نتایج جستجو برای: as spring turns to summer

تعداد نتایج: 11433897  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1390

this study was conducted to investigate the impact of podcasts as a learning and teaching tool on iranian efl learners’ motivation for listening as well as on their listening comprehension ability. the study also investigated the learners’ perception towards listening to podcasts and examined whether the learners were likely to accept podcasts. out of fifty-five intermediate learners studying e...

Journal: :Journal of evolutionary biology 2013
N I Morehouse N Mandon J-P Christides M Body G Bimbard J Casas

Seasonal polyphenisms are widespread in nature, yet the selective pressures responsible for their evolution remain poorly understood. Previous work has largely focussed either on the developmental regulation of seasonal polyphenisms or putative 'top-down' selective pressures such as predation that may have acted to drive phenotypic divergence. Much less is known about the influence of seasonal ...

شیری, محمدرضا,

This study was conducted to estimate stability of yield in forage sorghum varieties for identifying varieties with combine stability and high yield potential across two cropping conditions. Thus, seven forage sorghum varieties were evaluated for three years under two cropping conditions including spring (E1) and summer (E2) cropping, using a randomized complete block design with four replicatio...

Journal: :Frontiers in bioscience : a journal and virtual library 2003
Augusto Foá Cristiano Bertolucci

The pineal gland plays a role in the seasonal re-organization of the circadian system that occurs in Ruin lizard Podarcis sicula. In fact, either pinealectomy or melatonin implants induce an immediate transition from the circadian locomotor pattern typical of summer to the circadian locomotor pattern typical of spring or autumn. Furthermore, the degree of involvement of melatonin and the pineal...

Cheraghi, M. , Ghobadi, A. , Lorestani, B. , Sobhanardakani, S. ,

Nowadays, the increase in population growth rate and followed by anthropogenic activities such as urbanization, industrialization, mining and agriculture practices continuously increase the amount of heavy metals in the environment especially groundwater resources. Therefore, qualitative assessment of groundwater resources is of great importance for maintaining public health and for this reason...

ژورنال: بوم شناسی آبزیان 2017

This study aimed to achieve length frequency, condition factor and length-weight relationship of the rock oyster, Saccostrea cucullata in the coastal waters of Persian Gulf. Sampling was carried out by 0.25 m2 quadrat through intertidal zone from winter 2015 to autumn 2016. According to the results, length-weight relationship calculated as W=0.000004L2.79 for both sexes. In addition, coefficien...

2013
R. Sankar G. Archunan

The present investigation was carried out to evaluate the effects of environmental factors on reproductive performance of bovine (Bos taurus) during summer, winter and spring for one year. The study was performed on free moving animals under natural condition during the two consecutive estrus periods by visual observation. The duration of estrus, numbers of mounts were observed. There was a sea...

Journal: :محیط زیست طبیعی 0
سعیده ملکی نجف آبادی عضو هیأت علمی دانشکده منابع طبیعی، دانشگاه زابل، ایران محمودرضا همامی استادیار دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان، ایران عبدالرسول سلمان ماهینی دانشیار دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

isfahan wild sheep ovis orientalis isphahanica is listed as vulnerable in the iucn red list of threatened species. adequate knowledge on habitat requirements and environmental factors determining the niche of a species is central to its conservation programmes. however, there is scarcity of data on habitat associations of this species in iran. a gis-based model, using presence-only data, was us...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

this thesis seeks to present a critical reading of virginia woolf’s mrs. dalloway and michael cunningham’s the hours in terms of an intertextual approach, concentrating on dialogic imagination, negativity, transposition and allusion. this study attempts to evaluate cunninghams perception of woolfs life and work by adopting kristevas conception of intertextuality and her consideration of the hou...

Journal: :natural environment change 0
mohsen abbasnia ph.d candidate of climatology, department of physical geography and environmental planning, university of sistan and baluchestan, zahedan, iran taghi tavousi professor of climatology, department of physical geography and environmental planning, university of sistan and baluchestan, zahedan 987-98135, iran. mahmood khosravi associated professor of climatology, department of physical geography and environmental planning, university of sistan and baluchestan, zahedan 987-98135, iran. huseyin toros associated professor of meteorology, department of meteorology engineering, istanbul technical university, maslak istanbul 34469, turkey.

the purpose of this research is to analyze heat waves characteristics in the warm period of the year as a climatic hazard in iran. in this study, the daily maximum temperature is taken at 44 synoptic stations during the period 1981-2010. these temperature values were used to extract the intensity, frequency and duration of heat waves using percentile thresholds of 90, 95, and 98. the results sh...

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