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염정국(J.K.Yeom),탁영조(Y.J.Tak),이상석(S.S.Lee),하종률(J.Y.Ha) 한국자동차공학회 1992 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In spite of economical efficiency, high reliability, a excellent chracteristic of generating power, internal combustion engine has problem of environmental pollution. Because of such reason, CO, HC, particulate and NOx must be reduced and the technique of combustion analysis need. This study aims to compare heat release by ensemble average of the existing method .with a consequence get by least squares method for pressure data. This paper proposes heat release computation method that can analyze combustion phenomenon of close the most truth straight, simple.<br/> In conclusion, we found that the least squares method of third-order fits computational method of heat release very well.<br/>
Arbitrarily Primed PCR을 이용한 한국에서 유행하는 황색포도상구균의 분자유전형에 대한 연구
황선철,이창규,이승관,이동호,정수경,최현일,윤건석,정운원,윤효숙 高麗大學校 倂設 保健大學 保健科學硏究所 1998 保健科學論集 Vol.24 No.1
Eighty methicillin-resistant Staphylococcus aureus(MRSA) isolates were typed by applying arbitrarily primed-PCR(AP-PCR) method to clarify their distribution of molecular genetical characteristics. Among 40 gentamicin resistant strains of MRSA(GR-MRSA), 33 isolates drawn on the dendrogram fell into a single cluster at the similarity level of 90% when primer S₁ was used. However, with the primer S₂, 24 out of 40 strains fell into a single cluster at the similiarity 90%. In the meantime, 22 out of 40 strains amplified fell into a single cluster at the similarity of 90% when the primer E₂ was used. From the combined data obtained, it can be statistically said that 65.8% of GR-MRSA isolates are related with genetical characteristics. In 40 gentamycin susceptible MRSA(GS-MRSA) strains, 18, 19 and 13 strains drawn on the dendrogram fell into a single cluster at a similiarity level of 90% with the primers S₁, S₂ and E₂, respectively. From the combined data obtained by the three above AP-PCR profiles, it can be concluded that 41.7% of GS-MRSA isolates showed high relatedness genetically.
김강식,이근상,김희석,나기준 한국축산학회 1985 한국축산학회지 Vol.27 No.4
This experiment was carried out to compare the growth rates and reproductive traits between Korean native cattle and Charolais crossbreeds. The results obtained were summarized as follows: The body weight of Charolais crossbreed (CK) was 41, 39, 44, 29% heavier at the age of 3, 6, 12 and 18 months than that of Korean native cattle(K) on the farm performance and was 26, 47, 58, 51% heavier on the station performance test(S.P.T). In the Charolais back-crossbreed (CCK) was S5, 44, 46, 40% heavier on the farm performance and 50, 49, 69, 55% on S.P.T. Body measurement of the crossbreeds was taller, wider and longer than that of K. Age and body weight at puberty of the crossbreeds was earlier and heavier than that of K. The type of parturition of Charolais crossbreeds was 92.6% in normal and 7.4% in abnormal in CK, and 94%, 6,0% in CCK, respectively.