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170 results on '"Zhang-Yong Dong"'

1. Endophytic Colletotrichum (Sordariomycetes, Glomerellaceae) species associated with Citrus grandis cv. 'Tomentosa' in China

Author

Jia-Wei Liu, Ishara S. Manawasinghe, Xuan-Ni Liao, Jin Mao, Zhang-Yong Dong, Ruvishika S. Jayawardena, Dhanushka N. Wanasinghe, Yong-Xin Shu, and Mei Luo

Subjects
Botany, QK1-989
Abstract

Colletotrichum species are well-known plant pathogens, saprobes, endophytes, human pathogens and entomopathogens. However, little is known about Colletotrichum as endophytes of plants and cultivars including Citrus grandis cv. “Tomentosa”. In the present study, 12 endophytic Colletotrichum isolates were obtained from this host in Huazhou, Guangdong Province (China) in 2019. Based on morphology and combined multigene phylogeny [nuclear ribosomal internal transcribed spacer (ITS), glyceraldehyde-3-phosphate dehydrogenase (gapdh), chitin synthase 1 (chs-1), histone H3 (his3) actin (act), beta-tubulin (β-tubulin) and glutamine synthetase (gs)], six Colletotrichum species were identified, including two new species, namely Colletotrichum guangdongense and C. tomentosae. Colletotrichum asianum, C. plurivorum, C. siamense and C. tainanense are identified as being the first reports on C. grandis cv. “Tomentosa” worldwide. This study is the first comprehensive study on endophytic Colletotrichum species on C. grandis cv. “Tomentosa” in China.

Published
2023
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2. Stagonosporopsis pogostemonis: A Novel Ascomycete Fungus Causing Leaf Spot and Stem Blight on Pogostemon cablin (Lamiaceae) in South China

Author

Zhang-Yong Dong, Ying-Hua Huang, Ishara S. Manawasinghe, Dhanushka N. Wanasinghe, Jia-Wei Liu, Yong-Xin Shu, Min-Ping Zhao, Mei-Mei Xiang, and Mei Luo

Subjects
Didymellaceae, phoma-like, pathogenicity, phylogeny, Medicine
Abstract

Pogostemon cablin is one of the well-known Southern Chinese medicinal plants with detoxification, anti-bacterial, anti-inflammatory, and other pharmacological functions. Identification and characterization of phytopathogens on P. cablin are of great significance for the prevention and control of diseases. From spring to summer of 2019 and 2020, a leaf spot disease on Pogostemon cablin was observed in Guangdong Province, South China. The pathogen was isolated and identified based on both morphological and DNA molecular approaches. The molecular identification was conducted using multi-gene sequence analysis of large subunit (LSU), the nuclear ribosomal internal transcribed spacer (ITS), beta-tubulin (β-tubulin), and RNA polymerase II (rpb2) genes. The causal organism was identified as Stagonosporopsis pogostemonis, a novel fungal species. Pathogenicity of Stagonosporopsis pogostemonis on P. cablin was fulfilled via confining the Koch’s postulates, causing leaf spots and stem blight disease. This is the first report of leaf spot diseases on P. cablin caused by Stagonosporopsis species worldwide.

Published
2021
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7. Nonadiabatic noncyclic geometric phase of a spin-1/2 particle subject to an arbitrary magnetic field

Author

Zhu, Shi-Liang, Wang, Z. D., and Zhang, Yong-Dong

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We derive a formula of the nonadiabatic noncyclic Pancharatnam phase for a quantum spin-1/2 particle subject to an arbitrary magnetic field. The formula is applied to three specific kinds of magneic fields. (i) For an orientated magnetic field, the Pancharatnam phase is derived exactly. (ii) For a rotating magnetic field, the evolution equation is solved analytically. The Aharonov-Anandan phase is obtained exactly and the Pancharatnam phase is computed numerically. (iii) We propose a kind of topological transition in one-dimensional mesoscopic ring subject to an in-plane magnetic field, and then address the nonadiabatic noncyclic effect on this phenomenon., Comment: 6 pages and 3 figures

Published
2000
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8. Sensing Geographical Impact Factor of Multimedia News Events for Localized Retrieval and News Filtering

Author

Zhang, Xu, Li, Jin-Tao, Zhang, Yong-Dong, Neo, Shi-Yong, 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, Boll, Susanne, editor, Tian, Qi, editor, Zhang, Lei, editor, Zhang, Zili, editor, and Chen, Yi-Ping Phoebe, editor

Published
2010
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12. Multimedia Evidence Fusion for Video Concept Detection via OWA Operator

Author

Li, Ming, Zheng, Yan-Tao, Lin, Shou-Xun, Zhang, Yong-Dong, Chua, Tat-Seng, 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, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Huet, Benoit, editor, Smeaton, Alan, editor, Mayer-Patel, Ketan, editor, and Avrithis, Yannis, editor

Published
2009
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13. Synopsis Alignment: Importing External Text Information for Multi-model Movie Analysis

Author

Li, Ming, Liu, Yang, Zhang, Yong-Dong, Lin, Shou-Xun, 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, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Huang, Yueh-Min Ray, editor, Xu, Changsheng, editor, Cheng, Kuo-Sheng, editor, Yang, Jar-Ferr Kevin, editor, Swamy, M. N. S., editor, Li, Shipeng, editor, and Ding, Jen-Wen, editor

Published
2008
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14. Local Separability Assessment: A Novel Feature Selection Method for Multimedia Applications

Author

Tao, Kun, Lin, Shou-Xun, Zhang, Yong-Dong, Tang, Sheng, 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, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Huang, Yueh-Min Ray, editor, Xu, Changsheng, editor, Cheng, Kuo-Sheng, editor, Yang, Jar-Ferr Kevin, editor, Swamy, M. N. S., editor, Li, Shipeng, editor, and Ding, Jen-Wen, editor

Published
2008
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15. Combining Template Matching and Model Fitting for Human Body Segmentation and Tracking with Applications to Sports Training

Author

Li, Hao-Jie, Lin, Shou-Xun, Zhang, Yong-Dong, 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, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Campilho, Aurélio, editor, and Kamel, Mohamed, editor

Published
2006
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16. Compact and Robust Fingerprints Using DCT Coefficients of Key Blocks

Author

Tang, Sheng, Li, Jin Tao, Zhang, Yong Dong, 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, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Marques, Jorge S., editor, Pérez de la Blanca, Nicolás, editor, and Pina, Pedro, editor

Published
2005
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17. Compact and Robust Image Hashing

Author

Tang, Sheng, Li, Jin-Tao, Zhang, Yong-Dong, 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, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Gervasi, Osvaldo, editor, Gavrilova, Marina L., editor, Kumar, Vipin, editor, Laganà, Antonio, editor, Lee, Heow Pueh, editor, Mun, Youngsong, editor, Taniar, David, editor, and Tan, Chih Jeng Kenneth, editor

Published
2005
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18. Replay Scene Based Sports Video Abstraction

Author

Ouyang, Jian-quan, Li, Jin-tao, Zhang, Yong-dong, 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, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Wang, Lipo, editor, and Jin, Yaochu, editor

Published
2005
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38. Naked 3D Display System with Wide Viewing Angle Based on Head-Tracking Technology

Author

李曙新 Li Shu-xin, 陈瑞改 Chen Rui-gai, 陶宇虹 Tao Yu-hong, 张永栋 Zhang Yong-dong, and 谢佳 Xie Jia

Subjects
Computer science, business.industry, Observer (special relativity), Stereo display, Viewing angle, Head tracking, Electronic, Optical and Magnetic Materials, Visual field, Computer graphics (images), Signal Processing, Computer vision, Artificial intelligence, business, Instrumentation
Abstract

Normal naked 3D display have some defects,such as fixed viewing point,narrow viewing angle.In order to enhance the 3D performance,a 3D display system base on head tracking is introduced.In this system,a camera detects the position of observer's face,and a LC barrier moves the 3D viewing point toward the face simultaneously by changing its transmissive area.Thus the observer can receive good 3D images freely within the visual field of the camera.Because there is no meteyard for this wide viewing angle 3D display,this paper puts forward a test method.The experiment result proved the method is viable.

Published
2013

39. Study and Realization of Auto-Stereoscopic Display Based on Electric-Field-Driven LC Lens

Author

李曙新 Li Shu-xin, 张永栋 Zhang Yong-dong, 刘晓林 Liu Xiaolin, and 谢佳 Xie Jia

Subjects
Computer science, business.industry, Stereoscopy, Software simulation, Electronic, Optical and Magnetic Materials, law.invention, Crosstalk, Optics, law, 3d image, Electric field, Signal Processing, Electrode, Electronic engineering, business, Instrumentation, Refractive index
Abstract

This paper introduces the principle,design solution and verification method of auto-stereoscopic display using an electric-field-driven LC lens.In order to realize the optimal 3D performance,professional software simulation and trail verification were used to adjust the design solution.It provides that a novel design about the electrode,specially discuss the distribution law of cell gap and refractive index,and the effect of retardation on 3D crosstalk.Using novel electrode structure and the rule of LC cell retardation to design electric-field-driven LC lens,3D crosstalk can be reduced to below 3%,the 3D module show excellent 3D image quality.It has very important significance to design and study the electric-field-driven LC lens.

Published
2013

40. Design of Irregular TFT-LCD and its Timing Control Implementation Based on FPGA

Author

程松华 Cheng Song-hua, 张永栋 Zhang Yong-dong, 吴韦建 Wu Wei-jian, 李曙新 Li Shu-xin, and 刘杰 Liu Jie

Subjects
Liquid-crystal display, business.industry, Computer science, law, Thin-film transistor, Embedded system, Signal Processing, business, Field-programmable gate array, Instrumentation, Computer hardware, Electronic, Optical and Magnetic Materials, law.invention
Published
2013

41. Design of Receiver in OpenLDI and Its Implementation with FPGA

Author

刘杰 Liu Jie, 程松华 Cheng Song-hua, 张永栋 Zhang Yong-dong, and 吴韦建 Wu Wei-jian

Subjects
business.industry, Computer science, Clock rate, OpenLDI, Signal, Electronic, Optical and Magnetic Materials, Data mapping, Embedded system, Signal Processing, Data structure alignment, Signal integrity, business, Field-programmable gate array, Instrumentation, Computer hardware, Block (data storage)
Abstract

The input macro block was used in the design of a signal receiver that turned LVDS signal into CMOS signal.The terminal resistors were analyzed;two methods of using terminal resistance were illustrated.The principle and the using of FPGA embedded resis-tance were emphatically analyzed.DDR technology was used,the method of using 3.5 times clock frequency to process 7 times data was researched and the frequency of data process was reduced.A serial to parallel converter was designed by using the data buffer.The method of data alignment and the two signal mapping formats supported by OpenLDI were analyzed.The data that conforms to the two standard data mapping format was output by using a data distributor.Combining with the characteristics of the Xilinx's FPGA clock processing macro block,the method of the clock recovering was researched.The periodic constraints,the special constraints,and the location constraints were used to improve the reliability of system.In order to improve the signal integrity of the whole circuit board and reduce the complexity of PCB layout,the method of inverting LVDS signals was studied.

Published
2013

43. Scene-adaptive coded aperture imaging.

Author

Dai, Feng, Ma, Yike, Gao, Ke, Zhang, Yong Dong, and Wang, Xuehui

Subjects
IMAGING systems, LIQUID crystal on silicon, COMPUTATIONAL photography, ASTRONOMY, GAMMA rays
Abstract

Coded aperture imaging systems have recently shown great success in recovering scene depth and extending the depth-of-field. Tremendous efforts have been focused on designing good coded patterns. The ideal pattern, however, would have to serve two conflicting purposes: 1) it should be broadband to ensure robust deconvolution and 2) it should have sufficient zero-crossings for a high depth discrepancy. This paper presents a simple but effective scene-adaptive coded aperture solution to bridge this gap. We observe that natural scenes often exhibit a dominant edge direction that can be caused by structure, texture, shading, etc. We therefore apply depth-discriminative codes along the dominant direction and broadband codes along its orthogonal direction. To physically implement this scheme, we adopt a two-shot scheme. Firstly, we capture a scene image with a pinhole aperture and analyze image content to determine the dominant direction. Secondly, we apply the proposed coding scheme using the programmable Liquid Crystal on Silicon (LCoS). Experiments on a broad range of synthetic and real scenes show that our technique is able to combine advantages of the state-of-the-art patterns for recovering better quality depth map and all-focus images. [ABSTRACT FROM AUTHOR]

Published
2019
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45. Hepatitis C virus infection: Its role in chronic liver diseases

Author

Zhang Yong-yuan, Guo Lin-sheng, Zhang Yong-dong, Li Lin, Yu Di-xia, Li Fang-he, Wang You-kun, Yu Zhi-qun, Hao Lian-jie, Bengt Göran Hansson, Andeis Widell, and Erik Nordenfelt

Subjects
China, HBsAg, Hepacivirus, Hepatitis C virus, Chronic liver disease, medicine.disease_cause, Polymerase Chain Reaction, Management of Technology and Innovation, Prevalence, medicine, Humans, Hepatitis Antibodies, Hepatitis B in China, Hepatitis B Surface Antigens, biology, business.industry, virus diseases, RNA-Directed DNA Polymerase, Hepatitis C, Hepatitis C Antibodies, Hepatitis B, biology.organism_classification, medicine.disease, Virology, digestive system diseases, biology.protein, RNA, Viral, Antibody, business
Abstract

In order to find out the infectious rate of hepatitis C virus (HCV) among chronic liver diseases, we investigated antibodies against hepatitis C virus and HCVRNA by method of ELISA, RIBA and RT-PCR in 410 patients with chronic liver disease. The prevalence of HCV infection was found to be 4%. Whereas the positive rate of HBsAg and HBV-DNA of these cases was 69% and 58%, respectively. There is no statistical significance between HCV infectious rate of patients with positive and negative HBsAg. The relative low infectious rate of HCV infection among chronic hepatic diseases indicates that HBV infection plays a more important role in causing chronic hepatitis than that of HCV. Thus, special emphasis should be paid to the preventive and therapeutic measures against hepatitis B in China.

Published
1993

49. Study of Thick Gaseous Electron Multipliers Gain Stability and Some Influencing Factors

Author

Zhou, Xiao-Kang, primary, Liu, Qian, additional, Chen, Shi, additional, Huang, Wen-Qian, additional, Wang, Bin-Long, additional, Zhang, Yong-Dong, additional, Ge, Dong-Sheng, additional, Liu, Hong-Bang, additional, Zheng, Yang-Heng, additional, Xie, Yi-Gang, additional, Dong, Yang, additional, Zhang, Qiang, additional, Chang, Jie, additional, Wang, Jing, additional, Li, Min, additional, and Zhou, Yan, additional

Published
2014
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