[Revision of submucous resection of nasal septum].

Objective: To explore the clinical significance and surgical technique for revisionary submucous resection of nasal septum.

Methods: Thirty-two patients who had undergone nasal septal resection were evaluated rhinologically and the causes of unsuccessful septoplasty were analysed . Based on the location and extent of deviation, the status of residual cartilage and bone, and the age of the patients, one of three incisions was chosen during septal surgeries: (1) For 5 cases with anterior, 1 with inferior and 14 with superior deviation, a "U" shaped incision at the left side of anterior edge of septum cartilage was used.

Critical slowing down of the kinetic Gaussian model on hierarchical lattices.

The critical slowing down of the kinetic Gaussian model on hierarchical lattices is studied by means of a real-space time-dependent renormalization-group transformation. The dynamic critical exponent z and the exponent Delta are calculated. For hierarchical lattices with reducible generators, both the dynamic critical exponent z and the exponent Delta are independent of the fractal dimension Df of the lattice, the number of branches m, and the number of bonds per branch b of the generator--i.

Phase transitions of the Ashkin-Teller model including antiferromagnetic interactions on a type of diamond hierarchical lattice.

Using the real-space renormalization-group transformation, we study the phase transitions of the Ashkin-Teller model including the antiferromagnetic interactions on a type of diamond hierarchical lattices, of which the number of bonds per branch of the generator is odd. The isotropic Ashkin-Teller model and the anisotropic one are, respectively, investigated. We find that the phase diagram, for the isotropic Ashkin-Teller model, consists of five phases, two of which are associated with the partially antiferromagnetic ordering of the system, while the phase diagram, for the anisotropic Ashkin-Teller model, contains 11 phases, six of which are related to the partially antiferromagnetic ordering of the system.

Phase transitions of the anisotropic Ashkin-Teller model on a family of diamond-type hierarchical lattices.

The phase transitions of the anisotropic Ashkin-Teller model on a family of diamond-type hierarchical lattices is studied by means of the transfer-matrix method and the real-space renormalization-group transformation. We find that the phase diagram, for the ferromagnetic case, consists of five phases, i.e.