• Title/Summary/Keyword: summer

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A Study on Anti-Condensation of the Apartment Building in Summer (공동주택의 하절기 결로 방지에 대한 연구)

  • Kim, Seung-Beum;Seo, Hee-Chang;Kim, Joo-Heyng;Kim, Jae-Jun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.11a
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    • pp.17-18
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    • 2012
  • Moisture condensation leading to defects that occur repeatedly in the winter, and recognize the same method, the problem of the other buildings in the same area again and again, a vicious cycle that occurs due to the temporary lack of systematic research and processing way of coping has been recurring. In this study, as warming progresses, more inside the air-conditioned summer season due to an increase in the ambient temperature of the condensation phenomenon to happen about summer wall condensation phenomena are expected to analyze the case of a building to prevent condensation and for insulation designs are proposed.

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Avifauna on the Areas Round the Atomic Power Plant (原子力 發電所 周邊의 鳥類相)

  • Kwon, Ki-Chung
    • The Korean Journal of Ecology
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    • v.14 no.4
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    • pp.469-479
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    • 1991
  • The abundance and local distribution of birds around the three atomic power plants were studied during summer in 1998 and winter 1989. It was particularly pointed out how to determine species diversity indices, rarefaction model appeared and habitat use. During the study over 2,200 birds were censused; black-tailed gull, terek sandpipper, asian wandering tattler and australian curlew accountedfor over 76% of the observed birds in summer. Black-tailed gull, black-headed gull, mallard, ancient murrelet and tree sparrow accounted for 76% of the observed birds in winter. overall, 53 species were occurred ; 23 have been observed on yonggwang-gun, 16 used on ulchin-gun, 12 used on kyungju-gun in summer. 18 on yonggwang-gun,,14 on ulchin-gun,12 on kyungju-gun in winter respectively. These three habitats in terms of their of species richness were computed as follows; yonggwang-gun has the highest richness with an expected species number of 17.5 as the same as two season. Kyungju-gun has the lowest with an expected species number of 8.2 in summer and 11.5 in winter.

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Changes of plasma melatonin level and testis weight in the seasonal light-period

  • Han, Sang-Zin
    • Proceedings of the Korea Society of Environmental Toocicology Conference
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    • 2003.05a
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    • pp.160-160
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    • 2003
  • Plasma melatonin in the seasonal light-period is circadian rhythmically secreted. Maximal secretion showed at 14 o'clock in summer- and winter-like period, but minimal secretion showed at 5 o'clock in summer-like period and at 8 in winter-like period. These times of minimal secretions were at the beginning of light period. Plasma melatonin in the light period is secreted 62.5% more than in the dark period in summer-like period and 45.9% more in winter-like period. Total plasma melatonin in winter-like period is secreted 56.5% more than in summer-like period. The weights of testis(-20.8%) and body(-7.1%) were reduced in the winter-like period. By the increase of plasma melatonin in mice, body- and testis-weights are decreased, on the contrary by the decrease of plasma melatonin in mice, body and testis weights are increased. In view of the results so far achieved melatonin changes on the body weight and reproductive organ in mice. It is presumed that melatonin effects on the metabolism and sex hormone.

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Changes of Plasma Melatonin Level and Testis Weight in Mice in the Seasonal Light-period (인위적인 계절적 광주기에서 쥐에 나타나는 멜라토닌 분비양상과 정소크기변화 조사)

  • 한상진
    • Environmental Analysis Health and Toxicology
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    • v.18 no.1
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    • pp.57-61
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    • 2003
  • Plasma melatonin in the seasonal light-period is circadian rhythmically secreted. Maximal secretion showed at 14 o'clock in summer- and winter-like period, but minimal secretion showed at 5 o'clock in summer-like period and at 8 in winter-like period. These times of minimal secretions were at the beginning of light period. Plasma melatonin in the light period is secreted 62.5% more than in the dark period in summer- like period and 45.9% more in winter- like period. Total plasma melatonin in winter-like period is secreted 56.5% more than in summer-like period. The weights of testis (-20.8%) and body (-7.1%) were reduced in the winter-like period. By the increase of plasma melatonin in mice, body - and testis -weights are decreased, on the contrary by the decrease of plasma melatonin in mice, body and testis weights are increased. In view of the results so far achieved melatonin changes on the body weight and reproductive organ in mice. It is presumed that melatonin effects on the metabolism and sex hormone.

A study on the Thermal Environment of Open Spaces on Campus during Summer (대학(大學) 캠퍼스내(內) 야외공간(野外空間)의 여름철 미기후(微氣候)에 관한 연구(硏究))

  • Suh, Eung-Chul
    • Journal of the Korean Institute of Educational Facilities
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    • v.7 no.2
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    • pp.15-21
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    • 2000
  • Microclimate of open spaces on campus tends to be important because it is related with people's comfort and it can influences their behaviors in outdoor during summer. Climatic components for 4 points, concrete paving, lawn, landscaped pergola and nearby forest on university campus were measured and evaluated. The results show that the air temperatures on paving such as concrete and lawn under the direct solar radiation were higher than the temperatures of canopied spaces such as pergora and nearby forest by up to $7^{\circ}C$ during summer. Characteristics of temperatures on lawn were similar to those on concrete paving. After evaluation, concrete surface was worst among 4 points, while landscaped pergola was the most effective facility in terms of thermal comfort during summer.

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A Study on Color Preference of Children's Wear (아동복 색채선호에 대한 조사연구)

  • 추선형
    • Journal of the Korean Society of Costume
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    • v.42
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    • pp.59-68
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    • 1999
  • The purpose of this study is to survey the color preference of mothers for the clothing of their children whose clothing is usually chosen by their mothers. The survey was performed by showing 60 color samples to provide the useful data for the fashion color planning. The result of this study shows that the prefe-rences in hue and tone are different mainly by season. The most preferred colors are yellow for boys and pink for girls in spring white in summer-beige in fall and black in winter. The most preferred tones for boys are pale in spring and summer dull in fall and dark in winter For girls light tone is most preferred in spring and pale in summer bright in fall and dark in winter Analysis of tone preferences in 6 colors shows that bright and clear are commonly preferred tones for children's clothing. Pale light vivid tones of yellow green and blue are preferred for girls and boys. Dark purple is preferred in fall and winter while pale tone is preferred in spring and summer. Red is preferred for girls especially in pale bright vivid tones while dark grayish and deep tones are preferred for boys in fall and winter.

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Changes in Skin Temperature and Physiological Reactions in Murrah Buffalo During Solar Exposure in Summer

  • Das, S.K.;Upadhyay, R.C.;Madan, M.L.
    • Asian-Australasian Journal of Animal Sciences
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    • v.10 no.5
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    • pp.478-483
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    • 1997
  • Six adult female Murrah buffaloes of about 12 years were exposed to solar radiation during summer when minimum and maximum ambient temperatures were 27.1 and $44.1^{\circ}C$, respectively. The skin surface temperature at forehead, middle pinna, neck, rump, foreleg, hind legs were recorded using non-contact temperature measuring instrument and respiration rate and rectal temperature were measured throughout the 24 hours starting from 6:30 AM. The diurnal fluctuations and temperature gradients have been reported for buffaloes. During summer when ambient temperature and solar radiation was maximum, adult buffaloes were not able to maintain their thermal balance even after increasing the pulmonary frequency 5 - 6 times. The changes in skin temperature at various sites indicate that the temperature of skin surface not only varies in relation to exposure but also due to water diffusion and evaporation.

Relationships between Summer Droughts in Korea and Activities of Tropical Cyclones over the Northwestern Pacific (한국 여름가뭄과 북서태평양 태풍활동의 연관성)

  • Choi, Ki-Seon;Kim, Do-Woo;Byun, Hi-Ryong
    • Atmosphere
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    • v.18 no.4
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    • pp.279-286
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    • 2008
  • In the tropical western Pacific (especially, west of 135oE, including South China Sea and the Philippines), during boreal summer, it was found that a strong correlation exists between the tropical cyclone activity and the drought conditions in Korea. During the summer drought, firstly, there were strong ascending flows over the tropical western Pacific with more tropical cyclone genesis, and to compensate for this, descending flows develop in the mid-latitudes, thereby causing drought; in other words, a secondary circulation is formed between the tropical western Pacific and mid-latitudes of East Asia. Secondly, the developments of both the subtropical western Pacific high and the Manchurian low are suppressed. As a result, both the land-sea pressure gradient and the southerly flow from low-latitudes to Korean area are also weakened, which reduces approaches of tropical cyclones to this area despite the high frequency of their geneses.

Studies on Embryo Transfer in Rabbit I. Effect of Season on Ovulation and Pregnancy Rate (가토의 수정란이식에 관한 연구 I. 계절이 배란율과 수태율에 미치는 영향)

  • 최화식;임경순;이용빈;정구민;박영식
    • Journal of Embryo Transfer
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    • v.2 no.1
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    • pp.33-35
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    • 1987
  • This study was carried out to investigate the seasonal effect on the recovery rate of embryos in donors and on the conception rate in recipients following embryo transfer. The results obtained from this experiment were summarized as follows: 1. The ovulation point in winter and summer was 28.6 and 28.6, respectively. There was no difference in ovulation point between two seasons. More embryos recovered in the winter (27,0) than the summer (20.9). 2. The number of CL, unruptured follicle, hemorrhagic follicle, young born and pregnancy rate in the winter were 6.0,4.8,1.5,1.8 and 75%, and those in the summer were 2.9,5.7, 3.8, 2.2 and 46.7%, respectively. The rate of synchronization of recipients in the winter showed better results than that in the summer.

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Community Patterning of Benthic Macroinvertebrates in Slightly and Moderately Polluted Streams in Spring and Summer

  • Kim, Dong-Hwan;Cho, Hyun-Duk;Cho, Woon-Seok;Song, Mi-Yong;Chon, Tae-Soo
    • Korean Journal of Ecology and Environment
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    • v.43 no.4
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    • pp.477-491
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    • 2010
  • Benthic macroinvertebrates were collected two times from 116 sites at the $1^{st}{\sim}4^{th}$ order streams in forest areas in Gyungsang province in late spring and late summer. The sample sites belonged to slightly and moderately polluted states. When communities were classified by the Self-Organizing Map (SOM), the gradient was observed according to degree of pollution. Within clusters of slightly polluted sites, however, seasonality was further observed. Scrapers, gatherer-collectors, and filterer-collectors were abundantly observed in late spring while shredders appeared more in late summer. The number of predator species increased in late summer. Behavior types were mostly clingers in two seasons. Community compositions at the moderately polluted sites were not much differentiated in different seasons. Gatherer-collectors and burrowers were dominantly collected in both seasons.