Sökning: "bättre luft"

Visar resultat 6 - 10 av 193 uppsatser innehållade orden bättre luft.

  1. 6. Improving Visibility Forecasts in Denmark Using Machine Learning Post-processing

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :August Thomasson; [2023]
    Nyckelord :visibility forecast; fog; machine learning; numerical weather predicition; XGBoost; Random Forest; siktprognos; dimma; maskininlärning; numerisk vädermodell; XGBoost; Random Forest;

    Sammanfattning : Accurate fog prediction is an important task facing forecast centers since low visibility can affect anthropogenic systems, such as aviation. Therefore, this study investigates the use of Machine Learning classification algorithms for post-processing the output of the Danish Meteorological Institute’s operational Numerical Weather Prediction (NWP) model to improve visibility prediction. LÄS MER

  3. 7. Evaluation of two-stage GAC filtration for PFAS reduction in drinking water

    Master-uppsats, SLU/Department of Molecular Sciences

    Författare :Julia Söderberg; [2023]
    Nyckelord :Per- and polyfluoroalkyl substances PFAS ; Granular activated carbon GAC ; drinking water; removal efficiency; DWTP;

    Sammanfattning : PFAS, or per- and polyfluoroalkyl substances, are a group of chemicals found in a wide range of industrial and consumer products. Due to their persistent nature and widespread use, concerns have been raised about their impact on human health and the environment. LÄS MER

  4. 8. A Cost Benefit Analysis of Continuous Cover Forestry in Djurholmen, Skåne

    Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Moa Morency; [2023]
    Nyckelord :continuous cover forestry CCF ; clear-cut forestry CF ; cost-benefit analysis CBA ; ecosystem services; climate mitigation; timber production; Norway Spruce Picea abies ; Earth and Environmental Sciences;

    Sammanfattning : Forests and forest products are important, not just for timber production, the forest ecosystem plays several important roles, such as water purification, carbon sequestration for climate mitigation and recreational values. How the forests are managed varies throughout the globe, in Sweden the most used system is the clearcutting system (CF), however continuous cover forestry (CCF) is gaining popularity and is being tested in several places. LÄS MER

  5. 9. Dynamic Modelling of a Fluidic Muscle with a Comparison of Hysteresis Approaches

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Tess Antonsson; [2023]
    Nyckelord :Mechatronics; Soft Actuators; Pneumatic Artificial Muscles; Dynamic Modelling; Hysteresis; Maxwell-Slip Model; Generalised Bouc-Wen Model; Mekatronik; Mjuka Ställdon; Pneumatiska Artificiella Muskler; Dynamisk Modellering; Hysteres; Maxwell-Slip Modell; Generaliserad Bouc-Wen Modell;

    Sammanfattning : n recent years, there has been a surge in interest and research into the utilisation of soft actuators within the field of robotics, driven by the novel capabilities of their inherently compliant material. One such actuator is the Pneumatic Artificial Muscle (PAM) which offers a high power-to-mass ratio, compliance, safety, and biological mimicry when compared to their traditional counterparts. LÄS MER

  7. 10. Gröna Tak : En studie om hur bibliotekets sedumtak på Högskolan i Gävle har fungerat i praktiken

    Uppsats för yrkesexamina på grundnivå, Högskolan i Gävle/Energisystem och byggnadsteknik

    Författare :Alva Bredeson; Julia Dahlhjelm; [2023]
    Nyckelord :Green roofs; Sedum roofs; Benefits; Maintenance; Gröna tak; Sedumtak; Fördelar; Underhåll;

    Sammanfattning : Gröna tak är en gynnsam lösning till urbaniseringens negativa effekter, som exempelvis minskad biologisk mångfald, sämre luft och problem med dagvattenhantering. Sedumtak, ängstak och biotoptak är några av de olika typer av gröna tak som finns. Sedumtaket har många fördelar och passar bra till Sveriges nordliga klimat. LÄS MER