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Oil and Fats Chemistry and Coatings (유지화학(油脂化學)과 도료(塗料))

  • Chung, Kyung-Taek
    • Journal of the Korean Applied Science and Technology
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    • v.11 no.2
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    • pp.17-38
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    • 1994
  • Oil and fats has been using as the important raw materials in the coating industry from ancient time to date. This article was prepared with the aim of helping to the forward development trend for coating uses of oil and fats, as understand together the history using oil and fats for coatings, composition and classification coatings, types and composition of oil and fats using for coatings nowaday, how to use oil and fats for coating, film for coatings, film forming mechanism.

Change in composition of gut microbiota by exposure of natural medicines including Glycyrrhizae Radix in mice

  • Jeon, Yong-Deok;Song, Young-Jae;Jin, Jong-Sik
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2018.10a
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    • pp.126-126
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    • 2018
  • Many of researches have revealed that human intestinal microbiota is related to health. Several diseases like obesity, diabetes, and hypertension are affected by the microbiota directly and indirectly. So, interventions with food and drug have been tried to change a composition of the microbiota to better condition. However, few natural medicines have elucidated to date. To understand an influence on microbiota by plant materials including Glycyrrhizae Radix, the extract of medicines were administered to mice and the feces were collected before and after the administration. The feces were analyzed by terminal restriction fragment length polymorphism (T-RFLP). The changes in composition of mice gut microbiota were detected and analyzed. The data could be utilized to further study about biological activities of the plant medicines.

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Effects of Increase in Physical Activity Using Mobile Health Care on the Body Composition and Metabolic Syndrome Risk Factors in 30-40's Male Office Workers.

  • Lee, Jin-Wook;Park, Sung-Soo
    • Journal of the Korea Society of Computer and Information
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    • v.23 no.10
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    • pp.119-125
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    • 2018
  • The purpose of this study was to investigate the effect of health care on the body composition and metabolic Syndrome risk factors in male office workers. The subjects of this study were 30~40's male office workers and their physical activities were increased by mobile healthcare. The date analysis in this study was carried out paired t­test using SPSS 20.0 version(${\alpha}=.05$). The result of study were as follow: First. body composition kg(p<.015), BMI(p<.041), WC(p<.026) were significantly decreased after Increase in Physical Activity Using Mobile Health Care, although these did not reach statistical significance, SMM(p<.123), BF(p<.059) was slightly increased and decreased trend. Second, SBP(p<.300), DBP(p<.384) was slightly decreased trend and BS(p<.034) were significantly decreased after Increase in Physical Activity Using Mobile Health Care, Third, plasma TC(p<.015), TG(p<.003), LDL-C)(p<.000) were significantly decreased after Increase in Physical Activity Using Mobile Health Care and plasma HDL-C (p<.003) were significantly increased. These results suggest that increased physical activity using mobile health care has a positive effect on the body composition and metabolic syndrome index in male office workers. Sedentary lifestyles could be changed by Continuous feedback using mobile healthcare.

Soybean Ecological Response and Seed Quality According to Altitude and Seeding Dates

  • Shin, Sang-Ouk;Shin, Seong-Hyu;Ha, Tae-Jeong;Lim, Sea-Gyu;Choi, Kyung-Jin;Baek, In-Youl;Lee, Sang-Chul;Park, Keum-Yong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.54 no.2
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    • pp.143-158
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    • 2009
  • This experiment was carried out to examine ecological response and soybean quality as affected by environmental cultivation for producing high seed quality in domestic soybean variety. The results are as follows: Under equal cumulative temperature condition, soybean plants grown in Muju showed longer days to flowering, which was an effect of the long day-length on high latitudes, and longer duration of reproductive stage as a result of low temperature within that period. Considering apparent seed quality, 100 seed weight of soybeans grown in Muju was heavier than Miryang. Ratio of seed crack and disease-damaged seeds was lower in Muju, and these parameters decreases as planting was delayed. The protein contents did not show significant difference in terms of altitude and planting date, however, crude oil contents were higher in Miryang. An opposite trend was observed in C18:1 and C18:3. In the fatty acid composition, the proportion of C18:1 decreased as seeding date was delayed, and was higher in Miryang. Opposite observations were obtained from C18:3. The anthocyanin contents were highest on June 10 planting and higher in Muju than in Miryang. Isoflavone content was higher as seeding date was delayed and is similar accross seeding dates in Muju. As a summary, for high seed quality production the optimum planting date was June 10, and Muju was more suitable region than Miryang.

A Wheat Variety, "Hwanggeumal" with Good Bread Quality, Red Grain, Partial Waxy, Tolerance to PHS

  • Chon-Sik Kang;Chang-Hyun Choi;Kyeong-Hoon Kim;Kyeong-Min Kim;Go Eun Lee;Jin-Hee Park;Jong-min Ko
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2022.10a
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    • pp.203-203
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    • 2022
  • A new winter wheat(Triticum aestivum L.) cultivar "Hwanggeumal" was developed by the NICS(National Institute of Crop Science), RDA(Rular Dvelopment Administraion) in 2019. It was derived from a cross of the "Jokyoung//Kauz/Rayon" and "Jopoom" in 2008. It had advanced generation through bulk and pedigree method for seven years and designated line name "Jeonju398" after AYT(Advance Yield Trial) test for two years. And "Hwangeumal" was designated variety name after RYT(Regional Yield Trial) test in eight locations around Korea for two years from 2018 to 2019. Its heading date was April 19 and maturity date was May 31, which were similar to Jokyoung. "Hwanggeumal" had shorter plant height(75 cm) and spike length(7.1 cm), spikes per m2(699) and lower 1,000 grain weight(44.2 g) than "Jokyoung"(78 cm, 8.2 cm, 776, 46.6 g, respectively). "Hwanggeumal" was showed weak to winter hardiness and susceptible to powdery mildew but tolerance to PHS(Pre-harvest sprouting). The average grain yield in the AYT was 6.2 ton/ha, which were 10% more than "Jokyoung" And in the RYT was 5.1 ton/ha in upland and 4.4 ton/ha in paddy field, which were lower than "Jokyoung", respectively. "Hwanggeumal"s flour yield (71.4%) and flour lightness (91.82) showed similar to "Jokyung" and higher protein content (14.0%) and gluten content (10.3%) and SDS-sedimentation volume (60.3ml). These result showed that the "Hwanggeumal" dough strength of flour is strong than "Jokyung". "Hwanggeumal"s HMW-GS(High molecular weight gluten subunits) composition are Glu-D1 (5+10), Granule-bound starch synthase(GBSS) composition are Wx-A1 (a), Wx-B1 (b), Wx-D1 (a) and composition of Puroindolines are Pina-D1(a), Pinb-D1(b).

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A Study on the Interpretation and Application of Investment Treaties for Arbitral Award under International Investment Disputes (국제투자분쟁에서 중재판정시 투자조약의 해석과 적용에 관한 연구)

  • Hwang, Ji Hyeon;Park, Eun Ok
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.59
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    • pp.59-78
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    • 2013
  • The interpretation and application of investment treaties takes place mostly by ad hoc tribunals. Their composition varies from case to case. But in interpreting and applying investment treaties are bound to exist on a ground rule and coherent criteria. Given summarizing contents of this study, those are as follows. When interpreting investment treaties, (i) most tribunals is based on Article 31 and 32 of the VCLT, (ii) tribunals rely on previous decisions, (iii) tribunals resort to travaux pr$\acute{e}$paratoires, (iv) tribunals consider the interpretative statement. When applying investment treaties, (i) treaties apply only in relation to acts or events that occurred after their entry into force, (ii) tribunals have applied different inter-temporal rules to jurisdictional clauses and substantive provisions in treaties, (iii) the relevant date for purposes of jurisdiction is the date of the institution of proceedings, (iv) Under the ICSID convention, the host state and investor's nationality must be a party to the convention on the date the proceedings are instituted. This study is expected to possibly become guideline in the interpretation and application standards of investment treaties. So future disputes can be prevented and prepared in advance.

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Effects of Sowing Date and Method on the Yield and Winter Survival of Italian Ryegrass in Paddy (파종시기와 파종방법이 답리작 Italian ryegrass의 월동력과 수량에 미치는 영향)

  • 고영두;정길영;류영우;김두환;김재황
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.11 no.1
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    • pp.30-37
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    • 1991
  • This experiment was conducted to determine optimal sowing date and method of Italian ryegrass(Lo1iuwr wzultiflorum. Tetrone) in paddy of Gyeong Nam area. Treatments given were four sowing dates(Sep. 30, Oct. 10, Oct. 20 and Oct. 30) and four sowing methods (broadcasting on tillage ridging, broadcasting on zerotillage ridging, boundless broadcasting and alternated drilling). The characteristics of growth, winter survival, yield(fresh and dry matter) and nutr~ent quality were observed. The results obtained are summarized as follows: 1. Winter survival and yield components such as plant height, and number of stem were the highest due to higher survival tillers at the sown time of Sep. 30(p<. 05). 2. Plants sown on Sep. 30 showed the highest fresh and dry matter yield. Yield was decreased as delaying the date of sowing. Fresh and dry matter yield sown on Oct. 10, were obtained 7600 and 1100 kg, respectively, aftenvardly sign~ficantly decreased(p< .05). 3. Effect of sowing time and method on chemical composition were not recognized. 4. Winter surviva: sown on boundless-broadcasting was lower(p<. 05) than those of sown on broadcasting on ridging and alternated-drilling. 5. Fresh and dry matter y~elds were the highest when sown on broadcasting on tillage ridging but that of sown on houndless-broadcasting was relatively low. 6. The growth and forage yield were enhanced by sowing up to Oct. 10 and by sown on broadcasting on ridging (tillage or zerotillage).

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The Principles of the Composition of Library Science Curriculum (도서관학 교육과정 구성의 원칙)

  • Koo Bon-Young
    • Journal of the Korean Society for Library and Information Science
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    • v.15
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    • pp.45-72
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    • 1988
  • A study has been made prior to the emphatic research to see how the curriculum of the Library Science Departments, in general, has developed to date. In the principles of the composition of the curriculum of library science, research has been conducted to determine what decisions will be the most appropriate for the changing trend of the society, regarding the matters of general specialization versus subject specialization education, the definition, change and operation of the core subject, the expansion of the elective specialized subjects and the composition of the curriculum by types of the library, and the curriculum composition in terms of subject specilization. The curriculum should consist of a unified series of courses and other educational experiences, designed to meet specific program objectives. Principles and concepts should be emphasized, over routines and techniques. All students should study certain fundamental 'core' subjects, as well as more specialized electives. General education (studies outside of librarianship) should be a major component of the total education of the librarian. Fundamental core subjects should be treated as introductory courses covering deep studies that can provide the most inclusive information related to the library science field. They should be offered as pre-requisites required of all the students entering the Department of Library Science. Specialized subjects and interdisciplinary courses comprising subject concentration should be offered as electives at the advanced level.

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Effects of Date and Degrees of Defoliation on Seed Yield and Fatty Acid Composition of Perilla(Perilla ocymoids L.) (채엽시기와 정도가 들깨의 종실수량과 지방산조성에 미치는 영향)

  • Bin, Young-Ho;Choe, Zhin-Ryong;Yang, Min-Suk;Kim, Seok-Hyeon
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.33 no.2
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    • pp.182-188
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    • 1988
  • In order to find out the effects of the time and degree of defoliation on the seed yield, oil content and fatty acid composition of perilla seed, two cultivars, Namhae and Geumnung, were grown in two years, 1985 and 1987. Defoliation was initiated after 110 days from sowing with two-week interval. Defoliation degree was manipulated into four levels i.e. 0, 25, 50 and 75 per cent based on the total leaf area per plant. The results are summarized as follows: Flowering date, maturing date, culm length, culm diameter and branch numbers were not significantly influenced by the defoliation time and degrees, but by the cultivars. The higher levels of defoliation was made, the lower seed yield and 1000-seed were obtained, and either the earlier or the later time of defoliation, the less influence on seed yield were observed for both cultivars. Severe defoliation caused a significant decrease in oil content. The composition of unsaturated and saturated fatty acids was significantly decreased by severe defoliation (above 25 per cent). In conclusion, with a view to achieving higher seed yield and oil content with good quality, it is advisable to defoliate perilla leaf less than 25 per cent based on total leaf area at either or later growth stages.

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