전혈 , 림프구와 백혈구 연층 각각의 방사성 동위원소 체외 조사후 배양을 이용한 생물학적 선량측정

김종호,이동수,최창운,정준기,이명철,고창순,김종순,김희근,강덕원,송명재 ( Jong Ho Kim,Dong Soo Lee,Chang Woon Choi,June Key Chung,Myung Chul Lee,Chang Soon Koh,Chong Soon Kim,Hee Geun Kim,Duck Won Kang,Myung Jae Song ) 대한핵의학회 1995 핵의학 분자영상 Vol.29 No.1

The purpose of this study was to establish mononuclear cell cultures such as lymphocytes or buffy coat for the biological dosimetry of in vitro irradiation of the radionuclide Tc 99m in order to exclude the effect of residual doses seen in the cultures of whole blood. Biological dosimetry of Tc-99m on cultured mononuclear cells at doses ranging from 0.05 to 6.00 Gy, by scoring unstable chromosomal aberrations(Ydr) observed in cultured lymphocytes, were performed using peripheral venous blood of healthy normal person. The results showed that; (1) Jn vitro irradiation of radioisotope in separated lymphocyte or buffy coat showed trace amount af residual doses of isotope after washing. Residual doses of isotopes are increased in proportion tn exposed time and irradiated dose without difference between I-131 anct Tc 99m. (2) We obtained these linear-quadratic dose response equations in lymphocyte and buffy coat culture after in vitro irradiation of Tc-99m, respectively (Ydr = 0,001949 D+ 0,006279B+ 0.000185; Ydr= 0.002531 D 0.003274 D+0.003488). In aonclusion, the linear quadrstic dose response equation from in vitro irradiation of Tc 99m with lymphocyte and buffy coat culture was thought to be useful for assessing Tc 99m indueed biological effects. And mononuclear cell cultures seem to be the most appropriate experimental rnodel for the assessment of biological dosimetry of internal irradiation of radionuclides.

SK 을지로 빌딩의 구조설계

김종호,Kim, Jong-Ho 한국건축구조기술사회 2004 건축구조 Vol.11 No.1

원발성 종격동 종양의 외과적 치료

김종호,오봉석,이동준,Kim, Jong-Ho,O, Bong-Seok,Lee, Dong-Jun 대한흉부심장혈관외과학회 1994 Journal of Chest Surgery (J Chest Surg) Vol.27 No.4

This report is a review of 98 cases of the primary mediastinal tumors which are treated in the Department of Thoracic and Cardiovascular Surgery, Chonnam University Hospital from January, 1985 to February, 1993 and divided two groups. One group is from January, 1985 to January, 1989 and named it Group 1[G1]. Another group is from February, 1989 to February, 1993 and named it Group 2[G2]. Chest pain is the most common clinical manifestation in the two groups. The common mediastinal tumors are teratoma 11 cases[29.7%], neurogenic tumor 7 cases[18.9%], thymoma 6 cases[16.2%], primary cyst 3 cases[8.1%] in Group 1 and thymoma 16 cases[26.2%], teratoma 15 cases[24.6%], neurogenic tumor 9 cases[14.8%], primary cyst 9 cases[14.8%] in Group 2. Therefore this result shows that the incidence of thymoma is increased in group 2. In benign tumors, the subjective symptoms are 64.3% in group 1 and 63.6% in group 2. In malignant tumors, they are 100% in group 1 and 82.4% in group 2. this result shows that asymptomatic malignant tumors are increased in group 2. The successful excision is done in all of the 71 benign tumors except one. In malignant tumors, the complete surgical excision is increased from 11.1% in group 1 to 41.2% in group 2.

저 복잡도의 H.264/AVC를 위한 고속 인트라 모드 선택 기법

김종호,정제창,Kim, Jong-Ho,Jeong, Je-Chang 한국통신학회 2005 韓國通信學會論文誌 Vol.30 No.11c

H.264/AVC는 부호화 성능을 향상시키기 위해 많은 최신의 기술들을 채택하였지만, 그 결과 부호화기의 복잡도가 매우 증가하였다. 특히 화면내(intra) 예측 부호화에서는 주변블록과의 방향성 상관도에 따라 4${\times}$4 휘도블록은 9개, 16${\times}$16 휘도블록과 8${\times}$8 색차블록은 각각 4개의 부호화 모드가 있는데, 이들 중 최적의 모드는 율-왜곡 최적화(RDO) 기법에 의해 선택한다. 따라서 하나의 매크로블록을 부호화하기 위해서는 592번의 RDO 계산을 수행해야 한다. 본 논문에서는 간단한 구조의 방향성 마스크와 주변블록의 모드정보를 이용하여 RDO 계산의 대상이 되는 모드의 개수를 줄임으로써 부호화 복잡도를 줄이는 알고리즘을 제안한다. 제안한 방법은 RDO 계산을 최대132회로 줄이고 부호화 시간을 전역탐색(exhaustive search)에 비해 $70\%$까지 줄이면서 PSNR 및 비트율 변화가 거의 없음을 실험을 통해 보이고 있다. The emerging H.264/AVC video coding standard improves coding performance significantly by adopting many advanced techniques. This is achieved at the expense of great increasing encoder complexity. Specifically the intra prediction using RDO examines all possible combinations of coding modes, which depend on spatial directional correlation with adjacent blocks. For 4${\times}$4 luma blocks, there are 9 modes, and for 16${\times}$16 luma and 8${\times}$8 chroma blocks, there are 4 modes, respectively. Therefore the number of mode combinations for each macroblock is 592. This paper presents a method to reduce the RDO complexity using simple directional masks and neighboring modes. According to the proposed method, we reduce the number of mode combinations to 132 at the most. Experimental results show the proposed method reduces the encoding time up to $70\%$ with negligible loss of PSNR and bitrate increase compared to the H.264/AVC exhaustive search.

추간원판절제술후 발생한 동-정맥루공 수술치험 1례

김종호,김용진,Kim, Jong-Ho,Kim, Yong-Jin 대한흉부심장혈관외과학회 1982 Journal of Chest Surgery (J Chest Surg) Vol.15 No.4

A vascular complication caused by lumbar disc surgery is not infrequent till recently after the first report by Linton & White in 1945. In October 1980, we experienced one case of arteriovenous fistula following lumbar disc surgery in the department of thoracic surgery, CAFGH. The A-V fistula was situated between left common iliac artery and vein, which was confirmed by angiography easily. The A-V fistula was corrected surgically by Taylor`s method successfully without complication.

흉부총상에 대한 임상적 고찰

김종호,김용진,서경필,Kim, Jong-Ho,Kim, Yong-Jin,Seo, Gyeong-Pil 대한흉부심장혈관외과학회 1982 Journal of Chest Surgery (J Chest Surg) Vol.15 No.4

A clinical analysis of 82 cases who were sustained the penetrating gun-shot wound in the chest by 8 bullets was done during 4~ year-period from January 1978 to August 1982 in the department of thoracic surgery, CA FGH. Among 82 cases, 61 cases [74.4%] of them were brought to the Hospital by ambulance, 21 cases [25.6%] were by Helicopter and 76 cases [92.7%] of them were admitted within 4 hours after wounding. Thirty eight [46.3%] patients were treated by closed thoracotomy only, 19 cases [23.2%]by open thoracotomy, 18 cases [22.0%] by primary closure with debridement, and 7 cases [8.5%] by vascular surgery. Causes of open thoracotomy were due to massive intrapleural bleeding in 16 cases, rupture of diaphragm in 2 Gases, and heart injury in one case. Among 25 cases of surgical complications, wound infection was most common in 16 cases [53.5%] and recurrent pneumothorax in 3 cases [10%], empyema in 3 cases [10%], and BPF in one case [3.3%]. Hospital mortality was seen in 6 cases due to hypovolemic shock and respiratory insufficiency in 4 cases, spinal shock in 2 cases due to spinal injury.

제너다이오드의 열화평가를 위한 전압제어 출력 전류원 개발

김종호,장홍기,권영목,최규식,Kim, Jong-ho,Chang, Hong-ki,Kwon, Young-mok,Che, Gyu-shik 한국항행학회 2017 韓國航行學會論文誌 Vol.21 No.5

전자회로에서 부하가 제너다이오드일 경우, 입력전압에 의해 부하의 전류를 제어하고자 할 때 제너다이오드의 항복전압 특성에 따라 제어하고자 하는 출력전류가 변하기 때문에 기존의 전압제어 전류 생성 방법을 적용할 수 없다. 이 논문에서는 입력전압을 이용하여 정격치보다 큰 전류를 제너다이오드에 인가하여 부품의 수명시험을 할 때, 제너다이오드가 경년열화에 의하여 항복전압의 특성이 변하여 부하전압이 달라져도 이에 관계없이 동일한 전류를 낼 수 있는 회로를 개발하였다. 이 방법으로 구성된 회로를 실증하기 위해 각 블럭의 부품 값을 적용하고 시뮬레이션 하여 입력전압으로 출력전류를 선형적으로 제어하는 결과를 확인하였다. 결과에 의하면 우리가 측정하고자 하는 항복전압 이상의 입력전압에 대해서 출력전류가 선형적으로 변하며 제너다이오드의 경년열화에 의한 항복전압의 변화와 관계없이 일정한 전류가 흐르는 것을 확인하였다. When zenor diode load current is necessary to be controlled by input voltage as a circuit load, existing voltage controlling method cannot be applied to it because the output current of zenor diode is changed due to breakdown voltage variations. We propose input voltage controlled output current source regardless of zenor breakdown voltage variation due to degradation resulted from severe current applied electronic component life test as a circuit load in this paper. We show breakdown voltage characteristics of this zenor diode circuit through simulation, applying adequate values for each component in order to verify the circuit composed of that method, and then show the result in which output current is controlled by input voltage. We confirmed the output current varies proportional to input voltage, and developed circuit shows a constant value independent of zenor diode breakdown voltage variations due to component degradations.

사용자 중심의 정보제공을 위한 수리·수문·생태·침식 통합모델의 개발

김종호,Kim, Jong-Ho 한국수자원학회 2016 물과 미래(한국수자원학회지) Vol.49 No.7

회원작품 - 지리산국립공원사무소

김종호,최웅,Kim, Jong-Ho,Choe, Ung 대한건축사협회 2016 建築士 Vol.2016 No.1

겨울철에 대비한 모돈의 영양관리

김종호,Kim, Jong-Ho 대한양돈협회 1994 養豚 Vol.16 No.11