• Food Science of Animal Resources
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• v.31 no.2
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• pp.304-310
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• 2011

In this study, new dduk-galbi was developed by adding ripened Korean cabbage kimchi made with solar salt. Dduck-galbi was selected by pre-estimation for main dish to add the ripened Korean cabbage kimchi. To solve the bad smell of ripened Korean cabbage kimchi and enhance the function of the food, herb was added. The preference of the herb to kimchi was determined by sensory evaluation. The preference was in the order of rosemary > lemon balm > thyme. Sensory evaluation was adopted to determine optimal contents of ripened Korean cabage kimchi. The result showed that 10 % was best for beef dduck-galbi and 20 % for pork dduck-galbi.

• Journal of the Korea institute for structural maintenance and inspection
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• v.18 no.3
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• pp.28-39
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• 2014

This paper reviews past literatures relevant to fire-resistance properties of high strength concrete and investigates spalling mechanism of high strength concrete in fire. First, literatures were reviewed on spalling occurrence and fire-resistance methods. Second, a chemical change of concrete components in an elevated temperature was presented. Finally, the mechanism of the spalling occurrence and spalling resistance were examined in terms of hybrid fiber content. The focus of the experimental study as part of this research is to investigate the effects of fire on the variation of thermal properties of high strength concrete, which tends to be used in super tall buildings. This experimental study was devised to investigate the fire-resistance performance of high strength concrete containing hybrid fibers. A total of 48 test specimens were exposed to high temperature ranging from $100^{\circ}C$ to $700^{\circ}C$, including room temperature (${\sim}20^{\circ}C$). Test results provide valuable information regarding fire-resistance properties of strength concrete with 100 MPa or greater.

• The Korean Journal of Zoology
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• v.33 no.3
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• pp.365-372
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• 1990

For the effort to produce transgenic amphibians, a plasmid DNA sequence (cytoplasmic actin promoter-linked bacterial $\beta$-galactosidase gene) was microinjected into fertilized Xenopus eggs. It appeared that the injection of 20 nl solution containing 1-2 ng of DNA was not toxic, but over 4 ng was toxic to embryonic development. The translational product of $\beta$-gal gene ($\beta$-galactosidase) had enzyme activity in all three germ layers of the embryo. Expression of the injected $\beta$-gal genes was first detected at mid-gastrula stage, and the activity persisted up to stage 43 (feeding tadpole) with decreased level of retention. However, the level of the expression was various among the injected individuals as well as each experiment. That is, $\beta$-galactosidase activities did not appear in all cells, instead a localized distribution pattern. Although other possibilities could not be omitted, this mosaic distribution of gene expression seemed to arise from unequal partition of the injected DNA into each blastomere during early cleavage.

• The Korean Journal of Zoology
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• v.31 no.1
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• pp.29-34
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• 1988

In order to investigate the role of nuclei and cytoplasm in early embryogenesis, interspecific nuclear transplantation was carried out Nuclei of one species of amphibian was transplanted into enucleated egg of another species. In interspecific hybrids between Rana species, development was arrested before or right after the dorsal lip formation. In intergenetic hybrids between Rana, Xenopus and axolod, developmental arrest took place at late blastula stage. Comparing the developmental capacity of each nudeocytoplasmic hybrid, the more distantly related the species, the earlier does development arrest. The general rule is that nuclear transfers between any amphibian species will form a regulary cleaved late blastula. Two plausible factors relate to limitation of tite developmental capacity of nudeocytaplasmic hybrids. One is an irreversible change in grafted nuclei and another is tunctional incompatibility between the recipient cytoplasm and transplanted nucleus. The later is postulated a more possible cause of the arrestrnent.

• Food Science and Preservation
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• v.19 no.2
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• pp.209-215
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• 2012

A new recipe for $mandu$ was developed by adding ripened Korean cabbage $kimchi$. To counter the bad smell of ripened $kimchi$ and to enhance the function of the food, rosemary was added to it. The preference for the herb over $kimchi$ was determined via a sensory evaluation. The preference was in the following order from highest to lowest: rosemary, lemon balm, and thyme. Ripened Korean cabbage $kimchi$ was added to beef or pork stuffing for $mandu$. Sensory evaluation was used to determine the optimal contents of ripened Korean cabbage $kimchi$. The result showed that 75% of the $kimchi$ content was best for beef $mandu$ and 100% for pork $mandu$.

• Journal of the Korea institute for structural maintenance and inspection
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• v.9 no.1
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• pp.271-281
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• 2005

The effects of radiation damping is used to compensate the truncated boundary which is relatively close to the structure-fluid interface in the fluid element surrounding the submerged structures. An efficient ring element is presented to model the shell and fluid element which fully utilizes the characteristics of the axisymmetry. The computational model uses the technique which separate the meridional shape and circumferential wave mode and gets similar result with the exact solution in the eigenvalues and the earthquake analysis. The fluid-structure interaction techniques is developed in the finite element analysis of two dimensional problems using the relations between pressure, nodal unknown acceleration and added mass assuming the fluid to be invicid, incompressible and irrotational. The effectiveness and efficiency of the technique is demonstrated by analyzing the free vibration and seismic analysis using the added mass matrix considering the structural deformation effect.

• YAKHAK HOEJI
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• v.42 no.5
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• pp.527-533
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• 1998

6-(3,4-Dichlorophenyl)amino-7-chloro-5,8-quinolinedione (RCK50) was tested for antifungal activities in mice systemically infected with Candida albicans. The therapeutic potential of RCK50 was also assessed in comparison with ketoconazole. CK50 had $ED_{50}$ 0.22${\pm}$0.01mg/kg. Ketoconazole as a positive control had $ED_{50}$ 6.00${\pm}$1.70mg/kg. Intraperitoneally administered RCK50 at the $ED_{50}$ for 7 days and 14 days reduced Candida albicans colony count in the kidneys and liver. And administered RCK50 at the $ED_{50}$ for 14 days improved survival rates. The genotoxicities of RCK50 had been evaluated. RCK50 was negative in Ames test with Salmonella typhimurium and chromosomal aberration test in CHL cells. RCK50 did not show any clastogenic effect in mouse peripheral blood and was negative in mouse micronucleus assay. These results indicate that RCK50 has no genotoxic potential under these experimental conditions. Acute oral toxicity studies of RCK50 were carried out in ICR mice of both sexes. RCK50 did not show acute oral toxicities and $LD_{50}$ values were over 2,850mg/kg in ICR mice.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.46 no.2
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• pp.78-88
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• 2009

In many face recognition problems, the number of available images is limited compared to the dimension of the input space which is usually equal to the number of pixels. This problem is called as the 'small sample size' problem and regularization methods are typically used to solve this problem in feature extraction methods such as LDA. By using regularization methods, the modified within class matrix becomes nonsingu1ar and LDA can be performed in its original form. However, in the process of adding a scaled version of the identity matrix to the original within scatter matrix, the scale factor should be set heuristically and the performance of the recognition system depends on highly the value of the scalar factor. By using the proposed resampling method, we can generate a set of images similar to but slightly different from the original image. With the increased number of images, the small sample size problem is alleviated and the classification performance increases. Unlike regularization method, the resampling method does not suffer from the heuristic setting of the parameter producing better performance.

• Korean Journal of Occupational Health Nursing
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• v.23 no.2
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• pp.97-105
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• 2014

Purpose: The purpose of this study was to identify the link between health-related physical fitness level and cardiovascular disease-related risk factors in adult male workers. Methods: We tested cardiovascular disease-related risk factors (waist circumference, SBP, DPB, fasting glucose, TC, HDL-C, TG, LDL-C) and health-related physical fitness ($VO_2max$, grip, Sit-up, Flexibility, Body fat) and divided health-related physical fitness level of the subjects into 3 groups - A (very good, n=56), B (good, n=59), and C (below-average, n=57) according to the criterion of the Health and Fitness counseling guidelines of KOSHA. The statistical techniques such as standard deviation, one-way ANOVA and multiple regression (p<.05) were used. Results: There were significant differences between group C and group B & A (p<.001) in waist circumference, DBP, Fasting glucose, HDL-C, TG, LDL-C. In TC/HDL-C, TG/HDL-C, LDL-C/HDL-C, Group C was higher than group B and A. Conclusion: On the basis of these results, we identified that improvement of health-related physical fitness level positively effects on the decrease of cardiovascular disease-related risk factors.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.15 no.3
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• pp.389-398
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• 2002

The mixed mode problem (I and II) of a peny-shaped interface cracks in remote tension loading on a bi-material cylinder is studied using finite element method. The energy release rates for the tip of the crack in the interface were calibrated for several different moduli combinations and crack ratios using the modified crack closure integral technique and J-integral method, with numerical results obtained from a commercial finite element program. Numerical results show that non-dimensional value of$\sqrt{G_{II}E^*}/\sqrt[p]{\pi a}$ increases as the crack size or moduli ratio increases. Meanwhile, non-dimensional value of$\sqrt{G_{I}E^*}/\sqrt[p]{\pi a}$ decreases as the moduli ratio increases, but above the moduli ratio of 3 its value decreases then increases again as the crack size increases. Reliability of the numerical analysis in this study was acquired with comparison to an analytical solution for the peny-shaped interface crack in an infinite medium.