نتایج جستجو برای: family background
تعداد نتایج: 1215496 فیلتر نتایج به سال:
The intergenerational transmission of education and social position is a widely studied topic, but measurement the significance gender in this subject has received less attention. We study differences effect parental disadvantage on probability child completing upper secondary Finland. use high-quality register data, collected by Statistics data are clustered according to families that includes...
To establish a high-efficiency system of isolated microspore culture for different barley genotypes, we investigated the effects of nitrogen sources and concentrations on callus induction and plant regeneration in different barley genotypes. The results showed that the organic nitrogen sources greatly increased the callus induction, and the great reduction of total nitrogen sources would signif...
The Chernobyl nuclear accident produced the largest unintended release of radionuclides in history, with dramatic consequences for humans and other organisms. Exposure to ionizing radiation is known to reduce circulating and stored levels of specific antioxidants in birds and humans, thus potentially increasing oxidative stress. However, overall effects of radioactive exposure on oxidative stat...
بررسی تنوع گونه ای و تغییرات فصلی کنه های شکارگر پرواستیگماتا بالاخانواده های bdelloidea، erythraeoidea و raphignathoidea در باغ های میوه دانه دار شهرستان مشهد چکیده کنه های شکارگر زیرراسته پرواستیگماتا از مهمترین دشمنان طبیعی کنه های تارتن، حشرات ریز مانند سفیدبالک ها، تریپس ها، شته ها و شپشک ها می باشند. به منظور بررسی فون کنه های بالاخانواده های raphignathoidea، bdelloidea و erythraeoidea ...
chapter one is devoted to a moderate discussion on preliminaries, according to our requirements. chapter two which is based on our work in (24) is devoted introducting weighted semigroups (s, w), and studying some famous function spaces on them, especially the relations between go (s, w) and other function speces are invesigated. in fact this chapter is a complement to (32). one of the main fea...
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