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송승찬,신진호,강석우,박경남,최호순,박근태,문희식,기춘석,이성희,윤병철,노우균,조균석,이민호 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.3
Tetrodotoxin is a neurotoxin produced by about 90 species of puffer fish and causes paralysis of central nervous system and peripheral nerves by blocking the movement of all monovalent cation. Ingestion of tetrodotoxin produces clinical manifestations such as paresthesias(within 10-45 min), vomiting, lightheadedness, salivation, muscle twitching, dysphagia, difficulty in speaking, convulsion and death that expressed by cardiopulmonary arrest with loss of brain stem reflex sometimes. Tetrodotoxin prevents or delays ischemia induced neuronal death by way of following 3 mechanisms. Firstly, it reduces the energy demand of the brain tissues. Secondly, it delays or even prevents anoxic depolarization. Finally, it deminishes ischemia induced cell swelling and cerebral edema. We report a case of puffer fish poisoning which presented with cardiopulmonary arrest and loss of brain stem reflex, but completely recovered by aggressive cardiopulmonary resuscitation.
宋旼根,孫承佑,朱恩選 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-
The production of hydrogen fuel depends basically on the water electrolysis. The study on the overpotential which activates the hydrogen production is the core to elevate the hydrogen production efficiency on the principle. Characteristics according to the macroscopic effects of the ultrasonic are extracted to elevate the hydrogen production efficiency through measuring the hydrogen production quantity by using the electrolytic cell of the Hoffmann manner. For the above, several devices for measuring by new ideas are developed and applied. Characteristics on the overpotential decrease and the Debye phenomena are observed through the micro reaction by ultrasonic in electrolytic cell. For the above, the electrochemical analyzer, i.e., BAS is applied. Experiments with ultrasonic forcing into 4 kinds of solution such as city water, city water plus nitrogen, distilled water, and distilled water plus nitrogen are carried out. Various methods of ultrasonic forcing such as the improving method, the direct vibrating method, the indirect vibrating method, and etc., are applied as the transmissible method of ultrasonic force. The data base is constructed to design a new ultrasonic modern electrolyzer by using all the above data.
물 전해에서 압력 Sensor System을 이용한 초음파 영향에 관한 연구
孫承佑,宋旼根,朱恩選 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-
The production of hydrogen fuel depends basically on the water electrolysis. The ultrasonic effects the decrease of the overpotential in a water electrolysis. The study on the overpotential which activates the hydrogen production is the core to elevate the hydrogen production efficiency on the principle. A pressure sensor system by new ideas is developed and applied. Solutions are 4 kinds of KOH concentration such as 0%, 10%, 20%, and 30%. Two frequency bands of the ultrasonic transducer are 28㎑ and 2㎑. Characteristics of hydrogen production quantity according to the change of temperature with ultrasonic forcing are investigated and examined.
수평유동장에서 난류증진을 위한 초음파 적용에 관한 연구
최우창,박영호,송민근,주은선 경상대학교 생산기술연구소 2000 生産技術硏究所論文集 Vol.16 No.-
A study on the application of ultrasonic vibration for the turbulence enhancement in a horizontal flow field was carried out by laying emphasis of the Reynolds numberand the ultrasonic incidence angle on the laminar flow field. A large water tank was made of the transparent acrylic plates and city water of 25℃ was used as working fluid. Angles of the ultrasonic oscillator such as 30°, 45° , 60° , 90° , 120° , 135° and 150° were selected and experiments for the above were made. Data, such as time mean velocity vector and time mean turbulent intensity which was obtained by PIV measurement, were examined, compared and discussed at Reynolds No. 2,000 and 4,000 to know the degree of turbulence enhancement in each case.
PIV계측에 의한 충돌제트에서 사각 난류촉진체 주변의 유동특성 연구
李相範,孫承佑,宋旼根,朱恩選 경상대학교 생산기술연구소 2001 工學硏究院論文集 Vol.1 No.-
The objective of this study is to investigate characteristics of flow by the square turbulence promoter and the selection of a proper impinging distance. The promoter was set up vertically to the way of a nozzle exit flow, each pitch fixed to be 30㎜ and the measurement region divided by 4 section(A, B, C, D). The characteristics of flow field were investigated in each case of the distance rate from the nozzle exit to impinging plate(H/B=4, 6, 8, 10) changing nozzle exit diameter(Ψ10, 17, 23) and Re=4,000. As the experimental result by using PIV measurement at Ψ17 and H/B=6 in the free jet, the turbulence intensity showed a big strength at A section, a decreasing of 20.1% at B section, an increasing of 10% at C section and an increasing of 10.9% at D section. On the other side, when the square turbulent promoter set up, The flow showed a tendency with the free jet at A section, a decreasing of 16.2% at B section, a decreasing of 1.5% at C section and an increasing of 8.3% at D section, It has been shown that for enhancing the turbulence intensity are the case of Ψ17 and H/B=8 in the B section is the propel condition.
홍의실,나병규,김민옥,유일영,채지영,채희복,윤세진,이상전,송형근,박길선,정현용 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.2
대장 지방종은 주로 우측 결장에 호발하고 특히 회맹판 부위와 맹장 부위에 호발한다. 또한 50~60대에 빈도가 높고 증상이 있는 환자에서 장중첩증이 높게는 40~50%에서 보고되고 있어 성인 장중첩증의 원인으로 중요한 비중을 차지한다. 특히 성인 장중첩증 및 장폐쇄의 중요 원인인 악성 종양과 임상 양상이 유사하여 감별진단이 중요하다. 저자들은 반복적인 복통을 주소로 내원한 환자에서 맹장의 4×5㎝의 점막하 지방종이 말단 회장부위와 반복적인 장중첩중이 발생했던 1례를 부분 절제술로 치료하여 양호한 임상 경과를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Lipomas are one of the most common benign nonepithelial tumors of the colon which are often detected incidentally by radiologic investigation or on operation. These tumors are usually without specific symptoms. Colonic lipomas occur most often in the right colon, particularly in the ileocecal valve and the cecum. Most patients are asymptomatic. but tumors larger than 2 cm tend to produce a change in bowel habit. abdominal pain. rectorrhagia and complications including luminal obstruction or intestinal intussusception. Diagnosis can be made by colonoscopy abdominal CT. MRI, or barium enema. We report a case of lipoma of the cecum that originated in the submucosa and presented as a intussusception in a 50-year-old woman with a brief review of the literature.
서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1997)
김재홍,문득곤,김정수,김용준,임동진,박상훈,김희성,이민수,송기훈,김갑형,김형석,성소영,이인섭,김석우,황지환,조창근,김경문,부태성 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.3
Background : In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. Objective & Methods : For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1997. 99 strains of N. gonorrhoeae were isolated, among which 45(45.5%) were PPNG. Conclusion : The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 45.5% in 1997.
서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
Song, Young Geun,Park, Jae Yeol,Suh, Jun Min,Shim, Young-Seok,Yi, Seung Yeop,Jang, Ho Won,Kim, Sangtae,Yuk, Jong Min,Ju, Byeong-Kwon,Kang, Chong-Yun American Chemical Society 2019 Chemistry of materials Vol.31 No.1
<P>The use of heterojunctions based on Rh-decorated WO<SUB>3</SUB> nanorods is an effective strategy for achieving high-performance gas sensors for volatile organic compounds (VOCs), especially acetone (CH<SUB>3</SUB>COCH<SUB>3</SUB>). Herein, we successfully fabricated Rh-decorated WO<SUB>3</SUB> nanorods with one-dimensional (1D) structures by glancing angle deposition (GLAD). Interestingly, morphological changes characterized by anomalous surfaces with numerous regions of negative curvature were observed upon decoration of the bare WO<SUB>3</SUB> nanorods with Rh, which were systematically investigated on the basis of impeded surface diffusion and trapping effects. The improvements of gas sensing properties were stepwisely demonstrated by synergistic effects involving transition of Rh, high chemical potential of the negative curvature, primary decomposition at the top side, and highly ordered nanostructures. We are confident that the results provide new insight into the synthesis of effective nanostructures and contribute to a variety of applications including battery, solar water splitting, and sensor devices.</P> [FIG OMISSION]</BR>