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구조용 데크플레이트를 사용한 합성슬래브의 처짐제어를 위한 유효단면 2차모멘트 및 경간깊이 비 평가
양근혁(Yang Keun-Hyeok),김대중(Kim Dea-Jung),이은택(Lee Eun-Taik),정헌수(Chung Heon-Soo) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.5
A proper evaluation of effective moment of inertia involved tensile cracking effect and tension stiffening effect is an<br/> important consideration in the design of one-way composite slabs reinforced with structural steel decking. Especially common<br/> uses of high-strength reinforcing structural steel decking and shallow sections caused serviceability problem of one-way<br/> composite slabs to be of more importance. Methods to evaluate effective moment of inertia and allowable span-depth ratio for<br/> controlling deflection in one-way composite slabs were developed. A new presented formula for effective moment of inertia can<br/> apply to simple as eliminating the necessity of computing moment of inertia of cracked section. Allowable span-depth ratio that<br/> limitation of long-term deflections will be satisfactory considered loading conditions, support conditions, deck plate ratio, span<br/> length, and allowable deflections in ACI 318-02. The proposed methods in this study show a more justifiable than other<br/> procedures such as ACI 318-02 and ANSI/ASCE.
증례보고 : Sevoflurane 마취 후 발생한 급성 간기능 부전
손용 ( Yong Son ),정용관 ( Yong Kwan Cheong ),김대중 ( Dea Jung Kim ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.3
We report a case of a suspected acute hepatic dysfunction after general anesthesia with sevoflurane. A 71 year old female underwent a laparoscopic appendectomy under O2-N2O-sevoflurane anesthesia. She had no history of anesthesia, allergy, hypertension, diabetes or hepatitis. Four hours after surgery, she developed a conscious disturbance and became comatose. There was a marked increase in the serum aspartate aminotransferase, alanine aminotransferase, activated partial thromboplastin time and prothrombin time level, but the platelet and eosinophil counts were within the normal range. Her hepatic dysfunction improved after conservative therapy. She recovered gradually and was discharged after 24 days of hospitalization. Sevoflurane is believed to be the possible cause of the acute hepatic dysfunction in this case. (Korean J Anesthesiol 2006; 51: 359~62)
증례보고 : Charcot-Marie-Tooth병 환자에서 발생한 Rocuronium에 의한 근이완에서의 회복 지연
정용관 ( Yong Kwan Cheong ),이철 ( Cheol Lee ),손용 ( Yong Son ),송윤강 ( Yoon Kang Song ),김태요 ( Tai Yo Kim ),김대중 ( Dea Jung Kim ),오세리 ( Se Ri O ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.53 No.1
Charcot-Marie-Tooth disease, which is also known as hereditary motor and sensory neuropathy, is a heterogenous group of inherited diseases of the peripheral nerve. The spectrum of severity varies from asymptomatic individuals to those with severe limb abnormalities requiring corrective surgery. We report two brothers who had previously been diagnosed with Charcot-Marie-Tooth disease 3 years earlier and were scheduled to undergo a correction osteotomy of both feet under general anesthesia. General anesthesia was induced with propofol 2 mg/kg, rocuronium 0.8 mg/kg and was maintained with O2-N2O-Sevoflurane. The younger brother showed no delay in recovery of the neuromuscular blockade but the elder brother showed a delay. (Korean J Anesthesiol 2007; 53: 145~9)