• Title/Summary/Keyword: 기계적이음

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중수로용 개량핵연료(CANFLEX) 피복관의 기계적 설계

  • 심기섭;박광석;석호천
    • Proceedings of the Korean Nuclear Society Conference
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    • 1995.05a
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    • pp.699-704
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    • 1995
  • CANFLEX 핵연료다발은 구조적 설계면에서 기존 핵연료다발과 큰 차이가 나도록 설계되어 있으므로, 핵연료 피복관 설계도 기존 핵연료 피복관 설계와 당연히 달라진다. 여기에서는 CANFLEX 핵연료 피복관의 기계적 설계 요건과 그 설계제원 해석을 통해 수행한 설계 타당성 검토 결과를 기술한다.

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찹쌀가루의 상태가 경단의 품질 특성에 미치는 영향

  • 김기숙
    • Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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    • 2003.10a
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    • pp.216.1-216
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    • 2003
  • 본 연구에서는 시판 찹쌀가루와 실험실에서 제조한 찹쌀가루를 사용하여 만든 경단의 품질특성을 관능검사와 기계적인 측정을 통하여 비교함과 동시에 실험실에서 제조한 가루의 경우에는 찹쌀가루의 냉동저장이 경단의 품질특성에 미치는 영향을 검토하였다. 또한 경단제조후 보관온도와 시간경과에 따른 품질특성의 변화도 기계적인 측정을 통하여 살펴보았다.

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Microcantilever를 이용한 나노바이오/화학 센서

  • 김태송
    • Ceramist
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    • v.7 no.3
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    • pp.48-54
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    • 2004
  • 반도체 집적화 공정 기술을 바탕으로 기계적 구조물(Micromachined mechanical structure)구현을 가능하게 한 Microelectromechanical systems (MEMS) 기술은 최근 들어 새로운 연구분야로서 크게 각광받고 있다. 이러한 MEMS 기술은 자동차, 산업, 의공학, 정보과학 등에 폭넓게 응용되고 있으며 실리콘 가공 기술 및 미세전기소자 (Microelectronics) 기술이 융합되어 전기$.$기계적인 미세소자를 제작하는데 널리 이용되고 있다. (중략)

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Synthesis and Microstructure of Ti-B-N by a PECVD technique

  • Hong, Yeong-Su;Gwon, Se-Hun;Choi, Ji-Hwan;Kim, Kwang-Ho
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2009.10a
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    • pp.167-167
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    • 2009
  • PECVD를 이용하여 Ti-B-N을 증착하여 B 함량에 따른 미세구조 및 기계적 특성을 평가하였다. B의 함량은 미세구조 및 기계적 특성에 큰 영향을 미치는 것을 확인하였다.

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Prediction of Sensory Properties for the Stirred-type Fruit Yogurts by Instrumental Measurements (기계적 측정에 의한 호상요구르트의 관능특성 예측)

  • Oh, Se-Jong;Sim, Jae-Hun;Hur, Jae-Kwan;Shin, Jung-Gul;Kim, Sang-Kyo;Baek, Young-Jin
    • Korean Journal of Food Science and Technology
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    • v.25 no.6
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    • pp.620-625
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    • 1993
  • This experiment was carried out to predict the sensory properties of yogurt by instrumental methodology. Sensory attributes such as viscosity, mouth-feel, taste and quality were investigated. Instrumental parameters were measured with refractometer, viscometer, consistometer and rheometer. Sensory data showed that viscosity of peach yogurt was higher than that of strawberry and tropical-fruit-mixed (TFM) yogurts (p<.05). All instrumental parameters of peach yogurt were higher than those of strawberry and TFM yogurts, except cohesiveness and elasticity (p<.05). Viscosity measured by panelists was significantly correlated with instrumental viscosity, consistency, hardness, adhesiveness and gumminess in the fruit yogurts (p<.05). But mouth-feel and quality of yogurts showed poor relationships with instrumental parameters. The effective instrumental parameters for predicting sensory viscosity ($Y_{1}$) of yogurts were consistency ($X_{1}$), viscosity ($X_{2}$) and cohesiveness ($X_{3}$). And those for predicting mouth-feel ($Y_{2}$) were consistency. The estimated regression equations were as follows; $Y_{1}=4.968-0.0486X_{1}+0.00012X_{2}+0.0348X_{3},\;Y_{2}=5.701+0.0154X_{1}$.

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Arthroscopic Treatment of Osteoarthritis of the Knee(Comparison of the groups with and without mechanical symptom) (슬관절 퇴행성 관절염의 관절경적 치료 - 기졔적 증상이 있는 군과 없는 군과의 비교 -)

  • Kim Cheol-Ho;Lim Chang-Kyun;Cho Seong-Woo;Kim Gi-Hyung;Moon Jin-Woong
    • Journal of Korean Orthopaedic Sports Medicine
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    • v.2 no.2
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    • pp.149-152
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    • 2003
  • Purpose: The purpose of this study is to evaluate the clinical results for the treatment of osteoarthritis of the knee by arthroscopic procedure according to presence or absence of mechanical symptoms. Materials and Methods: We studied sixty patients (60 knees) who underwent arthroscopic procedure for the treatment of osteoarthritis of the knee from October,2000 to January,2002. The average follow up period was 15 months(12-30 months). We evaluated the mechanical symptoms by simple radiographs, history taking and physical examination. We analysed the clinical results by Baumgaertner's scale. Results: The Baumgaetner's score improved from 3.1 preoperatively to 8.1 postoperatively in the group with mechanical symptoms, whereas the scores in the group without mechanical symptom improved from 3.5 preoperatively to 5.4 postoperatively. The patients with mechanical symptoms were satisfied more than the patients without mechanical symptoms. Conclusion: The arthroscopic surgery could be one of good alternative treatment methods for the osteoarthritis of the knee with mechanical symptoms . But, more than these patients will be needed for further evaluation.

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The Effects of Mechanical Stimulation using Graston on Changing Trigger Point Pressure Pain Threshold and Muscle Tone of the Same Spinal Segment in Neck Disk Patient (목 디스크 환자에게 그라스톤을 이용한 기계적 자극 시 동일 척수 분절의 통증 유발점 압통 역치 및 근 긴장도에 미치는 영향)

  • Kim, Do-Hyung;Lee, Byoung-Hee
    • The Journal of the Korea Contents Association
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    • v.19 no.10
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    • pp.198-205
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    • 2019
  • The purpose of this study was to identify whether cutaneous sensory (CS) changes induced by mechanical intervention(MI) increases the trigger point threshold and muscle tone of the same spinal segment to neck disc patients. Thirty persons with Neck disc patients were recruited in this experiment. The subjects consisted of 10 men and 20 women. The mechanical stimulus group induced CS changes for 5 minutes using the Graston instrument and the control group received no action. The CS changes were estimated by using the Von Frey Filament, PPT changes were measured by using the pressure threshold meter and msucle tone changes were measured by using Myotone pro. CS threshold increased significantly when MI was applied (p<0.05). On the same spinal segment, increases in the right infraspinatus PPT and muscle tone was observed (p<0.05) and decreases in the right trapezius PPT was observed(p<0.05). However, the PPT and muscle tone changes in other muscles were not significantly different. Furthermore, the control group CS, PPT and muscle tone were not significantly different. As a result, CS changes induced by MI make to change PPT and muscle tone on the same spinal segment. Therefore, application of MI to the same spinal segment may be of clinical significance as a new rehabilitation method for increasing pain threshold, muscle tone and pain control in neck disc patients.

A Statistical Analysis on the Chemical Compositions & Mechanical Properties of Weathering Steels (내후성강재의 화학성분 및 기계적성질에 관한 통계적 분석)

  • Kyung, Kab Soo;Kwon, Soon Chul
    • Journal of Korean Society of Steel Construction
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    • v.15 no.2
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    • pp.147-157
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    • 2003
  • The application in steel structures is increasing the mill sheet for the weathering steels by minimum maintenance cost in a life cycle cost. These have been collected and statistically analyzed to investigate chemical compositions, mechanical properties, weldability indices, weathering index and impact absorbed energy. From this study, although the band of dispersion in chernical compositions, mechanical properties and impact absorbed energy of the weathering steels appeared a little larger, the results revealed that these values have adequately satisfied the standard values of the Korean Standard. Furthermore, it was found that the weldability indices and the weathering index for the weathering steels have respectively satisfied the value prescribed by the Japanese Highway Specification and ASTM.

Estimation of mechanical damage by minority carrier recombination lifetime and near surface micro defect in silicon wafer (실리콘 웨이퍼에서 소수 반송자 재결합 수명과 표면 부위 미세 결함에 의한 기계적 손상 평가)

  • 최치영;조상희
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.9 no.2
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    • pp.157-161
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    • 1999
  • We investigated the effect of mechanical back side damage in Czochralski silicon wafer. The intensity of mechanical damage was evaluated by minority carrier recombination lifetime by laser excitation/microwave reflection photoconductance decay ($\mu$-PCD) technique, wet oxidation/preferential etching methods, near surface micro defect (NSMD) analysis, and X-ray section topography. The data indicate that the higher the mechanical damage intensity, the lower the minority carrier lifetime, and NSMD density increased proportionally, also correlated to the oxidation induced stacking fault (OISF) density. Thus, NSMD technique can be used separately from conventional etching method in OISF measurement.

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