نتایج جستجو برای: between two tannic acids
تعداد نتایج: 4647439 فیلتر نتایج به سال:
in this research,the authors conducted a study comparing two groups of male and female english language learners studying in a elt institute,in terms of their performance on their achievement test including listening comprehension,vocabulary,grammar,and reading comprehension and found no significant difference between the group except in listening comprehension part of the test in which the f...
The antimicrobial effect of tannic acid and raw material of Acacia nilotica fruits and leaves (tannin-rich plant) on Clostridium perfringens were comparatively evaluated. Different concentrations) 10 mg to 10 μg/ml)of tannic acid; fruits, and leaves were tested on Cl. perfringens. The obtained results revealed that the minimum inhibitory concentrations were 156, 75 and 100 μg/ml for tannic acid...
this study attempted to explore if teaching english collocations through two different modes of awareness-raising and input flooding has any possible differential effect on immediate retention as well as retention in a delayed assessment. it also compared the possible differential effect of teaching english collocations implicitly and explicitly on actively using the items in writing. m...
Tannic acid inhibits the mutagenicity of several polycyclic aromatic hydrocarbons (PAHs) and their bay-region diol-epoxides. Our prior studies have shown that when applied topically to Sencar mice, tannic acid caused substantial inhibition of epidermal PAH metabolism, subsequent PAH-DNA adduct formation, and PAH-induced skin tumorigenesis (H. Mukhtar et al., Cancer Res., 48:2361-2365, 1988, and...
the purpose of the present study was to see which one of the two instruction-processing instruction (pi) and meaningful output based instruction (mobi) accompanied with prompt and recast- is more effective on efl learners’ writing accuracy. in order to homogenize the participants in term of language proficiency a preliminary english test (pet) was administrated between 74 intermediate students ...
this thesis seeks to present a critical reading of virginia woolf’s mrs. dalloway and michael cunningham’s the hours in terms of an intertextual approach, concentrating on dialogic imagination, negativity, transposition and allusion. this study attempts to evaluate cunninghams perception of woolfs life and work by adopting kristevas conception of intertextuality and her consideration of the hou...
In this study, carbon foams prepared from the by-products of Finnish forest industry, such as tannic acid and pine bark extracts, were examined supports for 5/5% Cu/Ni catalysts in hydrotreatment furfural to 2-methylfuran (MF). Experiments conducted a batch reactor at 503 K 40 bar H2. Prior metal impregnation, foam was activated with steam (S1), extracts ZnCl2 (S2) washed acids (HNO3 or H2SO4)....
Increasing evidence supports the hypothesis that tannic acid, a plant polyphenol, exerts anticarcinogenic activity in chemically induced cancers. In the present study, tannic acid was found to strongly inhibit tyrosine kinase activity of epidermal growth factor receptor (EGFr) in vitro (IC50 = 323 nM). In contrast, the inhibition by tannic acid of p60(c-src) tyrosine kinase (IC50 = 14 microM) a...
The gelatin/gum Arabic microcapsules encapsulating peppermint oil were prepared by complex coacervation using tannic acid as hardening agent. The effects of various parameters, including concentration of wall material, core material, tannic acid and tween80 were investigated on particle size and encapsulation efficiency. For statistical evaluation of the parameters, Taguchi method has been used...
this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...
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