Results 51 to 60 of about 492,257 (392)

Light masking of the circatidal activity rhythm in the mangrove cricket Apteronemobius asahinai [PDF]

open access: yes, 2013
Apteronemobius asahinai shows two rhythms in its locomotor activity. One is the circatidal rhythm, which produces active and inactive phases, and the other is the circadian rhythm, which suppresses the intensity of the activity of the circatidal active ...
Goto, Shin G.   +3 more
core   +1 more source

Circadian rhythms and diabetes [PDF]

open access: yesJournal of Diabetes Investigation, 2011
All free‐living organisms are regulated by the 24‐h light and dark cycle produced by Earth’s rotation. In mammals, circadian rhythms are indispensble for the regulation of physiological and biochemical processes in the body. In 1972, the suprachiasmatic nucleus was shown to be required for daily rhythms in animal behavior1.
Nobuya Inagaki   +2 more
openaire   +2 more sources

Body-temperature circadian rhythm in 67 patients after heart valve replacement surgery secondary to valvular heart disease

open access: yesInternational Journal of Nursing Sciences, 2014
Purpose: Patient body temperature was monitored after cardiac valve replacement, in order to explore the characteristics of body-temperature circadian rhythm and the factors influencing that rhythm.
Xiao-Ying Jiang, Cong Wang
doaj   +1 more source

Lighting as a Circadian Rhythm-Entraining and Alertness-Enhancing Stimulus in the Submarine Environment [PDF]

open access: yes, 2006
The human brain can only accommodate a circadian rhythm that closely follows 24 hours. Thus, for a work schedule to meet the brain’s hard-wired requirement, it must employ a 24 hour-based program.
Bullough, J. D.   +4 more
core   +1 more source

Effect of Circadian Rhythm on Metabolic Processes and the Regulation of Energy Balance

open access: yesAnnals of Nutrition and Metabolism, 2019
Background: The circadian timing system or circadian clock plays a crucial role in many biological processes, such as the sleep-wake cycle, hormone secretion, cardiovascular health, glucose homeostasis, and body temperature regulation.
Yeliz Serin, Nilüfer Acar Tek
semanticscholar   +1 more source

Rheostatic Balance of Circadian Rhythm and Autophagy in Metabolism and Disease

open access: yesFrontiers in Cell and Developmental Biology, 2020
Circadian rhythms are physical, behavioral and environmental cycles that respond primarily to light and dark, with a period of time of approximately 24 h.
Xiang Wang   +8 more
doaj   +1 more source

Circadian rhythm and cell population growth [PDF]

open access: yes, 2010
Molecular circadian clocks, that are found in all nucleated cells of mammals, are known to dictate rhythms of approximately 24 hours (circa diem) to many physiological processes.
Bekkal Brikci   +27 more
core   +5 more sources

Circadian rhythms in parasites

open access: yesPLOS Pathogens, 2017
Copyright: © 2017 Rijo-Ferreira et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Filipa Rijo-Ferreira   +2 more
openaire   +6 more sources

Circadian Rhythms in Cyanobacteria [PDF]

open access: yesMicrobiology and Molecular Biology Reviews, 2015
SUMMARY Life on earth is subject to daily and predictable fluctuations in light intensity, temperature, and humidity created by rotation of the earth. Circadian rhythms, generated by a circadian clock, control temporal programs of cellular physiology to facilitate adaptation to daily environmental changes.
Cohen, Susan E, Golden, Susan S
openaire   +5 more sources

Circadian rhythms and cancers: the intrinsic links and therapeutic potentials

open access: yesJournal of Hematology & Oncology, 2022
The circadian rhythm is an evolutionarily conserved time-keeping system that comprises a wide variety of processes including sleep–wake cycles, eating–fasting cycles, and activity–rest cycles, coordinating the behavior and physiology of all organs for ...
Li Zhou   +5 more
doaj   +1 more source

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