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| 1 | Microstructure and properties of novel Al-Ce-Sc,Al-Ce-Y,Al-Ce-Zr and Al-Ce-Sc-Y alloy conductors processed by die casting,hot extrusion and cold drawing显示文摘In order to overcome the trade-off between the strength and electrical conductivity of aluminum alloy conductors,the new Al-Ce-Sc,Al-Ce-Y,Al-Ce-Zr and Al-Ce-Sc-Y alloys were prepared by die casting,high temperature homogenization treatment,hot extrusion and cold drawing.Adding Sc and Y eliminated the dendrite segregation of the as-cast Al-0.2 Ce alloy and promoted the formation of equiaxed grains with the average grain size of 142.5μm.The Al-0.2 Ce-0.2 Sc-0.1 Y alloy inherited the great tensile properties of Al-0.2 Ce-0.2 Sc alloy and the high electrical conductivity of Al-0.2 Ce-0.1 Y alloy simultaneously.After cold drawing and annealing at 200℃for 5 h,the ultimate tensile strength of Al-0.2 Ce-0.2 Sc-0.1 Y alloy reached 200 MPa and 198 MPa,the elongation reached 6.8%and 8.5%,and the electrical conductivity reached 61.01%and 61.77%,respectively.The main second phase of Al-0.2 Ce-0.2 Sc-0.1 Y alloy after hot extrusion were Al_(13)Fe_3 Ce containing a few Y and Si atoms.The larger size and proportion of the second phase greatly reduced the concentration of solute Fe and Si atoms and the addition of Y significantly decreased the density of defects after cold drawing compared to Al-0.2 Ce-0.2 Sc alloy,which improved electrical conductivity of the alloy.Furthermore,the dispersed and coherent nano-size Al_3 Sc precipitions of Al-0.2 Ce-0.2 Sc-0.1 Y alloy greatly improved strength,elongation and heat resistance.Compared with Al-0.2 Ce-0.2 Sc alloy,the lower density of dislocation,stacking fault and subgrain boundary and the larger size of Al_3 Sc precipitions with enrichment of Y atoms enable the Al-0.2 Ce-0.2 Sc-0.1 Y alloy to maintain high strength,elongation and electrical conductivity after annealing. | Weiyi Wang Qinglin Pan Geng Lin Xiaoping Wang Yuqiao Sun Xiangdong Wang Ji Ye Yuanwei Sun Yi Yu Fuqing Jiang Jun Li Yaru Liu | 2020 | Journal of Materials Science & Technology2020，58，23： | 4 |
| 2 | Efficient de novo assembly and modification of large DNA fragments显示文摘Synthetic genomics has provided new bottom-up platforms for the functional study of viral and microbial genomes.The construction of the large,gigabase(Gb)-sized genomes of higher organisms will deepen our understanding of genetic blueprints significantly.But for the synthesis and assembly of such large-scale genomes,the development of new or expanded methods is required.In this study,we develop an efficient pipeline for the construction of large DNA fragments sized 100 kilobases(kb)or above from scratches and describe an efficient method for“scar-free”engineering of the assembled sequences.Our method,therefore,should provide a standard framework for producing long DNA molecules,which are critical materials for synthetic genomics and metabolic engineering. | Shuangying Jiang Yuanwei Tang Liang Xiang Xinlu Zhu Zelin Cai Ling Li Yingxi Chen Peishuang Chen Yuge Feng Xin Lin Guoqiang Li Jafar Sharif Junbiao Dai | 2022 | Science China(Life Sciences)2022，65，7： | 1 |
| 3 | MiR- 540 as a novel adipogenic inhibitor impairs adipogenesis via suppression of PPAR7 显示文摘 | CHEN Lin CHEN Yuanwei ZHANG Sheng | 2015 | J Cell Bioehem2015，116，6： | 1 |
| 4 | A universal etching-free transfer of MoS2 films for applications in photodetectors显示文摘从生长底层转移瞬间 2 电影到目标底层上是为他们的实际应用的一个关键问题。而且,避免样品降级和底层破坏仍然是大挑战,因为当前的转移方法不可避免地采用蚀刻的湿化学药品,处理。我们为由使用 ultrasonication 转移瞬间 2 电影到任意的底层上开发了一个蚀刻免费的转移方法。简短,在在聚合物涂的瞬间 2 之间的接口的产生 ultrasonication 的 microbubbles 的倒塌电影和底层导致足够的力量到 delaminate 瞬间 2 电影。用这个方法,瞬间 2 电影能从所有底层(硅石,云母,锶 titanate,和蓝宝石) 被转移并且保留原来的样品形态学和质量。这个方法保证一个简单转移过程并且允许生长底层的复用,没有包含任何危险蚀刻剂。蚀刻免费的转移方法是可能的在光电探测器支持瞬间 2 的宽广应用程序。 | Donglin Ma Jianping Shi Qingqing Ji Ke Chen Jianbo Yin Yuanwei Lin Yu Zhang Mengxi Liu Qingliang Feng Xiuju Song Xuefeng Guo Jin Zhang Yanfeng Zhang Zhongfan Liu | 2015 | Nano Research2015，8，11： | 1 |
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