오일의 누출(漏出)이 토양오염(土壤汚染), 식생(植生) 및 지하수(地下水)에 주는 영향(影響)에 관한 연구(硏究)

진성기 ( Jin Sung Ki ),도덕현 ( Doh Duk Hyon ),최규홍 ( Choi Kyu Hong ) 한국농공학회 1994 韓國農工學會誌 : 전원과 자원 Vol.36 No.1

Our experiment investigated the degree of soil contaimination caused by oil leakage. Each soil sample was taken by boring 5, 8m below the test areas, located 5 to 30m from storage tanks at oil stations. According to the results from a series of laboratory tests(both soxhlet extract test and gas chromatograph test), Traces of a light oil were found in all samples except in Dj₈, rocky soil and gasoline and petroleum were not detected. We concluded that soil contamination was caused by the corrosion of storage tanks or alternatively by oil overflow caused during the flooding of underground water seeping into the tank during heavy rain fall or the spillage caused by carelessness during lubrication. Old stations without a concrete box enclosing their metal tanks run a greater risk of oil leakage. To research the effect of oil leakage on plant growth and underground water, We examined the results of research conducted overseas. According to these results, when oil leakage occurs, plant growth is repressed and agricultural crops experience low productivity levels. Also, the contamination of underground water can be serious when oil spreads to the aquifer layer. As a result of these problems, to prevent oil leakage and minimize its contaminating effects at oil stations, it is necessary to improve facilities of storage tanks and have the monitoring system of oil leakage.

방사선측정치(放射線測定値)를 이용(利用)한 아스콘 포장(鋪裝) 및 노상(路床)의 현장밀도(現場密度)와 함수비(含水比) 측정(測定)에 관한 연구(硏究)

진성기 ( Jin Sung Ki ),도덕현 ( Doh Duck Hyun ) 한국농공학회 1994 韓國農工學會誌 : 전원과 자원 Vol.36 No.4

The objective of this study was to determine the criteria for density and moisture content measurements made with a nuclear density meter on common materials in the construction field. The study also sought to test a full-type nuclear density meter in controlling the density of overlay layers(2.5~5.0cm). In order to determine the accuracy and reliablility of nuclear guage measurements made on construction materials, laboratory and field tests were conducted. Wooden blocks(65x45x50cm) and a special steel compactor(4.7kg) were constructed in order to carry out tests which were conducted on three different materials; coarse gramed soil, fine grained soil, and AC material. Throughout all laboratory and field tests, the nuclear density and moisture content were determined using Humboldt 5OOLP nuclear gauge. The tests on subgrade material entailed obtaining density measurements by means of both the sand replacement method and the nuclear density meter. The results of the sand replacement method were then compared to the readings recorded bu the meter. As in the subgrade material tests, density measurements made during AC pavement tests were also determined using the unclear meter in addition to a second means; through the core method. The meter readings and core densties were compared as was done in the tests on subgrade materials. The correlation between the results of the sand replacement test(also, the core method) and meter readings on subgrade material was then determined. Similarly, the observed results were then analyzed through linear regression. The tests to determine thin-lift density by means of a full-type nuclear density meter also conducted on the overlay layers(about 4. 8cm thickness) above AC pavements at road construction sities in Korea

액상 및 분말 고화제를 이용한 친환경적인 고화 흙벽돌 제작

진성기(Sung-Ki Jin),정승용(Seung-Yong Jung) 한국지반환경공학회 2010 한국지반환경공학회 학술발표회논문집 Vol.2010 No.5

슬관절내 유리체에 대한 초음파 검사의 유용성

김정만,남호진,라기항,진성기,최승균,Kim, Jung-Man,Nam, Ho-Jin,Ra, Ki-Hang,Jin, Sung-Ki,Choi, Seung-Kyun 대한정형외과초음파학회 2010 대한정형외과 초음파학회지 Vol.3 No.1

Purpose: We wished to evaluate the clinical usefulness of ultrasound, when loose body is palpated and is shown radiographically in knee. Material and Methods: Twenty-five knees of twenty-two patients with loose body in knee radiographically from March, 2007 to July, 2009 were involved in this study, there were 8 males and 14 females, there were 11 right knees, 8 left knees and 3 both knees, the average age was 56.3 years (range, 32~76 years). The location of loose bodies were 13 cases at suprapatella pouch, 1 case at infrapatella anterior compartment and 11 cases at posterior compartment. In loose bodies of suprapatella pouch, we examined the mobility of loose bodies longitudinally with ultrasound placed at superior patella pole while flexing and extending the knee. In loose bodies of infrapatella anterior and posterior compartment, we examined the mobility of loose bodies longitudinally and transversely with ultrasound while flexing and extending the knee. Results: All cases of suprapatella pouch and infrapatella anterior compartment were diagnosed to movable loose bodies and were removed surgically, all cases of posterior compartment were diagnosed to immovable loose bodies and were not removed. Conclusion: When we determined the surgical removal according to mobility of loose body in knee, ultrasound may be helpful clinically. 목적: 슬관절내에서 유리체가 만져지거나 방사선 소견상 보일 경우, 초음파의 임상적 유용성을 알아보고자 하였다. 대상 및 방법: 2007년 3월부터 2009년 7월까지 방사선 소견상 슬관절내에 유리체가 발견된 22명, 25예를 대상으로 하였으며, 남자가 8명, 여자가 14명, 우측이 11예, 좌측이 8예, 양측이 3예 였으며, 평균 연령은 56.3세(32~76세)였다. 유리체의 위치는 슬개상 주머니에서 13예, 슬개하 전방구획에서 1예, 슬관절 후방 구획에서 11예가 있었다. 슬개상 주머니에 있는 유리체의 경우 초음파를 종으로 슬개골 상부에 놓고 굴곡-신전 하면서 가동성을 관찰하였다. 슬개하 구획과 후방 구획에서는 초음파를 종과 횡으로 놓고 굴곡-신전을 하였을 때 유리체의 가동성을 관찰하였다. 결과: 슬개상 주머니의 유리체와 슬개하 유리체는 전 예에서 초음파 소견상 움직이는 것으로 진단 되어 제거술을 시행하였으며, 후방 구획에 있는 유리체는 전 예에서 움직이지 않는 것으로 진단되어 제거 대상에서 제외하였다. 결론: 슬관절 유리체의 가동성 유무로 수술적 제거의 필요성을 판단하는 데에 초음파는 임상적으로 도움을 줄 수 있었다.

월상 골 제거 및 혈관부착 두상 골 이식으로 치료한 진행된 키엔벡 병

이주엽,김형민,정양국,진성기,박일중,Lee, Joo-Yup,Kim, Hyoung-Min,Chung, Yang-Guk,Jin, Sung-Ki,Park, Il-Jung 대한미세수술학회 2008 Archives of reconstructive microsurgery Vol.17 No.2

Purpose: There are many controversies concerning therapeutic guidelines for the treatment of Kienb$\ddot{o}$ck's disease. The purpose of this study is to evaluate the clinical and radiological result of lunate replacement by vascularized os pisiform transfer in advanced Kienb$\ddot{o}$ck's disease. Materials & Methods: There were two men and three women. The mean age was 55 years, ranging from 41 to 70. According to Lichtman's classification, three cases were stage IIIb and two cases were stage IV. Results: At the period of follow up, pain during motion was markedly diminished in all patients, the arc of motion ranged on average from 49 degrees of flexion to 53 degrees of extension and the grip power of the affected hand reached on average 83% compared with the contralateral side. Clinical results assessed by DASH and modified Mayo score showed 8 and 90. On plain X-rays, carpal height ratio and radioscaphoid angle were not changed postoperatively. Conclusion: Lunate excision and vascularized os pisiform transfer is a reliable alternative method for the treatment of advanced Kienb$\ddot{o}$ck's disease.

자가 반건양건을 이용한 전방 십자 인대 보강술

최남용,한창환,인용,문찬웅,최승욱,진성기,Choi, Nam-Yong,Han, Chang-Hwan,In, Yong,Moon, Chan-Woong,Choi, Seung-Woog,Jin, Sung-Ki 대한관절경학회 2008 대한관절경학회지 Vol.12 No.1

목적: 저자들은 전방 십자 인대 부분 파열 환자에서 남아있는 다발을 보존한 상태로 자가 반건양건(Semitendiosus tendon) 을 이용하여 보강술을 시행한 후 추시 결과를 보고하고자 한다. 대상 및 방법: 2004년 1월부터 2006년 6월까지 자가 반건양건을 이용하여 전방 십자 인대 보강술을 시행한 22예를 대상으로 하였다. 술 후 관절 운동 범위, 전방 전위 정도, pivot shift 검사 및 슬관절의 기능적 평가를 하여 결과를 분석하였다. 전방 전위 정도는 KT 1000 관절계를 이용하여 측정하였으며 슬관절의 기능적 평가는 Modified Feagin Scoring System과 Lysholm score를 측정하였다. 결과: 술 후 최소 1년 이상 추시 결과, 관절 운동 제한 소견을 보인 예는 없었으며, KT-1000 관절계를 이용한 경골 전방 전위에서는 20lb 부하시 정상측과 비교하여 평균 1.7 mm의 차이를 보였다. Modified Feagin knee scoring system에 의한 기능 평가는 91%에서 양호 이상의 결과를 보였으며, Lysholm score는 술전 평균 70점에서 술후 평균 92점으로 향상되었다. 결론: 전방 십자 인대 부분 파열 환자에서 자가 반건양건을 이용한 전방 십자 인대 보강술은 슬관절 안정성의 유지와 더불어 고유 감각 기능을 보존할 수 있는 방법으로 사료된다. Purpose: This study presents clinical results of anterior cruciate ligament(ACL) augmentation using autogenous two-strand semitendinosus tendon in the treatment of partial ACL tears with preservation of residual portion. Materials and Methods: From January 2004 to June 2006, twenty two patients who had an ACL injury underwent ACL augmentation using autogenous two-strand semitendinosus tendon were enrolled in this study. We evaluated the clinical results with regard to clinical findings(range of motion, Lachman test, pivot shift test), standard knee scales(Lysholm, Modified Feagin Scoring System), and KT-1000 arthrometer testing. Results: At minimum one year postoperatively, there was no limitation of range of motion. Lachman and pivot shift tests were negative in all knees. On instrumented anterior laxity test by KT-1000 arthrometer, mean side to side difference was improved from 4.6mm preoperatively to 1.7mm postoperatively. Average Lysholm score was improved from 70 to 92. Ninety one percent of cases were rated as good or excellent in Modified Feagin Scoring System. Conclusion: Augmentation using autogenous two-strand semitendinosus tendon with preservation of residual portion of the ACL seems to be an acceptable method for restoring knee stability and proprioceptive function.