Essays about: "conventional beams"

Showing result 1 - 5 of 24 essays containing the words conventional beams.

  1. 1. Dual-polarized fully-metallic Vivaldi antenna array in a triangular lattice

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

    Author : Omar Orgeira Alvarez; [2022]
    Keywords : Base station; Mobile communications; Phased arrays; Vivaldi antenna; Stripline; Basstation; Mobilkommunikation; Phased arrays; Vivaldi-antenn; Stripline;

    Abstract : New mobile communication generations need electromagnetic sensors capable of steering their high-directive beams towards the users. Conventional base stations use square lattice phased arrays to accomplish this task. These arrays are composed of a large number of radiating elements to achieve the required high directivity and scanning capabilities. READ MORE

  3. 2. Toxicity of Pulsed Beams in Radiation Therapy from a Physio-Chemical Perspective

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Karin Källén; [2021]
    Keywords : FLASH; radiotherapy; ultra high; dose rates; radiolysis; cancer; medical; FLASH; strålbehandling; ultrahög; doshastighet; radiolys; cancer; medicinsk;

    Abstract : A significant portion of cancer patients receive radiotherapy as part of their curative or palliative treatment plan. Radiotherapy is however greatly limited by radiation induced toxicities in healthy tissue surrounding the tumour, which can lead to long-term or acute complications for a patient. READ MORE

  4. 3. Concrete reinforced with FRP rebars : Evaluation of durability and behaviour in the Service Limit State (SLS)

    University essay from Luleå tekniska universitet/Byggkonstruktion och brand

    Author : David Ottosson; [2021]
    Keywords : GFRP; Durability; SLS; Atena;

    Abstract : One of the most common building materials is concrete and it has been for a long time. To overcome its low tensile capacity concrete structures are normally reinforced with steel rebars. READ MORE

  5. 4. Roof Structure of Bamboo for Solar Panels

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Alfons Hallgren; David Nordmark; [2021]
    Keywords : ;

    Abstract : Sustainable urbanisation is a pressing challenge in some parts of the world and cost-efficient and environmentally friendly building materials could become a solution to achieve sustainability. Bamboo has shown promising properties in tensile- and bending strength to be able to substitute conventional building materials. READ MORE

  6. 5. Development of Next-Generation Optical Tweezers : The New Swiss Army Knife of Biophysical and Biomechanical Research

    University essay from Umeå universitet/Institutionen för fysik

    Author : Daniel Nilsson; [2020]
    Keywords : optical tweezers; optical fiber tweezers; optical fiber; optical trapping; manipulation; optical force; cell trapping; biophysical; physicochemical; biomechanical; research; next-generation; raman spectroscopy; holographic optical tweezers;

    Abstract : In a time when microorganisms are controlling the world, research in biology is more relevant than ever and this requires some powerful instruments. Optical tweezers use a focused laser beam to manipulate and probe objects on the nano- and microscale. READ MORE