the method has been developed and validated for the determination of hydroquinone in liposomal formulation. the samples were dissolved in methanol and evaluated in 293 nm. the validation parameters such as linearity, accuracy, precision, specificity, limit of detection (lod) and limit of quantitation (loq) were determined. the calibration curve was linear in 1-50 µg /ml range of hydroquinone an...

there is a great interest in developing rapid analytical methods and provide appropriate parametersfor quantitative analysis of compounds derived from refractory pollutants. such methods are important forroutine quality control analysis of an effluent before being discharged into the environment. therefore, a rapid methodology for identification and quantification of some aliphatic acids is pro...

conclusions the farsi version of the pass is a valid and reliable tool to measure academic procrastination in iranian undergraduate medical students. background procrastination is a common behavior which affects different aspects of life. the procrastination assessment scale-student (pass) evaluates academic procrastination apropos its frequency and reasons. objectives the aims of the present s...

background and aim : hearing impairment affects educational skills of hearing-impaired students, but its negative impact is far more on reading and writing skills. this study was per­formed to design and validate an educational software to improve writing skills. methods : in this study, the mixed-methods approach was used. in the first step, the qualitative method was used to design the educat...

this paper describes two rapid, sensitive and specific methods for the determination of fulvestrant in pharmaceutical preparations by high performance liquid chromatography (hplc) and linear sweep voltammetry (lsv). hplc method was used to study the degradation behaviour. fulvestrant was subjected to degradation under the conditions of hydrolysis (acid and alkali), oxidation (30% h2o2). the lin...

just like any other process, vaccine manufacturing procedures are defined as a series of interrelated functions and activities using a variety of specified actions and equipment designed to produce a defined product. to assure the reproducibility and consistency of such processes, they must be carried out using validated equipment and under the established procedures that meet all the acceptanc...

evaluation of functional disability using proper instruments, like health assessment questionnaire (haq) in patients with rheumatoid arthritis (ra), is necessary not only for quality of life assessment, but also as a useful marker for disease activity. haq has been translated into many languages. to validate the persian version of stanford haq. persian version of the haq (pe-haq) with culturall...

the present work describes a reverse phase hplc method for the quantitation of drotaverine hydrochloride and mefenamic acid in human plasma. organic solvent system used for liquid extraction composed of dichloromethane, and isopropyl alcohol in the ratio 80:20 (v/v). the compounds were separated on a thermo bds hypersil c8 (25.0 cm×4.6 mm, 5 µm particle size) column in isocratic mode with a mix...