Search for dissertations about: "lamps"

Showing result 1 - 5 of 35 swedish dissertations containing the word lamps.

  2. 1. Year-round production of forest seedlings under LED lamps : Biological and energetic implications of indoor cultivation

    Author : Marco Hernandez Velasco; Uwe Zimmermann; Anders Mattsson; Frank Fiedler; Johanna Riikonen; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Picea abies; Pinus sylvestris; year-round cultivation; forest seedlings; LED lamps; light quality; light quantity; daily light integral; adaptive lighting control; greenhouse integrated photovoltaics; agrivoltaics; seedling growth performance; short-day treatments; cold hardiness; light shock stress; Engineering Science; Teknisk fysik;

    Abstract : Year-round cultivation of forest seedlings under light emitting diodes (LED) is a technology receiving increased attention from nurseries in the boreal forest regions. In these areas, the climate is characterized by strong seasonal fluctuations, resulting in short vegetation periods with narrow time windows for seedling transplanting and outdoor growth. READ MORE

  4. 2. Illumination matters. Revisiting the Roman house in a new light

    Author : Danilo Marco Campanaro; Digital Arkeologi Laboratoriet DARK Lab; []
    Keywords : HUMANIORA; HUMANITIES; House of the Greek Epigrams; Roman domestic space; Pompeii; lighting simulation; lamps; digital archaeology; 3D; virtual reality; eye-tracking; 3D GIS;

    Abstract : Interpreting the social complexity of the Roman house requires a careful evaluation of existing evidence. With this in mind, recent work in the field has proposed a variety of different approaches, focusing each time on a specific type of source (architecture and décor, ancient texts, material evidence from excavated houses), each in turn recursively deemed more adequate for the purpose or more fruitful and less biased. READ MORE

  5. 3. The Athenian lamp industry in Late Antiquity

    Author : Arja Karivieri; Turun yliopisto; []
    Keywords : HUMANIORA; HUMANITIES; lamps; Athens; late antiquity; trade; production; Classical archaeology and ancient history; Antikens kultur och samhälle;

    Abstract : .... READ MORE

  6. 4. Towards a Circular Economy with Environmental Product Policy : Considering dynamics in closing and slowing material loops for lighting products

    Author : Jessika Luth Richter; Internationella miljöinstitutet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extended producer responsibility; Circular Economy; critical materials; Policy Evaluation; product lifetime; lamps; lighting products; WEEE; Product Policy; ecodesign;

    Abstract : A Circular Economy (CE) can help to achieve the sustainable development goal of responsible consumption and production. Product policies, in turn, can support CE objectives by promoting reuse of products, recycling of materials, and providing ecodesign incentives for more durable products. READ MORE

  7. 5. On voltage fluctuations in low voltage grids – characterization, propagation and impact on LED lamps

    Author : Elena Gutierrez Ballesteros; Sarah Rönnberg; Aurora Gil de Castro; Izaskun Azcarate; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; household devices; LED lamps; light flicker; low voltage grid; voltage fluctuations; Electric Power Engineering; Elkraftteknik;

    Abstract : The work presented focuses on voltage fluctuations produced by household devices and their impact on the light output of LED lamps. Voltage fluctuations can produce unsteadiness on the light intensity of the lamps, so-called light flicker. An observer may or may not experience light flicker, depending on e.g. READ MORE