Materials Literature
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The structural, magnetic and magnetotransport properties of $La_{0.67}Ca_{0.33}MnO_3$ : $Ag_x$ (x = 0, 0.1, 0.2, 0.3 and 0.4) composites were investigated systematically. X-ray and EDX analysis indicated that Ag is not substituted into the main $La_{0.67}Ca_{0.33}MnO_3$ phase and remains an additive to the second phas…
Abstract The isothermal and nonisothermal crystallization behavior of high density polyethylene (HDPE) containing various zero, one, and two dimensional (0‐D, 1‐D, and 2‐D) carbon nanofillers were investigated by means of differential scanning calorimetry. For a given temperature, the isothermal crystallization incuba…
The features of co-luminescence (sensitized luminescence) of lanthanide ions and dye molecules inserted in nanoparticles of complexes formed by trivalent metals with β-diketones are discussed. The mechanisms of energy transfer in these nanoparticles that lead to sensitization of Ln3+ ion luminescence and dye molecule…
Polyvinyl alcohol/alginate hydrogel beads containing Mg-Al layered double hydroxide (LDH-PVA/alginate beads) were synthesized for phosphate removal. Results showed that blending PVA with the LDH-alginate beads significantly improved their stability in a phosphate solution. The kinetic reaction in LDH-PVA/alginate bead…
With proper source spacing, low loss left-handed metamaterial (LHM) lens should be useful for hyperthermia treatment of large area tumors. With a flat LHM lens applicator, conformal hyperthermia can be performed by joint heating of multiple microwave sources (antennas). In the hyperthermia, we restrict distance of two…
Abstract The melt fracture behavior of several commercial polylactides (PLAs) and poly(ε‐caprolactone) (PCL) is investigated. PLAs and PCL with molecular weights greater than a certain value were found to exhibit melt fracture phenomena in capillary extrusion, which manifests itself as distortions on their surface onc…
Abstract Organic/inorganic epoxy nanocomposites containing diglycidyl ether of bisphenol A (DGEBA), 4‐methylhexahydrophthalic anhydride (MHHPA) and poly(aminopropyl/phenyl) silsesquioxanes (PAPPS) were prepared and characterized. PAPPS were synthesized via fluoride‐catalyzed cage formation from random‐structured poly(…
Research of degradation medium occurring in agrocomplex at the current interaction with bonded joints strength and lifetime is desired owing to the possibilities of bonding applications in this dynamically developing field. The bonding technology is used in construction of machines, lines and devices of agriculture, f…
First-principles configuration–interaction (CI) calculations of the multiplet structures and the ground-state (GS) absorption spectra of isoelectronic 3d 3 ions such as V 2+ , Cr 3+ , and Mn 4+ in α-Al 2 O 3 have been performed. The results of the molecular orbital (MO) calculations without lattice-relaxation effect i…
The synthesis of high quality graphene in large quantities from graphene oxide (GO) and its dispersion in a chemical environment is essential for the real-life applications. Although GO can be converted to reduced graphene oxide (RGO) by using reducing agents, in the absence of suitable stabilizing agents, RGO undergo…
We investigate dispersion properties ofn-layers unit cell metallic-dielectric stratified structures (MDSSs) for the first time to our knowledge. An efficient and flexible numerical method is applied to study optical characteristics of the MDSSs. As an example, we systematically investigate the influences of geometric…
Optical properties of bismuth-doped silica fibres in the temperature range 300 — 1500 K, Dvoretskii, D A, Bufetov, Igor' A, Vel'miskin, V V, Zlenko, Alexander S, Khopin, V F, Semjonov, S L, Guryanov, Aleksei N, Denisov, L K, Dianov, Evgenii M
In the present work, the decomposition behaviour of NaZn(BH4)3 nanoconfined in mesoporous SBA-15 has been investigated in detail and compared to bulk NaZn(BH4)3 that was ball milled with SBA-15, but not nanoconfined. The successful incorporation of nanoconfined NaZn(BH4)3 into mesopores of SBA-15 was confirmed by scan…
Tissue-engineered bone provides a promising method for the rehabilitation of acquired bone defects and congenital deformities. However, generating a vascular supply to the engineered graft remains a major challenge. We report a novel strategy to engineer vascularized bone grafts with osteogenic and angiogenic lineage…
Cu2O thin films have been deposited using reactive dc magnetron sputtering technique using an Edward Auto 306 Magnetron Sputtering System. Transmittance and reflectance data in the range 300 nm-2500 nm were obtained using UV-VIS NIR Spectrophotometer Solid State 3700 DUV for all the thin films samples that were prepar…
Nanoparticle (NP) uptake across the gut is poorly understood. In vitro gut sac preparations and isolated perfused intestines were used to investigate the absorption mechanism(s). Exposure of whole gut sacs to 1 mg/l TiO₂ NPs for 4 h caused total Ti metal concentrations to increase in the intestine, with 80% or more of…
U LTRAHIGH temperature ceramic (UHTC) materials containing hafnium diboride (HfB2) and zirconium diboride (ZrB2) with a silica former, most commonly silicon carbide (SiC), have been studied extensively over the last decade as materials for leading-edge and control surface components on hypersonic vehicles [1–3]. Such…
Ultraviolet (UV) aging is one of the most important problems that electrical insulations are faced with it. Generally, total UV radiation emitted from the sun is divided into three parts. Among all types of ultraviolet radiation, UVChas the highest energy because its wavelength is less than 290 nm. Therefore, UVCis de…
Abstract Polychloroprene rubber (CR) is generally cured in a manner different from that of other diene rubbers. Compounding formulations based on metal oxides have been used satisfactorily for the crosslinking of CR, especially magnesium oxide (MgO) and zinc oxide (ZnO) at loadings of 4 and 5 phr, respectively. In thi…
As an alternative to synthetic pesticides, chitosan has received much attention as a biopolymer active against some agricultural pests. The, insecticidal activity of chitosans of four molecular weights (2.27 × 105,3.60 × 105,5.97 × 105,and9.47 × 105 g/mol) was investigated against two species of arthropod pests: olean…