Sökning: "ljus lampor"

Visar resultat 16 - 20 av 36 uppsatser innehållade orden ljus lampor.

  1. 16. Electric Field Domains in Quantum Cascade Lasers

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Författare :Tim Almqvist; [2017]
    Nyckelord :quantum cascade laser; QCL; electric field domain; EFD; NDR; negative differential resistivity; simulations; Tim; Almqvist; kvantkaskadlaser; Physics and Astronomy;

    Sammanfattning : Quantum cascade lasers (QCLs) are periodic semiconductor heterostructures, capable of producing laser gain. They have become an important source of coherent radiation in the mid infrared, and THz frequency regions. QCLs are non-linear electric devices, and often have bias regions of negative differential resistivity (NDR). LÄS MER

  3. 17. Explaining catch efficiency of cod pots using in situ behavioural studies

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Maria Hedgärde; [2016]
    Nyckelord :Grey seal; ; cod; CPUE; Fish behaviour; Seals-fishery conflict; Fishing gear; cod pot;

    Sammanfattning : The seal populations in the Baltic have been growing since the 1980s causing great eco-nomic losses for the fisheries since seals are using fishing gear as easy food sources. One solution to the seal and fishery conflict is the development of seal safe fishing gear. Pots are a possible solution in the cod (Gadus morhua) fishery. LÄS MER

  4. 18. Fjärrkontroll för omgivningsstyrning : Ett hjälpmedel för ökad självständighet

    Kandidat-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Jonathan Henriksson; Madeleine Susan Sheikh; [2016]
    Nyckelord :;

    Sammanfattning : Det huvudsakliga syftet var att designa och konstruera en fjärrkontroll för omgivningsstyrning på uppdrag av Abilia. Målet med slutprodukten var att ersätta de befintliga produkterna Control Omni samt Control Prog. i Abilias befintliga sortiment. LÄS MER

  5. 19. Effects of lighting on heart rates and respiratory rates in Calves

    Master-uppsats, SLU/Dept. of Animal Nutrition and Management

    Författare :Liv Spellerberg; [2016]
    Nyckelord :Calves; heart rate; respiratory rate; light intensities; novel object; Kalvar; hjärtfrekvens; andningsfrekvens; ljusintensiteter; novel object;

    Sammanfattning : This study aims to see if light intensities can affect calves’ physiological reactions to their environment, in this case an obstacle course and a novel-object test. An additional red light setting compared to a white light was also tested in low light intensities. Twelve 2–4 month old heifer calves were used. LÄS MER

  7. 20. Ljusmodulationer från LED ljuskällor kan störa flimmerkänsliga människor

    Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Robert Backe; [2015]
    Nyckelord :flicker; LED; health; human; Medicine and Health Sciences; Earth and Environmental Sciences;

    Sammanfattning : Flickering lights affect human health. This can manifest in a variety of ways, such as epileptic seizures, headaches, eyestrain and impaired visual performance. However, little is known about the health risks of invisible flickering from energy-efficient light emitting diodes (LED). LÄS MER