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노영수(Young-Su Roh),박상택(Sang-Taek Park),김전원(Jun-Won Kim),송길목(Kil-Mok Shong) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
Recently, the dependence of the electric energy is increased in accordance with a growth of industry. Therefore, scientific investigation is needed for the security of electrical safety and the judgement of accident causes. Accordingly, this paper consist of the analysis for the carbonization patterns of phenolic resin and the mechanism. As the follows, spider-legs as a carbide are generated around the rods, when the electric current flows on the surface of phenolic resin. The IR absorption peak generated by the thermal effects is appeared at about 1720㎝?¹. As the case of Joule's heat, the crystal of a carbide is generated because of the rarefied oxygen. It's estimated that the formation of carbonization conductivity as the currents are easily flowed.
노영수(Young Soo Rho) 대한두경부종양학회 2008 대한두경부 종양학회지 Vol.24 No.1
The most important concern to do parotidectomy is correct identification of the facial nerve and preservation of the nerve function. Many descriptions for the localization and branching types of the facial nerve trunk have existed. During the parotid surgery, it is necessary to have knowledges about the incidence and prognostic aspect of a invasion of the facial nerve by the parotid tumors. The method of the dissection and the surgical extent of the parotid gland would be decided not only by the anatomic variation of the facial nerve. but also the size and location of the tumor. Invasion of the facial nerve in parotid malignancies is the most significant factors affecting the prognosis, so radical parotidectomy which consists of the total extirpation of the parotid gland in conjunction with resection of the facial nerve is often required for proper management. Radical parotidectomy is advocated for the surgical treat-ment of high grade malignancies and in selective recurrent benign tumors intimately involving the facial nerve. Unfortunately, the morphologic and functional deficits created by sacrificing the facial nerve can be emotionally and physically traumatizing to the patient. Therefore, when the facial nerve is sacrificed, immediate reconstruction of the facial nerve should be necessary. Immediate nerve repair with direct anastomosis of the resected nerve ends or placement of a cable nerve graft provides the better cosmetic and functional results. Surgical resection remains the mainstay of treatment for cancer of the parotid gland, and there is general agree-ment that facial nerve should not be sacrificed unless the tumor is adherent to, or surrounds the nerve. The following statement is described general principles of troublesome management of the facial nerve during surgery for parotid tumor.