نتایج جستجو برای: direct exposure test

تعداد نتایج: 1473527  

Journal: :iranian endodontic journal 0
payman mehrvarzfar islamic azad university of medical science hengameh akhavan islamic azad university of medical science hossein rastgarian islamic azad university of medical science nahid mohammadzade akhlagi islamic azad university of medical science reza soleymanpour islamic azad university of medical science anahid ahmadi islamic azad university of medical science

introduction: an ideal intracanal medicament should be able to eliminate any remaining intracanal microorganism. the aim of this study was to compare the antimicrobial effects of bioglass 45s5 with calcium hydroxide on enterococcus ( e ) faecalis in-vitro . materials & methods: direct exposure test (det) was used to evaluate the antimicrobial effect of bioglass 45s5, calcium hydroxide and norma...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

‏‎the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis,a one-way anova experimental design was carried out. 24 sednior students of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inter...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

‏‎the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis , a one- way anova experimental design was carried out. 24 senior student of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inte...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده ادبیات و زبانهای خارجی 1393

rested on sociocultural theory (sct), this study attempted to examine the effect of written corrective feedback (wcf) followed by producing written languaging on developing writing accuracy over new tasks. to this aim, two intact iranian efl classes at the low-intermediate level were randomly assigned to two experimental groups: direct (n = 25) and indirect (n = 25). both groups wrote on a numb...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1392

the extent to which written corrective feedback on linguistic errors can play a role in helping l2 writers improve the accuracy of their writing continues to be an issue of interest to researchers and teachers since truscott (1996) mounted a case for its abolition. while there is growing empirical evidence that written corrective feedback can successfully target some types of linguistic error (...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1388

this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...

Journal: :iranian journal of cancer prevention 0
sudha sellappa dept. of biotechnology, school of life sciences, karpagam university, coimbatore, tamilnadu, india gem gemitha dept. of biotechnology, school of life sciences, karpagam university, coimbatore, tamilnadu, india

background: occupational and environmental exposures mostly represent complex mixture of genotoxic agents, however there is a wide variation in the specificity of biomarkers. exploration of correlations among biomarkers contributes to the further progress of molecular cancer epidemiology and to the selection of the optimal biomarkers for the investigation of human exposure to carcinogens. the a...

Journal: :iranian journal of parasitology 0
m mohebali ghh edrissian a nadim h hajjaran b akhoundi b hooshmand

visceral leishmaniasis (vl) is one of the most important parasitic diseases which is endemic in different parts of iran. serological studies were conducted by direct agglutination test (dat) on 12144 human serum samples, collected from four geographical zones of iran. sero prevalence, geographical distribution, clinical signs and symptoms for human visceral leishmaniasis based on dat for the pe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده ادبیات و علوم انسانی 1389

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

Journal: :international journal of occupational hygiene 0
mingyu wu department of occupational safety and health, grand valley state university, grand rapids, mi, america. steven e. guffey department of industrial and management systems engineering, west virginia university, morgantown, wv, america. brandon c. takacs safety & health extension, west virginia university, morgantown, wv, america. kevin michael michael & associates, inc., state college, pa, america.

researchers suggested that the individual fit test be conducted to estimate the protection effectiveness of workers’ hearing protection device (hpd) while working. practically, it is convenient to conduct single, instead of multiple, fit test measurement. this study examined if a single trial of earplug fit test can represent multiple performances. additionally, it investigated how much noise e...

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