http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
培地 및 培養液의 濃度가 부추의 初期生育에 미치는 影響
김창연 安東大學 1985 安東大學 論文集 Vol.7 No.1
부추의 양액 재배시 필요한 기초적인 문제를 구명하기 위하여 배지의 종류(Vermiculite와 Zeolite)와 배양액의 농도(0.5mu와 0.25mu)에 따른 부추의 생체중, 초장 및 건물율을 조사한 결과는 다음과 같다. 1. 생체중은 배지의 종류에 따른 차이는 인정할 수 없었고 배양액의 농도가 높은 쪽이 증가하는 경향을 보였다. 2. 초장은 처리간에 큰 차이를 인정할 수 없었다. 3. 건물율은 Zeolite에서 보다 높게 나타났으며 또 배양액의 농도가 높은 쪽에서 높았다. For the purpose of defining the fundamental necessary problems concerning the growth of chinese leeks, the fresh weight, the length of leaf and the dry matter ratio are examined according to the kinds of media material (Vermiculite and Zeolite) and nutrient concentration (0.5mu and 0. 25mu). The results of the study are as follows; 1. The fresh weight did scarecely change with the different kinds of media material but it increased more with the higher nutrient concentration. 2. For the length of leaf, there were not found any important differences between each of the different treatments. 3. The dry matter ratio appeared higher with Zeolite and also higher with higher nutrient concentration.
b1-integrin-dependent migration of microglia response to neuron-released a-synuclein
김창연,조은덕,김형구,유성룡,이혜진,황대희,이승재 생화학분자생물학회 2014 Experimental and molecular medicine Vol.46 No.-
Chronic neuroinflammation is an integral pathological feature of major neurodegenerative diseases. The recruitment of microglia to affected brain regions and the activation of these cells are the major events leading to disease-associated neuroinflammation.In a previous study, we showed that neuron-released a-synuclein can activate microglia through activating the Toll-like receptor 2 (TLR2) pathway, resulting in proinflammatory responses. However, it is not clear whether other signaling pathways are involved in the migration and activation of microglia in response to neuron-released a-synuclein. In the current study, wedemonstrated that TLR2 activation is not sufficient for all of the changes manifested by microglia in response to neuronreleased a-synuclein. Specifically, the migration of and morphological changes in microglia, triggered by neuron-released a-synuclein, did not require the activation of TLR2, whereas increased proliferation and production of cytokines were strictly under the control of TLR2. Construction of a hypothetical signaling network using computational tools and experimental validation with various peptide inhibitors showed that b1-integrin was necessary for both the morphological changes and the migration. However, neither proliferation nor cytokine production by microglia was dependent on the activation of b1-integrin. These results suggest that b1-integrin signaling is specifically responsible for the recruitment of microglia to the diseaseaffected brain regions, where neurons most likely release relatively high levels of a-synuclein.
광학현미경과 투과전자현미경을 이용한 토끼와 닭 대퇴골의 미세구조 분석
김창연,김은경,전태훈,남승원,김윤중,Kim, Chang-Yeon,Kim, Eun-Kyung,Jeon, Tae-Hoon,Nam, Seung-Won,Kim, Youn-Joong 한국현미경학회 2010 Applied microscopy Vol.40 No.3
뼈는 단계별 (hierarchical) 구조를 가진 복합 재료이며 독특한 구조와 기계적 특성 때문에 재료공학 분야에서 많이 연구되어져 왔다. 뼈는 주로 hydroxyapatite, 콜라겐과 물로 구성된 층판형 유 무기 재료 복합체이다. 주요 무기물로써 hydroxyapatite로 잘 알려진 calcium phosphate를 통하여 뼈는 특유의 강도를 유지하게 된다. 본 실험에서는 광학 현미경(LM)과 투과전자현미경(TEM)을 이용하여 토끼와 닭 대퇴골의 구조를 연구하였다. 구성물질 분석은 대퇴골의 calcium, potassium, oxygen 분포 변화를 알아보는데 이용하였다. 실험은 두 구조 범위에 중점을 두었다: micro scale에서 치밀골의 배열을, nano scale에서 콜라겐 섬유와 apatite 결정을 관찰하였다. Micro scale에서 닭과 토끼 대퇴골 구조의 뚜렷한 차이점이 발견되었다. Nano scale에서는 apatite 결정의 모양과 크기 그리고 콜라겐의 배열을 비교 분석하였다. 그 결과 토끼와 닭은 종이 다름에도 불구하고 nano scale에서는 화학성분과 구조가 매우 유사한 것으로 나타났다. Bone is a hierarchically structured composite material which has been well studied by the materials engineering community because of its unique structure and mechanical properties. Bone is a laminated organic-inorganic composite composed of primarily hydroxyapatite, collagen and water. The main mineral that gives bone's hardness is calcium phosphate, which is also known as hydroxyapatite. Light microscopy (LM) and transmission electron microscopy (TEM) were used to study the structure of femurs from chicken and rabbit. The elemental analysis was used to search variation in the distribution of calcium, potassium and oxygen in the femur. Current investigation focused on two structural scales: micro scale (arrangement of compact bone) and nano scale (collagen fibril and apatite crystals). At micro scale, distinct difference was found in microstructures of chicken femur and rabbit femur. At nano scale, we analyzed the shape and size of apatite crystals and the arrangement of collagen fibril. Consequently, femurs of chicken and rabbit had very similar chemical property and structures at nano scale despite of their different species.
김창연 安東大學 1980 安東大學 論文集 Vol.2 No.1
This study was carried out to find out the influence of the each leaf on the growth of garlic bulb from 20 December, 1979 to 20 June, 1980. The result was summalized as follows: 1. The removal of each leaf blade situated in each leaf position was reduced the bulb growth, and the 5th leaf was especially effective to reduce the bulb growth. It reduced 5.8g in bulb weitht. 2. The effect of each remained leaf blade which is situated in each leaf position was recognized, especially the 5th leaf blade increased the bulb weight than the others, the 5th leaf could increase the bulb weight 3. 13g by only one leaf blade and the next was 6th, 4th leaf blade. The effect of remain of the first leaf blade was not expected for the growth of garlic bulb. 3. The removal or remain of the leaf blade was not influenced on the differentiation of clove of garlic bulb. 4. It was suggested that the removal of the first and 2nd leaf was effective to reduce the secondary growth of garlic.