Sökning: "lamps"
Visar resultat 1 - 5 av 38 avhandlingar innehållade ordet lamps.
1. Year-round production of forest seedlings under LED lamps : Biological and energetic implications of indoor cultivation
Sammanfattning : 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. LÄS MER
2. Illumination matters. Revisiting the Roman house in a new light
Sammanfattning : 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. LÄS MER
3. The Athenian lamp industry in Late Antiquity
Sammanfattning : .... LÄS MER
4. Towards a Circular Economy with Environmental Product Policy : Considering dynamics in closing and slowing material loops for lighting products
Sammanfattning : 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. LÄS MER
5. On voltage fluctuations in low voltage grids – characterization, propagation and impact on LED lamps
Sammanfattning : 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. LÄS MER