the purpose of the present study is to find out whether bilinguals of khuzestan-arab origin or monolinguals of iranian origin code-switch during learning or speaking english and which group is more susceptible to code-switch. to this end, the students of 24 classes from high schools and pre- university centers were screened out, and interviewed and their voices and code-switchings were recorded...

abstract this study was carried out to compare disinfecting effects of nanosilver with other feed disinfectants on layer hen performance, immune system, gastrointestinal microflora and intestinal morphology. total of 90 layers (lsl) were divided into five groups consisting: 1-control, 2- formalin (200 ppm), 3- formaycin (200 ppm), 4- nanosilver in drinking water (7.5 ppm) and 5-nanosilver in f...

the purpose of the research is to examine if integrating cooperative learning into vocabulary learning helps to increase word recognition of students in an elementary school in iran. it tries to investigate whether cooperative learning approach enables students to improve their language learning. this research used stad (students team achievement division) as a cooperative model in this study. ...

Background & Aim: The role of caffeine as a cerebral stimulant for improving respiratory indicators in the mechanically ventilated patients is unclear. The purpose of this study was to evaluate the effect of coffee consumption on respiratory indicators among the mechanically ventilated patients in the Intensive Care Unit (ICU). Methods & Materials: A double blind, randomized clinical trial (IR...

Introduction: Alcea rosea is on the list of medicinal plants with the potential for a serum lipid-lowering effect in patients with lipid disorder. Cadmium chloride causes lipid disorders. This study investigated the protective effects of hydroalcoholic extract of the aerial parts of Alcea rosea on serum lipid concentration disorders in male rats exposed to cadmium chloride Materials and Me...

Background: Embryonic period is the most sensitive stage of the human life in confronting with taken material by mother. The goal of the present study was to evaluate the effect of folic acid overdose on days 8, 9, and 10 of gestation on the pancreatic tissue. Materials and Methods: A total of 20 pregnant mice were equally divided into four groups. The control group received no injection. T...