Materials Literature
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The analysis of diketodipyrrole and 2,5-diketopiperazines, detected as pyrolysis products from collagen, which is a main component of natural leathers, by pyrolysis gas chromatography-mass spectrometry (Py-GCMS), was examined for the development of a forensic identification method of small bits of the natural leathers…
A new strategy for implementing the concept of a "micro genetic algorithm" within a standard genetic algorithm (GA) procedure is proposed. The strategy operates by applying criteria to test for the occurrence of stagnation within the population of a standard GA calculation, and triggering the micro-GA procedure whenev…
To evaluate the capability of candidate materials such as alumina (Al2O3) and yttria stabilized zirconia (YSZ) ceramics for use as environmental barrier coatings (EBCs) on C/C composites, the oxygen and water permeability through each oxide ceramic were measured in dry and/or wet atmospheres at ultra-high temperatures…
Vertically oriented carbon nanotube (CNT) arrays can increase real contact in thermal interfaces and efficiently transfer heat between the mating solids. In this study, a paraffin wax that changes phase at approximately 50°C was applied to interfaces with CNT arrays directly synthesized on one side of the interface, a…
The synthesis, molecular structures, and magnetic and optical properties of [Mn(32)Se(14)(SePh)(36)(PnPr(3))(4)] and [Na(benzene-15-crown-5)(C(4)H(8)O)(2)](2)[Mn(8)Se(SePh)(16)] have been investigated which are the first examples of manganese chalcogenide cluster complexes, despite known manganese oxo compounds, which…
Using gradient corrected periodic density functional theory calculations, we have investigated the structure, energetics, bonding, and diffusion of Ge in bulk α-quartz and amorphous matrices as well as at the interface. Our calculations show that Ge atoms undergo migration in with a moderate barrier and prefer to rema…
Spectroscopic evidence of the thermally induced generation of multifunctional mesoporous materials through metamorphism within the pore walls of ethenylene-bridged PMOs is presented.
Reductive alkylation of N-MWNTs with Li/NH3 results in fracturing of the nanotubes, ripping channels that breach the central core and generating significant new pore volume.
The textures of nine covering fabrics for car seat were evaluated by male students in their twenties and male experts in their fifties using only human tactile sensation, and physical properties of those fabrics were measured. We examined the correlations between the subjective evaluations of the texture image and the…
A terpolyester consisting of 3-hydroxybutyrate (3HB), 4-hydroxybutyrate (4HB) and 3-hydroxyhexanoate (3HHx), abbreviated as P(3HB-co-4HB-co-3HHx), was studied for possible application as an implant biomaterial. L929 mouse fibroblasts, MC3T3-E1 murine osteoblasts and a human cell line of immortalized human keratinocyte…
We performed high-pressure and high-temperature X-ray diffraction experiments on InOOH using laser heated diamond anvil cells. After heating at 1300 K, pyrite-type InOOH was formed at 14 GPa and it was stable up to at least 30 GPa. Pyrite-type InOOH partially transformed back to distorted rutile-type InOOH after recov…
These vertically aligned Ta2O5 nanorods were deposited on Si (100) substrates by thermal deposition in a vacuum of the order of 10−2 Torr at about 600°C. When excited by 514 nm Ar+ laser, they showed a strong photoluminescence at ∼622 nm, which was attributed to the oxygen vacancies. In addition, their dielectric cons…
Swift heavy ion irradiation is an effective technique to induce changes in the microstructure and electronic energy levels of materials leading to significant modification of properties. Here we report enhancement of ammonia (NH 3 ) sensitivity of SnO 2 thin films subjected to high‐energy Ni + ion irradiation. Sol‐gel…
Plant-based natural fibers have a large variation in cross-sectional area. Even in a single fiber the cross-sectional area varies along the fiber-axis. In addition, the shape of the cross-section is not circle, but rather close to an ellipse. Therefore the fiber strength often results in under- or over-estimation. It…
The molybdenum trioxide (MoO 3 ) thin films were grown onto ITO‐coated flexible Kapton substrates using plasma assisted activated reactive evaporation technique. The film depositions were carried out at constant glow power and oxygen partial pressures of 8 W and 1 × 10 −3 Torr, respectively. The influence of substrate…
Abstract Summary: Polypropylene‐nanocomposites were prepared by in‐situ polymerization with the catalysts systems rac[Et(IndH 4 ) 2 ]ZrCl 2 , Me 2 Si(Flu)(Ind)ZrCl 2 and rac[Me 2 Si(2‐Me‐4‐(1‐Naph)Ind) 2 ]ZrCl 2 . The type and size of the nanoparticles and the concentration of the propene were varied. The activity is…
Flax fibers are often used in reinforced composites which have exhibited numerous advantages such as high mechanical properties, low density and biodegradablility. On the other hand, the hydrophilic nature of flax fiber is a major problem. In this study, we prepare the soybean oil based composites reinforced with prot…
Recent opinions of the Scientific Committee on Consumer Products (SCCP) of the European Commission emphasize the missing validation of in vitro methodologies for nanomaterials and suggest that a review of the safety of insoluble nanomaterials presently used is required. Therefore the influence of Fluospheres® and sili…
A water soluble and metal free phthalocyanine oligomer sulfonate has been synthesized and its corrosion inhibitive effect has been investigated by potentiodynamic measurement, ac impedance, and surface analysis. The potentiodynamic parameters show that can effectively reduce the corrosion current density and inhibit t…
This paper discusses the deterioration mechanism of magnetic properties of cores due to punching and proposes the modeling, as the best design of motors, considering manufacturing motors, is important in order to improve the high performance of motors corresponding to energy saving. In producing motors, magnetic cores…