Five samples of Ag-In alloy films with different compositions were deposited on Si substrates by magnetron sputtering.The optical properties of these films were studied by spectroscopic ellipsometry.The dielectric fun...Five samples of Ag-In alloy films with different compositions were deposited on Si substrates by magnetron sputtering.The optical properties of these films were studied by spectroscopic ellipsometry.The dielectric functions of the alloy films significantly increase as the In concentration in the Ag-In alloy films is increased.For Ag-based alloys,a typical interband transition occurs near 3.9 e V.In the tested alloy films,however,this transition energy exhibits a blue shift with increasing In concentration.The optical properties of the alloy films were found to be tunable by varying their In concentrations.The values of the Quality(Q)factors of the Ag0.93In0.07 film are higher than those of other alloy films.At a certain wavelength range,the alloys'Q factors even exceed those of pure Au and Cu.Our results showthat Ag-In alloys have significant potential for application in metamaterials and plasmonic devices.展开更多
本文研究了虾青素对秀丽隐杆线虫衰老和正常生理功能的影响及其相关作用机制。试验设立对照组和虾青素组(0.08 m M、0.16 m M、0.40 m M、0.80 m M),观察N2野生型线虫的寿命及相关生理指标(生殖能力、吞咽频率和移动力),评价不同浓度虾...本文研究了虾青素对秀丽隐杆线虫衰老和正常生理功能的影响及其相关作用机制。试验设立对照组和虾青素组(0.08 m M、0.16 m M、0.40 m M、0.80 m M),观察N2野生型线虫的寿命及相关生理指标(生殖能力、吞咽频率和移动力),评价不同浓度虾青素对线虫衰老过程的影响,明确虾青素作用的最佳剂量;选用最佳剂量的虾青素处理N2野生型、daf-16基因缺陷型和age-1基因缺陷型线虫,分析其寿命长短,探讨虾青素在胰岛素信号通路上延缓线虫衰老的作用机理。结果表明,虾青素可显著延长线虫的寿命(P<0.05),0.16 m M虾青素的作用效果最佳,线虫的平均寿命达到26.03 d,显著延长了31.68%;虾青素对线虫的生殖能力和吞咽频率没有显著影响,能显著增强10 d和15 d线虫的移动力。0.16 m M虾青素可显著提高age-1缺陷型线虫的寿命,对daf-16缺陷型线虫的寿命无显著影响。因此,虾青素可显著延长线虫寿命,其作用机制与胰岛素信号通路上的daf-16基因密切相关。展开更多
基金Supported by National Natural Science Foundation of China(61275160,11374055,11174058,60938004)Projects of Science and Technology Commission of Shanghai Municipality(12XD1420600)
文摘Five samples of Ag-In alloy films with different compositions were deposited on Si substrates by magnetron sputtering.The optical properties of these films were studied by spectroscopic ellipsometry.The dielectric functions of the alloy films significantly increase as the In concentration in the Ag-In alloy films is increased.For Ag-based alloys,a typical interband transition occurs near 3.9 e V.In the tested alloy films,however,this transition energy exhibits a blue shift with increasing In concentration.The optical properties of the alloy films were found to be tunable by varying their In concentrations.The values of the Quality(Q)factors of the Ag0.93In0.07 film are higher than those of other alloy films.At a certain wavelength range,the alloys'Q factors even exceed those of pure Au and Cu.Our results showthat Ag-In alloys have significant potential for application in metamaterials and plasmonic devices.
文摘本文研究了虾青素对秀丽隐杆线虫衰老和正常生理功能的影响及其相关作用机制。试验设立对照组和虾青素组(0.08 m M、0.16 m M、0.40 m M、0.80 m M),观察N2野生型线虫的寿命及相关生理指标(生殖能力、吞咽频率和移动力),评价不同浓度虾青素对线虫衰老过程的影响,明确虾青素作用的最佳剂量;选用最佳剂量的虾青素处理N2野生型、daf-16基因缺陷型和age-1基因缺陷型线虫,分析其寿命长短,探讨虾青素在胰岛素信号通路上延缓线虫衰老的作用机理。结果表明,虾青素可显著延长线虫的寿命(P<0.05),0.16 m M虾青素的作用效果最佳,线虫的平均寿命达到26.03 d,显著延长了31.68%;虾青素对线虫的生殖能力和吞咽频率没有显著影响,能显著增强10 d和15 d线虫的移动力。0.16 m M虾青素可显著提高age-1缺陷型线虫的寿命,对daf-16缺陷型线虫的寿命无显著影响。因此,虾青素可显著延长线虫寿命,其作用机制与胰岛素信号通路上的daf-16基因密切相关。
