• Title/Summary/Keyword: Weeping

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Hydrodynamic Analysis of Rectangular Sieve Tray under Weeping Conditions (위핑 유동 조건에서의 직사각형 체 주위 유동의 수력학적 분석)

  • Uwitonze, Hosanna;Lee, Inwon
    • Journal of the Korean Society of Visualization
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    • v.15 no.3
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    • pp.34-40
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    • 2017
  • Within fractionating devices existing in separation and purification industries, sieve trays are widely used as tower internals and their choice is due to economical attractiveness. While operating a trayed distillation tower weeping phenomenon has a critical effect on the efficiency, in this case study a weeping phenomenon was undertaken by means of numerical model in a rectangular sieve tray. Eulerian-Eulerian Computational Fluid Dynamics (CFD) method was used and the obtained CFD results are in a good agreement with the experimental data in terms of weeping rate and pressure drop.

Three Cases of Atopic Dermatitis (柱枝加黃기湯으로 치료한 소아 아토피 피부염의 한방치험 3례-삼출을 주증상으로 하는 환자를 대상으로)

  • Jung Jin-yiung;Kim Yoon-bum
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.17 no.2
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    • pp.131-139
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    • 2004
  • Background: Infantile atopic dermatitis involves the face, with erythematous weepy patches. This weeping eczema has severe itching and causes eczema secondarily. Also it has a profound effect on the quality of life. Many infantile AD patient and parent suffer troubles because of weeping eczema. Objective: The purpose of this study was to evaluate the efficacy of Gyejigahwanggitang(桂枝加黃?湯) in infantile AD patient with weeping eczema. Method: I treated them with Gyejigahwanggitang(桂枝加黃?湯) for balancing YoungWi(調和榮衛). I also used acupuncture therapy.

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A Study on the Mixed-Seeding Rates of Exotic Grasses for Slope Revegetation Measures (사면(斜面) 녹화용(綠化用) 외래초종(外來草種)의 혼파조합(混播組合)에 관(關)한 연구(硏究))

  • Jeon, Gi-Seong;Woo, Bo-Myeong
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.1 no.1
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    • pp.102-109
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    • 1998
  • This study was conducted to find out the growth characteristic of mixed-seeding in the grasses for slope revegetation measures. Seeding treatment with six combination types of five grasses used for this experiment such as orchardgrass(Dactylis glomerata 'Potomac'), perennial ryegrass(Lolium perenne 'Manhattan'), tall fescue(Festuca arundinacea 'Jaguar'), kentucky bluegrass(Poa pratensis 'Majestic') and weeping lovegrass(Eragrostis curvula). The growth of orchardgrass, perennial ryegrass and tall fescue were good on mixed-seeding condition in case of number of individuals, heights and coverages at this experiment. These plants will useful for revegetation measures mixed-seeding, but weeping love grass and kentucky bluegrass did not show a desirable growth in mixed-seeding condition, and these plant prefered mixed seeding to single seeding. Regeneration percents of orchardgrass, perennial ryegrass and tall fescue were higher than that of weeping love grass and kentucky bluegrass, and coverage kept on good condition through one year after seeding, therefore, these plants will effective for initial stage revegetation measures.

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A Study on Spatial Imagery(Yijing) Analysis of the Weeping Bamboo Lodge(Xiaoxiangguan) in #x300E;A Dream of Red Mansions』 (『홍루몽(紅樓夢)』에 나타난 소상관(瀟湘館)의 의경(意境) 분석)

  • Yun, Jia-Yan;Kim, Tae-Kyung
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.32 no.2
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    • pp.148-158
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    • 2014
  • This study aims to analyze the Spatial Imagery(Yijing) of the Weeping Bamboo Lodge(Xiaoxiangguan) which is from Chinese Qing dynasty novel "Dream of Red Mansions". The conclusions are as follows. First, the fantasy garden what is described in the novel "Dream of Red Mansions" can be recreated in reality. Second, through the analysis of the spatial imagery, the plants of the Weeping Bamboo Lodge contains a lot of meaning, and mainly through the plants to express meaning. Third, the main garden concept of the Weeping Bamboo Lodge is "Inspired by Nature", the representative space constitution principle is "the art of circuitous" and "view borrowing". Fourth, the concept of traditional garden in the novel "Dream of Red Mansions" and the landscape architecture theory book "Yuan Ye(Art of garden building)" is essentially in agreement. The generation process of garden spatial imagery was showed in this study, and on the basis of this, the garden spatial imagery of the Weeping Bamboo Lodge was analyzed. It is provided the useful information for the future research, and the novel "Dream of Red Mansions" as a important book was determined in the research of traditional garden.

Study on the Re-corrosion Characteristics of Corrosion Products by Weeping of Iron Artifacts (철제유물 Weeping에 따른 부식화합물의 재부식 특성 연구)

  • Park, Hyung-Ho;Lee, Hye-Youn;Lee, Jae-Sung;Yu, Jae-Eun
    • Journal of Conservation Science
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    • v.29 no.3
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    • pp.287-296
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    • 2013
  • Excavated iron objects are preserved in stable condition through processes of conservation treatment because they are found in the form of various corrosion products. However, the conservation treatment leads to re-corrosion over time and accordingly, iron objects can be severely damaged, and therefore fundamental measures need to be prepared to control it. In this study, the types and characteristics of corrosion products were scientifically analyzed according to the re-corrosion of iron artifacts. In addition, the stability of the corrosion products was evaluated by exposing the standard samples under the re-corrosion environment. Re-corrosion proceeded with weeping in reddish brown on the cracks of iron artifacts. Weeping was detected akagan$\acute{e}$ite had a low hydrogen ion concentration and high chloride ion. The selection of standard sample goethite, lepidocrocite, hematite, and magnetite, were evaluated corrosive by weeping. After the samples were immersed in HCl(pH 1), $H_2SO_4$(pH 1), $H_2O$(pH 6) solution, they had been maintained for 180 days in relative humidity of 20%, 50%, 80% to investiage the changes of chemical components. As a result of analysis, the changes of chemical components were not showed in goethite, lepidocrocite, and hematite. But magnetite was changed to lepidocrocite in solution including chloride ion($Cl^-$) and to goethite and lepidocrocite solution including sulfuric acid($SO{_4}^{2-}$). Results of the study, in the case of magnetite known as s stable corrosion compound, it was identified the corrosion of magnetite occurs by corrosive ions, which means weeping generated in the iron artifacts can corrode magnetite as well as base metal.

Friction and Lubrication Behaviors of Rabbit Joint Cartilage (토끼 관절연골의 마찰 및 윤활 특성)

  • 이권용;이홍철
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 2000.06a
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    • pp.42-47
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    • 2000
  • The friction and lubrication characteristics of joint cartilage were investigated using the metatarso-phalangeal joint cartilage of rabbit against rotating stainless steel disk. Friction tests were conducted by dry and bovine serum lubricated sliding at room and body temperatures. For the dry sliding tests, low friction coefficient of 0.1-0.15 was observed at the early period of test, and then the friction coefficient increased as a test continued. With increasing applied load the early period of low friction lengthens. For the lubricated sliding tests, the coefficient of friction decreased as the applied load increased. And also the coefficient of friction decreased continuously to 0.07 as the test duration increases. These results can be interpreted that the squeeze or weeping lubrication mechanism dominates the friction and lubrication characteristics in the joint cartilage of rabbit.

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Friction and Lubrication Behaviors of Rabbit Joint Cartilage (토끼 관절연골의 마찰 및 윤활 특성)

  • 이권용;이홍철
    • Tribology and Lubricants
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    • v.17 no.4
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    • pp.307-311
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    • 2001
  • The friction and lubrication characteristics of joint cartilage were investigated using the metatarso-phalangeal joint cartilage of rabbit against rotating stainless steel disk. Friction tests were conducted by dry and bovine serum lubricated sliding at room and body temperatures. For the dry sliding tests, low friction coefficient of 0.1-0.15 was observed at the early period of test, and then the friction coefficient increased as a test continued. With increasing applied load the early period of low friction lengthens. For the lubricated sliding tests, the coefficient of friction decreased as the applied load increased. And also the coefficient of friction decreased continuously to 0.07 as the test duration increases. These results can be interpreted that the squeeze or weeping lubrication mechanism dominates the friction and lubrication characteristics in the joint cartilage of rabbit.

Crown Gall of Weeping Fig Caused by Agrobacterium larrymoorei and A. tumefaciens (Agrobacterium larrymoorei와 A. tumefaciens에 의한 벤자민고무나무 뿌리혹병)

  • Lee, Young-Kee;Hwang, Hye-Kyung;Hwang, Tae-Ho;Myung, Inn-Shik;Koo, Han-Mo;Cha, Jae-Soon
    • Research in Plant Disease
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    • v.12 no.3
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    • pp.189-196
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    • 2006
  • Crown gall on lower stem of weeping fig(Ficus benjamina Roxb.) was first observed at Daejon in 2003. Tumors were about 15 cm in size and semi-round with rough surface texture of dark brown color. Two virulent isolates among ten bacteria isolated from the tumor tissues were characterized. Their colonies were convex, glistening, circular with an entire edge, and white or tannish cream in color on potato dextrose agar supplemented with 0.5% $CaCO_3$. They were rod shape with peritrichous flagellae, gram-negative, aerobic growth, oxidase-positive, and grew on D1M agar. The isolates were identified as Agrobacterium larrymoorei and A. tumefaciens based on biochemical and physiological characteristics, fatty acid profiles and substrate utilization patterns. Seedlings of some host plants excepting grapevine produced typical galls two to three weeks after inoculation with cell suspensions of the virulent strains. This is the first report on crown gall of weeping fig in Korea.

Studies on the soil - erosion- control effect of underground growth of several grasses used to rodside vegetation (도로비탈면 녹화에 사용되는 주요 초목식물의 지하부 생육이 토양안정에 미치는 효과에 관한 연구)

  • 김남춘
    • Journal of the Korean Institute of Landscape Architecture
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    • v.18 no.2
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    • pp.45-55
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    • 1990
  • This study describes on the erosion control effects of the several grasses and its mixtures for the man-made slopes. The grasses used for this experiment include cool-season grasses such as Festuca rubra L. (Creeping redfescue), Poa pratensis L. (Kentucky bluegrass), Lolium perenne L. (Perenial ryegrass), Lolium multiflorum LAM. (Italian ryegrass), Festuca arundinacea Schrel. (Tall fescue), and warm-season grasses such as Eragrostis curvula Schrad. (Weeping lovegrass), Zoysia japonica Steud. (Zoysiass) and native plants (Artemisia princeps var. orientalis Hara, Lespedeza cuneata G. Don, Arundinella hirta var. ciliata K.) This study was conducted at Dan-kook University from April, 1988 to Octover, 1989. The results are summurized as follows; 1.Cool-season grasses covered the ground quickly in early stage, and weekened slowly during sumer season. Warm-season grasses and native-plants covered the ground slowly in early stage, but during summer season they grew vigorously, so outweighed cool season grasses. 2. The amount of aboveground growth of weeping locearass and underground growth of Artemisia prinoepts are quite differant from others. Since Arumdinella hirta has deep root system, it is thought to very useful protection of unstable for hrdro-seeding. Because cool-season grasses are useful for quick coverage, and native plants or warm-season grow well during summer season with the better compatability to weeds. 3.Mixture III(cool-season and warm-season grasses), mixtureIV(native spp. and Italian ruegrass), and mixtureV(native spp.) resulted in better control of erosion control on man-made slopes. Native spp. has equivallent capacity of erosion control compared to several foreign grasses.

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Effects of Moisture Stress on Germination of Vegetable and Turfgrass Seeds (수분결핍(水分缺乏)이 채소(菜蔬)와 잔디 종자(種子)의 발아(發芽)에 미치는 영향(影響))

  • Pyon, Jong-Yeong
    • Korean Journal of Agricultural Science
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    • v.6 no.1
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    • pp.15-20
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    • 1979
  • In order to determine the effects of different degrees of moisture stress on germination of various plant species, hundred seeds of six vegetables and six turfgrasses were germinated in petri dishes on filter papers moistened with water-mannitol solutions of 0, 2, 4, 8, 10, and 12 atmosphere osmotic concentration (degrees of moisture stress). The percentages and rates of germination of all species tested were generally decreased with: increase in moisture stress. Chinese cabbage and cucumber were quite resistant to physiological drought as the germination was not appreciably affected until moisture stress exceeded 10 atmosphere. However, increase in moisture stress decreased germination affecting most seriously tomato, carrot and squash. Weeping lovegrass, Italian ryegrass and perennial ryegrass germinated well at 10 atmosphere but the germination of Kentucky bluegrass, meadow fescue and orchardgrass was greatly reduced by increasing osmotic pressure. The result indicates that it may be possible to select drought resistant species and varieties by their ability to germinate in osmotic solutions.

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