• 제목/요약/키워드: Nose

검색결과 1,633건 처리시간 0.012초

선단형상이 다른 비상체의 충돌을 받는 콘크리트의 파괴특성 (Failure Properties of Concrete by Projectile Nose Type)

  • 김재필;김규용;김홍섭;김정현;한상휴;이상규
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2015년도 추계 학술논문 발표대회
    • /
    • pp.30-31
    • /
    • 2015
  • High velocity impact of projectile generate local failure such as penetration, scabbing, perforation on concrete. It has been reported that local failure is affected by such as nose shape, mass of projectile. In this study, comparing and weighing the impact failure properties of concrete by high velocity impact test that using spherical nose and flat nose type projectile. As a result, It was considered that scabbing of Flat nose projectile reduced more than spherical nose projectile by dispersion of impact force.

  • PDF

악안면 골격 유형에 따른 비부 형태에 대한 연구 (A STUDY ON THE NOSE PROFILE WITH RESPECT TO THE SKELETODENTAL PATTERN)

  • 태기출;김상철
    • 대한치과교정학회지
    • /
    • 제24권4호
    • /
    • pp.861-869
    • /
    • 1994
  • The purpose of this study was to investigate the relationship of nose profile with respect to skeletodental pattern, by measured and analyzed statistically the lateral cephalograms of 95 females (13 to 30 years old). Tge results were summerized as follows ; 1. The antero-posterior factors of the nose - nasofrontal angle, nasofacial angle, and dorsal length / ala length ratio were different among the malocclusion groups 2. There were no significant correlation between the the vertical nose factors and the skeletal factors 3. The Class I groups had a straight nose profile , the Class II groups had a convex profile ; the Class III groups had a concave profile.

  • PDF

고품질 기능성 물질의 품질관리를 위한 전자코 응용 (Application of Electronic Nose for Quality Control of The High Quality and Functional Components)

  • 노봉수
    • 한국작물학회:학술대회논문집
    • /
    • 한국작물학회 2006년도 한국약용작물학회 공동춘계학술발표회
    • /
    • pp.40-54
    • /
    • 2006
  • It's not easy to detect the high quality and functional compounds for control quality of food materials. The electronic nose was an instrument, which comprised of an array of electronic chemical sensors with partial specificity and an appropriate pattern recognition system, capable of recognizing simple or complex odors. It can conduct fast analysis and provide simple and straightforward results and is best suited for quality control and process monitoring in the field of functional foods. Numbers of applications of an electronic nose in the functional food industry include discrimination of habitats for medicinal food materials, monitoring storage process, lipid oxidation, and quality control of food and/or processing with principal component analysis, neural network analysis and the electronic nose based on GC-SAW sensor. The electronic nose would be possibly useful for a wide variety of quality control in the functional food and plant cultivation when correlating traditional analytical instrumental data with sensory evaluation results or electronic nose data.

  • PDF

노스바 압축도가 삼나무, 편백, 일본잎갈나무 로타리단판의 이활 및 인장강도에 미치는 영향 (Effect of Nose Bar Pressure on Knife Check and Tensile Strength of Veneer from the Log of Japanese Larch (Larix leptolepis Gordon), Cryptomeria(Cryptomeria japonica D. Don.), and Japanese Cypress (Chamaecyparis obtusa Endl.))

  • 현정인
    • Journal of the Korean Wood Science and Technology
    • /
    • 제8권2호
    • /
    • pp.6-8
    • /
    • 1980
  • 일본 잎갈나무, 삼나무, 편백의 로타리단판 절삭 적정 노스바압축도를 얻기 위해서 노스바압축도 5%, 10% 15%의 조건으로 절삭된 단판의 이활, 인장 강도를 시험하여 다음과 같은 결론을 얻었다. 1. 일본잎갈나무 2mm단판의 적정 노스바압축도는 15%이었고, 2. 삼나무 2mm 단판의 적정 노스바압축도는 5%이었으며, 3. 편백 2mm 단판의 적정 노스바압축도는 15%이었다.

  • PDF

고속열차의 선두부 형상이 터널 입구압력파에 미치는 영향 (Effect of Train Nose Shape on the High-Speed railway Tunnel Entry Compression Wave)

  • 김희동;김태호;서태원
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 1998년도 창립기념 춘계학술대회 논문집
    • /
    • pp.596-603
    • /
    • 1998
  • The entry compression wave, which is generated at the entrance of the tunnel, is almost always associated with the pressure transients in the tunnel as well as the impulse noise at the exit of the tunnel. It is highly required to design the train nose shape that can minimize such undesirable phenomena. The objective of the current work is to investigate the effects of the train nose shape on the entry compression wave. Numerical computations were applied to one-dimensional unsteady compressible flow in high-speed railway train/tunnel systems. A various shape of train noses were tested for a wide range of train speeds. The results showed that the strength of the entry compression wave is not influenced by the train nose shape, but the time variation of pressure in the entry compression wavefront is strongly related to the train nose shape. The current method of the characteristics was able to represent a desirable nose shape for various train speeds. Optimum nose shape was found to considerably reduce the maximum pressure gradient of the entry compression wave.

  • PDF

신간선 전두부 디자인의 형상변천 (The Changes of Shinkansen vehicles' nose shape)

  • 김광명;한석우
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2005년도 추계학술대회 논문집
    • /
    • pp.94-100
    • /
    • 2005
  • This paper describes the changes of Shinkansen vehicles' nose shape by increasing train speed and according to the stream of time. As the speed increases, the length of the nose trends to lengthen longer. But the nose length does not increase as speed improves by optimized nose shape to reduce aerodynamic drag and micro-pressure wave in tunnels. Shinkansen vehicles nose shape can be classified into Advanced paraboloid type, Sharp-nosed type, Organic double-edged type and Flat-nosed type. In addition, it trends to be diversified and characterized more and more. In the near future, nose designs will be emphasized by the design concept including identity of each JR company based on optimized aerodynamic shape.

  • PDF

황기건중탕(黃芪建中湯)으로 치료한 소아 비출혈 환자 7례 (7 Cases of Nose Bleeding Child Treated by Hwanggigunjung-tang)

  • 김연수;김난이;지선영;황보민
    • 한방안이비인후피부과학회지
    • /
    • 제32권2호
    • /
    • pp.131-138
    • /
    • 2019
  • Objectives : This study was carried out to investigate the effect of Hwanggigunjung-tang on child with nose bleeding. Methods : We treated 7 nose bleeding patients with allergic rhinitis. We evaluated frequency, duration, amount of nose bleeding. Results : After the treatments objective score of nose bleeding was remarkably decreased. Conclusions : This study suggests that Hwanggigunjung-tang is effective with nose bleeding with allergic rhinitis.

구순열 환자 코변형(cleft lip nose deformity) 영상의 통계적 평가 (Statistical evaluation of the cleft lip nose deformity image)

  • 남기창;김진태;홍현기;나동균;김덕원
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2005년도 심포지엄 논문집 정보 및 제어부문
    • /
    • pp.45-47
    • /
    • 2005
  • Cleft lip is a congenital deformity condition with separation of the two sides of the lip and results in nose deformity. Evaluation of surgical corrections and outcome assessments in nose deformity resulting from the cleft lip depend mainly on doctor's objective judgment. Development of an objective assessment tool in evaluation of the condition and surgical outcome of cleft lip nose deformity patients will help in advancement and evaluation of surgical techniques of cleft lip. Hence, our study aimed on quantitative assessment of a cleft lip nose deformity condition by comparing following parameters gathered from a photographic image of a cleft lip patient: (1) angle difference between two nostril axis, (2) center of the nostril and distance between two centers, (3) overlapped area of two nostrils and (4) the overlapped area ratio of two nostrils. Assessment results of the nose deformity were determined by statistical analysis of evaluation results from three greatly experienced plastic surgeons. In addition, regression model was developed using correlation relationship and factor analysis of parameters from results of the image analysis.

  • PDF

철도차량 전두부의 디자인 트렌드에 관한 연구 (A Study on the Design Trend of Train Nose)

  • 이희엽;홍석기;김창현
    • 한국철도학회논문집
    • /
    • 제13권1호
    • /
    • pp.99-107
    • /
    • 2010
  • 철도차량 전두부의 디자인 트렌드는 사회문화와 철도차량의 상관관계를 통해서 발전되어져 왔다. 철도선진국(영국, 독일, 프랑스, 일본, 한국)의 사회문화와 철도차량의 변천에 따라서 1800년대부터 2008년까지 여섯 개의 시기로 구분하였다. 첫째, 철도차량 전두부의 이미지 스케일, 먼셀 색상환, 디자인 포지셔닝 상에서 디자인 변화를 확인하였다. 둘째, 사회문화를 통한 철도차량 전두부의 디자인 트렌드를 분석하였다. 끝으로 각 국가의 철도차량 전두부의 디자인 트렌드에 관한 연구를 하였다. 그 결과 철도차량 전두부의 디자인 트렌드는 점차적으로 구조적, 실용적, 대중적, 인본위적, 환경친화적, 최첨단의 디자인 트렌드를 보여주고 있다.

구순열 환자 코변형(Cleft Lip Nose Deformity) 영상의 통계적 평가 (Statistical Evaluation of the Cleft Lip Nose Deformity Image)

  • 김진태;남기창;홍현기;나동균;김덕원
    • 대한전기학회논문지:시스템및제어부문D
    • /
    • 제54권8호
    • /
    • pp.517-520
    • /
    • 2005
  • Cleft lip is a congenital deformity condition with separation of the two sides of the lip and results in nose deformity Evaluation of surgical corrections and outcome assessments in nose deformity resulting from the cleft lip depend mainly on doctor's objective judgment. Development of an objective assessment tool in evaluation of the condition and surgical outcome of cleft lip nose deformity patients will help in advancement and evaluation of surgical techniques of cleft lip. Hence, our study aimed at quantitative assessment of a cleft lip nose deformity condition by comparing following parameters gathered from a photographic image of a cleft lip patient: (1) angle difference between two nostril axis, (2) center of the nostril and distance between two centers, (3) overlapped area of two nostrils and (4) the overlapped area ratio of two nostrils. Assessment results of the nose deformity were determined by statistical analysis of evaluation results from three experienced plastic surgeons. In addition, regression model was developed using correlation relationship and factor analysis of parameters from results of the image analysis