• Title/Summary/Keyword: natural light

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A Study on Interior Design of Kwacheon House (과천주택 실내공간 디자인)

  • Kim, Sung-Hye;Choi, Young-Mi
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2007.11a
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    • pp.214-215
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    • 2007
  • This project was designed to create a warmth space for Kwacheon House. To create warmth space, four factors - Natural Habitat, Timeless Comfort, Exotic Exuberance, Luxe Living - were hired to design concepts. At first, the walls were remained to support structure and to keep privacy and others were removed to draw in light to the inner space. Light is the main element to have variation and natural space. Ornaments that were motived by nature, were accepted in moulding, furniture and fixture to enhance the comfort. At last, classical lightings added up to harmonize between day and night.

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Development of natural hairdye using the extracts of plants - The extracts of Pomegranate hull - (식물 추출물을 이용한 모발용 천연염료 개발 - 석류 과피 추출물을 중심으로 -)

  • Jo, A-Rang;Sin, Yun-Suk;Ryu, Dong-Il
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2008.04a
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    • pp.105-107
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    • 2008
  • Dyeing properties of the colorants extracted from pomegranate hull on hair were investigated to study its efficay of natural hair coloring dye. Effect of dyeing condition and mordanting on dye uptake, color change and colorfastness were explored. In addition, tensile strength retention is measured and the surface of the hair was observed by SEM. The water extracted pomegranate hull was concentrated and freeze-dried for preparing colorant powders. It was considered that ionic bonding was involved in the adsorption of pomegranate colorants to hair. Pomegranate hull colorants produced greyish brown colors on hair and the hair mordanted with Fe showed dark brown color. Mordant except Fe did not significantly increased dye uptake. Mordant except Cu increased light fastness, mordant except Cr increased washing fastness. SEM to observe the hair is damaged by ultraviolet light and cleaning. This is consistent with the results of tensile strength retention. From the results of colorfastness th washing and light, it was concluded that colorants from pomegranate hull can be need as a semi-permanent natural hair coloring dye.

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Effect of Light Quality on the Growth of Panax ginseng in a Phytotron With Natural Light (자연광기상실에서 인삼생육에 대한 광질의 영향)

  • Park, Hoon;Lee, Mee-Kyoung;Ahn, Sang-Deuk
    • Journal of Ginseng Research
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    • v.13 no.2
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    • pp.165-168
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    • 1989
  • Ginseng plants in the 2nd year were grown under the shade (90-95%) of colored cellophane films at $15^{\circ}C$ in a natural light phytotron. Relative root grown (final/initial) was in decreasing order of blue, green, white, yellow and red. The growth of aerial part, especially stem length was poorest in blue light with relative root growth negatively correlated with stem length. In this relation each color showed specific domain. Stem length showed positive linear correlation with leaf area per plant in each and among light though it was not significant in red light. The content and ratio of chlorophyll a and b in leaf were in the decreasing order of White, Blue, Green, Red and Yellow. There is positive correlation between chlorophyll a and chlorophyll b, and between total chlorophyll and chl:a/b ratio. Blue color shade is expected to be beneficial for ginseng production.

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Effect of Light and Feed Restriction During Rearing on Production Performance of Egg Strain Layers

  • Ahsan-ul-haq, Ahsan-ul-haq;Ahmad, Nazir;Rasool, Shahid;Shah, T.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.10 no.6
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    • pp.657-664
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    • 1997
  • 432 Babcock ISA white leghorn pullets reared for 8 weeks on a standard managemental conditions were exposed to feed/nutrient and light restrictions from 9 to 20 weeks of age. Four feeding regimes i. e. 100, 85 or 70 percent of the recommended allowance and low energy (2,500 Kcal/kg) low protein (13% CP) ration were fed each in the three light regimes i. e. (A) Natural day light starting from 13.24 hr/day at 8 weeks of age and ending 10.41 hr/day at the end of 20 weeks; (B) Constant 11 hr/day light and (C) starting with 13 hr/day at 8 weeks and decreasing @ 20 min/week till 20 weeks of age. At the age of 20 weeks all the birds were shifted to separate cages under uniform lighting feeding and management. During the 21st week light was increased to 12 hr a day and thereafter with an increase of 30 min per week, increased to 16 hr a day at the age of 29 weeks. From 20 weeks onward till 72 week age, all the birds were offered commercial layer rations ad libitum, prepared according to climatic conditions. The results of the study revealed that birds reared under natural and constant light had higher weights than decreasing light, yet they could not out perform during production period. The effect of feed and nutrient restriction, on the other hand, was found significant during rearing as well as production period. The birds exposed to higher level of feed and those exposed to nutrient restriction were lighter in weight. The 100% fed birds laid their first egg at an early age. However, those reared on 85% of the recommendation excelled all other groups in terms of produced number of eggs, egg mass, hen housed and hen day production and net returns.

Natural Dyeing of Chitosan Crossinked Cotton Fabrics(I) - Clove - (키토산 가교 처리된 면직물의 천연염색에 관한 연구(I) - 정향을 중심으로 -)

  • Kwak, Mi-Jung;Lee, Shin-Hee
    • Fashion & Textile Research Journal
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    • v.10 no.2
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    • pp.260-266
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    • 2008
  • Recently there has been a growing interest in the use of natural dyes in textile applications. Natural dyes can exhibit better biodegradability and generally have a higher compatibility with the environment. In this study, the colorants of clove were extracted with boiling water. Chitosan crosslinked cotton fabrics have been dyed with aqueous extract of clove and their dyeabilities on the fabrics were studied. Additionally the fastness to washing and light, and the effects on antimicrobial properties were also investigated. Cotton fabrics were treated with a crosslinking agent epichlorohydrin in the presence of chitosan to provide the cotton fabrics the dyeing properties of natural dye(clove) by the chemical linking of chitosan to the cellulose structure. This process was applied by means of the conventional mercerizing process. The chitosan finishing and durable press finishing of the cotton fabrics occurred simultaneously in the mercerization bath. The dyeability(K/S), which was obtained by CCM observation, remarkablely became increased when the crosslinked chitosan concentration was higher. The hue value indicated reddish yellow with increasing the crosslinked chitosan concentration. And the color fastness to washing and light was the almost the same. The chitosan treated cotton fabrics showed very high activities with almost 100% reduction.

The Dyeability of Natural dye Extracted from Chesnut Shell (밤껍질에서 추출되는 천연염료의 염색성 연구)

  • 정영옥
    • Korean Journal of Rural Living Science
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    • v.8 no.2
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    • pp.83-91
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    • 1997
  • In this study, the dyeability of natural dye extracted from chesnut shell was investigated in order to explore the using of discarded chesnut shell in natural dyeing. Dyeing experiments were done in various dyeing conditions which were different in dyeing temperature, concentration of dyebath, dyeing time, repitition of dyeing. pH of dyebath and mordant with 3 kinds of experimental fabrics silk, nylon and cotton. Color and color difference ($\Delta$ E) of every dyed fabrics were measured and color fastness to drycleaning, washing, perspiration and light were measured. The results were as follows ; 1. The dyebath became thicker with time and temperature of extraction and the characteristics of dyebath prepared chesnut shell 1g : distilled water 30㏄ after 3 hrs-boiling were 32,400ppm and 3.7pH. 2. The dyeabilities of silk and nylon fabrics were good and color difference was increased with dyeing temperature, concentration of dyebath, dyeing time, number of repitition and acidity of dyebath. But the dyeability of cotton was very poor compared to silk and nylon. 3. Without the treatment of mordant, the dyeability of silk was little lower than that of nylon, but after the treatment of mordants it became higher than nylon. After the treatment of mordant Cu and Fe, the dyeability of cotton was increased although the natural dye from the chesnut shell was hardly absorved in cotton without mordant. 4. On the whole, the colorfastness of dyed silk and nylon were very good except the colorfastness to washing in silk and the colorfastness to light in nylon.

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A Study on the Introduction of Natural Elements in Public places of Nursing Homes - Focusing on ensuring the amenity of mediation, interaction, and rest places - (노인요양시설 공용공간의 자연요소 도입에 관한 연구 - 매개, 교류, 휴식공간의 쾌적성 확보를 중심으로 -)

  • Jun, Myung-Sook;Choi, Sang-Hun
    • Korean Institute of Interior Design Journal
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    • v.18 no.1
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    • pp.108-116
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    • 2009
  • As an aging society accelerates its pace for the present, providing a pleasant environment to nursing homes is such an environmental requirement with which elderly people could improve their quality of life and even acquire the effects of healing. As an optimal element of ensuring amenity, nature is a general hospital that heals human beings physically and mentally. In this vein, the investigator drew out the frame of analysis, namely emotional/healing/relating amenity, by means of theoretical examination of such natural elements as water, light, soil/stone, and plant. And on the basis of the drawn amenity, the investigator examined the application of natural elements to study subjects in order to analyze the ensured amenity. Study findings show that the existing nursing homes have ensured healing amenity sufficiently, but they are unsatisfactory in ensuring emotional and relating amenity. Based on interview survey, the investigator suggests that the introduction of natural elements into nursing homes such public space as mediation space, interaction space, and rest places to ensure emotional/healing/relating amenity must be ideally equipped with the formation of outdoor forest in which water, light, soil/stone, and plant get joined together, rather than Introducing a single element respectively. In addition, the plan of construction of nursing homes must take residing elderly people's emotional/healing/relating amenity into account on the basis of physical amenity.

The Study on Desired Image and Fabric Preference of Woman College Student for Apparel (여자 대학생의 의복 추구 이미지와 소재 선호에 대한 연구)

  • 정인희
    • The Research Journal of the Costume Culture
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    • v.9 no.4
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    • pp.629-638
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    • 2001
  • This study was intended to identify the desired image and fabric preference of woman college student for apparel and the relationship between these variables. Data were collected by questionnaire distributed to 260 woman college students through August to September of 2000. After eliminating incomplete questionnaires, 236 were analyzed. The most desired image was neat, and the most preferred fabric was natural fiber textile in fiber contents and light and soft in fabric sensation. The avoided image was masculine, and the negative sensation was heaviness. As a result of factor analysis, 7 factors -cute, intellectual, animate, neat, mature, sporty, sexy- were determined in image. And 8 factors -soft, durable, flat, rigid, light, bulky, heavy, pliable- were determined in fabric sensation. These factors explained large percentage of variance respectively. Multidimensional scaling was employed to analyze the relationship between desired image and fabric preference. Two dimensions were accepted to interpret the relationship. One of the results showed the closeness among the natural fiber textile, lightness, durability and natural image. And the short distance among the blended textile, elasticity, warmness and sporty image was presented.

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Dyeing of Natural Fibers with Extract of Ginkgo biloba Bark(II) - Fastness and Functional Characteristics of Dyed Fabrics - (은행나무 수피 추출액에 의한 천연섬유의 염색(II) -염색물의 견뢰성 및 기능성-)

  • 최순화;조용석
    • Textile Coloration and Finishing
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    • v.13 no.6
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    • pp.359-366
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    • 2001
  • In this study, wool, silk and cotton fabrics were dyed with natural dyes derived from Ginkgo biloba bark using various mordants, and their dyeabilities were discussed. Additionally the fastness to washing, perspiration, light, rubbing, and drycleaning were investigated. And the effects of bacteria reduction and UV-B protection rate were also checked. The optimum dyeing condition of the colorants extracted from the Ginkgo biloba bark was three repeated dyeing at$95^\circ{C}$ for 1 hr. by using post mordanting. Mordanting improved the fastness to washing, Perspiration and drycleaning, but the fastness to light and rubbing were not increased. The bacteria reduction rate of the wool fabric increased drastically by dyeing with extract of Ginkgo biloba bark and its effect maintained after repeated washing and drycleaning. UV-B protection rate of the natural fibers increased by dyeing with extract of Ginkgo biloba bark and the dyed wool fabric was the best of the three fabrics.

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Dyeing of Natural Fibers with Extract of Ginkgo biloba Bark(Ⅱ) - Fastness and Functional Characteristics of Dyed Fabrics - (은행나무 수피 추출액에 의한 천연섬유의 염색(Ⅱ) - 염색물의 견뢰성 및 기능성 -)

  • Choe, Sun Hwa;Jo, Yong Seok
    • Textile Coloration and Finishing
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    • v.13 no.6
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    • pp.1-1
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    • 2001
  • In this study, wool, silk and cotton fabrics were dyed with natural dyes derived from Ginkgo biloba bark using various mordants, and their dyeabilities were discussed. Additionally the fastness to washing, perspiration, light, rubbing, and drycleaning were investigated. And the effects of bacteria reduction and UV-B protection rate were also checked. The optimum dyeing condition of the colorants extracted from the Ginkgo biloba bark was three repeated dyeing at 95℃ for 1 hr. by using post mordanting. Mordanting improved the fastness to washing, Perspiration and drycleaning, but the fastness to light and rubbing were not increased. The bacteria reduction rate of the wool fabric increased drastically by dyeing with extract of Ginkgo biloba bark and its effect maintained after repeated washing and drycleaning. UV-B protection rate of the natural fibers increased by dyeing with extract of Ginkgo biloba bark and the dyed wool fabric was the best of the three fabrics.