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1 방 밴드와 어댑터를 사용하여 구성한 겹완철 장주의 응력 및 피로해석
김완재(Wanjae Kim),이기철(Lee Kichul),황수천(Hwang Soo-chun),이건욱(Lee Gun-uk) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
Power pole and its components mainly support and shift power cable and its direction to properly distribute electric power to the need. Power pole assembly includes such components as supporting pole, crossarms, bands for crossarms and insulators. Considerable portion of external force are to be applied to crossarms and bands which connect crossarms to the poles. One-directional bands, 1D bands, are used for single crossarms and two-directional bands, 2D bands, for double cross arms. In the case of replacing a single crossarm by double crossarms, a band also has to be changed to a 2D band. Since replacing bands require a lot of work, a suggestion which utilize adapters to install double bands without the replacement of bands is made. This paper compares the results of stress and fatigue analysis of double crossarms with 1D band and adapter and double crossarms with 2D bands by finite element analysis. Finally structural integrity of the two structures are evaluated and then compared.
황영원,심홍보,정영균,이선일,정용태,김수천,심재홍 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.1
■ Objectives Progressive brain infarction may be accompanied in its acute stage by brain swelling although aggressive medical management is performed. Progressive mass effect may prove life-threatening owing to increased intracranial pressure and herniation. The objective of this paper is to evaluate how surgical decompression is effective to prevent more aggravation of clinical state to death. ■ Methods and Materials Author reviewed total 887 patients of cerebral stroke who were treated in the departments of neurosurgery and neurology at Busan Paik Hospital. Inje University from January 1998 to December 2000. Of these, 40 patients of progressive brain infarction were analysed. ■ Results Male to female ratio was 1.86:1. Most of them(77.5%) occured in the fifties and sixties. The most common mentality change was from drowse to stupor in 26 cases. Mean time from attack to worsening was 60.8 hours. Infarcted right to left brain side ratio was 23:17. Medical disorders were associated in 24 patients. Operation methods are as follows; 35 craniectomies, 4 craniectomies with lobectomy. 1 craniectomy with extraventricular drainage. Surgical results according to Barthel Index was as follows: 2 independent. 7 slightly dependent, 8 moderate dependent, and 5 totally dependent. ■ Conclusions Surgical decompression to control increasing intracranial pressure and optimize cerebral perfusion can provide protection of uninvolved brain, patient salvage, and possibly functional recovery.