Эффективные минеральные покрытия для упрочнения поверхности металлических материалов
Despite the increased interest in Chinese export painting of the XVIII–XIX centuries, the research of it had found its reflection particularly in description of this art form history, its cultural component, in description of myriads collections stored in the funds of museums, archives and libraries around the world, collectors and their interests and journeys to China. However, artistic techniques and materials utilized by Chinese masters can also become a source of valuable information on cultural and economic cooperation between the two great civilizations - Chinese and Western. In this regard, domestic and foreign scholars commenced conducting researches involving modern methods of image analysis in the study of Chinese export painting. These methods include reflection and polarized microscopy, electron microscopy, as well as non-destructive techniques, such as multi-spectral analysis, optical coherence tomography (OCT), microfade spectrometry, Raman spectroscopy and X-ray fluorescence spectroscopy (XRF).
The results of development experimental sample of mesure with relief elements size less than 100 nm for calibration of optical, near-field and electron microscopy are presented.
The structural and morphological features of samples containing titanium dioxide, obtained by the sulfate method in the presence of methylene blue dye МеВ (sample with η-TiO2) and in its absence (sample with anatase), have been determined using a complex of analytical methods. For the sample with η-TiO2, the sizes of titanium dioxide crystallites (5.0(2) nm) are smaller than the nanoparticle sizes (5.5–.0 nm), which does not exclude their defect structure. This sample exhibited a higher tendency of nanoparticles to agglomeration (the presence of strong bonds between nanoparticles) and a low tendency to aggregation (the presence of weak bonds). It is shown that a МеВ-modified sample with η-TiO2 has high photocatalytic activity in the visible spectral range in the model reaction of methyl orange dye decomposition.
The possibility of applying protective coatings on the inner surface of the thin Cu-tubes on devices such as plasma focus. The coatings obtained by the erosion of the anode material (Cu, W) with a plasma pulse. It is found that the coating composition is a complex material comprising: Cu, O, C, W, Fe, Ni. The most durable coatings prepared by treating the inner surface of Cu-tube Ar plasma in a magnetic field ≤0.1 T.
This volume presents new results in the study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theiries of queueing systems and queueing networks .
The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.