the role of competition in healthcare is much debated. despite a wealth of international experience in relation to competition, evidence is mixed and contested and the debate about the potential role for competition is often polarised. this paper considers briefly some of the reasons for this, focusing on what is meant by “competition in healthcare” and why it is more valuable to think about th...

the term “system” is defined as «elements standing interaction». this implies that a change in any given element should bring about changes in other elements of the system and thus may be used to identify the boundaries of a system. a system can be a machine, a man, or a community. each of these may be part of a greater system (super system) or include several smaller systems (subsystems). syst...

the presentation will focus on the key areas that are essential to build a comprehensive policy towards reducing child injury and fatalities. the presentation will focus on the importance of the public awareness (education on the use of child restraint systems), the need to have an overall road safety programme, law enforcement (mandatory use of protection systems for children in car) and final...

in this research, the effects of the addition of powdered activated carbon (pac) into the aeration zone of an activated-sludge (as) system for treating tehran oil refinery effluent, was investigated during more than 12 months in a pact pilot-scale model. besides the evaluation of organics removal efficiency and determination of basic design factors kinetic coefficients, a series of experiments ...

background : pain is one of the main protests of inflammatory diseases, hence, understanding the mechanisms which involved in the induction and persistence of pain is essential. microglia is a contributing factor in the onset and maintenance of inflammation. increased microglial   activation increases the level of central pro-inflammatory cytokines and the development of central sensitization f...

ae is a serious medical condition in which the immune system attacks the brain, impairing function. with rapid diagnosis and appropriate treatment, many patients recover most or all functions. however, not all patients experience full recovery; with approximately 6% mortality and other patients who never regain significant brain and/or bodily functions. autoimmune encephalitis can produce a wid...

introduction: ordered subset expectation maximization (osem), is an effective iterative method for spect image reconstruction. the aim of this study is the evaluation of the role of system matrix in osem image reconstruction method using four different physical beam radiation models with three detection configurations. methods: spect was done with an arc of 180 degree in 32 projections after i...