A part of this thesis has been devoted to present general recuperator technology such as available gas turbine recuperator types, applications where recuperators are utilized, recuperator materials etc. An investigation of some compact and highly efficient heat transfer surfaces, for intended use in gas turbine recuperators, include the following surfaces: · Cross Wavy (CW) primary surface. · Cor

This paper analyzes MIMO propagation channels for personal area networks. Such channels show important differences to propagation channels in wide-area networks, due to the different environments in which the systems are operated, as well as due to different mobility models, ranges, and presence of humans in the environment, and the impact of the antenna arrangement. We present results from a rece

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DNA aneuploidy, which reflects changes in nuclear DNA-content, as determined cytometrically is a candidate prognostic factor in squamous cell carcinoma of the head and neck. The aim of this study was to compare two different preparation methods with respect to their use in detecting aneuploid tumor cell populations in malignant tumors of the head and neck. Fresh frozen tumor material was used. The

A sensitivity study was performed with a nonlinear elastic finite element model for monotonic analyses of wood-framed shear walls. The objective was to provide information about simplifying a model of wood-framed shear walls with no significant loss in accuracy. The simplifications concern features such as slips in joints between frame members, slips in hold-down connections, and bearing between a

The paper describes a project aiming at constructing functional mimics of the oxygen evolving complex in photosystem II, coupled to photoinduced charge separation. Biomimetic electron donors, manganese complexes and tyrosine, have been linked to a Ru(II)-polypyridine photosensitiser. Oxidation of the donors by intramolecular electron transfer from the photooxidised Ru(III) complex was demonstrated

Lösning av problemen i samband med ytbehandling av underlag med fuktöverskott, exempelvis betongplatta på mark. Anvisningar för att undvika skador.

It is proven that the essential spectrum of any self-adjoint operator associated with the matrix differential expression [GRAPHICS] consists of two branches. One of these branches (called regularity spectrum) can be obtained by approximating the operator by regular operators (with coefficients which are bounded near the origin), the second branch (called singularity spectrum) appears due to singul

An interest in measuring ion current in Homogeneous Charge Compression Ignition (HCCI) engines arises when one wants to use a cheaper probe for feedback of the combustion timing than expensive piezo electric pressure transducers. However the location of the ion current probe, in this case a spark plug, is of importance for both signal strength and the crank angle position where the signal is obtai

To test the hypothesis that the A/T polymorphism of the fatty acid-binding protein 2 gene (FABP2) is associated with impaired lipid metabolism and cardiovascular disease, we compared clinical characteristics and a parental history of cardiovascular disease between 213 sibling pairs discordant for the polymorphism. Siblings with an excess of the T54 allele had higher triglyceride (P = 0.002) and ch

The oxidation of methionine residues in proteins to methionine sulfoxides occurs frequently and protein repair by reduction of the methionine sulfoxides is mediated by an enzyme, peptide methionine sulfoxide reductase (PMSR, EC 1.8.4.6), universally present in the genomes of all so far sequenced organisms. Recently, five PMSR-like genes were identified in Arabidopsis thaliana, including one plasti

Aim: Antiepileptic drugs (AEDs) are known teratogens. Some specificity between different AEDs has been noted in the literature. The aim was to compare the teratogenic effect of valproic acid (VPA) and carbamazepine (CBZ) in monotherapy. Methods: Infants exposed to AEDs (n=1398) in early pregnancy were identified from the Swedish Medical Birth Registry. The number of infants with congenital malform

Lack of carbon has been assumed to be the most common limiting factor for bacterial growth in soil, although there are reports of limitation by other nutrients, e.g. nitrogen and phosphorus. We have studied which nutrient(s) limited instantaneous growth rates of bacteria in 28 Swedish soils using the thymidine or leucine incorporation technique to measure increased growth rate after adding differe

Popular Abstract in Swedish Denna avhandling handlar om hur ljus kan användas för att detektera, diagnosticera och behandla olika medicinska sjukdomstillstånd. Det vi dagligen kallar ljus är bara en liten del av det elektromagenetiska spektret, nämligen den del vi kan uppfatta med våra ögon. Elektromagnetisk strålning med andra våglängder används i stor utsträckning för klinisk diagnostik. RöntgenIn this thesis, different optical methods utilising visible light for characterization of tissue have been developed and evaluated. The feasibility of many of these methods has been demonstrated in the laboratory or in animal experiments. However, the goal is naturally to develop methods useful in the clinic, and thus the emphasis in this thesis has been put on in vivo examinations. Raman spectro

BACKGROUND--Formoterol and salmeterol are new long acting beta 2 adrenoceptor agonists. The maximum relaxant effect, potency and functional antagonism against carbachol induced contraction for salmeterol, formoterol and salbutamol have been compared in the guinea pig isolated trachea. In addition, the possibility of inducing a non-beta adrenoceptor mediated relaxation by salmeterol was studied. ME