| Records |
| Author |
Eisenstein, M. |
| Title |
Chronobiology: stepping out of time |
Type |
Journal Article |
| Year |
2013 |
Publication |
Nature |
Abbreviated Journal |
Nature |
Volume  |
497 |
Issue |
7450 |
Pages |
S10-2 |
| Keywords |
Human Health; Animals; Benzofurans/therapeutic use; CLOCK Proteins/genetics/metabolism; Circadian Rhythm/genetics/*physiology; Cyclopropanes/therapeutic use; Efficiency/physiology; Humans; Melatonin/agonists/metabolism; Obesity/metabolism; Sleep/genetics/*physiology; Suprachiasmatic Nucleus/metabolism |
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English |
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| ISSN |
0028-0836 |
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| Notes |
PMID:23698500 |
Approved |
no |
| Call Number |
LoNNe @ christopher.kyba @ |
Serial |
500 |
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| Author |
Owens, B. |
| Title |
Obesity: heavy sleepers |
Type |
Journal Article |
| Year |
2013 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
497 |
Issue |
7450 |
Pages |
S8-9 |
| Keywords |
Human Health; Animals; Body Mass Index; CLOCK Proteins/genetics/metabolism; Circadian Rhythm/physiology; Energy Metabolism/*physiology; Ghrelin/metabolism; Humans; Insulin Resistance/physiology; Leptin/metabolism; Male; Mice; Obesity/*physiopathology; Satiety Response/physiology; Sleep/*physiology; Suprachiasmatic Nucleus/physiology; Time Factors; Weight Gain/physiology; Weight Loss/physiology |
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0028-0836 |
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| Notes |
PMID:23698508 |
Approved |
no |
| Call Number |
LoNNe @ christopher.kyba @ |
Serial |
503 |
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| Author |
Konkal, P.; Ganesh, C.B. |
| Title |
Exposure to low or high light intensity affects pituitary-testicular activity in the fish Oreochromis mossambicus |
Type |
Journal Article |
| Year |
2018 |
Publication |
Aquaculture |
Abbreviated Journal |
Aquaculture |
| Volume |
497 |
Issue |
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Pages |
109-116 |
| Keywords |
Animals |
| Abstract |
Light is an important factor for the successful reproduction of most fish. In this investigation, effect of different light intensities on pituitary-testis axis was studied for a period of 21 days, under normal photoperiodic regime in the tilapia Oreochromis mossambicus. The mean numbers of spermatogonia (Sg), primary spermatocytes (Ps), secondary spermatocytes (Ss), early spermatids (Est) and late spermatids (Lst) did not show significant difference between fish exposed to moderate light intensity (MLI) and initial controls or controls, whereas the mean numbers of Sg were significantly lower in fish exposed to low light intensity (LLI) compared to those of initial controls, controls and MLI groups. However, the mean numbers of Ps, Ss, Est and Lst were significantly lower in fish exposed to LLI and high light intensity (HLI) compared to those of other experimental groups. Furthermore, in the pituitary gland, weakly immunoreactive luteinizing hormone (LH) secreting cells were observed in the proximal pars distalis (PPD) region in fish exposed to LLI and HLI in contrast to the intense immunolabelling of these cells in initial controls, controls and MLI groups. The androgen receptors showed diminished immunoreactivity in the Sertoli cells along the seminiferous lobules of the testis in fish exposed to LLI and HLI, whereas the strongly immunoreactive androgen receptors were observed in the Sertoli cells in initial controls, controls and MLI groups. Taken together, these results indicate that long-term exposure to low or high light intensity light suppresses spermatogenetic process and that this inhibition is due to reduced secretory activity of LH cells in the pituitary gland and androgen secretion in the testis of the fish O. mossambicus. |
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0044-8486 |
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no |
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GFZ @ kyba @ |
Serial |
1974 |
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| Author |
Kocifaj, M.; Kómar, L.; Lamphar, H.; Wallner, S. |
| Title |
Are population-based models advantageous in estimating the lumen outputs from light-pollution sources? |
Type |
Journal Article |
| Year |
2020 |
Publication |
Monthly Notices of the Royal Astronomical Society: Letters |
Abbreviated Journal |
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| Volume |
496 |
Issue |
1 |
Pages |
L138-L141 |
| Keywords |
Remote Sensing |
| Abstract |
The total lumen output (TLO) from ground-based artificial light sources is required in a wide range of light-pollution models currently in use. No realistic assessment of diffuse light levels in the nocturnal environment is possible if the information on TLO is missing. Traditional approaches to skyglow modelling, if no lighting inventory is available, foresee to estimate TLO based on population and average amount of lumens per capita. However, we show in this letter that a model based on the area of artificially lit surfaces can reduce uncertainties in estimating TLO by 25 per cent for compact urban areas of defined centres and autonomous character and even 50 per cent for diffuse cities with small satellite towns interacting closely with the main city. The new model could be of great significance to the community of light-pollution researchers, especially astronomers, physicists, and modellers who use TLO routinely in light-pollution characterization. |
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Edition |
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1745-3925 |
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no |
| Call Number |
UP @ altintas1 @ |
Serial |
3181 |
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| Author |
Kocifaj, M.; Bará, S. |
| Title |
Aerosol characterization using satellite remote sensing of light pollution sources at night |
Type |
Journal Article |
| Year |
2020 |
Publication |
Monthly Notices of the Royal Astronomical Society: Letters |
Abbreviated Journal |
MNRAS |
| Volume |
495 |
Issue |
1 |
Pages |
L76-L80 |
| Keywords |
Skyglow; Radiative transfer; Light scattering; Aerosols |
| Abstract |
A demanding challenge in atmospheric research is the night-time characterization of aerosols using passive techniques, that is, by extracting information from scattered light that has not been emitted by the observer. Satellite observations of artificial night-time lights have been used to retrieve some basic integral parameters, like the aerosol optical depth. However, a thorough analysis of the scattering processes allows one to obtain substantially more detailed information on aerosol properties. In this letter, we demonstrate a practicable approach for determining the aerosol particle size number distribution function in the air column, based on the measurement of the angular radiance distribution of the scattered light emitted by night- time lights of cities and towns, recorded from low Earth orbit. The method is self-calibrating and does not require the knowledge of the absolute city emissions. The input radiance data are readily available from several spaceborne platforms, like the VIIRS-DNB radiometer onboard the Suomi-NPP satellite. |
| Address |
Faculty of Mathematics, Physics, and Informatics, Comenius University, Mlynska Dolina, 842 48 Bratislava, Slovakia; Miroslav.Kocifaj(at)savba.sk |
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OUP |
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English |
Summary Language |
English |
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1745-3925 |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
2910 |
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