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Studies on Degradation of Butachlor and Nitrofen in Different Soil Conditions (토양중(土壤中) Butachlor 와 Nitrofen의 분해(分解)에 관(關)한 연구(硏究))

  • Oh, Byung-Youl;Jeong, Young-Ho;Lee, Byung-Moo
    • Applied Biological Chemistry
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    • v.24 no.2
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    • pp.112-119
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    • 1981
  • The persistence of preemergence herbicides, butachlor [2-chloro-2,6-diethyl-N(butoxymethyl) acetanilide] and nitrofen(2,4-dichlorophenyl-4-nitrophenyl ether), at 10 ppm level in different soil conditions amended with organic matter and lime was studied under flooded and field moisture capacity. The microbial breakdown played a major role in the dissipation of the herbicides in soil. Nitrofen degradation in flooded soil was greatly accelerated, while it was slowed down in field moisture capacity as compared with butachlor. Increased amendment of rice straw to the soil shortened the half-life of butachlor under flooded condition, however it prolonged that of butachlor when the amendment was exceeded over 1% on dry weight basis. Liming the soil stimulated decomposition of the herbicides in the soil systems, which ap pears to be pH independent.

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A Survey on Korean Traditional Kitchen Appliances of Kyongsang-Buk-do Area (경북지역 주부들의 전통 부엌 세간의 보유 현황 및 이용실태 조사 연구)

  • 한재숙;최영희;조연숙;변재옥;한경필;김현옥;정종기;최석현
    • Journal of the East Asian Society of Dietary Life
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    • v.12 no.4
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    • pp.269-279
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    • 2002
  • Housewives residing in the Kyongsang-Buk-do area were surveyed to determine their ownership of Korean traditional kitchen appliances and their usages. A breakdown of the appliances for the survey was as follows: 16 tableware, 17 household utensils, 15 heating utensils, 14 ceramic and earthen pottery, 6 stone utensils, 9 cooking utensils, 9 utensils made of the dried bamboo and bush clover, and 13 dining tables ("sang"). The types of the appliances with the largest ownerships and most frequently used were as follows: The jeopsi was most frequently owned, followed by the daejeop and the jaengban. The most frequently used item was the jubal,, followed by the daejeop and the jeopsi. Among the wooden utensils, bangmangi was most frequently owned, followed by the chanjang, the che, the doe, mal and hop. The most frequently used household utensil was the chanjang, followed by the takjasang and the doe, mal and hop. The utensil the most people owned fur heating was the jujeonja, followed by the seoksoe, the musoesot and the siru. The most frequently used utensil for heating was the jujeonja, the musoesot and the seoksoe, in the order. As for the ceramic and earthen pottery, hangari and dok were owned and used most frequently. The maetdol and the jeolgu, though very low in their ownership rate, were most frequently owned items among the stoned utensils. The kal and the doma were the most frequently owned and used cooking utensils. The sokuri, and the chaeban and the baguni were the most frequently owned among the utensils made of the dried bamboo, bush clover and straw, while the sokuri was used the most frequently, followed by the chaeban and the jori. Among the dining tables, the kyojasang was the item most frequently owned, followed by the seonban and the chaeksangban, while the wonban was the most frequently used, followed by the kyojasang and the chaeksangban.eksangban.

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A Comparison of Characteristics between Danish and Korean Farmhouses -In Reference to Farmhouse Plans, Use of Rooms including Furniture Arrangement, and Building Materials-

  • Choi, Jung-Shin
    • International Journal of Human Ecology
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    • v.8 no.1
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    • pp.67-78
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    • 2007
  • The aim of this paper was to compare differences and similarities of farmhouses between Denmark and Korea as a cross-cultural study. Farmhouses built during the 18th and 19th centuries in Denmark, and ones from Chosun Dynasty (AD. 1392-1910) in Korea were targets of this study. Literature study and field trips to districts and open-air museums in both countries were used. Field trips were carried out during summer of 2005 in Denmark, and fall of 2005 in Korea. Detailed comparisons focused on farmhouse plans, the use of rooms and furnishing, and building materials. As a conclusion, some differences were found between the two countries. In terms of farmhouse plans, square types with four wings, and parallel types were the most frequent forms in Denmark, while a few types, such as the "I", "L", "U" shapes and square types, were more frequently found in Korea. In Denmark, the most important room was the dwelling-room, in which daily family life took place. Every member of the family slept, ate, and worked here, and kept geese and young animals during the winter season. Therefore, this room was laid out in the center of the house. However, Anbang, the most important room in Korea, was not situated in the best part of the house. Instead, the Daechung-maru occupied the center and the best place because the daechung-maru, in which the ancestral ceremony was held, was thought of as more important than a place for live people. Also the use of rooms and furnishing was quite different between the two countries, reflecting each life style. Danish furnishings represented practical daily life, while Korean furnishings reflected more conceptual aspects. It might have resulted from Confucianism in the Chosun Dynasty, which ruled daily life and even influenced use of rooms and furnishings. In other word, philosophy influenced common peoples' daily life and living environment. With reference to building materials, there was rarely a difference between the two countries. Major materials for farmhouse were quite common, such as half-timbering wood and clay, but the difference was in bricks and roof coverings. Bricks were rarely used in Korean farmhouses, while rice-straw was rare for the roof of a Danish farmhouse. Of course, the choice of materials was strongly affected by the local surroundings and overall environment. This result can give some clues for design ideas when architects and interior designers plan housing that is adapted for local peoples. This kind of cross-cultural study can also contribute to one's understanding of foreign culture, especially in housing and culture. And, it can broaden one's insight of design ideas for designers who have to compete frequently with designers in foreign countries.

Creation of an Environmental Forest as an Ecological Restoration

  • Lee, Chang-Seok;You, Young-Han
    • The Korean Journal of Ecology
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    • v.24 no.2
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    • pp.101-109
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    • 2001
  • We created an environmental forest on the basis of ecological design around the incineration plant of Jindo Engineering and Construction Co., Ltd., which is located in Jeongwang-dong, Siheung-si, Kyunggi-do. To get ecological information of this site, physico-chemical properties of soil on salt marsh, which is located close to the syudy site and of forest soil transported from other sites for ecological restoration were analyzed. Texture of salt marsh and transported soils were loam and sandy loam, respectively. pH, organic matter, T-N, available P, and exchangeable K and Na contents of salt marsh and transported forest soils were 6.7 and 5.4, 4.1 and 0.4%, 1.0 and 0.3mg/g, 46.7 and 6.8ppm, 521 and 207ppm, and 3.8 and 0.5mg/g, respectively. Introduced plants were selected among the dominant species of forests and the species composing the potential natural vegetation around the present study site. Those plants were selected again by considering the tolerances to air pollution and to salt, and their availability. Selected trees were Pinus thunbergii, Sophora japonica, Celtis sinensis, Quercus aliena, Q. serrata, Q. dentata, and Q. acutissima. Selected sub-trees were Albizzia julibrissin, Koelreuteria poniculata, and Styrax japonica and shrubs were Rhododendron yedoense var. poukhanense, R. mucronulatum, Callicarpa japonica, Euonymus alatus, E. japonica, and R. schlippenbachii. On the other hand, introduction of herbs was not considered except for Liriope platyphylla, which was ornamentally planted in one site. Planting bed of mound type was adopted to provide the fine drainage system. Mound was designed to furnish litter, A, B, and C layers simuating the profile of forest soil. Slope of mound was mulched by rice straw of 2cm in thickness to prevent for sliding of litter and soil in cases of strong wind or heavy rain. Height of mound was designed to secure more than 1 m by combining A and B layers. Narrow zones, in which mound with stable slope degree cannot be prepared, was designed to equip the standard soil depth with the introduction of stone for supporting. On the other hand, plants with shallow root system were arranged in some zones, in which satisfactory soil depth cannot be ensured. Plants were arranged in the order of tree, sub-tree, and shrub from center to edge on the mound to make a mature forest of a dome shape in the future. Dispersion of plants was designed to be random pattern rather than clumped one. Problems on creation of the environmental forest by such ecological design were found to be management or inspection by non-specialized project operators and inspecting officers, and regulations for construction without ecological background. Alternative plans to solve such problems were suggested.

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A Study of Costumes in the Palace Painting Depicting the Worship of Buddha during the Reign of King Myungjong (관중숭불도에 나타난 16세기 복식연구)

  • 홍나영;김소현
    • Journal of the Korean Society of Costume
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    • v.38
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    • pp.305-321
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    • 1998
  • The costume style of the Chosun dynasty changed greatly after Imjinwaeran (the Japanese Invasion of Chosun Korea, 1592∼1598). Most of the extant costumes come from the late Chosun, but some costumes produced be-fore Imjinwaeran have been excavated, and in addition, information on these older constumes is contained in contemporary literature. Of especial value in the study of pre-Imjinwaeran Chosun constumes is a mid-sixteenth century palace painting depicting the worship of Buddha, a painting in the collection of the Ho-Am Art Museum in Seoul. The present study of costume during the middle Chosun dynasty focuses on this painting, and compares it with other contemporary palace paintings, and with other contemporary palace paintings, and with Nectar Ritual Paintings. The following conclusion were drawn : * Concerning woman's hair styles of the time, married women wore a large wig. Un-married women braided their hair, and then either let it fall down their back or wore it coiled on top of their head. * The major characteristic of woman's costumes was a ample, tube-like silhouette, with the ratio of the Jeogori(Korean woman's jacket) and skirt being one-to-one. * The style of Jeogori in the painting was like that of excavated remains. Some Jeogoris were simple (without decoration), while some Jeogoris were worn with red sashes. Here we can confirm the continuity of ancient Korean costumes with those of the sixteenth century * Although the skirt covered the ankles, it did not touch the ground. Because the breadth of the skirt was not wide, it seems to have been for ordinary use. Colors of skirts were mainly white or light blue. * All men in the painting wore a headdress. Ordinary men, not Buddhist monks, wore Bok-du (headstring), Chorip (straw hat), or Heuk-rip (black hat). In this painting, men wore a Heukrip which had a round Mojeong (crown). * The men wore sashes fastened around their waist to close their coats, which was different from the late Chosun, in which men bound their sashes around their chest. That gave a ration of the bodice of the coat to the length of the skirt of one-to-one, which was consistent with that of woman's clothing. * In this painting, we cannot see the Buddhist monk's headdress that appeared later in the Chosun, such as Gokkal (peaked hat), Songnak (nun's hat), and Gamtu (horsehair cap). These kinds of headdresses, which appeared in paintings from the seventeenth century, were worn widely inside or outside the home. Buddhist monks wore a light blue long coat, called Jangsam (Buddhist monk's robe) and wore Gasa (Buddhist monk's cope), a kind of ceremonial wrap, round their body. We can see that the Gasa was very splendid in the early years of the Chosun dynasty, a continuing tradition of Buddhist monk's costumes from the Koryo dynasty.

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Preference of Herbal Medicine Packagings for Caregivers (환아 보호자 대상으로 실시한 한약 용기 선호도 조사)

  • Jeong, A Ram;Lee, Hye Yoon;Cheon, Jin Hong;Kim, Ki Bong
    • The Journal of Pediatrics of Korean Medicine
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    • v.28 no.4
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    • pp.71-84
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    • 2014
  • Objectives The aim of this study is to investigate preferred herbal medicine packaging. Methods The study used questionnaires for the caregivers, who have administered their children herbal and western medicine. 106 of them were visited the Department of Pediatrics, the Oriental Medicine Hospital of ${\bigcirc}{\bigcirc}$ University, during the period between in 2014. We used PASW Stastics 18.0 to analyze different dosing methods, and preferred packaging and drug formulations. Results 1. 77.4% answered that they use cups to administer medications, 9.4% transferred it to other plastic bottles, 8.5% used straw to drink from the pouch, 4.7% drank as it is inside the pouch. Method of taking it was not very significant depending on the age. 2. Compare to pills and capsules, 48 responders answered that pills and capsules are easier to take, 11 answered herbal medication is easier to take. 32 answered that there were no significant difference. 3. 45.3% reported vinyl pouch was preferable, 44.3% answered spout pouch was preferred, 5.7% answered bottles are convenient, and another 5.7% responders thought cup was fine. Others include syrup bottles had 1 person. These varying preferences were not depending on the age variations. 4. 56.3% answered that price was the main reason why they prefer one over the other. Others 29.2% stated convenience, 12.5% reported safety, and 10.4% people answered ease of administration as their main reason for their preferences. Conclusions Based on this study, numbers of parents felt inconvenient administering herbal medicine as a vinyl pouch, and felt necessary to improve this. However, price and other reasons made vinyl pouch still more preferable option. Vinyl pouch that we are using today didn't show any safety issues. Therefore, it is recommended to still use vinyl pouch, but with caps on top to improve administration and distinguishing issues.

Control and Incidence of Leaf Blight on Lily with Different Cultural Systems (재배 형태별 백합 잎마름병의 발생 양상 및 몇가지 경종적 처리의 방제 효과)

  • Hahm, Soo-Sang;Lee, Ki-Hwan;Lee, Jong-Won;Lee, Hee-Duck;Yu, Seung-Hun
    • Research in Plant Disease
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    • v.13 no.3
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    • pp.152-156
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    • 2007
  • Incidences of leaf blight of lily cultivars Raizan and Casa Blanca in the open field cultivation were 50% and 45.4%, respectively, while those in the green house cultivation were significantly reduced to 1.5% and 1.9%, respectively, In the green house, the incidences of the disease in sprinkler watering cultivation were $14.5{\sim}16.5%$, while those in drip watering cultivation were only $1.5{\sim}2%$. Incidence of the disease was severe in the field where the lily was cultivated successively for 2 to 3 years. Isolation frequencies of B. elliptica from overwintered plant debrises such as leaves, stems, capsules, and bulbs were 43.3%, 46.7%, 60% and 0%, respectively, while those of B. cinerea were 10.3%, 0%, 3.3% and 0%, respectively, Incidence of leaf blight in the field where diseased plant debris was cleaned was 7.3%, while that in the field where diseased plant debris was not cleaned was 56.5%. Incidences of the disease in the field where coverages of soil surface with black vinyl, bark or rice straw were used were 6.6%, 8.2% and 11.3%, respectively, while that in the field where the coverage was not used was 21.3%.

Incidences of Phytophthora Fruit Rot on Fig according to the Cultural Practice and Its Eco-friendly Control (재배양식에 따른 무화과 역병의 발생 및 친환경적 방제)

  • Ma, Kyeong-Chul;Byeon, Man-Ho;Bang, Geuk-Pil;Ko, Sug-Ju;Lee, Yong-Hwan
    • Research in Plant Disease
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    • v.14 no.2
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    • pp.107-111
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    • 2008
  • For the eco-friendly control of fruit rot of fig, disease incidences according to the cultural practices at 51 fig orchards in south coast area of Korea were surveyed in 2002, and the effect of soil mulch and potassium phosphonate on fruit rot of fig was evaluated from 2002 to 2004. Diseased fruits of fig orchards of open field, rain shading, and vinyl house were 33.3%, 7.5%, and 0%, respectively. Diseased fruits were rated at 34.6%, 35.7%, and 27% as the tree spacing of $2m{\times}2m,\;2m{\times}3m,\;and\;3m{\times}4m$, respectively. Among the soil mulching materials, barley straw showed disease incidence of 1.8% and 3.5% of diseased fruits compared to 42.1% and 48% of no mulching in 2002 and 2003, respectively. Diseased fruits in dark paper film mulching were recorded at 4.8% and 12% in 2002 and 2003, respectively, which were lower than those in dark polyethylene film mulching at 11.2% and 26.2%. When potassium phosphonate(1,000 ppm) was sprayed 3 times with 10 days intervals from the beginning of disease occurrence, disease incidences were rated at 3.0% and 2.0% in 2003 and 2004, respectively, which were much lower than those of control at 45.9 % and 39.3%.

Characteristics of a new button mushroom variety 『Dahyang』 (갈색 양송이 신품종 '다향'의 형태적 특성)

  • Kim, Hong-Kyu;Ham, In-Gi;Lee, Ka-Soon;Lee, Byung-Joo;Kim, Yong Gyun;Yang, Euy-Seog;Yoo, Young-Bok;Kim, Hong-Gi
    • Journal of Mushroom
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    • v.9 no.1
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    • pp.17-21
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    • 2011
  • Dahyang, a CNARES's newly bred cultivar, is a CM061202 strain isolated and selected from 161 single-spores of brown button mushroom. It was selected as a new cultivar after comparison of yield, mycelial growth and quality with No. 705. Mycelial growth of Dahyang on compost extract mushroom complete medium at $25^{\circ}C$ for 15 days was 63mm when it was compared with that of No. 705 with 38mm. The cultivation temperature of Dahyang was 15 to $19^{\circ}C$ which was $2^{\circ}C$ higher than that of No. 705 with 15 to $19^{\circ}C$ cultivated on rice straw bed. The color of pileus of Dahyang was brown. Pinhead producing period was 30 days which is 1 day late than that of No. 705 with 29 days. Dahyang yielded 37% more with $49.1kg/3.3m^2$ than that of No. 705 with $35.8kg/3.3m^2$, respectively. The weight was 16.0g which was heavier than 14.0g of No. 705. The thickness and diameter were also more than those of No. 705. The stipe was shorter and thicker than that of No. 705. Also physical characteristics such as hardness and elasticity were better than that of No. 705.

Winterkill and Strategy of Golf Course Management: A Review (동절기 피해의 이해와 겨울철 골프장 관리: 리뷰)

  • Lee, Sang-Kook
    • Asian Journal of Turfgrass Science
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    • v.25 no.2
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    • pp.133-137
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    • 2011
  • Winterkill can be defined as any injury including freeze stress kill, winter desiccation, and low temperature disease to turfgrass plants that occurs during the winter period. The major damages from winterkill were low temperature kill, crown hydration, and winter desiccation. Low temperature kill is caused by air and soil temperature. Soil temperature affect more severe to turfgrass than air temperature because low soil temperature cause fetal damage to turfgrass crown. Crown hydration is a form of winter injury in which intercellular water within the plant freezes and causes physical injury to the cell membrane and wall. This is eventually resulted in dehydration of cell. Winter desiccation is the death of leaves or whole plants due to drought during the winter period. To reduce winterkill damage, cultivar selection is very important. If changing cultivar is not allowed, cold temperature hardiness needs to be increased by providing nutrients especially phosphorus and potassium in the late fall. Turf cover is effective way to reduce winterkill damage. Remaining snow is positive process to reduce winterkill damage by insulating soil temperature. The previous researches reported many materials as turf cover such as straw, polypropylene, polyester, and wood mat. Aeration and topdressing is one of the process against winterkill. Both methods are mainly conducted to reduce thickness of thatch layer. In recent, relatively new materials called black or winter topdressing sand are used to protect soil temperature from low air temperature and thaw ice crystal that may remain in soil.