نتایج جستجو برای: la2o3
تعداد نتایج: 425 فیلتر نتایج به سال:
The hemocompatibility of La(2)O(3)-doped TiO(2) films with different concentration prepared by radio frequency (RF) sputtering was studied. The microstructures and blood compatibility of TiO(2) films were investigated by scan electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and UV-visible optical absorption spectroscopy, respectively. With the increasing of the La(2)O(3) conce...
A germanate-tellurite glass (GeO2-TeO₂-K₂O-Nb₂O₅-La₂O₃) with thulium doping has been investigated for application as a laser material around 2.0 μm regions. Under the 808 nm laser diode pumped, intense 1.8 μm emission is obtained. Based on the absorption spectra, radiative properties are predicted using Judd-Ofelt theory. The maximum value of emission cross-section of Tm(3+) around 1.8 μm can r...
A single-step method was developed for biodiesel production from unrefined or waste oils using a series of heterogeneous zinc and lanthanum mixed oxides. Effects of metal oxide molar ratio, free fatty acids (FFA) and water content in feedstock, molar ratio of methanol and oil, and reaction temperature on the yield of biodiesel were investigated. A strong interaction between Zn and La species wa...
Hechang Lei ( ),1 Emil S. Bozin,1 A. Llobet,2 V. Ivanovski,3 V. Koteski,3 J. Belosevic-Cavor,3 B. Cekic,3 and C. Petrovic1 1Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Uptown, New York 11973, USA 2Lujan Neutron Scattering Center, Los Alamos National Laboratory, MS H805, Los Alamos, New Mexico 87545, USA 3Institute of Nuclear Sciences Vinca, Univers...
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