Essays about: "läckage"

Showing result 1 - 5 of 77 essays containing the word läckage.

  1. 1. A Monte Carlo simulation study of collimators for a high-spatial-resolution Gamma Emission Tomography instrument

    University essay from Uppsala universitet/Tillämpad kärnfysik

    Author : Anastasios Anastasiadis; [2019]
    Keywords : ;

    Abstract : The present master thesis concerns a study of collimator designs for a high-spatial-resolution Gamma Emission Tomography (GET) instrument for used fuels utilizing Monte Carlo simulation codes. Designing a collimator for this purpose is a multilateral process that requires many interconnected and conflicting objectives to be taken into consideration. READ MORE

  2. 2. Low-dispersive Leaky-wave Antennas: A Viable Approach for Fifth Generation (5G) mmWave Base Station Antennas

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Oskar Dahlberg; [2019]
    Keywords : ;

    Abstract : In this work, a method to achieve reduced beam-squint in fully metallic leaky-wave antennas is proposed and its applicability for high frequency, high gain, base station antennas in future communication networks is indicated. The antenna is built in gap waveguide technology, where the fundamental mode is allowed to leak by removal of one of the waveguide walls. READ MORE

  3. 3. Hydrological and chloride transport processes in a small catchment of the Norrström Basin : a MIKE SHE modelling approach

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Zhuhuan Liu; Chen Zhou; [2019]
    Keywords : MIKE SHE; Hydrological Modelling; Kringlan; Water Balance; Particle Tracking;

    Abstract : Water is ubiquitous on our planet and constitutes a vital part of ecosystems. It supports the life of all beings on the earth while simultaneously evokes water-related issues such as water shortage, water contamination. As UN advocates, a globally shared blueprint for available clean water is depicted in Sustainable Development Goals (SDGs). READ MORE

  4. 4. Leakage Suppression for PCB-Waveguide Interconnects Using Hybrid Metasurfaces

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : David Gonzalez Gallardo; [2019]
    Keywords : ;

    Abstract : A metasurface is a two dimensional periodic structure which possessesmacroscopic equivalent electromagnetic properties such as anisotropy, negativerefractive index and Electromagnetic Band Gaps (EBG). EBGs havebeen used for the design of waveguide lters and gap waveguides. READ MORE

  5. 5. Summer cover crops after harvest of early potatoes control seed weeds

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

    Author : Amanda Ahlqvist; [2019]
    Keywords : cover crops; buckwheat; Fagopyrum esculentum; sudangrass; Westerwoldisch ryegrass; crimson clover; Persian clover; seed weeds; weed management; marigold; tagetes; early potatoes; potatoes;

    Abstract : To reduce pesticides and find greener alternatives for weed management in crop production has been a big issue worldwide. In Sweden, the Board of Agriculture has developed grants for farmers who use e.g. cover crops and new and greener strategies (e. READ MORE