| Records |
Author  |
Aarts, M.P.J.; Hartmeyer, S.L.; Morsink, K.; Kort, H.S.M.; de Kort, Y.A.W. |
| Title |
Can Special Light Glasses Reduce Sleepiness and Improve Sleep of Nightshift Workers? A Placebo-Controlled Explorative Field Study |
Type |
Journal Article |
| Year |
2020 |
Publication |
Clocks & Sleep |
Abbreviated Journal |
Clocks & Sleep |
| Volume |
2 |
Issue |
2 |
Pages |
225-245 |
| Keywords |
Human Health |
| Abstract |
Nightshift workers go against the natural sleep–wake rhythm. Light can shift the circadian clock but can also induce acute alertness. This placebo-controlled exploratory field study examined the effectiveness of light glasses to improve alertness while reducing the sleep complaints of hospital nurses working nightshifts. In a crossover within-subjects design, 23 nurses participated, using treatment glasses and placebo glasses. Sleepiness and sleep parameters were measured. A linear mixed model analysis on sleepiness revealed no significant main effect of the light intervention. An interaction effect was found indicating that under the placebo condition, sleepiness was significantly higher on the first nightshift than on the last night, while under the treatment condition, sleepiness remained stable across nightshift sessions. Sleepiness during the commute home also showed a significant interaction effect, demonstrating that after the first nightshift, driver sleepiness was higher for placebo than for treatment. Subjective sleep quality showed a negative main effect of treatment vs. placebo, particularly after the first nightshift. In retrospect, both types of light glasses were self-rated as effective. The use of light glasses during the nightshift may help to reduce driver sleepiness during the commute home, which is relevant, as all participants drove home by car or (motor) bike. |
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| ISSN |
2624-5175 |
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| Call Number |
GFZ @ kyba @ |
Serial |
2977 |
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| Author |
Abay, K.A.; Amare, M. |
| Title |
Night light intensity and women's body weight: Evidence from Nigeria |
Type |
Journal Article |
| Year |
2018 |
Publication |
Economics and Human Biology |
Abbreviated Journal |
Econ Hum Biol |
| Volume |
31 |
Issue |
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Pages |
238-248 |
| Keywords |
Remote Sensing; Human Health; Adolescent; Adult; Body Mass Index; *Body Weight; Cross-Sectional Studies; Female; Health Surveys; Humans; Lighting/*statistics & numerical data; Middle Aged; Nigeria/epidemiology; Obesity/epidemiology; Overweight/*epidemiology; Prevalence; *Urbanization; Young Adult; *Bmi; *Nigeria; *Night light; *Obesity; *Overweight; *Urbanization |
| Abstract |
The prevalence of overweight and obesity are increasing in many African countries and hence becoming regional public health challenges. We employ satellite-based night light intensity data as a proxy for urbanization to investigate the relationship between urbanization and women's body weight. We use two rounds of the Demographic and Health Survey data from Nigeria. We employ both nonparametric and parametric estimation approaches that exploit both the cross-sectional and longitudinal variations in night light intensities. Our empirical analysis reveals nonlinear relationships between night light intensity and women's body weight measures. Doubling the sample's average level of night light intensity is associated with up to a ten percentage point increase in the probability of overweight. However, despite the generally positive relationship between night light intensity and women's body weight, the strength of the relationship varies across the assorted stages of night light intensity. Early stages of night light intensity are not significantly associated with women's body weight, while higher stages of nightlight intensities are associated with higher rates of overweight and obesity. Given that night lights are strong predictors of urbanization and related economic activities, our results hint at nonlinear relationships between various stages of urbanization and women's body weight. |
| Address |
International Food Policy Research Institute (IFPRI), USA. Electronic address: M.Amare@cgiar.org |
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English |
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| ISSN |
1570-677X |
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| Notes |
PMID:30312904 |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
2714 |
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| Author |
Abbott, S.M.; Malkani, R.G.; Zee, P.C. |
| Title |
Circadian disruption and human health: A bidirectional relationship |
Type |
Journal Article |
| Year |
2018 |
Publication |
The European Journal of Neuroscience |
Abbreviated Journal |
Eur J Neurosci |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Human Health; Review |
| Abstract |
Circadian rhythm disorders have been classically associated with disorders of abnormal timing of the sleep-wake cycle, however circadian dysfunction can play a role in a wide range of pathology, ranging from the increased risk for cardiometabolic disease and malignancy in shift workers, prompting the need for a new field focused on the larger concept of circadian medicine. The relationship between circadian disruption and human health is bidirectional, with changes in circadian amplitude often preceding the classical symptoms of neurodegenerative disorders. As our understanding of the importance of circadian dysfunction in disease grows, we need to develop better clinical techniques for identifying circadian rhythms and also develop circadian based strategies for disease management. Overall this review highlights the need to bring the concept of time to all aspects of medicine, emphasizing circadian medicine as a prime example of both personalized and precision medicine. |
| Address |
Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois |
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English |
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0953-816X |
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| Notes |
PMID:30549337 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2154 |
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| Author |
Aboushelib, M.F.; Abozaid, A.A.; Nawar, S.; Hendy, Y.H.M.; Morcos, A.B. |
| Title |
Preliminary site selection for an observatory in the Egyptian Eastern Desert |
Type |
Journal Article |
| Year |
2019 |
Publication |
Astrophysics and Space Science |
Abbreviated Journal |
Astrophys Space Sci |
| Volume |
364 |
Issue |
10 |
Pages |
163 |
| Keywords |
Skyglow; Astronomy; Observatory; Egypt; Africa; Sky Quality Meter |
| Abstract |
This work aims for choosing preliminary sites that can be candidates for a new astronomical observatory that will replace the Kottamia observatory. The candidate sites have been selected to be investigated after proposing a few criteria. Concerning light pollution and elevation of the sites as the main factors, we chose the candidate sites depending on the zenith sky brightness and the elevation. The night sky brightness has been measured using a Sky Quality Meter at different altitude degrees and the values of the zenith sky brightness were compared to those of different observatory sites. Our night sky brightness observations were found to be in agreement with the satellite’s data and comparable to those of dark sites, with average values of 22.07, 22.03, 21.57 and 21.58 magSQM/arcsec2. We also have obtained the Aerosol Optical Depth (AOD) and extinction coefficient due to the aerosol for the candidate sites using satellite data (Terra/MODIS). |
| Address |
National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt; m.f.aboushelib(at)nriag.sci.eg |
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Springer |
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English |
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English |
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0004-640X |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
2690 |
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| Author |
Aceituno, J.; Sánchez, S.F.; Aceituno, F.J.; GaladÃ-EnrÃquez, D.; Negro, J.J.; Soriguer, R.C.; Gomez, G.S. |
| Title |
An All-Sky Transmission Monitor: ASTMON |
Type |
Journal Article |
| Year |
2011 |
Publication |
Publications of the Astronomical Society of the Pacific |
Abbreviated Journal |
Publications of the Astronomical Society of the Pacific |
| Volume |
123 |
Issue |
907 |
Pages |
1076-1086 |
| Keywords |
monitoring; light at night; light pollution; skyglow |
| Abstract |
We present here the All-Sky Transmission Monitor (ASTMON), designed to perform a continuous monitoring of the surface brightness of the complete night sky in several bands. The data acquired are used to derive, in addition, a subsequent map of the multiband atmospheric extinction at any location in the sky and a map of the cloud coverage. The instrument has been manufactured to withstand extreme weather conditions and to remain operative. Designed to be fully robotic, it is ideal to be installed outdoors as a permanent monitoring station. The preliminary results based on two of the currently operative units (at Doñana National Park, Huelva, and at the Calar Alto Observatory, AlmerÃa, Spain) are presented here. The parameters derived using ASTMON are in good agreement with those previously reported, which illustrates the validity of the design and the accuracy of the manufacturing. The information provided by this instrument will be presented in forthcoming articles, once we have accumulated a statistically significant amount of data. |
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| ISSN |
0004-6280 |
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no |
| Call Number |
IDA @ john @ |
Serial |
195 |
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