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김환기,송호면,김호열 全北大學校 附設 都市및環境硏究所 1998 都市 및 環境硏究 Vol.13 No.1
Generally, Sulfate reduction is called as decomposition, and many investigations have been performed to prevent from producing H_2S in our nature owing to improper impact to environment. In this study, the basic experiments were performed to prove the influence of nitrate upon sulfate reduction. Tube-type and sealed-type reactor were used to examine the reactions in the microorganism suspended growth and adhesive. The obtained results from this study were as follows; 1. In the sealed-type reactor, the tendency of denitrification was similar to the basic theory But although denitrification was gone on, sulfate reduction did not happened with denitrification simultaneously. 2. In the tube-type reactor BIO-film gradually was formed in the operation process early. The concentration of nitrate and sulfate was shown to decrease both inside the reactor. 3. Therefore, in the tube-type reactor to prevent production of H_2S, the concentration of nitrate has to be maintained constantly.
IDEA 알고리듬의 소프트웨어 구현과 하드웨어에 적용 가능한 VHDL 설계
김락현,염흥렬,윤호선 순천향대학교 부설 산업기술연구소 1998 순천향 산업기술연구소논문집 Vol.4 No.2
IDEA is a well-known block cipher algorithm with 64-bits input-length and 128-bits output-length, which is used in PGP of Internet. In this paper, we have presented the C++ Language software program and VHDL design for hard ware implementation. The structure of software has been designed in order to minimize the memory size and operate with high-speed by using C++ language. As a result, we have obtained the optimized software structure, and hardware structure for VHDL implementation, which allows a high-speed operation and a minimized chip size The result of this paper can be used for cryptographic devices using IDEA.
김철호,이계영,심영수,김건열,한용철,한성구,정희순,임정기,박재형 대한내과학회 1988 대한내과학회지 Vol.35 No.3
Unilateral pulmonary vein atresia is a rare congenital disease and is frequently associated with intracardiac anomalies. It is usually diagnosed in childhood and is very rarely diagnosed in adulthood. A case of unilateral pulmonary vein atresia in a 20-year old female is de- scribed. The relevant findings were symptoms of exertional dyspnea, roentgenographic evidence of decreased lung volume, increased interstitial infiltration with septal lines in the involved side (right), and aoscence of blood flow in a radionuclide perfusion scan. Pulmonary angiography showed an extremely small right pulmonary artery and thining of the peripheral branches, and nonvisualization of the draining pulmonary veins. Bronchial arteriography showed rommunication between the bronchial artery and the right pulmonary artery and it was drained to the left pulmonary artery. Cardiac catheterization showed no intracardiac anomaly. The right bronchography was normal; pulmonary function studies showed a pure restrictive pattern and markedly in creased physiologic dead space. MRI showed no visible right pulmonary vein.
염흥열,윤호선,김상필 순천향대학교 부설 산업기술연구소 1997 순천향 산업기술연구소논문집 Vol.3 No.2
In this paper, we present the access control technique which is one of the essential functions for VOD. As the BISDN widely spreads, need for VOD services will rapidly be increased. Access control technique is needed to allow VOD system to prevent the unauthorized persons from using the unauthorized service. We have implemented the authentication scheme with C language on UNIX. We have used 768-bit RSA signature scheme and MD5 hash function for implementing the authentication scheme.
염흥열,윤호선,김상필,이강석 순천향대학교 부설 산업기술연구소 1997 순천향 산업기술연구소논문집 Vol.3 No.2
본 논문에서는 무선 근거리 통신망에서의 프로토콜 구조를 분석한 후, 이를 바탕으로 무선 근거리 통신망에 적용 가능한 정보보호 규격을 제시하고, 기존의 보안 알고리듬의 문제점을 제시하며 그에 대한 해결 방안을 제시하여 정보보호 서비스를 실현하기 위한 정보보호 메카니듬을 도출한다.
위암종과 Epstein-Barr 바이러스와의 연관성에 대한 연구
심광용,김호영,김효열,백순구,권상옥,조미연,이창훈,이종인 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-
Objectives: Epstein-Barr virus (EBV) has been known to be linked to a spectrum of neoplastic conditions, including nasopharyngeal carcinoma, Burkitt's lymphoma, peripheral T-cell lymphoma and Hodgkin's disease. This study aims to investigate the association of EBV with gastric carcinoma in Korea. Methods: Fifty-three cases of gastric adenocarcinoma were studied for evidence of EBV infection by EBV-encoded small RNA (EBER) in situ hybridization (ISH) on the paraffin sections and amplifying the EBV genome encoding envelop glycoprotein (gp220) with polymerase chain reaction (PCR) in fresh gastric cancer specimens. Results: EBER was detected in 7 (13.2%) of 53 gastric carcinomas and all cases were male. In 6 (85.7%) of 7 EBER-positive cases, the tumors were located in the upper and middle part of the stomach. EBER ISH study showed strong positivity in all the tumor cells, but negativity in surrouning lymphocytes, stromal cells and normal gastric mucosa. DNA PCR was positive in 23 (43.4%) of 53 gastric carcinomas, including all of 7 EBER-positive cases. Conclusion: We could observe some association of EBV with gastric carcinoma, and our findings about the charateristics of EBV-positive gastric cancers involving sex, site and histological type are similar to those in Japan. However, EBV-positive rate of gastric cancer is higher than in Japan and lower than in Western countries. Further studies to elucidate oncogenic mechanism of EBV in gastric cancer should be performed.
공황장애에서 Paroxetine 단기약물치료가 심리적 상태에 미치는 영향
이소영,김지혜,김율리,강은호,이동수,유범희 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.3
Objectives : This study was designed to evaluate clinical effect of paroxetine treatment and to explore psychological Pre-dictors of treatment response. Methods : Patients (n=26) who met DSM-IV criteria for panic disorder with or without agoraphobia were treated by Pa-roxetine for 12 weeks. We assessed symptom improvement using Clinical Global Impression (CGI), and clinical characteristics using Anxiety Sen&itivity Index (ASI), Anxious Thoughts and Tendencies (AT & T), Agoraphobic Cognition Questionnaire (ACQ), Body Sensation Questionnaire (BSQ), Beck Anxiety Inventory (BAI), and Beck Depression Inventory (BDI). T-test, correlation analysis, and stepwise multiple regression analysis were performed. Results : Panic patients showed significant improvement in seventy of illness and each clinical characteristic after 12 weeks of paroxetine treatment. There were significant correlations among severity of illness, anxiety, and depression, and subjective seventy was related with catastrophic thoughts. The more catastrophic thoughts and the higher sensitivity of body sensation, Patients had the worse symptom improvement they shorved. Multiple regression analysis showed that catastrophic thought related to agoraphobia was the best predictor of symptom improvement (22%). Conclusion : This study suggests that short-term treatment of paroxetine is effective in panic disorder with or without ago-raphobia, and that catastrophic thought could be a predictor of poor treatment response. Thus cognitive intervention on Catastro-phic thoughts may play an important role in symptom improvement in panic disorder.
황현정;이호섭;전대현;김동열;김진일 東義大學校産業技術開發硏究所 2012 産業技術硏究誌 Vol.26 No.-
본 연구에서는 각종 센서를 통해 교통사고 현장의 상황을 자동으로 저장, 분석할 수 있는 스마트폰 블랙박스를 설계하고 구현하였다. 기존의 웹 캠 형식의 블랙박스 기능을 탈피하고, 사용자가 휴대하기 편한 스마트 폰이라는 장점을 활용해 차량뿐만 아니라 오토바이, 자전거에도 모두 사용가능할 수 있도록 안드로이드 플랫폼을 이용하여 블랙박스 기능을 개발하였다. 또한, 사고발생시 사전에 등록한 번호로 사고위치를 SMS 문자로 전송하여 사고 상황을 노출하도록 설계되었다.