Materials Literature
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We performed first-principles theoretical calculations to examine the interactions between oxygen vacancy (V O ) and rare-earth (RE) elements in barium titanate (BaTiO 3 ), in order to clarify the mechanism of V O trapping by RE dopants, which affects the insulating reliability of BaTiO 3 -based multilayer ceramic cap…
The magnetocaloric effect in antiferromagnetic superconductors Dy 1- x Ho x Ni 2 B 2 C ( x = 0, 0.3, 0.5, 0.7, and 1) has been studied. The magnetic transition temperature T M as well as the temperature of the maximum magnetic entropy change (-Δ S M max ) gradually shift to low temperature with increasing x , while th…
Background: Oral delivery of insulin is challenging and must overcome the barriers of gastric and enzymatic degradation as well as low permeation across the intestinal epithelium.The present study aimed to develop a liposomal delivery system containing glycocholate as an enzyme inhibitor and permeation enhancer for or…
BACKGROUND: One of the main challenges in biomedicine is improvement of detection sensitivity to achieve tumor marker recognition at a very low concentration when the disease is not significantly advanced. A pivotal role in cancer defense is played by the p53 tumor suppressor, therefore its detection with high sensiti…
This article presents the effects of fiber volume fraction on the existence of a transition region in unidirectional kenaf/epoxy composites. The composites were made from hand Lay-up techniques, with three formulations of fiber volume fraction employed: 0% (neat), 15% and 45%. The results showed that tensile propertie…
AIMS: By randomly sampling a known fraction of a pellet of cultured cells, we have accurately estimated the mean number of 50 nm gold nanoparticles accumulated within a single cell. Cellular nanoparticle uptake was measured using a combination of stereological sampling techniques and transmission electron microscopy.…
The in vivo degradation processes by which scaffolds degrade and are replaced by neo-tissue are complex and may be influenced by many factors, including environmental conditions, material properties, porosity and 3D architecture. The present study is focused on the influence of design parameters, filament distance (FD…
The search of new superhard materials with Vickers hardness larger than 40 GPa or even comparable to that of diamond remains considerably experimental and theoretical challenges. In this work, we have theoretically designed a potential superhard material in the ternary B-C-O system, B 2 CO, which is isoelectronic with…
OBJECTIVES: To synthesize magnetic particles of lanthanum-strontium manganite, prepare the magnetic fluid (MF), evaluate the generation of heat by particles and determine their common toxiсity. METHODS: Nanoparticles based on the solid solutions of lanthanum-strontium manganite (La(1-x)Sr(x)MnO(3)) have been synthesiz…
Titanium oxide clusters were formed in the gas phase by the laser ablation of a Ti rod in the presence of oxygen in a He gas. Not only stoichiometric but also nonstoichiometric titanium oxide clusters, Ti(n)O(2n+x)(+) (n = 1-22 and x = -1-3), were formed. The content of oxygen atoms depends strongly on a partial press…
Abstract Cupric oxide and cuprous oxide micro‐/nanomaterials with well‐controlled sizes and morphologies have been synthesized via different crystal growth techniques. Structural and morphological characterizations of these copper oxide micro‐/nanomaterials were performed by X‐ray powder diffraction (XRD), scanning el…
Crystals of phosphopantetheine adenylyltransferase from Mycobacterium tuberculosis , thymidine phosphorylase from Escherichia coli , carboxypeptidase T from Thermoactinomyces vulgaris and its mutant forms, and crystals of complexes of these proteins with functional ligands and inhibitors were grown by the capillary co…
One million Americans suffer from chronic wounds every year with diabetics and older populations representing the majority. Mechanisms that may be responsible for the reduced healing response in these patients include reduction in growth factors or vascularization and an increase in free radical levels. The focus of t…
Piezoresponse Force Microscopy (PFM) is used to characterize the nanoscale electromechanical properties of centrosymmetric CaCu3Ti4O12 ceramics with giant dielectric constant. Clear PFM contrast both in vertical (out-of-plane) and lateral (in-plane) modes is observed on the ceramic surface with varying magnitude and p…
Cancer nanotherapeutics have shown promise in resolving some of the limitations of conventional drug delivery systems such as nonspecific biodistribution and targeting, lack of water solubility, low therapeutic indices, and poor oral bioavailability. Moreover, cancer nanotechnology has the potential of improving curre…
Collagen is a fibrous protein that is responsible for structural integrity of various connective tissues such as bone, tendon, and skin. The mechanical properties of these hierarchical tissue structures are greatly influenced by presence of long and slender (~300 long and ~1.5 nm in diameter) collagen molecules that i…
We report on the interrelation of optical emission of randomly oriented ZnO nanorod system with the carrier transport properties of Ag/ZnO nanorod-based rectifying junctions. The ZnO nanorods, exhibiting a hexagonal wurtzite phase, were fabricated by a cost-effective rapid thermal annealing process and at different an…
Definitions Classes of Experiments Geometries Temperature Dependence of Viscosity Pressure Dependence of Viscosity Calculation Schemes Non-Newtonian Melt Rheology
The inhibition performance of imidazolium based aprotic ionic liquids (ILs) [C4mim][NO3], [C4mim][BF4] and [C4C1mim][BF4] on mild steel corrosion in hydrochloric acid was studied at 303-313K using weight loss and hydrogen evolution techniques. Inhibition efficiency increased and corrosion rate decreased with increase…
Polyhydroxyalkanoates (PHA) are biodegradable and biocompatible green thermoplastics, synthesized by wide variety of bacteria as an intracellular carbon and energy storage intermediate. They are used as an alternative to nonrenewable petroleum derived plastics. The current interest in these biopolyesters is stimulated…