The CO oxidation reaction on (Co,Mg,Mn,Ni,Zn)(Al,Co,Cr,Fe,Mn)O and (Cr,Mn,Fe,Co,Ni)O high entropy spinel oxides was studied for what concerns its mechanism by means of soft X-ray absorption spectroscopy. In the (Cr,Mn,Fe,Co,Ni)O high entropy spinel, CO oxidation starts at 150 °C, and complete conversion to CO is obtained at 300 °C. For the (Co,Mg,Mn,Ni,Zn)(Al,Co,Cr,Fe,Mn)O spinel oxides, in contrast, the reaction starts at 200 °C, and complete conversion needs temperatures of the order of 350 °C.
View Article and Find Full Text PDFThe temperature-resolved structure evolution of quinary and quaternary equimolar oxides containing Mg, Ni, Zn, Co, and Cu is investigated by in situ synchrotron diffraction. Important structural modifications occur already at mild temperatures and depend on the elements involved. All quaternary compounds with χ(Cu) = 0.
View Article and Find Full Text PDFScientific and industrial reasons dictate the study of the solid state of imepitoin, a highly safe and tolerable anticonvulsant drug used in the therapy of epileptic dogs that was approved in the Europe Union in 2013. Our investigations allowed us to discover the existence of a new polymorph of imepitoin, which finds itself in a monotropic relationship with the crystalline form (polymorph I) already known and present on the market. This form (polymorph II), obtained by crystallization from xylene, remains metastable under ambient conditions for at least 1 year.
View Article and Find Full Text PDFNeonatal resuscitation is an uncommon, albeit critical task that is more likely to succeed if performed properly and promptly. In this context, simulation is an appropriate way for training and assessing the abilities of all medical staff involved in delivery room care. Recent studies have shown that learning is enhanced if the simulation experience is realistic and engaging.
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