1- in a search directed to the reaction of compound)23(the cycloaddition reaction of 1,3- diphenylisobenzofurane)14(with p-benzoquinone)19(,followed by addition of cyclopentadiene was carried out.the specific spacial stracture of its ir,nmr,mass spectra. 2- in another attempt the kinetic stability and behavior of compounds)20(and)23(was studied.the main subject of this study was the highly reve...

on this project we try to calculated power of hydrogen on dycarbonil compound in different ways ; the first way is shoster way , for sain power of hydrogen notice the different power between central conforms on it and main conform that’s didn’t have hydrogen joint . or in other way different of energy between open and close form. second way, is average way? this is for way that studied conf...

    Background & Aim: Objective assessment of nasal airway is helpful in understanding nasal breathing function. Acoustic rhinometry is one of the most commonly used objective measurements of nasal airway. This test has the ability to measure cross-sectional areas of the nose in different distances and volume and also determines the site of minimal cross-sectional area. These variables are diff...

Background: Social gathering restrictions and quarantine for reducing the spread of coronavirus can reduce social interactions and cause mental health problems such as depression and anxiety. Objective This study aims to investigate the role of personality traits and health-promoting lifestyles in predicting anxiety and depression during the COVID-19 pandemic in Najafabad, Iran Methods: This ...