سیستم هیستامینرژیک مرکزی دارای تاثیرات تنظیمی بر رفتارهای شبه اضطرابی هم در حیوانات و هم در انسان است. این تاثیرات از طریق رسپتور h1 و h2 میانجیگری میشود. تست epm(elevatd plus-maze( برای بررسی تاثیرات اضطراب زایی یا اضطراب زدایی داروها در جوندگان بکار میرود. شواهد نشان می دهند که فعالیت (bnst) bed nucleus the stria terminalis رفتار شبه اضطرابی را در انسانها و حیوانات تنظیم می کند. در مطالعه حاض...

terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

Introduction: Studies show that chronic stress can lead to anxiety and depression. Basil (Ocimum basilicum L.) has antioxidant, anti-inflammatory, anti-apoptotic, anti-diabetic and anti-nociceptive properties. The aim of this study was to investigate the effect of basil hydro-alcoholic extract on chronic restraint stress-induced anxiety and depression in male Wistar rats. Methods: In this...

saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...

the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...