Search for dissertations about: "transformation process"

Showing result 1 - 5 of 668 swedish dissertations containing the words transformation process.

  2. 1. Co-firing animal waste, sludge, residue wood, peat and forest fuels in a 50MWth CFB boiler : ash transformation, availability and process improvements

    Author : Henrik Hagman; Dan Boström; Rainer Backman; Anders Nordin; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Co-combustion; animal waste; peat; waste wood; forest residues; industrial sludge; limestone; CFB boiler; ash transformation; corrosion; erosion; ash and deposit characteristics; deposit buildup; boiler failures; availability; sulfation; boiler design; boiler conversion; waste derived fuels; large scale; Samförbränning; animaliskt avfall; torv; returträ; skogsbränsle; reningsslam; askomvandling; korrotion; erosion; ask- och beläggnings-karaktäristik; beläggningstillväxt; tillgänglighet; sulfatisering; panndesign; pannkonvertering; avfallsderiverade bränslen; storskalig;

    Abstract : The direct variable costs for heat and electricity production based on solid biomass fuel combustion is approximately 3-5 times lower than the costs in a fossil fuel-oil based boiler in Sweden. In addition waste derived biomass fuels are typically much cheaper than biomass not classified as waste. READ MORE

  4. 2. Co-firing complex biomass in a CFB boiler : ash transformation, corrosion control and materials selection

    Author : Henrik Hagman; Dan Boström; Rainer Backman; Mats Lundberg; Lars-Erik Åmand; Umeå universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ash transformation; process control; equilibrium calculations; boiler availability; failures; alloy selection; alloy degradation; vortex finder VF ; service life estimation; sulfation; chloridation; high temperature corrosion; biomass; waste derived fuels; forest residues; RDF; Biomal; slaughterhouse waste; peat; waste wood; industrial waste water treatment sludge; HAD; RSMT; Alloy 253MA; Alloy 310S; Alloy 800H HT; Alloy DS; Alloy 600;

    Abstract : The effects of greenhouse gas net emissions on global warming, stricter legislation on waste handling, and the pursuit of ever cheaper heat- and power production are all important factors driving the introduction of complex fuels in incineration plants. However - without fundamental knowledge regarding ash transformation, corrosion control, and materials selection – this introduction of potentially economically and environmentally beneficial fuels, might instead cause economic loss and environmentally adverse effects. READ MORE

  5. 3. Digital Transformation for Crisis Volunteerism : A study in the aftermath of the Swedish Forest Fires Crisis in 2018

    Author : Maria Murphy; Sofie Pilemalm; Tobias Andersson Granberg; Lena-Maria Öberg; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Digital transformation; Digitalisation; Crisis; Volunteerism; IS design; Practice; Process; Environment; Events stakeholders; ICT; Coordination; Digital transformation; Digitalisering; Kris; Frivillighet; IS design; Praktik; Process; Omgivning; Händelser; Intressenter; IKT; Koordinering;

    Abstract : In the summer of 2018, Sweden was taken by surprise and engulfed by forest fires on an unprecedented scale. Various forms of crisis volunteerism (CV) proved essential in the large scale response that ensued. READ MORE

  6. 4. Lost in Transformation : A critical study of two South African museums

    Author : Cecilia Rodéhn; Juliette Leeb du toit; Ciraj Rassool; Sabine Marshall; University of KwaZulu-Natal; []
    Keywords : HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; South Africa; museum; exhibition; collection; apartheid; the transformation; democracy; space; place; time; Cultural heritage and cultural production; Kulturarv och kulturproduktion; History; Historia; Cultural anthropology; Kulturantropologi; Social anthropology ethnography; Socialantrolopologi etnografi; Ethnicity; Etnicitet; African and comparative archaelogy; Afrikansk och jämförande arkeologi; Historia; History; Archaeology; Arkeologi; Etnologi; Ethnology; Kulturantropologi; Cultural Anthropology; Social and Economic Geography; Kulturgeografi; Cardiology; Kardiologi;

    Abstract : In this dissertation Transformation, as understood in South Africa, is investigated in the ‘Natal Museum’ and the ‘Msunduzi Museum Incorporating the Voortrekker Complex’ in terms of socio-political structures, the museum as a place, its collections and displays. I have emphasised the ethnographical perspective and analysed it by using key concepts such as new museology, time, space and place. READ MORE

  7. 5. The Dynamics of Digital Transformation : the Role of Digital Innovation, Ecosystems and Logics in Fundamental Organizational Change

    Author : Daniel A. Skog; Henrik Wimelius; Jonny Holmström; Jonathan Wareham; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; digital transformation; digital innovation; digital ecosystem; digital logic; process method;

    Abstract : This dissertation investigates digital transformation, understood here as processes where organizational actors engage in digital innovation and transform their organizations in order to respond to change in their business and technology environments. Specifically, it examines the dynamics of digital transformation, seeking to understand the key sociotechnical elements and their relationships that drive digital transformation processes and influence how they unfold over time. READ MORE