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RISS 인기검색어
- 검색키워드
- 저자 : Xiangxiang Zhao (검색결과 2 건)
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Yiyi Chen,Xiangxiang Wu,Hai Tian Zhao,Yue Ma 한국강구조학회 2006 International Journal of Steel Structures Vol.6 No.3
A series of cyclic loading test were caried out to investigate the performance of steel members with non-compact elementsdeteriorate quickly, but both the members and frames can develop enough non-elastic deformation and keep a certain resistancenecessary to prevent from complete colapse. The test results provide a foundation for the evaluation of the capacity of the non-compact element members and frames. A member section based capacity prediction method is proposed ignoring the so-calledP-Delta effect due to the relatively small axial force ratio of the light weight stel beam-columns, while the concept of effectivemechanism analysis is also tried to predict the ultimate of the frames under lateral cyclic loads. Though the failure type of thesteel beams and columns is diferent from those which have ful plastic capacity, the simplified method is proved to be ableto predict the ultimate satisfied. Furthermore, two criteria are provided to ensure the necesary capacity and ductility while thenon-compact or slender members are applied in the seismic zones; and corresponding limitations of ratio of width to thickness
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Genome-wide identification and characterization of the RIO atypical kinase family in plants
Qingsong Gao,Shuhui Xu,Xiayuan Zhu,Lingling Wang,Zefeng Yang,Xiangxiang Zhao 한국유전학회 2018 Genes & Genomics Vol.40 No.6
Members of the right open reading frame (RIO) atypical kinase family are present in all three domains of life. In eukaryotes, three subfamilies have been identified: RIO1, RIO2, and RIO3. Studies have shown that the yeast and human RIO1 and RIO2 kinases are essential for the biogenesis of small ribosomal subunits. Thus far, RIO3 has been found only in multicellular eukaryotes. In this study, we systematically identified members of the RIO gene family in 37 species representing the major evolutionary lineages in Viridiplantae. A total of 84 RIO genes were identified; among them, 41 were classified as RIO1 and 43 as RIO2. However, no RIO3 gene was found in any of the species examined. Phylogenetic trees constructed for plant RIO1 and RIO2 proteins were generally congruent with the species phylogeny. Subcellular localization analyses showed that the plant RIO proteins were localized mainly in the nucleus and/or cytoplasm. Expression profile analysis of rice, maize, and Arabidopsis RIO genes in different tissues revealed similar expression patterns between RIO1 and RIO2 genes, and their expression levels were high in certain tissues. In addition, the expressions of plant RIO genes were regulated by two drugs: mycophenolic acid and actinomycin D. Function prediction using genome-wide coexpression analysis revealed that most plant RIO genes may be involved in ribosome biogenesis. Our results will be useful for the evolutionary analysis of the ancient RIO kinase family and provide a basis for further functional characterization of RIO genes in plants.
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