” made of PV cells laminated on solar absorbers is placed in a window behind the glazing. The solar window is built into a single family house, Solgården, in Älvkarleö outside Gävle in the eastern part of Sweden. To reduce th

This is a study on the potential of NOAA satellite data for operational early warning and food security monitoring at a national level. Ethiopian NOAA NDVI 15-day composites (1981-1985) are analysed and compared to precipitation data including time series records from more than 200 stations. Anomaly analyses are introduced and the regional distribution of the 1984 drought is clearly identified. A

Popular Abstract in Swedish Immunförsvaret, som även kan benämnas immunsystemet, kan betraktas som ett organ som är utspritt i hela kroppen istället för samlat på ett ställe. Immunsystemet består av ett stort antal vita blodkroppar som finns i blodet, ute i vävnaderna, samt samlade i lymfkörtlar och mjälten. Immunsystemets uppgift är att försvara oss från yttre faror som virus och bakterier samt aThe small intestine contains a large number of T lymphocytes within the single-layered epithelium that separates the gut lumen from the lamina propria. These intraepithelial T lymphocytes have potent cytolytic and immunoregulatory capacities, thought to be important for fighting infections, neoplastic growth, and sustaining epithelial integrity. This thesis is based on three original articles wit

This paper describes how PID controllers can be designed by optimizing performance subject to robustness constraints. The optimization problem is solved using convex-concave programming. The method admits general process descriptions in terms of frequency response data and it can cope with many different constraints. Examples are presented and some pitfalls in optimization are discussed.

Popular Abstract in Swedish Stroke, som kan orsakas av att en hjärnartär blockeras av en blodpropp, är en av de vanligaste orsakerna till död eller handikapp bland vuxna människor, men få behandlingsalternativ existerar. Två olika potentiella behandlingsstrategier är 1) att skydda nervceller från att dö på grund av stroke och 2) att i efterhand ersätta förlorade celler och nervcellskretsar. Ett säIn this thesis, two potential endogenous mechanisms for neuronal survival and repair have been investigated in a rat model of stroke, middle cerebral artery occlusion (MCAO): signaling of the GDNF family of neurotrophic factors, and neurogenesis from endogenous progenitor cells. As determined by in situ hybridization for GDNF family ligand and receptor genes, MCAO caused widespread upregulation o

This book investigates the relationship between the quality of working life (QWL) and competitiveness in the specific context of organisational innovations in Sweden. It proceeds by way of reviewing the literature of both a general theoretical nature on innovations, including Swedish research, and then looks more closely at the empirical evidence on the QWL-competitiveness relationship at the micr

Removal of Ca2+ from PSII lead to impaired electron transfer from YZ to P680+ and to inhibition of S state transitions which results in a modified stable S2 state (probed by a stable multiline EPR signal) and the induction of the S2YZox state ("split" signal) by illumination at 0° C. We have performed an EPR study on the pH dependence of these reactions in Ca2+-depleted PSII (prepared by citrate t

This LUii report presents a research review of the field of over-indebtedness and consumption patterns in digital society, which addresses phenomena such as e-commerce, smart phones and their role in consumption and credit, new methods of payment, debt-incurrence and more. The research review has been produced by researchers at Lund University on behalf of the Swedish Enforcement Authority, why it

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Popular Abstract in Swedish Undersökningar av astrofysikaliska spektra kräver noggranna atomära data, som t.ex. våglängder och övergångssannolikheter. Denna avhandling bidrar med atomära data av hög precision för astrofysikaliska och kosmologiska tillämpningar. Mätningarna har gjorts på ljus producerat i en hålkatodlampa med hjälp av Fouriertransformspektrometri. Genom att observera våglängdsskifInvestigations of astrophysical spectra require accurate atomic data, such as wavelengths and transition probabilities. This thesis provides high-precision atomic data for astrophysical and cosmological applications. The measurements have been carried out using Fourier transform spectrometry on light produced in a hollow cathode light source. The variability of fundamental constants is investigat