• Title/Summary/Keyword: outer skin

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Planning the Blind Position Considering Thermal Performance in the Intermediate Space of Double-Skin Facade (이중외피 중공층의 열성능을 고려한 블라인드 위치 계획)

  • Choi Dong-Hee;Jo Jae-Hun;Seok Ho-Tae;Yeo Myoung-Souk;Kim Kwang-Woo
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.17 no.7
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    • pp.620-628
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    • 2005
  • The blinds in the intermediate space are installed to block the direct solar radiation. As the blind divide the airflow of intermediate space into two, thermal performance of Double-Skin Facade (DSF) are affected by the blind position. Therefore blind position should be planed with careful consideration in order to maximize the thermal performance of DSF. In this study, CFD was peformed to analyze the effect of blind position in multistory-type DSF in variation of other DSF elements. The simulation results showed that the case with narrow depth of intermediate space and outlet on upper side of outer-facade, it is profitable to place blind as close as possible to the outer-facade. In the other cases, the blind should maintain 0.15 m distance from outer-facade.

Alterations of stratum corneum associated with aging in hairkless mouse (노화에 따른 무모 생쥐의 각질층 상태 변화)

  • 박선규;김영득
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.22 no.1
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    • pp.27-39
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    • 1996
  • Recently, in vitro stratum curneum model was a useful tool to evaluate the skin condition such as tranespidermal water loss, skin hydration and etc.. In this study to evaluate the alteration of SC with aging in hairless mouse, we measured TEWL using in vitro SC model, SC lipid, and outer corneocytes area. Although the total SC lipid was rich about 30% in 8 week old mouse compared with that of 82 week old mouse, the TEWL values were higher in the former than that of the latter. The outer corneocytes area was 559 $\pm$ 65 $mu extrm{m}$2 in 8 week old mouse and 755 $\pm$ 56 ${\mu}{\textrm}{m}$2 in 82 week old mouse. So the barrier function was reinforced with aging. This result suggested that the reinforced barrier function is one of the defense systems against the outer enviornment and the decreased skin function with aging.

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Planning of the Blind Position Considering Thermal Performance in the Intermediate Space of Double-Skin Facade

  • Choi Dong-Hee;Jo Jae-Hun;Seok Ho-Tae;Yeo Myoung-Souk;Kim Kwang-Woo
    • International Journal of Air-Conditioning and Refrigeration
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    • v.14 no.2
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    • pp.57-65
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    • 2006
  • The blinds in the intermediate space are installed to block the direct solar radiation. As the blind divides the airflow of intermediate space into two parts, thermal performance of Double-Skin Facade(DSF) is affected by the blind position. Therefore the blind position should be planned with careful consideration in order to maximize the thermal performance of DSF. In this study, CFD was performed to analyze the effect of blind position in multistory-type DSF in variation of other DSF elements. The simulation results showed that the case with narrow depth of intermediate space and outlet on upper side of outer-facade, it is profitable to place blind as close as possible to the outer facade. In the other cases, the blind should maintain 0.15m distance from outer facade.

Temperature variation of the outer skin above specific acupoints induced by controlling mind : Pilot Study (조심법(調心法)을 통한 혈위의 체표온도변화 관찰 : Pilot Study)

  • Lee, Hwa-Jin;Chae, Youn-Byoung;Park, Hi-Joon;Baik, You-Sang;Yi, Seung-Ho;Lee, Hye-Jung
    • Korean Journal of Acupuncture
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    • v.24 no.3
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    • pp.55-65
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    • 2007
  • Qi intention. Temperature variations on the outer skin above measured at acupuncture points, PC8, LI4, and ST7. Results : The change of temperature in PC8 of the Qigong trainees were significantly higher than that of non-trainees ($0.97{\pm}0.20$ vs. $0.45{\pm}0.10$ respectively, p< 0.05 ). The change of temperature of the other acupoints areas was not significantly different between the two groups. Conclusions : Qi intention resulted in temperature change at the outer skin on the specific acupoints.

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The Localization of Cytokeratin 19 and Vimentin in Sprague Dawley Albino Rat Skin Tissue

  • Kim, Tae Keun;Kim, Yong Joo;Min, Byoung Hoon;Kim, Soo Jin
    • Applied Microscopy
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    • v.44 no.1
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    • pp.15-20
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    • 2014
  • Cytokeratin 19 (CK19) expressed in epidermis of skin, bulge region of hair follicle, outermost layer of outer root sheath and proximal and distal to bulge. Vimentin is a fibrous protein that localized in cytoplasm of fibroblast and forms cytoskeleton to maintain shape of cell and nucleus. In this study, CK19 and vimentin in skin were confirmed with light, fluorescence and transmission electron microscope. As a result, CK19 was localized epidermis, hair follicles, outer root sheath and nucleus of Merkel's cell. However, vimentin was localized some epidermis, dermis, hypodermis and nucleus of Merkel's cell. The role of CK19 is self-renewal and homeostasis in skin. Also, hair follicle regeneration and hair growth is known to be related. It is supposed that required of structural proteins that make up cytoskeleton is increased. Thereby, expression of CK19 is increased. It is considered that vimentin localized in order to stabilize structure of cell and cytoskeleton of fibroblasts. Also, CK19 and vimentin present in nuclei of Merkel's cell, and to act as a fibrous protein that make up end of a nerve fiber present in Merkel's cell and paracrine function of Merkel's cell.

Quantification of Quercetin in Different Parts of Onion and Its DPPH Radical Scavenging and Antibacterial Activity

  • Kim, Su-Jeong;Kim, Gun-Hee
    • Food Science and Biotechnology
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    • v.15 no.1
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    • pp.39-43
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    • 2006
  • Levels of quercetin in different parts of onion were investigated using high performance liquid chromatography (HPLC) and liquid chromatography mass spectrometry (LC/MS) suitable for use with functional food material. Two main peaks were observed on HPLC chromatograms from the extracts of the skin, and the outer, middle, and core parts of onion. Using LC/MS, peak 1 was tentatively identified as quercetin monoglucoside at m/z 466.4, and peak 2 as quercetin with [M]+ at m/z 303.3. The levels of quercetin in the skin, and the outer, middle and core parts of the plant were 16.83,2.67,0.95, and 0.35 mg/g, respectively. In the study of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, skin, the nonedible part, contained the highest amount of quercetin, compared to the other edible parts, and showed the highest DPPH radical scavenging activity. Levels of quercetin and DPPH radical scavenging activity increased from core to skin. All parts of onion exhibited the strongest antibacterial activity only against Staphylococcus aureus and Vibro parahaemolyticus. Antibacterial activities of onion exhibited that S. aureus was more sensitive than V. parahaemolyticus. Among the four onion extracts, the middle part showed the strongest inhibitory activity against S. aureus but all onion extracts showed similar antibacterial activities against V. parahaemolyticus.

Effects of Shoe Sizes on the Inner Environment of Shoes (신발사이즈가 신발 내적환경(內的環境)에 미치는 영향(影響))

  • Yoo, Hyun;Shim, Boo-Ja
    • Journal of Fashion Business
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    • v.6 no.4
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    • pp.151-162
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    • 2002
  • This study aims to reveal the effects of shoe size room on the inner environment of shoes by examining the changes of footskin temperature, temperature and humidity of the shoes, and psychological responses. The following conclusions were made: 1. Skin temperature had significant differences according to shoe sizes in the inner foot parts (right/left) and the outer foot part (left). As time went, skin temperature was distributed as follows: Type A > Type C > Type B. 2. Skin temperature appeared in the following order: instep > inner foot > outer foot. 3. The temperature within the shoes had significant differences: Type A > Type C > Type B. But no significance was recognized in the humidity within the shoes: Type B > Type C > Type A. 4. Some significance was noticed in the psychological responses of size fitness and comfortableness. In size fitness, Type B was responded to be fitting, Type A little small, and Type C rather big. Moisture had similar changes according to three shoe sizes, but humid was the response as time went. Comfortableness appeared in the order of Type C > Type B > Type A.

Clinical Cases of Skin Diseases Treated with Hyungsang Medicine Ⅱ (피부질환의 형상의학적 치험사례 Ⅱ)

  • Kang Kyung Hwa;Cho Sung Tae;Lee Yong Tae
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.18 no.5
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    • pp.1520-1526
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    • 2004
  • The writers present this additional paper to supplement the treatise (Clinical Cases of Skin Diseases treated with Hyungsang Medicine) issued at Hyungsang Medicine Conference in 2001. New other cases have been added in this paper because we didn't deal with sufficient cases in the former treatise and there is also a need for continuous research. The skin is the part that is exposed to the outer environment. Consequently, it is not only under the direct influence of the outside, but also shows internal abnormalities. Therefore, it should be carefully examined, when diagnosing a skin disease, whether the disease is caused by the outside influence, or it reveals internal abnormalities, or it shows both outer and internal abnormalities. For skin disease diagnoses, there are still limits in finding out the cause of a disease only by means of feeling pulses and analysing symptoms. In order to overcome those limitations, and for more accurate and appropriate treatments, Hyungsang diagnosis should be fully understood and well recognized. Accordingly, for skin disease treatment especially, along with all the other disease treatments, we should take the four combined factors (configuration, color, pulse and symptoms) into consideration to bring out the merits and the characteristics of the oriental medicine and be able to prepare for any cases.

Development of Isolation and Cultivation Method for Outer Root Sheath Cells from Human Hair Follicle and Construction of Bioartificial Skin

  • Sin, Yeon-Ho;Seo, Yeong-Gwon;Lee, Du-Hun;Yu, Bo-Yeong;Song, Gye-Yong;Seo, Seong-Jun;Hwang, Seong-Ju;Kim, Yeong-Jin;Yang, Eun-Gyeong;Park, Jang-Seo;Jang, Lee-Seop;Park, Jeong-Geuk
    • 한국생물공학회:학술대회논문집
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    • 2003.04a
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    • pp.302-305
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    • 2003
  • It is difficult to obtain sufficient healthy skin for coverage of a wide area of skin wound. In the skin, an additional population of living epithelial cells is located in the outer root sheath (ORS) of hair $follicles.^{1),2)}$ ORS cells should be a good source of epithelium because they are easily obtainable and patients do not have to suffer from scar formation at donor sites. We modified ordinary primary culture technique for the purpose of solving such problem that epithelial cells have a low propagation and easy aging during culture periods. First of all, we improved primary cultivation methods. In the ordinary primary culture, average yield of human ORS cells was $2\;{\times}\;10^3$ cells/follicle by direct incubation with trypsin (0.1%)/EDTA (0.02%) solution for 15 min at $37^{\circ}C$ but we could obtain about $6.5\;{\times}\;10^3$ cells/follicle by two step enzyme digestion method with dispase (1.2 U/ml) and trypsin (0.1%)/EDTA (0.02%) solution. So we could achieve three times higher primary cultured ORS cell yield. Secondly, we could obtain total $2\;{\times}\;10^7$ cells in serum free medium and even more total $6\;{\times}\;10^7$ cells in modified E-medium with mitomycin C-treated feeder cells during 17 days. Using the cultured ORS cells, and we could make bioartificial skin equivalent in vitro and concluded that ORS cells were progenitor cells for skin epithelial cell.

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Electron Microscopic. Study on Mucous Glands in Frog Skin (개구리(Rana catesbeiana) 피부점액선(皮膚粘液腺)에 관한 전자현미경적(電子顯微鏡的) 연구(硏究))

  • Kang, Kyung-Hee;Jeon, Jin-Seok
    • Applied Microscopy
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    • v.25 no.1
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    • pp.86-95
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    • 1995
  • This study was accomplished to investigate the ultrastructure of mucous glands in dorsal skin of frog (Rana catesbeiana) by means of scanning and transmission electron microscopes. The dorsal skin of Rana catesbeiana is composed of epidermis and dermis. The cutaneous mucous glands consist of inner glandular epithelial cells and outer myoepithelial cells. Glandular epithelial cells are divided into four types by the microscopic ultrastructure; ER-rich cell, round secretory granule-containing cell, foam-like granule mass-containing cell, mitochondria-rich cell. Myoepithelial cell has a long elliptical nucleus and filled with fibrous materials in the cytoplasm. As a result of scanning microscopic observation, the surface of dorsal skin is covered with cutaneous protrusions. The opening sites of the mucous glands are irregularly distributed in dorsal skin.

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