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정현용,이재룡,이윤 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.2017 No.0
In the case of marine concrete composite structures, damaged by the various environment effect(sea damage, freeze-thaw, carbonation), and then, there is a possibility of going bad in the safety. The purpose of this study is to perform periodic measurements and tests on the durability test site constructed at sea and to provide basic guidelines for future maintenance based on the analyzed data.
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정현용,이재룡,이윤 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.2017 No.04
In the case of marine concrete composite structures, damaged by the various environment effect(sea damage, freeze-thaw, carbonation), and then, there is a possibility of going bad in the safety. The purpose of this study is to perform periodic measurements and tests on the durability test site constructed at sea and to provide basic guidelines for future maintenance based on the analyzed data.
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위암조직에서 Carcinoembryonic Antigen 측정의 의의
정현용,윤세진,이헌영,김영건 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.2
To estimate tumor CEA expression of stomach cancers in relation to normal mucosa CEA, degree of cellular differentiation, pathologic stage and other clinicopathologic findings, we measured CEA concentrations in tissue extracts by radioimmunoassay for 24 cases of stomach cancer. The results were as follows: 1. Ranges of tissue CEA concentrations in normal stomach mucosa was from 6.Ong/gm to 15.4 ng/gm(mean 10.2ng/gm). 2. Mean conceatrations of cancer tissue CEA was 42.1ng/gm(from 2.9 ng/gm to 414.Ong/gm), 4 times higher than normal mucosa. In 46% of stomach cancers, tissue CEA concentrations was above normal cut off value(18.7ng/gm). 3. Tiuse CEA concentrations of stomach cancer was significantly high as high CEA levels of normal mucosa(r=0.6954), not related to serum CEA concentrations. 4. Tissue CEA concentrations of stomach cancer was high as high TNM stage, but was not related to wall invasion depth, lymph node metastasis, cellular differentiation and other clinicopathologic findings. In conclusion, the production of CEA in stomach cancers was significantly increased in half cases, CEA expression of tumor was related to pathologic stage rather than cellular differentiation. The factors determined CEA production was considered more higher levels such as DNA profile. To estimate prognostic values of tissue CEA concentrations, follow up of included patients and further study should be pursued.
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상부위장관출혈에서 Hypertonic Saline-Epinephrine 용액 국소주사의 지혈효과
정현용,이헌영,김영건 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2
We have assessed the hemostatic efficacy of endoscopic HS-E solution injection sclerosis in the upper gasrointestinal bleeding. A total 27 cases admitted to CNUH internal medicine department from november 1989 to october 1990 were included in this treatment model and the following results were obtained : 1. The causes of bleeding were gastric ulcer(44%), duodenal ulcer(25.9%), Dieulafoy's ulcer (18.5%), advanced gastric cancer(3.7%), Mallory-Weiss syndrome(3.7%) and angiodysplasia(3. 7%). 2. The locations of bleeding were high body(25.9%), angle(18.5%), bulb(18.5%), antrum(14.8%), midbody(3.7%), cardia(3.7%), pyloric canal(3.7%) and stoma(3.7%). 3. Endoscopic findings of UGI bleeding showed active bleeding in 51.9% (14/27 cases) as spurting (11.1%). pulsating(22.2%) and oozing(18.9%). Stigmatas of recent bleeding were 48.1% (13/27cases) as denuded vessels(29.6%) and fresh blood clots(18.9%). 4. The hemostatic effect of HS-E solution injection sclerosis was 92.6%(25/27 cases). The sussess rate of first injection was 70.3%(19/27), second injection 14.8% and third injection 7.4%. Two cases(7.4%) were operated for hemostasis. 5. According to bleeding types viewed endoscopically, hemostatic effects were following sussess rate ; spurting cases 67% (2/3), pulsating cases 83% (5/6), oozing 100% (5/5). Others showed 100% of sussess rates.
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정현용,이헌영,김영건 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2
Gastrointestinal foreign bodies present a significant problem, causing a surprising amount of morbidity and mortality. The clinician is presented with the problem of expectant management, endoscopy, and surgery, to obtain an optimal outcome. We have assessed the efficacy of endoscopic removal in the gastroesophageal foreign body. A total 19 cases admitted at CNUH hospital from january 1991 to december 1993 were included in this treatment model and the following results were obtained : 1) The age distribution varies 10 months to 74 years old, prevalence rate under 5 years of age was 4 cases(21%). 2) Foereign bodies were :lodged in the esophagus 12 cases(normal anatomy 7 cases, benign stricture 5 cases) and in the stomach 7 cases. 3) Nature of foreign bodies was meat ball, marble, check, coin, fish bone, animal bone, video key and bean. 4) Patients with esophageal foreign body were always complained dysphagia or odynopgagia, patients with stomach foreign body were chiefly asymptomatic. 5) Accessory using in endoscopic removal were grasping forceps, alligator forceps, stone extraction baskets, polypectomy snare and laser equipment. 6) All cases were successfully removed by endoscopy, there were no complication during procedure.
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