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양성 갑상선 종양에서의 액와 접근법을 통한 무기하 내시경 갑상선 절제술
이준상,강상욱,정종주,성태연,이승철,이용상,남기현,장항석,정웅윤,박정수 대한갑상선-내분비외과학회 2008 The Koreran journal of Endocrine Surgery Vol.8 No.3
Purpose: The techniques for minimally invasive surgery in various surgical fields have recently become markedly developed. The endoscopic surgical methods for head and neck surgery have been introduced somewhat later due to some technical limitations. However, various endoscopic techniques have been remarkably developed during the last 10 years. We also introduced a novel method of gasless endoscopic thyroidectomy using the trans-axillary approach. The aim of this study is to evaluate the feasibility and surgical outcome of this method for treating patients with benign thyroid tumor.
Cd^2+ 에 의한 닭의장풀의 생리적 독성에 salicylic acid가 미치는 영향
이준상 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.1
The effect of salicylic acid(SA0 on Cd^2+-induced physiological toxicity in Commelina communis was investigated. 3-weeks old Commelina communis was transferred to and grown in Hoagland solution in the presence or absence of 100μM Cd^2+ and SA for 3 weeks. In the treatment of Cd^2++SA, the length of stem was increased to 0.7㎝ for 3 weeks(Cd^2+, 2.1㎝; control, 7.2㎝). Cd^2++SA reduced total chlorophyll content up to 86%, and changed chlorophyll a/b ratio below 1.6. Cd^2++SA also reduced about 40∼78% of water potential, but Cd^2+ increased 16∼39% from 1 week to 3 weeks. Cd^2++SA also inhibited 27% of Fv/Fm, but in case of Cd^2+, Fv/Fm was not changed. The treatment of Cd^2++SA showed about 37∼58% inhibition of photosynthetic activity when measured at various light intensity(500∼1000μ㏖ m^-2s^-1). In the case of Cd^2+ treatment, photosynthetic activity was inhibited to 12∼15%. Similar effect was found in terms of stomatal conductance. Therefore, it could be concluded that the treatment of Cd^2++SA into plant decrease or block various physiological activities and lead to die by double effects of both chemicals.