The varying metallic antiferromagnetic correlations observed in iron-based superconductors are unified in a model consisting of both itinerant electrons and localized spins. The decisive factor is found to be the sensitive competition between the superexchange antiferromagnetism and the orbital-degenerate double-exchange ferromagnetism. Our results reveal the crucial role of Hund's rule couplin...

The World Wide Web has become an important source of information for tourists planning their vacation. So, destination recommendation systems supporting users in their decision making process by suggesting suitable holiday destinations or packages based on user profiles are a vivid area of research. Considering the complex and often tedious task to obtain such profiles we are exploring a new di...

we describe, the first case of phenobarbital-induced dress syndrome presenting as a lichenoïd eruption. a 49-year-old man had received phenobarbital for a cerebral metastasis. twenty-five days later, he developed a purplish skin eruption, odynophagia, oral mucosal erosion and fever. physical examination revealed a cervical lymphadenopathy and facial edema associated to a diffuse violaceous macu...

this is a picture presentation of myeloproliferative disorder developing to longitudinal melanonychia as a side effect of hydroxyurea. keywords: melanonychia, hydroxyurea, side effect.

this is a picture review of a case of orbital rhabdomyosarcoma. the course of patients diagnosis, treatment and outcome is briefly presented.

Some human populations in south-east Asia have foraged for a living in shallow coastal waters for generations. Could their eyes have adapted to these challenging conditions?