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Showing result 21 - 25 of 1523 essays matching the above criteria.

  1. 21. Utilizing wood ash to stimulate algal growth in mine waters from northern Sweden

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Katelyn Murphy; [2023]
    Keywords : acid rock drainage; acid mine drainage; controlled eutrophication;

    Abstract : Acid rock drainage (ARD), caused by the oxidation of sulphide bearing minerals, continues to be an environmental impact of both closed and operational mines, leading to waters with low pH values and high metal concentrations (Park et al., 2019). READ MORE

  3. 22. Integrated Solar Cooking : Materials and Manufacturing of Conical Solar Cookers

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Kristy San; Ida Lindström; [2023]
    Keywords : Asulma Centre; Conical Solar Cooker; Integrated Solar Cooking; Kenya; Solar Cooking; Asulma centre; konisk solugn; integrerad solmatlagning; Kenya; solmatlagning;

    Abstract : This bachelor thesis is written as a Minor Field Studies (MFS) project and funded by SIDA, Sweden’s International Development Cooperation Agency. The project was made in cooperation with Engineers Without Borders Sweden and the local organization Asulma Centre in Nairobi. READ MORE

  4. 23. Population dynamics of the spruce bark beetle Ips typographus in forest conservation areas and the interaction with biodiversity and natural enemies

    University essay from SLU/Dept. of Ecology

    Author : Evelina Andersson; [2023]
    Keywords : spruce bark beetle; population dynamics; conservation areas; biodiversity; natural enemies; species richness; managed forests; woodland key-habitats; nature reserves;

    Abstract : Biodiversity is rapidly decreasing and in need of more conservation efforts. However, the tree-killing European spruce bark beetle, Ips typographus (L.), has made forest conservation controversial by affecting conservation areas and possibly adjoining managed forests, yet is still a keystone species leaving decaying wood promoting biodiversity. READ MORE

  5. 24. Ekonomisk betydelse av biometrias kvalitetssäkring för skogsmaskinlag

    University essay from SLU/Department of Forest Biomaterials and Technology (from 131204)

    Author : Oskar Engström; [2023]
    Keywords : Kvalitetssäkrade skördare; vrak; ; timmerandel; ; virkesvärde; ; övermål; ; tillredning; ; ekonomi;

    Abstract : Virkesvärdet påverkas till stor del av skogsmaskinlagens förmåga att aptera och sortera virke enligt apteringsinstruktioner. Syftet med studien var att kvantifiera skillnader i virkesvärde mellan skogsmaskinlag som hade kvalitetssäkring från Biometria (A) och maskinlag utan deras kvalitetssäkring (B). READ MORE

  6. 25. Characterization of Compost from Reusable Industrial Streams: : physical, Nutrient, and Microbial Properties

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Ellen Ek Moreau; [2023]
    Keywords : Spent mushroom compost; apple orchard waste; soil amendment; compost optimization; circular agriculture;

    Abstract : The increasing global population, combined with soil degradation, poses challenges to food security, and raises concerns about the excessive and long-term use of conventional fertilizers. Evaluating sustainable alternative by-products for their soil-improving properties could offer a potential solution, particularly for Swedish fruit producers who can tap into local waste streams as a circular source of plant nutrients. READ MORE