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반추가축의(反芻家畜) 사료섭취량 조절과 반추에(反芻) 관한 문헌적 고찰
배동호,육종륭 한국낙농학회 1981 韓國酪農學會誌 Vol.3 No.2
The subject is reviewed with respect to the regulatory of feed intake in the ruminants. The importance of physical and physiological or metabolic regulatory mechanisms are discussed in relation to their effects upon the formation of various metabolites known to be rebated to feeding. Also, reviewed the role of rumination as a physical regulatory mechanisms.
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Bactericidal Effects of CaO (Scallop-Shell Powder) on Foodborne Pathogenic Bacteria
배동호,연지혜,박신영,이동하,하상도 대한약학회 2006 Archives of Pharmacal Research Vol.29 No.4
This study was investigated the bactericidal effects of calcium oxide (CaO) on three common foodborne pathogenic bacteria: Escherichia coli, Listeria monocytogenes, and Salmonella typhimurium. Each bacteria level was determined in a CaO solution (0.01, 0.03, 0.05, 0.10, 0.15, and 0.20% [w/v]) exposed for either15 sec, 30 sec, 1 min, 2 min, 3 min, 5 min, 10 min, or 30 min. All three bacteria were not greatly affected by CaO solutions at concentrations of 0.01 and 0.03%, however, the decline of E. coli (99%; 2.78 log10CFU/mL), L. monocytogens (45%; 1.44 log10CFU/mL), and S. typhimurium (70%; 2.08 log10CFU/mL) was greatest when they were exposed to 0.05% CaO solution for 10 min. Moreover, the bactericidal action of CaO was maintained for at least 24 h of storage. The results of this study provide evidence that CaO, as a substitute for synthetic chemical substances has potential for use in the disinfection and sanitization of foods and food processing equipment.
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傾斜지게 결합된 spot 鎔接 箱型斷面部材의 應力과 變形解析 : 굽힘하중이 작용하는 경우 When Applied Bending Load
裵東鎬 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.1
In automobile frame work, thin walled box-sectional members are widely used. In such members, obliquely jointed ones can be often found. Exact solution of stress distribution and the strain for such members is very difficult owing to complicated strain at obliquely jointed part. However, the designer of automobile body structure must know the stress distribution and the strain on them for their more resonable design. In this report, an approximate estimation obtained by changing actual automobile frame of the obliquely jointed box-sectional member into simply simulated model for structural analysis is reported. Estimated models are three kinds of obliquely attached angles of 30˚, 45˚ and 60˚. Obtained results are as follow : 1) The axial stresses highly distribute between the box-beam and the I-beam and are influenced by the attached angle of the member. 2) The maximum axial stress of the flange is occurred at the fixed end of the short-flange, and its' value is nearly 2 times as much one of the long-flange. 3) According as the attached angle of the member increases, shear centre moves from the long-flange side to short-flange and deflection of the free end of the member decreases. 4) According as the attached angle of the member increases, the maximum principal stresses arround fixed end of the member decreases.
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