نتایج جستجو برای: biological characteristics of gonad (e.g. fertilization rate

تعداد نتایج: 21237184  

Journal: :بهره برداری و پرورش آبزیان 0
هاجر آذرین دانشگاه منابع طبیعی گرگان محمدرضا ایمانپور دانشگاه علوم کشاورزی و منابع طبیعی گرگن وحید تقی زاده دانشگاه علوم کشاورزی و منابع طبیعی گرگان محمد پور دهقانی انستیتو ماهیان خاویاری

the correlation between serum steroid hormones, testosterone (t), 17β-estradiol (e2), and progesterone (p) and weight of female fishes, biological characteristics of gonad (e.g. fertilization rate, fluid egg rate, gonadosomatic index , polarization index and oocyte diameter) in 10 female of the migratory population of sterlet (acipenser ruthenus) and 5 female of the migratory population of sibe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده کشاورزی 1393

هدف از آزمایش اول بررسی اثر سطوح مختلف سریسین [0 (control), 0.1, 0.5, 1.0, 2.5 %] افزوده شده به محیط , ivm بر cumulus cell expansion، بلوغ هسته و توسعه متوالی جنین، در گوسفندان نژاد سنجابی در فصل تولید مثلی می باشد. از سرگیری میوز به وسیله خارج شدن اولین پولار بادی اندازه گیری و هم چنین درصد رسیدن جنین های دو سلولی به مرحله کلیواژ و بلاستوسیت نیز به عنوان نشانه ای از میزان شایستگی توسعه اولیه ج...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1389

abstract the present research is prepared to study the culture of tea consuming among iranian. the case group which was statistically used for this study was people of lahijan , about four hundred wich were chosen according to their age , gender , education and occupation , randomly selected to fill the questionnaire . then the data collected through the questionnaire was analyzed according ...

Journal: :middle east journal of digestive diseases 0
mohammad bagheri mandana ashrafi mehdi mohammadnejad lila abdollahzadeh hosseini siavosh nasseri-moghaddam shahin merat

â  â  background eosinophilic gastroenteritis (eg) is a rare inflammatory disorder of the gastrointestinal (gi) tract. there have been several case series of patients with eg from the western world and east asia. however, there has not been a report of patients with eg from the middle east region. the aim of this study is to describe clinical characteristics and treatment response in a series o...

Journal: :cell journal 0
zahra khodabandeh jahromi fardin amidi afruz habibi majid ebrahimi seid mohammad hossein nori mugehe aligoli sobhani

background: the aim of this study was to investigate the effects of two vitrification protocols on mouse metaphase stage ii (mii) oocytes and evaluate their effects on the expression of heat shock protein a1a (hsp a1a) and mnsod genes. materials and methods: groups of approximately 15 oocytes without cumulus complexes were collected and vitrified with 10% (v/v) ethylene glycol (eg) + 10% (v/v) ...

Journal: :Mechanisms of Development 2009
Woo Chi Valerie Reinke

Proper coordination of oogenesis, ovulation, and fertilization is essential for successful reproduction. In Caenorhabditis elegans, a strong loss-of-function mutation in dpl-1, which encodes a subunit of the E2F heterodimeric transcription factor EFL-1/DPL-1, causes severe defects during ovulation and fertilization. Here we demonstrate that the somatic gonad structure and sheath cell contractio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1393

this thesis aims at putting together two of the vestest areas of study there is in humanities: bioethics and literature. the two novels in question, oryx and crake and the year of the flood, are considered as some of the most succssful examples of spculative fiction. in these novels the biological and environmental issues raised as looked at from a bioethics point of view.

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 :0 1391

employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull dis...

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