Materials Literature
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The origin and evolution of multicellular metazoa was accompanied by the appearance of extracellular matrix. The demineralized extracellular matrix of bone is enriched in morphogenetic proteins that induce bone. Bone morphogenetic proteins (BMPs) are intimately bound to collagens. BMP-4 has high affinity for type-IV c…
Three types of covalently crosslinked assemblies consisting of multiple (1) molecular layers of human serum albumin (HSA); (2) alternating layers of HSA and unfractionated heparin; and (3) alternating layers of HSA and partly depolymerized heparin fixed with one end to HSA were prepared on various surfaces. Adsorption…
Piezoelectric ceramics are potential high-power electroacoustic sources, and have been studied for many years. However, when these devices are driven under high-level vibration, the electromechanical characteristics depart significantly from the conventional linear piezoelectric relationships due to the loss and nonli…
Porous CaZrO 3 /MgO composites with a uniform three‐dimensional (3‐D) network structure have been successfully synthesized using reactive sintering of highly pure mixtures of natural dolomite (CaMg(CO 3 ) 2 ) and synthesized zirconia powders with LiF additive. Equimolar dolomite and zirconia powders doped with 0.5 wt%…
The frequency dependent ultrasonic velocities (both longitudinal and shear) and attenuation in BaTiO3 doped (80V2O5–20PbO + xBaTiO3) oxide (VPB) glasses (for x = 0, 1, 5, 10, and 15 wt% of the base glass) have been measured using pulse echo overlap method at room temperature. From the measured velocity, density and at…
As magnesium is an essential element, magnesium implants can be expected to be safety though its corrosion resistance is low To understand its corrosion behavior in vitro circumstance, for example Hank's solution and to improve its corrosion resistance, the present study was carried out. Specimens of 10 X 20 X (2-4) m…
The creep behavior of a commercial grade of Si 3 N 4 was studied at 1350° and 1400°C. Stresses ranged from 10 to 200 MPa in tension and from 30 to 300 MPa in compression. In tension, the creep rate increased linearly with stress at low stresses and exponentially at high stresses. By contrast, the creep rate in compres…
Polymorphic behavior (i.e., the development of α and β forms) of melt-crystallized syndiotactic polystyrene, sPS, has been studied by structure analysis of FTIR (Fourier transform infrared spectroscopy), WAXD (wide-angle X-ray diffraction), and ED (electron diffraction) as well as thermal analysis of DSC (differential…
We report a molecular dynamics simulation of selenium, described by a three-body interaction. The temperatures ${T}_{g}$ and ${T}_{c}$ and the structural properties are in agreement with experiment. The mean nearest neighbor coordination number is 2.1. A small prepeak at about $1 {\AA{}}^{\ensuremath{-}1}$ can be expl…
We have shown recently that glycosylation of threonine in the peptide Ac-(Gly-Pro-Thr)(10)-NH(2) with beta-d-galactose induces the formation of a collagen triple helix, whereas the nonglycosylated peptide does not. In this report, we present evidence that a collagen triple helix can also be formed in the Ac-(Gly-Pro-T…
Pseudomonas oleovorans ATCC 29347 was grown in chemostat culture at different dilution rates with mineral media varying in their ratios of octanoate to ammonia (C(0)/N(0) ratio). At all dilution rates tested, three distinct growth regimes were observed: (i) carbon limitation with NH(4)(+) in excess at low C(0)/N(0) ra…
A yttria‐stabilized zirconia (YSZ) thin film on an La 0.8 Sr 0.2 MnO 3 porous cathode substrate was prepared, using electrophoretic deposition (EPD) to fabricate a solid oxide fuel cell (SOFC). The electrical conductivity of an La 0.8 Sr 0.2 MnO 3 substrate is satisfactorily high at room temperature; therefore, YSZ po…
As the limitations of the plane-wave basis set are creating practical problems it is important to find alternatives without these limitations. In this paper basis sets constructed from numerical atomic-type orbitals are investigated for silicon, carbon, and aluminum. Modest basis sets are found to give accuracies comp…
Dense polycrystalline eutectics of alumina and yttrium aluminum garnet (YAG) were fabricated by hot‐pressing powders of pulverized arc‐melted buttons at homologous temperatures of 0.9 T eu –0.93 T eu (where T eu is the eutectic temperature). The eutectic microstructure of the arc‐melted buttons was retained after dens…
Y 2 O 2 S:Eu red phosphor powders were coated with silica (SiO 2 ), using sol–gel and heterocoagulation techniques. Phosphor powders were dispersed in ethanol with tetraethyl orthosilicate and water. Hydrochloric acid was used to catalyze the sol–gel reaction, and an amorphous film 10–20 nm thick was observed via tran…
The synthesis of triazolephthalocyanines bearing crown ether and aza-crown ether substituents is described. Different substituents have been introduced on the nitrogen atom of the aza-crown moiety to improve the solubility and the intrinsic amphiphilic character of these macrocycles. The crowned triazolephthalocyanine…
The potential associated with the electrochemical deposition of radionuclides in metallic form from solutions of extremely small concentration is strongly influenced by the choice of the electrode material. In a macroscopic model, the interaction between the microcomponent and the electrode material is described by th…
The aim of this contribution is to answer the question if and how mechanical fabric parameters being components of a formability coefficient as well as mechanical parameters being components of fabric handle influence the fabric drape. Therefore, all these parameters were measured for ten fabrics and correlated with t…
Metallic alloys and ceramic materials are employed in aggressive and hostile environments, ranging from aerospace to energy production, from offshore to biological applications. Today, production requires materials able to survive for a long time at high temperatures, in highly aggressive atmospheres, both from the ch…
The effect of flow velocity on the corrosion rate of carbon steels and stainless steels in wet carbon dioxide (CO2) environments was investigated using a flow loop tester. The velocity-dependent corrosion rate of carbon steels and low-alloy steels without corrosion films obeyed a 0.83th power law. This almost correspo…