Materials Literature
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While the nephrotoxicity of high-dose nano-TiO2 has been demonstrated, very little is known about the mechanism of oxidative stress to the animal kidney. In order to understand the nephrotoxicity of nano-anatase TiO2 particles, various biochemical and chemical parameters were assayed in mouse kidneys. Abdominal exposu…
Many studies have investigated the influence of harmonics on insulation life. A limited number of these studies address electrical tree growth characteristics while even fewer employ harmonics maintaining a constant peak voltage. This experimental study sought to quantitatively identify any distinguishing features of…
Barium titanate (BT) and montmorillonite (MMT) nanoparticles were covalently-bonded by organically modifying the particle surfaces and chemically reacting them in solution. These integrated two-material hybrid inorganic nanofillers were subsequently dispersed in epoxy resin and nanocomposites were obtained at several…
The syntheses, crystal structures, and the experimental and theoretical magnetochemical characterization for three tetrametallic Ni(II) clusters, namely, [Ni(4)(L)(4)(Cl)(2)(MeOH)(2)](ClO(4))(2)·4MeOH (1), [Ni(4)(L)(4)(N(3))(2)(MeOH)(2)](ClO(4))(2)·2MeOH (2), and [Ni(4)(L1)(4)(pyz)(2)(PhCOO)(2)(MeOH)(2)](ClO(4))(2)·7M…
Recently (Baranov et al., Nano Lett., 2010, 10, 743) we demonstrated that depletion attraction between semiconductor nanorods in solution can be employed for both their self-assembly and their separation from spherical nanoparticles. Here we show that depletion attraction can be used to fabricate binary superlattices…
1-(3-Methyl-1H-pyrazol-5-yl)-3-(3-nitrophenyl)urea (1) forms hydrogels in a range of acids at pH 1–2. The morphology and rheology of these gels are dependent on the identity of the anion and represent a way of tuning the gels' physical properties. The magnitude of the elastic storage modulus of the gels follows the tr…
Herein we present a general phosphine-free synthesis of metal selenide nanocrystals. In this method, reduction of elemental Se with sodium borohydride in the presence of hydrophobic alkylamines generated hydrophobic alkylammonium selenide species in situ. The phosphine-free Se precursor was found to be highly reactive…
The purpose of this study was to develop a novel, highly water-soluble poly(L-γ-glutamyl-glutamine)-paclitaxel nanoconjugate (PGG-PTX) that would improve the therapeutic index of paclitaxel (PTX). PGG-PTX is a modification of poly(L-glutamic acid)- paclitaxel conjugate (PGA-PTX) in which an additional glutamic acid ha…
In this review, the applications of magnetic nanoparticles in biomedicine are summarized and introduced in three parts. (1) A short description of magnetic nanoparticles is explained. (2) Applications of magnetic nanoparticles in biomedicine are summarized. In biology, new progress of the magnetic separation technique…
The ZnO thin films were prepared from zinc acetate dihydrate as main precursor by using sol-gel method and deposited by drainage and dip coating technique. Four different routes and coating techniques were used for the preparation of samples. The morphology, optical, and structural properties of the sol-gel made ZnO t…
Recent progress in lead-free piezoelectric ceramics and thin films with special emphasis on alkaline niobatebased and bismuth sodium titanate-based systems is reviewed concisely. Modifications of potassium sodium niobate (KNN) ceramics are presented and subsequent improvements in the electrical properties are summariz…
Resisting impact and avoiding injury are central to survival in situations ranging from the abiotic forces of crashing waves to biotic collisions with aggressive conspecifics. Although impacts and collisions in biology are ubiquitous, most studies focus on the material properties of biological structures under static…
Today, various anthropogenic sources account for an increasing atmospheric nanoparticle (NP) concentration and thus increase of human exposure to NPs. The situation may become problematic since commercial applications of nanotechnology expand more rapidly than the scientific knowledge on NP exposure. This review focus…
This paper performs molecular dynamics simulations to investigate the role of the monovalent cations K, Na and the divalent cation Ca on the stability and swelling of montmorillonite. The recently developed CLAYFF force field is used to predict the basal spacing as a function of the water content in the interlayer. Th…
INTRODUCTION: Phosphatidylethanolamine (PE)-conjugated nanoliposomes were developed, characterized, and investigated for their accumulation in liver, kidneys, and lungs in rats. METHODS: Drug-excipient interaction was studied using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC)…
The development of a vascular network in tissue-engineered constructs is a fundamental bottleneck of bioregenerative medicine, particularly when the size of the implant exceeds a certain limit given by diffusion lengths and/or if the host tissue shows a very active metabolism. One of the approaches to achieve the vasc…
We investigated by dielectric relaxation spectroscopy the distribution of glass transition temperatures and dielectric relaxation strength inside ultrathin polymer films capped between metallic layers. Measurements of the local dielectric properties were achieved by selectively placing layers of dye-labeled polystyren…
The new bio-SAXS beamline (ID14-3 at the ESRF, Grenoble, France) is dedicated exclusively to small-angle scattering experiments of biological macromolecules in solution and has been in user operation since November 2008. Originally a protein crystallography beamline, ID14-3 was refurbished, still as a part of the ESRF…
The effect of support morphology and impregnation medium on the activity of Cu/CeO 2 catalysts in the water gas shift reaction was investigated. Steady-state reaction experiments showed that the catalysts supported over CeO 2 nanoparticles achieved significantly higher CO conversions than catalysts supported over nano…
Multiple-walled carbon nanotube (CNT)-and carbon black (CB)-polymer composites have been fabricated by mechanical mixing with different loadings, the polymeric matrix being identical between the two series of samples. The main focus of this work is to report measurements of physical properties of these mixtures in amb…