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Your search keyword '"Jiang, Weiguo"' showing total 404 results
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404 results on '"Jiang, Weiguo"'

51. Optic-Fiber Temperature Sensor

Author

Zhang, Yundong, primary, Su, Huaiyin, additional, Ma, Kai, additional, Zhu, Fuxing, additional, Guo, Ying, additional, and Jiang, Weiguo, additional

Published
2018
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57. Continuous Long Time Series Monitoring of Urban Construction Land in Supporting the SDG 11.3.1—A Case Study of Nanning, Guangxi, China.

Author

Ling, Ziyan, Jiang, Weiguo, Lu, Yuan, Ling, Yurong, Zhang, Ze, and Liao, Chaoming

Subjects
TIME series analysis, URBAN growth, METROPOLIS, LAND cover, REMOTE sensing, SUSTAINABLE development
Abstract

Enhancing the spatio-temporal dynamic monitoring of the construction land of emerging major cities provides the basis for understanding the effects of human activities on the earth's ecological environment changes, which is regarded as an important way to improve human wellbeing and to achieve the UN SDGs. This paper, which uses Nanning as an example, adopts 30 m annual remote sensing land cover datasets from 1990–2021 to elaborately analyze the temporal evolution and spatial expansion of construction land and to evaluate the sustainable development level based on SDG 11.3.1. The conclusions of this paper are as follows: (1) For Nanning City, during 1990–2021, construction land area increased from 54.77 km2 to 326.33 km2—a nearly five-fold increase. Spreading expansion and finger-like expansion along roads played a leading role during the development of the construction land in Nanning. Liangqing and Yongning are the future directions of urban development. The LCRPGR of Nanning declined with one peak period around 1995, and the LCRPGR was relatively stable with a high intensity of land use. (2) For the other emerging major cities, continuous long duration data are more suitable for urban construction land monitoring compared with traditional sparse time-series monitoring. The rich information derived from continuous long duration data can help decision makers to formulate and implement more comprehensive measures. The research paradigm adopted in this study can be applied in other cities. The newly developed urban districts will have foreseeable high sustainable development risks, and urban development strategies at the international, national, and urban levels could reduce those risks and promote the realization of UN SDGs from different angles and with different intensities. [ABSTRACT FROM AUTHOR]

Published
2023
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73. Reduction of the amount of intestinal secretory IgA in fulminant hepatic failure

Author

Liu Dong-yan, Jiang Weiguo, and Liu Pei

Subjects
Fulminant hepatic failure, Secretory IgA, IgA, Secretory component, Intestine, Medicine (General), R5-920, Biology (General), QH301-705.5
Abstract

Intestinal barrier dysfunction plays an important role in spontaneous bacterial peritonitis. In the present study, changes in the intestinal barrier with regard to levels of secretory immunoglobulin A (SIgA) and its components were studied in fulminant hepatic failure (FHF). Immunohistochemistry and double immunofluorescent staining were used to detect intestinal IgA, the secretory component (SC) and SIgA in patients with FHF (20 patients) and in an animal model with FHF (120 mice). Real-time PCR was used to detect intestinal SC mRNA in the animal model with FHF. Intestinal SIgA, IgA, and SC staining in patients with FHF was significantly weaker than in the normal control group (30 patients). Intestinal IgA and SC staining was significantly weaker in the animal model with FHF than in the control groups (normal saline: 30 mice; lipopolysaccharide: 50 mice; D-galactosamine: 50 mice; FHF: 120 mice). SC mRNA of the animal model with FHF at 2, 6, and 9 h after injection was 0.4 ± 0.02, 0.3 ± 0.01, 0.09 ± 0.01, respectively. SC mRNA of the animal model with FHF was significantly decreased compared to the normal saline group (1.0 ± 0.02) and lipopolysaccharide group (0.89 ± 0.01). The decrease in intestinal SIgA and SC induced failure of the intestinal immunologic barrier and the attenuation of gut immunity in the presence of FHF.

Published
2011

81. Polymeric and Polymerizable Surfactants

Author

Modi, J. C., Sastry, N. V., Cogan, Kathleen A., Gast, Alice P., Saimbi, J. J., Bahadur, P., Parsonage, Edward, Tirrell, Matthew, Watanabe, Hiroshi, Nuzzo, Ralph, Maechling-Strasser, C., Clouet, F., Francois, J., Trillaud, M., Laversanne, R., Bellocq, A. M., Rao, Y. K., Nagar, T. N., Urquiola, M. B., Dimonie, V. L., El-Aasser, M. S., Leca, Minodora, Zhang, J., Yang, Z., Kopecek, J., Andrade, J., Pandya, K. P., Bednar, Bohumil, Trnena, Tang, Xiaozhen, Jiang, Weiguo, Xu, Xiangming, González Arce, M. L., Pérez, A. Valea, Mittal, K. L., editor, and Shah, D. O., editor

Published
1991
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98. The nucleation and growth mechanism of Ni-Sn eutectic in a single crystal superalloy

Author

Li Xiangwei, Langhong Lou, Jiang Weiguo, and Li Wang

Subjects
010302 applied physics, Materials science, Scanning electron microscope, Intermetallic, Nucleation, Recalescence, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Microstructure, 01 natural sciences, Inorganic Chemistry, Superalloy, Crystallography, 0103 physical sciences, Materials Chemistry, 0210 nano-technology, Electron backscatter diffraction, Eutectic system
Abstract

The microstructure of single crystal superalloy with and without tin layer on the surface of as-cast and heat-treatment state was investigated by optical microscope (OM) and scanning electron microscopy (SEM). The composition of different regions on the surface was tested by energy dispersive X-ray (EDS). The reaction intermetallic compound (IMC) formed in the heat treatment process was confirmed by X-ray diffraction (XRD). The orientations of different microstructure in samples as heat treatment state were determined by electron back-scattering diffraction (EBSD) method. The porosity location in the interdendritic region was observed by X-ray computed tomography (XCT). The experiment results showed that the remained Sn on the surface of the superalloy reacted with Ni, and then formed Ni 3 Sn 4 in the as-cast state. Sn enriched by diffusion along the porosity located in the interdendritic region and γ + γ′ (contain a little of Sn) eutectic and Ni 3 Sn 2 formed in single crystal superalloy during heat treatment, and the recalescence behaviors were found. Ni 3 Sn 2 nucleated independently in the cooled liquid at the front of (γ + γ′) (Sn) eutectic. The nucleation and growth mechanism of the eutectic and Ni 3 Sn 2 IMC during heat treatment was discussed in the present paper.

Published
2017

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