Post cholecystectomy gossypiboma mimicking a liver hydatid cyst: comprehensive literature review.
Iranian Red Crescent medical journal, cilt.17, sa.4, 2015 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 17 Sayı: 4
- Basım Tarihi: 2015
- Doi Numarası: 10.5812/ircmj.17(4)2015.22001
- Dergi Adı: Iranian Red Crescent medical journal
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
- Çukurova Üniversitesi Adresli: Hayır
Özet
Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two-dimensional. Spin wave velocities within the Fe layer and the magnitude of the spin gap are similar to the \textit{A}Fe$_2$As$_2$ based materials. However, the ratio of interlayer and intralayer exchange is found to be less than $\sim 10^{-4}$ in LaFeAsO, very similar to the cuprates, and $\sim$ 100 times smaller than that found in \textit{A}Fe$_2$As$_2$ compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent compounds of the iron arsenides and weak 3-D interactions may limit the maximum attainable superconducting $T_{c}$.