http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Combinational Prediction Model for Transverse Crack of Asphalt Pavement
Chen Zhang,Hainian Wang,Xu Yang,Zhanping You 대한토목학회 2018 KSCE Journal of Civil Engineering Vol.22 No.6
Reliable transverse crack prediction can benefit the design and maintenance and improve the reliability of field investigation forasphalt pavement in permafrost regions of Qinghai-Tibet plateau. This study adopted the crack prediction model in the newlydeveloped pavement design method named Pavement ME Design (PMED) and the modified grey predictive model (GM (1, 1)) topredict the transverse crack of asphalt pavement in permafrost regions. The complementary advantages for the two models based onthe weight distribution theory were discussed, and a combined prediction model (PME-DGM combination model) taking accountinto region characteristics was developed. Finally, the applicability of combined prediction model was analyzed. The result showedthat, the predictive accuracy of PME-DGM combination model established by the error sum of squares reciprocal method was thehighest, the best weight allocations for each sub-model were LNCH = 0.601 and LDGM = 0.399, and the combination model can beapplied in the permafrost region involved in this paper; The combination model is more appropriate in predicting the developmenttrend of transverse crack of project-level asphalt pavement in permafrost regions; For PMED predictive model, this study raised amodified method base on a third-party model (DGM (1,1), and the result showed that the method worked well in the permafrostregion of Qinghai-Tibet plateau.
Molecular Cloning and Characterization of a Novel Stem-specific Gene from Camptotheca acuminata
Pi, Yan,Liao, Zhihua,Chai, Yourong,Zeng, Hainian,Wang, Peng,Gong, Yifu,Pang, Yongzhen,Sun, Xiaofen,Tang, Kexuan Korean Society for Biochemistry and Molecular Biol 2006 Journal of biochemistry and molecular biology Vol.39 No.1
In higher plants, P450s participate in the biosynthesis of many important secondary metabolites. Here we reported for the first time the isolation of a new cytochrome P450 cDNA that expressed in a stem-specific manner from Camptotheca acuminata (designated as CaSS), a native medicinal plant species in China, using RACE-PCR. The full-length cDNA of CaSS was 1735 bp long containing a 1530 bp open reading frame (ORF) encoding a polypeptide of 509 amino acids. Bioinformatic analysis revealed that CASS contained a heme-binding domain PFGXGRRXCX and showed homology to other plant cytochrome P450 monooxygenases and hydroxylases. Southern blotting analysis revealed that there was only one copy of the CaSS present in the genome of Camptotheca acuminata. Northern blotting analysis revealed that CaSS expressed, in a tissue-specific manner, highly in stem and lowly in root, leaf and flower. Our study suggests that CaSS is likely to be involved in the phenylpropanoid pathway.