abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

‏‎this study investigated the effect of prior knowledge on the listening comprehension performance of fl learners. twenty students, male and female, drawn from the two intact groups of the senior and junior english language and literature majors were chosen as the participants of this study . the two groups were then randomly assigned into the experimental and control group. the experimental gr...

bserved by many teachers that most of the time, mumbling and searching for their intended words, students complain why they have forgotten the words they have learned in the previous semesters. they ask for some new ways that may help them to recall and apply the learned words more efficiently, since as they declare one of the most important skills in foreign language learning is having a g...

the purpose of this study was to find the relationship between critical thinking and self-regulation with reading comprehension of iranian female elementary language learners. the present study is a correlational one having a descriptive design. two questionnaires, critical thinking questionnaire and self-regulation questionnaire which were valid and reliable questionnaires and four reading com...

Objective: This article probesto answer that which are the strengths, weaknesses, opportunities and threats of citizens’ participation in civic affairs in Tehran? This is achieved through studying social, cultural, economic, politicalmanagerial, legal, and spatial-physical aspects of the subject -- providing the basis upon which planners can formulate strategies and models for citizens’ pa...

Objective: This article probesto answer that which are the strengths, weaknesses, opportunities and threats of citizens’ participation in civic affairs in Tehran? This is achieved through studying social, cultural, economic, politicalmanagerial, legal, and spatial-physical aspects of the subject -- providing the basis upon which planners can formulate strategies and models for citizens’ pa...

Background & Aims: Detecting influential factors of sexual dysfunction could be essential in preventive and intervention strategies. The aim of this qualitative study was to explore the women’s understanding of the origin of their sexual problems. Materials & Methods: Fifteen married women with sexual dysfunction aged 21-42 were interviewed in person as they were referred to Tehran University o...

nowadays,tourism industry considered as one of the main sources of income of a country.unfortunately and despite of owning plenty of cultural historical and natural attractions, iran has not reached to a proper position in this field. besides, the historical cities of a country are considered as the income resource and national wealth of it. qazvin with a rich cultural precedent, have suitable ...

in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...