한강 하류의 남조류 및 환경요인의 연간 (2000 ${\sim}$ 2003) 변화에 대하여

서미연,김백호,배경석,한명수,Suh, Mi-Yeon,Kim, Baik-Ho,Bae, Kyung-Seok,Han, Myung-Soo 한국하천호수학회 2005 생태와 환경 Vol.38 No.2

한강 중하류의 남조류 및 환경요인의 연간변화 (2000 ${\sim}$ 2003)를 파악하기 위하여, 2000년 4월부터 2003년 10월까지 4년간 성수대교에서 성산대교까지 총 5개 지점을 선정하여, 수계의 기초환경요인 및 식물플랑크톤 현존량 변화를 조사하였다. 조사기간 동안, 남조류의 현존량은 점차적으로 감소하여 장기간 강우가 가장 많았던 2003년에는 거의 관찰되지 않았으며, 총 식물플랑크톤 현존량에 대한 남조류의 기여도는 약 10%범위내였다. 이러한 현상은 매년 강우집중기 동안 팔당댐으로부터 많은 방류수가 유입됨으로서 수온감소는 물론 광량감소, 영양염류 희석 등에 의한 남조류의 성장이 제한된 것으로판단되며, 동일시기에 다른 조류 (녹조, 규조 등)의 높은 성장으로 엽록소 a와 식물플랑크톤 현존량이 뚜렷하게 증가하였다. 따라서 한강 하류의 고온기 동안 남조류 성장은 잦은 강우와 방류에 의해 제한을 받지만 규조나 녹조와 같은 다른 조류들의 높은 성장으로 대치되는 천이현상을 보였으며, 기후영향을 크게 받는 전형적인 하천생태계의 특성을 나타냈다. For 4 years (2000 ${\sim}$ 2003), annual fluctuations of standing crops of cyanobacteria and physicochemical factors were examined at five sites from Bridge of Seungsoo to Bridge of Seungsan in the lower part of Han River. The cyanobacterial abundance (ND to 4,167 cells $mL^{-1}$) was strongly decreased during the heavy rains in every year. During the similar periods in 2003, cyanobacteria hardly observed, and comprised below of 10 percentage of total phytoplankton. In the period of little cyanobacteria, some green algae and diatom dominated the phytoplankton community, while the concentration of chlorophyll a has not largely change. These results indicate that heavy frequent precipitation strongly limited the growth of cyanobacteria, and lead an algal succession by the appearance of new algal groups.

태권도 옆차기 동작의 우수자와 비우수자간의 운동학적 비교 분석

이호진,한재희,김륜건,홍예은,우상연 순천향대학교 기초과학연구소 2022 순천향자연과학연구 논문집 Vol.28 No.1,2

The purposes of this study were to analyze the kinematic variations between skilled and unskilled individuals and obtain the data needed to improve effective side kick skill in Teakwondo. We used a video analysis program to collect performance time, changes in movement of the center of the body, angle, and angular velocity. The results were as follows : 1) in unskilled cases, side kick motion occurred for more time than in unskilled cases, 2) to make a stronger kick, the skilled group increased the joint speed of the legs and unskilled athletes have smaller angles than experienced athletes. As a result, the total performance time of side kicks was shorter for skilled people and was consistent with other previous studies. The angle of the knee joint and hip joint had a great influence on the side kick.The range of motion of the hip and knee joints should be increased so that the desired hitting point can be quickly reached.

대구지역 고등학생, 대학생의 칼슘 섭취 실태 및 기호도 조사 연구

한재숙,이연정,최영희,송주은,권상호 동아시아식생활학회 1997 동아시아식생활학회지 Vol.7 No.3

This study was performed by questionnaire to investigate the recognition, preference and intake of calcium and related food behaviors of high school and college students (males 200, females 200) in the Daegu area. The daily intake was determined by a 24-hr dietary recall method. The results were summarized as follows: The recognition score of calcium of the subjects was male 10.46, female 11.54, respectively. Also the preference score of calcium source foods of the subjects was male 3.40, female 3.51. The students preferred yoghurt, ice cream, sweet potatoes and milk, in the order, but they disliked beans boiled in soysauce, sesame seeds and cheese. The frequency of calcium source foods were remarkably low. Milk products were the most preferred and eated calcium source food. A day's calcium intake was 54.1~61.1% of RDA for Koreans. The meal skipping, diet and nutrition consideration ratio of the subjects were 66.5, 13.3, 20.0% respectively. There was a significant positive correlation between the recognition and preference scores of calcium.

회전 역진자의 위치제어를 위한 적응 퍼지-신경망 제어기의 설계

탁한호,추연규 진주산업대학교 농업기술연구소 2000 農業技術硏究所報 Vol.13 No.-

In this paper, an position control method using adaptive fuzzy-neural controller(AFNC) is proposed for modeling of nonlinear complex systems. The proposed adaptive fuzzy-neural controller implements system structure and parameter identification using the intelligent schemes together with optimization theory, linguistic fuzzy implication rules, and neural networks from input and output data of processes. Inference type for this adaptive fuzzy-neural controller is presented as simplified inference. To obtain optimal model, the learning rates and momentum coefficients of adaptive fuzzy-neural controller are tuned automatically using improved modified complex method and modified leaning algorithm. For the purpose of its application to nonlinear processes, data for rotating inverted pendulum system ar used for the purpose of evaluating the performance of the proposed adaptive fuzzy-neural controller. The results show that the proposed method can produce the intelligence model with higher accuracy than other works achieved previously.

조직학적 진단된 chronic necrotizing pulmonary aspergillosis 2예

김연숙,정숙인,기현균,김춘관,김신우,한정호,김성민,백경란,송재훈 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.1

CNPA는 기존의 폐질환 및 폐절제술로 인해 국소방어기전에 저하가 있거나 비특이적 전신면역상태저하를 갖고 있는 환자들에게서 주로 발생하는 만성적인 공동성 폐질환이다. 현재까지 우리나라에서는 CNPA의 보고가 없는 상태이고, 저자들은 최근 조직학적으로 진단된 CNPA 2예를 경험하였기에 보고하는 바이다. 저자들이 경험한 CNPA 환자들은 만성알코올 중독 및 기관지확장증과 같은 기저질환과 폐절제술을 받은 병력이 있었다. Aspergillus가 폐실질을 침윤하고 있는 조직소견과 조직배양에서 Aspergillus가 검출되어 조직학적 진단이 가능하였고, amphotericin B의 정주요법 및 경구 itraconazole 투여와 폐절제술 등으로 성공적으로 치료되었다. 아직 많은 임상의들에게는 낯선 질환인 CNPA의 치료성적은 환자의 동반질환 및 CNPA 자체의 중증도, 진단과 치료 시작의 지연 등에 의해 크게 좌우되므로 만성적으로 진행하는 공동성 폐병변을 갖고 있는 환자에게서 CNPA를 감별하는 것이 중요하다. Chronic necrotizing pulmonary aspergillosis (CNPA) is a chronic cavitary form of pulmonary aspergillosis. Dozens of CNPA cases have been reported in patients with systemic immunologic dysfunction or altered local defense mechanism from preexisting pulmonary disease. Review of literatures revealed that no CNPA cases have been reported in Korea yet. We experienced two cases of CNPA proven by lung biopsy. A 53-year-old alcoholic male in poor nutritional state was admitted with generalized weakness and weight loss. Chest CT revealed a cavitary nodule surrounded with ground-glass attenuation. CT-guided fine needle aspiration and biopsy was done. The biopsy specimen demonstrated dichotomously branching septated hyphae consistent with those of Aspergillus sp. Another case was a 39-year-old man with bronchiectasis who was admitted with persistent hemoptysis. He had a past history of pulmonary tuberculosis. A parahilar lesion with intracavitary soft tissue mass was incidentally detected in high-resolution GT. Left lingular segmentectomy was done due to uncontrolled hemoptysis and CNPA was histologically diagnosed. Both patients were successfully treated with intravenous amphotericin B followed by oral itraconazole. Even though CNPA is unfamiliar to most clinicians, it should be included in differential diagnoses of chronic progressive cavitary pulmonary lesion, especially in patients with immunologic dysfunction.

관상동맥내 스텐트 시술시 Aspirin과 Cilostazol 2개월 병합요법

윤명호,탁승제,염철훈,장혁재,최소연,유상용,안성균,고종훈,신준한,김한수,최병일 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

챠량의 엔진모델 설계 및 정속주행 시뮬레이션

추연규,탁한호,이천효 진주산업대학교 1999 論文集 Vol.38 No.-

This paper proposes a design of engine model to be mounted on a power train of vehicle and a simulation is carried out in a straight road for the engine's Intelligent Cruise Control. The designed engine model of vehicle uses Matlab simulink. The simulation results of the Fuzzy Controller compared with those of the PID Controller.

족관절에 대한 임상적 고찰

김연일,한성우,정호원,서유성 순천향의학연구소 2002 Journal of Soonchunhyang Medical Science Vol.8 No.1

The ankle joint is a modified complex hinge joint which plats an important vital role in normal gait, walking and weight bearing. The goal in the treatment of ankle fracture is the restoration of full function to the injured extremity such restoration can be accomplished only with full appreciation of the fracture, the concomitant soft tissue injuries and mechanical demands of the joint involved. The authors have reviewed a series of 131 cases of ankle fractures which were admitted and treated in orthopaedic department of Sunchunghyang university from Feb. 1994 to Oct. 2000. Among the 131 cases ,69 patients (52.7%) were male, and 62 patients (47.4%) were female. Peak incidence of age was 20-30 years old (55 cases, 42.5%). The main causes of injuries were slip down (84 cases, 64.1%) and the other causes were traffic accident (24 cases, 18.3%), rolling down (7 cases, 6.3), fall down (6 cases, 4.6%), direct blow (5 cases, 3.8%), sports injury (4 cases, 3.1%), human trouble (1 cases, 0.7%) in order. Accompanying injuries were noted on 32 case (23.4%) and fractures in lower extremities were most common (15 cases, 46.9%). Supination-external rotation injuries were most common by the Lauge-Hansen classification (53 cases, 40.5%) and type B ankle injuries were most common by the Danis-Weber classification (67 cases, 51.2%) type B2 ankle injuries were most common by the AO classification (44 cases, 33.6%). Open reduction was performed in 95 cases (72.5%) and closed reduction was performed in 36 cases (27.5%). The result was better in those cases which were treated by open reduction and internal fixation than those by closed reduction. SO anatomical reduction and firm internal fixation of the fibula and repair of the distal tibiofibular ligament or transfixation of the distal tibiofibular joint with screw were thought to be very important in the management of the ankle injuries.

위선암에서 p53, MMP-2 및 TIMP-2의 표출

황호현,김의한,오미혜,조현득,양승하 순천향대학교 교수학습개발센터 2004 Journal of Soonchunhyang Medical Science Vol.10 No.3

Gastric adenocarcinoma is the most common malignant tumor in Korea. Many oncogens have been found in malignant tumor cells. Among these oncogene, MMP-2 and TIMP-2 show important role in invasivness and metastasis of malignant tumor cells. P53 is regulator of cellular proliferation, and the over expression of p53 relate to malignant transformation and prognosis. To evaluate the expression of MMP-2, TIMP-2, and p53 according to histopathologic features and the relation between these antigens and prognosis in gastric adenocarcinoma, we have performed immune staining, using mouse anti-MMP-2, mouse anti-p53, and mouse anti-TIMP-2 for 91 cases. The results were as follows; 1) The expression rates of MMP-2, TIMP-2, and p53 in gastric adenocacinoma were 58.2%, 57.1%, and 49.5%, respectively. 2) MMP-2 and TIMP-2 in gastric adenocarcinoma showed reverse correlation.(p<0.001) 3) MMP-2 showed more higher expression rates in intesinal type and sell differentiated form of gastric adenocarcinoma, and in cases showing more deeper invasion and metastasis to lymph nodes in advanced carcinoma. 4) TIMP-2 in advanced carcinoma showed more lower expression rates in cases showing more deeper invasion and metastasis to lymph nodes. 5) MMP-2 expression and TIMP-2 non-expression showed more higher frequency in intestinal type of gastric adenocarcinoma and in cases showing more deeper invasion depth in advanced carcinoma. 6) p53 in advanced carcinoma showed more higher expression rates in cases more deeper invasion and metastasis to lymph nodes. Above results indicated that MMP-2 and TIMP-2 in gastric adenocarcinoma shows reverse correlation, and may be show reverse relation according to progression, type, invasion depth, and metastasis to lymph node. The expression of p53 may be related to metastasis to lymph nodes and degree of depth in advanced carcinoma.

국내 설사환자로부터 분리된 Escherichia coli 균의 혈청군 및 Verocytotoxin 생성능

김호훈,강연호,김성한,박미선,유재연,이복권 대한감염학회 1998 감염 Vol.30 No.5

목적: 국내 설사 환자에게서 분리 동정된 인체 감염 유래 E. coli 균의 혈청군, verocytotoxin 생성능을 구명하여 EHEC 균의 인체 감염 실태를 구명하고, 동물 및 식품 유래 분리균주의 성상과 비교 검토하여 인체 감염 위험성에 대한 기초적 자료를 의학계에 제공하고자 하였다. 방법: EHEC 감염의심 설사 환자 분변 검체로부터 분리된 균주 중 생화확적 성상에 따라 대장균을 분리하였고 이들 균주 중 E. coli O157:H7를 분리하기 위해서는 Dsorbitol 음성균을 선별하였으며, 분리균에 대하여 항혈청으로 응집 시험을 실시하여 혈청군을 구명하였다. 혈청군이 확인된 균주에 대하여 중합효소 연쇄반응 (PCR) 및 역수동라텍스 응집시험 (Reversed Passive Latex Agglutination:RPLA) 으로 verocytotoxin 생성능을 구명하였다. 결과: 장출혈성 대장균 감염 의심설사 환자의 분변검체로부터 25주의 E. coli 균을 분리 동정하였으나 이들 균주는 모두 verocytotoxin을 생성하지 않았다. 분리 동정된 대장균으로부터 확인된 혈청군은 16종으로서 E. coli O1, O6, O8, O15, O20, O25 O26, O28, O29, O44, O86a, O119, O126, O128, O152, 및 O157:H-였으며 E. coli O157:H-혈청형 균주와 E.coli O25 혈청군 균주가 각각 3주씩 분리되어 비교적 높은 분리율을 보였다. 결론: 장출혈성 대장균 감염 의심설사 환자 분변 가검물로부터 총 25주의 E. coli균을 분리 동정하였으나 verocytotoxin을 모두 생산하지 않았다. Background: Since 1982, many countries has reported outbreaks or sporadic cases caused by enterohaemorrhagic Escherichia coli (EHEC) serogroup strains, mainly E. coli O157:H7 type strain. However, systemic investigation about EHEC agents, including E. coli O157:H7, have not been done in Korea. Therefore, we investigated serogroup and verotoxin productivity of E. coli strains isolated from diarrheal patients and estimated risk of human infection in comparison with EHEC strains isolated from cow, pig, and food material in Korea. Methods: Diarrheal patient stool samples were collected and E. coli strains were isolated, according to biochemical characteristics. In order to isolate E. coli O157:H7, D-Sorbitol negative strains were selected. Serogrouping of the E. coli isolates was done by agglutination test. Verocytotoxin productivity was investigated by polymerase chain reaction (PCR) and reversed passive latex agglutination (RPLA). Human infection risk was estimated in comparison with EHEC strains isolated from cow, pig and food materials in Korea. Results: Twenty-five E. coli strains were isolated from the diarrheal patients who were suspected to be infected with EHEC. However, none of these E. coli strains produced verocytotoxin. Out of 25 E. coli isolates, 16 serogroups of E. coli O1, O6, O8, O15, O20, O25, O26, O28, O29, O44, O86a, O119, O126, O128, O152 and 157:H-were found. In each of the E. coli O157:H-and O25 serogroups 3 strains were found. Conclusion: None of 25 E. coli isolated from diarrheal patients who were suspected of EHEC infection produced verocytotoxin producing E. coli have been reported recently in Korea.