Sökning: "smog"

Visar resultat 1 - 5 av 32 uppsatser innehållade ordet smog.

  1. 1. Möjligt att mäta möten? : En studie av sambandet mellan mötesplatser, social sammanhållning och stadens rumsliga struktur

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för fysisk planering

    Författare :Maria Sjöland Kozlovic; [2023]
    Nyckelord :Mötesplatser; Social sammanhållning; Place Syntax; Place Syntax Tool; Space Syntax; Co-presence; Svaga band; Weak ties;

    Sammanfattning : Masteruppsatsen Möjligt att mäta möten? undersöker mötesplatsers betydelse för social sammanhållning. Social sammanhållning förstås i denna studie genom två teoretiska begrepp, co-presence och svaga band, begrepp hämtade från urbanmorfologisk, kulturgeografisk och urbansociologisk forskning. LÄS MER

  3. 2. Air quality prediction in metropolitan areas using deep learning methods

    Master-uppsats, Stockholms universitet/Institutionen för data- och systemvetenskap

    Författare :Augustin Ionut Ionascu; [2023]
    Nyckelord :air quality; forecasting; time-series; univariate; multivariate; multi-step; Attention; Transformer;

    Sammanfattning : The rapid growth of the world's urban population shows that people are increasingly moving to cities. In recent decades, the frequent occurrence of smog caused by increasing industrialization has brought environmental pollution to record highs. LÄS MER

  4. 3. Investigating the biogas potential from organic waste flows in Santiago de Chile – A study of the Metropolitan Region.

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Miljö- och energisystem

    Författare :Filippa Bengtsson; [2021]
    Nyckelord :Chile; “Metropolitan Region”; Santiago; “El Monte”; Providencia; waste; organic; biodegradable “waste management”; “industrial waste”; municipal*; tax*; law*; energy; electricity; “renewable energy”; biogas; “anaerobic digestion”; fuel; power; environment*; recycl*; rurality; Technology and Engineering;

    Sammanfattning : In the Metropolitan Region in Chile the population is growing as the inhabitants are relocating towards the capital of Santiago de Chile. The capital, located in a valley, is now home to over 40% of the population, and faces challenges with sufficient air-quality and waste disposal. LÄS MER

  5. 4. Secondary aerosol formation from dimethyl sulfide - Smog chamber experiments and detailed process modelling

    Kandidat-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Dana Lüdemann; [2020]
    Nyckelord :aerosol modelling; atmospheric physics and chemistry; marine aerosols; ADCHAM; aerosol; dimethyl sulfide; Physics and Astronomy;

    Sammanfattning : The aim of this thesis was to investigate the secondary aerosol formation from dimethylsulfide (DMS) using the aerosol dynamics, gas- and particle-phase chemistry kinetic multi-layer model, ADCHAM. The first simulations, concerning the butanol oxidation via hydroxyl radicals (OH), were performed to characterize the UV-light source of the AURA smog chamber (Aarhus university, Denmark), later used for the DMS experiments. LÄS MER

  7. 5. Novel Ammonia Storage Materials for SCR Systems : Carbon Materials – Salt Composites

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Nicolas Grimaldos Osorio; [2019]
    Nyckelord :magnesium chloride; ammonia; carbon materials; SCR; NOx reduction; sorption;

    Sammanfattning : The emissions of nitrogen oxides (NOx) are a serious environmental problem due to its relationship with the formation of smog, acid rain and because they are dangerous for human and animal health. These gases are produced in high quantities in diesel engines used for automotive applications, and different strategies are being used to reduce them, among which are the Selective Catalytic Reduction (SCR) systems. LÄS MER