نتایج جستجو برای: carbon spheres
تعداد نتایج: 301195 فیلتر نتایج به سال:
In this study, mesoscopic ceria- organic core–shell hollow spheres with tunable luminescence and magnetism were demonstrated. The layer was grown on the surface of ceria by reaction citric acid solution ethylenediamine via hydrothermal process. With increasing time from 0 to 6 h, phase varies discontinuous carbon- rich dots a nanometrical which contains randomly distributed Ce3+- clusters. grow...
Given a sphere of radius r > 1 in the n-dimensional Euclidean space, we study the coverings of this sphere with unit spheres. Our goal is to design a covering of the lowest covering density, which defines the average number of unit spheres covering a point in a bigger sphere. For growing n, we obtain the covering density of (n lnn)/2. This new upper bound is half the order n lnn established in ...
We have investigated the microstructure and bonding of two biomass-based porous carbon chromatographic stationary phase materials (alginic acid-derived Starbon ® and calcium alginate-derived mesoporous carbon spheres (AMCS)) and a commercial porous graphitic carbon (PGC), using high resolution transmission electron microscopy, electron energy loss spectroscopy (EELS), N2 porosimetry and X-ray p...
Lipid-bilayer coated nanosized bimodal mesoporous carbon spheres for controlled release applications
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید