마늘의 摘葉處理가 鱗莖 肥大에 미치는 影響

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.

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.

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.

주파수 선택적 페이딩 채널에서 CDMA 트래픽 채널의 성능 해석 ( Performance Analysis of a CDMA traffic channel in the ferquency selective fading environment )

김창연,홍대형 한국통신학회 1995 한국통신학회 학술대회논문집 Vol.- No.-

蜂群의 Polyethylen 被覆이 郡勢擴張에 미치는 影響

김창연 安東大學安東文化硏究所 1989 安東文化叢書 Vol.1 No.-

월동 봉군의 조춘 관리에 있어서 인위적인 보온 조치가 여왕봉의 산란에 미치는 영향을 조사하기 위하여 1973. 11. 20∼1974. 4. 25까지 본 시험을 실시한바 그 결과는 다음과 같다. 1. 초춘에 봉군을 Polyethylen House를 설치하여 보온하니 처리구는 표준 무처리구에 비해서 산란수가 증가하였다. 2. Polyethylen 피복구와 무처리구와의 산란권의 차이는 3월 5일에는 262방으로 가장 적었고 차차 증가하여 4월 14일에는 888방으로 가장 많고 그 이후는 차이가 감소하였다.

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.

동경과학축전의 발명교육에의 접목을 위한 착안점

김창연,Kim, Chang-Yeon 한국발명진흥회 2006 發明特許 Vol.31 No.10

환절기 농장관리 점검 - 종계 사양관리/방란을 줄이는 방법 홍보국

김창연,Kim, Chang-Yeon 대한양계협회 2015 월간 양계 Vol.47 No.9

蛋白質과 脂肪水準이 다른 食餌給食이 動物體內 脂肪 및 Cholesterol 含量變動에 미치는 影響

金昌淵 고려대학교 의과대학 1977 고려대학교 의과대학 잡지 Vol.14 No.1

멀칭 資料가 마늘의 生育에 미치는 影響 : 葉의 生長을 中心으로

김창연 安東大學 1981 安東大學 論文集 Vol.3 No.1

For the purpose of investigating the influence of Mulching Materials upon the growth of leaf, I studied on it on the 17th of March through 24th of June, 1980, and the result of it turned out as follows: 1. The budding of leaf is faster than the control treatment, and the transparent poly film mulching is faster than the black poly film. 2. In leaf position the speed of coming out of the leaf is faster than the transparent poly film mulching and double mulching (transparent poly film under straw top) by some seven days compared with control treatment from the 6th leaf. 3. Mulching being done for keeping warmth, there were many leaf area, which were increasing in individual leaf position. 4. The leaf area of a day`s area was higher than the double mulching (transparent poly film mulching under straw top) by 149% compared with control treatment. 5. There was a tendency that the phenomenon of drying leaf was decreased in mulching area, the double mulching (transparent poly film mulching under straw top) the least. 6. There came out leaf areas and the leaf area of a day-reserving-area was abundant, and the double mulching in which the phenomenon of drying leaf was less produced was increased by 129% compared with control treatment.