Dye-sensitized solar cells offer an alternative source for renewable energy by means of converting sunlight into electricity. While there are many studies concerning the development of DSSCs, comprehensive mathematical modelling of the devices is still lacking. Recent mathematical models are based on diffusion equations of electron density in the conduction band of the nano-porous semiconductor in dye-sensitized solar cells.
View Article and Find Full Text PDFInt J Phytoremediation
August 2011
Phytoremediation at contaminated sites is often complicated by the presence of more than one chemical However, the effects of common co-contaminants such as ethylene glycol on the phytoremediation of other chemicals, e.g., 1,4-dioxane, is not well understood.
View Article and Find Full Text PDFThe reasons for significant disparities in asthma mortality are unclear. Maryland vital statistics and medical examiner data were used to examine timing, location, and circumstances of asthma deaths. We found that unexplained deaths increased substantially over the past 10 years and that young, male, and black asthmatics were more likely to die before hospital admission.
View Article and Find Full Text PDFObjective: Pediatric residency training programs need regular revision, but there is little evidence to support changes. The recent reduction in time spent in the newborn nursery may negatively affect the care of infants in pediatric practice. This survey was undertaken to assess the preparation of recent graduates of training programs with respect to newborn care in their current practice.
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