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Author Spitschan, M.; Cajochen, C. url  doi
openurl 
  Title (up) Binocular facilitation in light-mediated melatonin suppression? Type Journal Article
  Year 2019 Publication Journal of Pineal Research Abbreviated Journal J Pineal Res  
  Volume 67 Issue 4 Pages e12602  
  Keywords Human Health; Vision; melatonin suppression; monocular; binocular  
  Abstract Astronomers and pilots have known for a long time that closing one eye can preserve vision in that eye while going from dark to light and back. Recently, it was reported that viewing a smartphone monocularly in an otherwise dark room can lead to transient, but strong reductions in retinal sensitivity in that eye (Alim-Marvasti, Bi, Mahroo, Barbur, & Plant, 2016). But seeing detail is not the only function that is mediated by the retina. Here, we address the question whether light exposure to one eye only (monocular) has tangible effects on the suppression of melatonin by light, relative to both eyes open (binocular).  
  Address Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Basel, Switzerland  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0742-3098 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:31361918 Approved no  
  Call Number GFZ @ kyba @ Serial 2595  
Permanent link to this record
 

 
Author Dutcher, W. url  doi
openurl 
  Title (up) Bird Notes from Long Island, N. Y Type Journal Article
  Year 1884 Publication The Auk Abbreviated Journal The Auk  
  Volume 1 Issue 2 Pages 174-179  
  Keywords Animals  
  Abstract For the purpose of determining the date of migration, the species migrating, and the numbers that are destroyed by striking a light house during a spring and fall migration, I have for the past two years received all the birds killed by flying against Fire Island Light.  
  Address  
  Corporate Author Thesis  
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  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0004-8038 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2290  
Permanent link to this record
 

 
Author Bará, S. url  doi
openurl 
  Title (up) Black-body luminance and magnitudes per square arcsecond in the Johnson-Cousins BVR photometric bands Type Journal Article
  Year 2019 Publication Photonics Letters of Poland Abbreviated Journal Photon. Lett. Pl.  
  Volume 11 Issue 3 Pages 63  
  Keywords Skyglow; night sky brightness; luminance; photometric  
  Abstract A relevant amount of light pollution studies deal with the unwanted visual effects of artificial light at night, including the anthropogenic luminance of the sky that hinders the observation of the celestial bodies which are a main target of ground-based astrophysical research, and a key asset of the intangible heritage of humankind. Most quantitative measurements and numerical models, however, evaluate the anthropogenic sky radiance in any of the standard Johnson-Cousins UBVRI photometric bands, generally in the V one. Since the Johnson-Cousins V band is not identical with the visual CIE V-lambda used to assess luminance, the conversion between these two photometric systems turns out to be spectrum-dependent. Given its interest for practical applications, in this Letter we provide the framework to perform this conversion and the transformation constants for black-body spectra of different absolute temperatures.  
  Address Dept. Física Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia  
  Corporate Author Thesis  
  Publisher Photonics Society of Poland Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2080-2242 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 2685  
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Author Gallaway, T.; Olsen, R.N.; Mitchell, D.M. url  doi
openurl 
  Title (up) Blinded by the Light: Economic Analysis of Severe Light Pollution Type Journal Article
  Year 2013 Publication Journal of Economic Insight Abbreviated Journal J Econ Insight  
  Volume 39 Issue 1 Pages 45-63  
  Keywords Economics; light pollution  
  Abstract This paper examines severe light pollution such as commonly found in large urban areas. Light pollution is the unintended negative consequences of poorly designed and injudiciously used artificial lighting. Light pollution generates significant costs including wasted energy and damage to human health, wildlife, recreation, and the beauty of the night sky. Typically, light-pollution models emphasize population density and ignore economic factors. Economic analysis of the issue has been singularly limited. Previous economic research has focused on widespread, but very low levels of light pollution. This paper makes a unique contribution by analyzing economic factors of severe light pollution. The paper utilizes economic data from the World Bank and unique remote sensing data for 184 countries to quantify the economic causes of severe light pollution. Fractional logit models confirm the importance of population and economic factors alike.  
  Address Department of Economics, Missouri State University; TerrelGallaway(at)missouristate.edu  
  Corporate Author Thesis  
  Publisher Missouri Valley Economic Association Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0361-6576 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 2338  
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Author Mortazavi, S.A.R., Parhoodeh, S., Hosseini, M.A., Arabi, H., Malakooti, H., Nematollahi, S., Mortazavi, G., Darvish, L., Mortazavi, S.M.J. url  doi
openurl 
  Title (up) Blocking Short-Wavelength Component of the Visible Light Emitted by Smartphones’ Screens Improves Human Sleep Quality Type Journal Article
  Year 2018 Publication Journal of Biomedical Physics and Engineering Abbreviated Journal  
  Volume 8 Issue 4 Pages 375-380  
  Keywords Human Health  
  Abstract Background: It has been shown that short-wavelength blue component of the visible light spectrum can alter the circadian rhythm and suppress the level of melatonin hormone. The short-wavelength light emitted by smartphones’ screens can affect the sleep quality of the people who use these devices at night through suppression of melatonin.

Objectives: In this study, we examined the effects of covering the screens of smartphones with different filters (changing the effective wavelength of the light) on sleep delay time in 43 healthy students.

Materials and Methods: Volunteer students were asked to go to bed at 23:00 and to use their mobile phones in bed for watching a natural life documentary movie for 60 minutes. No filter was used for one night while amber and blue filters were used for other 2 nights. Photospectrometry method was used to determine the output spectrum of the light passing through the filters used for covering the screens of the mobile phones. The order for utilizing amber or blue filters or using no filter was selected randomly. After 1 hour, the participants were asked to record their sleep delay time measured by a modified form of sleep time record sheet.

Results: The mean sleep delay time for the “no-filter” night was 20.84±9.15 minutes, while the sleep delay times for the nights with amber and blue filters were 15.26±1.04 and 26.33±1.59 minutes, respectively.

Conclusion: The findings obtained in this study support this hypothesis that blue light possibly suppresses the secretion of melatonin more than the longer wavelengths of the visible light spectrum. Using amber filter in this study significantly improved the sleep quality. Altogether, these findings lead us to this conclusion that blocking the short-wavelength component of the light emitted by smartphones’ screens improves human sleep.
 
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number NC @ ehyde3 @ Serial 2077  
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