• 제목/요약/키워드: Seung form

검색결과 1,881건 처리시간 0.046초

Determination of Optical Purity of a-Arylmethylpropionic acds by Normal Phase Liquid Chromatography

  • Min-Chungsik;Jae, Jang-Seung;Lee, Song-Deuk;Park, Seung-Hee;Yun, Jang-Jung;Yun, Jung-Hae;Lee, Keang-Hee;Hae, Jo-Seung;In, Jo-Keang
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.241.2-241.2
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    • 2002
  • A various 2-arylmethylpropionic acds(profen) have been widely used as non-steroidal anti-inllammatory drugs for the relief of acute and chronic rheumatoid arthritis and osteoarthritis. as well as for other connective tissue disorders and pains. Example is fenoprofen. ibuprofen, ketoprolen, and naproxen. All are chiral and, except for naproxen. are marketed in racemic form. Enantioseparations of profens have been of considerable interest because their anti-inflammatory and analgesic effects have been attributed almost exclusively to their (S)-enantiomer. (omitted)

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합성얼음을 이용한 얼음의 두께와 수선면각 변화에 따른 쇄빙상선 저항특성 연구 (Study on Resistance Performance of Icebreaking Cargo Vessel According to Variation of Thickness and Waterline Angle by Using Synthetic Ice)

  • 신병철;김문찬;이승호;이승기
    • 대한조선학회논문집
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    • 제48권2호
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    • pp.134-140
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    • 2011
  • The present paper deals with characteristics of resistance performance according to the variation of synthetic ice thickness and hull form. The resistance test has been conducted with pack ice condition in Pusan National University towing tank. Waterline angle has been chosen as a main parameter for the variation of hull form characteristics, which is the most important factor especially in icebreaking cargo vessel. The serial comparisons of resistance test have been done with the variation of hull form parameter as well as with the different thickness of synthetic ice. The different trend of resistance performances with increasing of waterline angle has been shown at each synthetic ice thickness. The present test results is expected to be confirmed by comparing the test results in ice tank in the near future.

소아 의료시설의 형태결정 인자 및 기본형태 특성에 관한 연구 - 미국의 사례를 중심으로 - (A Study on Influencing Factors and characteristics of Basic Forms of Pediatric Facilities - Focused on the cases in the U. S. A -)

  • 손승환;이성원;박재승
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제11권2호
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    • pp.55-62
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    • 2005
  • This study is to suggest the proper standards of the pediatric facilities. We need to have the medical treatment standard focusing to the architectural concept because the living and medical treatment level and the demand of citizen is increasing. The way of research is mainly referring to USA's hospitals and the patients. This study is for the psychological stability of child. We found the form decisive elements and the basic form characteristic with analysing cases. This elements are emerging to the sociality, privacy, control, recognition and territoriality. We have to improve the satisfaction of the patient through this element. In the future, the role of the improved medical environment will have to be emphasized.

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진공 인터럽터 내부 Shield형상에 따른 전계분포 해석 (Electric field distribution interpretation along a shield form inner vacuum interrupter)

  • 윤재훈;김병철;이승수;임기조;강성화
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 Techno-Fair 및 합동춘계학술대회 논문집 전기물성,응용부문
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    • pp.143-144
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    • 2008
  • this paper describes the electric field distribution interpretation along a shield form inner vacuum interrupter(VI). The equipotential line and electric field in a VI are analysed by a finite element method at various shield form. in result, The electric potentials of end shield form was increased or decreased because it was various the length of shield and between external insulation and source area or fix._end shield. finally shield is how to electric field affect, and advance, and will achieve the optimum design of VI inside shield.

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Bulk graphite: materials and manufacturing process

  • Lee, Sang-Min;Kang, Dong-Su;Roh, Jea-Seung
    • Carbon letters
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    • 제16권3호
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    • pp.135-146
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    • 2015
  • Graphite can be classified into natural graphite from mines and artificial graphite. Due to its outstanding properties such as light weight, thermal resistance, electrical conductivity, thermal conductivity, chemical stability, and high-temperature strength, artificial graphite is used across various industries in powder form and bulk form. Artificial graphite of powder form is usually used as anode materials for secondary cells, while artificial graphite of bulk form is used in steelmaking electrode bars, nuclear reactor moderators, silicon ingots for semiconductors, and manufacturing equipment. This study defines artificial graphite as bulk graphite, and provides an overview of bulk graphite manufacturing, including isotropic and anisotropic materials, molding methods, and heat treatment.

Parametric NURBS Curve Interpolators: A Review

  • Mohan, Sekar;Kweon, Sung-Hwan;Lee, Dong-Mok;Yang, Seung-Han
    • International Journal of Precision Engineering and Manufacturing
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    • 제9권2호
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    • pp.84-92
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    • 2008
  • Free-form shapes which were once considered as an aesthetic feature are now an important functional requirement. CNC industries are looking for a compact solution for reproducing free-form shapes as conventional interpolation models are inadequate, The parametric curve interpolator developed in the last decade has clearly emerged as favorite among its contemporaries in recent years, At present intense research has been done on parametric curve interpolators and interesting developments are reported. Out of the various parametric representations for curves and surfaces, NURBS has been standardized and widely used in free-form shape design. This paper presents a review of various methods of parametric interpolation for NURBS and discusses the salient features, problems and solutions. Recent approaches on variable feedrate interpolation, parameter compensation are also reviewed and research trends are addressed finally.

9.77 Ton급 삼동선의 선형 개발 및 실용화 연구 (A Study for Hull form Development of a 9.77 Ton Class Trimaran)

  • 오세면;이승희
    • 대한조선학회논문집
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    • 제42권6호
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    • pp.710-716
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    • 2005
  • The objective of the present study is to design a hull form of a 9.77 ton class trimaran for use as a Pleasure boat around the bay of Gyounggy. The boat will be made of fiber reinforced plastics and equipped with a 650 hp diesel engine with a conventional water jet propulsion system and the maximum speed be 25 knots after fully loaded. In the present study, the optimal configuration such as relative location of outriggers of the 9.77 ton class trimaran is selected and the resistance characteristics are carefully studied through a series of model tests. The general arrangement of the boat are also considered in the final decision of the hull form.

비정형 콘크리트 패널 생산 시스템 구축 기초연구 (A Basic Study of Production System Development of Free-form Concrete Panels)

  • 손승현;김기호;김선국
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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    • pp.70-71
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    • 2019
  • Glass fiber reinforced concrete (GFRC) is very suitable as a material for free-form concrete panels (FCPs) because of its lightweight, strong, moldable, durable and sustainable properties. GFRC is superior in construction and maintenance compared with materials such as steel, aluminium, titanium, glass and plastic, and is advantageous in cost. However, GFRC is being produced by skilled craftsmen, and still lacks the technology to economically produce high quality FCPs. Currently, there is a technology to automatically and accurately produce FCPs. However, the developed technology can not be applied to the field with simple production technology without production line for mass production. To solve this problem, the purpose of this study is a basic study of production system development of free-form concrete panels. This study introduces the developed FCPs production technology and builds FCP production system for mass production. The results of this study will be used as basic data for the commercial production of FCPs in the future.

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저온환경하에서 단열처리 방법에 따른 단열거푸집의 열적성능에 관한 실험적 연구 (A Experimental Study on Thermal Performance of Insulated Forms with Different Insulating Methods at Low Temperature)

  • 김목규;김형철;최현국;김재영;문영범;이한승
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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    • pp.57-58
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    • 2015
  • In this study, the experimental study on Thermal Performance of Insulated Forms with Different Insulating Methods at Low Temperature. For this study, placing insulated plywood based form between two constant temperature chamber that maintaining 10℃, decrease temperature of one chamber to -10℃ and -20℃. Each of steps, maintaining period of temperature was 1 hour. After placing the form, measure temperature of opposite side of the insulated form. As a result of experiment, temperature difference of rigid urethane was lowest.

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