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Author Zhao, Z., Zhou, Y., Tan, G., & Li, J.
Title Research progress about the effect and prevention of blue light on eyes Type Journal Article
Year 2018 Publication International Journal of Ophthalmology Abbreviated Journal
Volume 11 Issue (down) 12 Pages 1999-2003
Keywords Vision; Human Health; Review
Abstract In recent years, people have become increasingly attentive to light pollution influences on their eyes. In the visible spectrum, short-wave blue light with wavelength between 415 nm and 455 nm is closely related to eye light damage. This high energy blue light passes through the cornea and lens to the retina causing diseases such as dry eye, cataract, age-related macular degeneration, even stimulating the brain, inhibiting melatonin secretion, and enhancing adrenocortical hormone production, which will destroy the hormonal balance and directly affect sleep quality. Therefore, the effect of Blu-rays on ocular is becoming an important concern for the future. We describe blue light's effects on eye tissues, summarize the research on eye injury and its physical prevention and medical treatment.
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Call Number IDA @ intern @ Serial 2313
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Author Lee, H.
Title Do We Use Artificial Light Appropriately? Type Journal Article
Year 2018 Publication Psychiatry Investigation Abbreviated Journal
Volume 15 Issue (down) 12 Pages
Keywords Commentary; Human Health
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Call Number IDA @ intern @ Serial 2314
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Author Rabaza, O.; Molero-Mesa, E.; Aznar-Dols, F.; Gómez-Lorente, D.
Title Experimental Study of the Levels of Street Lighting Using Aerial Imagery and Energy Efficiency Calculation Type Journal Article
Year 2018 Publication Sustainability Abbreviated Journal Sustainability
Volume 10 Issue (down) 12 Pages 4365
Keywords Remote Sensing; Lighting
Abstract This article describes an innovative method for measuring lighting levels and other lighting parameters through the use of aerial imagery of towns and cities. Combined with electricity consumption data from smart electricity meters, it was possible to measure the energy efficiency of public lighting installations. The results of this study also confirmed that lighting measurements, installation material, luminaire position, and electricity consumption data can be easily integrated into geographic information systems (GIS). The main advantage of this new methodology is that it provides information about lighting installations in large areas in less time than more conventional procedures. It is thus a more effective way of obtaining the data required to calculate the energy efficiency of lighting levels and electricity consumption. There is even the possibility of generating street lighting maps that provide local administrations with up-to-date information regarding the status of public lighting installations in their city. In this way, modifications or improvements can be made to achieve greater energy savings and, if necessary, to correct the distribution or configuration of public lighting systems to make them more efficient and sustainable. This research studied levels of street lighting and calculated the energy efficiency in various streets of Deifontes (Granada), through the use of aerial imagery.
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ISSN 2071-1050 ISBN Medium
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Call Number GFZ @ kyba @ Serial 2773
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Author Czaczkes, T.J.; Bastidas-Urrutia, A.M.; Ghislandi, P.; Tuni, C.
Title Reduced light avoidance in spiders from populations in light-polluted urban environments Type Journal Article
Year 2018 Publication Die Naturwissenschaften Abbreviated Journal Naturwissenschaften
Volume 105 Issue (down) 11-12 Pages 64
Keywords Animals
Abstract Increased urbanisation is leading to a rise in light pollution. Light pollution can disrupt the behaviour and physiology of animals resulting in increased mortality. However, animals may also benefit from artificial light sources, as these may aggregate prey or signal suitable environments. For example, spiders are commonly seen congregating around artificial light sources. Changes in selective pressures engendered by urban environments are driving changes in urban organisms, driving better adaptation to these environments. Here, we ask whether urban populations of the synanthropic spider Steatoda triangulosa show different responses to light compared to rural populations. Egg-sacs from urban and rural populations were collected and incubated in a common garden setting, and the emerging spiderlings tested for light preference. While rural spiderlings avoided light (37% built webs in the light), urban spiderlings were indifferent to it (49% built webs in the light). Reduced light avoidance may benefit spiders through increased prey capture, increased movement into suitable habitats, or due to a release from selection pressure from visually hunting predators which do not enter buildings.
Address Department of Biology, Ludwig-Maximilians University of Munich, Grosshaderner Str. 2, 82152, Planegg-Martinsried, Germany
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ISSN 0028-1042 ISBN Medium
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Notes PMID:30377809 Approved no
Call Number GFZ @ kyba @ Serial 2140
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Author Rahman, S.A.; St Hilaire, M.A.; Gronfier, C.; Chang, A.-M.; Santhi, N.; Czeisler, C.A.; Klerman, E.B.; Lockley, S.W.
Title Functional decoupling of melatonin suppression and circadian phase resetting in humans Type Journal Article
Year 2018 Publication The Journal of Physiology Abbreviated Journal J Physiol
Volume 596 Issue (down) 11 Pages 2147-2157
Keywords Human Health
Abstract KEY POINTS: There is assumed to be a monotonic association between melatonin suppression and circadian phase resetting induced by light exposure. We tested the association between melatonin suppression and phase resetting in humans. Sixteen young healthy participants received nocturnal bright light ( approximately 9500 lux) exposure of continuous or intermittent patterns, and different durations ranging from 12 min to 6.5 h. Intermittent exposure patterns showed significant phase shifts with disproportionately less melatonin suppression. Each and every bright light stimulus in an intermittent exposure pattern induced a similar degree of melatonin suppression, but did not appear to cause an equal magnitude of phase shift. These results suggest that phase shifts and melatonin suppression are functionally independent such that one cannot be used as a proxy measure of the other. ABSTRACT: Continuous experimental light exposures show that, in general, the conditions that produce greater melatonin suppression also produce greater phase shift, leading to the assumption that one can be used as a proxy for the other. We tested this association in 16 healthy individuals who participated in a 9-day inpatient protocol by assessing melatonin suppression and phase resetting in response to a nocturnal light exposure (LE) of different patterns: (i) dim-light control (<3 lux; n = 6) or (ii) two 12-min intermittent bright light pulses (IBL) separated by 36 min of darkness ( approximately 9500 lux; n = 10). We compared these results with historical data from additional LE patterns: (i) dim-light control (<3 lux; n = 11); (ii) single continuous bright light exposure of 12 min (n = 9), 1.0 h (n = 10) or 6.5 h (n = 6); or (iii) an IBL light pattern consisting of six 15-min pulses with 1.0 h dim-light recovery intervals between them during a total of 6.5 h (n = 7). All light exposure groups had significantly greater phase-delay shifts than the dim-light control condition (P < 0.0001). While a monotonic association between melatonin suppression and circadian phase shift was observed, intermittent exposure patterns showed significant phase shifts with disproportionately less melatonin suppression. Each and every IBL stimulus induced a similar degree of melatonin suppression, but did not appear to cause an equal magnitude of phase shift. These results suggest unique specificities in how light-induced phase shifts and melatonin suppression are mediated such that one cannot be used as a proxy measure of the other.
Address Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
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Language English Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 0022-3751 ISBN Medium
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Notes PMID:29707782 Approved no
Call Number GFZ @ kyba @ Serial 1887
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