• Title/Summary/Keyword: 오리과

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Fungal flora of $Ull\check{u}ng$ Island (II) -on some resupinate fungi­ - (울릉도의 균류상 (ll) -수종 배착성균류에 대하여-)

  • Jung, Hack-Sung
    • The Korean Journal of Mycology
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    • v.19 no.1
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    • pp.1-10
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    • 1991
  • Fresh materials were obtained during collection trips to $Ull\check{u}ng$ Island in October, 1989, and August, 1990. Among them, some resupinate fungi were identified. Seven fungi were confirmed new in Korea and are recorded here with descriptions. They are Gloeocystidiellum karstenii, Peniophora lilacea, Phlebia cremeo-alutacea, P. deflectens, P. livida, Resinicium bicolor, and Hymeno­chaete corrugata.

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Vegetation Distribution Near Abandoned Metalliferous Mines and Seed Germination Properties of Woody Plants by the Contaminated Soils (폐광산 주변의 목본 식생 현황 및 오염 토양에 대한 목본 종자의 발아 특성)

  • Seo, Kyung-Won;Kim, Rae-Hyun;Koo, Jin-Woo;Noh, Nam-Jin;Kyung, Ji-Hyun;Kim, Jeong-Gyu;Son, Yo-Whan
    • Korean Journal of Environmental Agriculture
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    • v.25 no.1
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    • pp.47-57
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    • 2006
  • This study was carried out to select the Eco-tree for successful phytoremediation of abandoned metalliferous mines. We examined vegetation and heavy metal concentrations of woody plants in abandoned mining areas, and also conducted seed germination and seedling growth experiment on contaminated soils from Gahak and Geumjeong mines. Pinus densiflora, Robinia pseudoacacia, Lespedeza bicolor and Alnus japonica showed high frequency in the survey areas and had high heavy metal concentrations compared to other species. Heavy metal concentrations were higher in roots than in leaves and stems. The seed germination rate was in the order of P. densiflora, L. bicolor, R. pseudoacacia, and Alnus japonica from the incubactor and greenhouse experiment. In the incubator experiment germination rate was highest in the control soil for P. densiflora and A. japonica. Germination rate of P. densiflora was highest on the 100% contaminated soil for Gahak mine while germination rate decreased with increased percentage of contaminated soil for Geumjeong mine. In the greenhouse experiment germination rate was lowest on the 40% contaminated soil for Gahak mine while germination rate was lowest on the 20% contaminated soil for Geumjeong mine and increased with increased percentage of contaminated soil. Shoot growth was highest for L. bicolor while root growth was highest for R. pseudoacacia except for 20% contaminated soil in Geumjeong mine.

Evaluation of Korean Native Ducks on Production Efficiency Factor, Carcass Yield, Partial Meat Ratio and Meat Quality with Weeks (토종오리 대형종의 주령별 생산지수, 도체 수율, 부분육 비율 및 육질 평가)

  • Heo, Kang-Nyeong;Kim, Hak-Kyu;Kim, Chong-Dae;Kim, Sang-Ho;Lee, Myeong-Ji;Choo, Hyo-Jun;Son, Bo-Ram;Choi, Hee-Cheol;Lee, Sang-Bae;Hong, Eui-Chul
    • Korean Journal of Poultry Science
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    • v.40 no.2
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    • pp.121-127
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    • 2013
  • This work was carried to evaluate production efficiency factor, carcass yield and meat quality with weeks of Large-type Korean native ducks. Korean native ducks (n = 90) from National Institute of Animal Science (RDA, Korea) were used in this work. Ninety ducks were divided into 6 groups (15 birds/group) and were fed with meat-type duck diets for 8 wk old. When ducks grew at specific wk (6, 7 and 8 weeks), 2 ducks per group were slaughtered at 6, 7 and 8 wk old. Production efficiency factor, carcass yield, partial meat and meat quality were researched in this work. There was no significant difference on livability with weeks, but body weight at 7 and 8 wk old was higher than that at 6 wk old (P<0.05). Feed conversion ratio at 6, 7 and 8 wk old were 2.25, 2.69 and 3.21, respectively, so there was significant difference with weeks (P<0.05). Production efficiency factor at 6, 7 and 8 wk old were 256.6, 199.8 and 153.0, respectively, so there was significant difference with weeks (P<0.05). Carcass yield at 8 wk old was higher than that at 6 and 7 wk old as 73.5% (P<0.05). Lightness at 6, 7 and 8 wk were 41.8, 39.0 and 38.1, respectively, and that at 6 wk old was the higher than other weeks (P<0.05). There was no significant difference on redness at 6, 7, and 8 wk old (P>0.05) and yellowness at 8 wk old was higher compared to other weeks (P<0.05). Cooking loss was the highest at 6 wk old as 31.6%, but water holding capacity was the highest at 8 wk old (P<0.05). There was no significant difference on shear force among weeks. pH at 6 wk old was the lower than that of other weeks as 5.84. Moisture content significantly decreased with weeks (P<0.05) and fat content at 8 wk was the highest as 1.88% (P<0.05). Protein content significantly increased with weeks until 20.9% at the age of 8 wk (P<0.05). Ash content at 7 and 8 wk old was the higher than that at 6 wk old (P<0.05). There was no significant difference on juiciness, tenderness, and flavor with weeks. Finally, these results may provide that shipping time at 7 wk old preferred to that at 6 and 7 wk old, but further research was needed because of deficiency of data.

Narration Drawing & Narration Painting (서사묘${\cdot}$서사회 [敍事描${\cdot}$敍事繪])

  • Baek, Jun-Gi
    • Cartoon and Animation Studies
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    • s.5
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    • pp.460-465
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    • 2001
  • 글과 그림 사이에서 진동하는 상호보완적 절층주의로부터 벗어나, 텍스트와 이미지의 벽을 넘어서서 신개념의 그래픽 문법으로 형성되는 ‘제3의 지지체(支持體, referance)'이길 바란다. 더 나아가서는 새로운 장르 개념의 ’참조들${\cdot}$frame work'이 조성되길 바라며 작업을 지속한다. 그 방버론의 적용으로는 보여지거나 인식되는 사물과 사태를 ‘서사적 조망${\cdot}$Narration View'으로 회유하여 서사묘${\cdot}$Narration Drawing, 혹은 서사회${\cdot}$Narration적 담론과 리사이틀의 체계를 구축하고자 한다. 따라서 나의 작업은 개념도 실재(행동)도 아닌 양자의 삼투막(?透幕)과도 같은 것으로 최소한의 표현, 그리고 그에 상응하는 선택과 결정이 주어지게 된다. 마치도 ’평면조건‘위에서 글도 아닌 도상적 스키마의 조그마한 끄나풀 하나를 붙들고 연명하는 미물의 절실함이 그것이리라. 또 한편에서는 글이기도 그림이기도한 한 ’이코노텍트성 Iconotextuality'의 보편적 열람성과 보존성의 현전의 세속적 희열과 자유로움을 느낀다. 일품 회화의 오리지날리티로 벗어나 ‘원고개념’을 전제한 작품제작의 출발은 A4 배상용지 위에서 실현된다. 끊임없이 증식되는 생물학적 상상력의 구축은 매카닉한 기계류의 반복과 중첩 이미지, 확대와 축소의 개념적 확산, 용품과 도구 tool character에 의한 드로잉의 산출 및 페인팅의 점착성으로 이어진다. 실제의 프레임과 패널, 액틀을 쓰지 않는 연유는 좀더 벽에 밀착하여 붙이기를 원하기 때문이다.

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Computational Analysis of an LOx Supply Line System of an Liquid Rocket Engine (액체로켓엔진 산화제 배관 시스템 전산유동해석)

  • Moon, In-Sang;Moon, Il-Yoon;Lee, Soo-Yong
    • Journal of Astronomy and Space Sciences
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    • v.26 no.4
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    • pp.693-702
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    • 2009
  • A computational fluid analysis was performed on an LOx line system of a liquid rocket engine. The model was created with 3D CAD and imbedded to the 3D CFD program. Before the full scale analysis on the system was carried out, each components with simplified models was analyzed to save time and cost. As a result, the inlet pressure of the gas generator should be compensated with a certain device unless the inlet pressure of the line system is sufficiently high. The flow pattern of the exit of the system was dependant upon the location of the orifice as well as the size. As a whole the line system analyzed met the requirements, and will be tested and confirmed after being manufactured.

Case Studies of Enhanced Geothermal System: Fenton Hill in USA and Hijiori in Japan (인공저류층 지열시스템(EGS) 연구사례: 미국 Fenton Hill과 일본 Hijiori 사례 연구)

  • Park, Eui-Seob
    • Tunnel and Underground Space
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    • v.23 no.6
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    • pp.547-560
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    • 2013
  • The importance of renewable energy has increased continuously due to the energy insecurity and the necessity of reducing carbon dioxide which is causing global climate change. In such a situation, the Pohang Enhanced Geothermal System (EGS) power plant project which is launched in December 2010 shall be a new opportunity for the development of EGS related technologies in Korea. In this paper, the case studies of Fenton Hill project in the USA and Hijiori project in Japan are introduced in order to help a part of the domestic EGS demonstration project. As a result, it could be helpful to minimize the trial and error of the domestic EGS project by acquiring the achievements and limitations of existing EGS projects.

Influence of Lipids on Blood Cholesterol Level of Chicks and Ducks (닭과 오리의 Blood Cholesterol Level에 미치는 지방의 영향)

  • Chung, Yung-Tai;Nam, Hyun-Keun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.7 no.2
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    • pp.29-34
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    • 1978
  • It was conducted to find out that the influence of lipids on blood cholesterol level of chicks and ducks. In this experiments, a comparative study was carried out using chicks and ducks divided into four groups with various diet for the period of four weeks. The results were as follows: 1. The mean value of hematocrit was significantly lower for the chicks fed sesame oil and soybean oil than the chicks fed duck meat. The value of hematocrit was higher for the ducks fed sesame oil, soybean oil and duck meat than for the control group. 2. Blood glucose level was higher for the ducks group than the chicks group. It was lower blood glucose level for the chicks and ducks fed duck meat than any other groups. 3. Blood cholesterol level was lower for the chicks fed sesame oil, soybean oil, and duck meat than for those fed the basal diet(control group). In the ducks group, blood cholesterol level was high. But in the liver organ, it was lower blood cholesterol level for the chicks and ducks fed sesame oil, soybean oil and duck meat, respectively than for those fed the basal diet(control group). 4. Phospholipid of the chicks which were control groups was lower value than for those fed sesame oil and duck meat fed, the value of phospholipid was higher value.

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Investigation of Duck Production Distribution in Duck Housing As a Function of Breeding Period (사육기간에 따른 오리사 내 오리 생산성 분포도 조사)

  • Choi, In-Hag
    • Journal of Environmental Science International
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    • v.30 no.3
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    • pp.289-293
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    • 2021
  • This study was conducted to investigate the distribution of duck production in duck housing as a function of the breeding period. The items in duck production distribution included body weight, feed intake, feed conversion ratio, and average duck production. All data were based on eight cycles (June and December, 2017; February, June, August, September, and November, 2018; February, 2019) at Farm Site 1 through 7. The most optimal results in the duck production distribution were observed at Site 1 for weight gain, feed intake, and feed efficiency. This could be explained by the fact that Site 1 was well managed in environmental improvement and sustainability. Based on these data, selective alternatives to improve duck production in duck farms are recommended as follows: first, proper management and recording of litter used as a flooring material are required, and second, continuous management such as temperature, relative humidity and ventilation is needed. Lastly, it is necessary to change duck facilities by introducing environmental management techniques. Furthermore, efforts to improve the overall facilities and management of duck breeding farms through additional field studies are needed in the future.

Effects of Using Hydrogen Water on Duck Production in A Field Study (수소수 급수시 오리생산성에 미치는 영향 -현장연구를 중심으로-)

  • Chung, Tae-Ho
    • Journal of Environmental Science International
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    • v.31 no.3
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    • pp.291-294
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    • 2022
  • This study was conducted to investigate the effect of hydrogen water on duck production in a field study. A total of 600 one-day-old ducks (Pekin) were randomly allotted to two treatment groups with three replicates each having 100 birds per pen in a completely randomized design. The duck production parameters measured included weight gain, feed intake, and feed efficiency. For duck drinking water, general water supplied from the farm was used as the control, and hydrogen water was supplied by installing a device that generates hydrogen (T1 groups). There was no statistical significance in duck weight gain between the two treatment groups (p>0.05). In addition, no significant difference in feed intake was found in both the control and T1 groups (p>0.05), and the range of values was similar. Feed efficiency was not significant different between the treatment groups (p>0.05), and there was no remarkable difference in the range of vaules. These results indicate that hydrogen water did not influence duck production.

The Flora of Munsu Mt. in Gimpo (김포 문수산의 식물상)

  • Jong-Won Lee;Yu Cheol Park;Seung Se Choi;Shin-Ho Kang
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2020.08a
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    • pp.35-35
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    • 2020
  • 본 연구는 한남정맥의 최 북서쪽에 위치한 경기도 김포시의 문수산(376m) 일원을 중심으로 식물상을 조사하였다. 본 연구에서 확인된 관속식물은 97과, 241속, 340종, 41변종, 6아종, 2품종 등 총 389분류군으로 조사되었다. 특산식물은 병꽃나무, 복사앵도 및 산이스라지 등 6분류군이 확인되었고, 식물구계학적 특정식물은 I등급은 부싯깃고사리, 비목나무, 삿갓사초, 소사나무 등 15분류군, II등급은 꼬리조팝나무, 돌단풍, 피나무, 오리나무 등 6분류군, III등급은 좀작살나무, 좀개미취, 산벚나무, 병아리꽃나무 등 5분류군, IV등급은 복상앵도, 산복사 등 3분류으로 확인되었다. 환경부에서 지정한 외래종 및 생태계교란 야생식물은 가시박, 단풍잎돼지풀, 도깨비가지, 미국쑥부쟁이, 애기수영, 털물참새피 등 53분류분이 확인되었다. 하지만 선행연구에서 조사되었던 멸종위기종 II급인 매화마름과 산림청지정 희귀식물 위기종 깽깽이풀 2분류군이 조사되지 않아 추후 추가 조사 및 유전자원 현지내외 보전대책을 수립해야 할 것이다.

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