نتایج جستجو برای: minimum number of units mnu
تعداد نتایج: 21190967 فیلتر نتایج به سال:
the present study was concerned with exploring the frequency and linguistic focus of corrective feedback types given by novice and experienced female teachers working with young learners and compared it with those of elementary classes for adults. moreover, it aimed at measuring learners’ acknowledgement of teachers’ corrective feedback in the form of uptake in relation to linguistic coverage o...
چکیده ندارد.
The activity of de novo DNA (cytosine-5-)-methyltransferase (DNA methylase) in various rat tissues after administration of a single dose of A/-methyl-A/-nitrosourea (MNU) has been analyzed. The total and specific activities of the DNA methylase of the brain, where tumor induction is important, are increased. In kidney, the DNA methylase activity first increases up to 16 h and decreases afterwar...
abstract although music possesses some kind of power and using it has been welcome by many students in language classrooms, it seems that they take a non-serious image of the lesson while listening to songs and they may think that it is a matter of fun. the main objective of the present study was to investigate whether learning a foreign language through musical texts (songs) can have an impac...
abstract over the past two decades, applied linguists and language teachers have shown a great deal of interest in genre-centered approaches , mainly because of pedagogic concerns . this has been due to the need to help non-native readers enhance their ability to understand academic and scientific texts. following swales’ (1981) works on genre analysis, studies of different sections of resear...
Dose-response relationships for the induction of mammary tumors by a single i.p. injection of 1-methyl-1-nitrosourea (MNU) were studied. Groups of 30 female Sprague-Dawley rats were given i.p. injections of 50, 37.5, 25, 12.5, or 0 mg MNU/kg body weight at 50 days of age. Animals were palpated for tumor detection twice weekly throughout a 28-week observation period. Administration of MNU i.p. c...
Incubation of HeLa cells with the anticancer agent N-methyl-N-nitrosourea (MNU) results in: (a) depression of intracellular nicotinamide adenine dinucleotide levels; (b) stimulation of the chromatin-associated, chromosomal protein-modifying enzyme polyadenosine diphosphoribose [poly(ADP-ribose)] polymerase, which uses nicotinamide adenine dinucleotide as substrate; and (c) some fragmentation of...
BACKGROUND: Methylnitrosourea (MNU), an alkylating agent derived from creatinine metabolism, is cytotoxic, genotoxic, and mutagenic. Mid-gestational exposure to MNU leads to distal limb defects in mice. Previous studies have shown that nonspecific maternal immune stimulation protects against MNU-induced teratogenesis. A role for immune-mediated placental improvement in this effect remains uncer...
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