| Records |
| Author |
Lowden, A.; Ozturk, G.; Reynolds, A.; Bjorvatn, B. |
| Title |
Working Time Society consensus statements: Evidence based interventions using light to improve circadian adaptation to working hours |
Type |
Journal Article |
Year  |
2019 |
Publication |
Industrial Health |
Abbreviated Journal |
Ind Health |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Human Health; Review |
| Abstract |
Interventions and strategies to improve health through the management of circadian (re)adaptation have been explored in the field, and in both human and animal laboratory manipulations of shiftwork. As part of an initiative by the Working Time Society (WTS) and International Committee on Occupational Health (ICOH), this review summarises the literature on the management of circadian (re)adaption using bright light treatment. Recommendations to maximise circadian adaptation are summarised for practitioners based on a variety of shiftwork schedules. In slowly rotating night shift schedules bright light appears most suitable when used in connection with the first three night shifts. These interventions are improved when combined with orange glasses (to block blue-green light exposure) for the commute home. Non-shifting strategies involve a lower dosage of light at night and promoting natural daylight exposure during the day (also recommended for day shifts) in acordance with the phase and amplitude response curves to light in humans. |
| Address |
Department of Global Public Health and Primary Care, University of Bergen, Norway |
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| Language |
English |
Summary Language |
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Edition |
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| ISSN |
0019-8366 |
ISBN |
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Conference |
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| Notes |
PMID:30700675 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2208 |
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| Author |
Tauc, M.J.; Fristrup, K.M.; Repasky, K.S.; Shaw, J.A. |
| Title |
Field demonstration of a wing-beat modulation lidar for the 3D mapping of flying insects |
Type |
Journal Article |
| Year |
2019 |
Publication |
OSA Continuum |
Abbreviated Journal |
OSA Continuum |
| Volume |
2 |
Issue |
2 |
Pages |
332 |
| Keywords |
Instrumentation; Animals |
| Abstract |
We describe a wing-beat modulation lidar system designed for the 3D mapping of flying insects in ecological or entomological studies. To better understand the signals from this instrument, we analyzed simulated signals to identify how they were affected by various imperfections, such as variations in the spacing and amplitude of each individual wing-beat reflection. In addition, a radiometric model was used to estimate signal-to-noise ratio to gain insight into the relationships between the optical system design and insect parameters (e.g., wing size, reflectivity, or diffusivity). |
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Series Issue |
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| ISSN |
2578-7519 |
ISBN |
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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2209 |
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| Author |
Agbaria, S.; Haim, A.; Fares, F.; Zubidat, A.E. |
| Title |
Epigenetic modification in 4T1 mouse breast cancer model by artificial light at night and melatonin – the role of DNA-methyltransferase |
Type |
Journal Article |
| Year |
2019 |
Publication |
Chronobiology International |
Abbreviated Journal |
Chronobiol Int |
| Volume |
in press |
Issue |
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Pages |
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| Keywords |
Animals |
| Abstract |
Currently, one of the most disputed hypotheses regarding breast cancer (BC) development is exposure to short wavelength artificial light at night (ALAN) as multiple studies suggest a possible link between them. This link is suggested to be mediated by nocturnal melatonin suppression that plays an integral role in circadian regulations including cell division. The objective of the research was to evaluate effects of 1 x 30 min/midnight ALAN (134 micro Wcm(-2), 460 nm) with or without nocturnal melatonin supplement on tumor development and epigenetic responses in 4T1 tumor-bearing BALB/c mice. Mice were monitored for body mass (Wb) and tumor volume for 3 weeks and thereafter urine samples were collected at regular intervals for determining daily rhythms of 6-sulfatoxymelatonin (6-SMT). Finally, mice were sacrificed and the tumor, lungs, liver, and spleen were excised for analyzing the total activity of DNA methyltransferases (DNMT) and global DNA methylation (GDM) levels. Mice exposed to ALAN significantly reduced 6-SMT levels and increased Wb, tumor volume, and lung metastasis compared with controls. These effects were diminished by melatonin. The DNMT activity and GDM levels showed tissue-specific response. The enzymatic activity and GDM levels were lower in tumor and liver and higher in spleen and lungs under ALAN compared with controls. Our results suggest that ALAN disrupts the melatonin rhythm and potentially leading to increased BC burden by affecting DNMT activity and GDM levels. These data may also be applicable to early detection and management of BC by monitoring melatonin and GDM levels as early biomarker of ALAN circadian disruption. |
| Address |
b The Israeli Center for Interdisciplinary Research in Chronobiology , University of Haifa , Haifa , Israel; Zubidat3(at)013.net.il |
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Thesis |
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| Publisher |
Taylor & Francis |
Place of Publication |
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| Language |
English |
Summary Language |
English |
Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0742-0528 |
ISBN |
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Medium |
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Conference |
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| Notes |
PMID:30746962 |
Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
2211 |
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| Author |
Zheng, Q.; Weng, Q.; Wang, K. |
| Title |
Developing a new cross-sensor calibration model for DMSP-OLS and Suomi-NPP VIIRS night-light imageries |
Type |
Journal Article |
| Year |
2019 |
Publication |
ISPRS Journal of Photogrammetry and Remote Sensing |
Abbreviated Journal |
ISPRS Journal of Photogrammetry and Remote Sensing |
| Volume |
153 |
Issue |
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Pages |
36-47 |
| Keywords |
Remote Sensing; Instrumentation |
| Abstract |
Night-time light (NTL) data provides a great opportunity to monitor human activities and settlements. Currently, global-scale NTL data are acquired by two satellite sensors, i.e., DMSP-OLS and VIIRS, but the data collected by the satellites are not compatible. To address this issue, we proposed a method for generating long-term and consistent NTL data. First, a logistic model was employed to estimate and smooth the missing DMSP-OLS data. Second, the Lomb-Scargle Periodogram technique was used to statistically examine the presence of seasonality of monthly VIIRS time series. The seasonal effect, noisy and unstable observations in VIIRS were eliminated by the BFAST time-series decomposition algorithm. Then, we proposed a residuals corrected geographically weighted regression model (GWRc) to generate DMSP-like VIIRS data. A consistent NTL time series from 1996 to 2017 was formed by combining the DMSP-OLS and synthetic DMSP-like VIIRS data. Our assessment shows that the proposed GWRc model outperformed existing methods (e.g., power function model), yielding a lower regression RMSE (6.36), a significantly improved pixel-level NTL intensity consistency (SNDI = 82.73, R2 = 0.986) and provided more coherent results when used for urban area extraction. The proposed method can be used to extend NTL time series, and in conjunction with the upcoming yearly VIIRS data and Black Marble daily VIIRS data, it is possible to support long-term NTL-based studies such as monitoring light pollution in ecosystems, and mapping human activities. |
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Series Issue |
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Edition |
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| ISSN |
0924-2716 |
ISBN |
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Conference |
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| Notes |
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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2361 |
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| Author |
Manriquez, P.H.; Jara, M.E.; Diaz, M.I.; Quijon, P.A.; Widdicombe, S.; Pulgar, J.; Manriquez, K.; Quintanilla-Ahumada, D.; Duarte, C. |
| Title |
Artificial light pollution influences behavioral and physiological traits in a keystone predator species, Concholepas concholepas |
Type |
Journal Article |
| Year |
2019 |
Publication |
The Science of the Total Environment |
Abbreviated Journal |
Sci Total Environ |
| Volume |
661 |
Issue |
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Pages |
543-552 |
| Keywords |
Animals |
| Abstract |
Artificial Light At Night (ALAN) is an increasing global problem that, despite being widely recognized in terrestrial systems, has been studied much less in marine habitats. In this study we investigated the effect of ALAN on behavioral and physiological traits of Concholepas concholepas, an important keystone species of the south-eastern Pacific coast. We used juveniles collected in intertidal habitats that had not previously been exposed to ALAN. In the laboratory we exposed them to two treatments: darkness and white LED (Lighting Emitting Diodes) to test for the impacts of ALAN on prey-searching behavior, self-righting time and metabolism. In the field, the distribution of juveniles was observed during daylight-hours to determine whether C. concholepas preferred shaded or illuminated microhabitats. Moreover, we compared the abundance of juveniles collected during day- and night-time hours. The laboratory experiments demonstrated that juveniles of C. concholepas seek out and choose their prey more efficiently in darkened areas. White LED illuminated conditions increased righting times and metabolism. Field surveys indicated that, during daylight hours, juveniles were more abundant in shaded micro-habitats than in illuminated ones. However, during darkness hours, individuals were not seen to aggregate in any particular microhabitats. We conclude that the exposure to ALAN might disrupt important behavioral and physiological traits of small juveniles in this species which, as a mechanism to avoid visual predators, are mainly active at night. It follows that ALAN in coastal areas might modify the entire community structure of intertidal habitats by altering the behavior of this keystone species. |
| Address |
Departamento de Ecologia y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile |
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Place of Publication |
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| Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0048-9697 |
ISBN |
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Conference |
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| Notes |
PMID:30682607 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2213 |
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