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강우석,김영호,박경호,서명환,손은진,유신영,정종우 대한이비인후과학회 2011 대한이비인후과학회지 두경부외과학 Vol.54 No.10
Sudden sensorineural hearing loss is an emergent disease in otologic field. Because the etiology and pathological mechanism were not proven yet, treatment protocol was not established. Therefore, medications, duration, and dosage were different from each institute. In this review, authors collected and analyzed articles on sudden sensorineural hearing loss published during recent 11 years. From those, we described the recommendations on the criteria and method of diagnosis, tools for treatment and their results, and guideline for reporting results and follow up.
강우석,최병철,김화남 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.4
The purpose of this study is to investigate the characteristics of the simultaneous removal of PM and NOx on the CuNb-ZSM-5 SCR/DPF catalysts coated onto DPF substrate. NOx conversion by the CuNb-ZSM-5catalyst was higher than those by Cu- or Fe-ZSM-5 catalysts. NOx conversion of the SCR/DPF catalyst with a wall-flow (plugged) was considerably lower under 450 8C than that of the SCR/DPF catalyst with a channel-flow (unplugged). The de-NOx performance of the SCR/DPF catalyst coated with CuNb-ZSM-5was highest among the catalysts examined. SCR/DPF catalyst coated with CuNb-ZSM-5 had superior PM oxidation performance compared to the other SCR/DPF catalysts.
강우석,정유삼,장용주,이봉재 대한이비인후과학회 2005 대한이비인후과학회지 두경부외과학 Vol.48 No.7
Background and Objectives:The decision whether or not to preserve orbital contents during surgical resection of malignant tumors involving the sinonasal tract and the orbit has been an issue of controversy. The purpose of this study is to review our outcomes of the orbital exenteration and rehabilitations, and to present the usefulness of orbital rehabilitations. Subjects and Method:A retrospective analysis was done for 10 patients who underwent orbital exenteration between Feb 1995 and Apr 2003. Results:The age of patients ranged from 23 to 71 years (mean 49.7 years), and the male:female ratio was 1:1. The follow-up period after orbital exenteration ranged from 3 to 108 months (mean 33.2 months). Rhabdomyosarcoma and squamous cell carcinoma represented the largest group (three patients respectively). Maxillary sinus was the most common primary site (five patients). Local sinonasal recurrence was noted in two patients, and distant metastasis was observed in one patient. Six patients have survived for more than 20 months. No orbital rehabilitation and reconstruction was done in six patients, silicone orbital prosthesis in two patients, artificial eye in one patient, and free flap in two patients. All patients who had orbital rehabilitation showed great satisfaction. Conclusion:Rhabdomyosarcoma and squamous cell carcinoma were the two most common malignancy requiring orbital exenteration. More than half of the patients have survived for 20 months or longer. Rehabilitation such as ocular prosthesis can be considered for better cosmetic appearances.