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요골맥파 측정을 통한 장기간의 태권도 수련이 심혈관계 건강에 미치는 영향
유정식(Jeong-sik Yoo),최근훈(Geun-hun Choi),강희정(Hee-jeong Kang),박현(Hyon Park) 한국생활환경학회 2013 한국생활환경학회지 Vol.20 No.3
The systolic augmentation index (AIx) can be obtained from the central arteries and peripheral arteries. It has been proven that the AIx in the central arteries, including the aorta and carotid arteries, changes with age. The investigation to find possible usage of AIx from radial artery as an index for vascular aging was done. Radial pulse wave were obtained from 52 subjects(26 taekwondo athletes age 20.83±0.20 yrs, height 178.31±0.88 cm, weight 70.98±1.59 kg, BMI 22.29±0.40 kg/m2, 26 control age 21.07±0.34 yrs, height 174.79±0.98 cm, weight 68.71±1.87 kg, BMI 22.42±0.48 kg/m2) with no cardiovascular disease, using radial tonometry. Heart rate(HR) was significantly lower in taekwondo athletes than in control(athletes 65.02±0.82 beat/min, control 71.81±0.80 beat/min, p<.000). The value of main peak(h1) was significantly higher in taekwondo athletes than in control(athletes 192.90±3.86mmHg, control 173.45±3.22 mmHg, p<.000). The value of contract incident duration ratio(t1/t) was significantly lower in taekwondo athletes than in control(athletes 0.12±0.00, control 0.13±0.01, p<.000). The value of systolic duration ratio(t4/t) was significantly lower in taekwondo athletes than in control(athletes 0.33±0.00, control 0.35±0.00, p<.000). The value of high pressure duration ratio(w/t) was significantly lower in taekwondo athletes than in control(athletes 0.098±0.00, control 0.104±0.00, p<.05). AIx had no difference between 2 groups(athletes 49.68±1.07, control 50.27±16.45, p>.05). These findings indicate that the effect of taekwondo training had positive effects on radial pulse wave.
돼지와 양돈장 및 농장 관계자 간에 발생하는 항생제 내성 유전자 전파 조사를 위한 플라스미드 염기서열 분석
정유진 ( Yujin Jeong ),이선우 ( Sunwoo Lee ),유정식 ( Jung Sik Yoo ),이동훈 ( Dong-hun Lee ),운노타쯔 ( Tatsuya Unno ) 한국환경농학회 2023 한국환경농학회지 Vol.42 No.4
Antibiotics either kill or inhibit the growth of bacteria. However, antibiotic-resistant bacteria are difficult to treat with antibiotics. Infections caused by such bacteria often lead to severe diseases. Antibiotic resistance genes (ARG) can be horizontally transmitted across different bacterial species, necessitating a comprehensive understanding of how ARGs spread across various environments. In this study, we analyzed the plasmid sequences of 33 extended-spectrum beta-lactamases (ESBL) producing Escherichia coli isolated from pigs, farms, and their owners. We conducted an antibiotic susceptibility test (AST) with aztreonam and seven other antibiotics, as well as whole genome sequencing (WGS) of the strains using MinION. Our results demonstrated that the plasmids that did not harbor ARGs were mostly nonconjugative, whereas the plasmids that harbored ARGs were conjugative. The arrangement of these ARGs exhibited a pattern of organization featuring a series of ARG cassettes, some of which were identical across the isolates collected from different sources. Therefore, this study suggests that the sets of ARG cassettes on plasmids were mostly shared between pigs and their owners. Hence, enhanced surveillance of ARG should be im- plemented in farm environments to proactively mitigate the risk of antibiotic-resistant bacterial infections.
췌장질환의 감별진단 : CT 상 복강동맥 및 상장간말 주변부 변화의 의의
권량,김영환,김기황,유정식,김지형,김동국,이성일,안창수,오세정,Kwon, Ryang,Kim, Yeong-Hwan,Kim, Gi-Hwang,Yoo, Jeong-Sik,Kim, Ji-Hyeong,Kim, Dong-Guk,Lee, Sung-Il,Ahn, Chang-Su,O, Se-Jeong 대한영상의학회 1998 대한영상의학회지 Vol.38 No.3
Purpose : To classify perivascular change in the celiac trunk and SMA occurring in pancreatic disease and toevaluate its significance in differential diagnosis. Materials and Methods : In 73 patients with pancreaticdisease (42, acute pancreatitis; 14, chronic pancreatitis; 17, panreatic cancer) abdominal CT findings wereretrospectively reviewed. We defined " infiltration" as linear or irregular density and "thickening" as presenceof a soft tissue mantle surrounding the vessel, and statistically evaluated the usefulness of these factors forthe differential diagnosis of pancreatic diseases. Results : In 13/42 cases of acute pancreatitis (31%), 4/14 ofchronic pancreatitis (28.6%), and 6/17 of pancreatic cancer (35.3%), periceliac infiltration was observed; thefrequencies were not statistically significant (p=0.916). Peri-SMA infiltration was demonstrated in 9/42 of acutepancreatitis (21.4%), 4/14 of chronic pancreatitis (28.6%), and 5/17 of pancreatic cancer (29.4%); again, thesefrequencies were not statistically significant (p=0.758). Thickening of the celiac trunk and SMA was observed onlyin pancreatic cancer, in 3/17 (17.6%) and 7/17(41.2%) cases, respectively, with statistical significance (P<0.05).Conclusion : Thickening of the celiac trunk and SMA is a valuable finding in the differential diagnosis ofpancreatic inflammatory disease and pancreatic cancer. When applied to the differential diagnosis of pancreaticdisease, perivaseular change should be classified as either infiltration or thickening.ation or thickening.
손주익(Ju Ik Son),이준희(Jun Hee Lee),이상인(Sang In Lee),정준표(Jun Pyo Lee),송기섭(Kee Sup Song),박진아(Jin A Park),최성우(Sung Woo Choi),이정일(Jung Il Lee),이관식(Kwan Sik Lee),유정식(Jeong Sik Yoo),최승호(Seung Ho Choi),박찬일(Chan 대한소화기학회 2001 대한소화기학회지 Vol.38 No.4
Gastroduodenal intussusception is a rare condition caused by the prolapse of a gastric tumor and subsequent invagination of the gastric wall into the duodenum. The lead point of the intussusception is usually a benign gastric tumor such as adenoma, lipoma, and leiomyoma. Only a small number was attributed to gastric carcinoma, giant solitary gastric heterotopia, Menetrier's disease, and Peutz-Jeghers syndrome. In Korea, only two cases of gastroduodenal intussusception caused by adenoma and by leiomyoma have been reported. We experienced a case of gastroduodenal intussusception caused by gastric carcinoid tumor in a 76-year-old woman. Interestingly, she had been diagnosed as having gastric carcinoid tumor metastasized to the liver 5 years and 3 months before this gastroduodenal intussusception occurred. This rare clinical setting of gastroduodenal intussusception by a rare cause is reported with a review of the literature. (Korean J Gastroenterol 2001;38:288-291)
남북경제 교류 또는 통합이 산업의 지역분포에 미치는 영향 : 이론적 분석
유정식,이태정 연세대학교 통일연구원 1999 통일연구 Vol.3 No.2
This paper presents a general equilibrium model that analyzed the impact of trades between North and South Korea on the regional distribution of industries.We found that the economic interaction is limited to the trade of goods and services the manufacturing industries concentrate more severely in South Korea.Even if the investment of South Korean capital in North is allowed, it doesn't necessarily take place.South Korean firms will actually build a plant in North only if the start-up cost is less than the sum of reductions in the transportation cost and the production cost.The South Korean government's investment in the infrastructure within North Korea encourages relocation of South Korean firms, which targets the North Korean domestic market, in North.On the contrary, the South Korean government's investment in the infrastructure between South and North Korea discourages such a movement.
현역 군인 발생을 중심으로 본 2000년도 국내 삼일열 말라리아 발생 현황
박재원,김영아,염준섭,유정식,양병국,채종일 대한감염학회 2001 감염 Vol.33 No.4
Background : Since 1997, the annual case occurrence of vivax malaria in the Republic of Korea have exceeded 1,000 cases since 1997. The military is thought to be an important source of the current outbreak. We collected various informations about malaria cases (soldiers, veterans and civilians) which occurred in 2000, and analyzed the characteristics of the current outbreak. Methods : Informations about malaria cases of soldiers, veterans and civilians, including name, age, sex, day of onset, region, etc., were collected through the National Institute of Health. Results : Out of total 4,141 cases, 1,288 (31.1%) occurred in the military, 1,273 (30.7%) occurred among the veterans, and 1,580 (38.2%) occurred among civilians. The monthly case occurrence reached its peak in early August. Areas such as Cheolwon, Yeoncheon and Paju showed the highest prevalence. Conclusion : It is considered that the current malaria outbreak has escaped from the exponential growth phase, however, more attention should be paid to prevent further spreading of malaria infection. (Korean J Infect Dis 33:280∼284, 2001)
햇볕정책의 성공조건:남한기업의 북한진출에 대한 유인구조 분석
이태정,유정식 한국경제학회 2001 經濟學硏究 Vol.49 No.1
햇볕정책에 대한 논의는 대부분의 경우 남북간 경제교류의 확대가 북한지역의 산업발전에 긍정적인 영향을 줄 것이라는 전제 위에 이루어지고 있다. 그러나 실제로 북한지역의 산업이 활성화되기 위해서는 단순무역중심의 경제협력은 지양하고 북한에 대한 직접투자를 중심으로 경제협력이 추진되어야한다. 이는 제도적 여건이 마련되었다 하더라도 남한의 기업들이 실제로 북한지역에 설비투자를 하고 그곳에서 생산활동을 할 수 있는 경제적 조건이 충족될 때 가능하다 본 논문에서는 그러한 경제적 조건이 무엇인지를 제시할 수 있는 일반균형모형을 구축한다. 이 모형에 의하면, 남북간의 임금격차, 북한 내에 공장을 세울 때 소요되는 추가적인 설비비용, 노동집약도, 시장의 크기, 남북간, 북한내부 및 제3국으로의 운송비용의 크기 등이 남한기업들의 북한진출 유인에 중요한 영향을 미친다. 햇볕정책의 성공을 위해서는 남한정부가 북한당국과의 협상을 통해 인력조달에 대한 확고한 협조를 요구할 필요가 있으며, 상하수도 전력공급 등과 같은 토목공사비용을 낮추는 사회간접투자의 형태로 북한을 지원하는 것도 남한기업의 북한진출에 도움이 된다. 한편, 도로, 철도 및 항만 과 같은 운송관련 사회간접자본에 대한 투자는 진출하는 기업의 성격에 따라 그 효과가 다르게 나타나므로 투자우선 순위를 정함에 있어 신중을 기해야 한다. 모형에서 도출된 조건이 시사하는 바에 따르면 주어진 남북간의 임금격차하에서 설비비용이 적게들고 노동을 집약적으로 사용하는 산업의 북한 진출이 상대적으로 용이할 것으로 판단된다.