• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 춘계 학술발표회
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• pp.1077-1087
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• 2010

Generally most of pile foundations are constructed with group pile rather than single pile. The study on efficiency and bearing capacity which are major elements for rational design of this group pile has been actively progressed, whereas there are truly only a few studies of negative skin friction working on group pile due to the consolidation of ground. The purpose of this study is to determine, among the elements of negative skin friction applied to pile, the occurrence modality of negative skin friction at center, side, and corner of $3{\times}3$ group pile using model test and, based on those observations, to propose the effective design direction of group pile.

• Bulletin of the Korean Chemical Society
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• 제28권1호
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• pp.99-102
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• 2007

To prepare freeze-dried ascorbyl palmitate (AsP)-containing liposome which can protect the drug from moisture attack and be used instantly by mixing with water for anti-aging and skin whitening therapy, AsP was encapsulated into liposomes and freeze-dried with trehalose. The freeze-dried liposome formulations were characterized by measuring water contents, particle size, time required for complete reconstitution. With the freeze-dried liposomes, we performed the stability test under accelerated conditions, skin permeation and localization test. The measurement of the time to perfect reconstitution showed that the freeze-dried liposomes can be changed to their initial state rapidly and short term stability test of AsP in reconstituted liposomes under accelerated conditions confirmed that the stability of AsP was considerably enhanced as compared to freshly prepared liposomes. The skin permeation and localization properties of AsP in reconstituted liposomes were not significantly different, indicating that the liposomal structures were maintained before and after freezedrying. In conclusion, the freeze-drying method provided a possible way to overcome the instability issue of AsP induced by the moisture and reproduced similar skin permeation and localization properties as shown by freshly prepared liposomes.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2005년도 춘계학술발표대회 논문집
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• pp.46-50
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• 2005

Smart skin, a multi-layer structure of composed of a round shape antenna, was designed and fabricated. Tests and analyses was conducted to study its behavior under compressive loads. It was confirmed that the designed smart skin failed due to premature buckling before compression failure. Numerical prediction of structural behavior of smart skin by MSC.NASTRAN agreed well with experimental data.

• 한국응용과학기술학회지
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• 제27권2호
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• pp.144-151
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• 2010

Over the years, scientists have developed many test methods to evaluate the efficacy of skin care products. The needs for objective assessment have stimulated to develop instruments that are capable of reliably monitoring some parameters in evaluating skin conditions. The beauty is evaluated as a measure of smoothness of skin surface. Quantitative size measurements of skin pores is also important concept to evaluate the their conditions. The purpose of this paper is to measure the temperature change of skin and the size of pores in the skin. The pore sizes were changed by its varying skin temperature. They were decreased by applying a essence which is contained with propellant and contents.

• 기본간호학회지
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• 제10권2호
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• pp.187-197
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• 2003

Purpose: This experimental study was to verify the effects of the mineral oil on skin under casts for relief of skin dryness and pruritus. Method: Participants in the study were inpatients at C university hospital in D city who had long leg casts. The mineral oil was applied to the skin under the casts in the experimental group of 18 patients and was not applied to the control group, also 18 patients. During the experimentation, the participants in the experimental group were informed about how to apply the mineral oil and 1 week later were responsible for applying the oil themselves. The oil was applied three times a day. Data collection was done from July 28, 2002 to September 28, 2002. The analyses were carried using frequencies, percentages, $x^2$-test, t-test, and repeated measures ANOVA with the SPSS WIN 10.0 program. Results: Hypothesis 1, 'The experimental group using the mineral oil application showed remarkably less dryness in the skin compared to the control group' was accepted (F=16.39, p=0.000). Hypothesis 2, 'The experimental group using the mineral, oil application showed remarkably less pruritus compared to the control group' was accepted (F=34.01, p=0.000). Conclusion: These results demonstrate that mineral oil application to skin under casts was effective in treating skin dryness and pruritus. Accordingly, it is concluded that mineral oil application to skin under casts can be an effective nurse intervention to treat skin dryness and pruritus.

• 한국의류학회지
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• 제27권11호
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• pp.1338-1349
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• 2003

The color of apparels has the close interdependency on the skin colors of the wearers. This study was carried out to group the skin colors of Korean males into several similar skin colors and to analyze their preference colors. The skin colors were measured quantitatively and classified into several clusters that has similar hue, value and chroma with Munsell color system that is internationally used to communicate the colors. Sample size was 420 Korean males. With color spectrometer, JX-777, 4 points of the body were measured. All subjects had been shown with 40 color chips and answered their preference colors. Data were analysed by K-means Cluster analysis, Duncan test, Frequency and Chi square test using SPSS WIN 10 statistical package. Findings were as follows: 1. The skin colors of Korean males were mixed with skin colors of YR, R, and Y. 2. 420 subjects who have YR color were clustered in 3 kinds of skin color groups. 3. The average face color of total subjects was 4.81YR 5.91/4.97 in Munsell color system, 60.74 in L value, 13.71 in a value, 24.54 in b value. 136 observations out of 420 subjects were composed of Type 1: 4.50YR 6.35/4.87 and 192 observations were composed of Type 2: 4.62YR 5.86/5.12 and 92 observations were composed of Type 3: 5.67YR 5.37/4.79. 4. The average skin color of total 420 subjects was 6.26YR 6.07/4.41 and 62.33 in L value, 10.64 in a value, 23.48 in b value. The average skin color of Type 1 was 6.27YR 6.44/4.27 and of Type 2 was 6.15YR 5.91/4.49 and of Type 3 was 6.49YR 5.84/4.43 respectively. 5. 3 groups showed that the most preference color of sport$.$casual was 2.5Y 8/16 and 7.5PB 4/16 and the most preference color to their skins was 7.5PB 4/16 and 7.5YR 7/16.

• 대한물리치료과학회지
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• 제21권1호
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• pp.37-43
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• 2014

Background : The purpose of this study is to verify the type of influence on the skin color according to the photoaging symptoms depending on the degree of external activities among the factors that influence the skin due to UV exposure and to obtain the basic study data on the physical therapy of the skin. Methods : In this study, in order to investigate the type of influence on the skin color according to the photoaging symptoms when the body is exposed to the UV rays having various effects on our body, a study was conducted using questionnaires and skin color measurement tool targeting 20 male college soccer students with many external activities and the senior high school students who has relatively less external activities due to the preparation for college entrance. The skin color was measured and the results were compared. Result : In the test group having relatively higher external activities, while they had less use of the sunscreen, they had more degree of UV exposure, and for the recognition of ultraviolet hazard, more were aware that it was harmful. In addition, in the skin color measurement test conducted targeting the son and the father in order to investigate the association between the skin color and the genetic factors, the experimental group showed a significant difference(p<.05) but the control group did not show any significant difference(p>.05). Conclusion : Based on such study results, the UV exposure time and the use of sunscreen are thought to be an important factor in the skin care.

• 항공우주시스템공학회지
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• 제9권3호
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• pp.31-38
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• 2015

Wind Turbines are becoming larger in size in order to improve economic efficiency through cost reduction, such as the construction of growth and power infrastructure of energy efficiency. It have requested the large-scale blade design and production. In the present study the new manufacture technique called a fabric-blade structure using spar, rib, and fabric membrane skin is introduced. The architectural membrane test method has been studied to be applied to the skin of the blade. The density and one-axis tensile tests of the architectural membrane materials are conducted to confirm the physical properties which are necessary to the structural designs and analyses of the wind turbine blade.

• 패션비즈니스
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• 제26권6호
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• pp.105-115
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• 2022

Wearing a mask is still advised since COVID-19 continues to spread. However, masks may also irritate the skin and cause mask acne, often known as "maskne", which is a type of acne mechanica caused by friction between the skin and clothing. Therefore, there is a need to develop an effective maskne cosmetic. In this study, we made the maskne cosmetics containing humulus lupulus extract and copper tripeptide-1 and investigated its stability and safety. To measure stability, a centrifugation test and heat-cool cycling were done, and changes in viscosity and pH were measured for 8 weeks. The Cumulative Irritation Test (CIT, WKIRB-202111-HR-096) was performed and positive reactions were determined by the ICDRG criteria. The results indicated that the samples were stable after centrifugation, temperature cycling, viscosity, and pH tests. In addition, cosmetic safety test results revealed that maskne cosmetics containing humulus lupulus extract and copper tripeptide-1 did not cause any skin responses. These findings indicate that prepared maskne cosmetics' stability and safety were comparable to those of currently available commercial cosmetics.

• 한국콘텐츠학회논문지
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• 제14권12호
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• pp.808-817
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• 2014

목적: 본 연구는 노인요양병원 요양보호사의 피부감염 인식과 감염관리 수행 정도를 파악하기 위한 서술적 조사연구이다. 방법: 본 연구는 G시와 J도에 소재한 7개 노인요양병원에서 근무하고 있는 요양보호사 209명을 대상으로 실시하였다. 수집된 자료는 SPSS 18.0 program을 이용하여 ${\chi}^2$-test, t-test와 ANOVA로 통계 분석하였다. 결과: 노인요양병원 근무 시 새로 생긴 피부감염은 76.6%가 '예'라고 응답하였으며, 피부감염의 진단은 접촉 피부염 42.5%, 옴 26.9% 그리고 습진 25.0% 였다. 피부감염 인식은 평균 3.81점이었고 감염관리 수행 정도는 412점 이었다. 대상자의 일반적 특성에 따른 감염관리 수행에서는 병상수(F=4.63, p=.011)와 하루 동안 돌보는 환자 수(F=2.67, p=.049)에서 통계적으로 유의한 차이가 나타났다. 결론: 본 연구결과는 요양보호사를 위한 보수교육 및 의료감염관리 표준지침 개발을 위한 기초자료로 활용할 수 있을 것이다.