نتایج جستجو برای: seasonal variations

تعداد نتایج: 243568  

2013
Shaina Cahill Erin Tuplin Matthew R. Holahan

Seasonal fluctuations in food availability show a tight association with seasonal variations in body weight and food intake. Seasonal variations in food intake, energy storage, and expenditure appear to be a widespread phenomenon suggesting they may have evolved in anticipation for changing environmental demands. These cycles appear to be driven by changes in external daylength acting on neuroe...

Journal: :Journal of the Japanese Society of Snow and Ice 1976

Journal: :American Journal of Public Health and the Nations Health 1960

Journal: :Journal of the Meteorological Society of Japan. Ser. II 1987

Journal: :Geophysical Research Letters 2004

2003
Mary Elliot Peter B. deMenocal Stephen S. Howe

[1] We have investigated the environmental controls of seasonally resolved records of oxygen and carbon isotopes of modern Mercenaria mercenaria bivalves collected live from five coastal sites along the east coast of North America. Seasonal profiles of dO and dC obtained by subsampling the incremental growth layers of aragonite were compared with in situ historical records of temperature and sa...

2015
C. Minaudo M. Meybeck F. Moatar N. Gassama

Trends and seasonality analysis from 1980 onward and longitudinal distribution, from headwaters to estuary, of chlorophyll a, nitrate and phosphate were investigated in the eutrophic Loire River. The continuous decline of phosphate concentrations which has been recorded since 1991 both in the main river and in the tributaries has led to the conclusion that it was responsible for the significant...

2017
Masahiro Minowa Shin Sugiyama Daiki Sakakibara Pedro Skvarca

The front position of calving glaciers is controlled by ice speed and frontal ablation which consists of the two processes of calving and subaqueous melting. However, the relative importance of these processes in frontal variation is difficult to assess and poorly understood, particularly for freshwater calving glaciers. To better understand the mechanism of seasonal variations involved in the ...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2012
Yeoungjee Cho Sunil V Badve Carmel M Hawley Stephen P McDonald Fiona G Brown Neil Boudville Kathryn J Wiggins Kym M Bannister Philip A Clayton David W Johnson

BACKGROUND The role of seasonal variation in peritoneal dialysis (PD)-related peritonitis has been limited to a few small single-centre studies. METHODS Using all 6610 Australian patients receiving PD between 1 October 2003 and 31 December 2008, we evaluated the influence of seasons on peritonitis rates (Poisson regression) and outcomes (multivariable logistic regression). RESULTS The overa...

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