• Journal of Nutrition and Health
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• v.31 no.8
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• pp.1217-1225
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• 1998

This study was conducted to investigate the effects of shellfish on lipid metabolism in rats fed high fat supplements. Male sprague-dawley rats weighting approximately 165g were fed a basal diet, a high fat diet, or a high fat diet plus shellfish for 4 weeks. The shellfishes on the were oyster, hard-shelled mussel, little neck clam, and march clam. Alfter 4 weeks high fat diet, supplementation of 20% lard significantly increased plasma. GOT, GPT, ${\gamma}$-GTP , and liver triglyceride (TG). Plasma GOT, GPT, ${\gamma}$-GTP , triglyceride, and total cholestrerol levels were significantly lower in shellfish groups than in basal and high-fat groups regardless of high-fat supplementation (p<0.05). The total lipid and cholesterol content in liver showed similar results(p<0.05). There were no differences in glucose, HDL-cholesterol in plasma and total cholesterol and total lipid in liver between basal and high-fat supplemented diets. Liong chain fatty acids, specific components of shellfishes group, were exclusively higher than in basal and high-fat diets, and were most well-reflected in liver and plasma. From the above results, the hypolipidemic effects of shellfish were detected in the process of inducing hyperlipidemia by high-fat supplement.

• Steel and Composite Structures
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• v.14 no.2
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• pp.133-153
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• 2013

The concrete-filled steel tube (CFT) columns have several benefits of high load-bearing capacity, inherent ductility and toughness because of the confinement effect of the steel tube on concrete and the restraining effect of the concrete on local buckling of steel tube. However, the experimental research into the behavior of square CFT columns consisting of high-strength steel and high-strength concrete is limited. Six full scale CFT specimens were tested under flexural moment. The CFT columns consisted of high-strength steel tubes ($f_y$ = 325 MPa, 555 MPa, 900 MPa) and high-strength concrete ($f_{ck}$ = 80 MPa and 120 MPa). The ultimate capacity of high strength square CFT columns was compared with AISC-LRFD design code. Also, this study was focused on investigating the effect of high-strength materials on the structural behavior and the mathematical models of the steel tube and concrete. Nonlinear fiber element analyses were conducted based on the material model considering the cyclic bending behavior of high-strength CFT members. The results obtained from the numerical analyses were compared with the experimental results. It was found that the numerical analysis results agree well with the experimental results.

• Journal of the Korean Society of School Health
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• v.27 no.2
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• pp.109-120
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• 2014

Purpose: The purpose of this study was to identify the factors influencing emotional and behavioral characteristics of high school students. Methods: This was a descriptive survey using a convenience sample of 672. $1^{st}$, $2^{nd}$ and $3^{rd}$ grade high school students in Inchoen city. Emotional and behavioral characteristics were measured by AMPQ-II scale consisting of 38 items and depression was measured by BDI consisting of 21 items. The subjects were given a self-reporting questionnaire. Collected data were analyzed by frequency, mean, t-test, ANOVA, Scheff$\acute{e}$-test, ${\chi}^2$-test and multiple regression using the SPSS/WIN 20.0 program. Results: General high school students and vocational high school students were more likely to have emotional or behavior troubles, experience depression, and plan suicide than special-purpose high school students. Significant predictors influencing emotional and behavior characteristics were the 'type of high school' and 'depression'. Conclusion: There is a need to develop school-based mental health programs, especially targeting female students, general high school students and vocational high school students.

• Journal of the Korean Home Economics Association
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• v.27 no.2
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• pp.85-95
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• 1989

To examine closely the relations between food habits, food preferences and personality traits, 141 boys and 146 girls in the 5th and the 6th grade of primary school in Incheon were studied by questionaires. The results of this study were as follows: 1. In food habit scores, girls got 2.28/3.00 and boys got 2.24/3.00 which meant boys and girls had the similar food habits. 2. The higher were their activity, sociability, responsibility, reflectiveness, and superiority, the higher score they showed in food habits. 3. Meats, fats and processed foods had much to do with emotional stability, and those who belonged to high group in emotional stability high preference for them. But girls who had high preference for meats were low in emotional stability. 4. Fishes of which bones we can eat, and potatoes had relation to activity, and those who belonged to high group in activity showed high preference for them. 5. Vegetables and processed foods had relation to sociability. Those who belonged to high group in sociability showed high preference for vegetables, but those who belonged to middle group in sociability showed highest preference for processed foods. 6. Meats and potatoes had much to do with responsibility. Those who belonged to low group in responsibility showed high preference for them. 7. Those who belonged to the high group in emotional stability, and superiority showed the high preferene for foods respectively, and superiority showed the high preference for foods respectively.

• Journal of Fisheries and Marine Sciences Education
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• v.18 no.2
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• pp.183-193
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• 2006

The aim of this research is to present the fundamental data of the tangible school operation in order to get Specialized High Schools in Computer fixed firmly and developed. This project was made by analyzing and thorough investigations how teachers and students think of their school lives, curriculum, future guidances, and the pursuing directions of the school. And that is based on understanding Specialized High Schools distinguished from the traditional Business High Schools. In order to develop the Specialized High School Related Computer as the model of the Specialized High School in Korea, it is important that the government trains the teachers who give students satisfactions. Also for the prospective future of the Specialized High School Related Computer, it is necessary that a good curriculum are developed in detail and the superior students are accepted in their entrance. Also, the students brought by the good teachers will contribute to Korean computer industries. So then, the Specialized High School Related Computer will be dispersed as training computer talents.

• Proceedings of the Korean Vacuum Society Conference
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• 2014.02a
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• pp.292-292
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• 2014

Wide band gap semiconductors, such as III-nitrides (GaN, AlN, InN, and their alloys), SiC, and diamond are expected to play an important role in the next-generation electronic devices. Specifically, GaN-based high electron mobility transistors (HEMTs) have been targeted for high power, high frequency, and high temperature operation electronic devices for mobile communication systems, radars, and power electronics because of their high critical breakdown fields, high saturation velocities, and high thermal conductivities. For the stable operation, high power, high frequency and high breakdown voltage and high current density, the fabrication methods have to be optimized with considerable attention. In this study, low ohmic contact resistance and smooth surface morphology to AlGaN/GaN on 2 inch c-plane sapphire substrate has been obtained with stepwise annealing at three different temperatures. The metallization was performed under deposition of a composite metal layer of Ti/Al/Ni/Au with thickness. After multi-layer metal stacking, rapid thermal annealing (RTA) process was applied with stepwise annealing temperature program profile. As results, we obtained a minimum specific contact resistance of $1.6{\times}10^{-7}{\Omega}cm2$.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.14 no.10
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• pp.999-1006
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• 2004

Recently, the ride comfort problem becomes increasingly important because of today's needs for train speedup. The railway has the track irregularities which cause vibrations, such as rail joints, turnout, level crossing, transition corves and super-elevation ramps, and variations in the track level(z-axis) and the gauge(y-axis). In Korea, the service run of the high speed train has been made since the 1st of April, 2004. The commercial high-speed trains must be run on the compound lines which are composed of high-speed line and conventional line. The high speed lines in both Kyoungbu line and Honam line have 57.5％ and 33.8％, respectively In this Paper, the ride comfort has been reviewed by the various experimental methods when the high-speed trains are operated on both Kyoungbu line and Honam line. The results show that the high-speed train has no problems from the viewpoint of the comfort ride during the operation on the high speed line and conventional line.

• Journal of the Korea Institute of Building Construction
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• v.13 no.1
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• pp.58-65
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• 2013

Currently, many high-rise buildings are built in Korea for land-efficient utilization and vista. In high-rise buildings this tall, the use of high-strength concrete is essential to reduce the cross-section of structure members and secure axial load. However, this high strength concrete is vulnerable to spalling by fire, due to the water vapor pressure caused by the very high temperature in fire. To prevent this, the main method used is to reinforce the concrete with fiber. However, there has been little research on the pumpability of fiber reinforced high strength concrete. For this reason, this study features a performance review based on the properties and pumpability of fiber reinforced high strength concrete. In addition, the parameter of rheology was measured by extracting mortar from the concrete, and friction factor was measured through a 400 m horizontal pipe pumping test using the fiber reinforced high strength concrete. The basic information on fiber reinforced high strength concrete that we obtain through the experiments and review will contribute to the field.

• Korean Journal of Acupuncture
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• v.22 no.2
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• pp.151-161
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• 2005

Objectives : In order to measure the Effects of taeeumjoweetang Herbal- Acupuncture at joksamri(ST36) and kwanweun(CV4) on liver and plasma lipid composition and antioxidative capacity in rat fed high fat diet. Results : Concentrations of plasma triglyceride, total cholesterol and LDL-cholesterol showed a tendency to increase in the high fat diet group. However Herbal-Acupuncture groups showed a lower values than control groups. HDL-cholesterol showed a tendensy to decrease in high 131 fat diet groups and in high fat diet groups, these values showed no significantly different. Liver total cholesterol values showed no significantly different in all treatment groups. Triglyceride concentration showed a high value in control group and other treatment groups showed no significantly different. plasma GOT and GPT values showed a tendency to increase in high fat diet group. however these values decreased in Herbal-Acupuncture group. The concentration of TBARS in liver and plasma showed a high values in high fat diet group, however these values showed a tendency to decrease in aqua- acupuncture group. Glutathione peroxidase, superoxide dismutase and catalase activity values showed a low values in high fat diet group, however these values showed a tendency to increase in Herbal-Acupuncture group.

• Journal of the Korea Society of Computer and Information
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• v.22 no.1
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• pp.71-76
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• 2017

Recently, there are various researches using inaudible high frequencies like as wireless communication based smart devices, data transmission algorithm, indoor positioning trace technologies. However, when they use high frequencies of inaudible range, they have a problem that the accuracy of data transmission with high frequencies was low because of interference from ambient noise in our real life. To solve this problem, in this paper, we proposed an application based on smart phone and server system for collection of ambient noise and detection of robust high frequency range. The server system could detect the robust high frequency range from statistical analysis of collected noise and the robust high frequency could avoid interference from ambient noise. We tested the proposed application's ability to gather noise and high frequencies for a certain period of time to evaluate performance. According to the testing results, we confirmed that the proposed application and server system could detect a robust high-frequency range via noise analysis in real life. Therefore, the proposed application and server could be a useful technology for future research on inaudible high frequencies.