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질소 시용수준과 관수가 사과 과실의 칼슘함량에 미치는 영향
최종승,최종명,Choi, Jong-Seung,Choi, Jong-Myung 배재대학교 자연과학연구소 1999 自然科學論文集 Vol.11 No.1
사과 스타크림손품종에 질소시용량을 달리하였을 때 질소 다량 시용구가 표준 시용구보다 과실의 칼슘함량이 적었다. 칼슘용액의 수관살포로 과실 칼슘함량이 증가되었고 반점성 생리장해발생이 감소되었는데 특히 질소표준구에서 칼슘함량 증가가 뚜렷하였다. 사양토에 재식된 후지품종에 대한 관수는 과실의 비대와 잎과 과실의 칼슘함량을 증가시키는 효과가 있었다. Treatments with increased amount of nitrogen fertilizer had less calcium content than those of conventional fertilization in 'Starkrimson' apple fruits. When $CaCl_2$ solution was applied as tree spray, treatment of conventional fertilization had increased fruit calcium content and decreased occurrence of spotted disorders. Better in increasing fruit calcium content was secured in treatment of conventional nirtogen fertilization. The irrigation effect to sandy loam soil where 'Fuji' apple fruits were planted were observed in fruit enlargement and increase of calcium content in leaves and fruits.
칼슘급원별 수관살포가 사과 과실의 칼슘축적에 미치는 영향
최종승,Choe, Jong-Seung 배재대학교 자연과학연구소 1993 自然科學論文集 Vol.6 No.1
사과나무에 대한 칼슘용액의 수관살포 시 칼슘염의 종류에 따른 과실 내 칼슘함량증가효과를 구명하고 자 본 연구를 수행하였다. $CaCl_2$, $CaCO_3$, Ca$(CH_3COO)_2$ 및 Ca$(NO_3)_2$ 등의 칼슘염을 수관살포한 결과 "쓰가루" 품종에는 Ca$(NO_3)_2$, $CaCl_2$ 및 $CaCO_3$, 그리고 "후지" 품종에는 $CaCl_2$와 $CaCO_3$가 과실의 칼슘함량증가에 효과적이었다. 수관살포에 의하여 과실로 흡수된 칼슘은 과피와 과피직하의 과육에 국한되었다. Ca$(CH_3COO)_2$를 살포한 과실은 저장 중에 에틸렌 발생량이 감소하는 경향이었다. This study was conducted to investigate the influence of various calcium salts on the accumulation of calcium in apple fruits when sprayed on whole tree. Differences in the total calcium contents of fruits were found between calcium sources and cultivars. In 'Tsugaru' , calcium nitrate, calcium chloride, and calcium carbonate were all effective but only calcium chloride and calcium carbonate appeared to be effective in 'Fuji' . Major parts of the applied calcium were accumulated in the feel and outer flesh. Ethylene evolution of fruit was retarded during storage with the increase of total calcium content in 'Fuji' fruit treated calcium acetate.
광양제철소 산소공장 위험특성 도출 및 중요도에 근거한 향상 안 제시
최종승,김영수,김연종,박진섭,Choe, Jong-Seung,Kim, Yeong-Su,Kim, Yeon-Jong,Park, Jin-Seop 한국시스템엔지니어링협회 2003 시스템엔지니어링워크숍 Vol.1 No.-
The air separation plants in the POSCO's Gwangyang Steel Works require high standard on quality as well as reliability as they have to continuously supply essential utility gases as oxygen, nitrogen and argon. And the plants are in the category of high pressure gas systems by the regulatory guidelines, which signifies that they have to maintain utmost level of safety. As an effort to systematically understand and calculate the risk potentials in the air separation plants, risk assessments have been performed on a phased approach: qualitative and followed by quantitative POSCO has chosen to use hazard and operability study and fault tree analysis to satisfy the requirement. As a result, the risk assessment team has identified number of safety and operability related findings. With importance of each and ever findings calculated, a priority list for what/when to do for them could have been presented on a balance fashion.
배 장십랑품종의 저장 전 $CaCl_2$처리에 따른 과실 칼슘함량과 과실특성의 변화
최종승,이주연,Choi, Jong-Seung,Lee, Ju-Youn 배재대학교 자연과학연구소 1998 自然科學論文集 Vol.10 No.1
장십랑 배를 수확한 후에 $CaCl_2$에 침지 또는 감압침지하므로 과실의 칼슘함량이 증가되었다. 특히 과피와 과피직하 과육의 칼슘증가량이 많았다. 단순침지의 경우 $CaCl_2$의 농도가 2%에서 8%까지 높아질수록 과실의 칼슘함량이 증가되어 효과적이었고, 감압침지의 경우 200-600mmHg의 감압범위에서는 차이가 없었으며, 단순 침지와 감압침지 간에도 차이를 인정할 수 없었다. 처리 4주 후의 과실경도의 저하는 $CaCl_2$ 처리로 칼슘함량이 증가된 과실에서 둔화되었다. Postharvest dipping of vacuum infiltration treatments of 'Chojuro' pear fruit in $CaCl_2$ resulted in increased calcium content, especially in fruit peel and outer flesh such as just below peel. As $CaCl_2$ concentrations increaced from 2% to 8% in dipping treatment, calcium content became higher. But vacuum infiltration under 200-600 mmHg did not affect and dipping and vaccum infiltration did not have any difference in fruit calcium content. Decreasing of fruit firmness determined at 4 weeks during storage was slower in fruits with $CaCl_2$ treatment than control.
최종승,Choi, Jong-Seung 배재대학교 자연과학연구소 2007 自然科學論文集 Vol.18 No.1
칼슘용액을 사과나무에 살포하였을 때 과실로 칼슘이 축적되는 양상을 구명하기 위하여 본 연구를 수행하였다. 과실 발육 전반기보다 후반기에 칼슘용액을 처리하는 것이 과실의 칼슘함량 증가 효과가 높았다. 과실 주위의 잎 표면에 처리된 칼슘은 과실로 거의 전류되지 않았으나 과경에는 일부 축적되었으며 과실 표면에 처리하였을 때 과실의 칼슘함량이 증가되었다. This research was conducted to investigate the effects of calcium solution spray on the accumulation of calcium into apple fruit. $^{45}_{CaCl_2}$ applied to fruit with different growth stages showed that more $^{45}Ca$ was penetrated into fruits when applied in the late stage than early stage. Slight radioactivity was detected only in pedicel except leaf when $^{45}Ca$ was treated on the leaves proximate to the fruit. When the Ca was treated on fruit surface only, calcium contents of fruit was increased.