Harmony search: Current studies and uses on healthcare systems.

One of the popular metaheuristic search algorithms is Harmony Search (HS). It has been verified that HS can find solutions to optimization problems due to its balanced exploratory and convergence behavior and its simple and flexible structure. This capability makes the algorithm preferable to be applied in several real-world applications in various fields, including healthcare systems, different engineering fields, and computer science.

One-pot solvent-free synthesis of 2,3-dihydro-2-substituted-1H-naphtho[1,2-e][1,3]oxazine derivatives using FeO@nano-cellulose/TiCl as a bio-based and recyclable magnetic nano-catalyst.

The present study describes an efficient and environmentally benign protocol for the synthesis of 2,3-dihydro-2-substituted-1H-naphtho[1,2-e][1,3]oxazine derivatives. Synthesis is done by one-pot three-component condensation of 2-naphthol, formaldehyde, and primary amines in the presence of FeO@nano-cellulose/TiCl as a bio-based magnetic nano-catalyst under solvent-free conditions at room temperature grinding. This green procedure offers the advantages of high yield, short reaction time, environmental friendliness, easy workup, simple magnetic recovery of the catalyst and its reusability up to ten times without significant loss of catalytic activity.

An investigation on the level of awareness, attitude, and interest among medicine, dentistry, and pharmacy students toward their majors on entering university: The case of Islamic Azad University, Tehran medical sciences branch.

Introduction: Having awareness, interest, and positive attitude toward one's fields of study leads to the development of a compatibility between demands and expectations on the one hand and future career on the other hand. This study was carried out to determine the level of awareness, attitude, and interest of medicine, dentistry, and pharmacy students of Islamic Azad University, Tehran Medical Sciences Branch toward their own field of study on entering university.

Materials And Methods: This research is a basic descriptive study conducted on 273 students who had just entered university.