Bovine botulism outbreak associated with incidental consumption of presumably contaminated leftover food

( Jae Won Byun ),( Kyung Hyun Lee ),( Ha Young Kim ),( Soon Seek Yoon ),( Ji Youl Jung1 ),( Woo Seog Jeong1 ),( Jae Ku Oem ),( Jong Soo Lim ),( Myoung Heon Lee ),( You Chan Bae ) 한국예방수의학회(구 한국수의공중보건학회) 2013 예방수의학회지 Vol.37 No.1

Nine cattle among 18 in a native Korean herd died or were euthanized within 3 days. The affected cattle showed cowshed. The pigs and dogs had been fed leftover food originating from nearby restaurants, and the cattle could presumably reach the contaminated food in the pig troughs. Necropsy revealed a few chicken bones and red pepper pieces as well as large amounts of grain and rice straw hay mixed in the rumen. Botulism type D was isolated in the ruminal contents of one of the cattle. We speculated that the outbreak was associated with the cattle incidentally eating presumably contaminated leftover food from the pig trough.

Oxalate와 Enrofloxacin투여한 랫트신장에 대한 병리조직학적관찰

오원석,이차수,오규실,정원일,정재용,정다히,정규식 한국임상수의학회 2003 한국임상수의학회지 Vol.20 No.4

To investigate the renal effects of enrofloxacin administration on rats induced with dehydration or hyperoxaluria, male rats were treated with enrofloxacin of 50 mg to 500 mg/kg b.w.. The microscopical observations of kidney and urine sediment were carried out in the experimental groups. The result obtained were as follows; The male rats deprived of water for 72 hours and administered with enrofloxacin. As enrofloxacin administration dose was increased, clinical signs such as loss of appetite, depression, weakness, and loss of urine output became more severe. In the histopathological findings, there were hyperemia and hemorrhage in renal cortex, vacuolation and necrosis of renal tubular epithelia, proteinous casts within renal tubules. The male rats were orally administered with sodium oxalate and injected with enrofloxacin for 7days. As enrofloxacin administration dose was increased, clinical signs such as the loss of appetite and water consumption, and weakness became more severe. In the histopathological findings, there are hemorrhage of glomeruli and cortical hyperemia, vacuolation and necrosis of tubular epithelia, proteinous casts in renal tubules. In the microscopical findings of urine sediment, there are calcium oxalate crystal (diamond-like type) and magnesium ammonium phosphate crystals (rhomboid). The male rats were intraperitoneally injected with sodium oxalate and administered with enrofloxacin for 7days. As enrofloxacin administration dose was increased, clinical signs such as the loss of appetite and water consumption, weakness were more severe. In the histopathological findings, there were hyperemia and hemorrhage in both glomeruli and renal cortex. Severe necrosis of renal tubular epithelia, bluish materials within renal tubules were also found. In the microscopical findings of urine sediment, there were many calcium oxalate crystals. The present results suggest that enrofloxacin has some injurious effects in rats having dehydration or hyperoxaluria, and clinically, we should consider these renal injury effects when we use enrofloxacin in patients accompanied renal disease, dehydration and hyperoxaluria conditions.

홈쇼핑 기업과 소비재 중소기업의 해외 동반진출에 관한 사례연구

정소원(So Won Jeong),양희순(Heesoon Yang),정재은(Jae Eun Chung) 한국경영학회 2017 한국경영학회 통합학술발표논문집 Vol.2017 No.08

우리나라의 지속적인 경제발전과 경쟁력을 확보하기 위해서는 대기업과 중소기업의 간의 균형 잡힌 발전이 필요하다. 이에 대중소기업간 상생 및 해외 동반진출에 대한 관심이 높으며, 정부에서도 여러 가지 지원정책을 늘리고 있다. 이에 본 연구에서는 국내 홈쇼핑 기업과 소비재 중소기업의 해외 동반진출에 관한 인터뷰를 통해 홈쇼핑의 특수성을 고려한 효율적인 유통대기업과 중소기업의 해외 동반진출 확대 방안을 모색하고자 한다. 이를 위해 해외 동반진출을 하고 있는 3개의 홈쇼핑 기업을 대상을 인터뷰를 실시하였으며, 결과는 다음과 같다. 홈쇼핑 기업은 소비재 중소기업의 해외 판로 개척에 도움이 되며, 자원과 역량이 부족한 중소기업에게 경영 및 마케팅 역량을 활용할 수 있게 해준다. 홈쇼핑 기업이 소비재 중소기업을 지원하기 위해 영상을 제작하거나 언어를 번역해주기도 하며, 무역 통관과 관련된 서류를 지원해주기도 한다. 또한 시장개척단을 구성하여 해외시장 정보 제공 등의 지원을 한다. 그렇지만 아직까지는 홈쇼핑 기업에게 해외 동반진출이 주는 실질적인 혜택이 미미하기 때문에 장기적으로 서로 win-win할 수 있는 전략이 필요하다. 이를 위해 해외 동반진출을 독려할 수 있도록 실질적인 혜택을 제공해야 하며, 궁극적으로 CSV 개념을 실천할 수 있도록 해야 한다. There must be a balanced development of both conglomerates and small and mid-sized companies in order to secure constant economic growth and competitive edge of South Korea. Accordingly, high expectations are being placed on win-win growth and joint overseas expansion of conglomerates and small and mid-sized companies. This study seeks efficient ways to promote joint overseas expansion of major retailers and small and mid-sized companies considering the distinctiveness of home shopping by conducting interviews about joint overseas expansion of home shopping companies and small and mid-sized consumer goods companies in South Korea. Home shopping companies contribute to opening up overseas markets for small and mid-sized consumer goods companies, and allows them to make use of business and marketing competencies that they lack. Home shopping companies also produce visual materials or provide language translations, and help draw up documents for customs clearance in trading. They also form market development teams and provide information about the overseas markets. However, since the actual benefits from joint overseas expansion are minor for home shopping companies, there is a need for a strategy for win-win growth of both parties in the long run. To this end, it is necessary to provide substantial benefits to encourage joint overseas expansion and ultimately implement the concept of creating shared value (CSV).

用寒遠寒과 用熱遠熱에 대한 考察 : 六元正紀大論에서

채영진,신창환,임현택,여성원,한성규,이재원,정헌영,금경수 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

Five elements motion and six kinds of natural factors influence not only human disease but also difference of medicine effect. Because the climate of summer is very hot, that is easy to increase the properties of hot medicines, a doctor must be careful to use it in summer. Also the climate of winter is very cold, that is easy to increase the properties of cold medicines, a doctor must be careful to use it in winter. But in the certain conditions to use diaphoretics or purgatives, in spite of that regulation a doctor can use them.

보건관리대행 기관의 사업장내 진료에 대한 근로자 요구 및 실시 의향

원종욱,송재석,정선아,박화미,노재훈 大韓産業醫學會 2001 대한직업환경의학회지 Vol.13 No.1

목적 : 본 연구에서는 보건관리대행 사업에 있어 사업장내 진료에 대한 수요와 보건관리대행기관의 방문진료 제공에 대한 의향을 조사하여 사업장내 진료에 대한 욕구를 파악하고, 이를 토대로 사업장내 진료에 대한 기초적인 자료를 제공하는데 목적이 있다. 방법 : 근로자들의 의료이용 행태와 방문진료에 대한 요구도를 파악하기 위해 167개 보건관리대행 사업장의 사업주와 보건담당자, 그리고 1,350명의 근로자에게 설문 조사를 실시하였고, 사업주 121명(72.5%), 보건담당자 145명(86.8%), 근로자 816명(60.5%)이 응답하였다. 일차진료의 제공 가능성을 파악하기 위해서 전국의 66개 보건관리대행기관의 의사와 간호사 및 행정책임자에게 우편 설문조사를 실시하여 의사 31명 (47.0%), 간호사 38명(57.6%) 및 행정책임자 34명(51.5%)이 응답하였다. 결과 : 보건관리대행 사업을 수행하고 있는 의사의 87%와 간호사의 94%가 보건관리대행 업무를 담당하면서 많은 근로자들로부터 투약 등 진료를 요구받고 있었고, 100 %의 간호사와 행정책임자 94%, 의사의 76 %가 보건관리대행 사업에서 진료를 수행하는 것이 필요하다고 생각하고 있었다. 한편사업주의 85 %, 보건관리 담당자 86 %와 근로자81 %가 보건관리대행기관에서 사업장내 진료를 시행 할 때 이를 수용하겠다고 응답하였다.결론 대다수의 근로자와 사업주가 보건관리대행기관의 진료를 요구하고 있었고, 보건관리대행 기관의 의사와 간호사가 사업장에서의 진료를 수용할 의향이 있고, 직업성 뇌심혈 관계질환의 예방 등 필요성이 인정된다면 보건관리대행 의사의 사업장내 진료를 인정해야 한다고 생각된다. Objectives : This study was performed to survey worker's demands for worksite medical care and agency's intention for offering worksite medical care in Group Health Service Agency. Methods : One study subjects were employers, workers and office personnels in 167 factories. They were asked for medical care utilization behavior and worksite medical care demand. 121 employers(72.5%), 145 office personnels(86.8%) and 816 workers(60.5%) answered the questionnaire. The other subjects were doctors, nurses and administrators in 66 Group Health Service Agencies nationwide. They were asked for intention of offering worksite medical care in Group Health Service Agency through the mail survey. 31 doctors (47.0%), 38 nurses (57.6%) and 34 administrators answered the questionnaire. Results : 87 percentage of doctors and 94 percentage of nurses had experiences of being requested to prescribe and laboratory examination. All nurses, 94 percentage of administrators and 76 percentage of doctors thought that it was necessary to give medical treatment at worksite. Also in worksite 85 percentage of employers, 86 percentage of office personnels and 81 percentage of workers answered that they accepted the worksite medical care when it would be given. Conclusions : Worksite medical care should be permitted because almost of all workers and employers requested worksite medical care, and doctors and nurses in Group Health Service Agency were willing to give worksite medical care and there was necessity to prevent occupational cerebrovascular disease.

냉동ㆍ공조 장치에서 R-22와 자연냉매 R-290의 열전달과 사이클 특성

정재천,박기원,노건상,오후규 여수대학교 1998 論文集 Vol.12 No.2

A basic heat pump system was designed and manufactured, in which a pair of bare tube was constructed as main heat exchanger. New natural refrigerants R-290 and HCFC refrigerant R-22 were used. In this paper, cycle characteristics of global heat pump, evaporation and condensation heat transfer characteristics were studied and a basic data base for the optimum design of refrigeration and air-conditioning systems was obtained. On the condensing and evaporating heat transfer characteristics, the average heat transfer coefficient was obtained the higher value in R-290 than R-22 refrigerant. Characteristics of heat pump cycle were researched based on the compressor shaft power, cooling capacity and coefficient of performance. From these results, the heat pump cycle characteristics were more affected from the refrigerant properties and operating conditions. Considering the results, R-290 refrigerant has a sufficient ability to substitute R-22 due to its higher performance.

T-SCAN을 이용한 교정치료후의 교합접촉 변화에 관한 연구

정기훈,김재덕,김광원 대한치과교정학회 1995 대한치과교정학회지 Vol.25 No.3

본 연구는 교정치료가 끝난 26명의 환자에서 T-Scan을 이용하여 교정치료직후와 3개월후에 교합접촉의 변화를 구하여 시간의 경과에 따른 총접촉수의 변화와 전치부접촉수의 변화, 구치부 접촉수의 변화 및 총접촉되는 치아수와 전치부와 구치부의 접촉되는 치아수의 변화를 비교분석한 바 다음의 결론을 얻었다. 1. 평균적인 총접촉수의 변화는 교정치료 종료시 11.27개에서 3개월후 13.15개로 증가하였는데, 통계학적으로 유의한 차이를 보였다(p<0.05). 2. 전치부 접촉수에 있어서는 변화가 없었다. 3. 구치부 접촉수의 변화는 통계학적 유의성이 있었다(p<0.01). 총접촉수의 변화는 구치부 접촉수의 변화에 기인하였다. 4. 총접촉치아수에 있어 변화는 통계학적 유의성이 있었다(p<0.05). 5. 전치부의 접촉치아수는 약간 증가하기는 하였으나, 유의한 차이를 보이지 않았다(p>0.05). 6. 구치부 접촉치아수의 변화는 통계학적으로 유의성을 보였다(p<0.05). 7. 초기 치아접촉수와 시간의 경과에 따른 접촉수의 변화량은 약한 역상관관계를 보였는데, 이는 초기 접촉수가 적을수록 보다 많은 접촉수의 증가가 있었다는 것을 보인다(r=-0.38, p<0.05). This study was undertaken to investigate the changes of tooth contacts following orthodontic treatment, using T-Scan system. Occlusal contacts in maximum intercuspation were examined in 26 patients at the end of the active phase of orthodontic treatment and again 3 months into the retention phase to assess the initial posttreatment occlusal changes. The obtained results of this study were as follows : 1. The mean total number of contacts increased from 11.27 at the end of orthodontic to 13.15 at the follow up visit, which was found to be statistically significant (p<0.05). 2. The change of number of contacts on anterior teeth was unchanged. 3. The change of number of contacts on posterior teeth was found to be statistically significnat (p<0.01). 4. The change of total number of teeth in contact was significant (p<0.05). 5. The number of ant. teeth in contact was slightly increased, but Which was not found to be statistically significant(p>0.05). 6. The number of post. teeth in contact significantly increased, which was statistically significant (p<0.05). 7. A statistically significant relationship was found between the total number of contacts at the end of treatment and the change in the contacts over time. The fewer the number of tooth contact was at the end of orthodontic treatment, the greater number of tooth contact increased over time(r=-0.38, p<0.05).

민감도 분석을 이용한 겹치기 필릿용접의 용접변수 선정에 관한 연구

정재원,김일수,김학형,손성우,전광석 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

Arc welding process is one of the most important technologies to join metal plates. Robotic welding offers the reduced manufacturing cost sought, but its widespread use demands a means of sensing and correcting for inaccuracies in the part, the fixturing, and the robot. A number of problems that need to be addressed in robotic arc welding processes include sensing, joint tracking, and lack of adequate mathematical models for parameter prediction and quality control. Problems with parameter settings and quality control occur frequently in the GMA(Gas Metal Arc) welding process because of the large number of interactive parameters that must be set and accurately controlled. The objectives of this paper are to realize the mapping characteristics of bead width using a sensitivity analysis and multiple regression method, and finally select the most accurate model in order to control the weld quality(bead reinforcement area, bead penetration area) for lap joint fillet welding.

수직 냉각면이 있는 정방형내 성층유체의 열적거동에 관한 실험적 연구

정현철,윤재원,장원택,전승배,이동석,김병철 朝鮮大學校 機械技術硏究所 2007 機械技術硏究 Vol.10 No.1

This study was investigated by experimentals on the thermal behavior of stratified fluids in the square cavity with the vertical cooling surface by variation of initial temperature and cooling surface temperature and concluded as follows: 1. When the cooling surface temperature of the square cavity was -4℃. the supercooling phenomena was occurred every times regardless initial temperature of fluids and when -6℃ freezing was begun with out supercooling phenomena. 2. The higher the initial temperature was, the longer supercooling phenomena duration was, and the longer the supercooling phnomena was, the higher the temperature of the upper fluids was. 3. When the supercooling phenomena of water was occurred, the rate of temperature decrease of silicon oil was higher and when there was no supercooling phenomena, it was almost same the rate of temperature decrease.

민감도 분석을 이용한 필릿용접용 용접변수 선정에 관한 연구

정재원,김일수,김학형,손성우,김인주,전광석 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

Arc welding process is one of the most important technologies to join metal plates. Robotic welding offers the reduced manufacturing cost sought, but its widespread use demands a means of sensing and correcting for inaccuracies in the part, the fixturing, and the robot. A number of problems that need to be addressed in robotic arc welding processes include sensing, joint tracking, and lack of adequate mathematical models for parameter prediction and quality control, Problems with parameter settings and quality control occur frequently in the GMA(Gas Metal Arc) welding process because of the large number of interactive parameters that must be set and accurately controlled. The objectives of this paper are to realize the mapping characteristics of bead width using a sensitivity analysis and develop the neural network and multiple regression method, and finally select the most accurate model in order to control the weld qua1ity(bead width) for fillet welding. The experimental results show that the proposed neural network estimator can predict bead width with reasonable accuracy, and guarantee the uniform weld quality.