http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Combinatorial Synthesis of In-Ga-Sn-O Channel Transparent Thin-film Transistors
문준철,윤준석,주홍렬,박장우 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.6
Transparent thin-film transistors (TTFTs) with compositionally-graded In-Ga-Sn-O (IGSO)channels were deposited by using a combinatorial approach. The mobilities, the on-off current ratios, and the threshold voltages of the IGSO TTFTs ranged from 0 to 13 cm2V−1s−1, 1 to 2 × 107, -26 to 12 V, respectively. The optimal channel compositions of the IGSO TTFTs were found to be In0.50Ga0.28Sn0.22O and In0.60Ga0.35−0.32Sn0.05−0.08O. The TTFTs with In0.50Ga0.28Sn0.22O channels showed a mobility as high as 11.5 cm2V−1s−1 with an on/off current ratio of 1.4 × 107and a threshold voltage of 1.9 V. The composition-dependent transfer curve shifts and the on/off current variations empirically established the role of each element in the performance of the TTFTs.
문준철,장철성,함덕재,황선구,박용찬,이찬희 한국유전학회 2014 Genes & Genomics Vol.36 No.2
Higher plants have acquired complex molecularmechanisms to withstand heat stress through years ofnatural evolutionary processes. Although physiologicalresponses to elevated temperatures have been well studied,thermotolerance mechanisms at the molecular level arepoorly understood in rice plants. In order to identify thegenes involved in the thermotolerance of rice, we used apublicly available microarray dataset and identified anumber of heat stress-responsive genes. Herein, we reportdetails of the rice gene OsHSP1, which is upregulated byheat stress. In addition, OsHSP1 is highly expressed whenexposed to salt and osmotic treatments but not cold treatment. Sequence analysis indicated that OsHSP1 belongs tothe heat shock protein 90 family of genes. The biologicalfunction of OsHSP1 was investigated by heterologousoverexpression in Arabidopsis. Transgenic Arabidopsisoverexpressing the OsHSP1 gene exhibited enhancedthermotolerance but was hypersensitive under salt andosmotic stresses. Subcellular localization analysis indicatedthat the OsHSP1 protein is predominantly targeted to thecytosol and nucleus under heat stress. The coexpressionnetwork showed 39 interactions for the functionallyinteracting genes of OsHSP1. Taken together, these findingssuggest that OsHSP1 is a heat-inducible gene that mayplay an important role in the thermotolerance of rice.
문준철,이병무,김재윤,백성범,권영업,송기태 한국작물학회 2014 한국작물학회지 Vol.59 No.3
Transcription factors are essential for theregulation of gene expression in plant. They are binding toeither enhancer or promoter region of DNA adjacent to the geneand are related to basal transcription regulation, differentialenhancement of transcription, development, response tointercellular signals or environment, and cell cycle control. The mechanism in controlling gene expression of transcriptioncan be understood through the assessment of the completesequence for the maize genome. It is possible that the maizegenome encodes 4,000 or more transcription factors becauseit has undergone whole duplication in the past. Previously,several transcription factors of maize have been characterized. In this review article, the transcription factors were selectedusing Pfam database, including many family members incomparison with other family and listed as follows: ABI3/VP1, AP2/EREBP, ARF, ARID, AS2, AUX/IAA, BES1,bHLH, bZIP, C2C2-CO-like, C2C2-Dof, C2C2-GATA, C2C2-YABBY, C2H2, E2F/DP, FHA, GARP-ARR-B, GeBP, GRAS,HMG, HSF, MADS, MYB, MYB-related, NAC, PHD, andWRKY family. For analyzing motifs, each amino acid sequencehas been aligned with ClustalW and the conserved sequencewas shown by sequence logo. This review article will contributeto further study of molecular biological analysis and breedingusing the transcription factor of maize as a strategy forselecting target gene
Genetic Relationships among Korean Adlay, Coix lachryma-jobi L., Landraces Based on AFLPs
문준철,이경준,이상규,김경희,이병무,장정희,박정수,김성기 한국작물학회 2005 Korean journal of crop science Vol.50 No.2
Thirty-two germplasms of Korean adlay landraces were examined to analyse the genetic relationship through the amplified fragment length polymorphism (AFLP) approach. Total number of AFLP products generated by 12 selective primer combinations was 882. The number of polymorphic fragments by each primer combination greatly varied from 4 to 51with a mean of 20.3, bands visible on the polyacrylamide gel. A genetic similarity coefficient was used for cluster analysis following UPGMA (unweighted pair grouping method of averages) method. The resulting clusters were represented in the form of a dendrogram. The clustering was not tight in the dendrogram. There was generally no clear grouping of the adlay according to the geographic regions in which germplasms were collected. The present AFLP analysis imply that although Korean adlay displayed a larger amount of AFLP variation within germplasms, the variation was shown independently without reflecting a clinal variation. This study demonstrated that AFLP method can be used to examine the genetic relationships among different germplasms of adlay.
문준철,허화영,권영업,이상규,김경희,이병무,강문석 한국작물학회 2004 Korean journal of crop science Vol.49 No.6
The effects of sonication and vacuum infiltration on transformation efficiency was investigated by using immature embryos of Korean wheat as explants. Two Agrobacterium tumefaciens strains, KYRT1 and EHA105, carrying pCAMBIA 1305.1 were used. Transformation efficiency was demonstrated by the detection of -glucuronidase (GUS) activity. GUS expression showed clear difference among Korean wheat cultivars. Geurumil showed higher GUS expression efficiency 79.1% compared with other cultivars. The effects of the duration of vacuum infiltration and sonication treatment showed a tendency high GUS expression efficiency by their combination. In comparison with other Agrobacterium strains, KYRT1 showed high efficiency in most Korean cultivars.
[자유기고문]CDN을 이용한 전자파 전도내성시험의 측정불확도
문준철,임영채 한국전자파학회 2005 전자파기술 Vol.16 No.4
본 논문은 CDN(Coupling/Decoupling Network)을 이용한 전자파 전도 내성 시험의 측정 불확도를 연구하였다. 측정 불확도의 영향 인자를 추출하여 인자별 불확도를 산출하였다. 측정 불확도 인자는 인가 레벨 교정시 반복 측정, 150~50 Ω 아답터의 삽입 손실, 신호 발생기의 정확도, 파워미터의 정확도, 전력 증폭기의 하모닉, 전력 증폭기와 CDN의 부정합, CDN과 파워미터 사이의 부정합에 의한 불확도를 고려하였다. 불확도 산출 결과 확장 불확도는 95% 신뢰 구간에서 1.17 dB(k=2)를 가지며, 정보기기의 경우 시험 전압 3 V에서 ±0.42 V의 오차 범위를 가지는 것을 알 수 있었다. 또한 시험기기간의 부정합에 의한 불확도가 불확도 인자에서 가장 큰 영향을 미치는 것을 알 수 있었으며, 전자파 전도 내성시험의 경우 임피던스 매칭이 가장 중요한 것으로 나타났다.
문준철,김주희,장철성 한국응용생명화학회 2016 Applied Biological Chemistry (Appl Biol Chem) Vol.59 No.2
In this study, we report the development of a multiplex polymerase chain reaction (PCR) method using species-specific primers for the simultaneous detection of Poaceae members, including adlay, barley, maize, rice, and wheat, based on sequence polymorphism in DNA-directed RNA polymerase beta-prime chain genes (rpoC2). Species-specific primer pairs were constructed with a common forward primer and reverse primers differing by sequence polymorphisms and gene location. Each primer pair was designed to PCR-amplify products of five chloroplast genes of 443, 346, 278, 221, and 96 bp for rice, barley, adlay, wheat, and maize, respectively. Multiplex PCR with a series of template DNA concentrations (0.01–10 ng/lL) was used to optimize amplification of fragments from pooled Poaceae. In addition, speciesspecific primers were used to detect components of seven commercial flour-mixed products. This combination of the sensitivity of multiplex PCR with the specificity of primers designed to detect unique species has broad applications in the processed food industry.