• Journal of Korean Society of Rural Planning
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• v.24 no.2
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• pp.101-107
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• 2018

This study has been conducted to understand the relationships such as interspecific interactions between species and landscapes within and outside of agricultural land by identifying the flora features of Cornus officinalis farmlands in Gurye which designated as Korea's Important Agricultural Heritage System. For this, the flora of vascular plants was surveyed in every land uses of two representative districts. These two districts represent the own features of Cornus officinalis farming area which including land uses like forests(especially pine tree), valley, farmland(rice paddy, farms, Cornus officinalis farmland), and residence. Also differences in flora by stone wall's existence and Cornus officinalis's DBH were surveyed. As a result, Cornus officinalis farmlands showed the various vascular plants than the other land uses. According to the existence of stone wall in Cornus officinalis farmlands, there were no differences in appearance flora. But the flora in Cornus officinalis farmlands which have different Cornus officinalis' DBH(Divided into average over 15cm and under 8cm), various plants were showed in average over 15cm than average under 8cm. In conclusion, Cornus officinalis farmlands have been actively engaged in various types of land use and species exchanges, including forests, valleys, villages, and fields, and it has been confirmed that it acts as an ecological axis connecting forests to villages.

• Journal of the Korean Society of Food Culture
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• v.27 no.3
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• pp.316-323
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• 2012

This study examined the prevalence of the traditional pressed sweet called dasik recorded in 15 Joseon dynasty (1392-1909) royal palace studies. The ingredients used in Dasik during the Joseon dynasty were categorized into 43% cereal powders, 18.6% tree fruits, 17.4% flower powders, 11.6% root clods, 8.2% dry-fish beef powders, and 1.2% vegetables. In the early era of the Joseon dynasty there were no reports of dasik in the royal palace. In the middle era of the Joseon dynasty there was one report of dasik in the royal palace. But in the late era of the Joseon dynasty there were 85 kinds of dasik reported in the royal palace. The most common ingredients were, most common first, Song-wha (松花), Huek-im (黑荏), Hwang-yul (黃栗), Nok-mal (菉末), and chungtae (靑太). The appearance and taste of dasik varied greatly throughout the time period, eventually resulting in nutrient supplementation. This observation may be associated with the commercial industrial development that prevailed during the late Joseon dynasty. Further investigation will be conducted on the recipes and ingredients recorded in these old studies to develop a standardized recipe for the globalization of dasik.

• Journal of the Korean Society of Tobacco Science
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• v.19 no.1
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• pp.51-56
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• 1997

This experiment was conducted to reduce the cost of orient leaf using izmir, samsun and basma scraps in cigarettes manufacturing process. We manufactured rolled and paper sheet tobacco using orient scraps and substituted orient leaf in Pine tree to the rolled and paper sheet tobacco using orient scraps. Orient scraps were lower in total sugar, total sugar/nicotine and total nitrogen/nicotine, higher in nicotine and crude ash than those of orient leaves. Izmir and basma scraps were higher of 2-methyl butanoic, 3-methyl butanoic and 3-methyl pentanoic acid, but the chemical contents in samw scraps were lower than those of orient leaves. The specific gravity thickness, flness index, filling value were similar between orient scraps blended sheet tobacco and present sheet tobacco. The physical characteristics of orient scraps blended sheet tobacco were within Present sheet tobacco quality specification. The sheet tobacco using orient scraps was higher 2-metal butanoic, 3-methyl butanoic and 3-methyl pentanoic acid than those of present sheet tobacco. The rolled processed sheet tobacco using orient scraps was higher 2-methyl butanoic, 3-methyl butanoic and 3-methyl Pentanoic acid than those of paper sheet tobacco using orient scraps. The sample cigarettes using orient scraps sheet tobacco were lower 2-methyl butanoic, 3-mettwl butanoic and 3-mettwl Pentanoic acid than those of control cigarettes. The result of sensory test showed no great difference compared with sample of orient scraps and control cigarettes. This result shows that we can possible to substitute orient leaf to orient scraps to reduce the cost of orient leaf.

• The Korean Journal of Food And Nutrition
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• v.21 no.2
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• pp.190-196
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• 2008

This study was performed to aid the development of a reduced-calorie ssanghwa beverage, by using substitutes for high fructose com syrup(HFCS). The relative sweetness levels of HFCS, aspartame, acesulfame-K, and glucosyl stevia solutions were examined in comparison to a 10% sucrose solution in a binary solution model. And the sensory properties of ssanghwa beverages containing aspartame, acesulfame-K, and glucosyl stevia were evaluated at the equi-sweetness to HFCS. In the binary solution model, the relative sweetness of HFCS to sucrose was 0.8, while the values for aspartame, acesulfame-K, and glucosyl stevia were 140, 170, and 100, respectively. Sweet taste and sweet after taste were not significantly different between the HFCS, aspartame, acesulfame-K, and glucosyl stevia solutions. On the other hand, bitter taste, first taste, and overall eating quality were significantly different between the HFCS and aspartame solutions and between the acesulfame-K and glucosyl stevia solutions. Finally, the ssanghwa beverages sweetened with HFCS, acesulfame-K, and aspartame only had slight differences in sensory properties. However, the sensory properties of the beverages sweetened with HFCS and glucosyl stevia, respectively, were significantly different.

• The Korean Journal of Food And Nutrition
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• v.21 no.2
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• pp.197-203
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• 2008

This study was performed to aid the development of a reduced-calorie ssanghwa beverage, by using substitutes for high fructose com syrup(HFCS). Sensory scores were examined for ssanghwa beverages containing different levels of glucosyl stevia, aspartame, and acesulfame-K(0, 50, and 100%, respectively) in place of HFCS. The results showed that sensory scores were not significantly different for the beverages containing different levels of acesulfame-K, including aftertaste, ssanghwa taste, and overall eating quality. In contrast, the sensory scores of beverages containing 0 and 100% glucosyl stevia were significantly different. Data were also gathered comparing the sensory scores of beverages according to the different types of sweeteners. Bitter taste and astringency were not significantly different between the beverages sweetened with HFCS, KP(containing 50% acesulfame-K and 50% aspartame), SP(containing 50% glucosyl stevia and 50% aspartame), and SK(containing 50% glucosyl stevia and 50% acesulfame-K), respectively. Finally, aftertaste and overall eating quality were not significantly different between the HFCS and SP sweetened beverages.

• Journal of Korean Elementary Science Education
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• v.22 no.1
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• pp.97-108
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• 2003

The total 4,895 works presented at Science Fairs for the past 17 years(1986∼2002) are classified by subjects and participators, and the 1,277 works in biology section are analyzed by participators, contents, and object materials. The results are as follows: The proportion of exhibits according to sections was the most in Biology(26.1％). The social position of exhibitors and its proportion were 45.7% in students and 54.3% in teachers and popular people. The proportions of students' exhibits by the level of school were elementary school(68.3%). middle school(14.3%), and high school(17.4%). This indicates rapid decrease in the number of exhibits in middle and high schools. The proportion of students' exhibits(55.9%) is higher than that of teachers' exhibits(44.1％) in the section of Biology. In terms of contents, exhibits about Physiology and Ecology were the most(67.6%). The materials used in those exhibits and the proportion were Animalia(50.9%), Plantae(39.9％), Fungi(5.7%), Monera(1.8%), and Protista(1.7%). The proportion of taxa in plants studied in the exhibits were Dicotyledoneae(65.9％) and Monocotyledoneae(17.3％). The proportion of taxa In animals was Arthropoda(60.2％), Vertebrata(24.9%), and Mollusca(11.1％). The species used in those exhibits and its times were pine tree(11 times), dandelion(10 times), and butterfly(11 times).

• Journal of the East Asian Society of Dietary Life
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• v.12 no.6
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• pp.489-501
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• 2002

The list of monthly offering items of the Chunshin(薦新) ceremony, the service of offering the first food product of year to ancestors, shown in the Walryong(月令) in Oreaeui(五禮儀), the book written in early years of the Chosun dynasty, was studied and classified by food group. Six kinds of the cereals and grain products - barley, wheat, an early-ripening rice plant, a barnyard millet, and millet seed were offered. The meat products offered were wild geese, pheasants, swans, hares and dried-pheasants. Though not shown in e Walryong, roe deer and deer were offered from hunting trips in e winter. Eight kinds of sea-fish, six kinds of fresh-water first and six kinds of other seafood such as crab, octopus, and squid were offered. Ten kinds of vegetables: bamboo shoots, e99plants, cucumbers, etc. - were offered. Eleven kinds of tree fruits - cherries, apricots, Pears, etc., seven kinds of citrus fruits - tangerines, citrons, etc., seven kinds of nuts - chestnuts, pine-nuts, etc. and two kinds of melons - watermelons etc. - were offered. The hi인est variety in the offering items was the fruits category The remaining offering items included wine brewed from new rice. new brown seaweed, and green tea.

• Korean Journal of Materials Research
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• v.24 no.7
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• pp.363-369
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• 2014

This is the study on diffusion of ceramic body oxide compounds to glaze. For ceramic bodies, no ferrous oxides contain white ware, celadon, and 3 wt% iron oxides contained white ware was used in this experiment. These ceramic bodies were glazed by transparency glaze, iron oxides contained glaze, and glaze made by pine tree ash that treated in 1240 degree, under reduction condition for an hour. An electron probe microanalyzer(EPMA) was used to study diffusion of oxides and to calculate distance of ceramics bodies. As a result, only iron oxide and magnesium oxide from the body diffused to glaze, and also made a band which shown very thin layer of iron oxide and magnesium oxide between the body and glaze. The densest band of iron oxide formed 100 to $150{\mu}m$ in the glaze, and the densest band of magnesium oxide was found 50 to $100{\mu}m$ in the glaze. Therefore, it could be concluded that iron oxide in the body is diffused to the glaze and it affects the color of glaze, even though iron oxide exists in the glaze. Furthermore, the thickness of the glaze has an effect on the color of celadon.

• Journal of Forest and Environmental Science
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• v.27 no.3
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• pp.157-167
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• 2011

This study was conducted to analyze the stand structure and growth characteristics along different elevations of Pinus koraiensis natural forests located at mean elevation 1,300 m (site1), 900 m (site2) and 600 m (site3) on Mt. Seorak. Mean DBH and height of P. koraiensis were 25.4 cm and 12.3 m in site1, while that of site2 and 3 were over 40 cm and 20 m, respectively. For this reason, there was 5 times difference of single tree volume between site1 and other sites(p<0.05). Mean ringwidth increment of P. koraiensis was 1.1 mm/yr in site1, 1.5 mm/yr in site2 and 2.6 mm/yr in site3. However, recent growth of ringwidth has increased by 8.6% in site1, whereas site2 and 3 have fallen by approximately 50% over the last 10 years. These results signify that the growth and distribution of natural P. koraiensis are effected by different climatic environment along elevations.

• Journal of Soil and Groundwater Environment
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• v.26 no.6
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• pp.82-94
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• 2021

Facilities for low impact development (LID) or groundwater recharge have the high potential spreading groundwater nitrate contamination because of the rapid infiltration. This study was initiated to remove nitrate from the waters using agricultural byproducts as organic sources for denitrification during infiltration. As the first step of this purpose, we experimentally tested the denitrifying efficiency of 4 organic materials (pine tree woodchips, cherry leaves, rice straws, and rice hulls) and tried to identify the key factors controlling the efficiency. For this study, we precisely investigated the change of chemical reactions during the experiment by analyzing various geochemical parameters. The result shows that the denitrification efficiency is not simply linked to the availability of the easily decomposable contents in the organic matter. It is found that avoiding the severe pH decrease due to the CO₂ generation is the essence to derive the efficient denitrifying conditions when organic matters were used.