http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
방목 및 사사 사육이 엘크 사슴의 사료섭취량, 증체량 및 녹용 생산성에 미치는 영향
이진욱,이성수,연성흠,조창연,김상우,김관우,Lee, Jinwook,Lee, Sung Soo,Yeon, Sung Heum,Cho, Chang Yeon,Kim, Sang Woo,Kim, Kwan Woo 한국초지조사료학회 2017 한국초지조사료학회지 Vol.37 No.4
본 연구는 엘크 사슴의 사육방식에 따른 사료섭취량, 체중 변화 및 녹용생산성에 미치는 영향을 확인하기 위하여 실시하였다. 엘크 사슴 12두를 공시하여 사사사육과 방목사육 형태로 사육하였으며, 처리구 간에 섭취량은 유사하게 나타났다. 일당증체량과 녹용생산성의 경우 방목사육 형태가 높게 나타났는데, 일당증체량은 방목사육 시 약 39% 높은 경향을 보였는데 이는 발육 개선효과가 있을 것으로 생각된다. 녹용 생산성 역시 방목사육 시에 약 19% 높은 경향을 보였다. 그러나 녹용 생산성의 경우 개체 간 편차가 심하여 통계적 유의성은 인정되지 않았다. 본 시험에서 방목사육 시에 일당증체량과 녹용 생산성이 높게 나타난 것은 방목에 따른 조사료원의 영양적 성분이 높기 때문으로 생각된다. 이러한 결과는 사슴 방목의 효과에 대한 기초자료로서 충분이 활용될 수 있을 것이며, 앞으로 계절과 방목지의 초종에 따른 녹용의 생산성과 안정성에 대한 추가적인 연구가 수행되어야 할 것으로 생각된다. This study was conducted to investigate the effect of pasture grazing and barn feeding system on the growth performance, weight gain and velvet antler productivity in Elk. Twelve 5-year-old elk stags about 273 kg were stratified by weight and randomly assigned by feeding system (a pasture grazing and a barn feeding, n=6). The average feed intake were not signigicant difference between two groups. Average daily gain for grazing and barn feeding group was 0.25 g and 0.29 g respectively, showing no significant difference. Velvet antler yield for grazing and barn feeding group was 7,700 g and 6, 960 g respectively, with no significant difference. In conclusion grazing group was better than barn feeding group in feed intake, body weight gain and velvet antler productivity. However, there were no statistical significant difference between the two group. These results may serve as the basis for further study of deer feeding system in Korea and further study needed to examine the grazing intensity and economic efficiency.
커먼레일 직접분사(CRDi)용 고압 디젤인젝터의 구동방식별 Pilot Spray 특성비교(II) - 솔레노이드 및 피에조 구동방식 비교분석 -
이진욱,Lee, Jin-Wook 한국액체미립화학회 2010 한국액체미립화학회지 Vol.15 No.2
The capability of pilot injection with small fuel quantity at all engine operating conditions is one of the main feature of the common rail direct injection system. The purpose of the pilot injection is to lower the engine noise and to reduce the NOx emissions. This study describes the pilot spray structure characteristics of the common-rail diesel injectors with different electric driving characteristics, including solenoid-driven and piezo-driven type. Namely three common-rail injectors with different electric current wave were investigated in this study. The pilot spray characteristics such as spray speed, spray tip penetration, and spray angle were obtained by spray images, which is measured by the back diffusion light illumination method with optical system for high-speed temporal photography. As this research results, it was found that pilot injection of common-rail system was effected by rate of injection with different electrical characteristic for injector driving.
A cascade energy funneling structure for efficient perovskite light emitting diodes
이진욱 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
Metal halide perovskite materials have shown remarkable potential to be a next-generation light source owing to its superior optoelectronic properties. To fabricate efficient light emitting diode (LED) devices, effective management of charge carrier dynamics in perovskite layer is essential. Incorporation of energy funneling structure have been reported to be an effective approach to enhance a luminescence property of the perovskite LED devices. In this presentation, I will report a novel approach to fabricate cascade energy funneling structure to promote radiative recombination of charge carriers in the perovskite films and LED devices. Photo-physical studies unraveled that the energy funneling structure is indeed effective for preventing non-radiative recombination loss while enhancing the radiative recombination of the charge carriers. Based on the energy funneling structure, efficient green and near-IR perovskite LED devices will be demonstrated.