摘要:<正>作为一种新兴的非传统稳定同位素,目前珊瑚稳定Sr同位素的研究十分有限。因此,对于珊瑚骨骼的δ88/86Sr...<正>作为一种新兴的非传统稳定同位素,目前珊瑚稳定Sr同位素的研究十分有限。因此,对于珊瑚骨骼的δ88/86Sr分馏机制研究程度不深,能否作为古气候替代指标还没有明确的结论。已有研究获得的一个共识是珊瑚骨骼的δ88/86Sr比海水偏负约0.2‰,对于其分馏机制,不同的研究获得的结果不一致甚至互相矛盾。早期的研究认为浅水造礁珊瑚(Fietzke and Eisenhauer,2006)和显示全部
摘要:<正>三氧化钼(Mo O3)具有较大的禁带宽度(>3 e V)和较高的功函数(6.9 e V),其层状相α-Mo O3性质稳定...<正>三氧化钼(Mo O3)具有较大的禁带宽度(>3 e V)和较高的功函数(6.9 e V),其层状相α-Mo O3性质稳定,并且光电性质容易被外部插入的离子所调控,因此被广泛应用在光致变色、电致变色和太阳显示全部
摘要:IN THIS ARTICLE,ETHYL PHENYLACETATE(EPA)/ISOPHORONE DIISOCYANATE(IPDI) LOADED NANOCOMPOSITE MICROCA...IN THIS ARTICLE,ETHYL PHENYLACETATE(EPA)/ISOPHORONE DIISOCYANATE(IPDI) LOADED NANOCOMPOSITE MICROCAPSULES WERE PREPARED.THIS MODIFIED ENCAPSULATION PROCEDURE UTILIZED THE INTERRACIAL POLYMERIZATION BETWEEN IPDI AND DIETHYLENETRIAMINE(DETA) TEMPLATED PICKERING DROPLETS STABILIZED BY SIO2 NANOPARTICLES.SIZES OF EPA/IPDI MICROCAPSULES COULD BE CONTROLLED BY ADJUSTING THE OIL CONTENT OF PICKERING EMULSION.AND SIZES OF CAPSULES EXHIBITED A WIDE RANGE DISTRIBUTION.FROM THERMAL GRAVIMETRIC ANALYSIS (TGA),CORE MATERIAL FILL CONTENT WAS ESTIMATED AT 53 WT %.SCANNING ELECTRON MICROSCOPY (SEM) DETERMINATION INDICATED THAT THE CAPSULES HAD ROBUST AND COMPACT WALL,WITH A UNIFORM THICKNESS OF CA.2 μM.THE EMULSIONS STABILIZED BY PARTICLES ARE CALLED PICKERING EMULSIONS.THE THCHNOLOGY BASED ON PICKERING EMULSION TEMPLATE IS POWERFUL TOOL TO PREPARE ORGANIC/INORGANIC HYBRID MIEROPARTICLES WITH A CORE-SHELL STRUCTURE,WHICH HAS A SIGNIFICANT POTENTIAL APPLICATION IN THE FABRICATION FOR MATERIALS WITH A MOCRO-/NANOMETER STRUCTURE.显示全部