Sökning: "E-20"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet E-20.

  1. 1. Optimering av energianvändning i ventilationssystemet för kv. Rektorn,Gävle

    M1-uppsats, Högskolan i Gävle/Avdelningen för bygg- energi- och miljöteknik

    Författare :Tara Marf; [2016]
    Nyckelord :Ventilation; energieffektivisering; VVX; byggnadsenergisystem;

    Sammanfattning : The threat of global warming and the uncertainty about future prices have played animportant role in increased focus on energy-related issues worldwide. The world'sgreatest environmental impact is closely related to energy use, as more than 80% of theworld's total energy supply comes from fossil fuels. LÄS MER

  3. 2. Evaluation of the efficiency of treatment techniques in removing perfluoroalkyl substances from water

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sandra Lundgren; [2014]
    Nyckelord :PFAS; removal efficiency; MIEX®; iron III chloride; Powdered activated carbon; nanofiltration membrane; dissolved organic carbon;

    Sammanfattning : Perfluoroalkylated substances (PFASs) are a group of synthetic compounds that have gained growing attention due to their environmental persistence, toxicity and their potential to bioaccumulate. Even though PFASs are not occurring naturally in our environment, they are globally distributed and can be found ubiquitously in air, water, soil, wildlife as well as in humans. LÄS MER

  4. 3. Energibalansen för ett nytt flerbostadshus i Mellansverige : Beräkningar intervjuer och analys av energikraven i Boverkets Byggregler

    Master-uppsats, Akademin för hållbar samhälls- och teknikutveckling

    Författare :Seif Alamerison; [2010]
    Nyckelord :;

    Sammanfattning : Abstract       This degree project comprises 30 credits, i.e. 20 weeks of work. The work mainly deals with the energy balance for a multi-family house in Västerås and the requirements for energy conservation in the Swedish building code, BBR. LÄS MER

  5. 4. Är den starkt växande vildsvinspopulationen ett hot mot tjäderns reden?

    Kandidat-uppsats, Institutionen för livsvetenskaper

    Författare :Jonas Svensson; [2009]
    Nyckelord :tjäder; tjäderrede; vildsvin; predation;

    Sammanfattning : This case study is based on a previous documented method of manufacturing artificial nest containing pre-colored hen eggs. This method is going to be used to find, if the wild boar population, which is growing in number, is a threat to the capercaillie population. LÄS MER

  7. 5. Forestry and climate change mitigation : climate change mitigation potential for different rotation lengths in Norway spruce forests, Götaland, Sweden with a short and a long term perspective

    L3-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Gustaf Gustafsson; [2009]
    Nyckelord :rotation age; net emission CO2; carbon dioxide sink; time horizon; CO2FIX V 3.1; climate change; forest management; Kyoto protocol;

    Sammanfattning : During the last year the awareness about the anthropogenic induced climate change due to increasing level of Green House Gases (GHGs), like for example carbon dioxide (CO2) has increased drastically. The atmospheric content of CO2 which is the GHG that the forest sector mainly can influence has increased from 280 ppm pre-industrial time (1750) to 379 ppm 2005. LÄS MER