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Control of laser-induced mechanical effects by using a dual-wavelength irradiation method
Baek, Jun-Hyeok,Yang, Seung-Jin,Kim, Jae-Young,Jang, Kyungmin,Park, Jong-Rak,Yeom, Dong-Il,Kim, Ji-Sun,Kim, Hyung-Sik,Jun, Jae-Hoon,Chung, Soon-Cheol 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol. No.
( Dong Hyeok Yang ),( Seong Ill Woo ),( Dae Hyeok Kim ),( Sang Don Park ),( Ji Hun Jang ),( Jun Kwan ),( Sung Hee Shin ) 대한내과학회 2013 The Korean Journal of Internal Medicine Vol.28 No.6
Coronary stent dislodgement is a rare complication of percutaneous coronary intervention. We report a rare case of dislodgement of two intracoronary stents. On withdrawal of two balloon catheters, one with a guide wire was mechanically distorted from the left main (LM) to the proximal left anterior descending artery (LAD) while the other was dislodged from the LM to the ostial left circumflex ar-tery. The stent in the LAD could not be retrieved into the guide catheter using a Goose neck snare, because it was caught on a previously deployed stent at the mid LAD. A new stent was quickly deployed from the LM to the proximal LAD, be-cause the patient developed cardiogenic shock. Both stents, including a distorted and elongated stent, were crushed to the LM wall. Stent deployment and crushing may be a good alternative technique to retrieving a dislodged stent.
하중조건 및 콜드조인트를 고려한 RC보의 내구수명 평가
양근혁 ( Yang Keun Hyeok ),권성준 ( Kwon Seung Jun ),조성준 ( Cho Sung Jun ),장승엽 ( Jang Seung Yup ),윤용식 ( Yoon Yong Sik ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
This paper evaluated service life in a RC continuos beam with 2 spans considering loading condition, cold joint, and substitution ratio of GGBFS. Based on the previous test results for 91 and 365 days, changing ratio of diffusion coefficients with applied stress are normalized considering substitution of GGBFS and cold joint. For evaluation of service life in RC continuous beam with 2 spans, non-linear analytical model is adopted. The reduction of service life with cold joint and loading condition should be considered in maintenance even if GGBFS which shows excellent resistance to chloride ingress is used for the RC structures.