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The effects of post-deposition annealing temperatures (600–1150°C) in 95%N2–5%H2 ambient on the electrical and physical properties of metal-organic decomposed CeO2 spin-coated on n-type 4H-SiC were investigated. As the annealing temperature increased, oxides changed from polycrystalline to preferred oriented structures and, eventually, to silicate structures. The oxides also showed an incremental increase in surface roughness as annealing temperature increased. The Lorentz-Lorenz law was utilized to determine the density of the oxides. The highest density was obtained by a sample annealed at the highest temperature. Electrical results showed that this sample obtained the lowest leakage current density. Parameters affecting this observation were also investigated.  相似文献   
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Targeted drug delivery to the brain parenchyma, i.e., in brain tumor patients, by means of magnetically supported carrier delivery through the tight vascular endothelium of the blood-brain barrier is of critical biomedical importance. We were interested in delineating the first steps in successful brain drug delivery, which focuses on the interactions between magnetically guided yet freely blood circulating nanoparticles and the blood-brain barrier. We employed an in vivo model to quantitatively determine changes in cerebrovascular flow rate and volume during magnetically guided exposure of circulating nanoparticles.  相似文献   
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The single diffraction dissociation process pp → (pπ+π?)p has been studied at the CERN ISR at √s = 45 GeV and 0.1 < ?t < 0.6 GeV2. The reaction is dominated by nucleon resonance production: pp → pN (1520) and pp → pN(1688) with cross-sections (0.25 ± 0.08) mb and (0.56 ± 0.19) mb respectively.  相似文献   
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