Search

Your search keyword '"Yang Zhong-Yi"' showing total 215 results
Start Over Author "Yang Zhong-Yi"
215 results on '"Yang Zhong-Yi"'

15. Phytochelatin-Mediated Cultivar-Dependent Cd Accumulations of Lactuca sativaand Implication for Cd Pollution-Safe Cultivars Screening

Author

He, Chun-tao, Wang, Xue-song, Hu, Xia-xin, Yuan, Ju, Zhang, Qian-hui, Tan, Xuan-tong, Wang, Yun-fan, Tan, Xiao, and Yang, Zhong-yi

Abstract

Cd pollution-safe cultivar (Cd-PSC) is a feasible strategy to minimize Cd contamination in leafy vegetables. The shoot Cd concentrations of 23 Lactuca sativacultivars under Cd stress ranged from 0.124 to 2.155 mg·kg–1with a maximum cultivar difference of 8 folds. Typical Cd-PSC C16 (L) and high-Cd-accumulating cultivar C13 (H) were screened to investigate the mechanisms of Cd accumulations in L. sativathrough determining Cd concentrations, Cd subcellular distributions, phytochelatin profiles, and phytochelatin biosynthesis-related genes’ expressions. Higher Cd distribution in a heat stable fraction in C13 (H) indicated that the high Cd accumulation trait of C13 (H) mainly depended on the Cd-phytochelatin complexes. Root phytochelatin concentrations were significantly elevated in C13 (H) (5.83 folds) than in C16 (L) (2.69 folds) (p< 0.05) under Cd stress. Significantly downregulated expressions of glutathione S-transferase rather than the regulation of phytochelatin synthesis genes in the root of C13 (H) might be responsible for sufficient glutathione supply for phytochelatins synthesis. These findings suggested that phytochelatin elevation in C13 (H) would favor the Cd root to shoot transportation, which provides new insights into the phytochelatin-related cultivar-dependent Cd accumulating characteristic in L. sativa.

Published
2024
Full Text
View/download PDF

41. First-principles investigation of the structural, elastic, anisotropic and electronic properties of Pmma-carbon.

Author

Fu, Zhi-Fen, Yang, Zhong-Yi, Cheng, Qing, Chen, Hai-Ping, Wang, Bing, and Zhou, Jian-Ping

Subjects
*ELECTRONIC band structure, *MODULUS of rigidity, *BULK modulus, *BAND gaps, *BRITTLE materials
Abstract

An investigation of the structural, elastic, anisotropic and electronic properties of the recently reported Pmma-carbon was performed by means of first-principles calculations in this paper. The Pmma-carbon phase possesses an orthorhombic symmetry with space group Pmma (No. 51). It contains 10 carbon atoms per unit cell and adopts an all-sp3 4+6+8-membered rings bonding network. The structural stability of Pmma-carbon is verified by analysis of the total energy, phonon spectra and elastic constants. The obtained bulk modulus and shear modulus indicate that Pmma-carbon is a brittle material and possesses elastically anisotropic. It is identified that Pmma-carbon is a potential superhard material with a Vickers hardness surpassing 70 GPa, which is lower than that of diamond but comparable with c-BN. The analysis of electronic band structure and density of states reveals that Pmma-carbon is an insulator with a quasi-direct band gap of 4.45 eV. The X-ray diffraction patterns of Pmma-carbon are also provided for future identifying the carbon phase in experiments. The present findings enrich the existing superhard carbon materials family and broaden our understanding of superhard carbon phases. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results