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An approach to reversibly control the curling and unfolding of graphene hybrid materials by porphyrin interactions on the basal planes of graphene has been developed, and the curled graphene hybrid materials have enhanced photoelectrochemical and optical limiting performance.
Despite the relatively recent advent of organizational ethics committees--created to address operational concerns that are not always appropriate for a clinical ethics committee to take on--there remain impediments (such as time constraints, limited ethical expertise, lack of senior leaders at the table, and waning interest of members) to the impact such a group might have. Committed to address...
In recent years, there has been an increase in public perception of the detrimental side-effects fluoride to human health due its effects on teeth and bones. Today, is a plethora techniques available for removal from drinking water. Among them, adsorption very prospective method because handy operation, cost efficiency, high selectivity. Along with efforts assist waters, extensive attention als...
in fact, this study focused on the following questions: 1. is there any difference between the effect of functional/notional approach and the structural approaches to language teaching on the proficiency test of efl learners? 2. can a rather innovative language test referred to as "functional test" ge devised so so to measure the proficiency test of efl learners, and thus be as much reliable an...
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