• 한국진공학회:학술대회논문집
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• 한국진공학회 2008년도 제34회 동계학술대회 초록집
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• pp.267-267
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• 2008

• Asian-Australasian Journal of Animal Sciences
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• 제29권5호
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• pp.674-680
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• 2016

This study investigated the effects of feeds naturally contaminated with mycotoxins on growth performance, serum biochemical parameters, carcass traits, and splenic heat shock protein 70 (Hsp70) mRNA expression levels in broiler chickens. The efficacy of yeast cell wall (YCW) adsorbent in preventing mycotoxicosis was also evaluated. Three hundred 1-d-old Arbor Acres broiler chicks were randomly allotted to 3 treatments in completely randomized design for 42 d. Each treatment group had 5 replicate pens with 20 birds. The treatments were as follows: i) basal diet (control), ii) naturally contaminated diet (NCD), and iii) NCD+0.2% YCW adsorbent (NCDD). The NCD decreased average daily gain (ADG) (p<0.01) of 0 to 21 d, 22 to 42 d, and 0 to 42 d, and increased feed conversion ratio (p<0.01) of 22 to 42 d and 0 to 42 d. Both the breast meat percentage and thigh meat percentage of the NCD group were significantly higher (p<0.01) than that of the control group on d 21. The NCD group showed significantly increased levels of triglycerides (p<0.05) and cholesterol (p<0.05) on both d 21 and d 42 compared to the control group. However, the NCD significantly reduced (p<0.01) the high-density lipoprotein (HDL) on d 42 compared to controls. Compared with the NCD, supplementation with YCW significantly improved (p<0.01) the ADG of 0 to 21 d and 0 to 42 d, and increased (p<0.01) concentrations of HDL on d 42, and on d 21, and triglycerides (p<0.05) on d 21 and d 42. Supplementation with YCW reduced (p<0.01) the breast meat percentage, the thigh meat percentage, the concentrations of cholesterol (p<0.01) and the low-density lipoprotein (p<0.05) on d 21, and improved (p<0.01) the splenic Hsp70 mRNA expression levels compared with the NCD group. The results of this study indicated that feeding NCD for 42 d had adverse effects on broiler chickens, and that YCW might be beneficial in counteracting the effects of mycotoxins.

• 한국환경복원기술학회지
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• 제14권2호
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• pp.97-105
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• 2011

This study was carried out to investigate vegetation and tree vitality of Berchemia berchemiaefolia habitat to recommend basic information for synecological characteristics. Totally 9 vegetation data were collected and analyzed. And one plant community (Quercus serrata-Berchemia berchemiaefolia community) including 43 families 66genera 72 species 8 varieties and 3 forma was differentiated. Quercus serrata-Berchemia berchemiaefolia community was subdivided into Typical subunit and Quercus mongolica subunit. Species showing the higer r-NCD value in the plant community were Berchemia berchemiaefolia, Quercus serrata, Lindera obtusiloba, Fraxinus rhynchophylla, Acer pseudo-sieboldianum, Corylus heterophylla var. thunbergii. In tree vitality result, Berchemia berchemiaefolia population containing 35 individual was estimated 3 monitoring categories; 1) General 2) Principal 3) Absolute. These categories frequencies arranged by the order General Monitoring (85.7%; 30 individual), Principal Monitoring (11.4%; 4 individual) and Absolute Monitoring (2.9%; 1 individual).

• 반도체디스플레이기술학회지
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• 제16권4호
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• pp.1-4
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• 2017

Encapsulation of organic based devices is essential issue due to easy deterioration of organic material by water vapor. Atomic layer deposition (ALD) is a promising solution because of its low temperature deposition and quality of the deposited film. Moisture permeation has a mechanism to pass through defects, Thin Film Encapsulation using inorganic / organic / inorganic hybrid film has been used as promising technology. $Al_2O_3$ / Polymer / $Al_2O_3$ multilayer film has shown excellent environmental protection characteristics despite of thin thicknesses of the films.

• 한국환경생태학회지
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• 제21권5호
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• pp.390-399
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• 2007

둑중개가 서식하는 장소의 식생 환경을 분석하였다. 그 결과 물푸레나무군락, 버드나무-신나무군락, 갯버들-달뿌리풀군락, 갯버들군락, 달뿌리풀군락, 아까시나무군락, 고마리-미나리군락이 분류되었다. 특히 물푸레나무군락, 버드나무군락, 갯버들-달뿌리풀군락, 갯버들군락이 고빈도로 관찰되며, 최고빈도 식물군락은 갯버들-달뿌리풀군락이다. 식물사회는 제방권에서 물푸레나무군락과 버드나무-신나무군락으로, 고수부지권에는 갯버들-달뿌리풀군락으로 대표되었다. 하천복원의 적용 우선대상 순위인 식물종의 상대기여도는 제방권에는 느릅나무, 버드나무, 신나무, 갯버들, 물푸레나무 순으로 나타났다. 고수부지권에서는 갯버들, 달뿌리풀, 쑥 순이었다. 식생의 공간분포는 하천 단면에 가장 큰 영향을 받는 것으로 나타났으며, 이는 입지의 물리적 안정성으로 이해되었다. 식물종다양성 역시 입지의 물리적 안정성 정도에 따라 확연히 구별되었다.

• 반도체디스플레이기술학회지
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• 제16권1호
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• pp.1-5
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• 2017

Encapsulation of organic based devices is essential issue due to easy deterioration of organic material by water vapor. Thin layer of encapsulation film is required to preserve transparency yet protecting materials in it. Atomic layer deposition(ALD) is a promising solution because of its low temperature deposition and quality of the deposited film. $Al_2O_3$ or $Al_2O_3/TiO_2/Al_2O_3$ multilayer film has shown excellent environmental protection characteristics despite of thin thicknesses of the films. $Al_2O_3/TiO_2/Al_2O_3$ multilayer and 1.5 dyad layer of $Al_2O_3/polymer/Al_2O_3$ deposited by ALD was measured to have water vapor transmittance rate(WVTR) well below the detection limit($5.0{\times}10^{-5}g/m^2day$) of MOCON Aquatran 2 equipment.

• Weed & Turfgrass Science
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• 제4권3호
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• pp.188-198
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• 2015

본 연구에서는 한국의 동부지역(강원도, 경상남도, 경상북도)의 밭에서 발생하는 잡초의 분포현황 및 생태적 특성을 파악하였다. 조사결과 밭내부(IDF), 밭둑(EDF), 경사면(LS)에서 46과 117속 127종 1아종 22변종이 포함된 150분류군이 조사되었고 밭내부에서 83분류군이, 밭둑에서 133분류군이, 경사면에서 105분류군이 확인되었다. 우점종을 나타내는 상대기여도(rNCD)는 밭내부에서는 쇠비름, 밭둑에서는 바랭이, 경사지에서는 환삼덩굴이 가장 높게 나타났다. 과별로는 국화과, 벼과, 마디풀과, 콩과의 출현빈도가 높았다. 생활형은 Th-R5-D4-e로 특징지어졌으며 세부 서식처도 동일한 양상을 나타내었다. 교란지수는 작물을 직접적으로 재배하는 밭내부가 83.1%로 가장 높았고 다음으로 밭둑 68.4%, 경사면 62.9% 순이었고 귀화율도 밭내부가 28.9%, 밭둑이 22.6%, 경사면 20.0%로 조사되었다. 밭에서 서식처의 안정성은 밭잡초의 교란지수, 귀화율, 제초관리, 토지이용 강도나 인위적 간섭에 의해 영향을 받는 것으로 판단되었다.

• The Korean Journal of Ecology
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• 제26권5호
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• pp.223-236
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• 2003

영종도의 삼림식생은 곰솔군락, 소나무군락, 상수리나무군락, 신갈나무군락, 졸참나무군락, 굴참나무군락, 갈참나무군락, 떡갈나무군락, 소사나무군락, 물박달나무군락의 10개 이차림과 리기다소나무식재림, 아까시나무식재림, 밤나무식재림 등 3개 식재림으로 구분되었다. 상대기여도(R-NCD)에 의한 계층별 우점종은 아교목층에서 상수리나무, 소나무, 굴피나무, 팥배나무, 갈참나무, 관목층에서 진달래, 굴피나무, 졸참나무, 갈참나무, 상수리나무, 초본층에서 그늘사초, 산거울, 진달래, 억새, 주름조개풀 등으로 대부분 건조한 환경에 주로 출현하는 종들로 구성되어 있으며 군락의 층상구조 발달은 빈약하였다. 흉고직경 분포는 각 군락별로 다소 차이가 있었으나 대체로 2∼10 ㎝ 범위의 소경목이 전체의 56%를 차지하였으며 인위적 교란 후 재생과정 중에 있는 식생으로 수령은 40년 이내인 것으로 조사되었다. 군락별 토양환경의 pH는 전체평균값이 4.73(4.53∼5.10)으로 나타났으며, 유기물함량은 산지대에 분포하는 신갈나무군락, 리기다소나무식재림, 밤나무식재림이 산지 능선부나 해안가, 저지의 구릉지에 주로 분포하는 곰솔군락, 소나무군락에 비하여 각각 높게 나타났으며, 유기물함량과 총질소 사이에는 높은 상관관계를 보였다.

• The Korean Journal of Ecology
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• 제21권5_3호
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• pp.633-648
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• 1998

The forest vegetation of Mt. Nam Nature Park was investigated according to the phytosociological method. The vegetation in this study area was classified into 5 communities Quercus mongolica (Acer pseudo-sieboldianum subcommunity, Prunus sargentii subcommunity), P. sargentii, Pinus densiflora (Q. mongolica subcommunity, Stephanandra incisa subcommunity) and 5 afforestations Robinia pseudo-acacia, Populus tomentoglandulosa, P. koraiensis, P. rigida, Metasequoia glyptostroboides. Generally, were P. densiflora forest at the Southern slope and Q. mongolica forest at Northern slope dominant species from the top zone standing in Namsan tower. The dominance sequences on each stratum determined by the R-NCD (Relative net Contribution Degree) showed Q. mongolica and P. densiflora in tree-1 layer, Styrax japonica and Corbus alnifolia in tree-2 layer, S. incisa, S. japonica and rhododendron schlipenbachii in shrub layer, and Oplismenus undulatifolius, Eupatorium rugosum, Parthenocissus tricuspidata and Disporum smilacinum in herb layer. The soil was analyzed to investigate the soil conditions and fertility. The pHs of soil collected in each sites appeared strongly acidic with the range of 4.34 to 5.01 each community and especially, was the lowest value 4.34 in P. rigida afforestation. And Q. mongolica-P. sargentii subcommunity was distributed at the area with relative mesic conditions and high organic matters. Nitrogen was highest at P. sargentii community, phosphate at P. densiflora-S. incisa subcommunity, calcium, potasium and magnesium of exchangeble cation at R. pseudo-acacia afforestation. Especially, the level of calcium in R. pseudo-acacia afforestation, P. koraiensis afforestation and P. densiflora community was shown the highest (0.38-1.48 mg/100g) compared to other communities, because of the influence of lime fertilization used to improve acidic soil.

• Asian-Australasian Journal of Animal Sciences
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• 제9권2호
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• pp.231-235
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• 1996

Bangladeshi indigenous chickens of mixed ages vaccinated twice at a three week interval with either conventional vaccines-$F_1$ (ocular) and M (mukteswar, Intramuscular), or heat resistant $V_4$ vaccine administered by either the ocular or oral routes, all showed satisfactory hemagglutination inhibition antibody (HI) responses and protection against Newcastle Disease (NCD) challenge persisting for four months. The antibody response to $F_1$ and M was higher than for $V_4$, which was similar whether administered by the ocular or oral routes. All vaccinated treatments have a significant level of protection compare to the control group (p<0.01). No significant difference (p>0.05) in the protection against controlled challenge with virulent NCD virus was found between vaccinated groups.