نتایج جستجو برای: reproductive stage duration
تعداد نتایج: 636967 فیلتر نتایج به سال:
Incubation temperature during embryonic development determines gonadal sex in many reptiles, including the leopard gecko (Eublepharis macularius). In this study, we examined the hormonal and behavioral changes that occur during the reproductive cycle of female leopard geckos from four (i.e., 26, 30, 32.5, and 34 degrees C) incubation temperatures. Controlling for reproductive status, plasma lev...
Aims: Reproductive parameters are important tools for the sustainable management of halieutic species in water bodies its exploitation. This study intends to characterize sexual maturity scale swimming crab Callinectes pallidus, perform testicular and ovarian structures order develop a specific scale.
 Study Design: was carried out with macroscopic microscopic observations 394 specimens cr...
in order to determine the critical period of weed control and investigation the effect of periodical control and interference of weeds natural population on yield and yield components of winter canola (brassica napus l. cv. okapi) in west region of tehran an experiment was carried out at research field of tarbiat modarres university, tehran, iran on 2004-5 growing season. fourteen experimental ...
Background and Objectives: Reproductive factors are in close relationship with breast carcinogenesis. This matched case-control study was conducted to study the association of reproductive risk factors with the risk of breast cancer (BC) among women in Tehran and northwest of Iran. Methods: This hospital-based case-control study was performed on a total of 432 patients diagnosed with BC with...
In this paper we propose a two-stage duration model using neural networks for predicting the duration of syllables in Indian languages. The proposed model consists of three feedforward neural networks for predicting the duration of syllable in specific intervals and a syllable classifier, which has to predict the probability that a given syllable falls into an interval. Autoassociative neural n...
Regret minimization in repeated matrix games has been extensively studied ever since Hannan’s (1957) seminal paper. Several classes of no-regret strategies now exist; such strategies secure a longterm average payoff as high as could be obtained by the fixed action that is best, in hindsight, against the observed action sequence of the opponent. We consider an extension of this framework to repe...
The aim of the study was to determine duration of delirium in patients with acute stroke according to sex, age, type and localization of lesion. We assessed delirium prospectively in a sample of 233 consecutive patients with an acute (< or =4 days) stroke using the Delirium Rating Scale (DRS-R-98) and Diagnostic and Statistical Manual of Mental Disorders (DSM IV). The average duration of deliri...
The negative effects of water stress, reduced water use and nutritional disorders in plants. So in order to study the effects of foliar application of iron and manganese on some morphological and physiological characteristics of Mungbean (cultivar beam) under water deficit stress, this experiment was conducted in the Faculty of Agriculture of Tarbiat Modares University as randomized complete bl...
Females vary in the size of offspring that they produce, often in a manner that depends on maternal age or stage. This is puzzling, given that offspring size is predicted to evolve to a single optimal value where the gain in fitness from being larger exactly offsets the fitness lost to the mother by producing fewer offspring. We used a stage-structured life-history model to determine the optima...
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