• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2008년도 춘계학술대회
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• pp.222-228
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• 2008

The chemical composition and thermal, crystal characterization of oak mushroom waste were investigated in comparison with those normal oak wood for utilization of cellulose from oak mushroom waste. The oak mushroom waste contained a higher percentage of ash, and hot water extractives than oak wood. This results indicated that the materials inside the body are easily decomposed during the oak mushroom cultivation. The lower percentage of holocellulose and a-cellulose of oak mushroom waste caused by fungal decomposition too. Whereas, the thermal decomposition behavior and crystallinity of oak mushroom waste was similar to that of normal oak wood, which indicated that the cellulose characterization of oak mushroom waste is resistant to fungal decomposition. In additionally, a degree of polymerization of oak mushroom waste must be investigate for examination of cellulose crystalline characterization, especially.

• 한국도서관정보학회지
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• 제48권1호
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• pp.137-160
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• 2017

OAK(Open Access Korea)는 오픈 액세스 지식정보의 공동 활용 및 통합서비스 체제 구축을 위해 국가적 차원에서 추진하고 있는 기관 리포지터리 사업이다. 그러나 메타데이터의 구축과 공유에 있어 다양한 문제를 내재하고 있어 OAK 메타데이터 요소에 대한 개선이 시급한 상황이다. 이에 본 연구에서는 OAK 참여기관에서 사용하는 메타데이터 요소를 세밀하게 분석하고, OAK와 유사한 성격의 국내외 리포지터리 사례를 참조해 가면서, OAK 메타데이터 수정(안)을 제안하였다. 구체적으로, OAK 참여기관의 메타데이터 현황을 조사하기 위해 17개 기관의 사례를 입수하여 분석하였으며, 참여기관에서 사용하는 메타데이터 요소의 용도가 명확하지 않은 경우 기관 리포지터리 담당자와의 인터뷰를 통해 보완하였다. 더불어, DSpace, EPrints, BEPress, ETD-db, dCollection 리포지터리의 메타데이터 사례를 분석한 다음, OAK 참여기관 실무자들과의 대면 회의 및 이메일 교환을 통해 최종적인 OAK 수정(안)을 도출하였다.

• 한국초지조사료학회지
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• 제14권1호
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• pp.27-33
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• 1994

This study was conducted to determine the nutritional value of native oriental white oak(Quercus aliena Blume) browse by Korean native goats. Oak browse were mixed with grass hay(orchardgrass 60% and red clover 40%), varing in oak browse content. Diets included 30% oak browse and 70% grass hay, 60% oak browse and 40 % grass hay, and a 100% grass hay(contro1). Oak browse diets were higher in NDF, ADF, lignin, and tannin contents, but lower in CP content than the control diet with increased oak browse levels. Gross energy levels showed no difference between the control and oak browse diets. Dry matter intake was the lowest on diet containing oak browse 60%. Digestibility for DM, cellular constituents, NDF, and ADF showed lower for oak browse diets compared to control diet(P<0.05). Oak browse diets furnished significantly lower dietary N than &d the control diet. Fecal N losses generally increased with higher levels of oak browse levels(P<0.05). Apparently digested N and retained N were lower in oak browse diets than in control diet. The higher retained N was obtained in control diet than in oak browse diets. DE and ME declined linearly as oak browse levels increased when compared to control diet(P

• 한국초전도학회:학술대회논문집
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• 한국초전도학회 2002년도 High Temperature Superconductivity Vol.XII
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• pp.4-4
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• 2002

• 한국식생활문화학회지
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• 제27권2호
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• pp.202-210
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• 2012

The purpose of this study was to bake sweet rice muffins with oak mushroom ($Lentinus$ $edodes$) powder. The process included substituting sweet rice flour for cake flour and adding oak mushroom powder. This study determined the optimal mixing conditions of oak mushroom muffins by adjusting the amounts of oak mushroom powder, whole eggs, and soybean oil. The mixing conditions for the oak mushroom muffins included 3 categories: oak mushroom powder (X1), whole eggs (X2), and soybean oil (X3) by Central Composite Design (CCD) which was optimized by Response Surface Methodology (RSM). Oak mushroom muffin formulation was optimized using rheology. Yellowness (p<0.001) and redness (p<0.05) displayed a linear model pattern, whereas lightness (p<0.05) was represented by a quadratic model. Among the sensory properties, variables that appeared to show significant values such as appearance (p<0.5), texture (p<0.5), and overall quality (p<0.5) were used to identify optimums. The result of mechanical properties showed significant values in gumminess (p<0.5) and chewiness (p<0.5). The numerical and graphical methods used in this study determined that the optimum formulation for oak mushroom powder sweet rice muffins was 8.75 g of oak mushroom powder, 235.95 g of whole eggs, and 19.93 g of soybean oil.

• The Korean Journal of Ecology
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• 제24권6호
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• pp.377-380
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• 2001

Herbivory is an important selective forces on plants by reducing the ability of the plant to compete with its neighbors and to produce offspring. Oak nut weevil(Mechoris ursulus Roelofs) females lay eggs in unmatured acorns and cut off the branch of oviposited acorns. To investigate the influences of branch-cutting behavior of oak nut weevils on oak production, we surveyed the horizontal and vertical distribution ranges of damaged oaks and depth of sites of overwintering larvae and quantified the amounts of biomass and acorn removed by the weevils on deciduous oak species. All of the endemic oak species in Korea were damaged by oak nut weevils in all of the study sites including Mt. Halla and Mt. Seorak. The upper limit of vertical distribution of damaged oaks by the weevils raried from 700 m to 900 m. Mostly their larvae were found in soil from 8.1 cm to 10.0 cm depth in winter. Percentage of annual net primary productivity($720g{\cdot}m^{-2}{\cdot}day^{-1}$) of oak species removed by the weevils was about 7%, which is higher than the percentage removed by all the herbivores in typical temperate forest(5%) and equivalent to that by all the herbivores in tropical forest. The predation percentage of annual acorn production by oak nut weevil was 27% in Q. mongolica and 33% in Q. acutissima. This results indicate that the branch-cutting behavior of oak nut weevil may be the most important factor regulating oak population and affecting other predators dependent on acorns.

• 임산에너지
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• 제21권2호
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• pp.43-50
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• 2002

위스키 숙성용 목통으로서 한국산 참나무속 목재의 이용 가능성을 검토하기 위하여 도관직경, 방사조직 밀도, 방사조직 높이, 타일로시스의 존재 유ㆍ무 등 해부학적 특성과 알콜 침지 중의 밀도, 색농도 변화 및 흡수량을 조사하였다. 본 실험에 사용된 참나무속 목재는 모두 환공재였고, 단열방사조직과 광방사조직으로 구성된 복합방사조직을 가지고 있었으며, 방사유세포는 대부분이 평복세포였다. 타일로시스는 루부라참나무를 제외한 공시재 모두에서 존재하였다. 목재 밀도는 알콜 침적 후 많이 감소하였다. 알콜 색 농도는 떡갈나무와갈참나무가 다른 수종보다 더 짙은 황갈색을 나타냈다. 홉수량은 변재가 심재보다 높았고, 특히 red oak가 white oak보다 더 크게 나타났다. 결론적으로 국산 참나무속 수종은 위스키숙성용 목통으로 사용될 수 있을 것으로 판단되었다.

• 한국도서관정보학회지
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• 제51권3호
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• pp.27-51
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• 2020

본 연구는 국립중앙도서관의 오픈액세스 리포지토리인 OAK에서 연구데이터를 기술할 수 있도록 OAK 메타데이터에 확장 방안을 제안하는데 목적이 있다. 이를 위한 연구방법으로 문헌연구, 사례조사, 관계자와의 면담을 실시하였다. 연구데이터 기술을 위한 기존 OAK 메타데이터의 확장 방안을 다음과 같이 도출하였다. 첫째, 연구데이터를 위한 모델링으로 컬렉션 > 아이템 > 파일로 구성된 기존 구조를 그대로 유지하되 컬렉션은 해당 연구데이터를 묶을 수 있는 상위 그룹으로 두고, 아이템에는 연구데이터의 메타데이터와 파일을 묶어 제공하는 구조를 제안하였다. 둘째, 표준, 사례 기관의 메타데이터를 기존 OAK 메타데이터와 매핑하여 연구데이터의 기술을 위해 OAK에 추가할 필요가 있다고 판단되는 요소를 선별하여 OAK 확장 요소를 도출하였다. 셋째, 구조화된 데이터를 통해 검색이나 추후 통계 등에 활용할 수 있도록 통제어휘집과 구문에 대한 사항도 제시하였다. 본 연구는 연구데이터의 기술을 위해 OAK 메타데이터를 확장함으로써 국내에서 산출되는 연구데이터가 공식적으로 수집·저장·활용될 수 있는 기반을 제공함으로써 국가적으로 연구의 중복을 방지하고 연구 산출물을 공유 및 재활용할 수 있는 정보환경을 구축하는데 기여하였다.

• The Korean Journal of Ecology
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• 제19권2호
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• pp.125-139
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• 1996

The relationships between environmental factors and the establishment and growth of oak seelings were studied in the greenhouse. The early seedling performances of three oak species (Quercus mongolica, Quercus serrata, Quercus variabilis) were compared. Mean seed weight was the biggest in Q. variabilis, and the smallest in Q. serrata, and the germination rate was higher in Q. variabilis than in Q. mongolica and Q. serrata. The germination rate was significantly affected by seed weight class in Q. serrata, but not in Q. mongolica. Emergence of oak seedlings was similar in all three oak species, and especially the first leaf emergence increased about twenty days after germination. An experiment was designed using three environmental factors (light, soil moisture, fertilizer) to compare the response of the three oak species. Light and soil moisture significantly affected the seedling height growth of Q. variabilis, but the effect was marginal in Q. mongolica and Q. serrata. However, growth of seedling biomass was significant in all three oak species. In contrast, fertilizer did not affect seedling growth of any of the oak species. Q. variabilis is expected to grow well in large gaps because it is very sensitive and responds well to high light and high moisture conditions. Q. mongolica and Q. serrata are relatively tolerant to shade but may need gaps for the seelings to grow into saplings.

• 농업과학연구
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• 제48권3호
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• pp.483-492
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• 2021

This study attempted to estimate the degree of management of oak mushroom farms in Chungcheongnam-do and to provide information to establish oak mushroom cultivation-related policies. The oak mushroom management standard diagnostic table consists of three major categories, growing condition, inoculation management, cultivation management and management administration, along with 20 subcategories. Thus, 209 households of oak mushroom farms were surveyed from 2015 to 2018 in Gongju, Cheongyang, Buyeo and Seochun in Chungcheongnam-do. The average score for the 20 subcategories was 71.5 points (representing a significant level), indicating that these areas have excellent management conditions. The analysis of the management performance indicators revealed a high number of indicators with scores of five or above. The total score was higher, and the amount per bed log and the rate of top-grade products in the total output were also higher, indicating a significant correlation. These findings will provide consulting services to oak mushroom growers as they highlight the correlation between the higher scores of indicators in the oak mushroom management standard diagnostic table and the management performance of farmers. We found that the scores of the indicators for management administration, such as management record and analysis and fund plan were relatively lower than those of other indicators. It is assumed that the owners aging has led to negligence in recording the details on incomes, expenditures, and work and lowered the willingness to make substantial profits. Therefore, it is essential to overcome these problems for profitable oak mushroom farming.