Sökning: "fas 3 fas 1"

Visar resultat 1 - 5 av 119 uppsatser innehållade orden fas 3 fas 1.

  1. 1. Stamskador och dess uppkomst vid mekaniserad kvalitetsgallring i norra Sverige

    Kandidat-uppsats, SLU/School for Forest Management

    Författare :Lovisa Hansén; [2024]
    Nyckelord :skördare; faktorer; gallringskvalitet;

    Sammanfattning : Gallring är ett ingrepp som görs i ett skogsbestånd med syfte att ta bort ett urval av träd för att gynna de kvarstående, samt att ge en intäkt i form av virke. Som skogsägare kan man prioritera vilka värden man vill gynna i sin skog; ekonomiska, sociala och/eller biologiska. LÄS MER

  3. 2. Life Cycle Perspective on School Buildings’ Energy Retrofitting

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Maryam Kafashtehrani; [2022]
    Nyckelord :School; building; LCA; IDA-ICE; energy retrofitting; insulation; ventilation; photovoltaic; PV; GHG;

    Sammanfattning : The building sector contributes substantial energy consumption and greenhouse gas (GHG) emissions. Energy efficiency is the main driver for the mitigation of climate change. Schools are placed with high energy consumption and GHG emitting. LÄS MER

  4. 3. Scann Loss Reduction on Phased Array Antenna

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Wanyu Zhang; [2022]
    Nyckelord :Phased Array Antenna; Vivaldi Antenna; Scan Loss; Coverage Angle; Sub-array; Embedded Radiation Pattern; Fasad Array Antenn; Vivaldi Antenn; Skanningsförlust; Täckningsvinkel; Sub-array; Inbyggt strålmönster;

    Sammanfattning : Phased array antennas with small size and light weight are proposed to make signal transmitting more efficiently and accurately. These antennas have such advantages that they can realize beam scanning over a large range, accurately track and identify targets within the observation range. LÄS MER

  5. 4. Tuning of the ESS Drift Tube Linac using Machine Learning

    Magister-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/European Spallation Source ESS AB

    Författare :Johan Lundquist; [2022]
    Nyckelord :Accelerator; drift tube linac; machine learning; neural network; ESS; linac; tuning; proton; longitudinal dynamics; beam physics; Physics and Astronomy;

    Sammanfattning : The European Spallation Source, currently under construction in Lund, Sweden, will be the world's brightest neutron source. It is driven by a linear accelerator designed to accelerate a beam of protons with 62.5 mA, 2.86 ms long pulses, working at 14 Hz. LÄS MER

  7. 5. Accelerated Testing of the End-plate Assembly of a Redox Flow Battery

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

    Författare :Saksham Jindal; [2022]
    Nyckelord :Energy Storage; Flow Batteries; Accelerated Testing; Contact Resistance; Endplate Assembly; Leak Rate; Stack Design; Energilagring; flödesbatterier; accelererad provning; kontaktmotstånd; montering av ändplattor; läckagehastighet; utformning av staplar.;

    Sammanfattning : As the world transitions to intermittent renewable energy sources like solar and wind, the need for long-duration energy storage technologies is becoming more and more prominent. In this regard, flow batteries are seen as a promising solution, owing to their inherent advantages like decoupling of power and energy, extremely high cycle life and negligible self-discharge. LÄS MER