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T. V. Malin D. S. Milakhin V. G. Mansurov Yu. G. Galitsyn A. S. Kozhuhov V. V. Ratnikov A. N. Smirnov V. Yu. Davydov K. S. Zhuravlev 《Semiconductors》2018,52(6):789-796
The effect of atomic aluminum deposited onto sapphire substrates with different nitridation levels on the quality of AlN layers grown by ammonia molecular-beam epitaxy is investigated. The nitridation of sapphire with the formation of ~1 monolayer of AlN is shown to ensure the growth of layers with a smoother surface and better crystal quality than in the case of the formation of a nitrided AlN layer with a thickness of ~2 monolayers. It is demonstrated that the change in the duration of exposure of nitrided substrates to the atomic aluminum flux does not significantly affect the parameters of subsequent AlN layers. 相似文献
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DL Kraitchman AA Young DC Bloomgarden ZA Fayad L Dougherty VA Ferrari RC Boston L Axel 《Canadian Metallurgical Quarterly》1998,40(2):311-326
A single integrated examination using regional measurements of perfusion from contrast-enhanced MRI and three-dimensional (3D) strain from tissue-tagged MRI was developed to differentiate infarcted myocardium from adjacent tissue with functional abnormalities. Ten dogs were studied at baseline and 10 days after a 2-hour occlusion of the left anterior descending coronary artery (LAD). Strain was determined using a 3D finite element model. Two-dimensional measurements of hypoenhancing regions were highly correlated with myocardial viability (r = 0.96). Signal intensity versus time curves obtained from contrast-enhanced MRI were used for quantitative perfusion analysis. The remote and adjacent noninfarcted tissue of the dogs with LAD occlusion, as well as the infarcted tissue, exhibited abnormal deformation patterns as compared to normal dogs (positive predictive value (PPV) of strain determination of infarction = 66%). Integration of contrast-enhanced MRI results with 3D strain analysis enabled the delineation of the myocardial infarction (PPV = 100%) from functionally compromised myocardium. This integrated cardiac examination shows promise for noninvasive serial assessment of potentially jeopardized noninfarcted myocardium to study the process of infarct remodeling and expansion. 相似文献
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G. G. Aldashukurova N. V. Shikina A. V. Mironenko Z. A. Mansurov Z. R. Ismagilov 《International Journal of Self-Propagating High-Temperature Synthesis》2011,20(2):124-127
Fiber glass supported nanosized Co and Co-Ni catalysts were prepared by solution-combustion synthesis and characterized for their structure and catalytic activity. 相似文献
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Z. A. Mansurov 《International Journal of Self-Propagating High-Temperature Synthesis》2011,20(4):266-268
The synthesis of fullerenes, carbon nanotubes, and superhydrophobic soot in hydrocarbon flames was briefly overviewed. 相似文献