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Effect on Plant Growth, Fruit Elongation and Quality by Rootstock Sort of Oriental Melon (Cucumis melo L. var. makuwa Makino) (대목의 종류가 참외의 생장, 과실비대 및 품질 미치는 영향)

  • Shin, Yong-Seub;Seo, Young-Jin;Yeon, Il-Kweon;Do, Han-Woo;Lee, Ji-Eun;Choi, Chung-Don;Park, So-Deuk;Kim, Byung-Soo
    • Journal of Bio-Environment Control
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    • v.15 no.4
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    • pp.358-363
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    • 2006
  • Results on growth and fruit elongation and quality by rootstock sort of oriental melon were followed; Growth of upper part of oriental melon was faster grafted seedlings than self-root seedlings and among grafted seedlings, Elite and Shintozoa rootstocks were better than Hongtozoa. Growth of Elite and Shintozoa rootstocks, stem length and leaf number, were laster after 30 days of seedling transplant. Fruit elongation had no difference in rootstocks sort. Fruit weight was higher Elite and Shintozoa grafted seedlings than self-root seedlings but soluble solid contents of fruit was higher self root seedlings, $13.9^{\circ}Brix$, than Elite grafted seedlings, $12.5^{\circ}Brix$.

Studies on the Grafting of the Magnolia grandiflora L. (III) (태산목(泰山木)의 접목(接木)에 관(關)한 연구(硏究)(제(第)III보(報)))

  • Lee, Jyung Seuk
    • Journal of Korean Society of Forest Science
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    • v.26 no.1
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    • pp.49-55
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    • 1975
  • This study was carried out to find out the proper method of grafting of Magnolia grandiflora L. Magnolia kobus DC. was used as stocks and the modified veneer grafting method in which a flap was attached to the cut surface of scion was adopted. And also the environment of the grafting beds was controlled for giving optimum humidity (90-100%) and temperature ($20-25^{\circ}C$). The results are summarized as follows: 1. Two year-old seedlings of M. kobus were best as stocks for grafting of M. gantiflora. 2. The modified veneer grafting which brought the successful result of 43 to 89.5 percent found to be very efficient method. 3. The environmental control made of vinyl tunnel and screen (lath) was very effective to attain to the excellent result of 89 percent. 4. For scions, one to two year-old branches with well developed winter buds collected just before the time of grafting gave the best results. 5. The optimum season for grafting in Kwangju districts was 15 to 20, April.

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Integrating the Hoek-Brown Failure Criterion into the Holmquist-Johnson-Cook Concrete Material Model to Reflect the Characteristics of Field Rock Mass in LS-DYNA Blast Modeling (LS-DYNA 발파 모델링에서 현장암반의 특성을 반영하기 위한 Hoek-Brown 파괴기준과 Holmquist-Johnson-Cook 콘크리트 재료모델의 접목)

  • Choi, Byung-Hee;Sunwoo, Choon;Jung, Yong-Bok
    • Explosives and Blasting
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    • v.38 no.3
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    • pp.15-29
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    • 2020
  • In this paper the Hoek-Brown (HB) failure criterion is integrated into the Holmquist-Johnson-Cook (HJC) concrete material model to reflect the inherent characteristics of field rock masses in LS-DYNA blast modeling. This is intended to emphasize the distinctive characteristics of field rock masses that usually have many geological discontinuities. The replacement is made only for the static strength part of the HJC material model by using a statistical curve fitting technique, and its procedure is described in detail. An example is also given to illustrate the use of the obtained HJC material model. Computation is performed for a plane strain model of a single-hole blasting on a field limestone by using the combination of the fluid-structure interaction (FSI) technique and the multi-material arbitrary Lagrangian Eulerian (MMALE) method in LS-DYNA.

Improvement of Six Sigma DMAIC Processes by Applying Lean Six Sigma Theory (린식스시그마의 개선영역을 통한 식스시그마 DMAIC 프로세스의 발전 방안)

  • Kwon, O-Bin;Lee, Seung-Hyun;Son, Jae-Ho
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2008.11a
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    • pp.551-556
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    • 2008
  • Six Sigma keeps its continuous change in terms of its strategies and methodologies for 20 years since it is introduced in the industry Developing innovative business management strategies creating a higher synergy effect has been Pursued by combining Six Sigma and different business strategies. In fact, various research studies have been performed for grafting lean production theory with Six Sigma concept. Specifically, the companies which obtained positive results from the applications of Six Sigma are trying to adopt Lean Six Sigma theory for their business strategies. However, the research studies or the applications of Lean Six Sigma are insufficient in the construction industry compared to the other industries such as manufacturing. In order to deal effectively with this issue, this research study suggests the improved and restructured Six Sigma DMAIC processes by embodying the existing Six Sigma DMAIC processes applied on construction projects and improving them through the improvement territories of Lean Six Sigma studied in advance.

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Design of Crank Drive System Based on Gait Pattern for Stand-up Bicycle (보행패턴을 접목한 직립주행 자전거용 크랭크 구동장치의 거동분석)

  • Hyeong, Joonho;Roh, Jongryun;Kim, Sayup
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.41 no.10
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    • pp.991-996
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    • 2017
  • Gait stability is partly characterized by an extended stance phase that comprises 60 of the gait % cycle. In this study, a gait pattern was employed for a crank drive system that allows for stable lower limb kinematics during stand-up cycling. A quick return mechanism was applied to the crank system to allow for a slow rotation of the crank during the stance phase and for a quick return during the swing phase. Design parameters for the quick return crank mechanism were defined, and kinematic simulations were performed to understand the behavior of the mechanism. To evaluate the design, an experimental instrument was fabricated, and the cycling motion was analyzed. The results indicated that this new drive system can stabilize the center of mass of the user. This study can contribute to the development of a stand-up bicycle that allows for more comfortable leg kinematics.

A New Gymnocalycium mihanovichii 'Gohong' with Bright Red Color (밝은 진적색 비모란 선인장 '고홍' 육성)

  • Park, Pil Man;Jeong, Myeung Il;Kim, Young Jin;Kim, Won Hee;Lee, Eun Kyung;Kim, Seung Tae;Yoo, Bong Sik
    • FLOWER RESEARCH JOURNAL
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    • v.17 no.3
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    • pp.197-200
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    • 2009
  • A new grafted cactus cultivar, G. 'Gohong', was developed by crossing 'DR' line with dark red color and G. 'Seolhong' with dark red color in 2004. It grew for 6 months after grafting in vitro and culturing at 100 mL test tube. After grafting and planting in greenhouse in 2005, various characteristics were evaluated three times until 2008. It has flat-round shape and dark red skin. In addition, it has 8 to 10 ribs and gray and straight spines on the body. The diameter of it was 44.1 mm after 10 months. It grew bigger and faster comparing with G 'Seolhong' cultivar. The ability of propagation in G. 'Gohong' is similar to that of G. 'Seolhong' producing approximately 12.1 daughter globes for 10 months after planting.