Results 191 to 200 of about 336,986 (421)

Demonstration of Circadian Rhythm in Heart Rate Turbulence using Novel Application of Correlator Functions [PDF]

open access: yesarXiv, 2006
Background: It has been difficult to demonstrate circadian rhythm in the two parameters of heart rate turbulence, turbulence onset (TO) and turbulence slope (TS). Objective: To devise a new method for detecting circadian rhythm in noisy data, and apply it to selected Holter recordings from two post-myocardial infarction databases, Cardiac Arrhythmia ...
arxiv  

Synchronization of the mammalian circadian timing system: Light can control peripheral clocks independently of the SCN clock

open access: yesBioessays, 2015
A vast network of cellular circadian clocks regulates 24‐hour rhythms of behavior and physiology in mammals. Complex environments are characterized by multiple, and often conflicting time signals demanding flexible mechanisms of adaptation of endogenous ...
J. Husse, G. Eichele, H. Oster
semanticscholar   +1 more source

The Impact of Redox Mediators on the Electrogenic and Physiological Properties of Synechocystis sp. PCC 6803 in a Biophotovoltaic System

open access: yesChemSusChem, EarlyView.
Redox mediators are essential to promote the electrogenic activity of cyanobacteria in biophotovoltaics. In this work, we systematically evaluates three representative mediators about their influence on the cyanobacterial growth, photosynthetic efficiency, and electrogenic activity. The results reveal distinct impacts of different mediators, despite of
Jianqi Yuan   +6 more
wiley   +1 more source

Rhythms of metabolism in adipose tissue and mitochondria

open access: yesNeurobiology of Sleep and Circadian Rhythms, 2018
Circadian clocks synchronize the daily functions of organisms with environmental cues like light-dark cycles and feeding rhythms. The master clock in the suprachiasmatic nucleus in the hypothalamus of the brain and the many clocks in the periphery are ...
Yasemin Onder, Carla B. Green
doaj  

Differential effects of light and feeding on circadian organization of peripheral clocks in a forebrain Bmal1 mutant

open access: yeseLife, 2014
In order to assess the contribution of a central clock in the hypothalamic suprachiasmatic nucleus (SCN) to circadian behavior and the organization of peripheral clocks, we generated forebrain/SCN-specific Bmal1 knockout mice by using floxed Bmal1 and ...
Mariko Izumo   +8 more
doaj   +1 more source

What season suits you best? Seasonal light changes and cyanobacterial competition [PDF]

open access: yesarXiv, 2013
Nearly all living organisms, including some bacterial species, exhibit biological processes with a period of about 24 h called circadian (from the Latin circa, about, dies, day) rhythms. These rhythms allow living organisms to anticipate the daily alternation of light and darkness.
arxiv  

Lipid and Corticosteroid Biomarkers Under the Influence of Bisphosphonates

open access: yesDrug Testing and Analysis, EarlyView.
The detection of bisphosphonates is important due to the potential integrity and welfare issues associated with use of these substances. Targeted detection of a nitrogenous and non‐nitrogenous bisphosphonate was detected for 8 h and 28 days post‐administration, respectively.
Kathy Tou   +8 more
wiley   +1 more source

Integrating Artificial Intelligence and Smartphone Technology to Enhance Personalized Assessment and Treatment for Eating Disorders

open access: yesInternational Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Smartphone technology presents a promising path toward expanding access to evidence‐based eating disorder assessment and treatment. Despite rapid technological advances, research has yet to harness these systems in ways that make personalized digital health care a clinical reality.
Jake Linardon, John Torous
wiley   +1 more source

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