نتایج جستجو برای: 110.16 mm. the exponential relationship betweenlength and weight in both sexes indicated negative allometric growth. growth equation waslt= 12.45(1

تعداد نتایج: 24190640  

Journal: :شیلات 0
فاطمه عباسی دانشکدة شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران رسول قربانی دانشکدة شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران سعید یلقی مرکز تحقیقات آبزیان آب های داخلی کشور، استان گلستان، ایران عبدالمجید حاجی مرادلو دانشکدة شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران عبدالعظیم فاضل کارشناس ارشد شیلات، دانشکدة منابع طبیعی، دانشگاه گیلان، ایران

in this study, the distribution, abundance and some growth parameters of spirlin, alburnoideseichwaldii in the tilabad stream in the golestan province was studied over 2009-2010. a totalof 535 samples of spirlins were collected by catching with electroshocker. a total number of205 samples was analyzed and the rest of the specimens were released. spirlin was found onlyin stations 1 and 2 (the he...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده کشاورزی 1390

abstract previous researches have shown success of growth hormones usage on flower production increase, pod and prevention of abscission of them in some of the pulses. two tests were done, in order to find out the effects of growth hormones to on flower production increase, pod and chick pea yield composites in farmer conditions (2010-11) and green house conditions as factorial on the proje...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ادبیات و علوم انسانی 1391

terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ایلام 1388

the present study was an attempt to determine the types of motivation and levels of foreign language learning anxiety among efl students studying at azad and state universities in kermanshah and to determine the relationship between these two factors and language proficiency and gender. to this end, the foreign language learning motivation scale, by deci and ryan )1985(, were administered to 12...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1390

with the growth of more humanistic approaches towards teaching foreign languages, more emphasis has been put on learners’ feelings, emotions and individual differences. one of the issues in teaching and learning english as a foreign language is demotivation. the purpose of this study was to investigate the relationship between the components of language learning strategies, optimism, duration o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده منابع طبیعی 1392

nowadays, air pollution is a global problem that has had significant growth by technology development, population growth andindustrial development. industrial development brought natural resources deterioration, more manufacturing products, and more environmental pollutants. if pollutant won’t be controlled, human-being and wildlife will face the critical risks. significant release and critical...

ژورنال: بوم شناسی آبزیان 2019

Oriental shrimp is conexotis species that widely distributed in northern Iran. This study was conducted to determine population dynamic characteristics of this species based on Its specimen in Golestan dam lake from February to September 2016. Sex ration was unbalanced  in favorite of females (1 : 1.88). Total length and weight ranged from 16.06 to 85.01 mm and 0.04 to 6.75 gr respectively. The...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و زبانهای خارجی 1390

abstract the current study set out to address the issue as to whether the implementation of portfolio assessment would give rise to iranian pre-intermediate efl learner autonomy. participants comprised 60 female in pre-intermediate level within the age range of 16-28.they were selected from among 90 language learners based on their scores on language proficiency test -key english test. then, t...

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