• Title/Summary/Keyword: 주공간

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Factors Involved in Promoting Seed Germination of Foeniculum vulgare (회향종자의 발아촉진에 관여하는 요인)

  • Eun Il, Lee;Chu Ho, Choi;Jong Ki, Lee;Seok Hyeon, Kim
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.42 no.4
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    • pp.435-445
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    • 1997
  • The effects of temperature, prechilling, chemicals such as $GA_3$, IAA, kinetin and $KNO_3$ on the germinability of Foeniculum vulgare seed of medicinal plant were examined. In Foeniculum vulgare, the germination rate appeared to be around 50~60% or more in general, showing no differences in germination rate with different temperatures, promoting substances, physical or chemical treatments, and prechilling treatments. The observation of embryo under stereoscopic microscope for Foeniculum vulgare in Umbelliferae showed that seeds with or without embryo was almost the same in number. This result suggests that the lower rate of germination in this species is caused by embryolessness of seeds. The straight-shaped embryos as well as Y-shaped embryos were also observed. Foeniculum vulgare of medicinal plants in Umbelliferae were observed under scanning electron microscope, and did not show any opening problem near micropyle area. Final count should be made on 7th day of germination test.

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Planting Patterns and Landscape Redevelopement of Pilam Seowon in Jangseong-Gun (장성 필암서원(筆巖書院)의 식재현황과 정비방안)

  • Lee, Won-Ho
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.29 no.1
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    • pp.131-141
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    • 2011
  • This study, as a purpose of base study for landscape redevelopement of Seowon, pointed out problems of planting patterns in each sector and suggested an alternative through analyzing old literature, complete enumeration survey in each sector and taking aerial images. the conclusions drawn from this study are as follows. A Pilam Seowon(historic site no 242) is located in a Pyungya-Sanrok(plain and mountain) district in Jangsung-gun and has Junhak-Humyo(Study room in the front and Shirne in the back) type. 23 taxonomic group of arbor, 6 taxonomic group of shrub and 5 taxonomic group of flowers are planted high-densitily in limited flat surface. It can be classified into being planted by family and being planted through landscape redevelopement in 1980s. Korean traditional trees are planted in this area like Pinus densiflora, Juniperus chinensis L., Thuja orientalis L., Zelkova serrato Makino, Sophora japonica L., Lagerstroemia indica, Prunus mume include Ginkgo biloba which is old big tree and is registered in Jangsung-gun as protected trees. The tea tree in this area was introduced from wild tea plantation in Yonhwa moutain and was planted. From now on, we have to pay consideration a form management of planted trees in the historical area, rearrangement of plant density due to over planting, removal of alien trees like Pinus bungeana and Canna generalisa, prevention a dwarfishness of main area due to over planting in outside facilities, recovery a alienation among each planting area, and planting concept from plants drawings on wall of buildings can be suggested. The implications of this case study is that introduction of over planting can make more problems like losing sense of place. Therefore, we must do a actual state survey on traditional landscape area like Seowon from preservation point of view.

A Comparative Study of Housing Cultures between Korean-Immigrants and Australians in Melbourne, Australia (호주인과 호주교민의 주공간 사용 및 주생활을 통한 주거문화 비교에 관한 연구 - 멜버른(Melbourne)을 중심으로)

  • Lee Young-Shim
    • Journal of Families and Better Life
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    • v.24 no.1 s.79
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    • pp.159-179
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    • 2006
  • Each ethnic group has different cultural backgrounds and each culture has developed with its own traditions. The interaction between different cultures is getting more active through acculturation and cultural contacts. The purpose of this study was to compare domestic living of Korean immigrants with Australians in the form of a Cross-Cultural study. For this, usage of domestic space and seating style of 52 Korean households and 53 Australian households in Melbourne were analyzed. Ethnographic research with questionnaire was used. The results of the research were as follows. 1. The most popular type of Living-Dining-Kitchen arrangement was L+ K. D for Koreans and L. D . K for Australians. 2. A laundry room was indispensable for both and they all wanted to do ironing in there as well as dry. Both were satisfied with the type which toilet was separated from the bathroom Drain hole on the floor of the bathroom was not indispensable for most Koreans and Australians. 3. Koreans and Australians were doing various activities in living area and both were getting together around kitchen(dining) area. The particular thing of Koreans was that they were using the main bedroom with multiple purpose. 4. The seating style of Koreans and Australians belong to chair-seating style generally. But Koreans were using floor seating style in making bed for the guest and making Kimchi. Koreans and Australians were using mixed style of floor seating and chair-seating in relaxing time with watching TV, treating guest or so. 5. Koreans were not satisfied with using carpet cause of dust but Australians were satisfied with the carpet cause of warmness. 6. Most Koreans and Australians were take off shoes inside of the house. Koreans were organize shoes around the front door of the house usually and Australians were organize shoes in bedroom usually. 7. The most popular heating system was ducted heating for both. The level of satisfaction about ducted heating was low for Koreans because they though that it could contaminate air. Australians were satisfied with ducted heating because they though that this one was fit on the weather of this area. 8. Living room was the most important one for Koreans and Australians and they also thought it should be decorated well for entertaining guests. Most Koreans were estimate that the brightness of the light of the house was not enough but it was estimated to moderate for Australians on the contrary.

An Analysis of the Living Arrangement of Australians for Cross-Cultural Study with Korean Immigrants in Melbourne, Australia (호주인과 호주 교민의 주거문화 비교를 위한 기초 연구(II) - 호주인의 주공간 및 주생활 분석을 중심으로 -)

  • Lee, Young-Shim;Lee, Sang-Hae
    • Journal of the Korean Home Economics Association
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    • v.43 no.9 s.211
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    • pp.143-162
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    • 2005
  • Many ethnic groups have different cultural backgrounds and each culture has developed with its own traditions. The interaction between different cultures is getting more active through acculturation and cultural contact. The purpose of this study was to provide basic data about the domestic living of Australians in order to compare with Korean immigrants in the form of a Cross-Cultural study. For this, usage of domestic space and seating style of 53 Australian households in Melbourne were analyzed. Ethnographic research with questionnaire was used. The results of the research were as follows. 1. The open plan type combining the kitchen, dining and tying areas was the most popular one for Australians and they are very satisfied with that type. 2. The laundry room has been planned traditionally and Australians demand to be able to dry their laundry and do ironing in there additionally. Most of Australians were satisfied with separated toilet and bathroom. h drain hole on the floor of the bathroom was not essential for most Australians. 3. Australians were doing various activities in the living areas and they also enjoy gelling together in the kitchen and dining areas. 4. The seating style of Australians was generally the chair-seating style. However, they sometimes made a bed for guests on the floor and watched TV and treated guests with both chair seating style and floor seating style. 5. Australians were satisfied with using carpet presumably for its warmth.6. Many Australians took off their shoes inside of the house for hygienic reason. Most people organized the shoes in the cabinet of the bedroom. 7. The most popular heating system was ducted heating for Australians and they were very satisfied with it because it was suitable for the weather in Melbourne. 8. The living room was the most important one for Australian families and they thought that it should be decorated well for entertaining guests. It was also considered that brightness of the light was enough for most Australians.

Geochemical Aspects of Groundwater in Granite Area and the Origin of Fluoride with Emphasis on the Water-Rock Interaction (화강암지역 지하수 수질의 특징과 불소원인에 관한 물-암석반응 연구)

  • Choo, Chang-Oh;Kim, Jong-Tae;Chung, Il-Moon;Kim, Nam-Won;Jeong, Gyo-Cheol
    • The Journal of Engineering Geology
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    • v.18 no.1
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    • pp.103-115
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    • 2008
  • The purposes of this study are to understand characteristic water-rock interaction mechanisms of groundwater in the granite area of Geochang and Hapcheon areas, Gyeongnam-do and to clarify the origin of fluoride. The possible water-rock interaction process and the source of fluorine were studied using water chemistry, rock chemistry, mineralogy by XRD, and microtexture analysis by backscattered electron image of the electron microprobe. No clear relationships between F and hardness was found. But the fluorine content increases to some extent with pH and well depth. Preferential alteration due to water-rock interaction took place along edges or cleavage, or margins of biotite. Because biotite is highly subject to alteration in granite aquifer, fluorine in groundwater is originated from the leaching of biotite.

Approximate Estimating of Plant Construction Duration Using a Standard Schedule Model (초기 사업단계에서 표준공정모델을 이용한 가스 플랜트 공사의 개략적 공사기간 산정)

  • Moon, Sung-Woo;Park, Sang-Chun;Kwon, Ki-Nam
    • Korean Journal of Construction Engineering and Management
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    • v.10 no.2
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    • pp.26-33
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    • 2009
  • The required level of detail in scheduling depends on the stages in the construction life-cycle. The objective of this study is to provide a Standardized Schedule Model (SSM) with an aim to facilitate the estimating of construction duration in the planning stage. The SSM modularizes work items; establishes relations between preceding and succeeding activities; and calculates approximate construction duration. The estimated duration of the SSM was compared with the detailed duration from the commercial scheduling tool using actual work activities. The difference showed to be ranged between -3.1% and +15%, which demonstrates that the SSM can be feasibly applied to the approximate estimation of construction duration.

Relation between the Shade Hours and the Landscape Tree Growth in the Apartment Housing Areas (공동주택단지내 조경수목의 생장과 피음시간과의 관계)

  • 윤근영;안건용
    • Korean Journal of Environment and Ecology
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    • v.10 no.1
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    • pp.49-57
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    • 1996
  • To figure out the relation between the shade hours and the landscape tree growth in the apartment housing areas, the present sizes and planting positions of 4 tree species in Gwacheon-si apartment housing areas were surveyed. Then, shade hours were analyzed and the data were analyzed by simple linear regression method. As a whole, the R$^{2}$ was too low to generalize the regression equation. Therefore, it was presumed that the gravity of shade hours in landscape tree growth in this sample site was relatively lower than that of any other environmental factors. However, it was presumed that the characteristics of shade intolerant and tolerant tree were turned up, because Pinus strobus showed a low negative correlation with shade housm and Acer palmatum and Magnolia denudata showed a low positive correlation with shade hours generally. And, it was proved that the statistically significant cases were the tree diameter at root collar and tree sidth of Acer palmatum and tree width of Magnolia denudata with shade hours showing a low correlation coefficient less than 0.4.

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Differences of Germination Rate, Degree of Solute Leakage and Water Uptake Rate of Soybean Seeds in Two Storage Periods (저장기간에 따른 콩종실의 발아율이, 용출정도 및 수분흡수율의 차이)

  • 손범영;박금룡;김석동;김수희
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.41 no.1
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    • pp.95-102
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    • 1996
  • This investigation was conducted to investigate if germination rate, degree of solute leakage and water uptake rate of seeds are a meaningful information for the selection criteria among soybean genotypes and to find out their characteristics in the variable temperature and moisture conditions encounted during long-term warehouse storage. Germination rate in soybean sprouting box and petri dish differed largely among genotypes stored for twenty months but there was little difference when stored for eight months. Length of hypocotyl was shorter at twenty months of storage than at eight months. Degree of solute leakage of Paldalkong and Pulmuwon was twice higher than that of SS88038 lines at twenty months of storage. In 30 minutes after imbibition, water uptake rate in all genotypes stored for twenty months was faster than these stored for eight months, and water uptake rate in Paldalkong and Pulmuwon stored for eight months was 1.5 and 2 times faster than in SS88038 lines. In correlation coefficients, the germination ability and emergence exhibited significantly negative correlation with degree of solute leakage at twenty months of storage. Water uptake rate in soybean seeds stored for eight months had highly significant positive correlation with degree of solute leakage in 30 minutes and one hour after imbibition while for twenty months of storage, it had highly significant positive correlation with that in 30 minutes, one hour and three hours after imbibition. In eight months of storage, the number of open micropyle had positive correlation with water uptake rate at 30 minutes after imbibiton. But in seeds stored twenty months, it wasn't correlated with water uptake.

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Project Risk Assessment Through Construction Sequence Analyses for Industrial Plant Construction Projects (산업플랜트 건설 프로젝트의 주요 공정 시퀀스 분석을 통한 리스크 평가)

  • Lee, Kyusung;Choi, Jaehyun
    • Korean Journal of Construction Engineering and Management
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    • v.14 no.4
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    • pp.140-151
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    • 2013
  • In 2011 and 2012, Korean construction firms awarded around $ 64.5. Billion each year from the overseas market in 2011. This contract value accounted for overwhelming portion of total overseas construction contract values, and this growth is expected to continue for the next decade. However, contract scopes awarded to the Korean construction firms mainly involve detailed design and construction phases due to their competitiveness for the construction techniques. In other words, front-end-engineering-design and construction project management are not considered part of core business due to the lack of project management skills and experience. The researchers focused on development of construction sequence model required to improve construction planning and scheduling skills for the Korean construction firms. The model identifies critical work items and the sequence throughout project execution process. In addition, the researchers developed a risk evaluation method by applying fuzzy theory to the critical construction activities for the industrial plant construction projects. Developed methodology will help project practitioners to develop project schedule in a timely and effe ctive manner and evaluate project risks associated with scheduling process for the industrial plant construction projects.

Experimental Study on Electrokinetic Streaming Potential in Micropore Channels of Hollw-Fiber Based on General Helmholtz-Smoluchowski's Principle (일반적 Helmholtz-Smoluchowski 원리에 따른 중공사 미세기공 채널에서의 계면동전기 흐름전위에 관한 실험연구)

  • 전명석;조홍일
    • Membrane Journal
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    • v.12 no.1
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    • pp.41-50
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    • 2002
  • The streaming potential generated by the electrokinetic flow within electric double layer of charged microchannel is applied to determine the zeta potential of hollow-fiber membrane pore by using the general Helmholtz-Smoluchowski equation. The streaming potential is know to provide a useful real-time information on the surface property and the interaction between pore and particles in actual situations and physicochemical conditions. The influence of physicochemical parameters upon the filtration with hollow-fibers has been examined with an in-situ and simultaneously monitoring the streaming potential as well as permeate flux. In particular, the present study examined an experimental method to identify the effect of cake layer which can vary according to the axial position of a hollow-fiber and the progress of membrane fouling by measuring the position-dependent streaming potential. As the latex concentration increases, the permeate flux decreased but the streaming potential increased. The growth of cake layer has been mire developed with increasing latex concentration, however, the effect of surface charges of latexes deposited on the membrane surface leads to increase the streaming potential. With increasing ionic concentration of KCI, both the permeate flux and the streaming potential decrease. The increase of ionic concentration provides a compact cake layer due to the shrinkage of Debye length and the decreased streaming potential results from the weakened ionic flows owing to a thin diffusive double layer.