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Author Franceschini, S.; Pansera, M.
Title Beyond unsustainable eco-innovation: The role of narratives in the evolution of the lighting sector Type Journal Article
Year 2015 Publication Technological Forecasting and Social Change Abbreviated Journal Technological Forecasting and Social Change
Volume (down) 92 Issue Pages 69-83
Keywords Lighting, Society
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Address
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ISSN 0040-1625 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ christopher.kyba @ Serial 1186
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Author Chamorro, E.; Bonnin-Arias, C.; Perez-Carrasco, M.J.; Munoz de Luna, J.; Vazquez, D.; Sanchez-Ramos, C.
Title Effects of light-emitting diode radiations on human retinal pigment epithelial cells in vitro Type Journal Article
Year 2013 Publication Photochemistry and Photobiology Abbreviated Journal Photochem Photobiol
Volume (down) 89 Issue 2 Pages 468-473
Keywords Human Health; Apoptosis/*radiation effects; Biological Markers/metabolism; Caspases/metabolism; Cell Survival/radiation effects; DNA Damage; Epithelial Cells/cytology/metabolism/*radiation effects; Histones/metabolism; Humans; Light; Membrane Potential, Mitochondrial/*radiation effects; Mitochondria/*radiation effects; Photoperiod; Primary Cell Culture; Reactive Oxygen Species/metabolism; Retinal Pigment Epithelium/cytology/metabolism/*radiation effects
Abstract Human visual system is exposed to high levels of natural and artificial lights of different spectra and intensities along lifetime. Light-emitting diodes (LEDs) are the basic lighting components in screens of PCs, phones and TV sets; hence it is so important to know the implications of LED radiations on the human visual system. The aim of this study was to investigate the effect of LEDs radiations on human retinal pigment epithelial cells (HRPEpiC). They were exposed to three light-darkness (12 h/12 h) cycles, using blue-468 nm, green-525 nm, red-616 nm and white light. Cellular viability of HRPEpiC was evaluated by labeling all nuclei with DAPI; Production of reactive oxygen species (ROS) was determined by H2DCFDA staining; mitochondrial membrane potential was quantified by TMRM staining; DNA damage was determined by H2AX histone activation, and apoptosis was evaluated by caspases-3,-7 activation. It is shown that LED radiations decrease 75-99% cellular viability, and increase 66-89% cellular apoptosis. They also increase ROS production and DNA damage. Fluorescence intensity of apoptosis was 3.7% in nonirradiated cells and 88.8%, 86.1%, 83.9% and 65.5% in cells exposed to white, blue, green or red light, respectively. This study indicates three light-darkness (12 h/12 h) cycles of exposure to LED lighting affect in vitro HRPEpiC.
Address Neuro-Computing and Neuro-Robotics Research Group, Universidad Complutense de Madrid, Madrid, Spain. eva.chamorro@opt.ucm.es
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Language English Summary Language Original Title
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ISSN 0031-8655 ISBN Medium
Area Expedition Conference
Notes PMID:22989198 Approved no
Call Number LoNNe @ christopher.kyba @ Serial 511
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Author Cochrane, A.
Title Cities of light: placemaking in the 24-hour city. Type Journal Article
Year 2004 Publication Urban Design Quarterly Abbreviated Journal
Volume (down) 89 Issue Pages 12–14
Keywords Society
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ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 1018
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Author Amir, S.; Stewart, J.
Title The effectiveness of light on the circadian clock is linked to its emotional value Type Journal Article
Year 1999 Publication Neuroscience Abbreviated Journal Neuroscience
Volume (down) 88 Issue 2 Pages 339-345
Keywords Society
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Address
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ISSN 0306-4522 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 987
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Author Jones, B.A.
Title Spillover health effects of energy efficiency investments: Quasi-experimental evidence from the Los Angeles LED streetlight program Type Journal Article
Year 2018 Publication Journal of Environmental Economics and Management Abbreviated Journal Journal of Environmental Economics and Management
Volume (down) 88 Issue Pages 283-299
Keywords Human Health; LED; public health; outdoor lighting; Los Angeles; economics; energy efficiency; breast cancer; fossil fuel carbon emissions
Abstract Payback estimates of energy efficiency investments often ignore public health externalities. This is problematic in cases where spillover health effects are substantial, such as when the application of new technology alters environmental exposures. When health externalities are included in return on investment calculations, energy efficiency programs may look more or less attractive than suggested by conventional “energy savings only” estimates. This analysis exploits the quasi-experiment provided by the 2009 Los Angeles (LA) LED streetlight efficiency program to investigate the returns on investments inclusive of an originally estimated health externality. Using the synthetic control method, we find that the LED streetlight program is associated with a lagged increase in breast cancer mortality of 0.479 per 100,000. Inclusive of the effects of LEDs on breast cancer and avoided carbon emissions, the LA LED program provides a −146.2% 10-year return compared to +118.2% when health outcomes and carbon emissions are ignored.
Address Department of Economics, University of New Mexico, 1 UNM Drive, MSC 05 3060, Albuquerque, NM, 87131, USA; bajones(at)unm.edu
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language English Original Title
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ISSN 0095-0696 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 1976
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