• The Journal of the Korea Contents Association
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• v.9 no.10
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• pp.427-435
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• 2009

The aim of this study was to examine the effect of a brisk walking intervention for 8weeks on isokinetic muscular function factor(strength, power, endurance). The following results were found from the current study: First, Isokinetic muscle function(strength, power, endurance) on $60^{\circ}/sec$ in extension and flexion was significant exercise group and interaction in left knee flexion and right knee extension(P<.00l). Secondly, Isokinetic muscle function(strength, power, endurance) on $120^{\circ}/sec$ in extension and flexion was significant exercise group and interaction in left knee flexion and right knee extension(P<.001). Thirdly, Isokinetic muscle function(strength, power, endurance) on $180^{\circ}/sec$ in extension and flexion was significant exercise group and interaction in left knee flexion and right knee extension(P<.001). Considering the above result of the study the brisk walking had more improvement knee flexor and extensor muscular power. Therefore the brisk walking in the study can be proposed as effective plan to prevention hurt from a sarcopenia and to raise quality in life.

• Journal of Food Hygiene and Safety
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• v.36 no.4
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• pp.347-352
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• 2021

Yam (Dioscorea japonica) is widely utilized as food and a pharmaceutical ingredient as it contains a variety of valuable constituents. Allantoin is one of the bioactive components in yam that is used in pharmaceutical and cosmetic industry. This study was conducted to analyze and compare the allantoin content of yam flesh and peel by HPLC analytical method using an amino bonded-phase column to make up for the limitations of the previous HPLC analytical methods. The allantoin contents of yam flesh and peel were 3.09±0.025 and 3.91±0.11 mg/g (dry weight), respectively. The results of this study indicated that yam peel has higher allantoin content than yam flesh, and that the discarded yam peel could be used as a source for high value-added functional materials.

• Korean Journal of Agricultural Science
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• v.25 no.1
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• pp.124-130
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• 1998

An alkalophilic bacterium, the strain AC-711 as a potent producer of alkaline cellulase, was selected among many isolates from soil environments. Morphological, physiological and chemical characteristics of the strain AC-711 suggested that it belongs to the genus Pseudomonas according to the Bergey's Manual of Systematic Bacteriology, however the G+C mol% (54.43) of its chromosomal DNA is lower than the normal values of the genus. The major cell wall fatty acids were determined as 15:0 and 17:0 anteiso. The production of alkaline CMCase by the strain was maximal when grown on the mediun containing 1% carboxymethyl cellulose, 0.1% $KH_2PO_4$, 0.02% $CoCl_2$, 0.02% Tween 80, 0.5% $Na_2CO_3$, 0.8% yeast extract, pH 10.3 at $30^{\circ}C$ for 3 days, and the most of enzyme was excreted into culture mediun.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.15 no.2
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• pp.281-291
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• 2002

This paper describes the minimum cost design of prestressed reinforced concrete (PRC) hem with rectangular section. The cost of construction as objective function which includes the costs of concrete, prestressing steel, non prestressing steel, and formwork is minimized. The design constraints include limits on the minimum deflection, flexural and shear strengths, in addition to ductility requirements, and upper-Lower bounds on design variables as stipulated by the specification. The optimization is carried out using the methods based on discretized continuum-type optimality criteria(DCOC). Based on Kuhn-Tucker necessary conditions, the optimality criteria are explicitly derived in terms of the design variables - effective depth, eccentricity of prestressing steel and non prestressing steel ratio. The prestressing profile is prescribed by parabolic functions. In this paper the effective depth is considered to be freely-varying and one uniform for the entire multispan beam respectively. Also the maximum eccentricity of prestressing force is considered in every span. In order to show the applicability and efficiency of the derived algorithm, several numerical examples of PRC continuous beams are solved.

• Korean Journal of Remote Sensing
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• v.24 no.4
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• pp.325-331
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• 2008

We propose an algorithm to detect large Cochlodinium polykrikoides red tide event that was appeared in Korean coastal waters. This algorithm is based on two-stage filtering using MODIS chlorophyll information. Most of the red tide detection studies generally use assumption that sea water having high chlorophyll concentration is red tide events because of high correlation and red tide. However, these methods generate many commission errors such as turbid water by detecting inactive sea water of red tide. Therefore, we eliminated commission errors by applying two stage filtering and verified the algorithm's effectiveness by detecting large Cochlodinium polykrikoides red tide event that was appeared in Korean coastal waters.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.3
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• pp.559-572
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• 2019

In the southeast sea of Korea, the cold water is concentrated in every summer, showing in abnormal oceanic conditions. Cold water occurred in the southeast sea is dominantly influenced by wind, which occurs when the south wind is continuously blowing for 3 to 7 days more. In this study, water temperature, wind speed and direction data of KMA, KHOA and KHNP, Chlorophyll-a of COMS/GOCI, GHRSST Level 4 SST of NASA, and red tide alert data of the National Institute of Fisheries Science were used to analyze the correlation between occurrence and change of the cold water and the red tide of Cochlodinium polykrikoides. The upwelling cold water mass showed a characteristic of moving northward along the current and occurrence a high concentration of chlorophyll along the water mass. Also, when the warm current were strong, the characteristic of red tide showed a northward moving.

• Transactions of the Korean Society of Mechanical Engineers
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• v.9 no.5
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• pp.627-637
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• 1985

The combustion process and the performance of a diesel engine are seriously affected by the ignition delay period of the fuel used. Some methods for improving the combustion process in the engine cylinder are to well match the strength of air swirl with the space of sprays in the cylinder, to blend an ignition improver in the fuel, to inject a small amount of auxiliary fuel prior to main injection and so on. Recently, the improvement of fuel economy and the reduction of exhaust smoke and NO have been successfully achieved by supplying diesel engines with emulsified fuel. However, it is very difficult to know real combustion mechanism under such special conditions, because of many factors affecting on the combustion process in practical reciprocating engine. In the present paper, the combustion processes of diesel fuel and emulsion fuel were tried to improve and to observe by making contact with various lean pre-mixtures in the hot air stream duct. This hot air stream method has an advantage that the spontaneous combustion process can be observed under a simplified condition.

• Journal of Veterinary Clinics
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• v.31 no.5
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• pp.461-465
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• 2014

A 3-year-old colt Thoroughbred horse was referred with obvious lameness (3/5G) and mild heat and pain on left hoof of forelimb. He was diagnosed with quarter cracks that have a typical conformation of sheared heel, which are a different length and height between medial/lateral heels. Various materials and techniques were carried out to repair quarter cracks by using many different kinds of clips, bar shoes on fifth times for about 10 months. It worked on him without pain and heat on the cracked hoof, and then he could retrain for racing from the 36th weeks beginning of therapeutic shoeing. We suggested that especially fiberglass reinforced plastic (FRP) material and therapeutic shoeing were a great help to treat quarter cracks induced by sheared heel.

• Journal of Environmental Science International
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• v.11 no.10
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• pp.1011-1021
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• 2002

Fruit-discharge type of forty species of Asian Geranium were examined and their evolutionary trends and taxonomic system were discussed. Two main types of seed discharge in Geranium are made the basis of its divison into subgenera: Geranium subgenus Geranium, with a ballistic expulsion of the seed from mericarp, Geranium subgenus Robertium, with forcible discharge of the mericarp with the seed in it, separately from the awn. Variants of the seed ejecting type permit the division of Geranium subgenus Geranium into three sections. Section Ceranium, these has bristles at the base of the mericarp for prevent the seed from dropping from the divergent mericarp. Section Dissect, these has prongs at the base of the mericarp far prevent the seed from dropping from the divergent mericarp. Section Tuberosa, these has no bristles and prongs at the base of the mericarp, instead, retained of seed in pre-explosive interval by twist. Geranium subgenus Robertium was divided into two sections, Section Ruberta, with deeply wrinkled on the surface of mericarp at the time of discharge. Section Batrachioides, and section Trilopha, without wrinkle on the surface of mericarp at the time of discharge. According to the seed discharge, subgenus Geranium is thought to be more advanced than subgenus Robertium.

• The Journal of the Korea Contents Association
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• v.12 no.10
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• pp.159-168
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• 2012

Freedom of speech is indispensable in Democracy. It is a rink among government agencies. Mass media as institutionalized means which forms public opinion impacts quite a few to a society. Mass media as a life media in our daily lives has characteristics of speed and prompt report. It is difficult to measure the effect on a society. Mass media is a lifeline in democracy because it has freedom of opinion for seeing, listening, speaking, and criticizing about the people's right to know in an information society. Our Constitution also guarantees freedom of the press, information(peoples's right to know), report, the collection of news, and edition. Because an unnecessary thing about a privacy is reported by mass media, it can violate defamation. This study seeks to be unbiased in reporting and what the principles of the Constitution for minimizing an invasion of a person's privacy is. This study also seeks freedom of speech and the right to know. In case that a personal honor is invaded by a mass media and a publication, this study provides the Constitution basis, Criminal Law basis, and Civic Law basis for remedy violation. A report for apology on newspaper and by television was widely used as "a proper punishment for honor recovery in the past". The constitutional court had decided that including the report of apology for "a proper punishment of honor recovery" in the article 764 of the Civic Law as a reason of freedom of conscience and the violation of personal rights was against the Constitution. Therefore, this study examples what is a legal remedy in practical?, where is legal basis of special remedy in the Civic Law, and what is a method by the Press Arbitration Law compared with the examples of other countries. On the other hand, because a mass media may injure a person's honor and infringe a person's privacy, if the report is categorized as a malicious press, the true role which mass media has to do may not demonstrated. In conclusion, this study was to minimalize infringement of mass media to a person and to seek a realistic alternative of a legal remedy.