نتایج جستجو برای: night light

تعداد نتایج: 426123  

ژورنال: طب کار 2018

Objective: In this study we assessed the effect of bright light emitted by light box on fatigue, and sleepiness in nurses. Methods: 44 healthy female shift work nurses were allocated into two groups of intervention and control. In the first stage, bright light was emitted to the nurses in the intervention group by the light box, and bright light was not emitted to the control group. In the nex...

Journal: :Plant & cell physiology 2015
Takeshi Mizuno Miki Kitayama Chieko Takayama Takafumi Yamashino

Life cycle adaptation to seasonal variation in photoperiod and temperature is a major determinant of ecological success of widespread domestication of Arabidopsis thaliana. The circadian clock plays a role in the underlying mechanism for adaptation. Nevertheless, the mechanism by which the circadian clock tracks seasonal changes in photoperiod and temperature is a longstanding subject of resear...

2013
Sunil Kumar Pal Magdalena Liput Maria Piques Hirofumi Ishihara Toshihiro Obata Marina C.M. Martins Ronan Sulpice Joost T. van Dongen Alisdair R. Fernie Umesh Prasad Yadav John E. Lunn Björn Usadel

Growth is driven by newly fixed carbon in the light, but at night it depends on reserves, like starch, that are laid down in the light. Unless plants coordinate their growth with diurnal changes in the carbon supply, they will experience acute carbon starvation during the night. Protein synthesis represents a major component of cellular growth. Polysome loading was investigated during the diurn...

Journal: :Plant physiology 2013
Sunil Kumar Pal Magdalena Liput Maria Piques Hirofumi Ishihara Toshihiro Obata Marina C M Martins Ronan Sulpice Joost T van Dongen Alisdair R Fernie Umesh Prasad Yadav John E Lunn Björn Usadel Mark Stitt

Growth is driven by newly fixed carbon in the light, but at night it depends on reserves, like starch, that are laid down in the light. Unless plants coordinate their growth with diurnal changes in the carbon supply, they will experience acute carbon starvation during the night. Protein synthesis represents a major component of cellular growth. Polysome loading was investigated during the diurn...

2017
Longqing Shi Liette Vasseur Huoshui Huang Zhaohua Zeng Guiping Hu Xin Liu Minsheng You

Insect behaviors are often influenced by light conditions including photoperiod, light intensity, and wavelength. Understanding pest insect responses to changing light conditions may help with developing alternative strategies for pest control. Little is known about the behavioral responses of leafhoppers (Hemiptera: Cicadellidae) to light conditions. The behavior of the tea green leafhopper, E...

1999
ERIN K. BAEHR LOUIS F. FOGG CHARMANE I. EASTMAN

Baehr, Erin K., Louis F. Fogg, and Charmane I. Eastman. Intermittent bright light and exercise to entrain human circadian rhythms to night work. Am. J. Physiol. 277 (Regulatory Integrative Comp. Physiol. 46): R1598–R1604, 1999.—Bright light can phase shift human circadian rhythms, and recent studies have suggested that exercise can also produce phase shifts in humans. However, few studies have ...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 1998
Alena Sumová Helena Illnerová

To date, photic entrainment of the mammalian circadian system has been studied by following phase shifts of overt rhythms in the periphery governed by a circadian pacemaker located in the suprachiasmatic nucleus (SCN). The present study follows for the first time photic resetting of intrinsic rhythmicity of the SCN itself. Rats maintained under either a shorter photoperiod, with 12 h of light a...

2015
Xiaoni Cai Kunshan Gao Franck Chauvat

While the diazotrophic cyanobacterium Trichodesmium is known to display inverse diurnal performances of photosynthesis and N2 fixation, such a phenomenon has not been well documented under different day-night (L-D) cycles and different levels of light dose exposed to the cells. Here, we show differences in growth, N2 fixation and photosynthetic carbon fixation as well as photochemical performan...

Journal: :Journal of the American Academy of Physician Assistants 2020

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2017
Pawan Kumar Jha Hanan Bouâouda Sylviane Gourmelen Stephanie Dumont Fanny Fuchs Yannick Goumon Patrice Bourgin Andries Kalsbeek Etienne Challet

Circadian rhythms in nocturnal and diurnal mammals are primarily synchronized to local time by the light/dark cycle. However, nonphotic factors, such as behavioral arousal and metabolic cues, can also phase shift the master clock in the suprachiasmatic nuclei (SCNs) and/or reduce the synchronizing effects of light in nocturnal rodents. In diurnal rodents, the role of arousal or insufficient sle...

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