نتایج جستجو برای: treated showed than 80 infection rate growth regulator
تعداد نتایج: 4453591 فیلتر نتایج به سال:
this study aimed at examining the effects of iranian efl learners’ anxiety, ambiguity tolerance, and gender on their preferences for corrective feedback (cf, henceforth). the effects were sought with regard to the necessity, frequency, and timing of cf, types of errors that need to be treated, types of cf, and choice of correctors. seventy-five iranian efl students, twenty-eight males and forty...
?it is of utmost priority for an experienced teacher to train the mind of the students, and enable them to think critically and correctly. the most important question here is that how to develop such a crucial ability? this study examines a new way to the development of critical thinking utilizing critical discourse analytical tools. to attain this goal, two classes of senior english la...
The present study has been conducted to investigate the effect of insect growth regulator BAY SIR 8514 on chitin and chitinase enzymes of 2 in star of Spodoptera littoralis larvae, the effect of sublethal doses, LC 25, LC 50 and LC90 shows a significant effect on antifeedant index, on the other hand larval treatment with the tested IGR doses revealed, certain histo-pathological symptoms such as...
this study was conducted to determine the effects of administration of different concentration of aloe vera crud extract (ace) as a food supplement on growth performance, immune response and disease resistance against aeromonas hydrophila (chester) infection in cyprinus carpio. 360 juvenile c.carpio were randomly divided into four equal groups in triplicates. groups 1 to 4 were fed by basal foo...
background and purpose: tgf-β is a potent regulator and suppressor of the immune system and overproduction of this cytokine may contribute to immunosuppression in hiv-infected patients. increasing population of immunosuppressed patients has resulted in increasingly frequent of fungal infections, including oral candidiasis. the aim of this study was to evaluate the plasma levels of tgf-β under i...
background: combination of cyromazine as an insect growth regulator (igr) and nasonia vitripennis (hymenop tera: pteromalidae) a parasitic wasp may be an effective tool for reducing the house-fly populations in poultry houses and livestock farms. this study was conducted to assess the side effects of the igr cyromazine on the level of parasit ism and numbers and the longevity of emerged n. vitr...
abstract: the growth rate of two probiotic strains with documented health effects was studied in ultra-high temperature treated milk separately and beside each other. the probiotic strains were lactobacillus acidophilus (la-5) and bifidobacterium lactis (bb-12). fermentation was followed for 12 h at 37 ˚c and the samples were analyzed for ph, titratable acidity and viable counts of probiotic ba...
in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...
the damages due to dwarf mistletoes to the industrial forests encouraged the scientists to evaluate the infection intensity and illustrate the spatial distribution of mistletoes for forest management, wild life and biodiversity conservation. there are two current systems to evaluate infection intensity wich are easier, cheaper, more efficient and authoritative than others in all over the world,...
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