in this paper we focus on a continuously deteriorating two units series equipment which its failure can not be measured by cost criterion. for these types of systems avoiding failure during the actual operation of the system is extremely important. in this paper we determine inspection periods and maintenance policy in such a way that failure probability is limited to a pre-specified value and ...

Background and Objectives: Halal branding covers a wide range of economic activities including pharmaceuticals, cosmetics, health, textiles, clothing, leather, financial services, banking and tourism. Among the various forms of tourism, medical tourism has grown rapidly due to its competitive advantages. Therefore, the purpose of this study is to investigate halal branding as a strategy to deve...

Background: Methylphenidate (MPH), Ritalin, is one of the most common medications. The administration of Ritalin leads to increase of the activity of central nervous system. Ritalin may be used for maintaining alertness and improving of attention which may lead to increase of the risk of substance abuse in some cases. There is a little data about the effects of long term treatment with Methylph...

in this research, air sampling of workplaces was carried out by two methods (long - time and short - time). the mean formaldehyde concentration with long - time method in pathology labs, surgery and endoscopy sections were 0.96 0.25 and 0.13 ppm and with short - time method, 8 hours, was 3, 0.3 and 0.2 ppm. the mean formaldehyde concentration in pathology labs was above the standard values (tlv...

Long-acting contraceptives are the most effective reversible contraceptive methods. Increasing patients’ access to these may translate into fewer unintended pregnancies and lead substantial individual public health benefits. However, development of long-acting products can be complex challenging. This review provides ( a) an overview representative programs for antipsychotics as cases conceptua...