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- 저자 : Yi-ran Hu (검색결과 2 건)
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Wei Liu,Chaochao Hu,Wenli Xie,Peng Chen,Yi Zhang,Ran Yao,Kexin Li,Qing Chang 한국유전학회 2018 Genes & Genomics Vol.40 No.5
The red-necked phalarope is a wonderful species with specific morphological characters and lifestyles. Mitochondrial genomes, encoding necessary proteins involved in the system of energy metabolism, are important for the evolution and adaption of species. In this study, we determined the complete mitogenome sequence of Phalaropus lobatus (Charadriiformes: Scolopacidae). The circular genome is 16714 bp in size, containing 13 PCGs, two ribosomal RNAs and 22 tRNAs and a high AT-rich control region. The AT skew and GC skew of major strand is positive and negative respectively. Most of PCGs are biased towards A-rich except ND1. A codon usage analysis shows that 3 start codons (ATG, GTG and ATA), 4 stop codons (TAA, TAG, AGG, AGA) and two incomplete terminate codons (T–). Twenty two transfer RNAs have the typical cloverleaf structure, and a total of ten base pairs are mismatched throughout the nine tRNA genes. The phylogenetic tree based on 13 PCGs and 2 rRNA genes indicates that monophyly of the family and genus Phalaropus is close to genus Xenus plus Tringa. The analysis of selective pressure shows 13 protein-coding genes are evolving under the purifying selection and P. lobatus is different from other Scolopacidae species on the selective pressure of gene ND4. This study helps us know the inherent mechanism of mitochondrial structure and natural selection.
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Seismic Response of Two Site Models and Their Effects on the Railway Cable-Stayed Bridge
Jin Zhang,Zhen-yu Yang,Da-ping Yuan,Shi-xiong Zheng,Yi-ran Hu 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.12
In order to accurately analyze the seismic response of the site and their effects on a railway cable-stayed bridge, the site condition of the railway cable-stayed bridge was surveyed, and geotechnical exploration holes ZK1 and ZK2 were set near the left and right tower of the bridge to gain the detailed geological data, then 32 representative ground motions records were selected corresponding to the site characteristics, and the equivalent linear and nonlinear model were established to analyze the site seismic response of 32 representative ground motions based on the Deepsoil Software. Next, to investigate the influence of site seismic response on the long-span railway cable-stayed bridge, the seismic response of the cable-stayed bridge considering site effect are calculated and evaluated via time history analysis under one-dimensional and multi-point excitation based on the ANSYS platform. At last, several critical and meaningful conclusions are drawn.
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