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柳根燮,金洛根 慶北大學校 1984 農業科學技術硏究所報 Vol.1 No.-
熟田 뽕밭에서 石灰의 施用量이 뽕밭土壤의 化學性 및 뽕잎의 收量에 미치는 影響을 알기 爲해 10a當 消石灰 0, 100, 200, 300kg을 施用한 結果는 다음과 같다. 1. 石灰施用後 土壤의 칼슘含量은 全般的으로 增加하였으며 葉內의 칼슘含量도 石灰 施用量과 比例하여 增加하였다. 2. 土壤 pH는 石灰施用前에 5.6∼6.0 이었으나 石灰施用後에는 6.0∼6.4로 높아졌다. 따라서 염基飽和度도 pH와 같은 傾向으로 높아졌다. 3. 石灰를 施用하므로써 技條의 先端枯死를 어느程度 防除할 수 있었다. 4. 石灰의 施用은 뽕나무 오갈병의 發病率을 낮출 수 없었다. 5. 石灰를 施用하므로써 11∼13%의 收量이 增大되었다. The effect of lime application on the leaf yield in the mulberry field was investigated. Four levels of lime CaO 0, 100, 200, and 300Kg/10a was applied. The calcium quantity in the soil after lime application was increased, accordingly pH and degree of base saturation in the soil were increased. The winter injury of the top stems was decreased by the application of lime and the yield of muiberry leaves was increased by 11-13%, compared with those for the non-application of lime.
김낙근,조용,이계복 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.7
Numerical analysis on the flow induced vibration and flow characteristics in the water gate has been carried out by 2-dimensional unsteady CFD simulation when sea water flows into the port in the river. Effect of gate opening on the frequency and the mean velocity and the vortex shedding under the water gate were studied. The streamlines were compared for various gate openings. To get the frequency spectrum, Fourier transform should be performed. Spectral analysis of the excitation force signals permitted identification of the main characteristics of the interaction process. The results show that the sources of disturbed frequency are the vortex shedding from under the water gate. As the gate opening ratio increases, the predicted vibration frequency decreases. The bottom scouring occurs for large gate opening rather than smaller one. The unstable operation conditions can be estimated by using the CFD results and the Strouhal number results for various gate opening gaps.
김낙근(NK Kim),김동현(DH Kim),김영태(YT Kim),양영호(YH Yang),김재욱(JU Kim),박영년(YN Park) 대한산부인과학회 1997 Obstetrics & Gynecology Science Vol.40 No.7
Hydatidiform moles are generally separated into two clasifications. Complete hydatidiform moles are characterized by cystic swlling of all villi, often pronounced trophoblastic hyperplasia, lack of fetal parts, all 46 chromosomes of paternal origin(androgenesis), and a major risk for persistent trophoblastic tumor. Partial hydatidiform moles appear to be a milder version of complete moles with both normal and cystic villi, focal trophoblastic hyperplasia, a fetus or indications of previous fetal existence, 69 chromosomes with a maternal contribution, and a malignant potential less than described for complete moles. Hydatidiform mole with coexistent fetus is a very rare phenomenon, with an estimated incidence of 0.005 to 0.01 percent of all pregnancies. The rarity of live-born, surviving children may in part be due to termination of pregnancies, when molar parts are observed and without access to current advanced diagnostic procedures. Progress in techniques for first trimester prenatal diagnosis and improved surveillance of first trimester pregnancies through prenatal chromosomal analysis, ultrasound scan, maternal serum-hCG and serum- AFP screening has created complex situation, allowing confirmation of hydatidiform mole with coexisitng fetus. We recently experienced one case of unusual pregnancy with complete hydatidiform mole and coexisiting live fetus.