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정재은,양근혁,고정완,윤인구,Jung, Jae-Eun,Yang, Keun-Hyeok,Go, Jeung-Wan,Yun, In-Gu 한국건설순환자원학회 2014 한국건설순환자원학회 논문집 Vol.2 No.2
이 연구는 플라이애쉬와 고로슬래그를 치환한 방청 폴리머 보수모르타르의 개발을 위한 기초실험이다. 주요변수는 폴리머 수지 치환율, GGBS와 FA 치환율 및 방청제 치환율이다. 주요 측정항목은 초기슬럼프, 재령별 압축강도, 재령 28일 휨 강도, 건조수축 변형률이다. 실험 결과 모르타르의 압축강도 발현을 고려하였을 때 FA와 GGBS의 적정 치환율은 각각 10%와 20%로 추천될 수 있었다. 또한 방청체 치환은 모르타르의 압축강도를 감소시키는데, 적정 방청제 치환율은 1.5% 이하가 고려될 수 있었다. 한편 모르타르의 휨 강도는 ACI 318-11에서 제시하는 값인 $0.63{\sqrt{f_{ck}}}$보다 컸으며, 건조수축 변형률도 재령 10일 이후에는 ACI 209 예측값보다 낮았다. The present study prepared 13 mixes to examine fundamental mixture proportions of corrosion inhibitor repair mortars. The mortar mixes were classified into three groups according to the selected test variables which are the substitution level of polymer for Group 1, ground granulated blast-furnace slag (GGBS) and fly ash (FA) for Group 2, and corrosion inhibitor for Group 3. Based on the test results, the optimum substitution levels of GGBS and FA could be recommended as 10% and 20%, respectively, though 1-day strength of mortar significantly decreased with their substitution. Furthermore, the appropriate substitution level of corrosion inhibitor was considered to be less than 1.5%. The flexural strength of mortar tested was higher than the predictions obtained from ACI 318-11 equation. The shrinkage strain of mortar was also conservative after an age of around 10 days compared with the predictions of ACI 209.
자궁근종용해술 후 만족도에 영향을 주는 요인: 18개월 추적검사 결과
조현희 ( Hyun Hee Cho ),정재은 ( Jae Eun Chung ),황성진 ( Sung Jin Hwang ),정인철 ( In Cheul Jeung ),김수연 ( Sue Yeon Kim ),김미란 ( Mee Ran Kim ),김장흡 ( Jang Hub Kim ),김진홍 ( Jin Hong Kim ) 대한산부인과학회 2007 Obstetrics & Gynecology Science Vol.50 No.11
Objective: To report 18 months follow up results of radiofrequency myolysis and analysis the factors which effect the success rate of myolysis. Methods: 153 patients who took radiofrequency myolysis between October 2004.~June 2006 in this hospital were enrolled this retrospective study. Except 14 patients which had incomplete data, total 139 patient`s charts were reviewed. Sonographic evaluations were checked after a week, 1 month, 3 months, 6 months, 12 months, and 18 months after myolysis. Questions about complications like vaginal bleeding, abdominal pain, feber and vaginal discharge were asked to patients in every visits. Volume of the myoma were checked via 3D ultrasonography. Results: Reduction rate of the volume of myoma after 18 months were 73% and reoperation rate were 4.3%. Improvement rates of patients symptom were 87% (menorrhagea 95%, dysmenorrheal 75%, pelvic pain 60%) The patients who had myomas sized over 100 ml before treatments showed statistically higher rate of reoperation, and decreased rate of satisfaction. Reoperation rate and reduction rate of myoma showed no difference through pathologic diagnosis. The patients who had initial symptoms showed higher rate of satisfaction after myolysis. Total satisfaction rate were 62%, and no serious complications like bowel injury, bladder injury, sepsis and peritonitis were not reported. Conclusion: Satisfaction rate after radiofrequency myolysis was increased in symptomatic leiomyoma especially smaller than 6.5 cm in diameter.