a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

teachers beliefs have usually been left unattended in the realm of educational research in iranian context. one of those beliefs which seems to impact teachers performance in the classroom is their sense of self-efficacy, which refers to teachers belief in their ability to enhance student achievement and in bringing about positive learning outcomes. the present study aimed to investigate the pr...

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

toury (1978:200) believes that translation is a kind of activity which inevitably involves at least two languages and two cultural traditions. being polite while asking for something takes place differently in different cultures and languages, therefore various strategies may be applied for making requests and also translation of them in order not to disturb or threaten the face or better to sa...

there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...

Background: Previous investigations have shown that pregnancy-associated plasma protein-A (PAPP-A) levels are associated with adverse pregnancy outcomes including intrauterine growth restriction (IUGR) fetuses as well as preterm delivery. The aim of this study was to determine the rate of preterm delivery in women with low PAPP-A and at intermediate risk for chromosomal abnormalities in the fir...

abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...

با توجه به اهمیت تالاب شادگان در محیط زیست ایران و افزایش آلودگی های منطقه، در پژوهش حاضر غلظت کل و منشایابی فلزات سنگین در رسوب تالاب شادگان مورد بررسی قرار گرفت. بدین منظور نمونه برداری از رسوب سطحی 10 ایستگاه با 3 تکرار صورت گرفت. جهت تعیین غلظت کل فلزات رسوب از روش (direct aqua regia)و برای آنالیز غلظت های فلزات در بخش های ژئوشیمیایی رسوب از روش استخراج پی در پی استفاده شد. آماده سازی نمونه...