نتایج جستجو برای: seasonal trend

تعداد نتایج: 183554  

2002
M. D. Schwarzkopf V. Ramaswamy

[1] Monthly and seasonal stratospheric zonal-mean temperature trends arising from recent changes in stratospheric ozone and well-mixed greenhouse gases (WMGGs) are simulated using a general circulation model and compared with observed (1979–2000) trends. The combined effect of these gases yields statistically significant cooling trends over the entire globally averaged stratosphere in all month...

Journal: :Applied and environmental microbiology 1982
V L Sheladia R D Ellender R A Johnson

Enteroviruses were isolated from influent and effluent wastewaters of two types of oxidation lagoons during an 18-month study. Isolations, performed by sewage concentration and direct assay, were low in number and did not follow a seasonal trend. The younger treatment system, using aeration and effluent chlorination, was more efficient at removing viruses than the aging, static complex.

2008

Meurer, A.Z. & Netto,S.A. 2007. Seasonal dynamics of benthic communities in a shallow sublittoral site of Laguna Estuarine System (South, Brazil). Braz. J. Aquat. Sci. Technol. 11(2):53-62. ISSN 1808-7035. The seasonal variability of the benthic community in a shallow sublittoral site was analyzed at the Laguna Estuarine System, a chocked lagoon in South Brazil. Seasonal replicate samples for t...

2009
K. N Krishnakumar G.S.L.H.V. Prasada Rao C. S Gopakumar

Attempts were made to study temporal variation in monthly, seasonal and annual rainfall over Kerala, India, during the period from 1871 to 2005. Longterm changes in rainfall determined by Man-Kendall rank statistics and linear trend. The analysis revealed significant decrease in southwest monsoon rainfall while increase in post-monsoon season over the State of Kerala which is popularly known as...

Journal: :Journal of vector borne diseases 2014
Bijoy K Handique Siraj A Khan J Mahanta S Sudhakar

BACKGROUND & OBJECTIVES Japanese encephalitis (JE) is one of the dreaded mosquito-borne viral diseases mostly prevalent in south Asian countries including India. Early warning of the disease in terms of disease intensity is crucial for taking adequate and appropriate intervention measures. The present study was carried out in Dibrugarh district in the state of Assam located in the northeastern ...

Journal: :Remote Sensing 2017
Shuvankar Ghosh Deepak R. Mishra

In this study, we examined the phenology of the salt marsh ecosystem across coastal Louisiana (LA) for a 16-year time period (2000–2015) using NASA’s Moderate Resolution Imaging Spectroradiometer’s (MODIS) eight-day average surface reflectance images (500 m). We compared the performances of least squares fitted asymmetric Gaussian (AG) and double logistic (DL) smoothing functions in terms of in...

2012
Anette L Christensen Søren Lundbye-Christensen Kim Overvad Lars H Rasmussen Claus Dethlefsen

BACKGROUND Seasonal variation in the occurrence of cardiovascular diseases has been recognized for decades. In particular, incidence rates of hospitalization with atrial fibrillation (AF) and stroke have shown to exhibit a seasonal variation. Stroke in AF patients is common and often severe. Obtaining a description of a possible seasonal variation in the occurrence of stroke in AF patients is c...

Temperature is an element of climate that it has changed during the time and affected other parameters with changing itself. So we can account it in category of the most affect of the climate parameter. The purpose of this study was analyzed trend of annual and seasonal maximum temperature during the past decades in the Daryache-e-Namak basin. So, the data of 14 Climatology stations that locate...

Journal: :تحقیقات جغرافیایی 0
اکبر زهرائی گروه جغرافیای طبیعی دانشگاه سیستان و بلوچستان تقی طاوسی گروه جغرافیای طبیعی دانشگاه سیستان و بلوچستان

abstract: the dust is one of the weather phenomena that have negative environmental effects and consequences. the central city of ahvaz in khuzestan province is one of cities that in every year witnessed the dust in its environment. in this study, after determining that the dust phenomena data are abnormal, using the sen's nonparametric model been proceed to modeling of changes and survey ...

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