نتایج جستجو برای: size at first maturity

تعداد نتایج: 4891787  

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

the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...

Journal: :Egyptian Journal of Aquatic Biology and Fisheries 2021

The present study depicts the first comprehensive description on population structure, growth pattern (length-weight relationships, LWRs and length-length LLRs), condition factor (allometric, KA; Fultonʹs, KF; relative, KR relative weight, WR), maturity (size at sexual maturity; Lm), form (a3.0) natural mortality (Mw) of Trichogaster fasciata (Bloch Schneider, 1801)in Ganges River, Northwestern...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی شیمی 1391

attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...

2004
STEPHAN HÜLSMANN JACOBUS VIJVERBERG MAARTEN BOERSMA WOLF M. MOOIJ

Life history shifts in daphnids in response to fish infochemicals are generally interpreted as an adaptive response to positive size-selective predation. This interpretation does, however, not hold for larval and small juvenile planktivorous fish, which due to gape limitation, feed on small and medium sized prey. In a life table experiment we show that daphnids exposed to infochemicals excreted...

2001
Freddie M. Bourland N. Ray Benson Earl D. Vories N. Phillip Tugwell Diana M. Danforth

Due to its indeterminate growth habit, maturation of cotton (Gossypium hirsutum L.) is affected by many environmental and cultural factors. An easy and reliable measure of its progression toward maturity that can be attained during crop development is needed for both production and research programs. As a cotton plant develops, first-position flowers progress toward the plant apex, and their re...

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