Colloidal quantum dots offer broad tuning of semiconductor band structure via the quantum size effect. In this paper, we present a detailed investigation on the influence of the thickness of colloidal lead sulfide (PbS) nanocrystals (active layer) to the photovoltaic performance of colloidal quantum dot solar cells. The PbS nanocrystals (QDs) were synthesized in a non-coordinating solvent, 1-oc...

the synthesis of the title compound is described. this compound was found to be active (3c) against a number of pathogenic microorganisms in vitro. it is a non-absorbable antibacterial topically and its pharmacologic studies revealed that it is a non-toxic agent with a wide range of safety. it proved to be effective in the prevention and treatment of pseudomonaswound infections in volunteer pat...

wind energy today, has attracted widespread interest from among a variety of sources of renewable energy in the world. owing to the increasing demand for production of electrical energy for electricity networks by using wind power, it is essential that wind power plants are actively incorporated in the network’s performance using an appropriate control system. in general, these wind power plant...

background and purpose: surveillance is a system of continuing health checks, is considered as a critical part of public health practice for planning and implantation of effective prevention and control interventions for communicable diseases in the region. the aim of this study was to determine the effects of an active method of data collection on the improvement of these diseases surveillance...