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1,010 results on '"Liu, Xiao-Yan"'

40. Short term outcomes of extremely low birth weight infants from a multicenter cohort study in Guangdong of China

Author

Jia, Chun-Hong, Feng, Zhou-Shan, Lin, Xiao-Jun, Cui, Qi-Liang, Han, Sha-Sha, Jin, Ya, Liu, Guo-Sheng, Yang, Chuan-Zhong, Ye, Xiao-Tong, Dai, Yi-Heng, Liang, Wei-Yi, Ye, Xiu-Zhen, Mo, Jing, Ding, Lu, Wu, Ben-Qing, Chen, Hong-Xiang, Li, Chi-Wang, Zhang, Zhe, Rong, Xiao, Huang, Wei-Min, Shen, Wei, Yang, Bing-Yan, Lv, Jun-Feng, Huo, Le-Ying, Huang, Hui-Wen, Rao, Hong-Ping, Yan, Wen-Kang, Yang, Yong, Ren, Xue-Jun, Liu, Dong, Wang, Fang-Fang, Diao, Shi-Guang, Liu, Xiao-Yan, You, Chu-Ming, Meng, Qiong, Wang, Bin, Zhang, Li-Juan, Huang, Yu-Ge, Ao, Dang, Li, Wei-Zhong, Chen, Jie-Ling, Chen, Yan-Ling, Li, Wei, Chen, Zhi-Feng, Ding, Yue-Qin, Li, Xiao-Yu, Huang, Yue-Fang, Lin, Ni-Yang, Cai, Yang-Fan, Wan, Zhong-He, Ban, Yi, Bai, Bo, Li, Guang-Hong, Yan, Yue-Xiu, and Wu, Fan

Published
2022
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42. Analysis of genetic characteristics of 436 children with dysplasia and detailed analysis of rare karyotype

Author

Miao Zong-Yu, Chen Shi-Feng, Wu Hong, Liu Xiao-Yan, and Shao Hui-Yuan

Subjects
dysplasia, trilogy 21, 4q-syndrome, monomer 9p, 18q-syndrome, Biology (General), QH301-705.5
Abstract

Chromosomal abnormality is one of the important causes of dysplasia in children. However, due to regional and ethnic differences, the reported rates of chromosomal abnormalities in patients with dysplasia vary greatly. Moreover, the clinical manifestations in children with rare chromosomal diseases were heterogeneous. So, we retrospectively analyzed the karyotype results of 436 children with dysplasia and conducted a detailed analysis of rare chromosomal diseases. The results showed that chromosomal abnormalities were present in 181 of 436 cases. Intellectual disability, dysmorphology, congenital malformations, the disorder of sexual development, and short stature were the main five clinical symptoms in children with chromosomal abnormalities. Moreover, 136 cases of Trisomy 21 (Tri21) were detected, of which 130 were standard Tri21, 5 were robertsonian Tri21, and 1 was chimera type. In addition, 16 cases of rare abnormal karyotype, including complex Tri21, complex Turner syndrome, 4p-syndrome, 18q-syndrome, and 5p-syndrome, were also detected. In summary, chromosome abnormality is one of the important causes of dysplasia in children. Furthermore, prenatal screening and diagnosis could play a great significance in preventing dysplasia in children. In addition, the retrospective analysis of rare cases is valuable for clinical diagnosis and risk assessment of recurrence.

Published
2022
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43. High-resolution SIMS U-Th-Pb geochronology of small-size (<5 μm) monazite: Constraints on the timing of Qiuling sediment-hosted gold deposit, South Qinling Orogen, central China.

Author

Chen, Lei, Hofstra, Albert H., Li, Xian-Hua, Li, Qiu-Li, Liu, Yu, Ling, Xiao-Xiao, Liu, Xiao-Yan, and Jian, Wei

Subjects
SECONDARY ion mass spectrometry, HYDROTHERMAL deposits, HYDROTHERMAL alteration, ARSENOPYRITE, SPATIAL resolution, GOLD ores, SULFIDE minerals, PYRITES
Abstract

Accurately determining the timing of hydrothermal mineralization for sediment-hosted disseminated gold (SHDG) deposits is difficult because of a lack of both suitable chronometers and in situ techniques with the required spatial resolution and precision. The lack of precise age determinations on gold deposits has hindered understanding of their genesis and relation to the geodynamic setting. The Qiuling-Jinlongshan deposit is a typical SHDG deposit located in the eastern South Qinling Orogen (SQO), with 109 t Au at an average grade of 6.17 g/t. Devonian and Carboniferous metasedimentary rocks host structurally controlled gold mineralization, which is associated with silica-carbonate alteration. Pyrite, arsenopyrite, and arsenian pyrite are major gold carriers, and gold also occurs as native gold grains and invisible gold in the sulfides. In this study, the well-defined hydrothermal overgrowth rims (~2 μm) of single monazite grains, associated with disseminated auriferous arsenian pyrite and arsenopyrite in low-grade metasedimentary rocks, yield U-Pb ages of239 ± 13 Ma (2σ) by high spatial resolution secondary ion mass spectrometry (SIMS). The hydrothermal monazites are cogenetic to the primary gold mineralization where they are closely associated with gold-bearing sulfides. This new age implies that the early to middle Triassic mineralization event in the eastern SQO was related to the Triassic tectonic transition from compression to transpression in the Qinling Orogen after the closure of the Mianlue Ocean. This study highlights the 2-μm high spatial resolution SIMS monazite U-Th-Pb dating method as a powerful tool for determining the timing of SHDG deposits worldwide. It is crucial to examine monazite textures and their link to hydrothermal alteration before carrying out the isotopic dating of monazite. [ABSTRACT FROM AUTHOR]

Published
2024
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45. A Middle Eocene lowland humid subtropical “Shangri-La” ecosystem in central Tibet

Author

Su, Tao, Spicer, Robert A., Wu, Fei-Xiang, Farnsworth, Alexander, Huang, Jian, Del Rio, Cédric, Deng, Tao, Ding, Lin, Deng, Wei-Yu-Dong, Huang, Yong-Jiang, Hughes, Alice, Jia, Lin-Bo, Jin, Jian-Hua, Li, Shu-Feng, Liang, Shui-Qing, Liu, Jia, Liu, Xiao-Yan, Sherlock, Sarah, Spicer, Teresa, Srivastava, Gaurav, Tang, He, Valdes, Paul, Wang, Teng-Xiang, Widdowson, Mike, Wu, Meng-Xiao, Xing, Yao-Wu, Xu, Cong-Li, Yang, Jian, Zhang, Cong, Zhang, Shi-Tao, Zhang, Xin-Wen, Zhao, Fan, and Zhou, Zhe-Kun

Published
2020

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