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Matched Gaussian Multitaper Spectrogram

A novel multitaper spectrogram estimator for Gaussian func- tions is proposed. The multitapers are the Hermite functions and a fixed number of few multitapers are used in the estimate. The weighting factors of the different spectrogram functions are optimized to give the approximative Wigner distribution for the Gaussian function. The performance of the estimator is investigated in terms of resolu

Single-­molecule spectroscopy of π-­conjugated polymers

When applied to condensed-matter samples of large organic molecules, optical spectroscopy faces the problem of inhomogeneous broadening caused by the diversity of environments and conformations that sample molecules are subjected to. This severely limits the information that can be extracted from optical spectra. Single-molecule spectroscopy offers the most natural way to overcome this problem. Π-

Pollution-Induced Community Tolerance (PICT) of Bacteria: Evaluation in Phenol- and Antibiotic Polluted Soil

The effects of organic pollutants on the soil microbial community were studied in this work. The main aim was to evaluate the use of pollution-induced community tolerance (PICT) in studying the effects of pollution. The leucine incorporation technique (indicating bacterial growth) was used to monitor changes in tolerance. The impact of toxic substances on bacterial and fungal growth (acetate-in-er

Improved channel estimation for iterative receivers

In iterative receiver structures, soft information becomes available after the decoding stage in the first iteration. This information is used to enhance the quality of the channel estimates for the next iteration. Channel estimation plays a crucial role in multi-user detection because the effective identification sequence for each user strongly depends on the channel characteristics. To combine d

Physiological and biochemical aspects of vegetable processing. A case study on carrots

The aim of the present study was to enhance our understanding of vegetables as living organisms, interacting dynamically with the environment, and to explore the possible influence of metabolic changes on subsequent processing operations. Growing conditions, harvesting and handling in the packing house and storage conditions are key events leading to a defined “physiological status” of the vegetab

Corporate innovation and competitive environment

Empirical studies have shown that the characteristics of the competitive environment influence the corporate innovation activities of U.S. firms. This study attempts to internationalize these studies in two ways. First, it examines the environment-corporate innovation relationship in Norwegian manufacturing firms. Second, it examines how the firms’ corporate innovation activities are influenced by

Lead in blood. ICP-MS studies of lead in plasma, blood and erythrocyte proteins

Popular Abstract in Swedish BLY I BLOD. ICP-MS-studier av bly i plasma, blod och erythrocyt-proteiner De flesta studier som har gjorts av blys giftighet är grundade på blyhalten i blod, och man vet idag mycket om vilka halter som är förknippade med olika skador. Cirka 99% av blyet i blod finns i de röda blodkropparna, medan plasma vanligen innehåller mindre än 1%. Man har länge trott att anledninAn inductively coupled plasma mass spectrometry (ICP-MS) method for the determination of lead in blood plasma has been developed. The detection limit was below 0.1 microgram/liter, and the precision 5%. There was no significant difference between levels in plasma and serum. Studies of individuals with varying lead exposure showed that in the general population the plasma concentrations were less t

The accessibility and chemical activity of polycyclic aromatic hydrocarbons in soil

Popular Abstract in Swedish Häri avhandlas tesen att bättre insikt i kemisk jordförorening med tjärämnen kan erhållas genom två analytiska begrepp: tillgänglighet och kemisk aktivitet. Tillgänglighet syftar på andelen av den totala mängden PAH som är tillgänglig för processer vilka sker utanför jordpartiklarna. Det andra begreppet, kemisk aktivitet, är termodynamiskt. Den kemiska aktiviteten är häThis thesis proposes the use of two concepts: accessibility and chemical activity. Accessibility describes the mass quantity of PAHs that is or can become available within a given time span and under given conditions. Chemical activity quantifies the energetic state of the PAHs that determines the potential for spontaneous physicochemical processes, such as diffusion and partitioning. Chemical act