• 제목/요약/키워드: duck skin

검색결과 138건 처리시간 0.027초

천연고분자 기재에 의한 수용성 항고지단백혈증제의 흰쥐 피부투과 특성 (Skin Permeation Characteristics of Antihyperlipoproteinemic Agent using Natural Polymer Bases in Rats)

  • 공승대;황성규;정덕채
    • 한국응용과학기술학회지
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    • 제17권2호
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    • pp.126-131
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    • 2000
  • 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 oxiniacic acid 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.

In Vivo Evaluation of Multi Lamellar Vesicle Liposome’s Percutaneous Absorption and Stability

  • Joung, Min-Seok;Park, Jong-Oan;Seo, Bong-Seok;Ryu, Chang-Duck
    • 대한화장품학회지
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    • 제27권1호
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    • pp.29-42
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    • 2001
  • We had prepared MLV liposome with Hibiscus Esculentus Ext.(HEE) which have fluorescent light in order to evaluate its percutaneous absorption about hairless rat skin. Then we investigated particle size of MLV using confocal laser scanning microscope(CLSM) and transmission electron microscope(TEM), respectively. Stability of MLV liposome and penetration of MLV liposome to hairless rat skin was measured by CLSM. As a result of experiments, MLV was globular shape and the rage of particle size was 0.3-0.5$\mu\textrm{m}$ mostly. Cream-type MLV had high stability comparatively. When we treated with MLV to rat skin, skin penetration was enhanced, especially, the optimum concentration of MLV on penetration to rat skin was 10%. Optimum penetration time was 6hr-12hr. And MLV-type HEE was more effective on percutaneous absorption than HEE-cream or liposome-type HEE.

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에너지 부하 감소를 위한 인텔리전트 외피 디자인의 분류 및 표현특성에 관한 연구 (A Study on Classifications and Expression Characteristics of Intelligent Skin Design for Reduction of Energy Load)

  • 서원덕
    • 한국주거학회논문집
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    • 제19권5호
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    • pp.67-75
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    • 2008
  • The Progress and development of technology occurring since the 20th century has improved the quality of life of most people. However, serious energy problems have arisen as a result of this lifestyle of convenience and prosperity. These problems have already stared to threaten the very survival of human beings. Architecture and energy are no longer separate concepts. They are now considered as coexisting subject areas. The mutual relevance of energy, technology and architecture is expected to be more emphasized in the future. This study is concerned with the skin design of intelligent housing, which defines the external and infernal boundary. Applicable design techniques are suggested. The purpose of his study is to classify intelligent skin technologies and applications, and to grasp the design characteristics, advantages and disadvantages, as well as design techniques of each items related to Housing. This study will also suggest application techniques that can be used as basic data for determining an appropriate skin type when designing single buildings.

Nicotinic acid N-oxide를 이용한 항콜레스테롤 연고의 경피 투과 특성 (Transdermal Permeation Characteristics of Anti Cholesterol Ointment using Nicotinic acid N-oxide)

  • 정덕채;김규원
    • 한국응용과학기술학회지
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    • 제25권2호
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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.

인삼열매의 피부노화 억제 효과 (The Anti-aging effects of Korean Ginseng Berry in the Skin)

  • 염명훈;이진영;김지성;박찬웅;김덕희;김한곤
    • 생약학회지
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    • 제41권1호
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    • pp.26-30
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    • 2010
  • The root of Korean ginseng (Panax ginseng C.A. Meyer) is a commonly used herbal medicine in China, Korea, Japan. However, the compositions and effects of Korean ginseng berry are not clear to date. In order to investigate the anti-aging effects in the skin, Korean ginseng berry was extracted with 70% ethanol and tested the biological effects. In the results, Korean ginseng berry extract showed an excellent anti-oxidant effect against oxidative stress and decreased MMP-1 over-expression induced by UV irradiation. Especially the main component of Korean ginseng berry extract, ginsenoside Re, increased hyaluronic acid in HaCaT keratinocytes. We improved Korean ginseng berry could be a good material for the anti-aging effect of skin.

어혈(瘀血)로 변증된 피부갑착(皮膚甲錯) 환자에 혈부축어탕(血府逐瘀湯)을 사용한 치험1례 보고 (A Case Report of Skin Scale Treated with Hyulbuchukeotang)

  • 윤현덕;신오철;박치상;이소연
    • 대한한방내과학회지
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    • 제26권3호
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    • pp.720-724
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    • 2005
  • Objective : Skin scale(皮膚甲錯) refers to an excessive dryness of skin which can be found under such conditions as blood deficiency(血虛), blood heat(血熱), damp heat(濕熱), the weakness of stomach(脾胃虛) and blood stasis(瘀血). Method : A sensitive and nervous patient showed symptoms of insomnia and chest discomfort as well as skin scale. He had great anxiety over his illness. He, therefore, was diagnosed as blood stasis caused by outburst of emotions and was prescribed Hyulbuchukeotang(血府逐瘀湯) to remove blood stasis in chest. Result and Conclusion : After taking Hyulbuchukeotang, insomnia, chest discomfort and skin scale eased off. Since not only blood stasis but also other factors may cause skin scale, more research on such cases must be done to determine the efficacy of Hyulbuchukeotang for skin scale.

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한방 피부 진액 변증론 연구 (study on pattern identification about fluid-humor of skin in Oriental Medicine)

  • 김경신;조가영;김덕희;김병수
    • 혜화의학회지
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    • 제19권2호
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    • pp.35-42
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    • 2011
  • The purpose of this study is to evaluate the difference about pathogenesis of skin type. the theory that explains each individual react to certain stress is generally accepted in traditional oriental medicine. The aim of this experiment is to find out relationship between the effect of facial condition and the vital conditions of traditional Oriental medicine. We recognized that pattern identification of fluid-humor could be divided into 4 different groups. The reason is that the fluid-humor could be interpreted as Qi & Blood, furthermore Qi & Blood were categorized into deficiency and excess groups. Korean female volunteers in good health participated in this experiment. Three doctors of Oriental medicine classified them into 4 groups based on qi-blood and deficiency-excess concept(qi-deficiency; qi-excess:qi-stagnation; blood-deficiency; blood-excess:static-blood). Volunteers were assessed with non-invasive skin measuring devices. And we analyzed the correlation of skin physiological parameters with vital conditions; moisture, sebum and elasticity. Measurement moisture and sebum of facial skin tended to deacease only in static blood group.

30${\sim}$40대 한국 여성의 안색과 혈행의 상관성 연구 (The correlation of the skin color to the blood circulation on the face of Korean female between the ages of 30 and 45)

  • 김은주;노호식;김수정;문은정;김덕희;김한곤;조가영
    • 대한한의정보학회지
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    • 제14권2호
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    • pp.73-79
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    • 2008
  • Objectives : We investigated the correlation of the skin color to blood circulation on the face of Korean female by noninvasive-skin measuring devices. Methods : Korean female(37.47${\pm}$3.66 years, n=36) aged 30-45 years were participated in this study. We measured the skin color of the face with Spectrophotometer CM2600d (Minolta, Japan) and the skin blood flow with Laser Doppler Imaging-Periscan PIM II (Perimed AB, Sweden). The skin color and blood circulation of three groups (30-35 years, 36-40 years, 41-45 years) divided on age were analyzed by paired-t test and regression analysis. Results : The L* values of the skin were decreased and the a* values were increased significantly with age. This means that the more age increase, the more the skin is dark and red. But the skin blood flow was not significantly different with age and skin color. Conclusions : In the oriental medicine, It was reported that the face of the female over 35 years is changed gradually haggard and the blood circulation is decreased. In our study, the blood circulation was not changed and the skin color was dark and red with increasing the age. We think this symptom resulted from the better nutrition than the past, the change of the blood-quality and this changes were too sensitive to be measured by Laser Doppler Imaging system.

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성상신경절 차단시 부착형 피부온도계의 사용 경험 (The Use of Sticker Type Temperature Indicator in Stellate Ganglion Block)

  • 윤덕미;오흥근;케이지 이시자키;후지타 타츠시
    • The Korean Journal of Pain
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    • 제7권1호
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    • pp.49-52
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    • 1994
  • Measurement of skin temperature is most frequently used to evaluate effect of sympathetic block. Sticker type skin temperature indicator, $ProChecker^{(R)}$, uses metamocolor, which changes the darkness of the color by giving and taking of electrons in response to temperature. We examined the accuracy of this skin temperature indicator in pain clinic patients who were treated with stellate ganglion block. Ten minutes before, and 10~20 minutes after stellate ganglion block, skin temperature on both dorsum of hand were measured using both $ProChecker^{(R)}$ and thermography concurrently. The results showed that skin temperature measured by $ProChecker^{(R)}$ was feasible, in correlation to thermography. Sticker type temperature indicator ($ProChecker^{(R)}$) is concluded as a useful monitor of skin temperature during nerve block in outpatient clinics.

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