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1,404 results on '"Xu, Guoliang"'

108. The complete chloroplast genome sequence and phylogenetic analysis of Strobilanthes dalzielii (W.W.Sm.) Benoist 1935 (Acanthaceae).

Author

Zeng, Nuoguo, Gao, Weiping, Chen, Zhihui, Chong, Jing Yuan, Lee, Shiou Yih, and Xu, Guoliang

Subjects
CHLOROPLAST DNA, WHOLE genome sequencing, ACANTHACEAE, SEQUENCE analysis, TRANSFER RNA, RIBOSOMAL RNA
Abstract

Strobilanthes dalzielii of Acanthaceae is an herb species with potentially extensive applications for its pharmaceutical and ornamental values. Due to taxonomic complications and limited genetic information, the structural characteristics, and phylogenetic relationships of the S. dalzielii chloroplast genome were assembled and characterized here for the first time. The complete chloroplast genome of S. dalzielii was 144,580 bp in length. The genome is quadripartite in structure and consists of a large single-copy region (92,137 bp) and a small single-copy region (17,669 bp), which are separated by a pair of inverted repeats (each 17,387 bp). A total of 125 genes were annotated, including 80 protein-coding, 37 transfer RNA, and eight ribosomal RNA genes. The overall GC content was 36.4%. Phylogenetic analysis based on the complete chloroplast genome sequence of 21 taxa within the tribe Ruellieae of Acanthaceae using the maximum likelihood and Bayesian inference methods revealed that Strobilanthes diverged after Ruellia; S. dalzielii is closely related to S. tonkinensis. The genomic data obtained from this study will serve as valuable information to the species delimitation and genetic classification of Strobilanthes. [ABSTRACT FROM AUTHOR]

Published
2024
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113. Discrete schemes for Gaussian curvature and their convergence

Author

Xu, Zhiqiang and Xu, Guoliang

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Computational Geometry, Computer Science - Graphics, Computer Science - Numerical Analysis
Abstract

In this paper, several discrete schemes for Gaussian curvature are surveyed. The convergence property of a modified discrete scheme for the Gaussian curvature is considered. Furthermore, a new discrete scheme for Gaussian curvature is resented. We prove that the new scheme converges at the regular vertex with valence not less than 5. By constructing a counterexample, we also show that it is impossible for building a discrete scheme for Gaussian curvature which converges over the regular vertex with valence 4. Finally, asymptotic errors of several discrete scheme for Gaussian curvature are compared.

Published
2008

114. Utilizing Bat Algorithm to Optimize Membership Functions for Fuzzy Association Rules Mining

Author

Song, Anping, Song, Jiaxin, Ding, Xuehai, Xu, Guoliang, Chen, Jianjiao, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Benslimane, Djamal, editor, Damiani, Ernesto, editor, Grosky, William I., editor, Hameurlain, Abdelkader, editor, Sheth, Amit, editor, and Wagner, Roland R., editor

Published
2017
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115. CVT-Based 3D Image Segmentation for Quality Tetrahedral Meshing

Author

Hu, Kangkang, Zhang, Yongjie Jessica, Xu, Guoliang, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Barneva, Reneta P., editor, Brimkov, Valentin E., editor, and Tavares, João Manuel R.S., editor

Published
2017
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144. Construction of Minimal Catmull-Clark’s Subdivision Surfaces with Given Boundaries

Author

Pan, Qing, Xu, Guoliang, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Mourrain, Bernard, editor, Schaefer, Scott, editor, and Xu, Guoliang, editor

Published
2010
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145. Construction of Subdivision Surfaces by Fourth-Order Geometric Flows with G 1 Boundary Conditions

Author

Xu, Guoliang, Pan, Qing, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Mourrain, Bernard, editor, Schaefer, Scott, editor, and Xu, Guoliang, editor

Published
2010
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146. Well-Posed Gaussian-Like Models for Image Denoising and Sharpening

Author

Xiong, Xiangtuan, Li, Xinge, Xu, Guoliang, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Kobsa, Alfred, editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Weikum, Gerhard, editor, Zhang, Yongjie Jessica, editor, and Tavares, João Manuel R. S., editor

Published
2014
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148. N- and S-codoped carbon quantum dots for enhancing fluorescence sensing of trace Hg2+.

Author

Wang, Yujie, Xu, Guoliang, Zhang, Xinghe, Yang, Xiaona, Hou, Hongbo, Ai, Wei, and Zhao, Liju

Abstract

Carbon-quantum-dot-based fluorescence sensing of Hg2+ is a well-known cost-effective tactic with fast response and high sensitivity, while rationally constructing heteroatom-doped carbon quantum dots with improved fluorescence sensing performances through tuning the electronic and chemical structures of the reactive site still remains a challenging project for monitoring trace Hg2+ in aquatic ecosystems to avoid harm resulting from its high toxicity, nonbiodegradabilty and accumulative effects on human health. Herein, intriguing N,S-codoped carbon quantum dots were synthesized via a facile one-step hydrothermal procedure. As an admirable fluorescent probe with plentiful heteroatom-related functional groups, these N,S-codoped carbon quantum dots can exhibit an absolute fluorescence quantum yield as high as 11.6%, excellent solubility and stability over three months, remarkable sensitivity for Hg2+ detection with an attractive detection limit of 0.27 μg L−1 and admirable selectivity for Hg2+ against thirteen other metal ions. Density functional theory calculations reveal that electron-enriched meta-S of the unique graphitic N with homocyclic meta-thiophene sulfur structure can regulate this N site to have more electrons and preferable affinity towards Hg, hence achieving enhanced fluorescence quenching due to greater charge transfer from N to Hg after the coordination interaction. This strategy provides a promising avenue for precisely designing purpose-made quantum dots with the dedicated fluorescence sensing applications. [ABSTRACT FROM AUTHOR]

Published
2023
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