• Title/Summary/Keyword: Translucency parameters

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The Differentiation Criteria between Greasiness and Shininess on The Face Using Mechanical Evaluation and Image (기계적 평가와 이미지를 이용한 얼굴의 번들거림과 윤기의 분류 기준의 연구)

  • Jang, YoonJung;Kim, Bora;Moon, Tae Kee;Kim, Nam Soo;Lee, Sun Hwa;Lee, Hye-ji
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.44 no.3
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    • pp.231-238
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    • 2018
  • The facial skin condition expresses physical healthy as well as is considered one of important factors for attractiveness. Especially, most people prefer shiny skin. So various cosmetics has been manufactured for expression of shiny skin. However, shiny skin is subjectively evaluated, and difficult to evaluate clear shininess using the existing method in oily skin. Moreover, there is no clear classification criteria between shininess and glossiness, which is assessed negatively in the skin. So there has not been a reference value by mechanical measurement to define and classify shiny skin from greasy skin. In this study, we measured skin biophysical parameters (gloss, hydration, translucency and sebum) and facial images which are selected by volunteers using sensory evaluation. According to the measurement results, the values of gloss, sebum, and translucency were similar in both shiny and greasy skin; the values of sebum and gloss increased, whereas those of translucency decreased. However only skin moisture values statistically increased in shiny skin. In conclusion, we propose objective assessment criteria for classifying shiny and greasy skin using device measurement and quantitative assessment.

Guideliness of the Parameters Using Integrated Test in Down Syndrome Risk Prediction (다운증후군위험도 예측에서 통합선별검사를 이용한 파라미터의 유의성)

  • Lee, Jin-Won;Go, Sung-Jin;Kang, Se-Sik;Kim, Chang-Soo
    • Journal of radiological science and technology
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    • v.39 no.4
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    • pp.549-555
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    • 2016
  • This study was an evaluation of the significance of each parameter through aimed at pregnant women subjected to screening test(integrated test) in predicting risk of Down syndrome. We retrospectively analysed the correlation of risk of Down's syndrome with Nuchal Translucency(NT) images measured by ultrasound, Pregnancy Associated Plasma Protein A(PAPP-A), alpha-fetoprotein(AFP), unconjugated estriol(uE3), human chorionic gonadotrophin(hCG) and Inhibin A by maternal serum. As a result, a significant correlation with NT, uE3, hCG, Inhibin A is revealed with Down's syndrome risk(P<.001). In ROC analysis, AUC of Inhibin A is analysed as the biggest predictor of Down's syndrome(0.859). And the criterion for cut-off was inhibin A 1.4 MoM(sensitivity 81.8%, specificity 75.9%). In conclusion, Inhibin A was the most useful in parameters to predict Down's syndrome in the integrated test. If we make up for the weakness based on the cut-off value of parameters they will be able to be used as an independent indicator in the risk of Down's syndrome screening.

Effects of surrounding and underlying shades on the color adjustment potential of a single-shade composite used in a thin layer

  • Mariana Silva Barros;Paula Fernanda Damasceno Silva;Marcia Luciana Carregosa Santana;Rafaella Mariana Fontes Braganca;Andre Luis Faria-e-Silva
    • Restorative Dentistry and Endodontics
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    • v.48 no.1
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    • pp.7.1-7.10
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    • 2023
  • Objectives: This study aimed to evaluate the surrounding and underlying shades' effect on the color adjustment potential (CAP) of a single-shade composite used in a thin layer. Materials and Methods: Cylinder specimens (1.0 mm thick) were built with the Vittra APS Unique composite, surrounded (dual specimens) or not (simple specimens) by a control composite (shade A1, A2, or A3). Simple specimens were also built only with the control composites. Each specimen's color was measured against white and black backgrounds or the simple control specimens with a spectrophotometer (CIELAB system). The whiteness index for dentistry (WID) and translucency parameters (TP00) were calculated for simple specimens. Differences (ΔE00) in color between the simple/dual specimens and the controls were calculated. The CAP was calculated based on the ratios between data from simple and dual specimens. Results: The Vittra APS Unique composite showed higher WID and TP00 values than the controls. The highest values of ΔE00 were observed among simple specimens. The color measurements of Vittra APS Unique (simple or dual) against the control specimens presented the lowest color differences. Only surrounding the single-shade composite with a shaded composite barely impacted the ΔE00. The highest CAP values were obtained using a shaded composite under simple or dual specimens. Conclusions: The CAP of Vittra APS Unique was strongly affected by the underlying shade, while surrounding this composite with a shaded one barely affected its color adjustment.

The Chilling Injury Development and Quality Characteristics of 'Ooishiwase' Plums (Prunus salicina L.) according to Ripening Stages and Cold Storage Temperature (자두 '대석조생'의 숙기 및 저온저장 온도에 따른 저온장해과 발생 및 품질특성)

  • Cho, Mi-Ae;Hong, Yoon-Pyo;Choi, Sun-Young;Jung, Dae-Sung;Lim, Byung-Sun;Park, Soo-Jeong;Lee, Seung-Koo
    • Food Science and Preservation
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    • v.18 no.5
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    • pp.651-660
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    • 2011
  • This study was conducted to evaluate the quality characteristics of and chilling injury development in 'Ooishiwase' plum fruits after harvest, according to the ripening stage and storage temperature. The fruits were harvested at three ripening stages (60, 80, and >90% skin color) and were then stored at 1, 4, 5, 6, and $20^{\circ}C$ cold-storage rooms for up to 48 days. The fruit quality parameters, respiration patterns, and chilling injury development were monitored during the storage periods and the three days of subsequent ripening at $20^{\circ}C$. The fruits harvested at the 60%-skin-color stage maintained the flesh firmness, color, weight loss, and TA, and their respiration rates and ethylene production were decreased compared with the 80%-or >90%-skin-color fruits, at a lower storage temperature. The major symptoms of chilling injuries in the Ooishiwase plums were gel breakdown, flesh browning, and flesh translucency. These symptoms appeared at all the low-storage-temperature and ripening treatment stages. When the fruits, however, were harvested at a more immature stage and were stored at a lower storage temperature, the chilling injury development decreased. These results show that the development of chilling injury in Ooishiwase plums is related to the climacteric behavior during cold storage.