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Thermodynamic Simulation of HCCI Engine Systems

Popular Abstract in Swedish Avhandlingen omfattar förutom en kort inledning, i huvudsak två delar: (1) Beskrivning av teorin bakom ett datorbaserat verktyg för simulering av termodynamiken i ett motorsystem, där främst motorer med Homogen Kompressionsantändning (Homogeneous Charge Compression Ignition, HCCI) avses. Med system avses förutom själva motorn, turboladdare, laddluftkylare, insug och avgThis thesis focuses on engine system simulation using thermodynamics and chemical kinetic models to investigate the performance and efficiency of Homogeneous Charge Compression Ignition (HCCI) engines for stationary applications. It includes the development of software as well as models for engine, turbocharger, intercooler, inlet and exhaust manifolds, wastegate valve, inlet air humidifier, inle

Monoclonal Antibody against T-Cell Receptor alphabeta Induces Self-Tolerance in Chronic Experimental Autoimmune Encephalomyelitis.

The therapeutic effect of monoclonal antibody (H57-597 MoAb) against T-cell receptor (TCR) alpha beta has been investigated on MOG(35-55)-induced experimental autoimmune encephalomyelitis (EAE), as a model system for T-cell-mediated chronic inflammation in the central nervous system (CNS). Short-term administration of the anti-TCR alpha beta immediately after immunization protected the mice from E

Corporate Social Responsibility and Development : Case of the Chad-Cameroon Oil Pipeline Project

As society today increasingly understands the impact of transnational corporate operations, an increasing recognition on the part of corporations of their responsibility for social and environmental well being of people in poor countries appears. The norm - Corporate Social Responsibility (CSR) grew out of such logic. The present study explores the extent to which CSR can be expected to contribute

Effective properties of heterogeneous materials with applications in electromagnetics

Composite materials, i.e, mixtures of two or more materials, are commonly used in industry, because they often have outstanding properties in comparison with the original materials. In many cases the inhomogeneities are on a very fine scale, which makes it difficult to perform a full numerical simulation of the material. On the fine scale we have rapid oscillations in the material parameters, but

Association between IgM against an aldehyde-modified peptide in apolipoprotein B-100 and progression of carotid disease

Background and Purpose - Autoantibodies against antigens in oxidized low-density lipoprotein are common in people; experimental studies suggest that these immune responses have a functional role in the disease process. The aim of this study was to evaluate the relationship between the immune response against one defined oxidized low-density lipoprotein antigen, the aldehyde-modified peptide corres

Metabolic engineering of Saccharomyces cerevisiae for xylose utilization.

Metabolic engineering of Saccharomyces cerevisiae for ethanolic fermentation of xylose is summarized with emphasis on progress made during the last decade. Advances in xylose transport, initial xylose metabolism, selection of host strains, transformation and classical breeding techniques applied to industrial polyploid strains as well as modeling of xylose metabolism are discussed. The production

Dacrymenone and VM 3298-2 - New antibiotics with antibacterial and antifungal activity

Two new antibiotic metabolites, dacrymenone (1) and VM 3298-2 (2), were isolated from fermentations of a Dacrymyces sp., and their structures were determined by spectroscopic techniques. Dacrymenone (1) is a new eremophilane sesquiterpenoid while VM 3298-2 (2) is a bis-enol ether between methyl pyruvate and 4,6-dihydroxycyclohexan-1,3-dione. Dacrymenone (1) shows weak antibacterial and antifungal

The ageing of society, health services provision and taxes

This paper investigates the outcome of ageing on taxes and hospitalisation of the elderly using panel data on 23 Swedish county councils 1980-1999. We test two hypotheses; whether a larger share of elderly has no negative effect on bed days per elderly person and no positive effect on tax rates. We reject the first hypothesis but fail to reject the second hypothesis. Further we cannot reject the h

Effects of type of packaging material on shelf-life of fresh broccoli by means of changes in weight, colour and texture

Five polymeric films were studied to determine their ability to retain the colour, weight and texture of broccoli (Brassica oleracea L. var. Italica "Monterey"). The materials were oriented polypropylene (OPP), polyvinyl chloride (PVC) and two different low-density polyethylenes (LDPE), one of which contained a sachet reported to absorb ethylene. The broccoli was packaged and stored at 4 and 10 de

Isolation of obligate anaerobic rumen bacteria capable of degrading the neurotoxin beta-ODAP (beta-N-oxalyl-L-alpha,beta-diaminopropionic acid) as evaluated by a liquid chromatography/biosensor analysis system

Six pure strains of obligate anaerobes capable of degrading the toxin beta-N-oxalyl-L-alpha, beta-diaminopropionic acid (beta-ODAP) contained in grass pea (Lathyrus sativus) have been isolated from cow rumen. The new isolates were identified as Megasphaera elsdenii (five different genotypes) and Clostridium bifermentans using 16S rDNA analysis. The beta-ODAP degrading efficiency of the isolates wa

Analysis of effector pathways in arthritis

Rheumatoid arthritis (RA) is a multifactorial, polygenic autoimmune disease. For effective treatment and control of RA, understanding of disease pathways and identification of genes involved are essential. Animal models are efficient tools to identify such pathogenic mechanisms and genes underlying the disease process. In the present study, collagen antibody induced arthritis (CAIA), a mouse model

Coherent soft particle production in Z decays into three jets

Low-energy particle production perpendicular to the event plane in three-jet events produced in Z decays in e(+)e(-) annihilation is measured and compared to that perpendicular to the event axis in two-jet events. The topology dependence of the hadron production ratio is found to agree with a leading-order QCD prediction. This agreement and especially the need for the presence of a destructive int

Knut Wicksell, Gustav Cassel, Eli Heckscher, Bertil Ohlin and Gunnar Myrdal on the Role of the Economist in Public Debate

In Swedish public debate, economists have been more influential than any other category of social scientists. We examine the views of five great Swedish economists on the role of the university economist in the public arena. What did they say about scholarly objectivity and value judgements, about political commitment and educating the people? The five economists are Knut Wicksell, Gustav Cassel,