• Title/Summary/Keyword: Adhesiveness

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Instrumental and Sensory Characteristics of Jelly (젤리의 기계적 및 관능적 물성)

  • Lee, Tae-Whi;Lee, Yoon-Hyung;Yoo, Myung-Shik;Rhee, Kyu-Soon
    • Korean Journal of Food Science and Technology
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    • v.23 no.3
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    • pp.336-340
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    • 1991
  • Correlations among instrumental. sensory parameters and overall preference of jelly texture were studied. Instrumental rheological characteristics of the jelly were measured with a rheometer, and sensory and overall score were measured by sensory evaluation. Instrumental maximum force was correlated to sensory hardness and shortness, and sensory springiness and stickiness were correlated to instrumental springiness and adhesiveness force respectively. Also the most significant instrumental parameters with respect to overall preference were cohesiveness and adhesiveness force with their values being 0.93 and 0.89 repectively. Multiple linear regression resulted in a following equation: overall score = 2.70 + 6.25(cohesiveness) - 0.095(adhesiveness force) with a correlation coefficient of 0.94.

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Correlation between Instrumental Parameter and Sensory Parameter in the Texture of Cooked Rice (쌀밥의 조직감에 대한 기기적 측정값과 관능적 측정값의 상관관계 연구)

  • Choi, Won-Seok
    • The Korean Journal of Food And Nutrition
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    • v.29 no.5
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    • pp.605-609
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    • 2016
  • This study aimed to find the optimum instrumental test conditions for the Texture Profile Analysis (TPA) of cooked rice in order to predict the sensory texture attributes (hardness, adhesiveness, chewiness). Sensory evaluation was performed for three kinds of instant cooked rice with university students in their twenties and the results of the sensory evaluation were compared to instrumental TPA patterns. Using partial least squares regression, the instrumental TPA results at a cross-head speed of 1.0 mm/sec and a compression ratio of 70% proved to be an excellent predictor of the sensory attributes of hardness ($R^2=0.99$) and chewiness ($R^2=0.99$). The results at a cross-head speed of 0.5 mm/sec and compression ratio of 30% provided an excellent model for the prediction of sensory adhesiveness ($R^2=0.83$). In this experimental range, sensory hardness and chewiness showed a high correlation with instrumental TPA parameters (hardness, cohesiveness, adhesiveness, springiness, chewiness) with a high cross-head speed and compression ratio, while sensory adhesiveness showed a high correlation with the TPA parameters with a low cross-head speed and compression ratio.

Sebum Absorption Characteristics of Polymer Microgel-containing Face Powder

  • Lee, Young-Keun;Jin, Fan-Long;Park, Soo-Jin
    • Bulletin of the Korean Chemical Society
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    • v.28 no.8
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    • pp.1396-1400
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    • 2007
  • In this study, poly(iso-butyl methacrylate-co-ethylene glycol dimethacrylate) [poly(iso-BMA-co-EGDMA)] microgel was prepared and used as a face powder additive. The spreading, adhesiveness, and skin reactivity of poly(iso-BMA-co-EGDMA) microgel-containing face powder II were investigated and compared with the same properties of commercially available Silica bead 700-containing face powder I. In the results, the particle size of the poly(iso-BMA-co-EGDMA) microgel was significantly swelled as a result of sebum absorption. Face powder II showed a lower primary irritation index and a higher adhesiveness than did face powder I. Face powder I showed a low sebum absorption ratio and a relatively high rate of sebum absorption, whereas face powder II, contrastingly, exhibited a high sebum absorption ratio and a low rate of sebum absorption, which properties would reduce the phenomena of facial strain and sliminess. These results indicate that poly(iso- BMA-co-EGDMA) microgel has outstanding sebum absorption characteristic and adhesiveness, and thus that it is a good candidate for use as a face powder additive.

PMM for Surface Treatment of Concrete with the Utilization of By-Products

  • Drochytka, Rostislav;Zizkova, Nikol
    • International Journal of Concrete Structures and Materials
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    • v.2 no.1
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    • pp.49-55
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    • 2008
  • The disadvantage of PMM's (polymer-modified mortars) that are currently on the market is the utilization of expensive polymer additives and also the cost of the other components. One of the possibilities how to decrease this price is the effective utilization of waste materials which are very inexpensive in spite of their good properties. The combinations of different degree in polymer adhesiveness and waste secondary raw materials - fly ash - are experimentally verified in the paper. The use of fly ash in adhesive materials for ceramic tiles is limited by unsatisfactory initial adhesiveness to sintered ceramic sherd as a result of a running pozzolanic reaction that lowers the efficiency of polymer additives. On the other hand, the use of adhesive and backfill coating materials for gluing ETICS board insulation materials has brought very good results.

Acoustic Emission Characteristics of Plasma Sprayed Ceramic Coating Layer after Salt Spray (플라즈마용사 세라믹코팅 피막부식재의 음향방출 특성)

  • 김귀식;박경석;홍용의
    • Journal of Ocean Engineering and Technology
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    • v.15 no.3
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    • pp.69-74
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    • 2001
  • This paper was to investigate of a adhesiveness for the plasma sprayed coating materials did salt spray by acoustic emission method in tensile loadings. The powders used for the coating were nickel aluminum composite powder Ni-4.5wt.%Al and titanium dioxide powder $TiO_2$. These powders were coated on a carbon steel S45C by plasma spray method. The result solution was a 5% NaCl and the slat spray times were 2, 5 and 10 hours respectively. The salt solution penetrated into the surface of the substrate through pore of the coating layer built in the process of plasma spay. Corrosion productions formed on the surface of substrate. The adhesiveness between the substrate and the coating layer is weaken by corrosion and the exfoliation initiated chiefly at the corrosion surface of the substrate. The AE events and energy of the corroded coating specimens decreased as the salt spray times increased.

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Effects of Various Reagents on Textural Properties of Soy Protein Gel (대두단백겔의 물성에 미치는 분자결합력 저해 시약의 영향)

  • 배동호;정호선
    • Food Science and Preservation
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    • v.5 no.1
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    • pp.65-71
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    • 1998
  • The changes in gel characteristics of soy protein as a result of various reagents that alter specific interactions which affect the formation and textural properties of gels, were studied. The reagents were added to 15% soy protein solutions prior to heat treatment. The gels were not formed with urea, indicating that hydrogen bonds significantly contributed to the formation and hardness of soy protein gel. Hydrophobic interactions and disulfide bonds compensated for hydrogen bonds and the contributions of electrostatic interactions to gel hardness are relatively insignificant. The farce primarily responsible for gel cohesiveness appeared to be disulfide bonds, because a significant decrease in cohesiveness was found only with the presence of N-ethylmaleimide. Adhesiveness decreased only with the addition of urea, and thus the contribution of hydrogen bonding to adhesiveness of gel could be concluded to be resent. However, adhesiveness was suggested to be interpreted not only wile molecular forces involved in gel formation but also with hydration properties of protein.

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Comparison Study of Physical Properties between Two Silicone Gel Sheets (새로 개발한 실리콘젤시트의 물성에 대한 연구)

  • Yun, Young Mook;Kang, Nak Heon;Kim, Tae Joon
    • Archives of Plastic Surgery
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    • v.35 no.6
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    • pp.659-662
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    • 2008
  • Purpose: Silicone gel sheet(SGS) is used for preventing and treating keloid or hypertrophic scars. Because the product is weak in tear strength and adherence, it requires several replacements, which requires high cost. As a solution for this problem, we developed a new silicone gel sheet, named as Scar Clinic, and confirmed its physical properties. Methods: Tensile strength, elongation rate, adhesiveness, and water vapor transmission rate were experimentally compared between the most commonly used SGS product and the Scar Clinic. Results: The newly developed SGS showed better results compared to the existed SGS in regards to tensile strength, elongation rate, adhesiveness, and water vapor transmission rate. Conclusion: The Scar Clinic showed higher durability and flexibility. It will be a useful product for treating scars clinically.

Acoustic Emission Characteristics of Plasma Sprayed Ceramic Coating Layer after Salt Spray (플라즈마용사 세라믹코팅 피막부식재의 음향방출 특성)

  • 김귀식;박경석;홍용의
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2001.05a
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    • pp.344-349
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    • 2001
  • This paper was to investigate of a adhesiveness for the plasma sprayed coating materials did salt spray by acoustic emission method in tensile loadings. The powders used for the coating were nickel aluminum composite powder Ni-4,5wt.%Al and titanium dioxide powder Ti02. These powders were coated on a carbon steel S45C by plasma spray method. The salt solution was a 5% NaCl and the salt spray times were 2, 5 and 10 hours respectively. The salt solution penetrated into the surface of the substrate through pore of the coating layer built in the process of plasma spay. Corrosion productions formed on the surface of substrate. The adhesiveness between the substrate and the coating layer is weaken by corrosion and the exfoliation initiated chiefly at the corrosion surface of the substrate. The AE events and energy of the corroded coating specimens decreased as the salt spray times increased.

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Scientific Study for the Standardization of the Preparation Methods for Paeksolgi(II) -for the Focus on the Volume of Adding Sugar and Steaming Time- (백설기 조리법의 표준화를 위한 조리과학적 연구(II) -첨가하는 설탕의 양과 찌는 시간을 중심으로-)

  • 한경선;김기숙
    • The Korean Journal of Food And Nutrition
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    • v.10 no.1
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    • pp.60-64
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    • 1997
  • This study attempted to examine the effect on sensory characteristics and texture of Paeksolgi in various volume of adding sugar and steaming time. The most favorite tendency on the quality was over 15% adding sugar and 20 minute steaming time. Evaluation was conducted through objective evaluation firstly and sensory evaluation secondly. The volume of adding sugar was the significant factors which affected the textual characteristics of Paeksolgi. But steaming time and interaction had not affected. In sensory evaluation on the various steaming time Paeksolgi made by steaming time for 20min and over 15% adding sugar showed the most favorite tendency on the overall quality. This condition corresponded to the high level of hardness, adhesiveness, gumminess in comparison with Rheoner measurement. In summary the most favorite factor was 12 hours of soaking time, 10% adding water, 1% of adding salt, over 15% adding sugar, 20 minutes steaming time.

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Review on the Adhesiveness of Consumer Arbitration Agreements: U.S. Laws (소비자 중재합의의 부합계약성에 관한 검토 - 미국법을 중심으로 -)

  • Ha, Choong-Lyong
    • Journal of Arbitration Studies
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    • v.22 no.3
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    • pp.47-69
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    • 2012
  • This paper investigates the U.S. courts'attitudes toward the legal doctrine of adhesion contracts, which have been employed as contract defenses by individual consumers who have entered into consumer arbitration agreements with businesses. Some requirements have been added to the sole adhesiveness of the arbitration clause that can invalidate the arbitration clause, including unconscionability and unreasonable harshness. It seems that the U.S. courts have moved toward a more tightened stance in evaluating the validity of consumer arbitration clauses, favoring consumer arbitration.

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