• Title/Summary/Keyword: shortening

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THE FIBRIN-ADHESIVE SYSTEM IN MUCOSAL GRAFT VESTIBULOPLASTY (조직접착제를 이용한 점막이식 전정성형술)

  • Min, Seung-Ki
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.17 no.2
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    • pp.130-136
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    • 1995
  • Vestibuloplasty are following categories : Mucosal advancement(submucous), secondary epithlization(reepithelization) and grafting vestibuloplasty. Although certain procedures are indicated for alveolar bone loss and sulcus shortening, relapse can occur. Every efforts to minimize or compensate for it is controversy. O'Steen(1970) reported the mucous graft methods that none of vestibular shrinkage and graft contracture. 15patients in mucous graft vestibuloplasty with fibrin adhesive system(Beriplast) were taken in cases of alveolar bone resorption and mucosal shortening due to traumatized alveolar bone defects, senile atrophic alveolar bone, postoperative cyst or tumor resection, edentulous alveolar bone loss, and others. A technique in the use of small piece of palatal mucosa$(1{\times}20mm)$ from the lateral aspect of the palate with adhesive system provided to secure the skin grafts, avoid stent fixation, postoperative patient's comfort and less time-consuming than the standard technique, especially excellent bleeding control.

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Construction Sequence Analysis for Checking Stability in High-Rise Building under Construction (초고층 건물의 시공 중 안정성 검토를 위한 시공단계해석)

  • Kim, Jae-Yo
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2008.04a
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    • pp.618-623
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    • 2008
  • Due to recent trends of the atypical plan shapes and the zoning construction in high-rise buildings, the building stability under construction is arising as an important issue for design and construction plan. To ensure the stability under construction, the differential column shortening and the lateral movements with unbalanced distributions of self-weight of structure members and the load flows before completion of member connections and lateral load resisting system should be checked by construction sequence analysis. This paper presents the scheme of zone-based construction sequence analysis, to check the stability of high-rise building under construction. This scheme is applied to the construction sequence analysis for real high-rise building under construction.

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A ROENTGENOGRAPHIC STUDY ON APICAL ROOT RESORPTION OF HUMAN PERMANENT TEETH (영구치의 치근단흡목에 관한 방사선학적 연구)

  • Kang, Bong Ki
    • The korean journal of orthodontics
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    • v.7 no.1
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    • pp.7-11
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    • 1977
  • The purpose of this study was to investigate the resorption potential in human permanent teeth by analyzing the frequency and the degree of root resorption as revealed by routine intraoral roentgenograms. The following conclusions were obtained: 1) The distribution of root resorptions was as follows; a) 65.3 per cent were no root resorption. b) 7.0 per cent showed questionable root shortening. c) 25.2 per cent were definite root shortening. d) 2.5 per cent showed very severe resorption. 2) The order of susceptibility of teeth to resorption in this study was consistent with other studies. 3) The maxillary teeth showed a much higher incidence (52.2 per cent) than the mandibular teeth (17.1 per cent) 4) The sex ratio of the sample in this study was 1.3 female to 1 male.

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The Meaning of the Shortening Tendency of Women's Chogori in the Latter of Period Chosun (조선후기 여자 저고리 단소화와 비교적 의미)

  • 류재운;전혜숙
    • Journal of the Korean Society of Costume
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    • v.39
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    • pp.5-19
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    • 1998
  • This study aims to analyze the shortening tendency of women's hanbok chogori (upper part of the Korean traditional dress) in the latter period of Chosun in three respects-socially, economically, and aesthetically. First, from the social point of riew, sexual role and social starus were examined. The strict sexual roles between males and females made the latter inferior to the former. The relatively lower sexual role had the woman look receptive and passive and wear a short and narrow kind of chogori. Also, the confusion of the social status system weakened the function of the costumes to differentiate social classes and, consequently, almost all classes wore short chogori. Second, the economic progress in the wake of the commerce-centered positivism at that time helped raise the economic status of the middle and low classes. As a result, with their social and economic status elevated, they tried to wear somewhat luxurious chogori. Third, aesthetically speaking, erotically-look-ing and much-shortened chogori derived from the weakened male-centered Confucian tra-ditional ethics in conflict with the humani-tarian positivism.

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A study for the Development of the Full Logic Deck Mechanism using Concurrent Engineering for the shortening of Product Development Period (동시공학에 의한 Full Logic Deck Mechanism 개발 연구)

  • 이해진;곽영만;박영현
    • Journal of Korean Society for Quality Management
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    • v.29 no.3
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    • pp.138-150
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    • 2001
  • Recently, industrial environments have been drastically changed. Customers require cheaper, better, stronger products more than ever. Thus companies have to satisfy the requirements of customers to be survived in this kind of industrial environments. To cope with these requirements from customers, engineers in industries must accept new paradigm and use some special tools for developing new product. This study has applied a Concurrent Engineering which would be good for shortening of product development period in developing of Full Logic Deck mechanism using in car audio. In this paper, a real case of systematic approach and successful story of Concurrent Engineering application in developing Full Logic Deck mechanism is illustrated.

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Effect of Mechanical Impact Treatment on Fiber Morphology and Handsheet Properties

  • Yung B. Seo;Kim, Dukki;Lee, Jong-Hoon;Yang Jeon
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2001.11a
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    • pp.183-199
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    • 2001
  • Alternative way of shaping fibers suitable for papermaking was introduced. Impact refining, which was done simply by hitting wet fibers with a metal weight vertically, was intended to keep the fibers from shortening and to cause mostly internal fibrillation. Virgin chemical pulp, its recycled one and OCC were used in the experiment. It was noticed from the experiment that impact refining on virgin chemical pulp kept the fiber length and Increased bonding properties greatly, However, in the recycled fibers from the chemical pulp, fiber length and bonding properties were decreased. In OCC, which seems to contain fractions of semi-chemical pulp and mechanical pulp (GP), and which is recycled pulp from corrugated boxes, fiber length and bonding properties were decreased disastrously. We believe recycled cellulosic fibers (recycled chemical pulp and OCC in this case), which went through hornification, were less resistant to the mechanical impact than virgin chemical pulp. For virgin chemical pulp, impact refining allowed no significant fiber length shortening, high WRV, and high mechanical strength.

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Hydrogen Storage Properties of Carbon Nanotube Composites (탄소나노튜브 복합재의 수소저장특성)

  • Ahn, Jung-Ho;Jang, Min-Kyu
    • Journal of Powder Materials
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    • v.15 no.3
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    • pp.188-195
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    • 2008
  • Carbon nanotube (CNT)/$Mg_2Ni$ composites were synthesized to enhance the hydrogen storage properties. The emphasis was made on the effect of different shortening methods of CNTs on the open-tip structure and the resulting properties. The use of open CNTs as a starting material resulted in an enhanced hydrogen properties of CNT/$Mg_2Ni$ composites. Among the employed methods for the shortening of CNTs, wet milling using ethanol was the most efficient, while ultrasonic acid treatment or thermal decomposition resulted in a less hydrogen storage capacity.

Analysis for Column Shortening of RC Frame Structures Considering the Construction Sequences (시공단계를 고려한 RC 프레임의 기둥축소 해석)

  • 곽효경;서영재
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1999.04a
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    • pp.210-217
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    • 1999
  • This paper deals with the analysis for column shortening of RC frame structure considering the construction sequences. The time-dependent effects of concrete are taken into consideration in this study to simulate the actual structural behavior. The stiffness matrix of a beam element is derived on the bases of the layer approach, dividing a section with imaginary layers. Creep and shrinkage strains at each layer are calculated by using the first-order algorithm based on the expansion of creep compliance. Finally, the correlation studies with the purpose of analyzing the time-dependent behavior of building structure are conducted using the analytical model proposed in this study.

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