Biphenylene carbon sheets Although graphene forms two-dimensional sheets, other arrangements of rings could also assemble as flat sheers. Fan et al. synthesized an ultraflat biphenylene sheet consisting sp 2 -hybridized atoms forming four-, six-, and eight-membered on a gold surface. An adsorbed halogenated terphenyl molecule undergoes two-step interpolymer dehydrofluorination polymerization th...

background and purpose: consideringbackground and purpose: considering the importance and necessity of competency-based education at a global level and with respect to globalization and the requirement of minimum competencies in medical fields, medical education communities and organizations worldwide have tried to determine the competencies, present frameworks and education models to respond t...

The van der Waals liquid orthoterphenyl has long been used as a model system in the study of the glass transition. Motivated by mode–coupling theory, extensive experiments have been undertaken to monitor the onset of structural relaxation on microscopic time and length scales. Using in particular quasielastic neutron scattering, the decay of density and tagged–particle correlations has been mea...