• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.525-526
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• 2006

The products designed by human sensibility and ergonomics are given good impression. Especially the touch feeling on the human skin is very useful sensibility for quality of products. Elasticity and viscosity of human skin is very important element in product design based on ergonomics. In this paper, we describe a sophisticated method for measurement of dynamic viscoelasticity characteristics of human skin. For this measurement, we developed a measurement system assembled with load cell, actuator, amplifier and data acquisition system. The $MATLAB^{TM}$ is used to analyze the data and fit a approximation curves.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.35 no.1
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• pp.1-9
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• 2009

South Asian's growing obsession with fair skin has made the cosmetic industry into a multibillion-dollar trade over the last decade alone. With reports of toxicity and potential mutagenicity of conventional skin lightening agents, cosmetic industries are looking for plant-based skin whitening formulations. In this review some potential depigmentation agents from South Asian region are discussed, including their historical background, biochemical characteristics and recent findings on their depigmenting activity.

• Journal of Veterinary Clinics
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• v.25 no.6
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• pp.466-470
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• 2008

The purpose of this study is to investigate whether the effects of topically applied petrolatum and glycerin on the barrier repair of acetone-induced skin damage in 6 beagle dogs. To confirm the effects of petrolatum and glycerin on acetone disrupted skin models, we performed to evaluate the characteristics of transepidermal water loss and SC hydration and scanning electron microscopic observations. TEWL and SC hydration measurements were carried out 3, 6, 12, 24, 48h after applying petrolatum and glycerin during recovery from acute disruption. Our results showed that there were some different effects between petrolatum and glycerin on the acetone damaged skin such as barrier function repair process and SC hydration status. The results indicate that the significant improvement could be observed in glycerin apply more than petrolatum after acetone damages, and further study will be required.

• Journal of the Korean Applied Science and Technology
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• v.25 no.2
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• pp.123-129
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• 2008

Transdermal therapeutic system(TTS) is often used as the method of drug dosage into the epidermic skin. Natural polymer were selected as ointment material of TTS. We investigated the permeation of natural polymer ointment containing drug in rat skin using horizontal membrane cell model. Permeation properties of materials were investigated for water-soluble drug such as Nicotinic acid N-oxide in vitro. These results showed that skin permeation rate of drug across the composite was mainly dependent on the property of ointment base and drug. Proper selection of the polymeric materials which resemble and enhance properties of the delivering drug was found to be important in controlling the skin permeation rate. This result suggests a possible use of natural polymer ointment base as TTS of antihyperlipoproteinemic agent.

• Applied Biological Chemistry
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• v.36 no.4
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• pp.290-295
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• 1993

In order to utilize effectively fish skin from fish processing, characteristics of the yellowfin sole and dover sole skins were investigated. In the yellowfin sole, the crude protein content and yield of fish skin used for the preparation of gelatin were 22.3% and 11.3%, respectively and in the dover sole, 17.2% and 8.9%, respectively. In the yellowfin sole skin, the soluble and insoluble collagen occupied 66.1% and 33.9%, respectively and in the dover sole skin, 78.8% and 21.1%, respectively. No difference in the amino acid composition between soluble and insoluble collagen was detected. The sum of proline and hydroxyproline content in the collagen extracted from fish skin was lower than that of those from pork skin or bone. The molecular weight of the two major subunits from the soluble collagen in the yellowfin sole skin were found to be 143 KDa and 202 KDa. Those in the dover sole skin were 142 KDa and 207 KDa. The physico-chemical properties such as the melting point and gelling point of yellowfin sole skin gelatin were superior to those of dover sole skin gelatin.

• Journal of the Korean Society of Clothing and Textiles
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• v.19 no.1
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• pp.142-148
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• 1995

In this study, FVM (Finite Volume Method) which is one of the 2-dimensional numerical approach has been conducted to anticipate the temperature distribution between skin and clothes by the change of air temperature and fabric characteristics including fabric thickness. Several experimental works have been done to understand the thermal insulation effect (If fabrics on a human body by measuring the averaged temperature in the air layer between skin and clothes or by measuring the thermal resistance of fabrics. However, the formal method is inconvenient to measure the temperature distribution in the air layer to evaluate the insulation rate of the clothes on the skin because the real size of the clearance between skin and the clothes is too small to place the temperature sensor, and in the Tatter method the relationship between human body and the fabrics are ignored. However, the numerical method will be very effective and economical way to evaluate the insulation efficiency of clothes when the computational result is in the reliable range. As the result of this study, the temperature change in the sir layer between skin and clothes was linear to the fabric thickness and this result coincides with many previous experimental results. Moreover, it is possible to predict the optimum fabric thickness for the best thermal insulation in the air layer between skin and clothes.

• Journal of Pharmaceutical Investigation
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• v.38 no.5
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• pp.325-329
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• 2008

To enhance the skin delivery of genistein (GT), a soybean isoflavone having anti oxidative activity, comparative formulation studies including liposomes were carried out. GT-loaded conventional and elastic liposomal gel showed the enhanced skin deposition and photoprotection effect as well, in comparison to GT suspension. Elastic liposomes composed of soybean phosphatidylcholine and sodium deoxycholate (85:15, w/w%) were superior to conventional liposomes and were of characteristics as follows: about 130 nm in size; 85% encapsulation efficiency of GT; 5.8% skin deposition of applied dose; 40% inhibition effect on UVB-induced $H_2O_2$ production. Photoprotection effect was closely related to skin deposition of GT. In conclusion, it is possible to suggest that elastic liposomes could be a promising nanocarrier system for efficient skin delivery.

• The Korean Journal of Food And Nutrition
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• v.26 no.4
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• pp.990-995
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• 2013

In the pursuit of practical usage for Codonopsis lanceolata and development of functional processed food material, the research on the product characterization is being performed through the manufacturing of Yanggaeng which is extracted from the Codonopsis lanceolata skin concentrate. By adding Codonopsis lanceolata skin extracts (0, 40, 60, 80, 100%) to the product, the chemical property characterization and organoleptic test of the produced Yanggaeng are being conducted. The scavenging effects on DPPH free radical have a significant proportional relationship with the addition of Codonopsis lanceolata skin extracts as 61.30 for 100% added group as compared with 52.72 for the null-addition group. It is considered that the antioxidative activity increases with the addition of the Codonopsis lanceolata skin extraction as the SOD similar activity rate was increased to 49.23% from 39.31%, the flavor preference was ranked as 80%>60%>0%>100%>40% showing that 60~80% of Codonopsis lanceolata skin extraction addition seems to be the proper amount.

• Tribology and Lubricants
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• v.29 no.3
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• pp.167-170
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• 2013

The friction behavior of human skin is determined by the complex interplay of the material and surface properties of the skin, as well as the contacting material, and strongly depends on the contact parameters (e.g., pressure and sliding velocity) and the presence of substances such as water, sweat, or skin surface lipids at the interface. Including a study on the effect of a surface's physical roughness for skin sliding over the surface, various studies have been conducted to understand human tactile sensibility. However, to investigate products in relation to human tactile sensibility, more objective research is needed. This study performed sliding experiments between the skin and the surfaces of phone cases to understand how the texture, friction, and stick-slip characteristics are related. Eight phone case surfaces with different topologies and chemical (or mechanical) compatibilities with skin were prepared and tested multiple times.

• Korean Institute of Interior Design Journal
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• v.15 no.4 s.57
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• pp.29-36
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• 2006

Fashion and interior architecture are two areas of design that may share common issues, trends and philosophies, making fashion design human's second skin and interior architecture the third. The concept of 'skin' has become one of the most interesting phenomena in design during the past decade and not surprisingly similar issues can be seen also in fashion and architectural design. The current trend in fashion design is that the skin (clothing) has become detached from the human body and extended into the environment, resulting fashion as art objects. Skin in architecture and interior design has also become detached from the structure so designers have more freedom to experiment by using advanced technologies. The present study attempts to analyze common features of 'skin phenomenon' in fashion and interior architecture that are; detachment, emphasis on space, extension, territorial blending, and digital applications. The researcher has used constant comparative method to categorize the five features among many examples. The limitation of this study is that it is focused on the formative phenomena of projects excluding the philosophies and personal background of each designer. However, it is hoped that the study may assist designers and other researchers to understand relationships between fashion and interior design, hold broader spectrum in art and design.