Materials Literature
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The inhibition of steel corrosion in hydrochloric acid and sodium chloride solutions by Nicotiana leaves extract was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy measurements. Polarization curves showed that the extract behaves as a mixed type inhibitor in acidic medium, whil…
In this work, we have investigated the role of an organometallic catalyst, tin(II) 2-ethylhexanoate, for the first time for developing compatibilized PC/PMMA blends by a reactive extrusion process. This catalyst is found to be very efficient, as even 0.5% (w/w) of the catalyst is sufficient to develop blends with a si…
Photo-crosslinkable acrylic copolymer pressure-sensitive adhesives (PSAs) have many applications in the process of electronic industry. As the silicon wafers become thinner, PSAs need to show proper adhesion performance and better debonding characteristics. The acrylic copolymers were prepared with 2-ethylhexyl acryla…
2D double-quantum (1)H-(1)H NMR unambiguously shows that the "isolated" ≡Si-OH surface silanols of dehydroxylated SBA-15 are converted upon treatment with ammonia into single silylamine surface site ≡Si-NH(2). The "gem" di-silanols (=Si(OH)(2)) remain intact. Treatment using HMDS produces (=Si(OSiMe(3))(2)) but leaves…
UNLABELLED: The aim of the work was the synthesis of gold nanoparticles (GNP) of different sizes and the estimation of their biological activity in vitro and in vivo. MATERIALS AND METHODS: Water dispersions of gold nanoparticles of different sizes have been synthesized by Davis method and characterized by laser-corre…
The growth conditions of large and high quality single-crystals of CaFeO2.5 by the floating-zone technique in an image furnace are discussed. Structural characterization of the as grown single crystals have been carried out by neutron and X-ray diffraction as well as by HRTEM revealed the excellent quality in terms of…
To develop potent paclitaxel (PTX) formulations for cancer chemotherapy, we formulated PTX into polymeric nanoparticles composed of polyethylene glycol (PEG) and polylactic acid (PLA) block copolymer (PN-PTX). First, the physicochemical properties of PN-PTX prepared were assessed; the mean particle size was around 80…
Thermoelectric elements made of semiconductor plates laminated onto a highly electrical and thermally conductive inter-connector with a flow channel configuration can be treated as an integrated thermoelectric device (iTED). An element constructed with bulk crystalline n- and p-type (Bismuth-Telluride) semiconducting…
NaNb(1−x)TaxO3 (0.1 ≤ x ≤ 0.9) materials have been synthesized and investigated by combining diffraction methods and high resolution electron microscopy with dielectric measurements. The stabilization of lead-free ferroelectric materials has been established from a threshold dopant composition of 40%, probing the dopi…
Here we investigated the asymmetric transmission and the anomalous refraction introduced by a metasurface of bent gold nanowires. The refraction follows the generalized Snell’s law that takes into account the resonant behavior of metallic nanostructures located at the interface between two dielectrics. Measurements pe…
A novel tetradecanuclear mixed-valent cobalt cluster, formulated as [Co(II)(10)Co(III)(4)(OH)(2)O(6)(hmp)(10)(pdm)(4)(CH(3)OH)(2)]·5H(2)O (1), was obtained using mixed ligands of 2-(hydroxymethyl)pyridine (hmpH) and 2,6-pyridinedimethanol (pdmH(2)). The cobalt ions in 1 are connected by ten chelating hmp(-) ligands, f…
Ni–Cr–Mo steels such as En24 steel are widely used in machine part members, gears and shafts. En24 steel is generally used in the hardened and tempered condition to achieve an optimum combination of hardness and ductility. In the present study, heat treatment response of En24 steel was investigated by variation of har…
Dispersions of small TiO2 nanoparticles in alcohol, stabilized by surface complexation with protonated triethanolamine ligands, are proposed as bio-encapsulation matrices. They were characterized by TEM and EXAFS spectroscopy, and DLS was used to investigate the nanoparticles stability over time in their pure form and…
Cellobiose lipids (CLs) are bolaform glycolipid biosurfactants, which are produced from natural resources by a yeast strain and show fungicidal activity. In this study, the gelation properties of CL in solvents were investigated by several techniques including rheology and atomic force microscopy (AFM). The yeast CL w…
NiO nanoparticles were synthesized by sol-gel route. For the synthesis processes, nickel nitrate is used as precursor and ethanol is used solvent. Structural and optical characterization of NiO nanoparticles were investigated by using XRD and UV-Visible spectrophotometer respectively. XRD analysis indicated the format…
An inability to control cancer cell invasion and metastasis is the leading cause of death in patients with cancer. The present study was performed to determine the anti-invasive effect of Kalopanaxsaponin A (KPS-A) on matrix metalloproteinase-9 (MMP-9)-meidated invasion in phorbol 12-myristate 13-acetate (PMA)-stimula…
We describe here the construction of artificial cellulosomes by nanoclustering recombinant cellulolytic modules on non-cellulosome-derived scaffolds. Catalytic and cellulose-binding domain modules derived from cellulosomes were assembled on streptavidin and on inorganic nanoparticles. Heteroclustering of the modules s…
We report that bovine serum albumin (BSA)-coated quantum dots can be used as a fluorescent probe for measuring the cytoplasmic viscosity of a single living cell: fluorescence correlation spectroscopy measurements for a HeLa cell incorporating BSA-quantum dots show that the viscosity of cytoplasm is 4.7 times greater t…
Four new donor–acceptor semiconducting alternating copolymers consisting of thienopyrroledione (TPD) electron-accepting sub-units and either 2,7-carbazole or dialkoxy substituted benzodithiophene electron-donating moieties were prepared either by Suzuki or Stille coupling. Analytical size exclusion chromatography (SEC…
In-plane unstrained single-c-domain/single-crystal thin films of PZT-based ternary ferroelectric perovskite, ξPb(Mn,Nb)O3-(1 - ξ)PZT, were grown on SrRuO(3)/Pt/MgO substrates using magnetron sputtering followed by quenching. The sputtered unstrained thin films exhibit unique ferroelectric properties: high coercive fie…