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| 1 | Phylogenetic and genetic characterization of a 2017 clinical isolate of H7N9 virus in Guangzhou,China during the fifth epidemic wave显示文摘Pathogenic H7N9 influenza viruses continue to pose a public health concern. The H7N9 virus has caused five outbreak waves of human infections in China since 2013. In the present study, a novel H7N9 strain(A/Guangdong/8 H324/2017) was isolated from a female patient with severe respiratory illness during the fifth wave of the 2017 H7N9 epidemic. Phylogenetic analysis showed that the H7N9 viruses collected during the fifth wave belong to two different lineages: the Pearl River Delta lineage and the Yangtze River Delta lineage. The novel isolate is closely related to the Pearl River Delta H7N9 viruses, which were isolated from patients in Guangdong Province. The novel H7N9 isolate has an insertion of three basic amino acids in the cleavage site of hemagglutinin(HA), which may enhance virulence in poultry. The 2017 isolate also possesses an R292 K substitution in the neuraminidase(NA)protein, which confers oseltamivir resistance. This study highlights the pandemic potential of the novel H7N9 virus in mammals;thus, future characterization and surveillance is warranted. | Yongqiang Deng Chunlin Li Jianfeng Han Yingfen Wen Jian Wang Wenxing Hong Xiaofeng Li Zhongyu Liu Qing Ye Jing Li Changshuai Zhou Lei Yu Chengfeng Qin Fuchun Zhang Tao Jiang | 2017 | Science China(Life Sciences)2017，60，12： | 9 |
| 2 | Influence of foraminifera on formation and occurrence characteristics of natural gas hydrates in fine-grained sediments from Shenhu area, South China Sea显示文摘Marine gas hydrates accumulate primarily in coarse-grained, high-permeability layers; however, highly saturated natural gas hydrates have been discovered in the fine-grained sediments of Shenhu area, South China Sea(SCS). This may be explained by key factors, such as the great abundance of foraminifera shells. In this paper, by analyzing the SCS foraminifera structure and performing hydrate formation experiments in the foraminifera shells, the contribution of foraminifera to hydrate accumulation in the SCS was investigated from a microscopic point of view. Simulations of hydrate formation were carried out in both pure SCS foraminifera shells and the host sediments. Pore structures in typical foraminifera were studied by use of micro-focus X-ray computed tomography(CT) and scanning electron microscopy(SEM). Hydrate growth and occurrence characteristics in the foraminifera shells were observed in-situ. The results showed that the presence of foraminifera significantly enhanced the effective porosity of the SCS sediments. Moreover, while the hydrates grew preferentially in the chambers of the coarse-grained foraminifera by adhering to the inner walls of the foraminifera shells, no apparent hydrate accumulation was observed in the fine-grained or argillaceous matrix. These findings provide a basis for further studies on the accumulation mechanism of hydrates and physical properties of hydrate reservoir in the South China Sea. | LI ChengFeng HU GaoWei ZHANG Wei YE YuGuang LIU ChangLing LI Qing SUN JianYe | 2016 | Science China Earth Sciences2016，59，11： | 7 |
| 3 | Room temperature ionic liquid 1-ethyl-3-hexylimidazolium-bis (tri- fluoromethylsulfonyl)-imide as lubricant for steel-steel con- tact显示文摘 | Lu Qimlng Wang Haizhong Ye Chengfeng | 2004 | Tribology International2004，37，7： | 1 |
| 4 | Tribologi- cal performance of room-temperature ionic liquids as lubricant 显示文摘 | Liu Weimin Ye Chengfeng Gong Qingye | 2002 | TribologyLetters2002，13，2： | 1 |
| 5 | Room-tem- perature ionic liquids: A novel versatile lubricant显示文摘 | Ye Chengfeng Liu Weimin Chen Yunxia | 2001 | Chemi- cal Communications2001，，21： | 1 |
| 6 | Room-tem-perature ionic liquids: A novel versatile lubricant显示文摘 | Ye Chengfeng Liu Weimin Chen Yunxia et aI | 2001 | Chemi- cal Communications2001，21，21： | 1 |
| 7 | Tribological Performance of Room-Temperature Ionic Liquids as Lubricant显示文摘 | Weimin Liu Chengfeng Ye Qingye Gong Haizhong Wang Peng Wang | 2002 | Tribology Letters2002，，2： | 1 |
| 8 | Tribological performance of room-temperature ionic liquids as lubricant 显示文摘 | Liu Weimin Ye Chengfeng Gong Qingye | 2002 | Tribology Letters2002，13，2： | 1 |
| 9 | A novel synthesis of hexasubstituted cyclotri-phosphazenes显示文摘 | Chengfeng Ye Zefu Zhang Weimin Jiu | 2002 | Synthetic Communications2002，32，2： | 1 |
| 10 | Tribological behavior of Dy-sialon ceramics sliding against Si3N4 under lubrication of fluorine-containing oils显示文摘 | Chengfeng Ye Weimin Liu Yunxia Chen | 2002 | Wear2002，253，： | 1 |
| 11 | 显示文摘 | Ye Chengfeng Zhang Zefu Liu Weimin | 2001 | Chinese ChemicalLetters2001，12，4： | 1 |
| 12 | Tribological Performance of Room-Temperature Ionic Liquids as Lubricant显示文摘 | Weimin Liu Chengfeng Ye Qingye Gong Haizhong Wang Peng Wang | 2002 | Tribology Letters2002，，2： | 1 |
| 13 | ,24,5-Trinitroimidazole-based energetic salts显示文摘 | Gao Haixiang Ye Chengfeng Om D Gupta | 2007 | Chem Eur J2007，，13： | 1 |
| 14 | Room-temperature ionic liquids: a novel versatile lubricant显示文摘 | Ye Chengfeng Liu Weimin Chen Yunxia et aI | 2001 | Chem Commun2001，，21： | 1 |
| 15 | Relationship between molecular structures and tribological properties of phosphazene lubricants显示文摘 | Ye Chengfeng Zhang Zefu | 2002 | Wear2002，252，： | 1 |
| 16 | A novel synthesis of hexasubstituted cyclotri- phosphazenes显示文摘 | Zhang Zefu Liu Weimin | 2002 | Synthetic Communications2002，32，2： | 1 |
| 17 | Room temperature ionic liquids: A kind of novel versatile lubricant显示文摘 | YE Chengfeng LIU Weimin CHEN Yunxia | 2001 | ChemicalCommunication2001，37，21： | 1 |
| 18 | 2,4,5-Trinitro-imidazole-based energetic salts显示文摘 | Haixiang Gao Chengfeng Ye Om D Gupta | | 0，，： | 1 |
| 19 | Relationship between molecular structures and tribological properties of phosphazene lubricants显示文摘 | LIU Weimin YE Chengfeng ZHANG Zefu | 2002 | Wear2002，252，5： | 1 |
| 20 | Tribological performance of room-temperature ionic liquids as lubricant显示文摘 | Liu Weimin Ye Chengfeng Wang Peng | 2002 | Tribology Letters2002，13，2： | 1 |
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