• Title/Summary/Keyword: texture design

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Biocompatible Material Design Minimizing Hypertrophic Injury and Treatment Effects using a Mini-pig (비대성 흉터를 최소화하는 생체적합성 재료설계와 미니돼지에 대한 치료 효과)

  • Kim, Yong-Hwan;Kim, Jong-Woo;Jin, Seong-Hun;Kim, I-Su;Kang, Myung-Chang
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.16 no.6
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    • pp.95-100
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    • 2017
  • Recently, biomedical-grade texture material gauze has often been used to treat wounds. At this time, it is difficult to remove scratches and pushed gauze; if you remove it with force, the tissue may separate and bleeding may occur again. In this study, we studied a method to apply medical-grade silicone material. Similar to the research result that hypertrophic wounds reduce the thickness of scar marks. Through mini-pig experiments, we evaluated the effects on scar treatment. The test results showed that the silicone cover layer applied to the wound site had a sealing effect on the wound area, skin temperature, and histopathological examination. In conclusion, gel treatment utilizing a biocompatible substance had the effect of minimizing hypertrophic scars.

Quality Characteristics of Rice Cookies Prepared with Stevia rebaudiana Leaf (스테비아(Stevia rebaudiana)잎 첨가 쌀쿠키의 품질 특성)

  • Kim, Dah-Sol;Shin, Jihun;Joo, Nami
    • Journal of the Korean Dietetic Association
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    • v.23 no.1
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    • pp.14-26
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    • 2017
  • The purpose of this study was to determine the optimal recipe of rice cookies with two different amounts of Stevia rebaudiana leaf and grape seed oil, using a central composite design (CCD). In addition, mixing conditions of rice cookies were optimized by sensory evaluation and mechanical and physicochemical analysis using response surface methodology (RSM). RSM was used to obtain 10 experimental points (including two replicates of Stevia rebaudiana leaf and Grape seed oil), and the formulation of Stevia rebaudiana leaf added rice cookies was optimized using rheology. The results of mechanical and physicochemical analysis showed significant values for lightness, redness, yellowness, hardness, spread factor, loss rate, leavening rate, sweetness, moisture, pH, and density (P<0.001), results of the sensory evaluation showed significant values for color, flavor, taste, texture, appearance, and overall quality (P<0.05). As a results, optimal sensory ratio was found to be 1.98 g of Stevia rebaudiana leaf and 37.94 g of Grape seed oil.

Evaluation of homogenized thermal conductivities of imperfect carbon-carbon textile composites using the Mori-Tanaka method

  • Vorel, Jan;Sejnoha, Michal
    • Structural Engineering and Mechanics
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    • v.33 no.4
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    • pp.429-446
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    • 2009
  • Three-scale homogenization procedure is proposed in this paper to provide estimates of the effective thermal conductivities of porous carbon-carbon textile composites. On each scale - the level of fiber tow (micro-scale), the level of yarns (meso-scale) and the level of laminate (macro-scale) - a two step homogenization procedure based on the Mori-Tanaka averaging scheme is adopted. This involves evaluation of the effective properties first in the absence of pores. In the next step, an ellipsoidal pore is introduced into a new, generally orthotropic, matrix to make provision for the presence of crimp voids and transverse and delamination cracks resulting from the thermal transformation of a polymeric precursor into the carbon matrix. Other sources of imperfections also attributed to the manufacturing processes, including non-uniform texture of the reinforcements, are taken into consideration through the histograms of inclination angles measured along the fiber tow path together with a particular shape of the equivalent ellipsoidal inclusion proposed already in Sko ek (1998). The analysis shows that a reasonable agreement of the numerical predictions with experimental measurements can be achieved.

Texture Profile Analysis of Acorn Flour Gels (도토리묵의 물리적 특성)

  • Kim, Young-A;Rhee, Hei-Soo
    • Korean Journal of Food Science and Technology
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    • v.17 no.5
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    • pp.345-349
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    • 1985
  • The textural properties of acorn flour gels were investigated with the variations in the concentraction, storage time and storage temperature by the use of Instron Universal Testing Machine. The experimental design was $3^3$ factorial experiment. TPA curves of acorn flour gels showed two sharp peaks in the first bite and no negative peak. The hardness and brittleness of acorn flour gels were very significantly affected by concentration, storage time and storage temperature. For the height difference between first peak and second peals, the main effects for concentration and storage temperature were very significant and the main effect for storage time was not negligible. For bend, the effect of concentration was more significant than the effect of storage temperature, and storage time effect was negligible. Springiness was affected only by the concentration.

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Optimization of Lock-in Thermography Technique using Phase Image Processing (영상처리에 의한 위상잠금 열화상기법의 최적화 연구)

  • Cho, Yong-Jin;Han, Song-I
    • Journal of Ocean Engineering and Technology
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    • v.26 no.5
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    • pp.25-30
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    • 2012
  • This study examined the use of LIT (lock-in infrared thermography) to detect defects in the welded parts of ships and offshore structures. A quantitative analysis was used with the filtering and texture measurement of image processing techniques to find the optimized experimental condition. We verified the reliability of our methods by applying image processing techniques in order to normalize the evaluations of comparative images that showed a phase difference. In addition, it was found that a low to mid-range intensity of light exposure on the surface showed good results, whereas high exposure did not provide significant results. A lock-in frequency of around 0.1 Hz was satisfactory regardless of the intensity of the light source. In addition, making the integration time of the thermography camera inversely proportional to the intensity of the exposed light source during the experiment provided good results.

Quality Characteristics and Optimization of Rice Cookies Prepared by Substituting Salt with Spergularia Marina L. Griseb (소금대용 세발나물 첨가 쌀쿠키의 품질특성 및 최적화)

  • Kim, Dah-Sol;Lee, Sun-Mee;Joo, Nami
    • Korean journal of food and cookery science
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    • v.32 no.3
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    • pp.279-289
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    • 2016
  • Purpose: This study was to determine the optimal composite recipe of rice cookie with 3 concentrations of Spergularia Marina L. Griseb, sugar and grape seed oil, using central composite design (CCD). Methods: The mixing condition of rice cookie was optimized by subjecting it to sensory evaluation and mechanical and physicochemical analysis using response surface methodology (RSM). Results: The results of mechanical and physicochemical analysis showed significant values for lightness, redness, yellowness, hardness, spread factor, loss rate, leavening rate, density, pH, moisture, sweetness and saltiness (p<0.05), and the results of sensory evaluation showed significant values for color, flavor, taste, texture, appearance and overall quality (p<0.05). As a result, the optimal sensory ratio was found to be 6.40 g of Spergularia Marina L. Griseb, 63.49 g of sugar and 106.19 g of grape seed oil. Conclusion: In conclusion, Spergularia Marina L. Griseb is a good source in natural antioxidant aimed at replacing salt, and it is possible to use in cookie or other food products to substitute salt.

A new flap combination for reconstruction of lower nasal dorsum and supra-tip skin defects

  • Guesnier, Melanie;Claveleau, Xavier;Longeac, Marielle;Barthelemy, Isabelle;Dang, Nathalie Pham;Depeyre, Arnaud
    • Archives of Plastic Surgery
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    • v.46 no.5
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    • pp.480-483
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    • 2019
  • Repairing surgical defects of the nose is still challenging due to its tridimensional shape and its aesthetic concern. Difficulty in reconstructing nasal subunits lies in their contour, skin texture and limited availability of adjacent skin. For lower nasal dorsum and supra-tip regions, we design a new combined local flap as existing local flaps may give disappointing results. This combination flap was performed on two patients for reconstruction of the lower nasal dorsum area after basal cell carcinoma excision. Size of the excision ranged from 20 to 25 mm diameter and safe margins were obtained. The defects were reconstructed with a local flap that combined a rotation nasal flank flap and a V-Y advancement nasolabial flap. Excision and reconstruction were performed in a one-stage surgery under intravenous sedation and local anesthesia. There were no postoperative complications and no flap loss occurred. Aesthetic and functional results after 6 months postoperatively were satisfying without modification of nasal shape. This flap is reliable and offers interesting functional and aesthetic outcomes. It can be considered as a new reconstruction alternative for supra-tip and lower nasal dorsum skin defects performed in a one-stage procedure under local anesthesia.

The Meaning of Joint in Carlo Scarpa's Fragmentary Architecture (카를로 스카르파의 단편적 건축에 있어서 접합의 의미)

  • Lee, Kyung-Jin
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.35 no.8
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    • pp.15-22
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    • 2019
  • According to Kenneth Frampton, the modern architecture starts to be recognized as the poetics of construction and lays a great weight in its value on the technology of making forms and the inherent meaning in the tectonics. The tectonic connotes not only the technological construction of the architecture but also ontological details as the joint of material and texture. The works of Carlo Scarpa are examples to prove the way how the ontological meanings are exposed in the tectonic form of architecture. The purpose of this study was to analyze the connections between Carlo Scarpa's architectural thoughts and visual logic(schemata) from the characteristic of details in his work during the 1950s to 1970s. Through the analysis, the Italian tradition in the architecture is reinterpreted through isolation and break of recollected montages. Carlo Scarpa makes spatial fragments and aspects of reinterpreting in surroundings and situation with the architectural place in Venezia. As a result, the unique details of his craftsmanship provide lessons on how to reinterpret the traditional architecture. In conclusion, Carlo Scarpa's architecture emphasizes the passage of its perceptive experience aspects as a dis-joint of tectonic forms. It may imply the significance of his philosophical approach, especially to the ontological architecture and tectonics.

A Survey on the Management of Clothes and the Perception of Up-cycling Fashion Based on the University Students Majoring Fashion (패션전공 대학생의 의류관리 및 업사이클링 패션에 대한 인식 조사)

  • Jung, Hee Kyeong;Lee, Jeong Ran
    • Fashion & Textile Research Journal
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    • v.22 no.6
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    • pp.803-811
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    • 2020
  • This study investigates the management of clothes and the perception of up-cycling fashion based on university students majoring in fashion. Results based on 124 survey participants are as follows. First, students prioritized design when buying clothes and regarded texture as important for material. In managing clothes, male students emphasized durability; however, female participants checked fluff occurrence. Second, more than half of the respondents knew what up-cycling fashion was; overall, female students were more aware of up-cycling fashion than males. Few students purchased up-cycling clothes; however, many were willing to buy up-cycling clothes for eco-friendliness, which implies that they understood the relations between up-cycling fashion and environment. Third, pertaining to the perception of SPA fashion, students were highly satisfied with the accessibility of SPA brand stores. The group of students who knew up-cycling fashion were more satisfied with SPA brands and indicated o correlation between the cognition of up-cycling brands and preference for SPA brands. Last, in terms of the perception of environment and clothing, university students majoring fashion recognized the need for environmental protection; however, they did not emphasize environment when purchasing or managing clothes.

Comparison of punch life of powder high speed tool steel and high speed tool steel (분말고속도공구강과 고속도공구강의 펀치 수명 비교)

  • Lee, Woo-Ram;Lee, Chun-Kyu
    • Design & Manufacturing
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    • v.16 no.1
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    • pp.9-14
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    • 2022
  • A lot of research is being done on metal materials to improve the lifespan of molded parts. As a result, excellent mold materials have been developed that withstand high hardness at high temperatures and frictional heat generated from high-speed cutting. In this study, the press mold life of powder high-speed tool steel and general high-speed tool steel was compared. Powdered high-speed steel is composed of alloying elements such as tungsten, maldividene, cobalt, chromium, and vanadium in steel, which improves wear resistance compared to high-hardness and high-speed tool steels. The mold parts of both steel types were manufactured in the same way from heat treatment to machining, and the powder high-speed tool steel was 66HRC and the high-speed tool steel was 61HRC. As a result of the experiment, it was observed that the number of punching of powder high-speed tool steel was improved by 40-50%, and powder high-speed tool steel had fewer impurities, uniform texture, and excellent surface structure. It has a microscopic structure.