in this study, cui nanoparticles as an efficient catalyst was used for the synthesis of 14-phenyl-8h-dibenzo[a,i]xanthene-8,13(14h)-diones using aldehydes, 2-naphthol and 2-hydroxynaphthalene-1,4-dione in aqueous media. in this study, it was found that water was the most effective solvent compared to others. among several catalysts that were tested for this multi-component synthesis, cui nanopa...

How might mankind enjoy the fruits of an advanced civilization without endangering the viability of planet Earth for future generations? That is the fundamental challenge that we confront in the 21st century. In a time when the comforts and pleasures that can be derived from the products of modern technology are accessible for a significant portion of the world’s population, how can we manufact...

Pyrotechnic delays are used in commercial and military items requiring a time delay between two energetic events. For example, US Army hand-held signals (HHS) use a delay element to properly sequence the expulsion of illuminating rounds at the rockets’ apex. Many military delay formulations contain barium, lead, chromates, and perchlorates. The US Army is reformulating pyrotechnic items to remo...

Teaching Environmentally Benign Manufacturing (EBM) presents the general challenges of teaching an application rather than a discipline. This is not too different from the challenges of teaching manufacturing about ten years ago. In that case we could rely heavily on successful practice and then develop principles to explain those successes. The principal success at that time was the Toyota Pro...

a simple, clean, and environmentally benign three-component process for the synthesis of 2-amino-4hchromenes using [mim]cl, as an efficient catalyst under solvent-free conditions are described. a wide range of aromatic aldehydes easily undergoes condensations with 1-naphthol and malononitrile under solvent-free conditions to afford the desired products of good purity in excellent yields. taking...

In the last decade a rapidly growing interest in electrification of transport passenger cars could be noticed. The major motivation are the problems related to the use of fossil fuels in the transport sector such as crude oil dependency, greenhouse gas emissions (GHG) and air pollution. Electric vehicles (EV) are often presented as zero-emission vehicles. However, from a lifecycle CO2 perspecti...