in order to present a new and high performance structure of pem fuel cell and study the influence of the flow direction and distribution on the rate of reactants diffusion, three novel models of vertical reactant flow injection into the anode and cathode reaction area field have been introduced. they consist of one inlet and two inlets and also a continuous channel. the governing equations on t...

Background: Hospital accreditation is an external evaluation of a hospital’s structures, processes and results by an independent professional accreditation body using pre-established optimum standards. Accreditation has an important role in improving the quality, safety, effectiveness and efficiency of hospital services. This study aimed to examine the effects of hospital accreditation program ...

continuous improvement in performance is essential for the success of the paperboard industry. strength improvement has always been an important consideration for papermakers. strength increasers are critical components for manufacturing of paperboard. these materials provide not only the required strength quality to paper products but also can improve the machine productivity and process effic...

Continuous Improvement is a well-known and consolidated concept in literature and practice and is considered vital in today’s business environment. In 2003 a survey, as part of the international CINet survey, has been performed in the Netherlands in order to gain insight into the current practices and the evolution of continuous improvement over the past 5 years. From a sample of 51 companies, ...

learning rapidly and competently has become a pre-eminent strategy for improving organizational performance in the new knowledge era. improving dynamic learning capability is an exclusive strategy for corporate success in construction industry. thus engineering design firms should implement ol to accomplish a state of readiness for change and develop a competence to respond and identify future ...

abstract accurate water measurement and delivery are basic issues in irrigation networks management and performance. in this regard, baffle modules have been considered as appropriate means for delivering almost constant discharge within a specific range of upstream water variation. the structure is meant for low discharge delivery and could be employed in farm irrigation. however, the design c...