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Author  |
Jou, J.-H.; Hsieh, C.-Y.; Tseng, J.-R.; Peng, S.-H.; Jou, Y.-C.; Hong, J.H.; Shen, S.-M.; Tang, M.-C.; Chen, P.-C.; Lin, C.-H. | ||||
| Title | Candle Light-Style Organic Light-Emitting Diodes | Type | Journal Article | ||
| Year | 2013 | Publication | Advanced Functional Materials | Abbreviated Journal | Adv. Funct. Mater. |
| Volume | 23 | Issue | 21 | Pages | 2750-2757 |
| Keywords | organic light emitting diodes; candle light; firelight; OLED; CRI; color rendition | ||||
| Abstract | In response to the call for a physiologically-friendly light at night that shows low color temperature, a candle light-style organic light emitting diode (OLED) is developed with a color temperature as low as 1900 K, a color rendering index (CRI) as high as 93, and an efficacy at least two times that of incandescent bulbs. In addition, the device has a 80% resemblance in luminance spectrum to that of a candle. Most importantly, the sensationally warm candle light-style emission is driven by electricity in lieu of the energy-wasting and greenhouse gas emitting hydrocarbon-burning candles invented 5000 years ago. This candle light-style OLED may serve as a safe measure for illumination at night. Moreover, it has a high color rendering index with a decent efficiency. | ||||
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| ISSN | 1616301X | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | IDA @ john @ | Serial | 284 | ||
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| Author |
Juntunen, E.; Tetri, E.; Tapaninen, O.; Yrjänä S.; Kondratyev, V; . Sitomaniemi, A.; Siirtola, H.; Sarjanoja, E.M.; Aikio, J.; Heikkinen, V | ||||
| Title | A smart LED luminaire for energy savings in pedestrian road lighting. | Type | Journal Article | ||
| Year | 2013 | Publication | Lighting Research and Technology | Abbreviated Journal | |
| Volume | 47 | Issue | 1 | Pages | 103-115 |
| Keywords | Lighting | ||||
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| Notes | Approved | no | |||
| Call Number | LoNNe @ kagoburian @ | Serial | 639 | ||
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| Author |
Kamrowski, R.L.; Limpus, C.; Jones, R.; Anderson, S.; Hamann, M. | ||||
| Title | Temporal changes in artificial light exposure of marine turtle nesting areas | Type | Journal Article | ||
| Year | 2013 | Publication | Global Change Biology | Abbreviated Journal | Glob Chang Biol |
| Volume | 20 | Issue | 8 | Pages | 2437-2449 |
| Keywords | GIS analysis; artificial light; conservation planning; marine turtles; population resilience; temporal change | ||||
| Abstract | Artificial light at night poses a significant threat to multiple taxa across the globe. In coastal regions, artificial lighting close to marine turtle nesting beaches is disruptive to their breeding success. Prioritizing effective management of light pollution requires an understanding of how the light exposure of nesting areas changes over time in response to changing temporal and spatial distributions of coastal development. We analyzed multitemporal, satellite night-light data, in combination with linear mixed model analysis, to determine broadscale changes in artificial light exposure at Australian marine turtle nesting areas between 1993 and 2010. We found seven marine turtle management units (MU), from five species, have experienced significant increases in light exposure over time, with flatback turtles nesting in east Australia experiencing the fastest increases. The remaining 12 MUs showed no significant change in light exposure. Unchanging MUs included those previously identified as having high exposure to light pollution (located in western Australia and southern Queensland), indicating that turtles in these areas have been potentially exposed to high light levels since at least the early nineties. At a finer geographic scale (within-MU), nine MUs contained nesting areas with significant increases in light exposure. These nesting areas predominantly occurred close to heavily industrialized coastal areas, thus emphasizing the importance of rigorous light management in industry. Within all MUs, nesting areas existed where light levels were extremely low and/or had not significantly increased since 1993. With continued coastal development, nesting females may shift to these darker/unchanging 'buffer' areas in the future. This is valuable information that informs our understanding of the capacity and resilience of marine turtles faced with coastal development: an understanding that is essential for effective marine turtle conservation. | ||||
| Address | School of Earth and Environmental Sciences, James Cook University, Townsville, QLD, 4811, Australia | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1354-1013 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:24353164 | Approved | no | ||
| Call Number | IDA @ john @ | Serial | 73 | ||
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| Author |
Kantermann, T. | ||||
| Title | Circadian biology: sleep-styles shaped by light-styles | Type | Journal Article | ||
| Year | 2013 | Publication | Current Biology : CB | Abbreviated Journal | Curr Biol |
| Volume | 23 | Issue | 16 | Pages | R689-90 |
| Keywords | Human Health; Circadian Clocks/*radiation effects; Female; Humans; *Lighting; Male; *Photoperiod; *Sunlight | ||||
| Abstract | Light and darkness are the main time cues synchronising all biological clocks to the external environment. This little understood evolutionary phenomenon is called circadian entrainment. A new study illuminates our understanding of how modern light- and lifestyles compromise circadian entrainment and impact our biological clocks. | ||||
| Address | Chronobiology – Centre for Behaviour and Neurosciences, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands. thomas@kantermann.de | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0960-9822 | ISBN | Medium | ||
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| Notes | PMID:23968925 | Approved | no | ||
| Call Number | LoNNe @ christopher.kyba @ | Serial | 501 | ||
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| Author |
Kayaba, M.; Iwayama, K.; Ogata, H.; Seya, Y.; Tokuyama, K.; Satoh, M. | ||||
| Title | Drowsiness and low energy metabolism in the following morning induced by nocturnal blue light exposure | Type | Journal Article | ||
| Year | 2013 | Publication | Sleep Medicine | Abbreviated Journal | Sleep Medicine |
| Volume | 14 | Issue | Pages | e166-e167 | |
| Keywords | blue light; light exposure; light at night; circadian disruption; drowsiness; melatonin; metabolism; sleep | ||||
| Abstract | Introduction Evening light exposure debilitates the circadian rhythm and elicits sleep disturbance. Blue light peak wavelengths, around 460 nm, suppress melatonin secretion via the non-image-forming system. The effects of nocturnal blue light exposure on sleep have been reported to be specific but rather small (Münch, 2008). This study was designed to assess the effect of nocturnal blue light exposure on sleep and energy metabolism until noon the next day. Materials and methods Nine healthy male volunteers aged between 21 and 25 participated in this study which had a balanced cross-over design with intrasubject comparisons. After 2 h dark adaptation, the subjects were exposed to blue light or no light for 2 h. The peak wavelength of the blue LED was 465 nm, and the horizontal irradiance of the blue light at the height of eye was at 7.02fÊW/cm2. Sleep was recorded polysomnographically, and energy metabolism was measured with a whole body indirect calorimeter. Results There were no significant differences in sleep architecture and energy metabolism during the night. However, dozing (stages 1 and 2) was significantly higher (26.0 < 29.4 vs 6.3 < 8.1 min, P < 0.05), and energy expenditure, O2 consumption, CO2 production and the thermic effect of food (increase in energy expenditure after breakfast) were significantly lower the following morning in the blue light exposure subjects. Conclusion Contrary to our expectation, sleep architecture and energy metabolism during sleep were not affected by evening exposure to blue light. It might be due to our milder intervention by which subjects in a sitting position did not gaze at the light source set on the ceiling, while the subjects in previous studies directly received brighter light via custom built goggles (Cajochen, 2005; Münch, 2008) or gazed at a light source under the influence of mydriatic agents to dilate pupils (Brainard, 2001). New findings of the present study were that dozing (stages 1 and 2) was significantly increased, and energy metabolism was significantly lower the following morning in blue light exposed subjects. This suggests that modulation of the circadian rhythm is affected by nocturnal blue light exposure and the effect continues in the following daytime even if the intervention was mild. |
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| Address | University of Tsukuba, Graduate School of Comprehensive Human Sciences, Japan | ||||
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| ISSN | 1389-9457 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | IDA @ john @ | Serial | 349 | ||
| Permanent link to this record | |||||