a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...

E-learning is one of the new ways of learning in the present era. Thus, for the efficiency and the optimal use of E-learning capacities, requires identifying and eliminating the disadvantages ahead the purpose of this study was the pathology of E-learning courses in the National Iranian Gas Company based on the three-branch model. Thus, a qualitative approach and phenomenological study was adop...

the purpose of this study is to investigate and explore the causes of identity crisis as one of the debilitating consequences of colonial project after the withdrawal of colonial power. in order to do justice to the full-length severity of displacement that was the fruit of indentureship, v. s. naipauls west indian epic, a house for mr biswas, has been scrutinized with the main focus being the ...

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

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 ...

Background: recently, many changes have been made in medical education all over the world. For this reason, students’ perception of the educational environment has attracted attention. Goal of this research is to compare perception of the students who are passing training courses with the students who are passing theoretical courses and compare two genders and different fields of study in Gonab...

Following the outbreak of coronavirus in the world, Iranian universities embraced electronic teaching. The purpose of this study was to investigate the attitude of the students in the Faculty of Foreign Languages and Literature of Tehran University towards this type of education in bachelor and master levels. With this aim and based on Davis' technology acceptance model, a researcher-made quest...