This study aimed to test two methods for recovering nickel waste arising from practical classes in chemistry and turn them into nickel chloride. The first method consists in precipitating the residue with pH change in the ...

The NIR and IR spectroscopic properties of the cyanide-bridged complex, trans-[Ru(dmap)4{(μ-CN)Ru(py)4Cl}2]3+ (py=pyridine, dmap=4-dimethylaminopyridine) provide strong evidence that this trimetallic ion behaves as a ...

The contamination of wastewater with metals and the use of biotechnologies to remove them is commonly discussed in theoretical biology, microbiology and biotechnology classes aimed at undergraduate students. This work ...

The five-membered, nitrogen-containing pyrroline ring is a privileged structure. This ring is present in many bioactive compounds from natural sources. Pyrrolines - the dihydro derivatives of pyrroles - have three structural ...

Several boundary value problems are solved for a new class of constitutive equation, where the left Cauchy-Green stretch tensor is given as a non-linear function of the Cauchy stress tensor. Some constitutive inequalities ...

Tin chemistry sometimes is considered boring, colourless and with irrelevant applications. Archaeological, historical and technological facts show otherwise. These facts demonstrate that tin became vital for man in a distant ...