نتایج جستجو برای: diurnal

تعداد نتایج: 15614  

Journal: :Brain, behavior, and immunity 2013
Sandra E Sephton Elizabeth Lush Eric A Dedert Andrea R Floyd Whitney N Rebholz Firdaus S Dhabhar David Spiegel Paul Salmon

BACKGROUND Poorly coordinated diurnal cortisol and circadian rest-activity rhythms predict earlier mortality in metastatic breast and colorectal cancer, respectively. We examined the prognostic value of the diurnal cortisol rhythm in lung cancer. METHODS Lung cancer patients (n=62, 34 female) were within 5 years of diagnosis and had primarily non small-cell lung cancer, with disease stage ran...

2014
Kyla Drushka Sarah T. Gille Janet Sprintall

Observations from 35 tropical moorings are used to characterize the diurnal cycle in salinity at 1 m depth. The amplitude of diurnal salinity anomalies is up to 0.01 psu and more typically 0.005 psu. Diurnal variations in precipitation and vertical entrainment appear to be the dominant drivers of diurnal salinity variability, with evaporation also contributing. Areas where these processes are s...

2006
Mimi Hughes Alex Hall

Analyzing a 6-km resolution atmospheric simulation of Southern California from 1995 to the present, we characterize climatological diurnal cycles of surface air temperature and winds. We find that these quantities have significant spatial structure due to dynamical links between them. The large daily warming and cooling over land induces expected flows across the coastline and elevation isoline...

Journal: :The American journal of physiology 1984
G A Carpenter S Grossberg

A neural model of the suprachiasmatic nuclei suggests how behavioral activity, rest, and circadian period depend on light intensity in diurnal and nocturnal mammals. These properties are traced to the action of light input (external zeitgeber) and an activity-mediated fatigue signal (internal zeitgeber) on the circadian pacemaker. Light enhances activity of the diurnal model and suppresses acti...

2015
Shi Chen Shelby J. Fleischer Michael C. Saunders Matthew B. Thomas

Ectotherms, such as insects, experience non-constant temperatures in nature. Daily mean temperatures can be derived from the daily maximum and minimum temperatures. However, the converse is not true and environments with the same mean temperature can exhibit very different diurnal temperate ranges. Here we apply a degree-day model for development of the grape berry moth (Paralobesia viteana, a ...

2013
WEIHUA YUAN RUCONG YU MINGHUA ZHANG WUYIN LIN JIAN LI YUNFEI FU

The simulations of summertime diurnal cycle of precipitation and low-level winds by the Community Atmosphere Model, version 5, are evaluated over subtropical East Asia. The evaluation reveals the physical cause of the observed diurnal rainfall variation in East Asia and points to the source of model strengths and weaknesses. Two model versions with horizontal resolutions of 2.88 and 0.58 are us...

2015
Takeshi Iwase Kentaro Yamamoto Eimei Ra Kenta Murotani Shigeyuki Matsui Hiroko Terasaki Edoardo Villani.

To investigate the diurnal variations of the ocular blood flow in healthy eyes using laser speckle flowgraphy (LSFG), and to determine the relationship of the diurnal variations between the ocular blood flow and other ocular parameters.This prospective cross-sectional study was conducted at Nagoya University Hospital. We studied 13 healthy volunteers whose mean age was 33.5 ± 7.6 years. The mea...

2005
E. NAYLOR

Since the early observations of tidal rhythms in Convoluta (Gamble & Keeble, 1903, 1904) and in Actinia (Bohn, 1906) much experimental work on rhythms of behaviour in intertidal animals has been concerned with such phenomena as oxygen uptake and colour changes. Gompel (1937) demonstrated tidal rhythms of oxygen consumption in Patella, MytUus and Hatiotis and similar rhythms have been shown more...

Journal: :Health psychology : official journal of the Division of Health Psychology, American Psychological Association 2010
Leah D Doane William S Kremen Lindon J Eaves Seth A Eisen Richard Hauger Dirk Hellhammer Seymour Levine Sonia Lupien Michael J Lyons Sally Mendoza Elizabeth Prom-Wormley Hong Xian Timothy P York Carol E Franz Kristen C Jacobson

OBJECTIVE Millions of adults in the United States travel abruptly across time zones each year. Nevertheless, the impact of traveling over relatively short distances (across 3 or fewer time zones) on diurnal patterning of typical physiological response patterns has yet to be studied in a large, epidemiological sample. DESIGN The current research focuses on 764 middle-aged men comparing variati...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2010
Birgit C P Koch Karien van der Putten Eus J W Van Someren Jos P M Wielders Piet M Ter Wee J Elsbeth Nagtegaal Carlo A J M Gaillard

BACKGROUND The nocturnal endogenous melatonin rise, which is associated with the onset of sleep propensity, is absent in haemodialysis patients. Information on melatonin rhythms in chronic kidney disease (CKD) is limited. Clear relationships exist between melatonin, core body temperature and cortisol in healthy subjects. In CKD, no data are available on these relationships. The objective of the...

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