نتایج جستجو برای: 60 and mn
تعداد نتایج: 16877474 فیلتر نتایج به سال:
abstract this study examined the relationship between noticing pronunciation and the improvement pronunciation by administering a 50 item story, as proficiency- test in order to investigate the effectiveness of noticing pronunciation on the improvement of pronunciation. accordingly 60 qualified students were selected and assigned to the two groups of experimental and control randomly, each gr...
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
BACKGROUND Micronutrient inadequate intake is responsible of pathological deficiencies and there is a need of assessing the effectiveness of metal supplementation, frequently proposed to rebalance poor diets. Manganese (Mn) is present in many enzymatic intracellular systems crucial for the regulation of cell metabolism, and is contained in commercially available metal supplements. METHODS We ...
OBJECTIVE To investigate the effect of increasing Mn+2 concentrations on superoxide dismutase 2 (SOD2) activity in pre-senescent and senescent cultured fibroblasts, and to determine the Km Mn+2 values required to achieve maximal SOD2 activities in such cells. MATERIALS AND METHODS SOD2 activities, and superoxide anion (SOA) generation rates, were assayed in mitochondrial sonicates of young pa...
Films of cerium-doped LaMnO3, which has been intensively discussed as an electron-doped counterpart to hole-doped mixed-valence lanthanum manganites during the past decade, were analyzed by x-ray photoemission spectroscopy with respect to their manganese valence under photoexcitation. The comparative analysis of the Mn 3s exchange splitting of La0.7Ce0.3MnO3 (LCeMO) films in the dark and under ...
Background: The aim of this research was to determine the Mn superoxide dismutase (Mn SOD) gene expression and the impact of oxidant and inflammatory markers on Mn SOD gene expression in active men and women. Methods: This research was a semi-experimental with repetitious measurement, and 24 active men (12) and women (12) (21-23 years) voluntarily participated in this research after ...
nitrate and ammonium forms of nitrogen are being applied to improve plant growth and uptake of other nutrients. given that the effect of application of different nitrate to ammonium ratios accompanied by other fertilizers (i.e. fe, mn and zn) has not been studied on wheat growth as well as uptake of fe, mn and zn, three glasshouse pot studies were conducted with factorial arrangement of treatme...
why some learners are willing to communicate in english, concurrently others are not, has been an intensive investigation in l2 education. willingness to communicate (wtc) proposed as initiating to communicate while given a choice has recently played a crucial role in l2 learning. it was hypothesized that wtc would be associated with language learning orientations (llos) as well as social suppo...
The structure and chemical composition of grain boundaries in GaSb<Mn> magnetic semiconductors have been investigated. We determined that quenching the GaSb melt with 2% Mn results formation a textured polycrystal (111). texture are formed by split 60 degree dislocations <110> dislocation lines. Microinclusions based on ferromagnetic compound MnSb located stacking faults dislocation...
Aim. To determine whether adolescents with type 1 diabetes (T1D) have morphological changes of the corneal nerve fibers and reduced smell taste function compared to healthy control subjects as a sign cranial affection evaluate possible associated risk factors for affection. Methods. The study was part T1DANES including 60 (15–<19 years) 23 age-matched controls. First, clinical biochemical da...
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