• Title, Summary, Keyword: 신장률

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Study on the Characteristics of Pressure by Knitted Fabrics for Foundation (여성 파운데이션용 편포의 압력특성에 관한 연구)

  • Shim Bu-Ja;Lee Yang-Hun
    • Journal of the Korean Society of Clothing and Textiles
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    • v.13 no.2
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    • pp.117-127
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    • 1989
  • 여성 파운데이션용 편포의 압력특성에 관한 문제를 공학적 관점에서 검토해보기 위하여 거들용 편포와, 또한 비교를 위하여 드로우어즈용 편포를 시료로하여 완전강체 및 완전탄성체, 그리고 강체와 탄성체를 동시에 가지는 수압체를 모델로 제작하고, 시료를 고리형태로 만들어 피복시킨후 그 압력을 12시간 동안 연속측정하였다. 이때 시료의 신장정도, 수압체의 탄성체 구성비 등을 여러가지로 달리 하여 그에 따른 압력의 변화를 봄과 동시에 시간경과의 효과도 검토하여본 바 다음과 같은 결과를 얻었다. 1. 강체를 수압체로한 경우는 시료의 신장률 증가에 따라 압력이 거의 직선적으로 증가하였고, 그 정도는 거들의 재료가 드로우어즈의 재료에 비하여 훨신 크게 나타났다. 2. 수압체의 탄성체구성비가 증가할수록 신장률 증가에 따른 시료의 실질신장률의 증가 경향이 둔화되어, $40\%$신장률의 경우는 그 이전보다 오히려 감소하는 경향을 나타내었다. 3. 수압체에 탄성체가 포함된 경우는 매우 적은 압력을 나타내었으며, 시료 신장률의 증가에 따른 변화도 매우 적게 나타남으로써 시료 신장률이 클수록 강체수압체에 대한 압력과의 차이가 더욱 커지게 됨을 알 수 있었다. 그러나드로우어즈 재료의 경우는 탄성체가 받는 부담은 크지 않은 것으로 나타났다. 4. 압력의 경시변화는 초기의 압력분포 안정화 과정을 제외하고는 12시간까지 어떤 경우에도 크게 나타나지 않았다.

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Effects of processing conditions on tensile properties and color of Alaska Pollack meal protein isolate film (가공조건이 명태어분단백질 필름의 인장강도와 색에 미치는 영향)

  • YOU Byeong-Jin;SHIM Jae-Man
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.33 no.5
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    • pp.418-422
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    • 2000
  • The tensile properties and color of fish meal film under various processing conditions were measured to obtain basic data for biodegradable Alaska Pollack meal protein isolate (APMPI) film. The tensile strength and the elongation of APMPI film were increased with casting volume of APMPI solution but those of APMPI film were weakened with the addition of glycerol amount as well as reduction of pH values. In case of adding various plasticizer, the tensile strength of film was increased in order as follows: sorbitol, polyethylene glycol and glycerol. The elongation was increased in order of polyethylene glycol, sorbitol and glycerol. The tensile strength of film increased with increment of APMPI concentration, but the elongation of film was not affected by APMPI concentration. The tensile strength of APMPI film was decreased with the increment of relative humidity but its elongation was increased with the increment of relative humidity, Not only lightness and yellowness of film added with sorbitol but also redness and total different color of film added with polyethylene glycol showed the highest value in Hunter color system.

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For white Hair Cover for Chemical Hair Dye Treated Hair Cosmetic Analysis (백모(白毛) 커버(cover)용 화학염모제 처리 모발의 미용학적 분석)

  • Oh, Jung-Sun;Park, Jang-Soon
    • Journal of the Korea Convergence Society
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    • v.10 no.6
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    • pp.281-286
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    • 2019
  • Appearance is a means of competitiveness for modern people, and one of the factors that harms the desires of modern people is white hair. For the modern man who needs to express beautiful appearance to others by covering white moth, we performed hair analysis after white moth hair dye treatment. The maximum modulus and tangential modulus according to the maximum load, maximum tensile strength, maximum elongation, breaking load, fracture strength, elongation at break, and evaluation interval between 1N-3N experimental group and control group of 1N-Respectively. Maximum load, maximum tensile strength, breaking load and breaking strength tended to be larger than those of the control group, while the maximum elongation and breaking elongation were the highest in the control group and the elongation decreased with the experimental group treatment. The maximum modulus and tangential modulus of the 1N-3N test group were higher than those of the control group at 0~0.15 and 0.15~2.5, respectively. Based on the study on the cosmetic changes of the hair before and after the treatment, it can be used as a basic data to select the correct oxidative hair dye product, the proper amount of application and the time to leave.

고리원자력1호기 조사핵연료의 제원거동에 관한 연구

  • 구대서;전용범;김은가
    • Proceedings of the Korean Nuclear Society Conference
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    • pp.693-698
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    • 1995
  • 원자로 조사 핵연료의 제원거동을 조사하기 위하여 고리원자력1호기 핵연료(평균연소도:17,000-38,000MWD/MTU, 농축도: 2.122-3.199 wt.%) 대한 제원을 측정하였다. 핵연료 연소도에 따른 핵연료봉의 길이신장률과 집합체 길이신장률이 각각 0.4-0.6sc, 0.1-0.2%였다. 조사 핵연료의 길이신장과 핵연료 집합체의 휨은 주로 핵연료 연소도에 의존하였으나 핵연료집합체의 비틀림은 핵연료 연소도와 거의 무관하였다.

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5%의 경제성장과 7%의 세계교역신장률 예상

  • Korea Optical Industry Association
    • The Optical Journal
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    • pp.14-17
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    • 2006
  • 한국 산업연구원은 2006년도 우리나라의 거시경제를 전망했다. 전 적인 자료는 산업연구원에서 출처했고, 일부 자료는 한국은행에서 발표한‘2006년 경제전망’에서 출처한 내용임을 밝힌다. 한국은행은 2006년 한 해의 세계경제를 양호한 성장세로 보고 있는 가운데, 2005년 성장률보다 다소 낮아지겠지만 과거 평균치(1995~2004년 3.8%)보다는 높은 4%정도 성장을 예상하고 있으며, 세계교역신장률은 2005년과 비슷한 7%정도로 예상하고 있다.

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Effects of Extracting Conditions on the Physical Properties of Fish Meal Protein Isolate Film (어분단백질 필름의 물리적 특성에 미치는 어분단백질 추출조건의 영향)

  • 유병진;심재만
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.3
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    • pp.494-499
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    • 2001
  • To determine optimal conditions for preparing protein isolate film from fish meal, the water vapor permeability (WVP), tensile properties and solubility of fish meal proteinisolate (FMPI) film were measured. FMPI was extracted from fish meal under conditions of various extraction times at $60^{\circ}C$. Extracting time little affected to WVP of FMPI film. The film added with glycerol as plasticizer showed higher WVP than sorbitol added. As extraction time increased up to 1 hr, tensile strength and elongation were increased. While in more extracting time than 1 hr, increasing extracting time made tensile strength and elongation showed negative correlations. The correlation of soluble protein amount and tensile strength showed higher value ($r^{2}=0.83$) than that of elongation ($r^{2}=0.62$).

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Experimental Study on Edge Flame Instabilities in Solid Rocket Combustion (고체로켓연소에서 에지화염 불안정성에 대한 실험적 연구)

  • Hwang Dong-Jin;Park Jeong;Kim Jeong-Soo;Kim Sung-Cho;Kim Tae-Kwon
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • pp.279-282
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    • 2006
  • Experiments in low strain rate methane-air counterflow diffusion flames diluted with $CO_2$ have been conducted to investigate the flame extinction behavior and edge flame oscillation The critical mole fraction at flame extinction is examined in terms of velocity ratio and global strain rate. Onset conditions of the edge flame oscillation and the relevant modes are also provided with global strain rate. It is observed that flame length is intimately relevant to lateral heat loss, and this affects flame extinction and edge flame oscillation considerably. Edge flame oscillations are categorized into three: a growing-, a decaying-, and a harmonic-oscillation mode.

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Effects of Silica-Silane for CIIR Vibration Isolation Compound upon Increased Mechanical Properties (실리카-실란이 클로로부틸 방진고무 복합소재의 기계적 물성 증가에 미치는 영향)

  • Kim, Sung Min;Kim, Kwang-Jea
    • Polymer Korea
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    • v.39 no.1
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    • pp.107-113
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    • 2015
  • The effects of silica-silane in CIIR vibration isolation compound were investigated regarding mechanical and dynamic properties. Addition of silica-silane in the compound resulted in higher tear resistance strength and elongation at break than the control, which was increased by 13% and 14%, respectively. Other values such as tensile strength and hardness did not show significant changes. Viscoelastic property results supported that the improvement of tear resistance strength and elongation at break resulted from the formation of 3-dimensional network structure between silica and CIIR. The mechanism of the tear resistance strength and elongation at break improvement was discussed.

Physical Properties of Mixed ${\kappa}/{\lamda}$- and ${\kappa}/{\iota}$-carrageenan Films ((${\kappa}/{\lambda}$${\kappa}/{\iota}$-carrageenan 혼합 필름의 물성)

  • Han, Yun-Jeong;Kim, Suk-Shin
    • Korean Journal of Food Science and Technology
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    • v.40 no.1
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    • pp.42-46
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    • 2008
  • The physical properties of ${\kappa}/{\lamda}$- and ${\kappa}/{\iota}$-carrageenan films, mixed with ${\lamda}$- or ${\iota}$-carrageenan (${\kappa}:{\lamda}$ or ${\kappa}:{\iota}$ = 2:1, 1.5:1.5, 1.2:1.8) and with polyethylene glycol, were compared to those of ${\kappa}$-, ${\lamda}$-, or ${\iota}$-carrageenan films. The tensile strengths of the ${\kappa}/{\lamda}$- and ${\kappa}/{\iota}$-carrageenan films decreased with increasing mixing ratios of ${\kappa}/{\lamda}$- or ${\kappa}/{\iota}$-carrageenan, respectively, and were lower than those of the ${\lamda}$- and ${\iota}$-carrageenan films. The elongations and water vapor permeabilities of the ${\kappa}/{\lamda}$- and ${\kappa}/{\iota}$-carrageenan films increased with increasing mixing ratios of ${\lamda}$- and ${\iota}$-carrageenan, respectively, and were higher than those of the ${\lamda}$- or ${\iota}$-carrageenan films.