Phase diagram of the two-channel kondo lattice model in one dimension.

Employing the density matrix renormalization group method and strong-coupling perturbation theory, we study the phase diagram of the SU(2)xSU(2) Kondo lattice model in one dimension. We show that, at quarter filling, the system can exist in two phases depending on the coupling strength. The weak-coupling phase is dominated by RKKY exchange correlations, while the strong-coupling phase is characterized by strong antiferromagnetic correlations of the channel degree of freedom.

Substandard care in immigrant versus indigenous maternal deaths in The Netherlands.

As part of the Confidential Enquiry into the Causes of Maternal Deaths in The Netherlands, substandard care was assessed in immigrant versus indigenous maternal deaths. Except for substandard care related to the women's and relatives' decisions, substandard care factors were hypothesised to occur in similar frequency among both groups of women. The results, however, indicate that substandard care factors related to all aspects of care were disproportionately more frequent in immigrant women.

History and use of oxytocics.

The most widely known oxytocic drug that can be used for the induction of labor or post-partum is oxytocin. In 1954, the american biochemist Vincent du Vigneaud was the first to describe an octapeptide amide with the hormonal activity of oxytocin. One year later, he was able to synthesize this octapeptide amide.