Development of a new atmospheric pressure plasmaspray ionization for ambient mass spectrometry.

A new atmospheric pressure ionization method, plasmaspray ionization, termed as PSI, was developed to be an alternative ambient ion source for mass spectrometry. It comprises a plasma jet device and a sample spray part. While the nonthermal plasma jet strikes the surface of stainless steel tube out of the spray capillary, the sprayed sample will be ionized with the assistant of auxiliary gas. Although PSI is a little bit more complex than electrospray ionization (ESI) in instrument, it shows both better linearity and higher sensitivity for organic compounds. For protein samples, it presents wider distributions of multiply charged ions and higher mass resolution without sacrificing any sensitivity. For the mechanism of PSI, the charge build-up process on the tip of capillary should play a key role for the ion formation, and the stimulated pulsed voltage on the flow tube will promote the ion aggregation speed until the charge density is high enough. PSI source contains the features of plasma ionization and ESI and can be considered as a novel combo bridging these techniques. These results reflect that this method of PSI can be applied and further developed as a versatile new ion source for a wild range of organic and biological samples.

Surgical treatment of acquired ear defect / 中华整形外科杂志

<p><b>OBJECTIVE</b>To explore surgical procedure for the treatment of acquired ear defect.</p><p><b>METHODS</b>The ear reconstruction was carried out by using soft tissue skin expander and autogenous rib cartilage framework, Medpor framework, auricular prosthesis, and so on.</p><p><b>RESULTS</b>The long-term follow-ups showed that the flap of reconstructed ear was ruddy, soft, with normal sensory function. The cartilage framework had no degeneration, absorption and deformation. The Medpor framework had no deformation. The contour of auricular prosthesis was vivid and the implant system was stable. In addition, the reconstructed ears were coincidence with the normal side on location, form and dimension.</p><p><b>CONCLUSIONS</b>It may be a major method for traumatic ear reconstruction that the soft tissue skin expander with autogenous rib cartilage framework could be applied at present time. In some special circumstances, the soft tissue skin expander with Medpor framework and auricular prosthesis may be other helpful choices.</p>

Clinical significance of vascular distribution type of the expanded skin in the mastoid region in congenital microtia / 中华整形外科杂志

<p><b>OBJECTIVE</b>To classify the blood vessel distribution of the expanded skin in the mastoid region and its relevance to reasonable and reliable design of the expanded flap for auricular reconstruction in congenital microtia.</p><p><b>METHODS</b>The blood vessel distribution of the expanded skin in the mastoid region was observed by light permeation test. The expanded flaps with different ratio of length to width were designed according to their blood vessel distribution types.</p><p><b>RESULTS</b>The vascular distribution of the expanded skin in 403 cases was divided into five types. All the flaps survived completely.</p><p><b>CONCLUSIONS</b>The blood vessel distribution type of the expanded skin in mastoid region has great significance for the design of post-auricular expanded flap in auricular reconstruction.</p>

Classification and repairment of "butterfly ear" deformity / 中华整形外科杂志

<p><b>OBJECTIVE</b>To classify and repair "Butterfly Ear" deformity which presents characters of dysplasia of inferior auricle of ear and congenital bat ear.</p><p><b>METHOD</b>The repairment procedures include: type I: auricular cartilage flap inversion folding technique. type II: local ear skin flap. type III: soft tissue expander autogenous, rib cartilage framework.</p><p><b>RESULTS</b>The method was used in 19 cases from October 2001 to March 2005. Postoperative follow-up showed satisfactory results in all cases.</p><p><b>CONCLUSION</b>According to "Butterfly Ear" deformity classification, different technique could be applied.</p>