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Performance analysis for the Characteristics of Double/ Single Effect Hybrid type Absorption Chiller (일중/이중효용 하이브리드 타입 흡수식 냉동기 성능 특성에 관한 수치적 연구)

  • You, Da-Young;Song, Tae-Min;Lee, Jung-Byoung;Kim, Hyung-Jin;Im, Ick-Tae;Moon, Sang-Done;Park, Chan-Woo
    • Proceedings of the SAREK Conference
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    • 2009.06a
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    • pp.272-278
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    • 2009
  • The characteristics of hybrid type absorption chiller are studied numerically to use a waste hot water effectively. In the case of the full load, the concentration and temperature of LiBr solution are increase about $11^{\circ}C$, 1.3% respectively at the single effect generator by hot water. As a result, the heat of the high temperature generator are decrease, so the energy can be saved. As the partial load decreased the consumption ratio of fuels are decreased and the reduction ratio of fuels are increased. The variation of COP with the inlet temperature of hot water is higher than that of the flow rate of hot water. The effect of mean temperature difference with solution and hot water of the generator are higher that of flow rate of hot water, it can effect on COP which is sensitive to heat of generator.

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The Effect of Differences between Gal-Ot and Undyed Clothing and clothing Types on Wear Sensation (갈옷과 흰옷 및 그 의복형태의 차가 착용감에 미치는 영향)

  • 박순자;손원교
    • Journal of the Korean Society of Clothing and Textiles
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    • v.23 no.1
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    • pp.30-41
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    • 1999
  • This study was conducted to verify the advantages of Gal-Ot. Gal-Ot is defined the clothings dyed with persimmon juice. Firstly the physical properties of fabrics were examined. Secondly the wear tests were conducted. The wear tests were performed in climatic chamber controlled 3$0^{\circ}C$ air temperature 50$\pm$5% R.H and 0.2m/s air movement. Four women subjects participated in this experiment and 4 times experiments were performed per one subject. The expeimental schedule was planned following 4 steps that is sedentary posture during 30 minutes-walking the 5。slope treadmill by 70m/min during 20 minutes-sedentary posture during 20 minutes-standing posture on toward the blowing wind during 10 minutes. The results obtained is as folows : The insulation of fabric was increased with dyeing with persimmon juice. The air permeability of fabric was remarkably increased with dyeing with persimmon juice. The mean skin temperatures of subjects were apt to be higher in wearing Gal-Ot than undyed clothing. The clothing micro temperature of subjects were slightly inclined to become lower in wearing Gal-Ot than undyed clothing, The clothing micro humidity was decreasee when: the subjects were gal-Ot than wore undyed clothing, And then it brought about more comfortable on wear sensation. The differences of physiological reactions were not consistent between clothing types except for sweat rate on the back. This result may be attributed the to complex experimental schdules consisted of four steps and to a little difference between open type and close type. However I consider that the clothing type of Gal-Ot is suitable for open type because Gal-Ot is summer wear for blocking the sultry heat.

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A Study on the Color Characteristics of Japanese Ethnic Look in Contemporary Fashion (현대 패션에 나타난 일본풍 에스닉 룩의 색채 특성 -2004년 S/S부터 2008년 F/W까지-)

  • Kim, Ji-Young;Kim, Ji-Eon
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.11
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    • pp.1750-1759
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    • 2008
  • The purpose of this study was to comparatively analyze the color characteristics of the Japanese ethnic look advanced by Japanese and western designers in comparison with the actual traditional colors of Japan. The data determining the traditional colors of Japan was collected through a critical apparatus examination of 250 colors and the color data of what determines Japanese ethnic look was collected through an analysis of the clothing appearing in four fashion collections -Paris, Milan, London, and New York- from the 2004 S/S collections to the 2008 F/W collections. For the analysis of these colors, Photoshop was used with an RGB value measuring under 300dpi resolutions. The RGB values were then converted to H V/C values through Munsell Conversion 8.0.3, and they were analyzed using Munsell's 40 Hue and PCCS. The results of this study are as follows: Japanese designers are expressing their own aesthetic theory by designing fashions in traditionally Japanese hues. However, neutral colors and low-chroma tones appear more often than traditional colors. This study illustrates how these designers use color to reflect their inside ideals being oversensitive traditonal ideals. In contrast, western designers reflect more contemporary trends through the use of hues that more clearly reveal their preconception of the colors of the Orient rather than actual traditional Japanese colors. Moreover, these foreign designers tend to approach fashion design by the means of shape rather than color. Japanese designers systematically analyze and apply their own culture to contemporary fashion design. Their efforts serve as a good reference model for research on traditional culture and fashion design.

Evaluation of the functional phenolic compounds as to various ripening phases of the reddish rice cultivar(Oryza sativa, Superhongmi)

  • Ham, Tae-Ho;Kwon, Soon Wook;Kwon, Young In;Ryu, Su-Noh
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.272-272
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    • 2017
  • Recently, consumer's demands are increasing for new natural functional and healthful food. These demands have encouraged a better understanding of the biochemical, chemical and nutritional composition of plant products. Superhongmi rice variety was derived from a cross between CG2-3-5-2-6-2 (Heugjinju/Suwon 425) having reddish brown color and Daeribbyeo 1 having a large grain size. Superhongmi rice headed on Sep. 5th and has 94.7 cm culm length. Taxifolin, a phenolic compound in superhongmi rice extract had high ${\alpha}-glucosidase$ inhibitory activity. The ${\alpha}-glucosidase$ inhibitory activity of the superhongmi rice extracts correlated to the taxifolin content and antioxidant activity of the extracts. A new method for quantitative determination of taxifolin in superhongmi rice variety by high performance liquid chromatography was established. A reversed-phase system with Tosoh TSK-gel $C_{18}$ column using 60% methanol in water(pH 2.4) as a mobile phase was developed. Taxifolin was detected at 280 nm and the analysis was successfully carried out within 40 min. In ripening phase, the amount of taxifolin showed a mild decreasing slope. The highest contents was 59.27mg in 100g seed on the 30 days after heading(DAH). The optimum harvesting time, considering taxifolin content, maturity rate and thousand seed weight(TSW) was DAH 50. These results suggest that superhongmi rice which has high taxifolin content has the potential to contribute as a dietary supplement for controlling hyperglycemia and oxidative stress-linked diabetes complications.

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Influence of Dietary Natural and Synthetic figments on Growth Performances, Skin Pigmentation and Color Difference in Broiler Chicks (천연 및 합성 착색제의 첨가가 브로일러의 육성성적, 착색도 및 육색 변화에 미치는 영향)

  • 김창혁;김혜정;함영훈;이성기;이규호
    • Korean Journal of Poultry Science
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    • v.30 no.1
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    • pp.35-40
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    • 2003
  • This experiment was conducted to investigate the effects of natural and synthetic commercial pigments on the growth performances, skin pigmentation and color difference of broiler chicks. Experimental diet was formulated to have isocalories and isonitrogen for experimental period, and xanthophyll concentration in the diet was 8.45g/1on. The experiment was conducted for six weeks with 450 broiler chicks. The birds were assigned to 10 treatment groups and each group had 15 chicks with three replications. Results showed that the types of pigments did not have any effect on body weight, feed intake and feed efficiency. The mortality was lower with higher pigment supplementation and greater in the natural pigment groups than in the synthetic ones. Dressed carcass, abdominal fat pad and gizzard weight were not significantly different among treatments. The pigmentation of shank skin was increased with high pigment supplementations, and the pigmentation effect was greater with synthetic pigments than in natural pigments. In the shank meat or skin, the color difference(L*, a*, b*, c* and h*) was not consistently related to pigmentation.

A Literature Study on the Yuk-mi-ji-hwang-tang-kakambang of Applying to Dementia (치매에 응용(應用)된 육미지황탕가감방(六味地黃湯加減方)에 대한 문헌적(文獻的) 고찰(考察))

  • Jeon, S.Y.;Kang, H.J.;Choi, J.B.;Cho, M.R.;Jin, C.S.;Hong, S.
    • The Journal of Internal Korean Medicine
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    • v.19 no.1
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    • pp.271-290
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    • 1998
  • As a result of investigating the cases of applying Yuk-mi-ji-hwang-tang-kakambang(六味地黃湯加減方) to treating dementia, the following results are obtained. 1. Yuk-mi-ji-hwang-tang-kakambang(六味地黃湯加減方)is applied to anapladementia. 2 Yuk-mi-ji-hwang-tang-kakambang(六味地黃湯加減方) is also applied to treating the dementia due to congenital weakness and defficiencies of the Liver and Kidney, the Spleen and Kidney. 3. To cure congenital weakness, Yuk-mi-ji-hwang-tang(六味地黃湯), Jwa-kwi-hwan(左歸丸), Bo-sin-ik-su-tang(補腎益髓湯) and Chil-bok-eum-kakam(七福飮加減) which can bo-sin-ik-jeong(補腎益精) sung-noi-ik-ji(醒腦益智), for the defficiencies of liver and kidney, Jwa-kwi-hwan-kakam(左歸丸加減), Woo- kwi-eum-kakam(左歸飮加減) and Ki-kuk-ji-hwang-tang-hap-jng-ji-tang-kakam(杞菊地黃湯合定智湯加減) which can bo-ik- kan-sin(補益肝腎) jeon-jeong-gun-noi(塡精健腦) and for the defficiencies of spleen and kidney, Hwan-so-dan-kakam(還少丹加減) and Kum-kwe-shin-ki-hwan-kakam(金궤腎氣丸加減) which can bo-sin-gun-bi(補腎健脾) ik-gi-sang-jeong(益氣生精) gun-noi-sang-su(健腦生髓) 4. Won-Ji(遠志) and Suk-chang-po(石菖蒲) which can sung-sin-ga-gu(醒神開竅) are added to yuk-mi-ji-hwang-tang(六味地黃湯).

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Studies on the Polysaccharide of Ganoderma lucidium Extract by Microorganism Fermentation (미생물 발효 영지버섯 추출액의 다당체에 관한 연구)

  • Hwang, Yu-Yeon;Chong, Myong-Soo;Kim, Hae-Ja;Lee, Ki-Nam
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.21 no.6
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    • pp.1506-1512
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    • 2007
  • In order to investigate the totale yield, the content of soluble polysaccharide and the others of FEW extract from the yeast fermentated Ganoderma lucidium by supersonic method, the yeast strain was inoculated after pretreatment and subsequently followed fermentation and supersonic extract. The main construction of the extract method is composed of the main glucose and together with the xylose, fucose, galactose and mannose. Results show that because of the generated lactic acid and ethanol, pH value of extract decreases and the safety as well as the preservation is improved. The extract yield, the total soluble polysaccharide, SOD-like activity, cytotoxic effect and growth inhibitory effect against cancer cell line are much higher in FE method than RE method, especially FEW3 extracts fermented during 24hrs. It is concluded that yeast fermentation makes the extract yield increase because of the cell disintegration, the useful ingredients of the germ body, the metabolic products, the insoluble ingredients due to the generation of ethanol, and the cell fragmentation caused by the supersonic waves vibration. Content of generated ethanol, total soluble polysaccharide and extract yield all increase during the fermentation time from 24 to 72 hours and the optimum fermentation condition is at $27^{\circ}C$ for 72 hours. The bitter taste and smell of the Ganoderma lucidium extract is diminished, fragrant-bitter taste and smell is generated so that the whole functional quality is improved.

Analysis of the Three Dimensional Structure of Envelope Protein of the Japanes encephalitis virus Isolated in Korea (국내에서 분리된 일본뇌염 바이러스의 Envelope Protein의 3차구조 분석)

  • Nam, Jae-Hwan;Chae, Soo-Lim;Kim, Eung-Jung;Yoon, Kyung-Sik;Lee, Ho-Dong;Koh, Hyun-Chul;Cho, Hae-Wol
    • The Journal of Korean Society of Virology
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    • v.27 no.2
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    • pp.209-216
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    • 1997
  • Three dimensional structures of envelope protein from Korean isolates and Nakayama-NIH strain of Japanese encephalitis virus (JEV) were deduced by a computer program (HyperChem 4.0 Chemplus 1.0) based on the data of the three dimentional structure of Tick-borne encephalitis virus. In the three dimensional structure of envelope protein, neutralizing epitope and T-helper cell recognition site of C-terminal region of Korean isolates were structually similar to those of Nakayama-NIH but the N-terminal region was not. Korean JE isolates were compared with Nakayama-NIH strain by using cross-neutralization antibody test. Neutralizing activities of Korean isolates derived from guinea pigs were higher than those of Nakayama-NIH strain against Korean isolates, although the polyclonal antibody titers of Nakayama-NlH showed 1:160 to 1:640 against Korean isolates. According to the results from three dimentional structures and cross-neutralization analyses, the antigenic difference between Korean JE isolates and Nakayama-NIH strain may be dependent on structural difference of envelope protein.

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Secretory Differentiation of Hamster Tracheal Epithelial Cells Increases Activation of Matrix Metalloproteinase-2

  • Shin, Chan-Young;Lee, Woo-Jong;Park, Kyu-Hwan;Ryu, Jae-Ryun;Ko, Kwang-Ho
    • Biomolecules & Therapeutics
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    • v.12 no.1
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    • pp.1-8
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    • 2004
  • In chronic airway inflammatory diseases such as asthma and chronic bronchitis, it has been suggested that matrix metalloproteinases secreted from infiltrating neutrophil contribute the pathogenesis of the disease and have been a focus of intense investigation. We report here that hamster tracheal surface epithelial goblet cells (HTSE cells) produce matrix metalloproteinase-2 (MMP-2) and tissue inhibitor of metalloproteinase-2 (TIMP-2). Matrix metalloproteinase activities were investigated using [$^3H$]collagen-digestion assay and gelatin zymography. The subtype of matrix metalloproteinases expressed from HTSE cells was MMP-2 (gelatinase A), which was determined by Western blot with various subtype selective anti-matrix metalloproteinase antibodies. The MMP-2 and TIMP-2 cDNAs from HTSE cells were partially cloned by RT-PCR and they reveal more than 90% of sequence homology with those from human, rat and mouse. The collagenolytic activity was increased with the secretory differentiation of the HTSE cell and it was found that zymogen activation was responsible for the increased MMP-2 activity in HTSE cells. The results from the present study suggest that the metaplastic secretory differentiation of airway goblet cells may affect chronic airway inflammatory process by augmenting the zymogen activation of MMP-2.

Effect of Charge Carrier Lipid on Skin Penetration, Retention, and Hair Growth of Topically Applied Finasteride-Containing Liposomes

  • Lee, Sang-Im;Nagayya-Sriraman, Santhosh-Kumar;Shanmugam, Srinivasan;Baskaran, Rengarajan;Yong, Chul-Soon;Yoon, Sang-Kwon;Choi, Han-Gon;Yoo, Bong-Kyu
    • Biomolecules & Therapeutics
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    • v.19 no.2
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    • pp.231-236
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    • 2011
  • The aim of this study was to investigate the effect of charge carrier lipid on the skin penetration, retention, and hair growth of topically applied finasteride-containing liposomes. Finasteride-containing liposomes were prepared by traditional thin film hydration method using Phospholipon$^{(R)}$ 85 G and cholesterol with or without charge carrier lipid (1,2 dimyristoyl-sn-glycero-3-phosphate or 1,2-dioleoyl-trimethylammonium-propane for anionic and cationic charge, respectively). Freshly prepared finasteride-containing liposome suspension was applied on the hairless mouse skin, and skin penetration and retention were measured using Keshary-Chien diffusion cell. Non-liposomal formulation (ethanol 10% solution containing 0.5 mg/ml of FNS) was also used as a control. The amount of finasteride in the diffusion cell and mouse skin was measured by HPLC. The hair growth was evaluated using depilated male C57BL/6N mice. Mean particle size of all finasteride-containing liposomes was less than a micron, and polydispersity index revealed size homogeneity. Skin penetration and retention studies showed that significantly less amount of finasteride was penetrated when applied as anionic liposome while more amount of the drug was retained. Specifically, in liposome prepared with 10% anionic charge carrier lipid, penetration was 12.99 ${\mu}g/cm^2$ while retention was 79.23 ${\mu}g/cm^2$ after 24 h of application. In hair growth study, finasteride-containing anionic liposomes showed moderate efficacy, but the efficacy was not found when applied as cationic liposomes. In conclusion, topical application of finasteride using anionic liposome formulation appears to be useful option for the treatment of androgenetic alopecia to avoid systemic side effects of the drug.