Materials Literature
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This study investigated the influence of rhenium on the mechanical behavior and fracture mechanism of a fine-grain Mar-M247 superalloy at elevated temperatures. Tensile test results showed that the addition of 3 mass% Re significantly improved the ultimate tensile strength and yield strength from room temperature to 7…
Thermo-sensitive poly(N-isopropylacrylamide) hydrogel was used as a matrix polymer to immobilize polydiacetylenes (PDAs) vesicles. Blue-red chromic transition of PDAs was observed at lower temperature, compared to PDAs vesicle dispersion. The tuned chromic process was due to the interaction between matrix polymer and…
The problem of a homogeneous linear elastic body containing multiple collinear cracks under anti-plane dynamic load is considered in this work. The cracks are simulated by distributions of dislocations and an integral equation relating tractions on the crack planes and the dislocation densities is derived. The integra…
This study investigated whether elevated host immune capacity can inhibit T. gondii infection. For this purpose, we used silk protein extracted from Bombyx mori cocoons as a natural supplement to augment immune capacity. After silk protein administration to BALB/c mice for 6 weeks, ratios of T lymphocytes (CD4(+) and…
We have examined antireflection (AR) coatings for high reflectivity metals such as Al on the basis of the admittance diagram. The proposed AR coatings consist of bilayers of absorptive and dielectric materials. A wide variety of materials can be used for AR coatings by tuning the thicknesses of both the absorptive and…
We study the liquid crystalline phases formed by di-, tri- and tetrafluoroterphenyls using molecular dynamics simulations at the all atom level. We demonstrate the spontaneous assembly of the nematic, smectic A and smectic C phases upon cooling from the isotropic phase for difluoroterphenyls. We find that the trifluor…
A mathematical model for a planar solid oxide fuel cell (SOFC) was constructed. The chemical species, the temperature distribution and the cell performance were calculated using unit model with double channels of co-flow pattern. The governing equations for mass continuity, momentum conservation, energy conservation a…
A polyoxotetradecamolybdate cluster [Mo(14)O(38)(OAc)(6)](2-), which has a lacunary core of the Wells-Dawson structure, is isolated by the reduction of [Mo(6)O(19)](2-). The Mo(14) core is comprised of a mixed valence of [Mo(V)(4)Mo(VI)(10)], exhibiting multi-step reversible redox processes that experience both oxidat…
Cluster-assembled nanostructured films of refractory metal oxides were produced by supersonic cluster beam deposition (SCBD) using a pulsed microplasma cluster source (PMCS). The growth of nanostructured films takes place at room temperature on substrates exposed to nanoparticles beam. Soft landing and limited diffusi…
Ionic-complementary peptides (ICPs) are well known for their strong propensity to form amyloid-like β-sheet fibrils. Here, we present the first example that α-helical based ICPs can self-assemble into a highly ordered fibrillar structure. Intriguingly, the individual α-helices in such fibrils are arranged shoulder-to-…
The objective of this study is to develop the process conditions of a w/o emulsification method for the preparation of the smallest agar nanoparticles possible in a low nanometer range with the highest yield, prior to adding an aqueous solution containing an unstable drug such as a protein drug for its encapsulation.…
Inversion of nanocrystalline ZnO(Ga) sensor signal during ammonia detection is reported for the first time. In the middle temperature region (250-300 °C) the presence of ammonia in air results in increase of resistance. Comparative EPR study and dc conductance measurements allows to attribute this effect to changes in…
Plant material screening was performed to study anti-Helicobacter pylori activity in vitro using an agar diffusion method on Columbia blood agar. 33 substances, juices and plant extracts and 35 of their combinations were tested. Quince (Cydonia oblonga) juice demonstrated the strongest anti-H. pylori activity followed…
A novel cadmium imidazolate framework of [Cd(nim)2] (CdIF-13, nim = 2-nitroimidazolate) has been prepared and structurally characterized that demonstrates a self-penetrating 4-connected net identified with the ice XII structure of itv topology and is presented as the first metal–organic framework (MOF) with itv topolo…
The structure of BaThF(6) has been investigated as a function of temperature and pressure with single-crystal X-ray diffraction using synchrotron radiation. The compound crystallizes in the tysonite structure, space group P6(3)/mmc (a = 4.296(1) Å and c = 7.571(1) Å at ambient conditions). It is stable at least down t…
Twelve molecules of β-carbonyl-para-octyl-calix[4]arene assemble in an aggregate containing two types of cavities filled by water molecules and they pack in a cubic structure. Both the aggregates and the packing resemble that observed for inverse micelles.
We customized TASK3D in order to add a new function, TR-snap, for evaluating transport coefficients on the basis of a power balance analysis. To check the validity of the TR-snap's results, the thermal transport coefficient evaluated by TR-snap was compared with results of PROCTR, which is used as the transport analys…
As flax fibers exhibit good mechanical properties and low cost, they are considered as efficient renewable reinforcement of polymers. The fiber properties are now relatively well-known, but information about the mechanical behavior of the interfaces between fibers of a bundle is still missing, whereas it is of crucial…
The electronic structure of PuCoGa 5 , Pu metal, and PuO 2 is explored using photoelectron spectroscopy. Ground state electronic properties are inferred from temperature dependent photoemission near the Fermi energy for Pu metal. Angle-resolved photoemission details the energy vs. crystal momentum landscape near the F…
Three novel rigid-rod conjugated organic-POM hybrids (1, 2 and 3) containing pendant amino terminus, with different rod lengths and different substituents on the rod, have been respectively synthesized via one-pot reaction of hexamolybdate and the corresponding aromatic diamine (for 1 and 2) and reaction of octamolybd…