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Degree-Light-Free Graphs and Hamiltonian Cycles
Graphs and Combinatorics, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guantao Chen +2 more
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LIGHT AND THE CONTROL OF THE OESTROUS CYCLE IN THE FERRET
Journal of Endocrinology, 1967SUMMARY The effect of exposure to long-day conditions, begun at different times during the summer and autumn, on the timing of oestrus in the ferret has been studied. When ferrets were transferred to 16 hr. days in July or August, oestrus set in very rapidly or was inhibited, but when ferrets were subjected to prolonged illumination later in ...
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Nocturnal Light Effects on Menstrual Cycle Length
The Journal of Alternative and Complementary Medicine, 1997In previous University of California, San Diego (UCSD) studies, nocturnal illumination shortened menstrual cycles that were longer than 33 days. The studies reported here extend the previous findings, confining the illumination to the sleep period.Two light levels (235 to 250 lux and less than 1 lux) and 2 modes of light delivery (lighted sleep mask ...
K M, Rex +3 more
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The Impact of Constant Light on the Estrous Cycle of the Rat*
Endocrinology, 1980The initial effects of constant bright light on the events of the rat estrous cycle were monitored in order to examine the interdependence of the hormonal and behavioral rhythms which comprise the cycle. Females exposed to constant bright light for only one cycle either failed to ovulate or showed a delay in the hormonal and behavioral events of the ...
C S, Campbell, N B, Schwartz
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Making ultrafast cycles of light
Science, 2018Ultrafast Optics The ability to generate coherent optical frequency combs has had a huge impact on precision metrology, imaging, and sensing applications. On closer inspection, the broadband “white light” generated through the interaction of femtosecond mode-locked laser pulses is composed of billions or trillions of precisely spaced wavelengths of ...
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Switch-on of Ultrastrong Light-Matter Interaction Faster than a Cycle of Light
Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, 2009Intersubband cavity polaritons in a quantum well waveguide structure are photogenerated by 12-fs near-infrared pulses. Multi-THz transients trace the non-adiabatic switch-on of ultrastrong light-matter coupling and the conversion of bare photons into cavity polaritons.
AA Anappara +7 more
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Melatonin, Light and Circadian Cycles
1989Abstract : The body's circadian rhythms affect many aspects of human psychology, physiology, and performance. Melatonin, a hormone secreted by the pineal, is an important element of human circadian rhythmicity. Melatonin is normally at a low level during the day, with a pulse of secretion at night. The timing of melatonin secretion is controlled by the
Paul Naitoh +2 more
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British Poultry Science, 1985
Three lighting treatments were given to laying hens, for which the bright and dim light of 28-h ahemeral light cycles was provided by incandescent (tungsten filament) lamps only or by combinations of tubular fluorescent or compact gas-discharge lamps with incandescent lamps.
Rose, S. P., Bell, M., Michie, W.
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Three lighting treatments were given to laying hens, for which the bright and dim light of 28-h ahemeral light cycles was provided by incandescent (tungsten filament) lamps only or by combinations of tubular fluorescent or compact gas-discharge lamps with incandescent lamps.
Rose, S. P., Bell, M., Michie, W.
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The xanthophyll cycle in diatom Phaeodactylum tricornutum in response to light stress
Plant Physiology and Biochemistry, 2020Paulina Kuczynska +2 more
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