http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
권오근,신학기,최성열,정향영,이정수 한국화훼산업육성협회 2011 화훼연구 Vol.19 No.4
노랑색 절화용 스프레이 카네이션 품종 ‘Leo’는 ‘Ballantyne’과 ‘West peachy’ 품종을 인공 교배하여 국립원예특작과학원에서 육성되었다. ‘Leo’는 1999년에 교배하여 2001-2003년까지 품종 특성을 조사하였고, 2003년에 최종 선발하였다. ‘Leo’는 절화용의 연노랑 스프레이 품종으로 꽃수는 대조 품종보다 다소 적으나 개화가 빠르고 분지수가 많은 특징을 보였다. 또한 절 화수명은 9일이고 시들음병에는 ‘중’ 정도의 저항성이 있다. A new spray carnation cultivar ‘Leo’ was released by the National Institute of Horticultural and Herbal Science in 2003. A cross was made between spray cultivar ‘Ballantyne’ and ‘West peachy’ in 1999. After investigation of the characteristics four years (from 2001 to 2003), it was finally selected in 2003. ‘Leo’ is a spray cultivar with light yellow color for a cut flower. The main characteristics are multi branching, long vase life and early flowering habit than ‘Diamond’(control). It has medium resistance to Fusarium wilt and 9 days vase life.
권오근,Manjulatha Mekapogu,김기선 한국원예학회 2019 Horticulture, Environment, and Biotechnology Vol.60 No.6
The effect of salinity stress on growth and photosynthesis has been studied in various plants. However, reports on the impacts of salt stress on the growth and physiological factors in carnation are limited. In this study, we measured how photosynthesis and related parameters were affected by salinity stress at the flowering stage of carnation. Salinity reduced the photosynthetic rate and related parameters, including stomatal conductance, intercellular CO2 concentration, and transpiration. Chlorophyll content slightly increased at lower NaCl concentrations, and showed a decreasing tendency at higher NaCl concentrations. ABA content increased with increasing NaCl concentrations. The duration and extent of sap flow significantly decreased at higher NaCl concentrations compared to the untreated control on both sunny and cloudy days. At 200 mM NaCl, stressed leaves appeared to have smaller cell size and larger intercellular spaces. Stomata subsided at lower and upper epiderma, while stomatal size and density decreased at higher NaCl. Epicuticular wax layer was particularly thicker at 200 mM NaCl and some stomata were completely covered with the epicuticular wax. Hence, the results reported here facilitate a better understanding of the potential salt tolerant mechanism adopted by carnation to reduce transpirational water loss from the plant under salt stress. Overall, the reduced photosynthetic capacity under salinity stress could be attributed to a decreased stomatal conductance.
풀러렌 셔틀 소자로 그래핀 나노리본 트렌치 응용에 관한 분자동력학 시뮬레이션 연구
권오근,강정원 사단법인 인문사회과학기술융합학회 2018 예술인문사회융합멀티미디어논문지 Vol.8 No.1
We investigated the position controlling C60 fullerene encapsulated into a graphene-nanoribbon trench via classical molecular dynamics simulations. The graphene-nanoribbon trench can provide nanoscale empty spaces, and a C60 encapsulated therein can be considered as media for a nanoelectromechanical shuttle device. The classical molecular dynamics simulations presented here provide information on the potential application of a graphene-nanoribbon trench in a C60 shuttle device. Driving forces applied to C60 resulted in its motion toward the edges of the graphene-nanoribbon trench, the suction forces induced at both edges were balanced with the driving forces, and finally, the C60 fullerene gradually settled on the edges of the graphene-nanoribbon trench after several oscillations. The results of the present simulation suggest the importance of graphene-nanoribbon trenches encapsulating fullerenes in a wide range of applications in the field of nanotechnology. 최근 그래핀을 이용한 나노전자소자에 대한 많은 연구들이 다양한 분야에서 활발하게 이루어지고 있다. 본 연구에서는 분자동력학 시뮬레이션 방법을 사용하여 그래핀 나노리본 트렌치 구조를 이용한 풀러렌 분자 셔틀 소자로의 활용 가능성에 대하여 연구하였다. 그래핀 나노리본 트렌치 구조는 그 나노미터 규모의 분자 저장이 가능한 공간을 만들 수 있어, 이 공간을 활용하여 나노전기전자소자를 제작할 수 있는 가능성을 열어준다. 그래핀 나노리본 트렌치로 흡수된 풀러렌 분자는 외부 작용력의 방향에 따라서 그 위치를 그래핀 나노리본 트렌치 내부에서 조정할 수 있게 되기 때문에, 이를 이용하여 그래핀 나노리본 트랜체 내부에서 플러렌의 위치 조정으로 디지털 정보를 저장할 수 있다. 풀러렌 분자가 그래핀 나노리본 트렌치 내부에서 고랑을 따라서 이동과정에서 다양한 운동에너지 역학이 작용되는 것을 살펴보았다. 본 연구에서는 그래핀 나노리본 트렌치에 흡수된 풀러렌 분자는 나노전지전자소자의 오실레이터, 정보저장소자, 센서 등 다양한 첨단 분야에서 활용가능하다는 것을 연구하였다.
권오근,김광진,정향영,최성열,이정수 한국육종학회 2010 한국육종학회지 Vol.42 No.6
분홍색 스프레이 카네이션 품종 ‘Lyra’는 노랑색 스프레이 품종 ‘Ballantyne’와 적색 스프레이 품종 ‘Chateau’을 인공 교배하여 국립원예특작과학원에서 육성되었다. ‘Lyra’는 1999년에 교배하여 2001-2003년까지 품종 특성을 조사하였고, 2003년에 최종 선발하였다. ‘Lyra’는 밝은 분홍색 절화 스프레이 품종으로 다 분지성이고 절화장이 길며 향기가 있는 조기 개화성 품종이다. 절화 수명은 7일이고 시들음병에는 중간정도의 저항 A new spray carnation cultivar 'Lyra' was released by the National Institute of Horticultural and Herbal Science in 2003. A cross was made between spray cultivar 'Ballantyne' and red spray cultivar 'Chateau' in 1999. After investigation of the characteristics during four years (from 2000 to 2003), the cultivar 'Lyra' was finally selected in 2003. 'Lyra' is a spray cultivar with bright pink color for a cut flower. The main characteristics are early flowering, multi branching, fragrance and long flower stalk. Also, it has medium resistance to Fusarium wilt and 7 days vase life. To avoid calyx splitting caused by high temperature, it is recommended that this cultivar be grown over 8℃ at night and under 25℃ at day time during a flower bud differentiation period and applied with additional nitrate fertilization (30.0 kg 10-1).
Energy exchange between vibration modes of a graphene nanoflake oscillator: Molecular dynamics study
권오근,김학원,강정원 한국물리학회 2014 Current Applied Physics Vol.14 No.3
We investigated the oscillatory behaviors of a square graphene-nanoflake (GNF) on a rectangular GNF via classical molecular dynamics simulations, and analyzed the energy exchange and the oscillation frequencies for three different modes. The simulation results using a model structure show that the GNF oscillator can be considered as a high frequency oscillator. As its initial velocity increases, its telescoping region increases, then its structural asymmetry along the axis due to own small rotation exerted asymmetric van der Waals (vdW) force on it, and finally, this asymmetric vdW force enhances its rotational motions during its axial translational motions. So the initial kinetic energy of the axial translational motion is changed into the energy of the orthogonal vibrational and the rotational motions. Its resonance frequencies are dependent on the aspect ratio of the bottom rectangular GNF, the difference between the lengths of the GNF oscillator and the bottom rectangular GNF, and the initial velocity.