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- 저자 : Huang Yinghong (검색결과 4 건)
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Wang, Huamiao,Lee, Soo Yeol,Huang, E-Wen,Jain, Jayant,Li, Dayong,Peng, Yinghong,Choi, Ho-Suk,Wu, Peidong Elsevier 2020 Journal of the mechanics and physics of solids Vol.135 No.-
<P><B>Abstract</B></P> <P>This study used <I>in-situ</I> neutron diffraction measurements and Elastic ViscoPlastic Self-Consistent polycrystal plasticity model, which incorporates a Twinning and DeTwinning scheme (denoted by EVPSC-TDT), to examine the macro-and micro-mechanical behaviors of a rolled AZ31B plate subjected to uniaxial tension. Three specimens were specifically designed for minimum, maximum and intermediate twinning: (1) loading along the rolling direction, (2) loading along the plate normal, and (3) loading along the direction 45° with respect to the plate normal. Apart from the macroscopic stress strain response, the measured diffraction intensities and internal elastic strains were obtained to examine the activities of the deformation modes at the grain level. The diffraction intensity evolution signaled the volume fraction change of twinning, while the internal elastic strain evolution designated the stress partitioning among the grain orientations. The effect of the surrounding grains on the development of the internal elastic strain was investigated by identifying the corresponding deformation mechanisms. Notably, the corresponding modeling work revealed that the EVPSC-TDT model permitted the prediction of the strain hardening and anisotropic behavior along the directions with minimum, maximum and intermediate twinning at the macroscale, and the evolution of the diffraction intensities and internal strains at the microscale. The results provide a physical understanding of the effects of the load direction, texture and surrounding grains on the role of the deformation modes in hexagonal close-packed polycrystalline materials.</P>
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Xiangge Zhang,Lanjie Zheng,Haojun Zhang,Xinrong Huang,Yinghong Liu,Junjie Zhang,Yu-Feng Hu,Hanmei Liu,Guowu Yu,Yangping Li,Yubi Huang 한국식물학회 2019 Journal of Plant Biology Vol.62 No.3
Plant shoot and root growth is regulated by multiplefactors, including the hormone auxin. A maize brachytic2(br2) mutant displays a shortened shoot and root with highauxin concentration in their apexes, where BR2 encodes anauxin transporter P-glycoprotein1 (PGP1). We employedcomparative transcriptome sequencing to explore the BR2/PGP1-mediated patterns for shoot and root growth amongbr2, wild type (WT), and hybrid F1 (br2 × WT). The resultsshow 352 genes in the br2 shoot and 234 genes in the br2root are differentially expressed compared to WT and F1. Zm00001d045203 and Zm00001d031562 were identified astwo auxin-responsive genes in both the shoot and root. TheZm00001d045203 gene is down-regulated in br2 and encodesan Aux/IAA inhibitor involved in the SCFTIR1/AFB-mediatedauxin signaling pathway. The up-regulated Zm00001d031562gene encodes a small GTPase belonging to the Rab/Yptfamily, which takes part in auxin-mediated responses inArabidopsis. Cytology analysis reveals that reduced cellelongation affects the shoot and root growth of br2. TheZm00001d043477 gene is down-regulated and encodes amember of the cellulose synthase protein family, possiblyreducing cell elongation in the br2 shoot and root. Theseresults reveal the specific regulation of auxin actions and cellresponses by BR2/PGP1.
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Dayong Li,Shaorui Zhang,Weiqin Tang,Shiyao Huang,Yinghong Peng 한국소성가공학회 2010 기타자료 Vol.2010 No.6
In this paper, a constitutive framework based on a crystalline plasticity model is employed to simulate the plastic deformation of AZ31 magnesium alloy, which posses the hexagonal close packed (HCP) crystal structure. Dislocation slip and mechanical twinning are taken into account in the model. The successive integration method is used to determine the active slip systems, and the contribution of twinning to the grain reorientation is treated by the PTR method. The FE model is introduced into ABAQUS/Explicit through a user material subroutine (VUMAT). Three deformation processes of AZ31 magnesium alloy, including tension, compression and a stamping process, are simulated with the present method. The simulation results are compared with experiment and those presented in the literature.
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Ni Xiaojia,Iqbal Shahid,Xue Song,Ni Zhaojun,Huang Yinghong,Gao Zhihong 한국원예학회 2023 Horticulture, Environment, and Biotechnology Vol.64 No.6
Fruit color is an important factor that aff ects its quality. The red-skinned cultivars of Japanese apricot ( Prunus mume Sieb. et Zucc.) have high medicinal economic benefi ts and are mainly used for deep-processed products because of their eye-catching red pigmentation. In contrast, molecular markers related to the red color trait in Japanese apricot fruit haven’t been reported. This study identifi ed twenty-eight SNPs markers based on genome resequencing data. The average number of alleles per SNP marker site in red and green-skinned groups of Japanese apricot cultivars was 1.9643, with heterozygosity ranging from 0.02 to 0.75, and an average Shannon index of 0.517 and 0.4420, respectively, indicating high dispersion and diversity. The total germplasm was divided into two (K = 2) clusters, including 10 and 34. Most red-skinned Japanese apricot cultivars were classifi ed as cluster I, showing the signifi cant genetic diff erence between the two cultivar groups ( Fst = 0.54). According to PIC values, a total of seven SNPs markers showed high polymorphism ( PIC > 0.5), including PmSNP_1 ( 4-CL ), PmSNP_4 ( WD40 ), PmSNP_5 ( MYB29 ), PmSNP_18 ( UFGT6 ) and PmSNP_27 ( UFGT3 ) that were highly correlated with red color trait. Among them, PmUFGT3 exhibited the highest polymorphism, which is signifi cant for future research on developing and utilizing germplasm resources related to red fruit skin.
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