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나석한,최성현,랜친핸드,배형철,남명수,Na, Seuk-Han,Choi, Seong-Hyun,Renchinthand, Gereltuya,Bae, Hyoung-Churl,Nam, Myoung-Soo 한국축산식품학회 2008 한국축산식품학회지 Vol.28 No.3
This study was carried out to assess the fermentation properties of lactic acid bacteria (LAB) isolated from bovine colostrum and effects of feeding fermented colostrum feed on the growth to piglet. A total of 427 colonies were isolated from bovine colostrum on the BCP plate count agar. These LAB isolated were subcultured in 10% reconstituted skim milk, and seven strain thereof were selected for their highest acid productions, and two strain thereof were finally selected for their excellent sugar utilization. These strains were identified as Streptococcus thermophilus and Streptococcus macedonicus based on l6S rDNA sequencing data, named S. thermophilus CNB-11 and S. macedonicus CNB-11 respectively. For fermentation profiles, sugar utilization, acid production and viable cell counts were excellent in S. thermophilus CNB-11 as compared with S. macedoniclts CNB-11 after 48 hour. The effect of feeding fermented colostrum feed 0.5% using S. thermophilus CNB-11 was investigated for growth rate, analysis of blood and incidence of diarrhea. 24 heads of piglets were divided into two groups: the experimental and the control of 12 animals each. The average growth rate in the pigs fed fermented colostrum feed was higher 16.73% compared with control diet (p<0.05). There were no differences in the concentrations of blood glucose, cholesterol, albumin and globulin in pigs fed fermented colostrum feed as compared with control piglets. Incidence of diarrhea was no in pigs fed fermented colostrum feed as compared with control piglets.
Mo - V - Cu 다성분 혼합산화물 촉매상에서의 아크로레인 산화반응
나석은,박대원,정종식,최명재 ( Suk Eun Na,Dae Won Park,Jong Shik Chung,Myung Jae Choi ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.4
The vapor phase synthesis of acrylic acid from oxidation of acrolein was studied using Mo-V-Cu multicomponent mixed oxide catalysts. The effects of promoter, composition of active species and synergistic effect of mechanical mixture catalysts were investigated. The active phase for the formation of acrylic acid was vanadium molybdate with the composition of MoV₂O_8 and /or Mo_6V_9O_(40). Copper promoter increased conversion and yield of acrylic acid, but excess amount of copper on the surface decreased the yield of acrylic acid.
나석인,우민수,이종민,김명구 대한슬관절학회 2013 대한슬관절학회지 Vol.25 No.3
We introduce a new arthroscopic partial meniscectomy technique using a three portals and a small skin hook retractor to remove unstable inferior leaf in horizontal meniscal tear that involved the anterior portion of the lateral meniscus. The patient is positioned for a standard knee arthroscopy. After careful estimation of the depth and extent of the cleft and stability of the superior and inferior leaves is done through the standard anteromedial portal, a small skin hook retractor is inserted through the standard anterolateral portal to raise the dominant superior leaf of anterior horn, then the unstable inferior leaf is excised with a 90o rotary punch and a motorized shaver through the extreme far anteromedial portal. This technique is useful method to remove unstable inferior leaf of anterior horn of lateral meniscus which is difficult to remove with a standard technique.