안동호 상류 운곡천의 이화학적 수질특성과 식물플랑크톤 군집 특성

이중복,이희무,이건주,박정원,박재충,김동걸,권기석 7개 국립대학교 환경연구 논문집 공동발행 위원회 2002 환경연구논문집 Vol.2 No.1

This investigation is about the characteristics of phytoplankton community and physciochemical water quality of specific 6-point the Woon-kog stream system in upsteam of the Andong Lake. DO value was showed over 8.1㎎/L at each site and COD_Mn, BOD, T-N, T-P tend to increase as they stream down and that the existence and dominance of phytoplankton was low and it was difficult to conclude the definite correlation of water quality and phytoplankton community. Finally, it seemed to be desirable that alternatives for pollutional reduction should be made and performed on the basis of the continuous monitoring of the inflow to preserve the Andong Lake.

허브공항 경쟁우위 확보를 위한 핵심역량 연구 : 전략적 네트워크를 중심으로

김수곤,허희영,이윤철 한국항공대학교 경영연구소 2000 경영연구 Vol.7 No.2

아시아지역에서 건설되었거나 확장될 대부분의 공항은 허브공항이 되기 위하여 심한 경쟁을 할 것이다. 이 목적을 달성하기 위하여 공항당국은 핵심역량을 파악할 필요가 있다. 유럽의 공항들을 그들의 허브공항으로서의 성과지표인 전체승객수와 환승율에 따라 4개 그룹(순수 허브형, 자체수요 의존형, 연계수요 의존형, 순수 스포크형)으로 구분하였다. 자원기반접근방법(Resource-based Approach)을 이용하여 허브화에 성공한 타입의 전략적 핵심역량을 규명하였다. 특히 공항당국의 협력적 네트워크 구축이 결정적 역량으로 제시되었다. 이 연구에서 파악된 핵심역량(항공사, 컨세션업체 등과의 협력적 네트워크의 구축, 환승시설의 편의성, 쇼핑·여가시설의 다양성 등)은 허브공항화를 추구하는 공항당국에게 많은 도움을 줄 것이다. Most airports having been built or expanded in Asia will face fierce competition to become hub airports. To accomplish this goal, airport authorities will need to identify core capabilities. Some airports in Europe were categorized into 4 different typedpure hub type, self-demand dependent type, transfer-demand dependent type, pure spoke type) depending on their performance variables, the number of total passengers and the transfer passenger to total passenger ratio. Resource-based approach identified core strategic capabilities from successful hub type of airports. Especially, cooperative networks of airport authorities were suggested to be one of critical strategic capabilities. These core capabilities (cooperative networks with airlines, concessionaires, convenience of transfer facilities, and diversity of shopping and leisure facilities, etc) will help airport authorities become hub airports.

Plus(+) Point Probe를 이용한 용접부 와전류검사

윤병식,남민우,김석곤,이희종,김용식 韓國非破壞檢査學會 1999 한국비파괴검사학회지 Vol.19 No.6

발전설비를 구성하는 주요 기기중 펌프, 발브, 배관 등의 용접부에 발생할 수 있는 균열 등의 결함을 검출하기 위한 plus-point 와전류검사탐촉자를 설계하여 결함을 검출하고 그 크기를 측정할 할 수 있는 검사기법을 연구하였다. 차동형 모드로 운전되는 plus-point 와전류탐촉자는 2개의 "I"자형 코일 이 십자형태로 교차되어 있으며, 탐촉자와 시험체 표면사이의 lift-off변화에 의한 영향이 재래식 표면 탐촉자에 비해서 작게 발생하는 특징이 있다. 결함에 대한 탐촉자 반응을 평가하기 위해서 304 스텐 인레스강 용접부에 인공결함인 균열성 노치를 방전가공하여 시험편을 제작하였으며, 이를 활용하여 plus-point 와전류탐촉자의 결함 검출, 종류 판별 및 크기를 측정할 수 있는 기법을 연구하였다. A plus-point eddy current test(ECT) probe was developed to examine the defects on the welds of pumps, valves, and pipings which are the major components of the electric power plants. non-destructive evaluation(NDE) techniques for detecting and sizing the flaws were studied adapting this probe. Differential plus-point ECT probe is consists of two "I"-type coils crossed each other and has an advantage having a small influence on the sensitivity by lift-off variation to the conventional types of probe. The specimens with crack-like electro dischrge machining(EDM) notches on the weld of type 304 stainless-steel were fabricated in order to evaluate the plus-point ECT probe response to the flaws. NDE techniques to detect and size the flaws and estimate the flaw type were established with this specimens.

퉁퉁마디로부터 색소체 외막 단백질 유전자의 분리 및 발현분석

네티 엘마와티,차준영,양영실,정민희,신동진,이병현,이곤호,손대영 Plant molecular biology and biotechnology research 2004 Plant molecular biology and biotechnology research Vol.2004 No.-

Complementary DNA encoding chloroplast outer envelope membrane protein (OEP) from the halophyte Salicornia herbacea has been cloned and sequenced. The full length cDNA is 596 bp and encodes a polypeptide of 91 amino acid residues with a molecular mass of 8.9 kDa. The expression level of ShOEP increased by salt, drought and ABA treatments. ShOEP expression was largely induced in roots and shoots by high salts. The biological function of ShOEP was examined by yeast complementation. ShOEP can suppress Na+ sensitivity of yeast mutant (cnbΔ) in the presence of salt. These results suggest that ShOEP is a salt inducible gene and may have functions in the regulation of plant salt stress.

악교정 수술후 발생한 감염 4증례

진병로,김종섭,박진호,이창곤,박희대,이희경 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.1

Postoperative infection following orthognatic surgery is rare. When postoperative infections occur, the initial treatment consists of incision and drainage of the affected area, culturing to identify bacterial stains and verify antibiotic sensitivity, and the institution of the appropriate antibiotic regimen. Some plates and screws may eventually require removal, the initial therapy should be attempted to retain the plates and screws until adequete healing has taken place. In orthoganthic surgery, intra-operative complications as a lesion of inferior alveolar nerve, fracture of osteomised segments, incomplete sectioning, malposittion of segments, haemirrhage may occur. The surgeon should be familiar with possible complications to be caused and how to manage them. Prevention of postoperative infection following the orthognathic surgery consists of minimal periosteal reflection, aseptic management of operation field, proper surgical technique, rigid fixation, prophylactic antibiotics.

Bacteroides fragilis에 의한 심장막농양 1예

김석연,문수영,김경엽,권성진,김명곤,이미숙,이희주 대한감염학회 2007 감염과 화학요법 Vol.39 No.6

화농성 심장막염은 전 세계적으로 매우 드물고 사망률이 높은 질환이다. 화농성 심장막염은 대부분 심장막을 침범하지만, 국소적으로 농양을 형성하는 경우도 보고 되고 있다. 세균에 의한 화농성 심장막염은 전체 급성 심장막염의 원인 중 6% 정도를 차지하고 있다. 그 중에서 혐기균에 의한 화농성 심장막염은 호기균에 의한 것보다 훨씬 드물다. 저자들은 만성 신질환으로 혈액 투석을 받고 있는 58세 남자에서 발생한 B. fragilis에 의한 화농성 심장막 농양과 심장눌림증을 국내에서 처음으로 경험하였기에 이를 고찰과 함께 보고하는 바이다. Purulent pericarditis is a rare, life-threatening condition and usually ivolves the whole pericardium. However only few cases have been reported in which a loculated pericardial abscess occurred from purulent pericarditis. The prevalence of acute pericarditis due to bacteria was 6%. Purulent pericarditis due to anaerobic bacteria has been reported less frequently than aerobic bacteria. There was no report about purulent pericarditis due to Bacteroides fragilis in Korea until now. So we report the first case of pericardial abscess due to B. fragilis in 59 year old Korean male with history of chronic renal failure and hemodialysis, that was complicated with pericardial tamponade.

미숙아에서의 자궁 내 대퇴골 골절 1례

이철희 ( Chul Hee Lee ),김희문 ( Hee Moon Kim ),신선희 ( Seon Hee Shin ),성태정 ( Tae Jung Sung ),김성구 ( Sung Goo Kim ),이건희 ( Kon Hee Lee ) 대한주산의학회 2007 Perinatology Vol.18 No.3

Intrauterine fracture in a neonate is rare but can occur without trauma to the mother and can be caused by genetic factor or external pressure or skeletal disorder. Authors experienced a case of intrauterine femur fracture in a female premature patient which was discovered at birth. The patient was born at 28+3 weeks by a cesarean section. Her birth weight was 900g. Amniotic fluid was clear and there was no amniotic membrane adhesion. The mother was 31 years old and had preeclampsia but had no other previous medical history. She had no experience of trauma in daily activities and abnormal findings during antenatal care. On x-ray finding taken after birth, there was callus formation at the epiphysis of the right distal femur. We found no shortening of the limbs during physical examination of the neonate but there were edematous change at the distal portion of the right thigh She had no neurologic abnormality. We report a case of intrauterine femur fracture with no special history in the mother.

Aortic Valve Involvement in Behcet`s Disease. A Clinical Study of 9 Patients

(Choong Won Lee),(Ji Soo Lee),(Won Ki Lee),(Chan Hee Lee),(Chang Hee Suh),(Chang Ho Song),(Yong Beom Park),(Soo Kon Lee),(Yong Soon Won) 대한내과학회 2002 The Korean Journal of Internal Medicine Vol.17 No.1

N/A Objectives : To assess the clinical features, pathologic findings, postoperative results and the effects of immunosuppressive therapy in patients with Behget's disease (BD). Methods : We reviewed the postoperative course of the 9 BD patients who underwent a total of 17 aortic valve replacement procedures with prosthetic valves. Results : Histological examination of the aortic valve commonly revealed diffuse myxoid degeneration (75 percent). Of 17 valve replacement surgeries, 13 surgeries resulted in complications, such as detachment of the prosthetic valve with perivalvular leakage and dehiscence of the sternotomy wound, within an average of 5 months (range from 1 month to 14 months). The rate of prosthetic valve detachment was 76 percent (13 of 17 surgeries). Four of the 9 patients (44 percent) who underwent aortic valve replacement procedures died of heart failure or infection associated with the detachment of the prosthetic valve, and perivalvular leakage within an average of 9 months. Aortic insufficiency associated with dehiscence of the prosthetic valve developed in 11 of 12 surgical cases (92 percent) with a mechanical valve and 2 of 5 surgical cases (40 percent) with tissue valves. Thirteen of 15 surgeries (87 percent) which were not given postoperative immunosuppressive therapy developed complications, while none of 2 surgeries that used postoperative immunosuppressive therapy with prednisolone (1 mg/kg/day) and azathioprine (100 mg/day) had these complications. Conclusion : The rates of prosthetic valve detachment in BD involving aortic valve were higher than those of other diseases. Aortic valve involvement was also one of the poor prognostic factors in BD. Intensive postoperative immunosuppressive therapy and surgical methods may be important factors for postoperative results.

Sjogren 증후군의 임상적 고찰

이충원 ( Choong Won Lee ),이원기 ( Won Ki Lee ),이지수 ( Ji Soo Lee ),이찬희 ( Chan Hee Lee ),송창호 ( Chang Ho Song ),서창희 ( Chang Hee Suh ),박용범 ( Yong Beom Park ),이수곤 ( Soo Kon Lee ) 대한류마티스학회 1997 대한류마티스학회지 Vol.4 No.2

Objectives: To investigate the clinical characteristics of Sjogren`s syndrome (SS). Methods: We. retrospectively reviewed 59 patients with SS in the period from January 1986 to January 1997. European Epidemiology Center criteria was used to diagnose SS. Results: Thirty-one primary SS and 28 secondary SS patients were included in this study. There were 57 females and 2 males, the mean age was 45.2±12.3 years(24 to 70 years). Patients with secondary SS were associated with rheumatoid arthritis (n=10), systemic lupus erythematosus (n=7), scleroderma (n=5), mixed connective tissue disease (n=3), and myositis (n=3). The common presenting symptoms were dry mouth in 92% and dry eyes in 90% of patients. Other symptom and signs included fatigue(27%), lymphadenopathy (22%) and parotid gland swelling (10%). The commonly presented autoantibodies were antinuclear antibody (83%) and rheumatoid factor(57%). Anti-Ro was positive in 49% (25/51) and anti-La in 37% (19/51). Anti-La positivity was significantly higher in primary SS(52%) compared to secondary SS(21%) (p<0.05). Schirmer test was positive in 98% (44/45), salivary radioscintigraphy in 74%(25/34), and lower lip biopsy in 47% (16/34). Extraglandular manifestations, such as Raynaud`s phenomenon, vasculitis, glomerulonephritis, vaginal dryness, renal tubular acidosis, and primary biliary cirrhosis, were more frequently presented in primary SS compared to secondary SS (p<0.05). Conclusion: The sex, age, and clinical manifestation of primary SS were similar with secondary SS, but extraglandular manifestations and anti-La antibody positivity were more frequent in primary SS.

전신성 흥반성 루푸스 환자에서 임상적 질병 활성도와 혈청 인터루킨 8 과의 연관성

이원기(Won Ki Lee),송창호(Chang Ho Song),박용범(Yong Beom Park),이충원(Choong Won Lee),서창희(Chang Hee Suh),이찬희(Chan Hee Lee),이지수(Ji Soo Lee),김동수(Dong Soo Kim),이수곤(Soo Kon Lee) 대한내과학회 1998 대한내과학회지 Vol.54 No.6

Objectives To evaluate serum Interleukin 8 (IL-8) as a predictor of disease activity in SLE and to provide insight into the potential role of IL-8 in the pathogenesis of SLE. Methods: Sixty-four paired from the 32 SLE patients and 10 healthy control were obtained. Serum IL-8 levels were determined by EUSA technique. Tests for other laboratory parameters, such as circulating immune complex (CIC), C3, C4 ANA, anti-dsDNA, Hb, Hct, leukocyte, lymphocyte, platelet and KSH, were performed for every sample coincidently with assessment of clinical disease activity by the Lahita scales, Results: We found that serum IL-8 levels in SLE patients were significantly higher than those of healthy controls. Serum IL-8 levels significantly correlated with clinical disease activity. Serum IL-8 levels correlated with CIC, but it had no correlation with other laboratory parameters. Conclusion: These findings suggest that serum IL-8 can be used as a marker of disease activity in patients with SLE. These results may have implication in the pathogenesis of SLE.