Theoretical study on the molecular stacking interactions and charge transport properties of triazasumanene crystals - from explanation to prediction.

Computational analyses of the solid-state properties of triazasumanene (TAS), a C-symmetric nitrogen-doped sumanene derivative, were carried out in this work. The present studies are mainly divided into two parts. In the first part, we demonstrated the differences in the interactions of the crystal packing between the racemic and the homochiral structures: the former having perpendicular columnar packing and the latter forming slipped helical packing.

Reconstruction of auricular conchal defects with local flaps.

Reconstruction of the auricular conchal cavity is relatively difficult because of its unique structure, shape, and location. We compared different methods of repair of the auricular concha to determine the method that would cause the least injury to the donor site.The method selected was based on the location and size of the defect.

Negative pressure wound therapy combined with skin grafting improves surgical wound healing in the perianal area.

Management of large tissue defects resulting from local wide resection of perianal is a clinical challenge for surgeons. The aim of the present study was to investigate the efficacy of negative pressure wound therapy (NPWT) following skin grafting on perianal surgical wound healing.Included in this study were 12 patients with perianal tumors who received skin grafting after perianal tumor resection between December 2012 and December 2014.

An "oxhorn"-shaped V-Y advancement flap unilaterally pedicled on a nasal superficial musculoaponeurotic system for nasal reconstruction.

Background: Laterally based nasalis myocutaneous flaps pedicled on the superior nasal superficial musculoaponeurotic system (SMAS), which contains the bilateral dorsal nasal arteries, have not been utilized for the reconstruction of nasal defects.

Methods: According to the location and size of the nasal defects, a V-Y advancement nasalis myocutaneous flap was designed along the proximal alar groove and nasolabial fold. The flap was superficially elevated from the perichondrium, and the nasal SMAS above the flap was dissected as the unilateral pedicle.

[In vitro proliferation of rat Leydig cells].

Objective: To investigate the feasibility of in vitro proliferation of rat Leydig cells by modifying the cell culture system.

Methods: Leydig cells were isolated from three-week-old rats by a procedure combining collagenase dispersion, stainless steel mesh infiltration and differential adhesion. The isolated cells were cultured in DMEM/F12 and modified media for stem cell proliferation, and the proliferation of the cultured cells was evaluated by cell counting and MTP test.

[The treatment of lower eyelid retraction at the different degree].

Objective: To explore the effective methods for the correction of lower eyelid retraction at different degree.

Methods: 258 patients with lower eyelid retraction were treated in our department since 1999. The lower eyelid retraction could be divided into mild, moderate and severe degree.