نتایج جستجو برای: climatic variations
تعداد نتایج: 216876 فیلتر نتایج به سال:
[1] Significant variations in interannual and decadal recharge rates are likely in alluvial basins of the semiarid southwestern United States on the basis of decadal variations in climate and precipitation and correlation of El Niño with high rates of winter precipitation and streamflow. A better understanding of the magnitude of recharge variations in semiarid and arid regions would reduce wat...
Our objective in this study was to evaluate a causal relationship between vestibular pathological findings and climatic variations during the year (summer, autumn, winter, and spring). The study was conducted in a Brazilian clinic located in a tropical climate and having well-defined warm and cold weather. For this retrospective study, our outpatients were the subjects, and the diagnosis was ma...
Plant-derived natural products or secondary metabolites attract a great deal of attention pertaining to their structure, synthesis and production of wide variety of economically important products, such as flavors, fragrances, pigments, dyes, fine chemicals, cosmetics, nutraceuticals, drugs and pharmaceuticals. Most common approach for obtaining these compounds is from their native source i.e. ...
A neural network that was designed to control a Spirulina aquaculture process in a pilot plant in the north of Chile, is presented in this work. Spirulina is a super food, but is a delicate alga and its culture may be suddenly lost by rapid changes in the weather that can affect its temperature, salinity or pH. The neural network control system presented is complex and non linear, and has sever...
Climatic factors and the occurrence of vesicular stomatitis in New Mexico, United States of America.
Vesicular stomatitis (VS) outbreaks occurred in the southwestern United States of America in 1995, 1997 and 1998. The epidemiology of VS is not understood completely and some of the epidemiologic aspects of this disease are currently under investigation. In this study, daily maximum temperature, daily minimum temperature, daily mean temperature, daily mean relative humidity and daily total prec...
The objective of this paper is to characterize the spatiotemporal variations of vegetation phenology along latitudinal and altitudinal gradients in Greenland, and to examine local and regional climatic drivers. Time-series from the Moderate Resolution Imaging Spectroradiometer (MODIS) were analyzed to obtain various phenological metrics for the period 2001-2015. MODIS-derived land surface tempe...
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