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[제1분과/비파괴검사 및 계측기술] 콘크리트의 초기 압축강도 추정에 P형 슈미트햄머의 활용
김종(Kim Jong),이용성(Lee Yong-Sung),정덕우(Jung Duk-Woo),이백수(Li Bai-Shou),윤기원(Yoon Gi-Won),한천구(Han Cheon-Goo) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
This paper investigate the applicability of P type Schmidt hammer for estimating early age compressive strength of concrete using 320data, which are collected varying with mixture proportion and material condition. Based on the Logistic regression analysis, low strength is calculated under low rebound number of P type Schmidt hammer and high strength is estimated under high rebound number of P type Schmidt hammer. The estimation equation between rebound number and compressive strength is obtained as followings; y=55.ll/[1+exp(-6.810g(x)+11)](R²=0.9294) From the statistical consideration, rebound number of P type Schmidt hammer to estimate 5MPa of compressive strength. which is capable of removing the side form is found to 28.6 with significant level of 5%
콘크리트의 초기 압축강도 추정에 P형 슈미트햄머의 활용
김종 ( Kim Jong ),이용성 ( Lee Yong-sung ),정덕우 ( Jung Duk-woo ),( Li Bai-shou ),윤기원 ( Yoon Gi-won ),한천구 ( Han Cheon-goo ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
This paper investigate the applicability of P type Schmidt hammer for estimating early age compressive strength of concrete using 320data, which are collected varying with mixture proportion and material condition. Based on the Logistic regression analysis, low strength is calculated under low rebound number of P type Schmidt hammer and high strength is estimated under high rebound number of P type Schmidt hammer. The estimation equation between rebound number and compressive strength is obtained as followings; y=55.11/[1+exp(-6.81og(x)+11)](R<sup>2</sup>=0.9294). From the statistical consideration, rebound number of P type Schmidt hammer to estimate 5MPa of compressive strength, which is capable of removing the side form is found to 28.6 with significant level of 5%
대장절제술 환자에서 수술 전 경구용 Carbohydrate-Rich 음료 복용과 인슐린 저항성 관계
체리안시오 ( Cherry Ann Sio ),정규환 ( Kyuw Han Jung ),강성범 ( Seong Bum Kang ),김덕우 ( Duk Woo Kim ),오흥권 ( Heung Kwon Oh ),윤미옥 ( Miok Yoon ) 한국정맥경장영양학회 2015 한국정맥경장영양학회지 Vol.7 No.2
Purpose: Reducing preoperative fasting time showed positive effects in several studies, and current guidelines suggest use of a preoperative oral carbohydrate-rich solution before elective surgeries. For elective colectomy procedures, some surgeons favor two-day bowel preparation with diet restriction and administration of laxatives. Aside from patients experiencing the discomfort of nil per os (NPO), there are reported benefits regarding intake of liquids until at least two hours prior to surgery, including decrease in insulin resistance, without additional postoperative surgical complications. The aim of this study is to show the benefits of administration of oral rehydration solution (ORS) two hours prior to surgery for patients undergoing elective colectomy, particularly postoperative insulin resistance. Methods: This is a randomized controlled trial. All patients undergoing elective colectomy were included and randomized to the control arm or treatment arm. The control arm consisted of the standard bowel preparation and one day of NPO, while the treatment arm consisted of the standard bowel preparation and allowing intake of carbohydrate-rich ORS until 2 hours before surgery. The insulin, glucose, cortisol, and triglyceride levels were determined immediately after induction, 6 hours, 24 hours, and 48 hours post-op, and compared. The homeostatic model assessment-insulin resistance, insulin, glucose, cortisol, and triglyceride levels were determined and compared between the two groups. Anxiety and postoperative complications were monitored and assessed as well. Results: There was less insulin resistance in patients who received ORS 2 hours prior to surgery. Insulin, glucose, cortisol, and triglyceride levels were lower in the treatment group compared to the control group. Taking ORS 1 day prior and until 2 hours before surgery decreased anxiety and discomfort, and alleviated hunger. Conclusion: Regarding complications, there was no difference in the incidence of aspiration and postoperative complications. There were fewer wound complications and incidence of paralytic ileus in the treatment group.
성인 남자에서 발생한 Toxoplasmic Lymphadenitis 1예
박덕우,강재명,김인,박상현,김남중,김양수,우준희,류지소,김미나,유은실,남호우 대한화학요법학회 2002 대한화학요법학회지 Vol.20 No.1
성인에서 발생한 TL은 국내에서 매우 드문 질환이다. 저자들은 미국 여행 후 발생한 것으로 추정되고, 경과 관찰 후 임상적 호전을 보였던 TL 1례를 경험하였기에 보고하는 바이다. In Korea, Toxoplasmic lymphadenitis cases were reported infrequently and previous reports were considered to be due to the ingestion of raw pork and needle stick in the laboratory. A 38-year-old male was hospitalized because of cervical lymphadenopathy after traveling in the United States. Anti-Toxoplasma gondii antibodies (lg G/Ig M) were strongly positive by enzyme-linked fluorescence assay(ELFA), and the lymph node biopsy showed diffuse cortical and paracortical follicular hyperplasia and small clusters of epithelioid cells in the germinal centers. The lymphadenopathy subsided 4 Months later without medication of anti-parasitic agents. It is suggested to be a case of acute infection acquired during traveling in the United States.