background: hospital is a place to provide medical services. it is affected by noise pollution sources that can be associated with negative impacts on health and comfort status of the staff members and patients. the aim of this study was to measure noise levels in different wards of hospitals and to determine the irritation caused by noise among the hospital staff members in hamadan, iran. meth...

the present study concerned with the development and characterization of metronidazole microcapsules prepared by thermal change method using different ratios (1:1, 1:2 and 1:4) of ethyl cellulose in order to select the best microcapsule formulation with a good encapsulation efficiency and drug release profile. the obtained microcapsules were discrete, spherical with free flowing properties and ...