Selaus julkaisuajan mukaan kokoelmassa 2 Tekniikka
Viitteet 41-60 / 160
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Model-based estimation of liquid flows in the blast furnace hearth and taphole
(Åbo Akademi - Åbo Akademi University, 11.10.2013)This thesis presents a set of methods and models for estimation of iron and slag flows in the blast furnace hearth and taphole. The main focus was put on predicting taphole flow patterns and estimating the effects of various ... -
Regioselective modification of galactose-containing polysaccharides in aqueous media
(Åbo Akademi - Åbo Akademi University, 25.10.2013)Biorefining is defined as sustainable conversion of biomass into marketable products and energy. Forests cover almost one third of earth’s land area, and account for approximately 40% of the total annual biomass production. ... -
Improvement of wet and dry web properties in papermaking by controlling water and fiber quality
(Åbo Akademi - Åbo Akademi University, 08.11.2013) -
The pH-dependent phase distribution of wood pitch components in papermaking processes
(Åbo Akademi - Åbo Akademi University, 15.11.2013)Wood contains only a very small amount of lipophilic extractives, commonly known as wood pitch. The pitch is known to cause severe problems in papermaking processes. The amount of pitch in process waters can be decreased ... -
Aqueous-phase reforming of renewables for selective hydrogen production in the presence of supported platinum catalysts
(Åbo Akademi - Åbo Akademi University, 29.11.2013)The evolution of our society is impossible without a constant progress in life-important areas such as chemical engineering and technology. Innovation, creativity and technology are three main components driving the progress ... -
Improving the competitiveness of electrolytic Zinc process by chemical reaction engineering approach
(Åbo Akademi - Åbo Akademi University, 18.02.2014)This doctoral thesis describes the development work performed on the leachand purification sections in the electrolytic zinc plant in Kokkola to increase the efficiency in these two stages, and thus the competitiveness of ... -
Terpenoid transformations over gold catalysts
(Åbo Akademi - Åbo Akademi University, 24.02.2014)Nowadays biomass transformation has a great potential for the synthesis of value-added compounds with a wide range of applications. Terpenoids, extracted from biomass, are inexpensive and renewable raw materials which often ... -
Some reformulations for the quadratic assignment problem
(Åbo Akademis förlag - Åbo Akademi University Press, 28.03.2014) -
Towards optimal fractionation of lignocellulosic biomass using switchable ionic liquids
(Åbo Akademi - Åbo Akademi University, 28.03.2014)- -
The pricing of industrial services
(Åbo Akademis förlag - Åbo Akademi University Press, 04.04.2014) -
Towards sustainable Iron- and steelmaking with economic optimization
(Åbo Akademi - Åbo Akademi University, 04.04.2014)The iron and steelmaking industry is among the major contributors to the anthropogenic emissions of carbon dioxide in the world. The rising levels of CO2 in the atmosphere and the global concern about the greenhouse effect ... -
Surface characterization of chemically modified fiber, wood and paper
(Åbo Akademi - Åbo Akademi University, 09.05.2014)Inorganic-organic sol-gel hybrid coatings can be used for improving and modifying properties of wood-based materials. By selecting a proper precursor, wood can be made water repellent, decay-, moisture- or UV-resistant. ... -
Topochemistry of physical and chemical pretreatments of biomass as investigated by FE-SEM, XPS and ToF-SIMS
(Åbo Akademi - Åbo Akademi University, 28.05.2014)Surface chemistry is of great importance in plant biomass engineering and applications. The surface chemical composition of biomass which includes lignin, carbohydrates and extractives influences its interactions with ... -
Novel technology for preparation of optically active chemicals
(Åbo Akademi - Åbo Akademi University, 12.06.2014)Asymmetric synthesis using modified heterogeneous catalysts has gained lots of interest in the production of optically pure chemicals, such as pharmaceuticals, nutraceuticals, fragrances and agrochemicals. Heterogeneous ... -
Oxalic acid and calcium oxalate in production of wood-containing paper : formation, analysis, and control
(Åbo Akademi - Åbo Akademi University, 18.06.2014) -
Action of laccase on mechanical softwood pulps
(Åbo Akademi - Åbo Akademi University, 21.08.2014) -
Methyl and ethyl chloride synthesis in microreactors
(Åbo Akademi - Åbo Akademi University, 19.09.2014)Methyl chloride is an important chemical intermediate with a variety of applications. It is produced today in large units and shipped to the endusers. Most of the derived products are harmless, as silicones, butyl rubber ... -
Ionic liquid mediated biomass deconstruction: from analysis challenges to fermentable sugars
(Åbo Akademi - Åbo Akademi University, 22.09.2014)Ionic liquids, ILs, have recently been studied with accelerating interest to be used for a deconstruction/fractionation, dissolution or pretreatment processing method of lignocellulosic biomass. ILs are usually utilized ... -
Deoxygenation of fatty acids for production of fuels and chemicals
(Åbo Akademi - Åbo Akademi University, 27.09.2014)The decreasing fossil fuel resources combined with an increasing world energy demand has raised an interest in renewable energy sources. The alternatives can be solar, wind and geothermal energies, but only biomass can be ... -
Influence of surface functionalization on the behavior of silica nanoparticles in biological systems
(Åbo Akademi - Åbo Akademi University, 03.10.2014)Personalized nanomedicine has been shown to provide advantages over traditional clinical imaging, diagnosis, and conventional medical treatment. Using nanoparticles can enhance and clarify the clinical targeting and imaging, ...