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Author Van der Westhuyzen, J.G.J., Leuschner, F.W.
Title The effect of age on white light perception Type Journal Article
Year 2018 Publication International Journal of Sustainable Lighting Abbreviated Journal
Volume 20 Issue 2 Pages 29-43
Keywords Vision; Psychology
Abstract The way that persons from different age groups experience “white light” is investigated. Human eye lens transmission changes spectrally with age and this may influence the way that humans from different ages experiences light. Such a difference may be important in industrial and medical environments. Two different age groups, one group younger than 40 years of age and another group older than 50 years of age were subjected to the same “white” definition task.A conventional single-booth setup was used where observers were able to adjust the intensity of four coloured LED’s.Results of the psychophysical test procedure were used to generate specifications of two light sources, as selected by the two age groups. The two age groups selected different light sources when tasked to achieve a “perception” of white. Results show that the older group prefers a source with a colour rendering index number of 89 and the younger group prefers a source with a colour rendering index number of 74. The sources selectedby the two age groups specifycorrelated colour temperature values of 5150 K for the older age group and 6592 K for the younger group.
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Call Number (down) NC @ ehyde3 @ Serial 2065
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Author Bará, S., Lima, R.C.
Title Photons without borders: quantifying light pollution transfer between territories Type Journal Article
Year 2018 Publication International Journal of Sustainable Lighting Abbreviated Journal
Volume 20 Issue 2 Pages 51-61
Keywords Skyglow
Abstract The light pollution levels experienced at any given site generally depend on a wide number of artificial light sources distributed throughout the surrounding territory. Since photons can travel long distances before being scattered by the atmosphere, any effective proposal for reducing local light pollution levels needs an accurate assessment of the relative weight of all intervening light sources, including those located tens or even hundreds of km away. In this paper we describe several ways of quantifying and visualizing these relative weights. Particular emphasis is made on the aggregate contribution of the municipalities, which are -in many regions of the world- the administrative bodies primarily responsible for the planning and maintenance of public outdoor lighting systems.
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Call Number (down) NC @ ehyde3 @ Serial 2066
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Author Penchalaiah, K., Kumari, A.V., Naik, R.S., Deepthi, M.
Title Paederus Dermatitis: A Clinical Study of 200 Cases Type Journal Article
Year 2017 Publication Indian Journal of Applied Research Abbreviated Journal
Volume 7 Issue 4 Pages 65-67
Keywords Human Health
Abstract Introduction: Paederus dermatitis is peculiar irritant dermatitis seen in regions with warm, tropical and subtropical regions, like India, causes significant morbidity and can be misleading in diagnosis. The study was conducted to know the clinical profile of Paederus dermatitis and to create awareness among medical practitioners about this condition. Materials & Methods: All clinically diagnosed cases of Paederus dermatitis were included in the study. Detailed history was taken and a thorough clinical examination was conducted in all the cases. Results: A total of 200 cases comprising of 124 males and 76 females were studied. Morphology of lesions was mainly linear, but zosteriform, kissing and bizarre lesions were also observed. Conclusion: Paederus dermatitis should be included in differential diagnosis while examining erythemato– vesicular lesions of sudden onset, especially on exposed body parts during rainy and post rainy season. Awareness of this condition and its clinical features among the physicians and medical practitioners will prevent misdiagnosis.
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Call Number (down) NC @ ehyde3 @ Serial 2069
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Author Gonzalez, M.M.C.; Golombek, D.A.
Title Editorial: Let There Be Light: Biological Impact of Light Exposure in the Laboratory and the Clinic Type Journal Article
Year 2018 Publication Frontiers in Neurology Abbreviated Journal Front Neurol
Volume 9 Issue Pages
Keywords Commentary; Animals
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Address Department of Science and Technology, Universidad Nacional de Quilmes, Bernal, Argentina
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Language English Summary Language Original Title
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ISSN 1664-2295 ISBN Medium
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Notes PMID:30356725; PMCID:PMC6189324 Approved no
Call Number (down) NC @ ehyde3 @ Serial 2072
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Author Hopkins, G.R.; Gaston, K.J.; Visser, M.E.; Elgar, M.A.; Jones, T.M.
Title Artificial light at night as a driver of evolution across urban-rural landscapes Type Journal Article
Year 2018 Publication Frontiers in Ecology and the Environment Abbreviated Journal Front Ecol Environ
Volume 16 Issue 8 Pages 472-479
Keywords Ecology, Commentary
Abstract Light is fundamental to biological systems, affecting the daily rhythms of bacteria, plants, and animals. Artificial light at night (ALAN), a ubiquitous feature of urbanization, interferes with these rhythms and has the potential to exert strong selection pressures on organisms living in urban environments. ALAN also fragments landscapes, altering the movement of animals into and out of artificially lit habitats. Although research has documented phenotypic and genetic differentiation between urban and rural organisms, ALAN has rarely been considered as a driver of evolution. We argue that the fundamental importance of light to biological systems, and the capacity for ALAN to influence multiple processes contributing to evolution, makes this an important driver of evolutionary change, one with the potential to explain broad patterns of population differentiation across urban–rural landscapes. Integrating ALAN's evolutionary potential into urban ecology is a targeted and powerful approach to understanding the capacity for life to adapt to an increasingly urbanized world.
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ISSN 1540-9295 ISBN Medium
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Notes Approved no
Call Number (down) NC @ ehyde3 @ Serial 2073
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