نتایج جستجو برای: number of progeny

تعداد نتایج: 21178358  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...

احمدی زاده, محمود, اسمعیلی زاده کشکوئیه, علی, جباری عوری, رقیه, چراتی, هادی,

In this study, male and female birds of two strains including pure white (P1) and pure wild (P2) were chosen as parental generation and were crossed reciprocally to create the F1 progeny. The F1 birds were mated randomly to produce the F2 progeny. The studied traits were body weight at different ages, slaughter weight, carcass weight, carcass composition, internal organs, tonic immobility (TI) ...

Journal: :Stochastic Models 2022

We introduce a class of branching processes in which the reproduction or lifetime distribution at given time depends on total cumulative number individuals who have been born population until that time. focus continuous-time version these processes, called total-progeny-dependent birth-and-death and study some their properties through analysis deterministic (fluid) approximation. These include ...

Journal: :iranian journal of medical physics 0
shila banari bahnamiri physics department, faculty of science, ferdowsi university of mashhad, mashhad, iran

introduction the potential hazards posed by exposure to radiation from radon have been of great concern worldwide, since it is especially associated with increased risk of lung cancer. some radioisotopes of radon progeny deposited in the human lungs emit β particles followed by the γ rays. while γ rays are comparatively less damaging to the respiratory system than α and β particles, it is the p...

Journal: :iranian j. of fisheries science 0

the maintenance of the endangered caspian brown trout salmo trutta caspius populations in iran depends on its artificial breeding. there is no information on how current hatchery breeding protocol influences effective population size of breeders (ne), which is a critical parameter to maintain genetic diversity in future generations. the current hatchery protocol (chp) was comparatively evaluate...

A. Ahmad Fazel A. Hossein Khani H. Daghigh Kia,

Sixty Ghezel ewes (age 3.5 years) were used to study the effect of different nitrogenous supplements in flushing ration on reproductive performance. Experimental treatments were divided in five groups: group A: urea; group B: soybean meal (SBM); group C: corn gluten meal (CGM); group D: barley grain and group E: control or basal diet (no flushing). The four flushing rations had nearly the same ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پزشکی 1389

introduction: diabetes mellitus is an growing national and international public health concern. the number of people affected by diabetes in world by 2030 will be 69% in developing countries. regular physical activity plays a key role in the management of type 2 diabetes melitus, particularly glycemic control. it has been recommended that peoples with type 2 diabetes participate in moderate-int...

Journal: :Poultry science 1996
A Cahaner E J Smith S Swenson S J Lamont

Growth and egg production data from F2 layer chickens produced from a mating of MHC-heterozygous B15B44 sires to B15B44 and B15B43 dams were analyzed for associations with the level of the individual's genomic heterozygosity and dam MHC. The F1 sires and dams were produced from mating of birds from two genetically distinct, highly inbred lines. Genomic heterozygosity (expressed as composite ban...

Journal: :Genetics 2007
Shengqiang Zhong Jean-Luc Jannink

To develop inbred lines, parents are crossed to generate segregating populations from which superior inbred progeny are selected. The value of a particular cross thus depends on the expected performance of its best progeny, which we call the superior progeny value. Superior progeny value is a linear combination of the mean of the cross's progeny and their standard deviation. In this study we sp...

2006
ALIDA F. JANMAAT JUDITH H. MYERS

1. Variation in progeny size and quality is common among insects and this variation can strongly influence individual fitness. Larger progeny typically survive better and develop faster under adverse conditions and may have higher fecundity. Due to resource limitations, however, trade-offs may arise between having fewer large offspring or more smaller ones. 2. For cabbage loopers, Trichoplusia ...

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