Search for dissertations about: "phosphorus"

Showing result 1 - 5 of 352 swedish dissertations containing the word phosphorus.

  1. 1. The Story of Phosphorus Sustainability implications of global phosphorus scarcity for food security

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Dana Cordell; Stuart White; Jan-Olof Drangert; Julie Wilk; Johan Rockström; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; global phosphorus scarcity; peak phosphorus; global food security; sustainable resource use; food production and consumption system; transdisciplinary; systems thinking; global fosforbrist; peak fosfor; global matsäkerhet; hållbar resursanvändning; system för produktion och konsumtion av mat; transdisciplinaritet; systemtänkande; INTERDISCIPLINARY RESEARCH AREAS Water in nature and society; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN Vatten i natur och samhälle;

    Abstract : The story of phosphorus began with the search for the philosopher’s stone, and centuries later the critical role of phosphorus in soil fertility and crop growth was highlighted. Eventually, phosphorus was implicated in the global environmental challenge of eutrophication. READ MORE

  2. 2. Phosphorus Emissions from Fish Farms Observed and Predicted Effects

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Torbjörn Johansson; Kurt Pettersson; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Fish farm; phosphorus; eutrophication; model; Geovetenskap; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap; Sedimentology; sedimentologi;

    Abstract : During the last decades, fish farming has been a rapidly increasing industry in many European and North American countries. Sweden has a large potential for aquaculture, but there is also a strong concern about the effects on the environment that an increased aquaculture production may cause. READ MORE

  3. 3. Ash chemistry and fuel design focusing on combustion of phosphorus-rich biomass

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Nils Skoglund; Dan Boström; Rainer Backman; Franz Winter; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phosphorus; biomass; combustion; ash chemistry; fuel design; ash transformation; phosphorus-rich; ash-forming elements; fuel fingerprint; ash transformation reactions; Lewis base; Lewis acid; oorganisk kemi; Inorganic Chemistry;

    Abstract : Biomass is increasingly used as a feedstock in global energy production. This may present operational challenges in energy conversion processes which are related to the inorganic content of these biomasses. As a larger variety of biomass is used the need for a basic understanding of ash transformation reactions becomes increasingly important. READ MORE

  4. 4. Phosphorus retention in sediments : implications for aerobic phosphorus release in shallow lakes

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Stefan Löfgren; [1987]

    Abstract : .... READ MORE

  5. 5. Phosphorus Centers in π-conjugated Systems

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Elisabet Öberg; Sascha Ott; Koop Lammertsma; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phosphorus; phosphaalkene; phosphole; alkyne; π-conjugation; molecular electronics; Kemi; Chemistry;

    Abstract : Single-molecular electronics and organic material electronics are expanding research fields that ultimately aim for a vast variety of different applications, ranging from organic light-emitting diodes, to novel ways to improve the performance and decrease the size of electronics components. To achieve these goals, research has to be focused both on the development of functional molecules, but also on device fabrication. READ MORE