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제주제역 도축돼지의 폐렴병변에서 Mycoplasma hyopneumoniae 항원 및 혈중 항체 조사 연구
김승일,양형석,김재훈,배종희 한국임상수의학회 2005 한국임상수의학회지 Vol.22 No.4
Enzootic pneumonia caused by Mycoplasma hyopneumoniae is responsible for major economic losses in pig herds of world wide. Mycoplasma hyopneumoniaecan also act as a primary pathogen of porcine respiratory disease complex followed by bacterial or viral infection. This study was carried out to investigate the prevalence of mycoplasmal pneumonia of slaughtered pigs in Jeju for two years. The lungs and sera of 214 cases were examined for gross and microscopic lesions of the lungs, immunohistichemistry test for Mycoplasma hyopneumoniae antigen and enzyme-linked immunohistichemistry assay (ELISA) for serum antibody titer. Pulmonary consolidation was observed in the lungs of 163 pigs (76.1%) with average gross lesion score of 6.0%. Bronchointerstitial pneumonia was most frequently observed (78.5%). The incidence of pulmonary consolidation was decreased in vaccinated pigs compared to that of non-vaccinated pigs. The rate of consolidation in the lungs was significantly decreased in the vaccinated pigs (P<0.05). Antigen of Mycoplasma hyopneumoniae was identified by immunoperoxidase test in the lungs of 174 pigs (81.3%). ELISA antibodies to Mycoplasma hyopneumoniaewere detected in 154 pigs (72.0%). These results showed the prevalence of swine pneumonia and the incidence of Mycoplasma hyopneumoniae in slaughtered pigs of Jeju province. We expect that these results would be helpful for the control of swine mycoplasmal pneumonia and porcine respiratory disease complex in Jeju.
김승일 한국경영법률학회 2009 經營法律 Vol.19 No.2
The relations between large and small enterprises has been a important issue in Korean economy. Especially the subcontract system between large and small enterprises has received more attention. The performance gap between large and small enterprises has got been enlarged since exchange crisis. Some SMEs as a subcontractor raise various questions about unfair act from large enterprise partners. Many stakeholders have concerned about the contents of the provisions in subcontract law. This paper has dealt with the datum and problems concerned with the subcontract transactions and the law. I think that there are many problems in transactions orders as a market economy, especially between large and small enterprises. Some of them will be much worth to be discussed. I hope this paper will be helpful to discuss about transactions order as a subcontract system. And thereafter I hope also Korean transactions order mechanism as a subcontract system can be upgraded.