광조건(光條件)이 질경이 (Plantago asiatica L.)의 성장(成長)에 미치는 영향(影響)

이호준 ( Ho Joon Lee ),김인택 ( In Taek Kim ),김창호 ( Chang Ho Kim ),김세영 ( Se Young Kim ) 건국대학교 기초과학연구소 1987 理學論集 Vol.12 No.-

The light gradient of 100%, 75%, 50% and 25% in light intensity were established in order to investigate the difference of the growth of Plantago asiatica L. The amounts of matter production, water content, C/F ratio and numbers of leaf and scape tend to increase gradually with the increase of the relative light intensity. On the other hand, the elongations of all organs except root and spike and T/R ratio increase with the decrease of the relative light intensity. In the relative value of dry weight, the 75%, 50% and 25% plots show the 90, 70 and 40% growth compared with the control group, respectively. Particulary, the emergence of spike and scape at 25% plot was delayed for 10 days compared with other plots. Judging from these results, shading is considered as a limiting factor in the growth and distribution of Plantago asiatica L.

적층된 구리 박판의 코너 큐브 패턴의 가공

이준용(Joon-Yong Lee),배찬열(Chan-Yeol Bae),김창호(Chang-Ho Kim) 한국기계가공학회 2016 한국기계가공학회지 Vol.15 No.3

This study presents the optimal hardness range for a coated layer of a workpiece when the diamond tool cuts the corner-cube pattern on the coated plates using an ultra-precision diamond-turning machine. Two kinds of coated plates, which have the hardness range of 211~328 Vickers hardness, are used on the first experiments. The form accuracy for the corner-cube pattern could be achieved through the following experiments using the accumulated thin copper plates in second experiments, having optimal 265~275 Vickers hardness based on the basic first experiments without tool wear. When the number of machining adjustments was increased to seven times, having machining depth was reduced successively in second experiment, a fine surface could be achieved without tool wear.

월악산 신갈나무 ( Quercus mongolica ) 림의 종조성과 토양환경

이호준,전영문,김창호 ( Ho Joon Lee,Young Moon Chun,Chang Ho Kim ) 한국환경생물학회 1998 환경생물 : 환경생물학회지 Vol.16 No.2

The relationship between the floristic composition and soil environmental factors of the Quercus mongolica forest on Mt. Worak was investigated from May 1993 to February 1997. The Quercus mongolica -Lespedeza maximoiwiczii community was classified into two subcommunity of Quercus variabilis and Artemisia stolonifera. The dominance sequences on each stratum determined by the coverage index showed that Quercus mongolica was most dominant in tree-1 layer with 7569.6, and in tree-2 layer with 1211.4, Lespedeza maximoiwiczii in shrub layer with 896.9, and Ainsliaea acerifolia in Herb layer with 1480.8 value. The highest value of diameter breast height (DBH) was distributed in the range of 11 ∼ 20 ㎝ (41.1%) in Quercus mongolica forest and it showed a bell-shape distribution. Except soil water content, almost every data showed the lower value at 600∼850m than any other altitude. Species dominance was eminently Sasu borealis. Carex lanceolata at 400∼600m, Carex humilis at 600∼850 m and Fraxinus rhynchophylla, Acer pseitdo-sieboldianum, Ainsliaea acerifolia, Carex siderosticta at 860∼1060m, respectively. Soil conditions in NE-NW slope was more favorable than in SE-SW slope. In summary, Quercus mongolica, Acer pseudo-sieboldianum. Carex siderosticta, and Ainsliaea acerifolia were dominant in NE-NW slope, while Quercus mongolica, Fraxinus rhynchophylla, Spodiopogon sibiricus, and Carex humilis dominant in SE-SW slope.

담즙 누출 환자에 삽입된 담도 스텐트 제거 후 발생한 대량의 혈액담즙증 1예

박병준 ( Byung Joon Park ),이태훈 ( Tae Hoon Lee ),박상흠 ( Sang Heum Park ),장영환 ( Young Whan Jang ),곽윤미 ( Yun Mi Kwak ),이웅희 ( Woong Hee Lee ),배상호 ( Sang Ho Bae ),김창호 ( Chang Ho Kim ) 대한췌담도학회 2015 대한췌담도학회지 Vol.20 No.2

외상으로 인한 혈액담즙증은 드물지 않게 보고되고 있고 경피경간 경로를 이용한 담도내시경이나 배액술 등에 의한 의인성 손상이 증가하고 있다. 그러나 담도스텐트 제거에 따른 대량의 혈액담즙증의 보고는 매우 드물다. 본 증례는 복부 외상으로 간엽절제술을 받은 환자에서 발생한 담즙 누출을 치료하기 위해 삽입한 담도 스텐트를 제거하면서 혈액담즙증이 대량 출혈로 악화된 사례이다. 간외상 수술 후 담즙누출로 플라스틱 담도 스텐트 삽입 후 호전 중에 혈액담즙증 및 담도염 발생으로 스텐트 교체 목적으로 제거하였으나 제거하자마자 대량의 활동성 혈액담즙증으로 악화되었다. 수술 후의 담즙 누출로 인한 주변조직 손상 및 삽입된 담도 스텐트로 인한 자극과 제거시의 손상이 원인이 될 수 있을 것으로 생각된다. 치료는 대량 출혈로 내시경 시야가 확보되지 않아 응급 혈관조영술로 지혈술을 시행하였다. 따라서 복부외상 환자나 수술 환자에서 담즙 누출 후 담도 배액 스텐트는 일반적으로 시행되는 효과적인 치료 방법이나 혈액담즙증 및 합병증으로 담도 스텐트를 교체할 때 주변 담도나 혈관계의 합병증 유무에 대한 사전 검사를 시행하고 스텐트 제거시에도 주의를 요한다. Biliary plastic stent induced life-threatening hemobilia is very rare. In this case, hemobilia seriously worsened following removal of a biliary stent, which had been placed for treatment of a postoperative bile leak in a patient who had undergone lateral liver segmentectomy for abdominal trauma. Following placement of the biliary stent, the bile leak improved, but hemobilia and cholangitis developed five days later. To manage the stent malfunction, we removed the biliary stent. However, lifethreatening hemobilia developed immediately after removal. Endoscopic hemostasis was impossible; therefore, emergency angiographic embolization and stent graft were performed successfully. In such cases, angiographic embolization and stentgraft placement are effective diagnostic and therapeutic alternatives. When a patient develops hemobilia or cholangitis after biliary stent placement, endoscopists should pay special attention to remove the stent, which might exacerbate hemobilia. Korean J Pancreatobiliary 2015;20(2):99-104

폐 국균증의 외과적 치료

박현,구본일,오상준,이홍섭,김창호,Park, Hyun,Ku, Bon-Il,Oh, Sang-Joon,Lee, Hong-Sup,Kim, Chang-Ho 대한흉부심장혈관외과학회 1995 Journal of Chest Surgery (J Chest Surg) Vol.28 No.3

Between September, 1987 and March, 1994, 11 patients were treated for the pulmonary aspergilloma.The mean age was 59.6 years. Hemoptysis was the most common chief compliants[100% .Postoperative pathology showed bronchiectasis and tuberculosis were most common underlying diseases.Operative procedures were wedge resection in one patient, segmentectomy in 2, lobectomy in 7. One patient treated conservative.In 3 patients, the postoperative air leakage persisted longer than after other pulmonary resectional surgery.There was no postoperative death. The surgical resection is strongly recommended when the patient develops hemoptysis.

해리성 대동맥류에 동반된 허혈성 사지변화의 수술치험

박현,구본일,오상준,이홍섭,김창호,Park, Hyun,Ku, Bon-Il,Oh, Sang-Joon,Lee, Hong-Sup,Kim, Chang-Ho 대한흉부심장혈관외과학회 1995 Journal of Chest Surgery (J Chest Surg) Vol.28 No.3

Two hypertensive men with DeBakey type III dissection were admitted due to acute onset of leg ischemia.One patient had ischemia of both legs,The other patient had ischemia of the right leg.Angiograms showed occlusion of aortic bifurcation in one patient and occlusion of right common iliac artery and right renal artery in the other patient.The first patient who had ischemia of both legs was relieved by axillo-bifemoral bypass operation and the second patient with right leg ischemia by femoro-femoral bypass.The dissection of the aorta was successfully managed by conservative measures including hypotensive medication.The bypass grafts was functioning well one year later.The aortic dissection should not be overlooked as an etiology of acute onset of ischemia of the lower extremities.

폐동맥 협착증을 동반한 우측 삼중심방 -1예 치험-

김혁,이준영,이홍섭,전석철,이규환,김창호,Kim, Hyuck,Lee, Joon-Young,Lee, Hong-Sub,Jun, Suk-Chul,Lee, Kyu-Whan,Kim, Chang-Ho 대한흉부심장혈관외과학회 1986 Journal of Chest Surgery (J Chest Surg) Vol.19 No.2

A rare anomaly, Cor triatriatum dexter combined with pulmonary stenosis and patent foramen ovale in a 2-years- old female is presented. Abnormal embryologic development of the right sinus venosus valve caused partial membranous septation of the right atrium. Most cases have been recorded at necropsy either as an incidental finding or in association with severe congenital heart disease. In this case, Cor triatriatum dexter was diagnosed preoperatively by cineangiography and echocardiography.

Lutembacher's Syndrome 증례보고

박현,강종렬,구본일,박용원,오상준,이홍섭,김창호,Park, Hyun,Kang, Jong-Ryul,Ku, Bon-Il,Park, Yong-Won,Oh, Sang-Joon,Lee, Hong-Sup,Kim, Chang-Ho 대한흉부심장혈관외과학회 1995 Journal of Chest Surgery (J Chest Surg) Vol.28 No.3

A 31-year-old man was admitted due to dyspnea on exertion[NYHA III-IV and general weakness.The echocardiographic findings reveal moderate secundum atrial septal defect and mitral stenosis.Mitral valve replaced through atrial septal defect and atrial septal defect closed by direct suture.Postoperative course was uneventful and discharged 2 weeks later.

학가산 삼림식생의 식물사회학적 분류와 입지환경분석

김창호,강혜원,정홍락,이호준 建國大學校基礎科學硏究所 1993 理學論集 Vol.18 No.-

영남 동북부 내륙에 위치한 학가산(870m)의 삼림식생을 식물사회학적으로 조사하고, 입지요인에 따른 식물군락의 분포특성을 고찰하였다. 조사지역의 삼림식생은 신갈나무-맑은대쑥 군집으로 밝혀졌으며, 3아군집, 3변군집으로 분류되었다. 즉, A: 뱀고사리 아군집(A-1. 굴참나무 변군집, A-2. 물푸레나무 변군집, A-3.전형 변군집), B:소나무 아군집, C:전형 아군집이다. 종합상재도표에 의한 70 %이상의 고상재도종은 신갈나무(97.5 %), 생강나무(95.0%), 둥굴레(72.5%), 털진달래(70.0%) 쇠풀푸레(70.0%), 싸리(70.0%)등이다. 식물군락의 분포특성은 입지요인에 따라 계곡 부근 및 적습한 사면의 물푸레나무림, 토양습도 및 유기물 함량이 다소 양호한 호적조건의 참나무-당단풍림, 습도와 고도가 중간적인 북사면의 참나무림, 토양조건이 건조하고 비교적 척박한 남.남서 사면의 소나무. 쇠물푸레림, 저지대의 소나무림 등의 5개 생태군으로 밝혀졌다. 종다양도, 우점도 및 종풍부도는 각각 1.047, 0.146, 10.237로 나타났다. The forest vegetation of Mt. Hakka(870m),situated in the inland part of northeastern Yeongnam district, the Korean Peninsula, was investigated phytosociologically. The ecological relationships of the vegetation units are described and discussed. Forest vegetation of the study area was indentified into Artemisio-Quercetum mongolicae KimJ.-W. 1990. And the lower units were classified by the method of Z-M school, i.e. Athyrium yokoscense subass. nov(Quercus variabilis variant, Fraxinus rhynchophylla variant, Typical variant), Pinus densiflora subass. nov.,and Typicum subass. nov..According to the synthesis table, species of the high constance degree(more than 70%) were Q. mongolica(97.5%), L. obtusiloba(95.0%), C. humilis(82.5%), P. odoratum var. pluriflorum(72.5%), R. mucronulatum var. ciliatum(70.0%), F.sieboldiana(70.0%), L. bicolor(70.0%)etc. By two dimensional analysis of temperature(elevation)and moisture(slope aspect) gradients, the forest vegetation were grouped into five ecological types: Ash forest at mesic parts near cove, oak-maple forest at the fertile sites, oak forest at submesic-middle parts of the north slope aspect, pine-ash forest at xeric-infertile soils of the south slope aspect, and pine forest distributed in lowlands. Diversity index, dominance index and species richness were shown as 1.047, 0.146, 10.239, respectively.

외상성 췌장 손상

김창호,임훈,백무준,이문수,김형철,이민철,송옥평,조무식,박희주 대한외상학회 1998 大韓外傷學會誌 Vol.11 No.2

Background: The pancreas may be injured as a result of either blunt or penetrating trauma. In spite of the advanees in diagnostic tools, operative method and perioperative care, the morbidity and mortality rates of the trau tic pancreatic injuries remain high. Those are due to the retroperitoneal location of the pancreas and the frequent aasociate injuries of adjacent important organs and major vessels. This study aimed to assess a clinical course and the prognostic factor of pancreatic injury. Method: A retrospective analysis of 43 patients who were sustained from traumatic pancreatic injuries was camed out. All the injuries were diagnosed by an operation during the past seven years at the Soon Chun Hyang University Chun An Hospital from January 1991 to December 1997. Results: Ninty-one percent(39) of injuries was a result of blunt trauma. Seventy%(30) had associate injuries; the gastrointestinal traet, spleen, liver, and retroperitoneal hematoma in arder of frequency. The panereatic complications were developed in 41%(16) who survived more than 48 hours or more. The over-all mortality rate was 27%(12). Among those patients survived 48 hours or more, the mortality rate was20.5%(8). Conclusions: Death after pancreatic injury is almost always due ta the degree of associate injuries and preoperative shock state rather than that of the pancreatic injury itself.