http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Studies on Genes and Biochemical Events Induced by Carbon Source Starvation in Plant Cells
Kim, Sehee,Lee, Sunmin,Lee, Taekkyun,Lee, Woosung 한국식물학회 1999 Journal of Plant Biology Vol.42 No.4
Carrot (Daucus carota L) suspension cells exhibit a number of physiological responses when carbon sources in the medium are depleted (i.e., carbon-source starvation). We previously reported that activities of several phospholipid catabolic enzymes, such as phospholipase D (PLD) and lipolytic acyl hydrolase (LAH), are induced to provide cells with alternative carbon sources. In this study we report sequence of PLD cDNA. When starvation was prolonged over approximately five days, cells started to die. To analyze the initiation of cell death, we examined the degradation of DNA and activity of DNA endonuclease. Preliminary results showed that DMA degradation occurred at the onset of cell death. Our findings suggest that carrot cells exhibit two different phases-acclimation response and cell death--during starvation. In working toward a long-term objective of understanding the whole scope of biochemical events during starvation, we have also catalogued the genes induced by starvation.
모바일 소셜 네크워크 게임을 위한 가상화 기반 분산 게임서버의 설계 및 구현
이원진 ( Wonjin Lee ),이택균 ( Taekkyun Lee ),김강석 ( Kangseok Kim ),홍만표 ( Manpyo Hong ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.1
스마트폰의 보급으로 모바일 소셜 네트워크 게임(SNG: Social Network Game)을 즐기는 사용자들이 증가하고 있다. 그러나, SNG의 특성에 맞는 자원 활용률을 고려한 효율적인 게임서버에 대한 연구는 매우 부족한 실정이다. 본 논문은 가상화 기반으로 SNG게임서버를 설계 및 구현한다. 또한 가상화 기반분산 게임서버의 CPU 사용률과 Memory 사용량을 분석하여 게임서버의 자원 활용률을 보인다. 이를 토대로 SNG게임서버 환경구축의 기반지식을 제공한다.
벼의 엽신 및 캘러스에서 Cytokinin 유도성 A-type 및 C-type Cyclin 유전자의 발현 분석
이홍근,최승호,황현식,박정안,이택견,박종범,오정균,이석찬,Lee Honggun,Choi Seungho,Hwang Hyunsik,park Jungan,Lee Taekkyun,Park Jongbum,Auh Chungkyoon,Lee Sukchan 한국식물생명공학회 2005 식물생명공학회지 Vol.32 No.1
세포 주기의 조절에 있어 중요한 역할을 담당하고 있는 cyclin 유전자들을의 발현 양상을 벼에서 유도한 캘러스와 엽신을 이용하여 관찰하였다. 특히 캘러스를 이용한 분석결과 2,4-D와 kinetin이 조합된 배지 러에 7일 동안 암 배양한 후 이를 cytokinin만이 첨가된 배치로 옮겼을 때 A-, B-, C-type cyclin 유전자들의 발현이 더 증가되었다. 또한 벼실생의 각 기관에서 cyclin 유전자의 발현양을 조사한 결과 다른 기관들에 비해 잎에서 A-, B, C-type cyclin 유전자들이 더 많이 발현하였으나 잎에 cytokinin의 종류와 농도를 다르게 처리하여 24시간동안 배양한 결과에서는 zeatin을 제외하고는 cytokinin의 종류와 양이 cyclin 유전자들의 발현에 큰 영향을 미치지 못함을 알 수 있었다. 본 실험에서는 벼 cyclin유전자의 발현과 식물생장조절제 처리와의 상관 관계에 대해서 조사하였다. The expression patterns of cyclin genes, which play a crucial role on cell cycle control, were analyzed with rice calli and leaf blades from seedlings. When callus was transferred from media containing the combinations of 2,4-D and kinetin under the dark conditions to medium supplemented with cytokinin-only on 7 days after the cultures, the expression levels of A-, B- and C-type cyclins from callus were increased significantly. Despite the fact that cyclin genes were well expressed on leaf blades rather than other organs in rice seedlings, rice leaf blades grown on the medium containing various combinations and concentrations of cytokinin for 24 hours had no major effect on the expression patterns of cyclins except zeatin. The relation between cytokinin regulation and the expression of cyclins of rice is discussed.
Study on the Emerging VOCs Analysis Method using Purge&Trap GC/MS in Raw Water and Treated Water
Sowon Kang(강소원),Hyunseung Cho(조현승),Taekkyun Choi(최택균),Sunku Park(박선구),Hakseok Kim(김학석),Sangrak Lee(이상락),Juhyun Park(박주현) 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.5
Volatile Organic Compounds (VOCs) are unsaturated hydrocarbons that cause odors and ozone through volatilization into the atmosphere. In this study, the analysis method of VOCs was performed using Purge & Trap gas chromatography/mass spectrometry. Analysis method was discussed and optimized. The results of 14 VOCs have shown that Method Detection Limit (MDL) was in the range from 0.0098 μg/L to 0.6519 μg/L and Limit of Quantification (LOQ) was in the range from 0.0313 μg/L to 2.0762 μg/L. The results of accuracy and precision ranged from 85.9 % to 114.8 % and 1.0 % to 3.3 %. Investigation of the matrix effects on tap water has shown that this method is suitable for VOCs analysis. Raw water and treated water of 15 water treatment plants were studied by developed method. As a results, Chloromethane was detected in the range from N/D to 1.924 μg/L of raw water and in the range from N/D to 4.595 μg/L of treated water. Detection frequency was 50.0 % of raw water and 86.6 % of treated water. In the case of Chloromethane in raw water, the frequency of detection was decreased during the period of wet season. In addition, in the case of water treatment plant that does not use a coagulant or uses river-side filtered water, the formation of chloromethane was less in treated water. These results are intended to be used as scientific basis data for the preparation of the water quality environment policy system in the future.