Computational and Experimental Investigations of Osmium-Rich Borides HfMOsB (M = Mn, Fe, Co): From Spin Glass to Room-Temperature Magnetic Behaviors.

The metal borides, HfMOsB (M = Mn, Fe, Co), which are the first Os-rich quaternary variants of the prolific TiCoB structure type, were investigated computationally and experimentally. In their crystal structures, osmium builds a network of prisms, in which the other elements are located. The magnetic M elements are found in face-connected Os square prisms leading to M-chains with intra- and interchain distances of about 3.

Oral and Systemic Effects of Xylitol Consumption.

Recent results of randomized trials testing the efficacy of xylitol in caries prevention have been conflicting. This narrative review reveals the sources of discrepancy. The following databases were searched for the terms "xylitol" or "artificial sweeteners" restricted to the English language: PubMed, Web of Science, Evidenced-Based Medicine, Scopus, and the Cochrane database.