Essays about: "ljuskvalitet"

Found 4 essays containing the word ljuskvalitet.

  1. 1. Solens betydelse för skörd i den ätliga trädgården

    University essay from SLU/Department of Agricultural Biosystems and Techology

    Author : Sandra Persson; [2019]
    Keywords : solljus; ljus; ljuskvalitet; fotobiologiska processer; ekologiska anpassningar; ätliga växter; ätliga perenner; ätlig trädgård; växtförslag;

    Abstract : New sustainable cultivation systems are on the rise where edible perennial plants play a central role. The interest in growing food for the household has increased, perhaps as an effect of increased distrust of food production and a desire to do something good in a climate-threatened world. READ MORE

  2. 2. Improving green LEDs: A meta study into the causes and remedies of the green gap

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Author : Andreas Malmgren; [2015]
    Keywords : Light emitting diodes; quantum wells; recombination rate; Technology and Engineering; Physics and Astronomy;

    Abstract : This literature review investigates and evaluates different strategies to improve InGaN-based light emitting diodes (LED) by analyzing published theoretical and experimental studies. The issues of non-uniform carrier distribution, piezoelectric polarization fields and poor wave function overlap can be mitigated by the use of InGaN barriers and substrates as well as staircase designs for quantum wells (QW). READ MORE

  3. 3. Påverkan på morfologi hos prydnadsväxten Calibrachoa som resultat av belysning underifrån med olika våglängder av ljus

    University essay from SLU/Horticulture (until 121231)

    Author : Olle Lind; [2012]
    Keywords : belysning; end-of-day response; krukväxter; LED; monokromatiskt ljus; prydnadsväxter; retardering; växthus;

    Abstract : I detta försök har Calibrachoa ’Callie Bright Red’ odlats i 9 olika behandlingar av LED-belysning underifrån. Samtliga behandlingar utfördes i växthuskammare med ett tredelat dygn på 8 timmar naturligt dagsljus, 8 timmar endast LED-belysning och 8 timmar mörker. READ MORE

  4. 4. Ljusets betydelse för rotknoppars groningsvillighet i åkermolke (Sonchus arvensis L.)

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Magnus Åhman; [2011]
    Keywords : Åkermolke; Sonchus arvensis; rotknoppar; vegetativ förökning; vegetativ reproduktion; fotoperiodism; fotoperiod; ljusintensitet; ljuskvalitet;

    Abstract : This study is about how changed light conditions induce dormancy in plants. It is divided in two parts. First a literature study where quantification of light, the concept dormancy, photoperiod and light quality are discussed. READ MORE