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李喆浩,崔周鎬,朴重春,孫嶺杰,朴鳳植,李炯貞 진주산업대학교 농업기술연구소 1999 農業技術硏究所報 Vol.12 No.-
배추 plug육묘 조건을 알아보기 위하여 상토 종류, 질소시비수준, plug트레이 배수공수준을 달리하여 실험한 결과를 요약하면 다음과 같다. 1. 유묘출현율은 A상토<B상토<C상토의 順으로 높았고, 질소시비수준은 무비구에서 높고, 시비구에서는 90∼90ppm수준에서 높은 편이었으며 배수공수에 따라서는 배수공이 적은 128공구가 출현율이 높았다. 2. 幼苗의 葉발생도 A상토<B상토<C상토 순으로 높았고, 질소시비수준은 다비구(150ppm구)에서 엽수 5배로 최대엽수를 나타내었고, 배수공수에 따라서는 배수공이 적은 128공구가 높았다. 3. 엽장의 길이는 A상토구는 128공구에서 질소시비수준 120ppm에서 6.98cm로 가장 길었으며, B상토구에서 128배수공구의 시비수준 150ppm에서 12.41cm로 가장 길었고, C상토구에서도 128배수공구의 시비수준 150ppm에서 12.88cm, 200배수공구에서도 9.29cm로 가장 길었고 무비구에서는 공히 가장 짧았다. 4. 葉幅도 엽수와 엽장과 비슷한 경향으로 기비로 사용된 질소의 시비수준이 증가할수록 엽장이나 엽폭이 증가하여 B상토구의 150ppm 시비구에서 4.80cm로 최대치를 나타냈으며 시비량이 감소할수록 엽폭도 줄어드는 경향이였다. 5. 뿌리의 신장은 A상토구의 128배수공구에서 질소질 함량이 90∼120ppm수준의 범위내에서 신장이 양호하였으나 150ppm시비구에서는 불량한 반면, B와 C상토구에서는 90∼150ppm 모두에서 양호하였다. 6. 생체중과 건물중도 상토조성, 질소질비료 및 트레이 크기에 따라 모두 크게 영향을 받는 것으로 나타났으며 C상토구의 150ppm시비구에서 주당 3.0g의 생체중에서 최대치를 보였고 건물중 역시 C상토구의 150ppm시비구에서 4주에 600mg의 생체중의 증가를 보여 최대의 기록을 나타냈고 질소질의 농도 150ppm이 생체중 및 건물중 증가에 가장 효과적인 것으로 나타났다. The experiments were conducted to develop ideal substrates for the production of good quality in cabbage plug and also to improve the media with low or non environmental pollution by blending and mixing artificial substrate including peat moss, coir, perlite, vermiculite, carbonized rice hull and zeolite. In effects of soil substrate combination, nitrogen concentration and tray cell size on growing of 'Baekro', chinese cabbage, the ratio of seedling emergency in all fertilizer block was higher than non-fertilizer of nitrogen by 80%. The number of leaves were most increased in the 150ppm nitrogen solution of B block(coir 50%, vermiculite 10% and perlite+carbonized rice hull-zeolite 40%) and C block(coir 40%, vermiculite 20% and perlite+carbonized rice hull+zeolite 40%). The leaf length and leaf width were similar with that result in the number of leaves. Rooting condition was the best in the 90∼120ppm nitrogen solution of A block(TOSILI No1, SHINAN-JEONGMIL(Co)) in 128 tray cell size. The fresh weight and dry weight were increased as the order A<B<C in soil combination, were increased in the fertilizer which has more nitrogen concentration and were increased higher in 128 than 200 tray cell size, and chlorophyll concentration was the highest in the 150ppm nitrogen solution of A and B soil combination.
Different Regulation of Atrial ANP Release through Neuropeptide Y₂ and Y₄ Receptors
Feng Lian Piao,Kuichang Yuan,Guang Yi Bai,한정희,박우현,김선희 대한의학회 2008 Journal of Korean medical science Vol.23 No.6
Neuropeptide Y (NPY) receptors are present in cardiac membranes. However, its physiological roles in the heart are not clear. The aim of this study was to define the direct effects of pancreatic polypeptide (PP) on atrial dynamics and atrial natriuretic peptide (ANP) release in perfused beating atria. Pancreatic polypeptides, a NPY Y₄ receptor agonist, decreased atrial contractility but was not dose-dependent. The ANP release was stimulated by PP in a dose-dependent manner. GR 23118, a NPY Y₄ receptor agonist, also increased the ANP release and the potency was greater than PP. In contrast, peptide YY (3-36) (PYY), an NPY Y2 receptor agonist, suppressed the release of ANP with positive inotropy. NPY, an agonist for Y1, 2, 5 receptor, did not cause any significant changes. The pretreatment of NPY (18-36), an antagonist for NPY Y₃ receptor, markedly attenuated the stimulation of ANP release by PP but did not affect the suppression of ANP release by PYY. BIIE0246, an antagonist for NPY Y₂ receptor, attenuated the suppression of ANP release by PYY. The responsiveness of atrial contractility to PP or PYY was not affected by either of the antagonists. These results suggest that NPY Y₄ and Y₂ receptor differently regulate the release of atrial ANP.
Piao, Feng Lian,Yuan, Kuichang,Bai, Guang Yi,Han, Jeong Hee,Park, Woo Hyun,Kim, Suhn Hee The Korean Academy of Medical Sciences 2008 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.23 No.6
<P>Neuropeptide Y (NPY) receptors are present in cardiac membranes. However, its physiological roles in the heart are not clear. The aim of this study was to define the direct effects of pancreatic polypeptide (PP) on atrial dynamics and atrial natriuretic peptide (ANP) release in perfused beating atria. Pancreatic polypeptides, a NPY Y<SUB>4</SUB> receptor agonist, decreased atrial contractility but was not dose-dependent. The ANP release was stimulated by PP in a dose-dependent manner. GR 23118, a NPY Y<SUB>4</SUB> receptor agonist, also increased the ANP release and the potency was greater than PP. In contrast, peptide YY (3-36) (PYY), an NPY Y<SUB>2</SUB> receptor agonist, suppressed the release of ANP with positive inotropy. NPY, an agonist for Y<SUB>1, 2, 5</SUB> receptor, did not cause any significant changes. The pretreatment of NPY (18-36), an antagonist for NPY Y<SUB>3</SUB> receptor, markedly attenuated the stimulation of ANP release by PP but did not affect the suppression of ANP release by PYY. BIIE0246, an antagonist for NPY Y<SUB>2</SUB> receptor, attenuated the suppression of ANP release by PYY. The responsiveness of atrial contractility to PP or PYY was not affected by either of the antagonists. These results suggest that NPY Y<SUB>4</SUB> and Y<SUB>2</SUB> receptor differently regulate the release of atrial ANP.</P>
Tie Feng Piao,Ji Hong Kim,Sang Hoon Chung 강원대학교 산림과학연구소 2008 Journal of Forest Science Vol.24 No.2
Based on the former researches, this article studied the influence of cone harvesting of Korean pine on the regeneration of Korean pine trees and the life of animals in Mt. Changbai Nature Reserve. When the cone matures, scales of the cone do not open so the seeds can not be released automatically. And the seeds, if left inside, are hard to germinate and can not grow further into seedlings. The seeds of Korean pine have deep dormancy characteristics. Natural regeneration of Korean pine is very poor under mother trees. Hoarding behavior of dispersing animals not only helps animals for food shortage period but also contributes to the dispersion of seeds of Korean pine. Among those hoarding animals, squirrel and Eurasian nutcrackers are found to be the most important dispersing agents for the seeds of Korean pine. After cone harvesting, the number of those dispersers reduced a lot since the seeds of Korean pine are very important food for them. Seed quantity of Korean pine on surface layer became very few and most of them only showed single distribution. Most of the seeds were buried under litter layer and showed a single or 2-4 seeds/cluster distribution. The case of more than 4 seeds in one cluster was few. The seed quantity of Korean pine forest on steep slopes of the research area was only 0.3% of the seed quantity in 1980 for the same forest type. If seed source of Korean pine are not protected, Korean pine forest in Mt. Changbai Nature Reserve would not maintain present feature in the future.
YCbCr칼라 모델에서 화재의 움직임 정보를 이용한 화재검출 알고리즘
박봉희(Feng-Ji Piao),류지구(Ji-Goo Ryu),문광석(Kwang-Seok Moon),김종남(Jong-Nam Kim) 한국멀티미디어학회 2010 한국멀티미디어학회 학술발표논문집 Vol.2010 No.2
본 논문에서는 화재검출을 위하여 카메라 입력영상으로부터 화재의 특징을 이용하여 화재영역을 검출하는 알고리즘을 제안하였다. 제안하는 화재검출 방법은 영상에서 움직임 객체를 찾는 것으로 1차적인 화재영역을 검출하고 다음 영상이 RGB칼라모델이 아닌 YCbCr칼라 공간에서 각 성분의 칼라정보를 이용하여 2차적인 화재영역을 검출하였으며 마지막으로 화재의 외부 경계추출, 노이즈 제거 등의 영역해석을 수행함으로써 화재영역를 검출한다. 실험결과 이전의 비전기반 화재 감지 기법에 비해서 좋은 결과를 나타내는 것을 볼수 있다.