• 제목/요약/키워드: MICROCLIMATE

검색결과 356건 처리시간 0.027초

Thermal Comfort Aspects of Pesticide-protective Clothing Made with Nonwoven Fabrics

  • Choi Jong-Myoung;Tanabe Shin-Ichi
    • International Journal of Human Ecology
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    • 제3권1호
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    • pp.55-72
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    • 2002
  • The purpose of this study was to evaluate the thermal resistance of pesticideprotective clothing and to investigate its subjective wear performance. Three different nonwoven fabrics, which provide barrier properties against water and pesticide, were used to manufacture the experimental clothing: spunbonded nonwoven (SB), spunbonded/meltblown/spunbonded nonwoven (SM), and spunlaced nonwoven (SL). The thermal insulation values of the experimental clothing were measured with a thermal manikin, and other wear trials were performed on human subjects in a climate chamber at $28^{\circ}C$, with 70% R.H. and air movement at less than 0.15m/s. Our results found that the thermal resistance was lower in the SB experimental clothing than in the others; that the mean skin temperature of subjects who wore the experimental clothing made with SL was significantly lower than that of subjects who wore the SB and SM clothing; and that the microclimate temperature and humidity with SB were significantly higher than that of the others. Overall, the experimental clothing made with SL was more comfortable than the others in terms of subjective wear sensations.

개의 만성 외이염 수술적 치료예 (The Result of Surgical Treatment of Chronic Otitis Externa in Dog)

  • 이상곤
    • 한국임상수의학회지
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    • 제14권1호
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    • pp.99-102
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    • 1997
  • The otitis externa frequently occurs in dog. The cause is mostlyan increase of bacterias (for example Staphylococcus spp. Streptococcus spp. and Psudomonas spp.) and/or yeast fungi (especially malassizia pachydermatis) and/or infestation with parasites (otodecits cynotis) which growth is promoted by a change of the microclimate in the external auditory meatus. The worse therapeutic results of medicine is explained by an intolerance and resistence of microorganisms which was often observed. In this study of dog with otitis externa developed a generalised pyoderma. This, in fact, could be a causative factor in the development of otitis externa and its recurrence. Concluded, the surgical treatment is the best method for eliminating chronic otitis externa.

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옥외에서 원적외선 방사직물 착용시 온열생리반응 (Thermo Physiological responses of Far Infrared Ray Radiation Fabrics at outdoor in summer)

  • 송명견;안필자;최정화
    • 한국농촌생활과학회지
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    • 제7권2호
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    • pp.121-128
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    • 1996
  • This study was performed to define the effects of Far Infrared Ray Radiation Fabrics as summer garments during outdoor work by human trial. One healthy male subject was volunteered for this study. Experimental garments consisted of three kinds of trousers (Cotton, Cotton/linen blended, Far Infrared Ray Radiation Fabric/wool blended) and basic garments (panty, socks, shirts, and dress shirts). The measurements were rectal temp., skin temp., microclimate inside clothing, heart rate, subjective sensation etc. The results were as follows : 1. Rectal temperature showed the lowest in Far Infrared Ray Radiation Fabrics among 3 garments. 2. Skin temperature (forehead, chest abdomen temp.) and mean skin temperature were lower in Far Infrared Ray Radiation Fabrics than in others, especially during early stage of work. 3. Heart rate showed lower value in Far Infrared Ray Radiation Fabrics than in others but there was no significance among the garments. 4. Humidity inside clothing and total weight loss showed the highest value in Far Infrared Ray Radiation Fabrics.

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동적 상태에서 주관적 착용감에 영향을 미치는 직물의 수증기상태의 수분전달 특성 (Moisture Vapor Management Properties of Fabrics Determining Human Sensorial Comfort in Transient Conditions)

  • 유신정
    • 한국의류학회지
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    • 제24권7호
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    • pp.1073-1080
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    • 2000
  • Moisture transfer property of fabrics has known as one of the most important factors deciding wearer's subjective comfort not only thermally but also of sensorial. As a decisive property of fabric materials in determining human sensorial comfort, moisture vapor management property of heat resistant workwear material was examined in terms of increasing and decreasing rate and maximum value of relative humidity in the microclimate under the sweat pulse situation. An unique moisture regulation index, B$_{d}$, was calculated from the measurements using a novel dynamic sweating hot plate apparatus and was used to assess the buffering capacity of fabrics against a moisture vapor sweat pulse.e.

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선형구조방정식을 이용한 의복착용쾌적감 영향요인 분석 (An Analysis of Effective Variables on Clothing Wear Comfort Using Linear Structural Equation)

  • 이은주;조정숙;이정주;최종명;조길수
    • 한국감성과학회:학술대회논문집
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    • 한국감성과학회 1997년도 한국감성과학회 연차학술대회논문집
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    • pp.47-52
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    • 1997
  • This study was carried out to investigate effects of fabric properties and the changes of microclimates on comfort sensations and to identify effective varuables on clothing wear comfort sensations. A wied range of nontreated and functionally treated woven fabrics, knits, and nonwoven fabrics and test garments made of them were used as specimens. Linear structural equation was used to analyze causal relation among the variables on a path diagram. The results were as follows: 1. Almost of causal relations among variables were significant excdpt the effects of fabric properties including air permeability and water-vapor permebility on the changes of microclimate temperature. 2. Fabric properties were most effective variables on clothing wear comfort sensations including thermal sensation, subjeceive wettedness, and overall comfort and therefore comfort sensations and fabric properties were identified for improving clothing comfort.

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Trace gas법에 의한 의복의 환기 양상의 평가 (Assessment of clothing ventilation by a trace gas method)

  • 추미선
    • 한국의류학회지
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    • 제21권8호
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    • pp.1387-1395
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    • 1997
  • Effects of the ambient air temperature and the opening position on the pattern of the clothing ventilation of a thermal manikin wearing an impermeable blouse were investigated by the trace gas method. Under an isothermal condition, the ventilation was governed by diffusion, and the ventilation rate through the wrist-openings was greatly affected by the distance from the openings. Under non-isothermal conditions, however, the ventilation was accelerated by the convection driven by the temperature gradient between the clothing microclimate and the surrounding air; the greater the temperature gradient, the greater the ventilation. Even though it was certainly affected by the ambient air temperature, the ventilation rate was more significantly influenced by the position of openings. The ventilation patterns at the arm and the body were distinctive.

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이동식 천막형 일광차단장비의 개발 (Development of Movable Sunshade Tent)

  • 김경수;최정화
    • 대한가정학회지
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    • 제42권1호
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    • pp.99-113
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    • 2004
  • To protect farmers from solar radiation and UV, the movable sunshade tent was designed and its protection efficiency was measured in the artificial chamber and outdoors. Sunshade tent and the existing farmer's hat were examined. The results were as followes; Heart rate, total body weight loss and temperature of clothing microclimate on the chest and the back were lower in using sunshade tent than those in wearing existing hat in two experiments. In subjective sensation, subjects answered to feel significantly hotter and more uncomfortable in wearing existing hat in two experiments. Rectal temperature was significantly lower using the sunshade hat in experiment at outdoors(p<0.001).

선태식물을 이용한 인공구조물 녹화가능성에 관한 연구 (A Study on the Use of Bryophyte in Greening Man-made Structures)

  • 김용규;장혜숙;김용
    • KIEAE Journal
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    • 제7권3호
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    • pp.21-30
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    • 2007
  • This research focuses primarily on the feasibility of applying bryophyte to man-made structures in modern urban environment. The study is based both on the role of bryophyte known in the process of the naturalization that life has come on the land and the physiological and ecological characteristics of bryophyte. The primary characteristics of this species lie in its desiccation-tolerance and poikilohydry that supports its enduring survival even under the desperate environmental conditions. The monitoring of applying bryophyte to man-made structures has shown us that bryophyte could control microclimate conditions, help to mitigate flood by reducing runoff, and lessen thermal conductivity, etc. The application of bryophyte to man-made structures has just started since 2002. Even though efforts to use bryophyte in greening man-made structures in Japan and Korea have resulted in both successes and failures, it is noticeable that there has been quite much technical progress in using this unique plant species.

군락상태에 있는 초본식물의 엽온의 일조변화 (On the Diurnal Change of Leaf Temperature of Herbaceous Plants in Plant Community)

  • 임양재
    • Journal of Plant Biology
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    • 제17권3호
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    • pp.107-112
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    • 1974
  • Leaf temperature is complicated with the microclimate and the dry matter production in a plant community. But a daily change of leaf temperature varying by the locality in plant body or plant community is not yet clear. To resolve such a question, following experiment was designed; Helianthus tuberosus L., Glycine max L., Zea mays L., Impomoea batatas Lam., and Cucurbita moschata var. toonas Makino were planted in the different sandy loam, $2m{\times}2m-quadrat$, which has a eastern, southern, western and northern edge. In each plot 17-25 plants were planted and the distances between individuals spaced uniformly. And leaf temperature were measured by MR3-C type thermistor from 14th May through 20th August. It is seems that the upper leaf is affected by solar radiation, the lower leaf by released heat from the earth and the middle leaf by the conditions of both zones. Measuring the temperature of a leaf that is on terminal, central, left and right margins and base part, temperature of control plant in a leaf was sloped during about two hours from noon. It is noticeable as a "noon sleeping" phenomenon.henomenon.

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Guidelines for Tall Buildings Development

  • Al-Kodmany, Kheir
    • 국제초고층학회논문집
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    • 제1권4호
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    • pp.255-269
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    • 2012
  • Tall buildings' implementation has often lacked urban design and architectural guidance. There are many examples of tall buildings that have been inappropriately located, designed, and built, and consequently dissatisfaction with high-rise development is wide-spread. This paper attempts to provide extensive urban and architectural guidelines in order to manage cityscape and to ensure safe and healthy living. Through recommendations on design and layout of tall buildings and open spaces the guidelines seek enhancing the visual experience, improving the microclimate conditions, and fostering active social life. These guidelines help in providing enjoyable urban experiences through the examination of spatial relationships, human scale, genius loci, perceptual characteristics, local identity, built heritage, economic activities, and social life.