Wheat (Triticum aestivum L.) plants change their metabolic state in response to low non-freezing temperatures adjusting the cellular homeostasis for upcoming winter season. The induction of oxidative stress during cold hardening as well as in response to freezing stress and recovery was under investigation in this work. Here we present data about the performance of some enzymes involved in plan...

Just like the seasons throughout the year, nothing stays the same. Things change. Your situation will change. Your circle of friends will change. Your job/position will change. Your health will change. Your appearance will change. Your finances will change. Your cell phones will change. Its data plan and software will change. Your residence will change. Everything under heaven, purposed by God,...

para-influenza type 3 virus is one of the most important respiratory system pathogens in cattle and buffalo which causese economical losses in cattle and buffalo raising industries. the aim of this study was to determine the pi3 frequency rate in buffalo calves in khuzestan tropical area and detect the associated factors. one hundred two serum samples were obtained from buffalo calves in winter...

Few epidemiological studies have examined the effects of season on symptoms typical of sick building syndrome (SBS). The present study aims to clarify seasonal variation in a perceived indoor environment and SBS symptoms in a temperate climate. A total of 116 workers were recruited from office buildings in southern Japan that presented no apparent serious indoor problems. A validated questionna...

Nutritional value of freshwater mesozooplankton, fatty acid (FA) and amino acid (AA) compositions were determined in the middle of each season for a one-year period from May 2009 to February 2010 in Hanna Dam Lake, Isfahan, Iran. FA and AA composition significantly (P<0.05) varied in relation to the seasonal changes of water quality, phytoplankton and zooplankton community. The content of satur...

Primiparous beef cows produced in 3 calving systems were used in a 2-yr study with a completely random design to measure milk yield throughout a 190-d lactation (2002, n = 20; 2003, n = 24 per calving system). Calving occurred in late winter (average calving date = February 4 +/- 2 d), early spring (average calving date = March 30 +/- 2 d), and late spring (average calving date = May 26 +/- 1 d...

in this study spatial pattern of seasonal and annual precipitation in west mountainous region of iran were investigated using a 35 hydrological year from 1965/66-1999/00 in 170 meteorological stations. in order to evaluate and analyze spatial differences across study area, time distribution of precipitation during the year were also investigated using precipitation concentration index (pci). th...

Nutritional value of freshwater mesozooplankton, fatty acid (FA) and amino acid (AA) compositions were determined in the middle of each season for a one-year period from May 2009 to February 2010 in Hanna Dam Lake, Isfahan, Iran. FA and AA composition significantly (P < 0.05) varied in relation to the seasonal changes of water quality, phytoplankton and zooplankton community. The content of sat...

Many studies have tried to explain the physiological mechanisms of the alpine treeline phenomenon, but the debate on the alpine treeline formation remains controversial due to opposite results from different studies. The present study explored the carbon-physiology of an alpine shrub species (Quercus aquifolioides) grown at its upper elevational limit compared to lower elevations, to test wheth...

We assessed seasonal variations in the effects of temperature on hypoxia-induced alterations in the bullfrog Rana catesbeiana by measuring the heart rate, arterial blood pressure, breathing frequency, metabolic rate, blood gas levels, acid-base status and plasma glucose concentration. Regardless of the season, decreased body temperature was accompanied by a reduction in heart and breathing freq...