Materials Literature
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The finite element method has been employed to study the effects of different boundary conditions on the axial buckling of multiwall carbon nanotubes (MWCNTs). Unlike previous works, both homogeneous and heterogeneous end constraints are considered for the constituent tubes of various MWCNTs comprising shell-type (i.e…
Abstract This overview covers the most relevant results obtained by our group in the last few years concerning the synthesis and catalytic applications of metal complexes anchored to the surface of carbosilane dendrimers functionalized with iminopyridine ligands. Nickel dibromide complexes activated with methylalumino…
Behavior of lithium peroxide samples at heating in air was studied by the methods of thermogravimetric analysis (TGA) and differential thermal analysis (DTA). In the temperature range from 32 to 82°C all the studied samples we found to react with water vapor forming lithium peroxide monohydrate as confirmed by the met…
For modern automotive applications, after-treatment systems have become essential to respect the new emission standards. All the automotive world's attention is focused on catalysis systems because they seem to be one of the best ways to reach the future standards. As a result, after-treatment issues are more and more…
This paper is focused on the preparation and characterization of glutathione (GSH) coated near infrared quantum dots (QDs). The preparation method is based on surface modification of hydrophobic core/shell CdSeTe/CdS by glutathione, which makes the QDs water-soluble. Moreover, tripeptide GSH provides a biocompatible b…
A nickel-containing shungite powder has been synthesized by means of chemical reduction from aqueous solutions. The chemical composition and radio-absorbing properties of this powder have been studied.
An oil droplet is placed on an oil bath at least ten times more viscous. When the oil bath is vertically shaken according to a sinusoidal motion, the droplet may bounce indefinitely on the bath. This sustained bouncing mode is stable when the forcing acceleration is higher than a threshold value. On the other hand, th…
Abstract Oriented architectures are formed on nanocrystals with incorporation of organic polymers through a biomimetic route. The composites of potassium sulfate and potassium hydrogen phthalate/poly(acrylic acid) exhibit a mosaic structure consisting of organic polymers and ca. 20 nm nanocrystals. These nanocrystalli…
Abstract The removal of methyl orange (MO) from an aqueous solution was performed using layered double hydroxides (LDHs) in a move to develop cleaning processes of effluents contaminated with dye molecules. The intercalation of the guest anionic MO species into host M II /Al III LDHs differing by the nature of the div…
Common nomenclatural problems in diatom research are presented based on our insights. Described here is what is new in the most recent International Code on Botanical Nomenclature—the Vienna Code—since Ross' papers on Nomenclature for Diatomists: the terms epitype and original material, second step lectotypification,…
Liquefied natural gas (LNG) has been widely used as a substitute fuel for commercial purposes. It is transported mainly by LNG ships which have primary and secondary leakage barriers. The former is composed of welded thin stainless steel or invar plates, while the latter is composed of adhesively bonded glass composit…
OBJECTIVE: To determine myocardial infarct (MI) size during cardiovascular magnetic resonance at 1.5 Tesla using 0.1 mmol/kg body weight of gadobenate dimeglumine (Gd-BOPTA) and 0.2 mmol/kg body weight of gadopentetate dimeglumine (Gd-DTPA). METHODS: Twenty participants (16 men, 4 women), aged 58 +/- 12 years, with a…
BACKGROUND: Novel potential MR imaging contrast agents Gd-tetra-carboranylmethoxyphenyl-porphyrin (Gd-TCP), Gd-hematoporphyrin (Gd-H), Gd-DTPA-9.2.27 against melanoma, Gd-DTPA-WM53 against leukemia and Gd-DTPA-C595 against breast cancer cells were synthesized and applied to mice with different human cancer cells (mela…
A simulation study of a tunable-gap bilayer graphene FET with independent gates is performed with a numerical solver based on the self-consistent solution of the Poisson and Schrodinger equations within the NEGF formalism. The applied vertical field manages to induce an energy gap, but its value is not large enough to…
The origin of the size-dependent photoluminescence (PL) of CuInS2-ZnS alloyed quantum dots and the effect of a ZnS thin layer coating on PL properties were studied. The PL emission band shifted to the shorter wavelength region with a decrease in the crystal size. A time-resolved measurement indicated that the PL lifet…
In this paper, multilayer graphene nanoribbon (GNR) is proposed as an emerging interconnect solution, which can be integrated with GNR devices to establish a monolithic GNR circuit. Both interconnect resistance and gate capacitance in this circuit are significantly reduced, leading to an RC delay improvement up to 60%…
Abstract This work seeks bringing a technological and social contribution by searching blends and composites of poly(3‐hydroxybutyrate) (PHB) and polyethylene widely used in packaging films, and colloidal silica. The mixtures were prepared by extrusion using a single‐screw extruder and were analyzed regarding their th…
A new concept of microelectromechanical system based thermoelectric power generator (TPG) with unique heat dissipation path is investigated in this study. By using solder based wafer bonding technology, the authors can bond three pieces of wafers to form vacuum packaged TPG. According to the finite element method and…
The compaction and sintering conditions required for avoidance of swelling and development of very coarse pores during liquid phase sintering of mixed elemental titanium powder metallurgy alloys are described with reference to the titanium–nickel binary system. Swelling is minimised by using low compaction pressure or…
In this work, the dependence of microstructure of in situ titanium aluminide and silicide composites on chemical composition and conditions of reactive sintering was studied. It was found that the rate of reactive sintering process increases with growing silicon content. In addition, heating rate strongly affects the…