• Korean Journal of Weed Science
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• v.10 no.4
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• pp.255-260
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• 1990

Seventeen different herbicides were screened to select promising ones for the control of weeds, which may be used in paddy fields transplanted with 8 days old young rice seedlings. Four classes of herbicides were chosen and tested with seedlings grown under different cultivating conditions. Contact herbicides such as diphenyl-ether and oxadiazol showed severe growth retardation of rice seedlings. Carbamate class(dimepiperate), quinoline class (quinclorac), pyrazol class(pyrazolate), acid amide class(mefenacet and pretilachlor), addition of safener (pretilachlor+fenclorim and mefenacet+bensulfuron+dymuron) and unknown class (KC-7079) exhibited normal growth of seedlings. Sulfonyl urea herbicide class(cimosulfuron, bensulfuron, pyrazosulfuron), and oxarane class(tridiphane) showed the slight growth inhibition but recovered shortly.

• Korean Journal of Food Science and Technology
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• v.28 no.2
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• pp.240-245
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• 1996

Soybean sprouts(Paektae chunjari variety) cultivated for 5 days at a high temperature and humidity condition placed in the position of either upside down (method 1) or up right (method 2) were compared with the sprouts grown for 9 days with the conventional method (method 3) with respect to appearance, yield, rotten rate and organoleptic quality. The method 1 sprouts cultivated at a high temperature and humidity by sprinkling underground water (controlled temperature $17^{\circ}C$) 8 times a day were not significantly different in yield, rotten rate and moisture content from the method 2 sprouts except the lighter individual weights. The total weight yield of method 1 sprouts ($699{\pm}8.14%$699±8.14%) was lower than that of the method 3 sprouts ($771{\pm}11.8%$) but there was no significant difference in rotten rate ($0.83{\pm}0.07$). The organoleptic quality of the method 1 sprouts were superior in colour, flavor and overall taste than the method 3 sprouts.

• Resources Recycling
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• v.21 no.2
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• pp.17-33
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• 2012

In order to review the recent technological progress and issues on the urban mine resources recycling in Japan and Korea, recycling process of the ELV(End of Life Vehicles) and E-waste(WEEE) were studied. Although technological level for processing of the ELV and E-waste is almost similar in both countries, the treatment of hazadous materials of ELV such as freon, air bag and ASR is unsufficient in Korea. In the E-waste recycling, the technological level is deeply different according to the enterprise size in Korea. Finally, the big R&D project on recycling of urban mine resources sponsored by government in both countries were discussed.

• Development and Reproduction
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• v.7 no.1
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• pp.9-13
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• 2003

A series of experiments were conducted to compare the effects of various diluents in cold storage on the sea urchin, Hemicentrotus pulcherimus sperm. Various diluents of glucose solutions, artificial sea water(ASW) and 50% ASW were used to store the sperm at 4$^{\circ}C$. The storage effect was evaluated using sperm activity index(SAI), survival rate of sperm and fertilization rate to egg. ASW and 1.2 M glucose were found to be better diluents which maintained high motility and survival rate of sperm f3r a storage period of 30 days. Optimal pH of diluent to store the sperm at 4$^{\circ}C$ is 7.0∼8.0. In order to keep high SAI and survival rate of sperm, addition of 400 ppm neomycin into the diluent revealed the best storage results.

• Current Research on Agriculture and Life Sciences
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• v.10
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• pp.53-65
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• 1992

The purposes of this study are to examine the structural differences between the agriculture of Korea and Japan, to clarify the characteristics of Korean agriculture and to determine the extent of development of agriculture in Korea as compared to Japan, In order to do this, the existing literature research reports and secondary data of both countries were used. The main findings are as follows : 1) The percentages of upland fields have inclined to increase in Japan, while those of paddy fields have increased in Korea. However, the size of cultivated land per farm is about the same. 2) The percentage of part-time household was 85% in Japan, against 22% in Korea. 3) Farm household income was more than non-farm household income in Japan, wherease : 92% was non-farm household income in Korea. 4) The farm mechanization is more advanced in Japan than Korea. In conclusion, Korea legs behind Japan in the following areas: (1) Farm mechanization (2) the structure of food consumption ; (3) industrialization and urbanization in Korea progressed more rapidly as compared with Japan ; (4) industry became overconcentrated in the Seoul metropolitan area.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.10 no.1
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• pp.61-64
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• 1977

Fluoride analysis using fluoride specific ion electrode has been carried out from sea water samples at 15 stations in the west coast of Korea. The concentration was varied from 0.83 to 1.00 ppm; ratio to chlorinity ranged from 4.60 to $5.48\times10^{-5}$. There was a tendency that the ratio to chlorinity was increased with the depth. In general the concentration was less than that of other seas.

• Journal of the Korean Society for information Management
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• v.23 no.4 s.62
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• pp.179-196
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• 2006

This study proposes an expanded model of personalized search service based on community activities on a Korean Web portal. The model is composed of defining subject categories of users, providing personalized search results, and recommending additional subject categories and queries. Several experiments were performed to verify the feasibility and effectiveness of the proposed model. It was found that users' activities on community services provide valuable data for identifying their Interests, and the personalized search service increases users' satisfaction.

• Journal of Korean Public Health Nursing
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• v.14 no.2
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• pp.372-381
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• 2000

This study was carried out to compare influential life-style factors between Korean and Japanese women. with a view to providing basic data needed in the community nursing activities for the health promotion of women, The questionnaire survey was conducted between Jan 1 and April 15. 2000 on 64 Korean and 63 Japanese women who committed the care of their child to a day-care center because they had to go to work. The obtained results are as follows. 1. On the whole. there was little difference in the score of life-style factors between Korea and Japan. The areas in which Japanese women got a higher score were personal relationship and nutrition, and Korean women got a higher score in the area of self-realization. 2. Both in Korea and Japan. the degree of satisfaction with family life proved to be the most influential factor on the life-styles for the health promotion of women. This implies that the level of their practicing life styles for the health promotion becomes higher in proportion to the degree of satisfaction with their family life. In conclusion. considering the fact that the proportion of women workers has been on the increase in Korea. heath promotion services for women need to be treated more importantly, with the focus on the interpersonal relationship not only in family but also in work sites.

• Journal of Korean Society of Forest Science
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• v.59 no.1
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• pp.51-56
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• 1983

Embryo tissue from Pinus koraiensis was established in culture on G.D. and W.S. basal medium supplemented with the auxin (NAA, 2,4-D, IBA) and kinetin. The various combinations of growth regulators were studied in order to determine the specific requirements of the callus tissue in vitro. The inorganic nutrient combination of G.D. medium was found to be better than that of W,S. medium. G,D. basal medium supplemented with 0.1 ppm NAA and 0.1 ppm kinetin was the most successful nutrient combination for the growth of callus induced from the embryo of P. koraiensis.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.30 no.3
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• pp.355-360
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• 1997

In order to investigate the influence of photosensitized oxidation in the sun-dried irish moss (Chondrus Ocellatus), laver (Porphyra Yezoensis) and ultra violet irradiated oyster (Crassostrea gigas) the oxidation of lipid and isomers of hydroperoxides were analyzed by gas chromatography-mass spectrometry. The lipid contents of oyster, irish moss and layer were $2.7\%,\;0.1\%,\;0.1\%$ of respectively. Peroxide value, 56,7 meq/kg in the raw oyster was increased of 100.9 meq/kg by the U.V, irradiation for 4 hours. Also the peroxide values of the irish moss and laver were increased by the sun-drying. In the identification of hydroperoxides isomers by trimethylsily (TMS) derivative of photo-oxidized lipid from oyster, irish moss and laver, the proportions of positional isomer, 9-OOH and 13-OOH were dominant than those 10-OOH and 12-OOH.