Search for dissertations about: "PCNs"
Showing result 1 - 5 of 7 swedish dissertations containing the word PCNs.
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1. The relationship between fly ash chemistry and the thermal formation of polychlorinated pollutants during waste incineration
Abstract : The thermal formation of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), biphenyls (PCBs), and naphthalenes (PCNs) is a major problem in waste incineration. Ideally, rather than relying on air cleaning systems and treatment techniques, their formation should be minimized or, if possible eliminated. READ MORE
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2. Dioxins and dioxin-like compounds in thermochemical conversion of biomass : formation, distribution and fingerprints
Abstract : In the transition to a sustainable energy supply there is an increasing need to use biomass for replacement of fossil fuel. A key challenge is to utilize biomass conversion technologies in an environmentally sound manner. READ MORE
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3. Analytical methods for studying polychlorinated naphtalene congener profiles and levels in the Environment
Abstract : This thesis describes the development, refinement and application of analytical techniques in conjunction with other methods for studying the environmental occurrence, distribution and transformation of polychlorinated naphthalenes (PCNs). The procedures involve selective high-performance liquid chromatographic fractionation on a styrene-divinylbenzene gel permeation column and 2-(1-pyrenyl)ethyldimethylsilylated silica column combined with high resolution gas chromatography and low resolution mass spectrometry. READ MORE
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4. Properties and analysis of dioxin-like compounds in marine samples from Sweden
Abstract : Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (PCBs) have been assigned toxic equivalency factors (TEFs). These compounds are today routinely analysed with sophisticated analytical techniques. READ MORE
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5. Pancreatic cancer : prevention through improved diagnostics in individuals at risk
Abstract : With the intent of timely detecting malignant precursors or pancreatic cancer (PC) in an early stage, current guidelines recommend surveillance for patients with pancreatic cystic neoplasms (PCNs), such as intraductal papillary mucinous neoplasms (IPMN), and individuals at risk (IAR) for familiar/hereditary pancreatic cancer (PC). This surveillance is mainly performed with magnetic resonance imaging (MRI). READ MORE