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      • KCI등재

        지리정보 및 위성정보를 활용한 자연환경해석 - 일본 이바라키(茨城)현의 사례

        최병양,이양재 대한국토·도시계획학회 2002 國土計劃 Vol.37 No.1

        Japan has much concern to familiar nature(Satoyama) recently. The target area of this research is Ibaraki Prefecture of Japan. This research is to grasp natural resources by change of natural environment. It is purpose to examine vegetation which requires protection using the result. The natural environment analysis are used with satellite remote sensing data and geography information data. The analysis result could confirm that NDVI and grade of vegetation naturalless were falling. Moreover, decline of Kunugi-konara gunsyu(Quercdtum acutissimo-sorratae) which needs protection could be grasped. It was a case due to urbanization of taget area. After this, we will have to examine it toward the conservation of the familiar nature.

      • KCI등재
      • KCI등재

        지리정보시스템을 활용한 야생동물의 서식환경분석 및 보호를 위한 적지분석

        최병양 대한국토·도시계획학회 2002 國土計劃 Vol.37 No.2

        The study area focuses on the analysis of the forest, the geology, the present condition of the natural environment and its geography, using the vegetation in the super forest road vicinity area of the Hakusan National Park to grasp the diversity of the natural resources spatially. The purpose of the study is to grasp the inhabiting environment of the animals, and to select preferred sites for reserve of wild animals.According to the overlay analysis, though the danger of the landslide was high, many Phragmitetum Japonicae herbs are growing in the area.The reason is related to geology. Vegetation occupying most of study area are Saseto-kurilensae-Fagion, Crenatae and Sasa spp.-Betula ermanii community, and the potential of animals inhabiting the area is high in the Fagus crenata forest.There was more than a slope of 30-40 degree, of Rhvolitic Welden Pyroclastic rocks in the northwest direction. In the analysis of the wild animal reserve, Saseto-kurilensae-Fagion crenatae vegetation needed protection. The surroundings of the mountain top and the valley area were analyzed as an inhabiting possibility area of the wild animals. The environmental conditions of the area and the Fagus crenata primeval forest were realized as steep geographical feature. The distribution of the vegetation suggested the possibility that the fauna distribution zone could be linked with biological diversity.As a conclusion it was certain from the vegetation distribution zone, that the wild animal inhabiting potential zone shows the importance of natural vegetation and wild animal protection zone spatially.

      • 친환경 한우 생산을 위한 메탄 저감용 사료 배합 및 적정 사육밀도에 관한 연구

        신종서,최병양,김미정,김승기,라창식,Shin, Jong-Suh,Choi, Byoung-Yang,Kim, Mi-Jung,Kim, Sung-Gi,Ra, Changsix 한국축산환경학회 2011 축산시설환경학회지 Vol.17 No.suppl.

        본 연구는 친환경 한우생산을 위해 다양한 원료사료의 선택 및 구성비율 변경을 통해 메탄 저감용 사료배합비의 작성 및 적정 사육밀도에 관한 연구를 규명하기 위하여 실시하였다. 본 연구의 메탄 저감용 사료배합에 활용한 원료사료는 파쇄 옥수수와 알팔파 외 21종이었다. 또한 적정 사육밀도를 조사하기 위한 공시동물은 평균 체중 150 kg의 한우 송아지 12두를 선정하여 4개월간 실험을 수행하였다. TMR 1, 2, 3에 비해 TMR 4에서 약 3~4배정도 낮은 메탄가스 발생량을 보였으며, 사료가격에서도 저렴한 결과를 보였다. TMR 4는 TMR 1, 2 및 3에 비해 건물 소실율에서 낮은 경향을 보였으며, 메탄생성량은 24~37%정도 감소하는 결과를 보였다. 한편, 한우 육성우의 적정 사육밀도 실험에서 저밀도 ($18m^2/head$) 및 일반 처리구 ($9m^2/head$)는 과밀도 처리구 ($6m^2/head$)에 비해 총 증체량, 일당증체량 및 사료요구율이 개선되는 결과를 보였다. 또한 건강과 질병에 관련된 혈액성분에서 저밀도 및 일반 처리구는 영양대사 및 건강에 관련된 total protein, glucose, AST, ALT 및 GGT 농도가 과밀도 처리구에 비해 효과적으로 개선되는 결과를 보였다. 체위 발육(development of body size)의 경우 저밀도 및 일반 처리구의 체중, 흉폭, 요각폭 및 곤폭은 고밀도 처리구에 비해 현저하게 증가하였으며, 특히, 저밀도 처리구는 일반 처리구보다 체위발육이 우수한 결과를 보였다. 그리고 저밀도 및 일반 처리구는 고밀도 처리구에 비해 깔짚의 수분 함량, 대장균 및 콕시듐의 조절에서도 긍정적인 결과를 보였다. 이와같이 한우 육성우의 적정 사육밀도는 두당 $6m^2$ 이상이 바람직한 것으로 판단된다. 따라서 본 연구에서는 원료사료의 선택 및 구성비율 변경을 통해 메탄 생성량을 저감시킬 수 있는 가능성을 사료자원의 배합비 조정으로 메탄 저감용 사료생산의 가능성을 제시하였으며, 사육밀도는 한우의 성장과 발육에 중요한 요인임을 알 수 있었다. 따라서 본 연구에서는 적절한 원료사료의 선택 및 구성비율 변경을 통해 메탄 발생량 조절의 가능성을 제시하였으며, 사육밀도는 한우의 성장과 발육에 중요한 요인임을 확인할 수 있었다. This study was conducted to analyze the mixing ratio of raw feed materials for the methane mitigation and also to identify the minimum rearing density for improving the productivity of beef calves as eco-friendly fodder. Raw materials used in this study for the formulation of feed for methane reduction were crushed corn and alfalfa along with other 21 species. In addition, to investigate the appropriate rearing density, 12 Hanwoo calves with average weight of 150 kg was selected and experiment was conducted for four months. Methane gas emission (Bo) is about 3-4 times less in TMR 4 compared to TMR 1, 2 and 3. Feed price calculated for TMR 4 ration was also affordable. In addition, all TMRs showed a normal ruminal pH. Disappearance rate was observed to be lower in TMR 4 as compared to TMR 1, 2 and 3, but methane production decreased by 24 to 37%. The result showed improved total body weight, average daily gain and feed conversion ratio in rearing low-density ($18m^2/head$), and general treatment ($9m^2/head$) compared to overcrowding treatment ($6m^2/head$). In addition, blood components (total protein, glucose, AST, ALT and GGT factors) involved in health and disease treatments and health-related nutrition metabolism are lower in the low-density and general treatment compared to the high density treatment. Postural development (development of body size) i.e., weight, height and width significantly increased in the low and general density treatment compared to high density treatment. Especially excellent improvement was observed in low-density treatment than the general treatment. Moisture content, colonic bacteria and coccidium are higher in low and high density treatments than in the general treatment. The adequacy for beef rearing density is considered to be more desirable in an area more than $6m^2/head$. In conclusion, present study suggests that possibility of methane reduction through adjusting mixed feed ration. Also, rearing density is also an important factor in the growth and development of beef calves.

      • KCI등재
      • KCI등재

        Protective Effects of Silymarin against the Toxicity of Bisphenol A (BPA) on Boar Sperm Quality

        장현영,공홍식,최병양,신종서,정희태,김종택,박인철,박춘근,양부근 사단법인 한국동물생명공학회 2011 한국동물생명공학회지 Vol.26 No.4

        BPA, a diphenyl compound containing groups, that make it structurally similar to synthetic estrogen and is considered as one of the major endocrine disruptors. Silymarin has extensively been used to prevent and/or alleviate some human disease, especially for the treatment of adverse liver conditions. It has an antioxidative efficacy and cancer preventive efficacy. Therefore, we examined the hypothesis that silymarin can inhibit BPA-induced toxicity in boar sperm duing in vitro storage. Sperm characteristics (motility, viability, membrane integrity and mitochondrion activity) in semen exposed to BPA (10~200 uM) were sharply lowered, while it increase in a dose and time dependent manner due to silymarin addition (50~200 uM) into semen extender in the presence of BPA (100 uM). All of the evaluated characteristics were gradually improved in the groups that were treated with silymarin (50~200 uM) in the presence of BPA (100 uM)in comparison to BPA 100 uM alone group, irrespective of incubation periods (3 and 6 h). These results demonstrate that silymarin can ameliorate the toxicity of BPA on boar sperm characteristics during in vitro storage, suggesting that silymarin indirectly act as an antioxidant.

      • KCI등재
      • 국가 온실가스 인벤토리 축산부문 작성을 위한 온실가스 배출계수 개발 현황에 관한 연구

        이진의,이현주,박규현,최병양,라창식,Lee, Jin Eui,Lee, Hyun Ju,Park, Kyu Hyun,Choi, Byong Yang,Ra, Chang Six 한국축산환경학회 2011 축산시설환경학회지 Vol.17 No.suppl.

        In this study, researches on the development of country specific greenhouse gas measurement and sampling methods from the livestock sector were reviewed. Research on greenhouse gas emission factors was started in early 2000 but was not actively involved in the development of livestock sector based emission factor: since 2009, works are underway for the development of livestock sector based emission factor. Most of the research on greenhouse gas emission in the field of animal studies were done by National Institute of Animal Science, because of the uniqueness of the research laboratories. Methods of emission measurement are still not internationally certified and therefore, measurement and sampling methods for Korea livestock sector are being studied, consulting the worldwide research trends. Flux chamber method are commonly using in Korea for green house gas emission factors measurement. In recent years, continuous measurement of the microclimate was introduced to measure greenhouse gases from livestock manure storage facilities and the micrometeorology method should be adapted as recommended by Intergovernmental Penal on Climate Change (IPCC) Guideline.

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