Abstract Introduction: Ethical behaviour is a fundamental feature of professional nursing.Objective: The present study aimed to determine challenges of premarital education program in Sink Accessories Iran.Materials and Methods: In this qualitative research, in-depth semi-structured interviews were conducted to collect information.Qualitative conte

Abstract Mercury (Hg) is a unique heavy metal toxicant found in numerous environmental and occupational settings.A major source of environmental Hg is artisanal and small-scale gold mining, whereby metallic mercury (Hg0) is used to concentrate gold from mined ore.If the Hg0-contaminated tailings are then subjected to cyanidation to extract any rema

The design of a propulsion system for each ship must take into consideration a large number of factors.Some important factors that will lead to obtaining an efficient propulsion system are: the integration of a large number of elements in a functional space, selection of suitable components, the efficiency assessment taking into account Copper func