Materials Literature
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The present paper reports changes to the existing nomenclature for minerals belonging to the pearceite-polybasite group. Thirty-one samples of minerals in this group from different localities, with variable chemical composition, and showing the 111, 221, and 222 unit-cell types, were studied by means of X-ray single-c…
Small-caliber (1.2 mm inner diameter) vein grafts, made from a mixture of heparin and polyurethane with superior compliance, excellent antithrombogenicity and biocompatibility, have been developed. Eighteen rabbits were used; 12 for the heparin containing grafts and the other six were pure polyurethane grafts as contr…
A novel methodology for the preferential end functionalization of Au nanorods with nanoparticles is reported by exploiting the electrostatic attractive interactions. The enhanced potential at the edges of Au nanorods preferentially attracts the positively charged Au nanoparticles, leading to their selective binding. S…
A material placed in direct contact with a high explosive experiences a Taylor wave (triangular-shaped) shock loading profile. While a large number of studies have probed the structure, properties, and tensile response of materials subjected to square-topped shock loading pulses histories, few studies have systematica…
Alloy 22 (UNS N06022) is a Ni-Cr-Mo-W alloy highly resistant to localized corrosion. Alloy 22 may be susceptible to crevice corrosion in pure chloride (Cl–) solutions under aggressive environmental conditions. The effect of the fluoride (F–) over the crevice corrosion induced by chloride ions is still not well establi…
Two 3D materials in which the same copper(II)−azido layers are linked by organic pillars of different lengths have been characterized, and the exclusive influences of the pillar length on interlayer magnetic interactions and on bulk magnetic behaviors have been investigated.
Abstract In this study, we have demonstrated the possibility of using macroporous silicon electrodes in electrochemical capacitors. Macroporous silicon was used to increase the surface exchange between pore surface and electrolyte. The inherent resistivity of the porous silicon can be reduced through the use of subseq…
A mesoporous carbon structure was template-synthesized from small nanoparticles of silica with internal M41S type mesopores. The silica template was synthesized according to Suzuki et al. using an ionic surfactant to create the internal mesopores 1.8−3.5 nm diameter and a nonionic surfactant to limit the overall size…
The synthesis and characterization of amorphous N-incorporated carbon materials, with ordered mesoporous structure, using mesoporous aluminosilicate oxynitride (OMASON) as a solid template for the first time is reported. The use of furfuryl alcohol (FA) as carbon precursor generates the N-incorporated mesoporous carbo…
BACKGROUND: Previous studies of bone resorption around failed joint replacements have focused on a limited number of cytokines, primarily tumor necrosis factor-alpha (TNF-alpha), interleukin (IL)-1, and IL-6, with use of enzyme-linked immunosorbent assay and immunohistochemistry techniques. In this study, we utilized…
In the context of constructing nonclassical mechanically interlocked dendrimers by employing a convergent templation procedure, the “clipping” thermodynamic approach has been explored to introduce sterically bulky Fréchet-type dendrons with successive generations [G0] to [G3] onto a trivalent ammonium ion core using a…
By studying styrene, a simple hydrocarbon with a weak dipole moment, we have investigated ferroelectric ordering and ferroelectric transitions at the single-molecule level. Low-temperature scanning tunneling microscopy imaging of individual styrene molecules reveals their internal structure and hence the orientation o…
Scanning electron microscopy, including energy dispersive scan analyses and amplitude sweep tests with controlled shear deformation, were conducted on four kaolinitic, Fe‐oxide‐rich Brazilian Hapludox soils and one montmorillonitic Calciudert soil to elucidate results obtained from a parallel‐plate rheometer. In the B…
Abstract Full exfoliation of clay/high density polyethylene (HDPE) nanocomposites was successfully achieved with the aid of maleated HDPE (PE‐ g ‐MAn), by melt blending in a twin‐screw extruder employing a long residence time configuration. The morphology of the composites was determined using wide‐angle X‐ray diffrac…
Allotropes of carbon based materials, such as graphite, fullerenes and nanotubes, and diamond are currently a focus of great interest. New diamond (n-diamond) has been proposed as a new carbon allotrope; its electron diffraction pattern matches that of cubic (F d3m) diamond apart from some additional reflections that…
Radiation nephropathy has emerged as a significant complication of bone marrow transplantation and radionuclide radiotherapy, and is a potential sequela of radiological terrorism and radiation accidents. In the early 1990's, it was demonstrated that experimental radiation nephropathy could be treated with a thiol-cont…
peer reviewed
In ultrathin polymer films, the coupling between the segmental mobility, precursor of the molecular diffusion, and the crystallization rate is broken down because of interfacial interactions. In particular, in the presence of a reduced mobility layer at the interface with the substrate, the crystallization kinetics sl…
The effect of hydroxylation on the surface structure of amorphous alumina is investigated using classical molecular dynamics simulations. It is found that the hydroxylated amorphous alumina surface is terminated by hydroxyl groups singly and doubly coordinated to aluminum. Root-mean-square roughness calculations and d…
We report on the observation of room temperature ferromagnetism in Cr-doped In2O3 bulk samples and spin-coated thin films. The samples showed a clear ferromagnetism above 300K with magnetic moments of 0.008 and 0.22μB∕Cr at 300K for the bulk and thin film, respectively, only after high vacuum (HV) annealing at 600°C.…