Microparticles protective

Identification of metal particles dispersed in pictorial or decorative layers in works of art is often difficult for microscopy techniques because of (i) their presence as highly diluted components and concentrated in microparticles that, in turn, are included in binding media and attached to priming and protective layers (ii) the coexistence of metals with priming, ground or pigmenting layers in the samples and (iii) the presence of products resulting from the alteration of metals. 

Similar to transparent titanium dioxide microparticles of zinc oxide are manufactured by using sol/gel processes or precipitation in the presence of protective colloids to limit particle growth [5.288],... 

Morel O, Jesel L, Hugel B, Douchet MP, Zupan M, Chauvin M, Freyssinet JM, Toti F. Protective effects of vitamin C on endothelium damage and platelet activation during myocardial infarction in patients with sustained generation of circulating microparticles. J Thromb Haemost 2003 1 171-177. 

Tablets manufactured with OraSolv technology should contain an effervescence couple along with microparticles of drug within a rupturable coat. The tablets manufactured are compressed at a low hardness that promotes fast disintegration. The dosage forms need to be packaged in foil-foil aluminum blisters with a dome shape that impact physical protection and impermeability to moisture. This constitutes the PakSolv Techonology. ...

Additionally, a progression of the successful coating process is illustrated by SEM (Fig. 2). These images reveal the surface morphology of SBH microparticles during the coating process. Comparison between the particles coated with one and six layers of polyelectrolytes indicates the efficiency of the polymer deposition. Cracks in the particles are completely covered with the polyelectrolytes. As a result, the better protection of metal hydride could be achieved due to blocking of the access to the SBH surface by the deposited polyelectrolyte layers. 

We have developed the new protective coating for hydrogen storage materials prepared by the LBL technique. SBH microparticles were successftilly coated in dichloromethane with PEI and PABA which are organically soluble. The stability of these composites was increased compared to the pure material by 12 times at outdoor conditions. The demonstrated approach for hydride protection can find applications in hydrogen storage systems and could be used in hydrogen fuel cells. 

In addition to protection against corrosion, the microparticles can also be highly catalytic for the oxidation of organics. The reaction time needed for complete oxidation can be reduced several fold. The significant catalytic activity is due to the newly generated irregular surface on the sodium carbonate microparticles. The organic molecules attach to the surface and become more susceptible to oxidation. 

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