Results 21 to 30 of about 1,933,203 (365)

Effects of Age and Season on Blood Parameters of Captive Giant Pandas: A Pilot Study

open access: yesAnimals, 2023
The giant panda, Ailuropoda melanoleuca, serves as a flagship species for biodiversity conservation, embodying the intersection of ecological, evolutionary, and anthropogenic forces shaping the natural world.
Ruijie Jiang   +9 more
doaj   +1 more source

Nonlinear Volatility of River Flux Fluctuations [PDF]

open access: yes, 2002
We study the spectral properties of the magnitudes of river flux increments, the volatility. The volatility series exhibits (i) strong seasonal periodicity and (ii) strongly power-law correlations for time scales less than one year. We test the nonlinear
A. Becker   +14 more
core   +1 more source

Forecasting models for seasonal rainfall for different regions of Gujarat

open access: yesJournal of Agrometeorology, 2010
The large spatial variability in monsoon rainfall over India demands for regional models for predicting the seasonal rainfall. Hence, models were developed for predicting seasonal (June-September) rainfall of three regions (north, middle and south) of ...
M. C. VARSHNEYA   +3 more
doaj   +1 more source

Dehydration in the tropical tropopause layer: Implications from the UARS Microwave Limb Sounder [PDF]

open access: yes, 2004
Measurements of H2O from the Microwave Limb Sounder (MLS) on the Upper Atmosphere Research Satellite (UARS) are used to investigate the structure of H2O in the near tropopause region and dehydration mechanisms in the tropical tropopause layer (TTL).
Barath   +38 more
core   +1 more source

Seasonal effect in essential oil composition and antioxidant activity of Plectranthus amboinicus leaves

open access: yesBioscience Journal, 2017
In view of the increasing search for natural products with biological activities, such as essential oils are of high quality because of their therapeutic and economic importance and represent the second class of natural compounds with the largest number ...
Rita de Cássia de Freitas Bezerra   +4 more
doaj   +1 more source

Inclusion of seasonal variation in river system microbial communities and phototroph activity increases environmental relevance of laboratory chemical persistence tests [PDF]

open access: yes, 2020
Regulatory tests assess crop protection product environmental fate and toxicity before approval for commercial use. Although globally applied laboratory tests can assess biodegradation, they lack environmental complexity.
Bending, G. D.   +4 more
core   +1 more source

Interannual and Seasonal Vegetation Changes and Influencing Factors in the Extra-High Mountainous Areas of Southern Tibet

open access: yesRemote Sensing, 2019
The ecosystem of extra-high mountain areas is very fragile. Understanding local vegetation changes is crucial for projecting ecosystem dynamics.
Zu-Xin Ye   +5 more
doaj   +1 more source

Seasonal variation in health effects of particulate matter in Tianjin

open access: yes环境与职业医学, 2022
BackgroundAdverse health effects associated with particulate matter have been demonstrated, but findings on seasonal variation in the health impacts are inconsistent. ObjectiveTo explore potential seasonal variation in particulate matter (PM2.5 and PM10)
Mengnan ZHANG, Yang NI, Qiang ZENG
doaj   +1 more source

Summertime, and the livin is easy: Winter and summer pseudoseasonal life expectancy in the United States [PDF]

open access: yes, 2017
In temperate climates, mortality is seasonal with a winter-dominant pattern, due in part to pneumonia and influenza. Cardiac causes, which are the leading cause of death in the United States, are also winter-seasonal although it is not clear why ...
Ho, Tina, Noymer, Andrew
core   +2 more sources

Experimental study and correction of dynamic characteristic parameters of silty clay under negative temperature conditions

open access: yesSoils and Foundations
In order to examine the principles governing the variation of dynamic characteristic parameters, including the damping ratio, dynamic modulus, and frozen soil backbone curve, under different negative temperature conditions, silty clays sourced from the ...
Haotian Guo   +3 more
doaj   +1 more source

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